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  • 1985-1989
  • 1965-1969  (673)
  • 1966  (673)
  • Organic Chemistry  (614)
  • Biochemistry and Biotechnology  (56)
  • Squirrel monkey  (3)
Source
Material
Years
  • 1985-1989
  • 1965-1969  (673)
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Neurophysiological correlates of brightness discrimination in the lateral geniculate nucleus of the squirrel monkey (1966)
    Springer
    Experimental brain research 2 (1966), S. 1-17 
    Details
    ISSN: 1432-1106
    Keywords: Brightness discrimination ; Lateral geniculate ; Squirrel monkey
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Incremental brightness thresholds (DI) were psychophysically determined at several background illumination intensities for three squirrel monkeys. Gross asymmetrical electrodes were then chronically implanted in the lateral geniculate nucleus of the same animals, and activity was recorded in stimulus conditions identical to behavioral testing. Overall activity, recorded through an integrating voltmeter, showed 1. a tendency to decrease as steady background illumination increased, and 2. an abrupt transient increase at both onset and offset to DI test flashes, directly proportional to test flash intensity. Background illumination, in proportion to its intensity, depressed response to a superimposed test flash. Test flashes below intensity DI at the various levels of background illumination produced no measurable response. The quantity DI was shown to be a function of the depressive or inhibitory effect of background illumination on the capacity of the system to respond to transient stimulation. A secondary determinant of DI appeared to be the amount of variability in ongoing neural activity upon which the DI flash is imposed. The author is indebted to the supervisor of her dissertation, Dr. L. R. Pinneo, for introducing her to the recording technique and for his help towards the completion of this work.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00234357
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  • 2
    Electronic Resource
    Electronic Resource
    Histochemical mapping of succinic dehydrogenase and cytochrome oxidase in the spinal cord, medulla oblongata and cerebellum of squirrel monkey (Saimiri sciureus) (1966)
    Springer
    Experimental brain research 2 (1966), S. 216-229 
    Details
    ISSN: 1432-1106
    Keywords: Squirrel monkey ; Brain stem-Histochemical mapping ; Succinic dehydrogenase ; Cytochrome oxidase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The distribution of succinic dehydrogenase (SDA) and cytochrome oxidase (Cy. O) in serial sections of the cervical region of the spinal cord and the medulla oblongata, arranged caudo-cranially, has been described. The motor cranial nerve nuclei exhibit strong SDA and Cy. O activity in the neurons and neuropil. The nuclei gracilis, cuneatus, olivaris inferior, cochlearis and vestibularis likewise show strong enzyme activity. Nucleus intercalatus and nucleus tractus solitarius, however, show weak and moderate enzyme activity respectively. The lateral part of formatio reticularis myelencephali shows less SDA and Cy. O compared to the medial part, which shows some accumulation of these enzymes in the neuropil. The neuropil of the molecular layer of cerebellar cortex and the perikarya and dendrites of the Purkinje cells show strong SDA and Cy. O activity. The granular layer exhibits stronger SDA and Cy. O in the synaptic glomeruli. The cerebellar nuclei possess stronger enzyme activity in the neurons and dendritic branches, compared to mild activity in the neuropil.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236714
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  • 3
    Electronic Resource
    Electronic Resource
    Histochemical mapping of succinic dehydrogenase and cytochrome oxidase in the pons and mesencephalon of squirrel monkey (Saimiri sciureus) (1966)
    Springer
    Experimental brain research 2 (1966), S. 230-246 
    Details
    ISSN: 1432-1106
    Keywords: Squirrel monkey ; Midbrain ; Histochemical mapping ; Succinic dehydrogenase ; Cytochrome oxidase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The distribution of succinic dehydrogenase (SDA) and cytochrome oxidase (Cy. O) has been investigated in a series of sections through the pons and mesencephalon of the squirrel monkey brain. The localization of the two enzymes is very similar in the various regions and shows only slight differences. The epiphysis, however, shows moderately strong SDA and very mild Cy. O activity. Particularly strong SDA and Cy. O activity has been observed in the cell bodies of the various cranial nerve nuclei, nucleus colliculi inferioris, colliculi superioris, nuclei griseum pontis, reticularis tegmenti pontis, lemnisci lateralis pars dorsalis, geniculatum laterale and mediale, and pulvinaris. The enzyme content of the neurons and cell bodies is generally stronger compared to the neuropil which often occurs in smooth, loose, compact and reticulated forms. Any special relationship between the neurons and neuropil with regard to their enzyme content has, however, not been observed. The cranial nerves, and fibers of the brachium conjunctivum, corpus callosum, and fornix show very mild enzyme activity except those of the trapezoid complex which show moderate enzyme activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236715
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  • 4
    Electronic Resource
    Electronic Resource
    Sequential substrate removal by activated sludge after a change in salt concentration (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 371-378 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Previous studies indicated that when cells grown in a NaCl-free glucose medium were subjected to a high salt concentration, cellular constituents were released which were metabolized by the cells in preference to glucose. In the present study, cells grown on glucose in high salt medium were subjected to a shock loading of salt-free medium. In this case, the resulting lysate was not used in preference to glucose; the lysate was metabolized only after an acclimation period following glucose utilization. It was shown by injecting chloramphenicol into the reaction liquor during glucose metabolism that new protein synthesis was required in order to metabolize the lysate. This response represents an additional way in which a rapid change in salt concentration can adversely affect biological treatment of waste waters, and a new type of situation in which sequential removal of substrates occurs.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080305
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  • 5
    Electronic Resource
    Electronic Resource
    Studies on automatically aerated biosynthetic processes. II. Occurrence and elimination of CO2 during penicillin biosynthesis (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 337-352 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Oxygen uptake of Penicillium chrysogenum hyphae growing in automatically aerated deep cultures was the subject of local and periodical change. The change depended on the concentration of carbon dioxide which accumulated in the gas phase of system during the evolution of foam bubbles, and which was suddenly liberated when the foam was destroyed. The actual concentration of sunflower oil added as an antifoaming agent also influenced the oxygen uptake of culture.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080303
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  • 6
    Electronic Resource
    Electronic Resource
    Scale-up of the activated sludge processPresented at the 150th Meeting of The American Chemistry Society, Sept. 1965, Atlantic City, New Jersey. (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 405-431 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080308
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  • 7
    Electronic Resource
    Electronic Resource
    Oxygen transfer into mycelial pellets (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 456-460 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080311
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  • 8
    Electronic Resource
    Electronic Resource
    Effect of manganese and other heavy metals on submerged citric acid fermentation of molasses (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 465-471 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The addition of as little as 2 ppb of manganese to ferrocyanide-treated beet molasses during citric acid fermentation by Aspergillus niger NRC A-1-233 caused a 10% reduction in acid yield and undesirable change in the morphology of the organism from the normal pelletlike form to the filamentous from. Still smaller additions (0.4-2ppb) caused undesirable pellet clumping, while greater additions (2-100 ppb) gave further decreases in yield. The yield obtained at 100 ppb was less than 25% of that obtained at 1 ppb or less. None of the other metals tested (Al3+, Ca2+, Co2+, Cu2+, Fe2+, Mg2+, Ni2+, Zn2+) visibly changed pellet morphology, and only Al3+, Fe2+, and Zn2+ at relatively higher concentrations (5-25ppm) reduced acid yield. The adverse effect of manganese on growth and acid production was not affected by addition of the other metals.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080402
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  • 9
    Electronic Resource
    Electronic Resource
    Scale-up of antibiotic fermentations by control of oxygen utilizationPresented before the 140th National Meeting of the American Chemical Society, Chicago, Illinois, September 1961. (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 525-537 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Oxygen Utilization as a scale-up parameter is evaluated in two antibiotic-producing fermentations. This method of scale-up was used in tank-to-tank and in flash-to-flash scale-up studies. Antibiotic yields and cell weight trends were generally duplicated in the replicate runs, with some discrepancy noted in chlortetracycline yields at high aeration levels. The apparatus for measuring oxygen consumption rates and for automatically controlling oxygen utilization, according to a predetermined pattern, is described.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080406
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  • 10
    Electronic Resource
    Electronic Resource
    The theoretical aspects of biochemical fuel cells (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 581-593 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Biological systems can be used in three types of fuel cell: depolarization (or concentration) cell, product cell, and redox cell. The possibilities and theoretical limitations of each type of cell have been considered in terms of the metabolic activities of microorganisms and the coupling of these to electrochemical systems. The use of cell extracts and enzymes, particularly in an insoluble form, has been discussed.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080410
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  • 11
    Electronic Resource
    Electronic Resource
    The production of bacteriophage μ2 (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 195-215 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: In three series of experiments, 3-l., 20-l., and 150-l. bacterial cultures were grown in stirred, deep culture vessels to average bacterial cell densities of 71 × 108, 63 × 108, and 43 × 108 viable organisms per milliliter, respectively, and then infected with phage. The average yield of progeny phage in each case was ca. 3000 mpfu (minimum plaque-forming units) per cell. Thus, the average mass of phage obtained in the 3-l. experiments was not less than 124 mg./l., calculated from the plaque counts, assuming a particle size of 3.6 × 106 Daltons for the μ2 phage. This is about twentyfold higher than is obtainable by conventional methods in aerated, shaken culture flasks. The actual phage yields are probably much higher than the minimum values calculated from plaque counts. For example, in the case of one of our culture lysates which was purified at King's College, the efficiency of plating was shown to be only 19%. The carbon dioxide evolution rate of cultures was measured and used as a guide to the time at which phage should be added. In this way, greater control of cultural conditions was obtained than is possible in shaken flasks. For the best yield of phage per milliliter of culture, the optimum time for phage infection was such that bacterial lysis just prevented the carbon dioxide evolution rate from reaching its potential maximum. The major factor influencing the phage yield per milliliter of culture was the aeration capacity of the culture vessel used. All had maximum aeration capacities much higher than those obtainable in shaken culture flasks. Cultures grown and infected in 3-l. Vessel operated under conditions of low aeration gave poor yields of phage. The reason for this are discussed.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080203
