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  • 1990-1994  (6)
  • 1965-1969  (9)
  • Chemistry  (12)
  • Chemical Engineering  (2)
  • Electron Microscopy  (2)
  • Apolipoprotein B-48  (1)
  • Nuclear reactions
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Year
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  • 1
    Electronic Resource
    Electronic Resource
    Alterations in apolipoprotein B-48 in the postprandial state in NIDDM (1994)
    Springer
    Diabetologia 37 (1994), S. 1259-1264 
    Details
    ISSN: 1432-0428
    Keywords: Apolipoprotein B-48 ; triglyceride-rich lipoproteins ; NIDDM ; cholesterol ; triglyceride
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The intestine is a major site of cholesterol synthesis and produces apolipoprotein B-48, which is critical for intestinal cholesterol absorption and secretion. The purpose of this study was to examine postprandial changes in apolipoprotein B-48 in diabetes. Six non-insulin-dependent diabetic patients and six non-diabetic control subjects were given a high-fat meal (1300 kcal) and blood samples were taken pre- and postprandially, from which the triglyceride-rich lipoprotein fraction was isolated by ultracentrifugation (density〈1.006 g/ml). Apolipoprotein B-48 was separated on 4–15% gradient gels and quantified as a percentage of the fasting concentration by densitometric scanning. Total protein, triglyceride and cholesterol in the triglyceride-rich lipoprotein fraction, blood glucose, and serum insulin were also measured. Diabetic patients exhibited a postprandial triglyceride-rich apolipoprotein B-48 profile significantly different from that of control subjects (p〈0.05). The triglyceride and total protein concentration in the triglyceride-rich lipoprotein fraction mirrored the post-prandial profile and apolipoprotein B-48 in both groups. Significantly different patterns for triglyceride (p〈0.02) and total protein (p〈0.05) following the fat-rich meal were observed in the two groups. Fasting and postprandial triglyceride-rich lipoprotein cholesterol and total apolipoprotein B were significantly higher in diabetic patients than in control subjects (p〈0.05). Since apolipoprotein B-48 is the structural protein of intestinally-derived lipoprotein particles, these studies suggest an abnormality in intestinal lipoprotein metabolism in diabetes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00399800
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  • 2
    Electronic Resource
    Electronic Resource
    A case of juvenile lipidosis: Electron microscopic, histochemical and biochemical studies (1968)
    Springer
    Acta neuropathologica 11 (1968), S. 122-139 
    Details
    ISSN: 1432-0533
    Keywords: Juvenile Lipidosis ; Electron Microscopy ; Histochemistry ; Biochemistry ; Granular Lipid Inclusions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Elektronenmikroskopische, histochemische und biochemische Untersuchungen eines Falles von juveniler Lipidose werden mitgeteilt. Die neuronalen Einschlüsse sind zumeist von einer unit membrane umgeben und zeigen fingerabdruckähnliche Muster. Membranovesiculäre Körperchen finden sich ebenfalls in den Nervenzellperikaryen; typische granuläre Lipofuscinkörperchen werden aber nicht gesehen. Die Astrocyten der Rinde enthalten eine ähnliche Art von Einschlüssen, von denen aber die Einschlüsse in den Astrocyten der Marksubstanz völlig verschieden sind. Die Lokalisation der Aktivität von saurer Phosphatase in allen Einschlußtypen läßt an ihre mögliche lysosomale Natur denken. Die biochemische Analyse deckt keine spezifischen Abweichungen auf.
    Notes: Summary Electron microscopic, histochemical and biochemical studies of a case of juvenile lipidosis have been presented. The neuronal inclusions were mostly unit membranebound with fingerprint-like patterns. Membrano-vesicular bodies were also found in the neuronal perikarya, but “typical” granular lipofuscin bodies were not seen. Cortical astrocytes contained a similar type of inclusion but the inclusions in the astrocytes in the white matter were quite different. The localization of acid phosphatase activity in all types of inclusions suggests their possible lysosomal nature. Biochemical analysis failed to pin-point any specific abnormalities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00690216
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  • 3
    Electronic Resource
    Electronic Resource
    Abnormal sarcolemmal nuclei encountered in several cases of dystrophia myotonica (1969)
    Springer
    Acta neuropathologica 12 (1969), S. 183-188 
    Details
    ISSN: 1432-0533
    Keywords: Dystrophia myotonica ; Electron Microscopy ; Sarcolemmal Nuclei ; Myofibrillar Material
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung In fünf Fällen von Dystrophia myotonica zeigte die elektronenoptische Untersuchung von bioptisch entnommenem Material zentrale und subsarkolemmale Kerne, die komplexe vacuoläre Areale um myofibrilläres Material enthalten. Diese bisher nicht beobachtete Veränderung könnte durch Verlagerung von myofibrillärem Material in den Kern während seiner Wanderung in das Faserzentrum durch Invagination, aber nicht Durchbrechung der Kernmembran bedingt sein.
