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  • 1
    Electronic Resource
    Electronic Resource
    Synthesis, characterization, and kinetic study on the thermal decomposition of polyamidoethers (1989)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 37 (1989), S. 1559-1565 
    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: Some new polyamidoethers have been synthesized by condensation reaction of N,N'-dichloroacetyl-1,4-phenylene-diamine with bisphenols (4,4'-isopropylidenediphenol, 4,4'-dihydroxydiphenyl sulfone, 4,4'-dihydroxydiphenyl sulfide, and 4,4'-dihydroxybiphenyl) in N-methylpyrrolidone medium using DB-24-Crown-8 as a phase-transfer catalyst. The structure of these polymers has been characterized by infrared (i.r.) and 1H nuclear magnetic resonance (NMR) spectroscopy. Kinetic method of thermal decomposition of these polymers and their 2% mixture with polyvinylchloride (PVC) has been studied.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1989.070370610
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Quantitative and qualitative IR studies of some synthesized aromatic polysulfides (1986)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 31 (1986), S. 2315-2323 
    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: Quantitative and qualitative IR analysis of some synthesized aromatic homo polysulfides and copolysulfides based on 4,4-oxydibenzenethiol (IV), 4,4-dimercaptodiphenyl sulfide (I) and bis-(4-fluorophenyl) Sulfone (II) in 1-methyl-2-pyrrolidone (NMP) has been done. A satisfactory agreement of experimental results with theory was observed.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1986.070310728
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The properties of some poly(arylene ether sulfones) (1980)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 25 (1980), S. 821-828 
    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: Some 2,4′-substituted poly(arylene ether sulfones) have been prepared and their properties compared with those of the conventional 4,4′ homopolymer. The introduction of the comonomer leads to a small increase in yield stress and to a greater tendency to brittle fracture, which can be demonstrated from fracture surface micrographs.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1980.070250510
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  • 4
    Electronic Resource
    Electronic Resource
    Synthesis of Uridine with Methylene-2-thiohydantoin as 5-Substituent (1994)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1994 (1994), S. 619-621 
    Details
    ISSN: 0170-2041
    Keywords: Uridine, methylene-2-thiohydantoin derivative ; Nucleosides ; 2-Thiohydantoin ; Herpes simplex virus ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 5-Formyl-1-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)uracil (4) was synthesized from 5-formyluracil (2) and 1,2,3,5-tetra-O-acetyl-β-D-ribofuranose (3) and condensed with 2-thiohydantoin derivatives 5 by using piperidine as the catalyst to give 5-(uridin-5-ylmethylene)-2-thiohydantoin (8a) and 3-phenyl-5-(uridin-5-ylmethylene)-2-thiohydantoin (8b) after deprotection with sodium methoxide in methanol. Compound 8a was also obtained in an inversed reaction sequence from 5-formyluracil starting with condensation with 2-thiohydantoin and then with 3. The compounds 8a and 8b did not show any activity against HSV-1 or HIV-1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199419940613
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  • 5
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    Sublethal impacts of heavy metals on antioxidant enzymes and biochemical parameters in rohu (Labeo rohita) (2021)
    In:  http://aquaticcommons.org/id/eprint/23107 | 18721 | 2018-06-17 20:16:29 | 23107 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-12
    Description: The present research was designed to study and compare the biochemical parameters in Labeo rohita due to exceptional nutritional value of this fish as a protein source in developing countries. The protein and heavy metal (Zn, Cu, Ni) activities were determined spectrophotometrically. The proximate analysis of L. rohita collected from different localities of Pakistan revealed that the protein (19.97%) and ash contents (1.76%) were highest in hatchery L. rohita while the fat (0.84%), carbohydrate (5.39%) and dry matter contents (24.11%), were maximum in the river L. rohita. In comparison to the hatchery and river L. rohita, the moisture contents (81.42%) were the highest in farmed fish. During enzymatic analysis, maximum activities of the peroxidase, α- amylase and mutarotase were recorded in hatchery fish whereas the catalase and superoxide dismutase activities were found to be the highest in farmed fish. The maximum accumulation of Cu and Ni metals were observed in hatchery fish and least in farmed fish and the highest Zn accumulation was observed in river fish. Analysis of variance on catalase, peroxidase, α-amylase activity and metal accumulation showed statistically significant differences at p〈0.05 among sampling sites and fish organs and interaction between sampling sites and fish organs.
    Keywords: Aquaculture ; Biology ; Fisheries ; Aquaculture ; Enzymes ; Proximate analysis ; Antioxidant enzymes ; Metals ; Labeo rohita ; Pakistan
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 668-683
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