Results 81 to 90 of about 5,136,187 (237)
MoleculesSecondary metabolites, bioactive compounds produced by living organisms, can unveil symbiotic relationships in nature. In this study, soilborne entomopathogenic nematodes associated with symbiotic bacteria (Xenorhabdus stockiae and Photorhabdus ...
Gobinath Chandrakasan +5 more
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Tough soluble aromatic thermoplastic copolyimides [PDF]
, 2000 Tough, soluble, aromatic, thermoplastic copolyimides were prepared by reacting 4,4'-oxydiphthalic anhydride, 3,4,3',4'-biphenyltetracarboxylic dianhydride and 3,4'-oxydianiline.
Bryant, Robert G.
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Vinyl capped addition polyimides [PDF]
Polyimide resins (PMR) are generally useful where high strength and temperature capabilities are required (at temperatures up to about 700 F). Polyimide resins are particularly useful in applications such as jet engine compressor components, for example,
Delvigs, Peter +2 more
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Tackifier for addition polyimides [PDF]
A modification to the addition polyimide, LaRC-160, was prepared to improve tack and drape and increase prepeg out-time. The essentially solventless, high viscosity laminating resin is synthesized from low cost liquid monomers. The modified version takes
Butler, J. M., St.clair, T. L.
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Novel method of preparation of blue crude copper phthalocyanine having the reddish shade [PDF]
, 2012 Copper phthalocyanine (CuPc) is one of the most stable pigments towards light, temperature and chemicals. CuPc is prepared by reacting copper chloride, urea, phthalic anhydride and catalyst with high boiling solvent. The objective of this novel method is
Nor Ain Syuhada, Zuhaimi
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Journal of the Brazilian Chemical Society, 1998 The study of model compounds is necessary in order to obtain information about complex organic substances as in the case of humic substances (HS). These substances are potential organic fertilizers and have other important functions in soils, natural ...
Mercê Ana Lucia Ramalho +4 more
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Hierarchical Structure with Highly Ordered Macroporous-Mesoporous Metal-Organic Frameworks as Dual Function for CO2 Fixation. [PDF]
, 2019 As a major greenhouse gas, the continuous increase of carbon dioxide (CO2) in the atmosphere has caused serious environmental problems, although CO2 is also an abundant, inexpensive, and nontoxic carbon source.
Chu, Junmei +8 more
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Journal of the Brazilian Chemical Society, 2006 In this work electrochemical and Ultraviolet-Visible studies were performed in solutions of salicylic acid models of humic and nitrohumic acids, a laboratory artifact, and molybdenum in order to determine the affinity of these models towards the metal ...
Mercê Ana Lucia R. +3 more
doaj
Development of an impact- and solvent-resistant thermoplastic composite matrix [PDF]
Synthesis, moldability and chloroform, acetone and tricresyl phosphate resistance of 16 polymer compositions are described. These aliphatic heterocyclic polymers include polyimides, polybenzimidazoles, and N-arylenepolybenzimidazoles.
Delano, C. B., Kiskiras, C. J.
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The Tagish Lake chondrite and the interstellar parent body hypothesis [PDF]
, 2001 Investigation of the solvent extractable organic compounds in Tagish Lake. The results are used to test the interstellar parent body hypthesis for the origin of extraterrestrial organic ...
Gilmour, I. +2 more
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