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  • 12
    Electronic Resource
    Electronic Resource
    An automatic apparatus for inoculating, growing, and harvesting microorganisms (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 453-455 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080310
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  • 13
    Electronic Resource
    Electronic Resource
    Disintegration by freeze-pressing. III. A method for disintegration of large quantities of material (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 461-463 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080312
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  • 14
    Electronic Resource
    Electronic Resource
    Mass transfer and mixing rates in fermentation vessels (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 25-42 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The effects on mass-transfer and overall mixing rates of varying impeller geometry and operating speed have been studied for flat-bladed turbines in laboratory fermentors, in aerated aqueous solutions, and in unaerated and aerated suspensions (1.6% w/v) of paper pulp. In the absence of suspended solid, oxygen absorption rates could be correlated directly with power input. In the pulp suspension, oxygen absorption at a given power input was influenced by impeller geometry and operating speed. The data for the three-phase system can be correlated by a dimensionless equation relating oxygen-transfer rates and mixing times to the geometrical and operating parameters of the impellers.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080104
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  • 15
    Electronic Resource
    Electronic Resource
    The effect of equipment scale and degree of mixing on continuous fermentation yield at low dilution rates (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 85-96 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Previously, the degree of mixing was not felt to be an important consideration in fermentor design. In this study on the continuous propagation of Baker's yeast, it was found that at low dilution rates, i.e., 0.02hr-1, the degree of mixing achieved does effect the cell yield. At low dilution rates, appreciable quantities of sugar can be utilized for endogenous respiration in comparison to that utilized for making cell mass. Poor distribution of the sugar aggravates the balance of sugar utilized for each process. Yields at these low dilution rates can be improved to a limited extent by using a multiple feed-distribution system and better mixing.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080108
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  • 16
    Electronic Resource
    Electronic Resource
    Stochastic models for sterilization (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 167-182 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Probabilistic models for the killing of microorganisms are formulated and described. The utility of the models is illustrated by applying them to the optimization of an idealized fermentation process.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080114
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  • 17
    Electronic Resource
    Electronic Resource
    Introduction to mass culture of unusual microorganisms (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 193-193 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080202
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  • 18
    Electronic Resource
    Electronic Resource
    Characteristics of hydrogen bacteria (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 217-235 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A brief review of the development of our knowledge about hydrogen bacteria is presented, with emphasis on the characteristics and physiological differences of various Hydrogenomonas species. One species, Hydrogenomonas eutropha, is discussed in greater detail. Nutritional requirements, physical factors affecting growth, and equipment used for culturing 100-ml. shake cultures and 15-1.mass cultures of H. eutropha are described. Cell-free extracts of H. eutropha carry out the oxyhydrogen reaction as demonstrated by the alternate reduction and oxidation of endogenous flavins and cytochromes by molecular hydrogen and oxygen, respectively. Spectra of cell-free extracts of this organism show the presence of cytochromes of the c and b1 types. A cytochrome of the o type was also found, but none of the a cytochromes were detected. The sum of a series of enzymatic reactions shown to be catalyzed by these extracts can account for the oxidation of hydrogen by oxygen.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080204
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  • 19
    Electronic Resource
    Electronic Resource
    Isolation, characterization, and growth of basidiomycetes (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 275-286 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Our program on the mass cultivation of basidiomycetes was designed to determine whether these organisms, being more highly differentiated than bacteria, molds, and yeasts, would in turn carry out markedly different reactions on natural products. A discussion of our methods of isolating and characterizing a representative collection of basidiomycetes and of our difficulties in obtaining pure cultures which grew well is presented. Some information we obtained on the growth and types of products that these organisms produced in a synthetic medium is discussed. Our techniques for examining fermentation beers for transformation products from indole compounds and from progesterone are explained, and the types of products we obtained are described.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080208
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  • 20
    Electronic Resource
    Electronic Resource
    A simple semiautomatic apparatus for adaptation of microorganisms to a new medium (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 318-320 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080212
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  • 21
    Electronic Resource
    Electronic Resource
    Mass culture of the protozoa Colpoda steiniiSupported by Grant No. FR 00214 from the National Institutes of Health. (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 287-296 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Growth of the ciliate, Colpoda steinii, was studied in shake flasks, 30-l., stirred jars, and a conventional 50-gal. stainless-steel fermentor. This organism was growth with either washed or unwashed Escherichia coli cells as the sole food source. Generation times of 3-4 hr. were obtained at 30°C. With average yields of 78% (0.78 g. of protozoa/g. of bacteria). In a 100-l. fermentation, a dry weight concentration of 12.5 g./l. (1.04 × 107 protozoa/ml.) was reached by means of periodic addition of E. coli paste. The influence of bacterial concentration on the growth rate of the protozoa was also investigated. It was found that this relationship could be represented by a Michaelis-Menten equation with a maximum specific growth rate of 0.23 hr. -1 (3-hr. generation time) and a bacterial concentration for half-maximum growth rate of 6.0 mg. (dry wt.)/l.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080209
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  • 22
    Electronic Resource
    Electronic Resource
    The preservation of N. Gonorrhoeae by controlled-rate freezing followed by storage in liquid nitrogen (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 315-317 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080211
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  • 23
    Electronic Resource
    Electronic Resource
    Foam separation of Escherichia Coli with a cationic surfactant (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 323-336 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: An experimental investigation of the foam separation of E. coli from distilled water suspension using a cationic surface-active agent, ethylhexadecyldimethyl-ammonium bromide (EHDA-Br) is presented. Results are evaluated in terms of total cell count, using a membrane filtration technique. Cell concentrations in the initial suspensions are varied from 5.0 × 105 to 1.0 × 108 cells/ml. Surfactant concentrations in the initial cell suspensions are varied from 0.015 to 0.040 mg./ml., and foaming times are varied from 2 to 20 min. The residual quantity of cells decreases exponentially with foaming time to about 0.02% of the initial quantity after 20 min. The cell enrichment ratio, varying from 10 to 1,000,000, is an inverse power function of the initial surfactant concentration and an exponential function of foaming time. Foaminess decreases with increasing initial cell concentrations, and for an initial surfactant concentration of 0.030 mg./ml., the residual cell concentration is a linear function of the initial cell concentration.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080302
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  • 24
    Electronic Resource
    Electronic Resource
    Scale-up from laboratory activated sludge and trickling filter units to prototype designThis paper was presented at the 150th Annual Meeting of The American Chemical Society, Division of Microbial Chemistry and Technology, Sept. 12-17, 1965, Atlantic City, New Jersey. (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 389-404 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080307
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  • 25
    Electronic Resource
    Electronic Resource
    Yield in continuous aerobic bacterial fermentationPresented by Edward J. Martin at the 150th Meeting of the American Chemical Society, Microbial Chemistry and Technology Division, Atlantic City, New Jersey, September 13-16, 1965. (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 433-452 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Presented is a mathematical model for the continuous-flow steady-state bacterial culture which permits the experimental determination of carbon transfer rates within the system by use of radioactive tracer techniques. The transfer rates are specific for hydraulic loading rates, feed concentrations, type of organism, and substrate, and were incorporated within the existing theoretical description of the growth kinetics in order to elucidate the yield relationships. The carbon transfer rate of cells to soluble organic substrate was observed to exhibit a minimum value at or near dilution rate D = 0.5 hr.-1. A maximum effective yield coefficient, Y, was observed at the same value of D. At dilution rates greater and less than D = 0.5 hr.-1, the cell-substrate transfer rate increased, and effective yield coefficient was observed to decrease. The former showed increases of 50-200%, and the latter exhibited decreases of the order of 10%. The magnitude of these variations would seem to be significant in industrial fermentation processes which utilize continuous microbiological cultures. In light of these findings, the results of other researchers were shown to exhibit maximum effective yield at similar dilution rates or process loadings.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080309
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  • 26
    Electronic Resource
    Electronic Resource
