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  • 1
    Electronic Resource
    Electronic Resource
    Binary freezing point diagrams for a number of long-chain fatty acids in dimethyl sulfoxide (1968)
    s.l. : American Chemical Society
    Journal of chemical & engineering data 13 (1968), S. 265-267 
    Details
    ISSN: 1520-5134
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/je60037a039
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  • 2
    Electronic Resource
    Electronic Resource
    Preparation and properties of the 6-octadecenamides (1980)
    s.l. : American Chemical Society
    Journal of chemical & engineering data 25 (1980), S. 88-89 
    Details
    ISSN: 1520-5134
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/je60084a029
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  • 3
    Electronic Resource
    Electronic Resource
    Binary freezing-point behavior of methyl and ethyl esters of positional and geometric isomers of octadecenoic acid (1971)
    s.l. : American Chemical Society
    Journal of chemical & engineering data 16 (1971), S. 473-475 
    Details
    ISSN: 1520-5134
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/je60051a018
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  • 4
    Electronic Resource
    Electronic Resource
    Using ecological diversity measures with bacterial communities (2003)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 43 (2003), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: There are many ecological diversity measures, but their suitability for use with highly diverse bacterial communities is unclear and seldom considered. We assessed a range of species richness and evenness/dominance indices, and the use of species abundance models using samples of bacteria from zinc-contaminated and control soils. Bacteria were assigned to operational taxonomic units (OTUs) using amplified ribosomal DNA restriction analysis of 236 clones from each soil. The reduced diversity apparent in the contaminated soil was reflected by the diversity indices to varying degrees. The number of clones analysed and the weighting given to rare vs. abundant OTUs are the most important considerations when selecting measures. Our preferences, arrived at using theory and practical experience, include: the log series index alpha; the Q statistic (but only if coverage is 50% or more); the Berger–Parker and Simpson's indices, although their ecological relevance may be limited; and, unexpectedly, the Shannon–Wiener and Shannon evenness indices, even though their meanings may not be clear and their values inaccurate when coverage is low. For extrapolation, the equation for the log series distribution seems the best for extrapolating from OTU accumulation curves while non-parametric methods, such as Chao 1, show promise for estimating total OTU richness. Due to a preponderance of single-occurrence OTUs, none of the five species abundance models fit the OTU abundance distribution of the control soil, but both the log and log normal models fit the less diverse contaminated soil. Species abundance models are useful, irrespective of coverage, because they address the whole distribution of a sample, aiding comparison by revealing overall trends as well as specific changes in particular abundance classes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6941.2003.tb01040.x
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  • 5
    Electronic Resource
    Electronic Resource
    Zinc contamination decreases the bacterial diversity of agricultural soil (2003)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 43 (2003), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Around half a million tonnes of biosolids (sewage sludge dry solids) are applied to agricultural land in the United Kingdom each year, and this may increase to 732 000 t by 2005/6. The heavy metals contained in biosolids may permanently degrade the microbial decomposer communities of agricultural soils. We used amplified ribosomal DNA restriction analysis of the extractable bacterial fraction to compare the diversity of a zinc-contaminated soil (400 mg kg−1 Zn; pH 5.7 and 1.36% Corg) with that of a control soil (57 mg kg−1 Zn; pH 6.2 and 1.40% Corg) from a long-term sewage sludge experiment established in 1982 at ADAS Gleadthorpe. Comparison of the restriction fragment length polymorphisms of 236 clones from each soil suggested that the stress caused by zinc toxicity had lowered bacterial diversity. There were 120 operational taxonomic units (OTUs) in the control soil, but only 90 in the treated soil, a decrease of 25%. While the control soil had 82 single-occurrence OTUs the contaminated soil had only 52. The fall in diversity was accompanied by a decrease in evenness. The most abundant OTUs in the contaminated soil (which tended to be common to both soils) accounted for a higher proportion of clones than in the control. The most dominant OTU, in both soils, belonged to the Rubrobacter radiotolerans group of the high G+C Gram-positive bacteria. The data was also used to develop efficient sampling strategies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6941.2003.tb01041.x
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  • 6
    Electronic Resource
    Electronic Resource
    trans-4-[(4-Dimethylaminophenyl)iminomethyl]-N-methylpyridinium para-toluenesulfonate (2001)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 857-858 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: In the title compound, C15H18N3+·C7H7O3S−, the phenylene and pyridyl rings are somewhat twisted with respect to each other, forming a dihedral angle of 23.49 (6)°. The compound contains a dipolar chromophoric cation, but crystallizes in the centrosymmetric space group P21/n and is thus not expected to display quadratic non-linear optical effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270101008009
