نتایج جستجو برای: polyether diester

تعداد نتایج: 7434  

Journal: :The Journal of prosthetic dentistry 1984
L Fattore W F Malone J L Sandrik B Mazur T Hart

The importance of accurate, reliable recording mediums cannot be understated. Function and esthetics are directly related to this critical step. Dental recording materials must be accurate, easily manipulated, and economical for effective use. Five types of intraoral records of 31 patients were registered and placed on an arcon, semiadjustable articulator to measure the magnitude and direction ...

2017
Min Liu Yan Cao Diya Lv Wen Zhang Zhenyu Zhu Hai Zhang Yifeng Chai

According to the Chinese Pharmacopoeia 2015, only processed Aconitum tubers can be clinically applied, and the effect of processing is unclear. This research aimed to explore the effect of processing on cardiac efficacy of alkaloids in Aconitum tubers. First, the chemical ingredients in unprocessed and processed Aconitum tubers were identified and compared by using high performance liquid chrom...

Journal: :The Journal of biological chemistry 1980
A Varki S Kornfeld

Phosphomannosyl residues on acid hydrolases serve as recognition markers which target these enzymes to lysosomes. We have found that the oligosaccharide units of newly synthesized beta-glucuronidase contain phosphate residues in diester linkage between mannose and alpha-linked N-acetylglucosamine residues (Tabas, I., and Kornfeld, S. (1980) J. Biol. Chem. 255, 6633--6639). To obtain larger amou...

Journal: :Advanced Synthesis & Catalysis 2021

Enantioselective iodocycloetherifications can be conducted using sterically highly demanding BINOL-based phosphoric acid diesters as catalyst. To achieve enantioselective reactions, cocatalysis by triphenylphosphine selenide is necessary. With cocatalysis, good to excellent enantioselectivities achieved for a broad range of substrates catalyst and cocatalyst loadings low 1 mol %. The itself doe...

2012
Yoonseuk Choi Tae-Hoon Yoon Jin Hyuk Kwon Jonghoon Yi Jin Seog Gwag

We investigate the pretilt characteristics of a nematic liquid crystal [LC] in terms of ion beam exposure conditions on the homeotropic polyimide alignment layer. The pretilt angle of LCs in the case of high-energy ion beam treatment was decreased considerably almost the same to that of the homogenous alignment layer though we used homeotropic polyimide film at first. Increasing irradiating ene...

Journal: :Journal of experimental zoology. Part A, Ecological genetics and physiology 2007
Jeroen Reneerkens Theunis Piersma Jaap S Sinninghe Damsté

Birds living in seasonal environments change physiology and behavior in correspondence to temporally changing environmental supplies, demands and opportunities. We recently reported that the chemical composition of uropygial gland secretions of sandpipers (Scolopacidae, order Charadriformes) changes during the breeding season from mixtures of monoesters to diesters, which fulfill specific funct...

Journal: :Nucleic acids research 1995
A S Karim C S Johansson J K Weltman

The purpose of this study was to determine whether the gamma-S of nucleoside thiotriphosphates and the non-bridging sulfur of internucleotide phosphorothioate diesters possess sufficient thiol character to form adducts with maleimides. Adenosine triphosphate gamma-S (ATPS) and thymidyl-PS-thymidine (TPST) were each reacted with the reporter molecule N-1 pyrene maleimide (PM) and the fluorescenc...

2017
Jill J. Leckey Megan L. Ross Marc Quod John A. Hawley Louise M. Burke

We investigated the effect of pre- "race" ingestion of a 1,3-butanediol acetoacetate diester on blood ketone concentration, substrate metabolism and performance of a cycling time trial (TT) in professional cyclists. In a randomized cross-over design, 10 elite male cyclists completed a ~31 km laboratory-based TT on a cycling ergometer programmed to simulate the 2017 World Road Cycling Championsh...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1985
J G Ebeling G R Vandenbark L J Kuhn B R Ganong R M Bell J E Niedel

Activation of cellular protein kinase C appears to be involved in the mechanism by which phorbol diesters induce differentiation of human myeloid leukemia cells (HL-60). Protein kinase C is thought to be physiologically activated by diacylglycerol derived from receptor-mediated phosphatidylinositol hydrolysis. sn-1,2-diacylglycerols with short saturated acyl side chains (C4-C10) were synthesize...

Journal: :Brazilian oral research 2010
Jefferson Ricardo Pereira Karina Yumi Murata Accácio Lins do Valle Janaina Salomon Ghizoni Fábio Kenji Shiratori

Dental impression is an important step in the preparation of prostheses since it provides the reproduction of anatomic and surface details of teeth and adjacent structures. The objective of this study was to evaluate the linear dimensional alterations in gypsum dies obtained with different elastomeric materials, using a resin coping impression technique with individual shells. A master cast mad...

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