    Continuous-culture system for ecological studies of microorganisms (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 473-488 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: An improved system is presented for measurement of interactions between a number of individual bacterial species. In the procedure, steady-state populations are fed into a common-mixed-culture vessel. Generation times of each species are determined under these conditions and contrasted with generation time in an identical situation in pure culture. Populations for generation time are determined with the aid of differential media. The mechanical system includes three types of peristaltic pumps for media feed and a unit for measurement, recording, and/or control of pH. A new type of anaerobic continuous-culture vessel which can be inoculated, sampled, and fed continuously is also described. A functional test of a three-part system including Streptococcus salivarius, Veilloncella alcalescens, and Staphylococcus aureus is presented. An unusual feature was the finding that, under certain conditions, the generation time of S. Salivarius was less than 10 min.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080403
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  • 27
    Electronic Resource
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    Apparatus for monitoring the oxygen uptake and carbon dioxide production of fermentationsPresented before the 148the National Meeting of the American Chemical Society, Chicago, Ill., September, 1964. (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 539-548 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The requirements of the continuous analysis of effluent gas streams from aerated flash and tank fermentors are described, as are instrumental devices for measuring the oxygen and carbon dioxide content of fermentor gases. The use of a specially designed sequential gas sample for monitoring four fermentations simultaneously and a system for precise control of low air flow and pressure is explained. Equations for calculating carbon dioxide production or oxygen consumption rates and respiratory quotients are given. A discussion of the operating characteristics of a device for automatic translation of aeration data between fermentors is presented.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080407
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  • 28
    Electronic Resource
    Electronic Resource
    Aeration studies. IV. Aeration conditions in 3000-liter submerged fermentations with various microorganisms (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 595-619 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080411
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  • 29
    Electronic Resource
    Electronic Resource
    Power requirement in non-newtonian fermentation broth (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 43-54 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Power requirements in the agitation of non-Newtonian fermentation broths with and without aeration were measured by a strain gage-type dynamometer. Broth from the production of gluc-amylase by Endomyces species and carboxymethyl cellulose solutions were used as non-Newtonian fluids. In gas-liquid agitation systems, the correlation between Pg and P02 ND3/Q0.56 observed by Michel and Miller was found to be applicable to non-Newtonian fluids in laminar and transition regions. This was particularly true for fluids with apparent viscosities larger than 300 cp. The impeller diameter and impeller blade width had considerable effects on power consumption in a nongassed system. It was suggested, therefore, that Pg/P0 should be correlated by a dimensionless term involving some impeller-size factors.
    Additional Material: 13 Ill.
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    URL: http://dx.doi.org/10.1002/bit.260080105
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  • 30
    Electronic Resource
    Electronic Resource
    Dissolved oxygen measurements in pilot- and production-scale novobiocin fermentations (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 97-108 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Dissolved oxygen measurements were made in pilot (20 and 250 l.) and production scale (15,000 l.) novobiocin fermentations. Bulk mixing was found to be incomplete in pilot tanks with turbine impellers of D/T = 0.40 (where D is impeller diameter, and T is tank diameter) but appeared homogeneous with impellers of D/T = 0.69. In the former case, the respiration rate was presumably limited by insufficient oxygen supply in areas of poor bulk mixing, whereas, in the latter case, the major resistance was between the bulk of the liquid and the cell (intraclump resistance). Higher agitator speeds decreased the gas-liquid resistance proportionally more than they reduced the liquid-cell resistance. In production fermentors, dissolved oxygen measurements indicated that bulk mixing was complete with each of the three impeller sizes tested (D/T = 0.28, 0.33, and 0.43), but that the respiration rate was again limited, mainly by a resistance between the bulk of the liquid and the cell.
    Additional Material: 9 Ill.
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    URL: http://dx.doi.org/10.1002/bit.260080109
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  • 31
    Electronic Resource
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    Oxygen-absorption rate-controlled feeding of substrate into aerobic microbial culturesWork done at the Massachusetts Institute of Technology, Department of Nutrition and Food Science. (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 117-134 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A system of automatic control of substrate inflow into an aerated culture of microorganisms which depend on oxygen-absorption rate (OAR) has been devised and tested. As the control variable, dissolved oxygen concentration (DOC), which shows the equilibrium between OAR and oxygen-uptake rate in the microbial culture, was chosen. If the equilibrium is disturbed by changes in OAR, then the oxygen-uptake rate is changed by substrate limitation. The DOC is measured by means of a Clark-type polarographic electrode, and the signal is used to actuate the substrate inflow valve or pump. The oxygen-uptake rate changes of microorganisms, after the addition or exhaustion of substrate in the medium, are so rapid that they can be used for this type of control.Fundamental equations were derived and graphical solutions for the control system parameters were suggested for the steady-state relations between DOC, oxygen-uptake rate, specific growth rate, substrate concentration, KLa, and concentration of microorganisms. The system is stable in the entire range of the uptake rates up to nearly the maximum attainable in unlimited substrate conditions, and can be operated in batch feed or continuous flow modifications. It was experimentally tested with the yeast Saccharomyces cerevisiae. The complete utilization of aeration-system capacity of the fermentor was achieved with high yeast yield and no alcohol formation. The quality of the product was excellent.
    Additional Material: 7 Ill.
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    URL: http://dx.doi.org/10.1002/bit.260080111
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  • 32
    Electronic Resource
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    Microflotation: New low gas-flow rate foam separation technique for bacteria and algae (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 135-151 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Foam separation of microorganisms has been investigated with varying success by many workers, usually at high rates of gas flow. Microflotation was developed to overcome some of the disadvantages inherent in these high gas-flow-rate processes and is introduced in this paper as a new technique for the foam separation of microorganisms at low gas-flow rates. With microflotation, a stable surface phase is produced by adding an insoluble collector such as a long-chain fatty acid or amine. The formation of an insoluble surface phase eliminates the need for high foaming. Low rates of gas flow are used resulting in a more efficient separation and a less voluminous and drier surface phase upon which to collect the microorganisms. The efficiency of this technique is also improved by using flotation aids such as frothers and flocculents. Frothers are used to improve the collector properties of the surfactant and to refine further the small bubbles produced by a very fine sparger. Small concentrations of flocculents, such as alum, are used to partially agglomerate the organisms and provide sites for adsorption of collector. The work described in this paper is preliminary in nature, designed to illustrate that a low flow-rate process may be used to separate microorganisms and to stimulate further research. The applications discussed are removal of the bacterium, Escherichia coli, and alum, and two species of algae, Chlamydomonas reinhardtii and Chlorella ellipsoidea, using stearylamine without alum. The frother used was ethanol.
    Additional Material: 8 Ill.
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    URL: http://dx.doi.org/10.1002/bit.260080112
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  • 33
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    Automatic multichannel recording of oxidation-reduction potentials in biological media (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 189-191 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080116
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  • 34
    Electronic Resource
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    Aeration is submerged fermentation (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 297-313 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Observations on quantitative relationships between oxygen diffusion rate and product formation were made with penicillin, bacitracin, and gluconic acid. For penicillin and gluconic acid formation, no toxic oxygen concentration could be achieved in the broth, whereas concentration above approximately 7 mg. O2/l. suppressed the bacitracin yield to an ever increasing extent. The intensity of mixing was measured by means of distributing a dye. With penicillin formation as an example, it was shown that the antibiotic yield is not only dependent on maintenance of a certain oxygen diffusion rate, but also on ensuring a necessary minimal mixing.
    Additional Material: 4 Ill.
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    URL: http://dx.doi.org/10.1002/bit.260080210
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  • 35
    Electronic Resource
    Electronic Resource
    Masthead (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966) 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080301
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  • 36
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    Development of a cross-flow fermentation process with special reference to chlortetracycline production (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 353-369 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080304
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  • 37
    Electronic Resource
    Electronic Resource
    Biotechnology and bioengineering news (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 464-464 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080313
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  • 38
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    Kinetics of polysaccharide B-1459 fermentationPresented at the 150th National Meeting of the American Chemical Society, Division of Microbial Chemistry and Technology, Atlantic City, New Jersey, September 12-17, 1965. (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 511-524 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Polysaccharide gum was made by fermentation with Xanthomonas campestris NRRL B-1459 in a medium of glucose, minerals, and distillers' solubles. The effect of distillers' solubles on growth rate can be described by the familiar saturation equation. Although a quasistoichiometric relationship was observed between nitrogen utilization and growth, total nitrogen supply was not growth limiting, nor was polymer formation growth associated. Cell growth primarily took place in the early part of the fermentation; polysaccharide biosynthesis occurred throughout the fermentation. Glucose was converted to polysaccharide at a fairly constant yield, which was 70-80% of glucose consumed, under optimum conditions. The kinetic patterns observed indicate that multistage continuous fermentation will be suitable for polysaccharide production.