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  • 7
    Electronic Resource
    Electronic Resource
    trans-4-[4-(Dimethylamino)phenyliminomethyl]-N-phenylpyridinium hexafluorophosphate (2000)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. 1487-1489 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The crystal structure of the dipolar chromophoric title compound, C20H20N3+·PF6−, is described. The phenylene and pyridyl rings are almost coplanar [dihedral angle 7.5 (2)°], but the phenyl substituent forms a dihedral angle of 56.6 (1)° with the pyridyl ring. The compound crystallizes in the non-centrosymmetric space group Cc and is a likely candidate for the display of quadratic non-linear optical effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270100012543
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  • 8
    Electronic Resource
    Electronic Resource
    Lymphoma arising in an S-pouch after total proctocolectomy for ulcerative colitis (2000)
    Springer
    Diseases of the colon & rectum 43 (2000), S. 540-543 
    Details
    ISSN: 1530-0358
    Keywords: Lymphoma ; Cancer ; Ulcerative colitis ; Ileal pouch ; Proctocolectomy ; Chemotherapy ; Radiation therapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The gastrointestinal tract is the most common extranodal site of primary non-Hodgkin's lymphoma. We present a case of a 50-year-old male with primary B cell lymphoma arising in an S-pouch eight years after a total proctocolectomy for ulcerative colitis. After chemoradiotherapy the patient remained asymptomatic, with an intact S-pouch. Pouch conservation is feasible in patients with primary lymphoma of the pouch, using chemoradiotherapy and close follow-up examinations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02237202
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  • 9
    Electronic Resource
    Electronic Resource
    Hemodynamic sequelae of combined arteriovenous injury in an experimental canine hindlimb model: Venous ligation vs. repair (1994)
    Springer
    Annals of vascular surgery 8 (1994), S. 166-171 
    Details
    ISSN: 1615-5947
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The hemodynamic effects of combined venoarterial injury and stasis were studied in the hindlimbs of 10 dogs. Femoral arterial blood flow and pressure, peripheral venous pressure, and peripheral resistance were measured after the restoration of blood flow following venoarterial injury and a 4-hour period of occlusion for up to 72 hours. In one limb of each animal both the artery and vein were repaired, whereas only the artery was repaired in the other limb and the vein was ligated. Arterial blood flow was similar in both groups but was significantly diminished from baseline for the first 30 minutes after restoration of blood flow, but then it became significantly reduced in the limbs with venous ligation when compared with values in those with venous repair. By 72 hours the flow on both sides returned to control values. Peripheral venous hypertension and edema occurred in all 10 limbs with venous ligation and persisted for the 72-hour experimental period. In the 10 limbs with venous repair, edema occurred in four and venous hypertension in none. The peripheral resistance was elevated on both sides; this elevation persisted for 75 minutes and then dropped to control values. None of the repaired arteries and only one repaired vein thrombosed during the experiment. Combined venous and arterial occlusion for 4 hours reduced both the amount of arterial flow and its subsequent rate of increase compared with changes seen after release of an actue venous occlusion. The rate of increase was enhanced by repair of the affected venous segment compared with simple venous ligation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02018865
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  • 10
    Electronic Resource
    Electronic Resource
    Electron spin resonance studies of propagating radicals in polymerization. II. Acrylate propagating radicals (1974)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 12 (1974), S. 679-688 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Ferric chloride-photosensitized free-radical initiation was used to generate propagating radicals in polymerization of acrylic acid (AA), methyl acrylate (MA), ethyl acrylate (EA), butyl acrylate (BA), acrylamide (A), and diacetone acrylamide (DAA) in rigid glasses of methanol, ethanol, n-propanol, isopropanol, or acetone at near liquid nitrogen temperatures. When the temperatures of the glasses were increased, primary radicals derived from the solvents reacted with the monomers to yield propagating radicals. Formation and conformational changes of the propagating radicals at different temperatures were studied by electron spin resonance (ESR) spectroscopy. It was concluded that one type of propagating radical was formed in all cases. However, when the temperature of the rigid glass was increased, the structural conformation of the radical that initially allowed the near-equivalent interaction of the α-hydrogen and one of the β-hydrogens with the unpaired electron generated a three-line spectrum.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1974.170120317
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