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  • Chemistry  (37)
  • Agglutination  (2)
  • Presbytis entellus  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Diversity of potential microbial parasites colonizing sclerotia of Macrophomina phaseolina in soil (1996)
    Springer
    Biology and fertility of soils 22 (1996), S. 136-140 
    Details
    ISSN: 1432-0789
    Keywords: Key wordsMacrophomina phaseolina ; Antagonists ; Germination ; Agglutination ; Pseudomonas fluorescence ; Trichoderma harzianum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The colonization of Macrophomina phaseolina sclerotia by microbial parasites was evaluated in unsterilized field soil at different levels of soil moisture (0, –5, and –10 kPa) and temperature (20, 30, and 40°C). The maximum colonization of sclerotia was recorded in soil held at –5 or –10 kPa at 30–40°C. Trichoderma harzianum isolate 25–92 and Pseudomonas fluorescens isolate 4-92 were recorded as potential sclerotial parasites, and they significantly (P=0.05) reduced the germination of sclerotia by 60–63%. Cells of P. fluorescens and buffer-washed conidia of T. harzianum were completely agglutinated at 28°C with crude agglutinin of M. phaseolina. The ability of different antagonists to parasitize the sclerotia were correlated with the agglutination ability of the antagonists.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00384445
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  • 2
    Electronic Resource
    Electronic Resource
    Diversity of potential microbial parasites colonizing sclerotia of Macrophomina phaseolina in soil (1996)
    Springer
    Biology and fertility of soils 22 (1996), S. 136-140 
    Details
    ISSN: 1432-0789
    Keywords: Macrophomina phaseolina ; Antagonists ; Germination ; Agglutination ; Pseudomonas fluorescence ; Trichoderma harzianum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The colonization of Macrophomina phaseolina sclerotia by microbial parasites was evaluated in unsterilized field soil at different levels of soil moisture (0,-5, and-10 kPa) and temperature (20, 30, and 40°C). The maximum colonization of sclerotia was recorded in soil held at-5 or-10 kPa at 30–40°C. Trichoderma harzianum isolate 25–92 and Pseudomonas fluorescens isolate 4–92 were recorded as potential sclerotial parasites, and they significantly (P=0.05) reduced the germination of sclerotia by 60–63%. Cells of P. fluorescens and buffer-washed conidia of T. harzianum were completely agglutinated at 28°C with crude agglutinin of M. phaseolina. The ability of different antagonists to parasitize the sclerotia were correlated with the agglutination ability of the antagonists.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00384445
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Insectivory and its significance to langur diets (1991)
    Springer
    Primates 32 (1991), S. 237-241 
    Details
    ISSN: 0032-8332
    Keywords: Insectivory ; Diet ; Presbytis entellus ; Energy/nutrient maximization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Earlier studies on Hanuman langurs (Presbytis entellus) around Jodhpur found them entirely vegetarian (Mohnot, 1974;Winkler, 1988). However, recent observations in the open scrub forests of Jodhpur reveal that scale insects may constitute a regular part of their diet and that insectivory is particularly prevalent in the monsoon months July – September. The insect eating in this habitat seems to support the “Energy/nutrient maximization” hypothesis ofHamilton andBusse (1978).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02381181
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  • 4
    Electronic Resource
    Electronic Resource
    Studies on polymerization of vinyl acetate using ylide as an initiator and degradative transfer agent (1989)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 27 (1989), S. 807-815 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Polymerization of vinyl acetate initiated by β-picolinium p-chlorophenacylide was carried out at 30, 35, and 40°C, using conventional dilatometric technique. The initiator and the monomer exponent values were 0.80 ± 0.15 and unity, respectively. The polymerization was inhibited in the presence of hydroquinone, but was favored by nonpolar solvent and polymerization temperature. The energy of activation was 90.3 KJ mol-1. An average value of kp2/kt for the present system was found to be 0.37 × 10-2. The results are explained in terms of a radical mode of polymerization with degradative initiator transfer; the principal mode of termination, however, was bimolecular.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1989.080270306
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  • 5
    Electronic Resource
    Electronic Resource
    Studies on polymerization of vinyl acetate using ylide as an initiator and degradative transfer agent (1989)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 27 (1989), S. 43-51 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The polymerization of vinyl acetate initiated by β-picolinium-p-chlorophenacylide was carried out at 30, 35, and 40°C, using the conventional dilatometric technique. The initiator and the monomer exponent values were 0.80 ± 0.15 and unity, respectively. The polymerization was inhibited in the presence of hydroquinone, but was favored by nonpolar solvent and polymerization temperature. The energy of activation was 90.3 kJ mol-1. An average value of kp2/kt for the present system was found to be 0.37 × 10-2 L mol-1 s-1. The results are explained in terms of radical mode of polymerization with degradative initiator transfer; the principal mode of termination, however, was biomolecular.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1989.080270104