    Additional Material: 10 Ill.
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    URL: http://dx.doi.org/10.1002/bit.260080405
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  • 39
    Electronic Resource
    Electronic Resource
    Utilization of normal alkanes by yeasts (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 549-565 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A stable mixed yeast culture designated as Culture 4, consisting of Candida intermedia and Candida lipolytica was investigated. The culture was judged stable based on uniformity of fermentation results and the nearly constant ratio of the two organisms at the completion of fermentations. However, the ratio of the two organisms at different times during the fermentation was not determined. The mixed culture grew more rapidly on n-alkanes than did C. intermedia; C. lipolytica did not grow on unsupplemented mineral salt-n-alkane medium. Solid n-alkanes were dissolved in 2,6,0,14-tetramethylpentadecane (pristane) for investigation as carbon sources. With Culture 4, on n-alkanes ranging from pentadecane (C15) through octacosane (C28), cell yields were 74.2-89.5%; generation times were 3.0-8.0 hr. during the exponential growth phase. The fastest growth rates and highest cell yields were obtained with docosane (C22) as substrate. The cells obtained contained 6.75-8.81% nitrogen and 1.9-13.4% lipid. Crude protein yields were 34.4-47.6%. The oxidation of n-alkanes by C. intermedia was studied manometrically with resting whole cells. The alkaneoxidizing system of this organism appears to be constitutive and nonspecific for alkane substrates.
    Additional Material: 5 Ill.
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    URL: http://dx.doi.org/10.1002/bit.260080408
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  • 40
    Electronic Resource
    Electronic Resource
    Heat sterilization of activated carbon (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 631-632 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080414
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  • 41
    Electronic Resource
    Electronic Resource
    Masthead (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966) 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080401
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  • 42
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    Gas monitor and control unit for cell culture systemContribution No. 2, Cell Physiology Facility: Investigations herein reported were conducted under Grant No. ES 30-02, United States Public Health Service, Bureau of State Services. (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 489-509 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The Meta-Stat gas monitor, a component instrument which automatically monitors and controls the pH and gas content of the liquid phase in suspension cell-culture systems, has been developed to provide continuous pH control within ± 0.015 units, as well as continuous oxygen control within 0.5% of the preset level in the range of 0-40% O2.
    Additional Material: 10 Ill.
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    URL: http://dx.doi.org/10.1002/bit.260080404
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  • 43
    Electronic Resource
    Electronic Resource
    Utilization of gas oil by a yeast culture (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 567-580 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A mixed yeast culture (Culture 4) was grown on representative gas oil samples as well as paraffin wax. Culture 4 was found to utilize n-paraffinic hydrocarbons almost quantitatively from most gas oil fractions; significant alteration of other hydrocarbon components was not detected. Generation times of 4.0-9.0hr. were typical during the exponential growth phase in fermentations with various gas oil fractions. Cell yields were 70-90% based on n-paraffin utilization. The culture appeared to exhibit maximum efficiency of n-alkane removal in the C19 to C24 range. The cells recovered from the fermentations contained 8.8-9.3% nitrogen. Paraffin wax also served as a suitable carbon source when dissolved in 2,6,10,14-tertramethylpentadecane (pristane). However, substrate utilization appeared to be incomplete.
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/bit.260080409
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  • 44
    Electronic Resource
    Electronic Resource
    Fermentation mixing scale-up techniques (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 3-24 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Scale-up of a mixing process in fermentation involves breaking the process down into individual but interrelated steps. The effect of mixing on gas-liquid absorption, fluid shear rates, blending, and heat transfer allows each to be considered separately. A method of estimating the mixer size required in a full-scale system from pilot studies illustrates the application of a particular technique.
    Additional Material: 15 Ill.
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    URL: http://dx.doi.org/10.1002/bit.260080103
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  • 45
    Electronic Resource
    Electronic Resource
    A model system for evaluating shear in the design of stirred fermentors (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 71-84 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A model system, utilizing shear-sensitive protozoa, has been developed for characterizing the disruptive forces in agitated systems. The model system gives a measure of the maximum shear stresses in the apparatus being tested, and is particularly useful when tissue fragility is a factor in fermentor design. The time dependency of protozoan disruption is shown and discussed. Breakdown data in conventional stirred vessels and a laminar shear device are presented and discussed.
    Additional Material: 10 Ill.
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    URL: http://dx.doi.org/10.1002/bit.260080107
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  • 46
    Electronic Resource
    Electronic Resource
    Sterilization of tissue-culture medium by filtration on a large laboratory scale (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 153-165 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The design and operation of a permanently-piped plant for sterilizing 10-200 l. of tissue-culture media is described. The plant is sterilized in situ by steam injection, the filtration rate is 2-3 l./min., and the turn-around time for volumes of 100 l. is about 3 hr.
    Additional Material: 4 Ill.
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    URL: http://dx.doi.org/10.1002/bit.260080113
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  • 47
    Electronic Resource
    Electronic Resource
    Masthead (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966) 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080201
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  • 48
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    Mass culture of red halophilic bacteriaIssued as N.R.C. contribution No. 8981. (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 237-245 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Extremely halophilic bacteria, which are able to grow in, and require, saturated or near-saturated salt solutions are both of historical interest and of practical importance as food spoilage organisms. In addition, because of the environment in which they live, their membranes, enzymes, and ribosomes have unusual or unique properties that make them especially worthy of physiological study. A simple method for growing large quantities of extreme halophiles is described, and various growth media, both complex and synthetic are discussed.
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/bit.260080205
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  • 49
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    A chemically defined fermentation medium for the growth of Micromonospora purpurea (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 259-273 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A chemically defined medium for Micromonospora purpurea has been devised, consisting of glucose, a nitrogen source, calcium carbonate, magnesium sulfate, dibasic potassium phosphate, and the required trace quantities of iron, copper, zinc, and manganese. Using washed cell inocula, dry mycelial weights of more than 16 mg./ml. were obtained in 7-day shaken-flask fermentations. Nutrient requirements for M. purpurea are discussed and growth data presented. Sucrose, maltose, starches and dextrins could be substituted for glucose, and resulted in good growth of the organism. A number of amino acids and inorganic nitrogen-containing compounds were capable of utilization as sole nitrogen sources. Weekly serial transfers of the culture in defined medium have shown no diminution in mycelial weights over a four-month period.
    Additional Material: 6 Ill.
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    URL: http://dx.doi.org/10.1002/bit.260080207
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  • 50
    Electronic Resource
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    Studies on the response of activated sludge to shock-loadings (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 321-321 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080213
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  • 51
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    Masthead (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966) 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080101
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    Introduction (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 1-1 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080102
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  • 53
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    Gas absorption in a stirred vessel: Locale of transfer action (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 55-69 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: By means of gas-absorption experiments in a stirred vessel, with various depths of liquid above a properly positioned single-opening pipe-type gas sparger, conclusions are reached about relative contributions to the overall absorption rate by localized actions near the sparger tip, in the impeller region, and from bubbles distributed in the bulk volume of the fluid. Results are discussed for difficulty soluble gases (oxygen in water and chlorine in water) and a substantially soluble gas (chlorine in benzene). In all cases, dissolution rates in the vicinity of the sparger and impeller were significantly large compared with those near free bubbles.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080106
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  • 54
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    Studies with a multiple-rod mixing impeller (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 109-115 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The performance of a multiple-rod mixing impeller was compared to that of conventional turbine impellers in viscous novobiocin beers. The advantages of the multiple-rod impeller were found to be: (1) the power requirement was independent of changes in apparent viscosity of the fermentation beer; and (2) it gave the same novobiocin yield and oxygen-availability rate at about one-half of the power required by turbines.
    Additional Material: 5 Ill.
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    URL: http://dx.doi.org/10.1002/bit.260080110
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  • 55
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    Design and operation of a simple continuous-culture apparatus (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 183-188 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A versatile and simple continuous-culture apparatus is described. With this apparatus, independent control of limiting growth factors and other nutrilites is possible and the conditions of each experiment are reproducible. In view of the synchronized speed of the feeder syringes, flow variation troubles are not encountered. The device allows the performance of growth experiments at different dilution rates simultaneously in a single run which makes the comparison of the results more reliable. The operation of the device has been tested successfully with a study of adenine deaminase induction in yeast.