    Notes: Summary In five cases of dystrophia myotonica electron microscope preparations of muscle taken at biopsy showed both centrally placed and subsarcolemmal nuclei containing complex vacuolar areas enclosing myofibrillar material. It is suggested that this appearence, which has not been seen in any other condition, may be due to the forcing of myofibrillar material into the nucleus during its migration to the centre of the fibre invaginating but not breaching its membrane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00692505
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  • 4
    Electronic Resource
    Electronic Resource
    Numerical solution of the Navier-Stokes equation for flow past spheres: Part II. Viscous flow around circulating spheres of low viscosity (1967)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 13 (1967), S. 220-224 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Steady state solutions of the Navier-Stokes equations for Reynolds numbers of 0.1, 1, 50, 100, and 200 have been obtained by using finite-difference methods. The effects of radial and angular step size and wall proximity have been investigated. Results were found in the form of stream function and vorticity distributions with pressure distributions and drag coefficients calculated from them. The results compare favorably with experimental data and show a steady trend from Hadamard-Rybczynski flow to boundary-layer flow after Levich-Chao-Moore. For a circulating sphere of low viscosity there is no flow separation indicated at Reynolds numbers equal to or less than 200.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690130207
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  • 5
    Electronic Resource
    Electronic Resource
    Mass transfer with chemical reaction from single gas bubbles (1967)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 13 (1967), S. 379-383 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Numerical solutions of the equations that describe steady state, forced-convection mass transfer around single circulating or noncirculating gas bubbles have been obtained for both first- and second-order chemical reaction conditions. For the noncirculating bubbles, solutions have been obtained up to Reynolds numbers of 200 with Kawaguti velocity profiles used to describe the flow. In the case of circulating gas bubbles, Kawaguti profiles have been utilized up to Reynolds numbers of 80, while the potential flow velocity profiles have been used for higher Reynolds numbers. The numerical results for circulating gas bubbles have been compared with penetration theory for both first- and second-order chemical reactions. For the case of noncirculating gas bubbles the solutions for physical mass transfer have been compared with the Ranz and Marshall correlation as well as with the results of Griffith and the more recent work of Tsubouchi and Masuda.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690130232
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  • 6
    Electronic Resource
    Electronic Resource
    Comparative crystal morphology study using WAXS and CDT techniques (1991)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 42 (1991), S. 2703-2711 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Changes brought about in the crystal morphology of drawn (oriented) PET fibers following both heat and liquid treatments were studied using wide angle X-rays and critical dissolution time techniques. The results obtained showed that the two techniques were sensitive to different but closely related morphological properties of the polymer, the former being sensitive to the apparent degree of the crystalline content, and the latter, a measure of the size of such crystallites that were produced.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1991.070421008
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  • 7
    Electronic Resource
    Electronic Resource
    Anionic copolymerization of styrene and butadieneIssued as N.R.C. No. 8413. (1965)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 85 (1965), S. 273-279 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Es wurde der Versuch unternommen, das ungewöhnliche kinetische Verhalten der durch Butyllithium in Kohlenwasserstoffen als Lösungsmittel ausgelösten Copolymerisation von Butadien und Styrol experimentell zu analysieren. Dabei wurde festgestellt, daß die Reaktionsgeschwindigkeit von Styrol mit Polybutadienyllithium mit und ohne Butadien dieselbe ist und daß sich die Reaktion von Butadien mit Polystyryllithium durch eine sehr große Geschwindigkeit auszeichnet. Der kinetische Verlauf der Copolymerisation kann durch Annahme von vier normalen bimolekularen Reaktionsschritten erklärt werden. Es ist nicht nötig, eine bevorzugte Absorption an den Reaktionszentren anzunehmen, um den anfänglich großen Gehalt von Butadien im Copolymeren zu erklären.
    Notes: An attempt has been made to analyse experimentally the unusual copolymerization of butadiene with styrene initiated by Butyllithium in hydrocarbon solvents. The rates of reaction of styrene with polybutadienyllithium have been measured in both the presence and absence of butadiene, and found to be the same. The reaction of butadiene with polystyryllithium is found to be extremely fast. It is thought that the copolymerization can be explained in terms of four normal bimolecular reactions. No recourse has to be taken to preferential absorption at the reaction centre to explain the initial high butadiene content of the copolymer.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1965.020850122
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  • 8
    Electronic Resource
    Electronic Resource
    The synthesis of polymers via acylation of triphenylamine (1965)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 82 (1965), S. 53-59 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Kondensation von Triphenylamin mit Bissäurechloriden gab mit Zinkchlorid bei 25°C oder mit Aluminiumchlorid bei 5°C lösliche, lineare Polymere. Phosgen, Thionylchlorid und Dichlormethan kondensierten mit Triphenylamin ebenfalls zu Polymeren. Die Substitution in p-Stellung erfolgte nur an zwei Phenylresten bei Verwendung von ZnCl2. Die Substitution am dritten Phenylrest in Gegenwart von AlCl3 führte zu vernetzten Polymeren, was durch Änderung der Bedingungen vermeidbar war.
    Notes: Linear, soluble polymers were prepared by condensing triphenylamine with diacid chlorides in the presence of zinc chloride at 25°C. or aluminum chloride at 5°C. Polymers were also obtained from condensations of phosgene, thionyl chloride, and dichloromethane with triphenylamine. Substitution occurred in the para-position on only two of the phenyl rings when zinc chloride was used. Substitution on the third ring which resulted in cross-linked polymers occurred in the presence of aluminum chloride but was avoided by modifying the conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1965.020820106
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  • 9
    Electronic Resource
    Electronic Resource
    Corphin, a Corrinoid-Porphinoid Ligand System (1968)
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 7 (1968), S. 623-625 
    Details
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/anie.196806231
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  • 10
    Electronic Resource
    Electronic Resource
    Corphin, ein corrinoid-porphinoides Ligandsystem (1968)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 80 (1968), S. 622-625 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19680801518
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