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  • 6
    Electronic Resource
    Electronic Resource
    Poly(vinyl acetate) as a template for the radical polymerization of acrylonitrile (1989)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 27 (1989), S. 1065-1070 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The template polymerization of acrylonitrile (AN) along with atactic-poly(vinyl acetate) of Mv (47,090), at 60°C for 120 min in dimethyl formamide (DMF) has been studied dilatometrically to study the effects of template, monomer, and initiator (benzoyl peroxide) concentration upon kinetics. Viscometric measurements showed that complexation between at-PVAc and PAN was maximum when template/polymer ratio was 1:1 and time required for complete complexation was 15 min. The overall energy of activation was 57.76 and 77.01 kJ/mol in the presence and absence of, PVAc, respectively. The overall system follows mechanism I, i.e., the monomer molecules get adsorbed on the surface of the template macromolecules and then propagation proceeds.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1989.080270328
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  • 7
    Electronic Resource
    Electronic Resource
    Radical polymerization of styrene initiated by styrene-arsenic sulfide complex (1989)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 27 (1989), S. 3811-3816 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Styrene forms a complex with arsenic sulfide which in DMF at 85°C initiates radical polymerization yielding high molecular weight polymer. The order of reaction, with respect to initiator and monomer, is 0.5 ± 0.02 and unity, respectively. The energy of activation for the system computed as 96 kJ mol-1 and the polymerization is retarded by hydroquinone. A possible mechanism for reaction has also been proposed.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1989.080271121
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  • 8
    Electronic Resource
    Electronic Resource
    Abortions in free ranging Hanuman langurs (Presbytis entellus) — a male induced strategy? (1988)
    Springer
    Human evolution 3 (1988), S. 297-308 
    Details
    ISSN: 1824-310X
    Keywords: Presbytis entellus ; Reproductive strategies ; Abortion ; Infanticide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract During a 10-year long term study, 6 eye-witnessed and 1 pressumed cases of abortions occurred in 3 one-male bisexual troops of free ranging langurs (Presbytis entellus) near Jodhpur, Rajasthan, India. The age of the unborns varied from 35 to about 200 days. The subsequent birth interval ranged between 7.1–21.1 months. 2 miscarriages occurred during stable periods of residency of a single male. 5 cases occurred prior to or after infanticide in connection with male changes. In one case a female was attacked by the new male before she aborted. In one case a female presumably aborted after attacks on her semiweaned infant. Most of the reproductive losses hence seem to be related to psychical and physical stress exerted by new males on pregnant females. As part of their reproductive strategy, males reduce their waiting time to insemination in this way. Abortions may likewise represent an adaptive reproductive strategy of females, who prefer to abort instead of investing in a foetus which is likely to be killed after birth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02435859
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Interpenetrating polymer networks: A review on synthesis and properties (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Polymer International 35 (1994), S. 109-118 
    Details
    ISSN: 0959-8103
    Keywords: Interpenetrating polymer networks ; synthesis ; properties ; mechanism ; structure-property relationship ; 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: A review containing 83 references on the chemistry aspects (mechanism and structure-property relationships) for IPN synthesis is presented.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pi.1994.210350201
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  • 10
    Electronic Resource
    Electronic Resource
    p-acetyl benzylidene triphenylarsonium ylide initiated radical terpolymerization of styrene, acrylonitrile and copper acrylate: synthesis, characterization and properties (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Polymer International 41 (1996), S. 407-412 
    Details
    ISSN: 0959-8103
    Keywords: terpolymerization ; kinetics ; thermal properties ; arsonium ylide ; styrene ; acrylonitrile ; copper acrylate ; 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: Solution terpolymerization of styrene (Sty), acrylonitrile (AN) and copper acrylate (CuA) has been carried out in dimethylformamide at 90°C for 4 h using p-acetyl benzylidene triphenylarsonium ylide as radical initiator. 1H nuclear magnetic resonance (NMR), IR and elemental analysis have been used to characterized the terpolymer. Analysis of kinetic data indicates the following rate equation: $$R_{\rm p} \propto \left[ {{\rm ylide}} \right]^{0.5} \left[ {{\rm Sty}} \right]\left[ {{\rm AN}} \right]{1 \over {\left[ {{\rm CuA}} \right]}}$$ The overall activation energy is 38 kJ mol-1. The composition of terpolymer calculated from NMR and elemental analysis has been used to evaluate reactivity ratios as r1(Sty) = 5 ± 2 and r2(AN + CuA) = 0.4 ± 0.02 employing the Finemann-Ross method, which confirms its random origin. The terpolymer was thermally stable up to 2007deg;C.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
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