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/bit.260080115
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  • 56
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    Propagation of Bacillus popilliae in laboratory fermentors (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 247-258 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The insect pathogen Bacillus popilliae Dutky causes a fatal milky disease of Japanese beetle larvae. Spores of the bacterium offer a biological means of controlling this insect. While satisfactory sporulation in vitro has not yet been accomplished, conditions have been developed for the proliferation of vegetative cells in shaken flasks and aerated fermentors. Vegetative cultures are maintained by frequent transfer or by lyophilization. Media based on yeast extract are used routinely, but corn steep liquor and casein hydrolyzates afford comparable yields of 5 × 108 cells/ml. in 16-24 hr. Nutritional requirements have been established for growth in a synthetic medium. Oxygen availability affects the pathway of carbohydrate catabolism and is necessary for optimal growth. In rapidly growing cultures, a short period of maximum viability is characteristically followed by rapid death of the cells. When inoculum size and transfer time are suitably manipulated, viable cell yields reach 1-2 × 109/ml. Alternative methods of propagation, including the addition of particulate carbon, and procedures designed either to neutralize acids or to remove metabolic products by dialysis, do not markedly enhance the yield of cells per volume of medium, although viability may be prolonged.
    Additional Material: 4 Ill.
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    URL: http://dx.doi.org/10.1002/bit.260080206
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  • 57
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    Improved model of a steam-sterilizable electrode for dissolved oxygen determination in culture media (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 621-624 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080412
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  • 58
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    Aeration of concentrated activated sludgePresented at the 150th Annual Meeting of the American Chemical Society, Atlantic City, New Jersey, Sept. 11-17, 1965. (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 379-388 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A multiphase project has been planned to develop a new biological process capable of economically treating high BOD wastes. Herein is presented the results of the first phase of the program, in which the feasibility of growing concentrated microbial cultures was investigated and the oxygen and power requirements for maintaining such cultures were determined. An example is given of the scale-up of power requirements for oxygen transfer in a prototype system.
    Additional Material: 3 Ill.
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    URL: http://dx.doi.org/10.1002/bit.260080306
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  • 59
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    A simple circuit for temperature compensation of membrane-covered electrodes for the determination of oxygen (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 8 (1966), S. 625-629 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260080413
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  • 60
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    Modellversuche zur Peroxygenierung von natürlichen ungesättigten Fetten und Ölen.III. Peroxygenierung α,β-ungesättigter Alkohole (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 31 (1966), S. 7-13 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Wie an γ-Hydroxy-crotonsäuremethylester (III) und α-Hydroxy-vinylessigsäure-methylester (IV) gezeigt wird, führt die Peroxygenierung α,β-ungesättigter Hydroxy-Verbindungen zu Wasserstoffperoxyd und den entsprechenden α,β-ungesättigten Carbonyl-Verbindungen.Der aktivierende Einfluß der olefinischen Doppelbindung auf die Peroxygenierbarkeit von Hydroxy-Verbindungen wird an der Reihe Diäthylcarbinol, Äthyl-vinylcarbinol und Divinylcarbinol nachgewiesen. Auch α-ständige veresterte Carboxylgruppen wirken im geringen Maße aktivierend.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660310102
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  • 61
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    Darstellung und Eigenschaften der 8-Chinolylmercaptomethansulfonsäure (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 175-177 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird über die Darstellung des Natriumsalzes der 8-Chinolylmercaptomethansulfonsäure aus Natrium-8-mercaptochinolinat und Natriumchlormethansulfonat in Dimethylformamid sowie über die Gewinnung der freien Säure berichtet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320310
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  • 62
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    Über die Oxydation von Harnstoff, Semicarbazid und Carbohydrazid mit Natriumhypochlorit (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 190-197 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: In Fortführung von Arbeiten über Hydrazin und Hydrazinderivate(1-5) wurden die Reaktionen von Harnstoff H2N · CO · NH2, Semicarbazid H2N · CO · NH · NH2 und Carbohydrazid H2N · HN · CO · NH · NH2 mit Natriumhyprochlorit in neutralem und alkalischem Medium präparativ und UV-spektroskopisch untersucht.Die bekannte Reaktion zur Bildung von Hydrazin aus Harnstoff und Natriumhypochlorit in alkalischer Lösung wurde insbesondere hinsichtlich der bestehenden Annahme, daß sie nach dem HOFMANNschen Abbau verläuft, erneut diskutiert. Das als Beweis für die Bildung von N-Chlorharnstoff als ersten Reaktionsschritt nach dem HOFMANNschen Abbau angesehene Absorptionsmaximum bei 2450 Å, das durch Oxydation von Harnstoff mit tert.-Butylhypochlorit entsteht, konnte bei der Oxydation mit Natriumhypochlorit ebenfalls beobachtet werden, jedoch nur in neutralem Medium.Bei entsprechenden Oxydationsreaktionen von Semicarbazid und Carbohydrazid mit Natriumhypochlorit traten im Bereich von 2000-3000 Å keine Absorptionen auf, die auf entstandene N--Cl-Bindungen hindeuten könnten. Ein möglicher Reaktionsverlauf bei der Oxydation dieser beiden Verbindungen in alkalischem Medium über intermediär gebildetes Triazan und Tetrazan wird angegeben.Nach einer bisher noch nicht beschriebenen Methode konnten Hydrazindicarbonsäurediamid H2N · CO · HN · NH · CO · NH2 und das primäre Natriumsalz der Cyanursäure NaC3H2N3O3 · H2O durch Oxydation von Semicarbazid bzw. Harnstoff in neutraler Lösung mit Natriumhypochlorit dargestellt werden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320312
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  • 63
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    Zur Verwendung von Dimethylsulfoxid als Lösungsmittel bei kryoskopischen Molekulargewichtsbestimmungen (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 230-234 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird die Möglichkeit des Einsatzes von Dimethylsulfoxid als Lösungsmittel für kryoskopische Molekulargewichtsbestimmungen nach BECKMANN unter Berücksichtigung eigener Erfahrungen beschrieben und die molare Gefrierpunktserniedrigung von Dimethylsulfoxid experimentell zu 4,4° ermittelt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320502
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  • 64
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    Über organische Katalysatoren. LXXVIII. Chelatkatalyse. XIX (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 283-290 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Zersetzungsgeschwindigkeit von Wasserstoffperoxid in Gegenwart von Kobaltchelaten des Bis-(2-aminobenzyliden)-äthylendiamintyps wird in Abhängigkeit von der C-Zahl (n = 2-6) der Diaminkomponente untersucht. Nur die Verbindung mit n = 2 ist katalytisch wirksam. Die Dissoziationskonstanten der Kupferchelate werden potentiometrisch bestimmt. Die Chelatbildung der Innerkomplexe verläuft stufenweise.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320509
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  • 65
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    Darstellung höherer Alkylester von Phosphor-, Phosphon- und Phosphinsäuren durch Umalkylierung (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 33 (1966), S. 188-198 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: In Gegenwart tertiärer Phosphine reagieren höhere Alkylhalogenide bei 140-180°C mit Methyl- oder Äthylestern von Phosphor-, Phosphon- und Phosphinsäuren (I) leicht unter Freisetzung von Methyl- oder Äthylhalogeniden. Dabei entstehen im Sinne einer schrittweisen Umalkylierung die höheren Alkylester der Phosphor-Säuren. Die katalytische Wirkung der tertiären Phosphine beruht auf der primären Bildung quartärer Phosphoniumhalogenide, die sich chne Beeinträchtigung der Esterausbeute auch durch Lithiumchlorid ersetzen lassen.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660330312
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    Untersuchungen über den Aufschluß von Monazit durch Erhitzen mit Kohlenstoff und QuarzHerrn Professor Dr. L. Wolf zum 70. Geburtstag gewidmet (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 34 (1966), S. 83-90 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Reaktion von Monazit mit Kohlenstoff und Quarz wurde bei Temperaturen zwischen 1400°C und 1700°C untersucht. Es bilden sich neben elementarem Phosphor die Silikate der Seltenen Erden und des Thoriums. Diese lassen sich mit Salzsäure extrahieren.
