Results 111 to 120 of about 15,336 (235)
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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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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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
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Dicarboxylic acid anhydride condensation with compounds containing active methylene groups. 4: Some 4-nitrophthalic anhydride condensation reactions [PDF]
By 4-nitrophthalic anhydride condensation with acetoacetate in acetic anhydride and triethylamine solution with subsequent breakdown of the intermediate condensation product, 5-nitroindanedione-1,3 was obtained.
Oskaja, V., Rotberg, J.
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Polyimide molding powder, coating, adhesive, and matrix resin [PDF]
, 1992 The invention is a polyimide prepared from 3,4'-oxydianiline (3,4'-ODA) and 4,4'-oxydiphthalic anhydride (ODPA), in 2-methoxyethyl ether (diglyme). The polymer was prepared in ultra high molecular weight and in a controlled molecular weight form which ...
Progar, Donald J., St.clair, Terry L.
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Characterization of Actinobacteria Degrading and Tolerating Organic Pollutants [PDF]
, 2007 Species of the genera Rhodococcus, Gordonia and Mycobacterium are known as degraders of recalcitrant pollutants. These bacteria are good survivors in harsh environments.
Tsitko, Irina
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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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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
core
LARC-IA: A flexible backbone polyimide [PDF]
A new linear, aromatic, thermoplastic polyimide, prepared from oxydiphthalic anhydride (ODPA) and 3,4'-oxydianiline (ODA) in diglyme and identified as LARC-IA, was synthesized and evaluated.
Progar, Donald J., Stclair, Terry L.
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Component Analysis of Two Zingiberaceae Characteristic Spice Plants Based on Metabolomics
Shipin gongye ke-jiIn order to comprehensively analyze the chemical composition characteristics of Zingiber neotruncatum and Amomum coriandriodorum, their primary edible parts were subjected to extensive targeted metabolomic profiling using ultra-performance liquid ...
Jinwei LI +5 more
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