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/prac.19660340110
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    Darstellung der 2-Methyl-1,10-phenanthrolin-6-sulfonsäure (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 173-174 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch DOEBNER-MILLER-Reaktion kann man aus 8-Aminochinolin-5-sulfonsäure das Natriumsalz der 2-Methyl-1,10-phenanthrolin-6-sulfonsäure darstellen, welches leicht in die Säure überführbar ist.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320309
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    Peptidsynthesen unter Anwendung von N-Carbonyl-aminosäure-nitrobenzyl- und nitrophenylestern (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 204-210 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Umsetzung von Salzen der Aminosäure-p-nitrobenzyl- und -p-nitrophenylester mit Phosgen erhält man gut kristallisierende N-Carbonyl-aminosäureester, deren Verwendung bei Peptidsynthesen prinzipiell gezeigt wird.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320314
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    Aromatizität bei Pseudoazulenen. IVIII. Mitteilung s. Fußnote (11).. MO-Berechnungen am Cyclopenta(b)pyridin (Azalen) (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 211-216 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die für Cyclopenta(b)pyridin (Azalen) und seine benzkondensierten Derivate nach der MO-LCAO-Methode in HÜCKELscher Näherung erhaltenen Aussagen über Elektronenverteilung, Reaktivität und Lichtabsorption beweisen das azulenähnliche Verhalten dieser Substanzklasse. Die berechneten Eigenschaften der Azalene stimmen mit vorliegenden experimentellen Daten überein. Die Elektronenverteilung in den Pseudoazulenen hängt von der Elektronegativität des Heteroatoms ab.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320315
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    Acylharnstoffe (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 265-273 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aus 2-Alkyl-2-brom-acylbromiden und Harnstoffen erfolgt die Darstellung von 2-Alkyl-2-brom-acylharnstoffen, aus denen durch Abspaltung von Bromwasserstoff mit Silberoxid 1-(2-Alkyl-cis-Δ2-acyl)-harnstoffe und mit Pyridin 1-(2-Alkyl-trans-Δ2-acyl)-harnstoffe erhalten werden.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320507
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    Zur Darstellung N-substituierter Desylamine (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 307-310 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Ausgehend vom 4-Nitro- und 4-Chlor-4′-methoxy-desylbromid werden durch Umsetzung mit Methyl- und Dimethylamin die entsprechenden Hydrochloride der N-substituierten Desylamine erhalten.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320511
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  • 72
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    Über die Umsetzung von Halogenacylamiden mit Pyridinderivaten (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 311-316 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: α-Halogenacylamide setzen sich mit Pyridin und Derivaten, wie Pyridin-carbonsäureamiden zu quaternären Pyridinderivaten, zu Pyridinium-Verbindungen um, bei Gegenwart von Natrium-amid bilden sich aus Pyridin-carbonsäureamiden, N-Acylamino-pyridin-carbonsäureamide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320512
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    Notiz zur Darstellung von Tropolon-5-aldehyden (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 33 (1966), S. 1-4 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 3,7-Dibromtropolon wird durch Umsetzung mit Formaldehyd und Piperidin und anschließende Oxydation der MANNICH-Base mit KMnO4 in die 5-Formylverbindung umgewandelt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660330101
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    Ω-Diazofettsäureester. III. Reaktionen der Ω-Diazofettsäureester mit Säuren und Säurechloriden (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 34 (1966), S. 262-271 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: ω-Diazofettsäureester werden durch wäßrige Halogenwasserstoffsäuren zu den entsprechenden ω-Halogenfettsäureestern zersetzt, mit verd. H2SO4 entstehen hauptsächlich ω-Hydroxyfettsäureester. Die durch Einwirkung von Benzoylchlorid in Gegenwart von Triäthylamin leicht erhältlichen ω-Benzoyl-diazofettsäureester ermöglichen die Synthese einiger auf anderen Wegen schwierig oder nicht herstellbarer Verbindungen und sind außerdem der Wolffschen Umlagerung zugänglich.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660340505
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    Eine neue Synthese von Diphenylisopropylaminen (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 34 (1966), S. 335-340 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird eine neue Synthese von Diphenylisopropylaminderivaten aus Phenylisopropanolaminen und Benzolkohlenwasserstoffen bei Gegenwart einer Lewis-Säure, wie Aluminiumchlorid, beschrieben.
    Additional Material: 1 Tab.
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    URL: http://dx.doi.org/10.1002/prac.19660340510
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    Studies on the Mixed Gels of Silica, Alumina and Ferric Oxide (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 33 (1966), S. 152-159 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Sol-gel transformation of mixed gels of silica, alumina and ferric oxide has been studied by determining the variations in pH with time of dialysis. For silica-alumina mixtures a pH of 2.9 is invariably reached irrespective of the alumina content of the mixtures. The amount of alumina present in the mixture influences the time of setting of the gel to a very great extent and it decreases with increase of the alumina content of the mixtures. These results have been explained in light of chemical interaction between the two gels to give aluminosilicates as well as in terms of controlled coagulation phenomenon with alumina behaving as a foreign electrolyte for bringing about the gelation of silicic acid.The results of silicic acid, ferric oxide gel forming mixtures are altogether different. In this case the time of gelation increases with the increase in the amount of ferric oxide in the gelation mixture, while a pH of 4.2 is reached irrespective of the amount of ferric oxide present. No evidence for the formation of ferric-silicate is obtained nor the gelation of these mixed sols can be explained in terms of controlled coagulation.The colloidal silica appears to act as protective colloid for the highly acedic ferric oxide sol. Viscometric and pH metric studies on the addition of alumina sol to mixtures of ferric oxide and silica sols indicate that alumina competes with ferric oxide in the formation of mixed gels. Here, too a pH of 2.9 is invariably reached irrespective of the alumina content in the mixed gels.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660330307
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  • 77
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    Flüssige Ionenaustauscher. 2. Beobachtungen bei der Synthese von Di-2-äthylhexylphosphatDiese Arbeit ist ein Teilauszug aus der Dissertation K. HÄUPKE, Math.-Nat. Fakultät der Universität Halle. (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 33 (1966), S. 206-212 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bei der Synthese von Di-2-äthylhexylphosphat aus 2-Äthylhexanol und POCl3 ergab sich eine Abhängigkeit der Zusammensetzung des aus Di-2-äthylhexylphosphat und dem Nebenprodukt Mono-2-äthylhexylphosphat bestehenden Endproduktes von der Dauer der gegenseitigen Einwirkung bei erhöhter Temperatur. Während die Gesamtausbeute an Ester durch ein Maximum läuft, schwankt das Verhältnis Mono- zu Di-2-äthylhexylphosphat periodisch.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660330314
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  • 78
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    Bemerkungen zur Darstellung langkettiger Zinkdialkyle (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 33 (1966), S. 229-234 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Im folgenden werden die Darstellungsbedingungen für langkettige Zinkdialkyle untersucht. Präparative Schwierigkeiten bei der Gewinnung reiner Verbindungen, die je nach Darstellungsmethode bei wachsender Kettenlänge der Zinkdialkyle zunehmen, werden erörtert.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660330502
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  • 79
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    Synthese von kristallin-flüssigen Verbindungen. I. n-Alkyl- und n-Alkoxyderivate des 3-Hydroxy-2,5-diphenyl-pyrazins (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 33 (1966), S. 265-276 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es werden die Synthesen von 2 homologen Reihen des 3-Hydroxy-2,5-diphenyl-pyrazins und 2-Benzoyl-4(5)-phenyl-imidazols beschrieben. p-n-Alkyl- und p-n-Alkoxyphenylglyoxal-hydrate kondensieren unter ammoniakalischen Bedingungen bevorzugt zu den entsprechenden Imidazolylketonen und nur in geringen Ausbeuten zu Hydroxypyrazinen. Die Alkylhomologen des Pyrazins schmelzen ab Äthylderivat zu kristallin-flüssigen Phasen auf, die dem smektischen Typ angehören. Mit wachsenden Flügelgruppen treten Umwandlungspunkte in diesen Phasen auf. Die beiden ersten Glieder der Ätherreihe haben zusätzlich einen nematischen Bereich. Allen Imidazolylketonen fehlen diese Eigenschaften. Der Einfluß der α-ständigen Hydroxygruppe am heterocyclischen Mittelstück der gestreckten Molekeln wird diskutiert.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660330508
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  • 80
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    Die Komplexbildung von Kupfer(II)-salzen mit Veresterungsprodukten der ÄthanolamineProfessor Dr. Leopold Wolf zum 70. Geburtstag gewidmet (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 34 (1966), S. 190-200 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Ester des β-Hydroxy-äthylamins und des Bis-(β-hydroxy-äthyl)-amins bilden mit Kupfer(II)-halogeniden kristalline 1,2-Komplexe, während sich ihre Hydrochloride mit CuCl2 zu Tetrachlorocupraten(II) umsetzen. Aus Lösungen, die Tris-(β-phenyl-carboxy-äthyl)-amin (TPÄ) und Kupfer(II)-halogenide enthalten, kristallisieren Tri-bzw. Tetrahalogenocuprate(II). Die erforderlichen Protonen werden in einer Nebenreaktion von Redoxcharakter geliefert. Partielle Veresterungsprodukte des Tris-(β-hydroxy-äthyl)-amins setzen sich mit Kupfer(II)-salzen zu Koordinationsverbindungen von z. T. innerkomplexem Charakter um. Die Strukturen der dargestellten Verbindungen werden diskutiert.
    Additional Material: 1 Tab.
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    URL: http://dx.doi.org/10.1002/prac.19660340123
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  • 81
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    Über Synthese spasmolytisch wirksamer Substanzen. XX. Synthese neuer basischer Amide von α-Alkoxydiphenyl-essigsäuren (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 31 (1966), S. 14-19 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird die Synthese einer Reihe neuer basischer Amide von α-Alkoxydiphenylessig-säuren beschrieben, deren Alkoxygruppe einerseits verzweigte Alkylgruppen, Alkylaryl-gruppen sowie Alkoxyäthergruppen trägt.
    Additional Material: 1 Tab.
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    URL: http://dx.doi.org/10.1002/prac.19660310103
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  • 82
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    Studies on the formation of complex compounds between Uranyl Nitrate and transitional metal Nitrate. The system: Th(No3)4—UO2(No3)2—H2O (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 31 (1966), S. 55-60 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Determination of conductance, pH, Spectrophotometry, and Refractive-Index measurements of a series of mixed solutions of uranyl nitrate and thorium nitrate, indicate the existence of one definite complex-compound in the solution namely \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm Th(NO}_{\rm 3} {\rm)}_{\rm 4} - {\rm UO}_{\rm 2} ({\rm NO}_{\rm 3})_2 $$\end{document} Monovariation method of NNYAR and PANDE (1), has been followed in the preparation of the solution and in the investigation of properties. Aqueous solution of the uranyl nitrate and thorium nitrate were prepared in such a way that the concentration of uranyl nitrate was kept constant, while that of thorium nitrate was varied systematically, and the physico-chemical properties recorded. When the values are plotted against the concentration of thorium nitrate curves are obtained with the specific breaks. The kink occurs at exact stoichiometric ratio of the concentrations corresponding to the compound noted above.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660310108
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  • 83
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    Studies on the formation of complex compounds between Uranyl Nitrate and transitional metal Nitrate. The system: La(NO3)3—UO2(NO3)2—H2O (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 31 (1966), S. 61-67 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Experiments with the system Uranyl nitrate-Lanthanum nitrate-water viz., Conductance, pH, and spectrophotometry revealed the existence of the following compounds in solution. \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm (1)\,\, La(NO}_{\rm 3} {\rm)}_{\rm 3} - {\rm UO}_{\rm 2} ({\rm NO}_{\rm 3} )_2 {\rm \quad\quad(2)\,\,2La(NO}_{\rm 3} {\rm)}_{\rm 3} - {\rm UO}_{\rm 2} ({\rm NO}_{\rm 3})_2 $$\end{document} A set of 22 mixed solutions was prepared by following Nayar and Pande's monovariation method1. In all the solutions the concentration of uranyl nitrate was kept constant (i. e. M/200), while that of lanthanum nitrate varied systematically from 0.0M to 0.021M. The physico-chemical properties, namely conductivity, pH, and spectrophotometry were used for the investigation of complex-compounds in the above system. When these values are plotted against the varying concentration of Lanthanum nitrate two breaks were obtained in the regular curves at concentrations corresponding to the compounds having the above formulae. The results obtained by all these physico-chemical properties are in excellent agreement leading to the same conclusions.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660310109
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  • 84
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    Physico Chemical Studies on the Metal Chelates of Nitroso R salt, thoron, chromotrope 2 B and chrome azurol S in aqueous solution (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 31 (1966), S. 68-75 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Composition and stability of palladium-Nitroso R Salt chelate, lanthanum, thorium, uranium and palladium chelates of Thoron, lanthanum-Chromotrope 2 B chelate and palladium-Chrome Azurol S chelate have been reported. The range of stability of the chelates with pH have also been determined. The use of Chrome Azurol S, Chromotrope 2 B, Murexide, Thoron, Quinizarin sulphonic acid, and gallocyanine in the complexometric determination of thorium against EDTA has also been reported.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660310110
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  • 85
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    Über organische Katalysatoren, LXXIV. Chelatkatalyse XVII (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 31 (1966), S. 167-178 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Darstellung einer Reihe Schiffscher Basen des Chinolin-2-aldehyds, des Chinolin-8-aldehyds, des 8-Hydroxychinolin-2-aldehyds und des 3-Hydroxychinolin-2-aldehyds wird beschrieben. Eine Übersicht über das katalatorische 2 Verhalten der Metallchelate wird mitgeteilt.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660310309
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  • 86
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    Heterocyclen aus CH-aciden Nitrilen. IV. Addition von Schwefelkohlenstoff an Alkylidenmalonitrile und -cyanessigester (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 31 (1966), S. 205-213 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Alkyliden- bzw. Aralkylidenmalonitrile und -cyanessigester reagieren bei Raumtemperatur mit Schwefelkohlenstoff zu substituierten 6-Amino-2 H-thiopyranthionen-(2), die sich unter Einwirkung von Natronlauge in 6-Mercaptopyridone-(2) und bei der Behandlung mit Mineralsäuren in Gegenwart von Alkohol in 6-Alkylmercapto-thiopyranone-(2) umwandeln.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660310312
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  • 87
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    Zur Kenntnis der Hugershoff-Reaktion. VI. Die Umsetzung von Acetyl-malonsäureäuthyl-esterthioaniliden und anderen Thion-Thiol-tautomeren Verbindungen mit Brom (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 31 (1966), S. 262-268 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Acetyl-malonsäureäthylesterthioanilide cyclisieren mit Brom zu Benzthiazoly-(2)-acetessigsäureäthylestern. Es wurden Versuche unternommen, auch andere Verbindungen mit Thion-Thiol-Tautomerie in der HUGERSHOFF-Reaktion umzusetzen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660310503
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  • 88
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    Zur 1,3-dipolaren Addition der Pyridinium-und Isochinolinium-betaine (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 31 (1966), S. 293-303 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Umsetzung von 2,4-Dinitro-phenyl-pyridiniumchlorid und 2,4-Dinitro-phenyl-isochinoliniumchlorid mit heterocyclischen Hydrazinen führt zu den entsprechenden Hydrazonen des 1-[2,4-Dinitro-anilino]-pentadien-(1,3)-als-(5) bzw. β-[2,4-Dinitro-anilino]-o-styroaldehyds. Durch Erhitzen der Hydrazone in Eisessig bzw. alkohol. Salzsäure erfolgt Ringschluß zu Pyridinium- bzw. Isochinolinium-betainen, die zur 1,3-dipolaren Addition befähigt sind und mit geeigenten Dipolaphilen zu Pyrazolo [1,5-a]pyridinen bzw. Pyrazolo-[5,1-a]isochinolinen cyclisieren.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660310506
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  • 89
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    Über die Darstellung N-substituierter 1-Oxo- und 3-Oxo-1,2,3,4-tetrahydroisochinoline (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 12-19 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Spaltung von Isochromanon-(1) (IV) mit α,α,α′-Trichlordimethyläther oder Phosphoroxychlorid zu 2-(β-Chloräthyl)-benzoylchlorid (V) und Reaktion von V mit primären Aminen werden in guten Ausbeuten N-substituierte 1-Oxo-1,2,3,4-tetrahydroisochinoline (III) erhalten. N-substituierte 3-Oxo-1,2,3,4-tetrahydroisochinoline können durch direkte Umsetzung von Isochromanon-(3) mit primären Aminen dargestellt werden.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320102
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  • 90
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    Über Silikone. XCVI. Darstellung von 1,3,3,5-Tetramethyl-1,1,5,5-tetraphenyl- und 1,3,5-Trimethyl-1,1,3,5,5-pentaphenyl-trisiloxan (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 31-36 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aus Diphenylmethylsilan wurden über das Natriumdiphenylmethylsilanolat mit Dimethyl bzw. Methylphenyldichlorsilan nach der Williamsonschen Synthese 1,3,3,5-Tetramethyl1,1,5,5-tetraphenyl- und 1,3,5-Trimethyl-1,1,3,5,5-pentaphenyl-trisiloxan dargestellt.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320105
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  • 91
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    Eine neue Methode zur Darstellung von Zinkdiarylen (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 54-58 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bortriarylverbindungen reagieren mit Zinkdiäthyl bzw. Zinkdimethyl unter Austausch der Alkyl- und Arylreste. Diese zur Darstellung reiner Zinkdiaryle gut geeignete Methode läßt sich auch auf die Gewinnung bestimmter Zinkdialkyle, z. B. des Zinkdiallyls, übertragen. Durch Einwirkung von Zinkdiäthyl auf Bortribenzyl konnte erstmalig das Zinkdibenzyl in reiner Form isoliert werden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320109
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  • 92
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    Über die Bildung des 1,2-Di-piperidino-cyclohexen-1 (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 98-101 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bei der Umsetzung von α-Chlorcyclohexanon mit Pyperidin in Toluol tritt ein Nebenprodukt auf, das als 1,2-Di-piperidino-cyclohexen-1 identifiziert wird.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320113
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  • 93
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    Röntgenographische Untersuchungen am System Neodymoxid-Ytterbiumoxid (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 113-117 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Im System Nd2O3-Yb2O3 tritt innerhalb eines relativ großen Bereiches Mischkristallbildung ein. Dies konnte durch Präzisionsbestimmung der Gitterkonstanten der einzelnen Mischoxide sowie durch Phasenbetrachtungen bewiesen werden. Bei der Untersuchung der Yb2O3-reichen Seite wurde eine Abhängigkeit der Mischbarkeitsgrenze von der Glühtemperatur gefunden und gedeutet. Die Mischkristalle der Yb2O3-reichen Seite weisen C-Sesquioxidstruktur (D53-Typ) auf. Die Untersuchung der Nd2O3-reichen Seite erfolgte unter Bedingungen, die das Auftreten des Nd2O3 im kubischen C-Typ gewährleisten. Auch hier konnte erhebliche Mischbarkeit nachgewiesen werden.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320301
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  • 94
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    Über die Reaktion von DL-Glycerinaldehyd und seinem Diäthylacetal mit N.N-Bis-(ß-chloräthyl)-hydrazin (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 125-129 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aus einer wäßrigen Lösung von monomerem DL-Glycerinaldehyd wird durch Reaktion mit N,N-Bis-(β-chloräthyl)-hydrazin in schwach alkalischem Medium das entsprechende Hydrazon in nicht analysenreinem Zustand gewonnen. DL-Glycerinaldehyd wie auch sein Diäthylacetal bilden dagegen beim Erhitzen mit N,N-Bis-(β-chloräthyl)-hydrazin-hydrochlorid in methanolischer Lösung in mäßiger Ausbeute β-[N,N-Bis-(β-chloräthyl)-hydrazino]-acrolein-N,N-bis-(β-chloräthyl)-hydrazon-hydrochlorid (I), dessen Struktur durch Synthese aus β-Äthoxy-acrolein-diäthylacetal und N,N-Bis-(β-chloräthyl)-hydrazin-hydrochlorid bewiesen wurde. Zur Bildung von I wird eine Dehydratisierung des Glycerinaldehyds bzw. seines Acetals unter Eliminierung der α-ständigen OH-Gruppe angenommen, wobei intermediär β-Hydroxyacrolein bzw. ein Derivat davon entsteht. Methylglyoxal, das bisher als einziges Dehydratisierungsprodukt des Glycerinaldehyds bekannt ist (Eliminierung der β-ständigen OH-Gruppe), und auch 1,3-Dihydroxyaceton liefern unter gleichen Bedingungen kein I. Dagegen tritt, besonders stark bei der Umsetzung mit Dihydroxyaceton, eine Spaltung der N-N-Bindung des Hydrazin-Lostes ein.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320303
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  • 95
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    Über 2,5-Diketopiperazine, II. Die Umsetzung des 2,5-Diketopiperazins mit Aldehyden und Nitrosoverbindungen (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 158-166 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: In der vorliegenden Arbeit wurde die Reaktionsfähigkeit der beiden Methylengruppen im 2,5-Diketopiperazin durch die Umsetzung mit aromatischen, heterocyclischen und aliphatischen Aldehyden eingehend untersucht. Dabei konnte festgestellt werden, daß auch aliphatische Aldehyde mit in Nachbarschaft zur C=O-Bindung stehenden aktivierenden Gruppen mit 2,5-Diketopiperazin reagieren. Ebenfalls war es möglich, Nitrosoverbindungen auf diese Weise zur Umsetzung zu bringen. Einige Benzylidenderivate wurden reduktiv in die entsprechenden Benzylderivate überführt.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320307
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    Reaktionen mit organischen Aziden, III. Über die Gasphasepyrolyse von AklylazidenAnm. bei der Korrektur: Photolyse von Alkylaziden siehe R. M. MORJARTY u. M. RAHMAN, Tetrahedron 21, 2877 (1865). (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 178-189 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Acht verschiedene Alkylazide wurden bei Temperaturen zwischen 350 und 410°C im Argonstrom zersetzt; die mittlere Verweilzeit betrug 5-10 sec. Die primär gebildeten Alkylnitrene stabilisieren sich vorzugsweise unter 1,2-Hydridverschiebung, daneben treten in geringerem Ausmaß 1,2-Umlagerungen unter Wanderung einer Alkylgruppe auf. Bei der Zersetzung von tert.-Butylazid, wo eine 1,2-Hydridverschiebung nicht möglich ist, wird die nucleophile 1,2-Umlagerung unter Wanderung einer Methylgruppe zur Hauptreaktion. Intramolekulare C-H-Einschiebungsreaktionen unter Bildung von Pyrrolidinderivaten konnten nicht nachgewiesen werden. Intramolekulare C-H-Einschiebungen unter Bildung von Aziridinen traten in geringem Umfang bei der Zersetzung von Isobutyl- und tert.-Butylazid, in beträchtlichem Maße bei der Zersetzung von Äthylazid auf.Bei der Gasphasepyrolyse in Gegenwart von Cyclohexan wurden dieselben Produkte erhalten wie bei der reinen Azid-Pyrolyse. Eine intermolekulare C-H-Einschiebung unter Bildung der entsprechenden Cyclohexylamine ließ sich bei Einsatz von Stickstoffwasserstoffsäure, von Methylazid und von n-Butylazid nachweisen.Das bei der Autoklav-Pyrolyse von p-Toluolsulfonylazid in Cyclohexan entstehende Nitren reagiert zu 20% unter intermolekularer C-H-Einschiebung zu N-Cyclohexyl-ptoluolsulfonamid.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320311
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  • 97
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    Über die Si—N-Bindung. XX. Darstellung von N-Trialkylsilyl-aminosäure-alkylestern. II (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 225-229 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es werden die physikalischen Daten einiger N-Trialkylsilyl-aminosäure-alkylester mitgeteilt.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320501
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  • 98
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    Isothiocyanate. VI. Thioamide aus Arylisothiocyanaten (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 259-264 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Natriumverbindungen des Benzoylacetonitrils und des Benzoylacetons lassen sich in absolutem Äthanol an Arylisothiocyanate anlagern. Dimedon wird in Benzol bzw. Acetonitril in Gegenwart von Triäthylamin an Arylisothiocyanate addiert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320506
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  • 99
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    Isothiocyanate. V. N,N′-Aryl-substituierte Dithiomalonsäurediamide. II (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 254-258 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Als Zwischenstufe der Synthese N,N′-aryl-substituierter Dithiomalonsäurediamide aus Arylisothiocyanaten und Natriumacetylaceton in absolutem Äthanol tritt die Natriumverbindung des N-Aryl-diacetyl-thioacetamids auf. Ausgehend von dieser Zwischenstufe können durch Reaktion mit einem zweiten Molekül Arylisothiocyanat Dithiomalonsäurediamide dargestellt werden, deren N-Atome ungleich durch Arylreste substituiert sind. Derartige Verbindungen werden auch durch Umsetzen eines Gemisches zweier Senföle mit Natriumacetylaceton erhalten.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320505
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  • 100
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    Über Ionenaustauscherharze mit komplexbildenden Ankergruppen. XXIII. Die komplexchemischen Eigenschaften eines Chelatharzes mit Sarkosin-Ankergruppen (1966)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 32 (1966), S. 291-306 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: p. a. Sarkosin-Harz ist ein perlförmiges, helles Chelatharz auf Polystyrolbasis, das seiner chemischen Struktur nach als N-p-Polyvinylbenzyl-N-Methylaminoessigsäure anzusprechen ist. Es wird in vorliegender Arbeit hinsichtlich seiner komplexchemischen Eigenschaften gegenüber H⊕, Alkaliionen, Erdalkaliionen, Ag⊕, Cu2⊕, Ni2⊕, Co2⊕, Zn2⊕, Mn2⊕, Cd2⊕, Pb2⊕, Sn2⊕, Hg2⊕, Fe3⊕, Cr3⊕, Al3⊕, Ga3⊕, Seltenerd-Ionen, Bi3⊕, Th4⊕ und Zr4⊕ untersucht. Aus dem experimentellen Material wird eine Theorie über die Strukturen der verankerten Komplexe und die Ursache der spezifischen Eigenschaften entwickelt. Die Verwertbarkeit dieser Ergebnisse liegt auf analytischem und metallurgischem Gebiet.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19660320510
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