Results 91 to 100 of about 36,653 (344)

THE STEREOCHEMISTRY AND CONFORMATION OF LIGNIN AS JUDGED BY X-RAY CRYSTALLOGRAPHIC INVESTIGATIONS OF LIGNIN MODEL COMPOUNDS: ARYLGLYCEROL BETA-GUAIACYL ETHERS

BioResources, 2007
The conformations of a variety of crystalline lignin models representing different diastereomeric forms of structural elements in lignin of the arylglycerol -guaiacyl ether type have been studied using X-ray crystallography.
Jim Parkås, Knut Lundquist, Vratislav Langer   +2 more
doaj  

Scientific Opinion on Flavouring Group Evaluation 67, Revision 1 (FGE.67Rev.1): Consideration of 40 furan‐substituted aliphatic hydrocarbons, alcohols, aldehydes, ketones, carboxylic acids and related esters, sulfides, disulfides and ethers evaluated by JECFA at the 65th meeting (JECFA, 2006b) and re‐evaluated at the 69th meeting (JECFA, 2009c)

EFSA Journal, 2011
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to consider evaluations of flavouring substances assessed since 2000 by the Joint FAO/WHO Expert Committee on Food Additives
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj   +1 more source

As nove premissas anestesiológicas da Bíblia Las nueve premisas anestesiológicas de la Biblia Nine Biblical anesthetic premises

Revista Brasileira de Anestesiologia, 2003
JUSTIFICATIVA E OBJETIVOS: Os autores fazem uma análise histórica de nove premissas inerentes à prática anestésica que já estão referenciadas na Bíblia há mais de 3.000 anos (Velho Testamento).
Nilton Bezerra do Vale, José Delfino
doaj   +1 more source

Warum sind Enzyme Makromoleküle?

CHIMIA, 1983
The paper is devoted to the question wheter the macromolecular structure is really essential for the chemical and biological qualities of enzymes. Recognizing that high molecular weight compounds are relevant both in nature and in modern technology, the
P.L. Luisi
doaj   +1 more source

Über stereoisomere Chlorimido‐Ketone [PDF]

Berichte der deutschen chemischen Gesellschaft, 1910
n ...
Stieglitz, Julius, Peterson, P. P.
openaire   +2 more sources

Dendral-64 - a system for computer construction, enumeration and notation of organic molecules as tree structures and cyclic graphs. part i- notational algorithm for tree structures [PDF]

Computer construction, enumeration, and notation of organic molecules as tree structures and cyclic ...
Lederberg, J.
core   +1 more source

Side-by-side comparison of recombinant human glutathione peroxidases identifies overlapping substrate specificities for soluble hydroperoxides

Redox Biology, 2023
Five out of eight human glutathione peroxidases (GPXs) are selenoproteins, representing proteins that contain selenium as part of the amino acid selenocysteine. The GPXs are important for reducing hydroperoxides in a glutathione-consuming manner and thus
Maria Schwarz, Alina Löser, Qing Cheng, Mareike Wichmann-Costaganna, Patrick Schädel, Oliver Werz, Elias SJ. Arnér, Anna P. Kipp   +7 more
doaj  

Tunable Endo/Exo Selectivity in Direct Catalytic Asymmetric 1,3‐Dipolar Cycloadditions with Polyfunctional Lewis Acid / Azolium‐Aryloxide Catalysts

Angewandte Chemie International Edition, Accepted Article.
Catalytic asymmetric 1,3‐dipolar cycloadditions (1,3‐DCA) using iminoesters as ylide precursors offer a powerful approach to accessing stereochemically complex, biologically relevant pyrrolidines. While previous studies have already achieved impressive stereoselectivities, catalytic productivity remains a challenge, with turnover numbers (TON ...
Adrian Bürstner, Patrick Becker, Alexander Allgaier, Lucca Pfitzer, Daniel Wanner, Johanna Dollinger, Felix Willig, Justin Herrmann, Vukoslava Miskov-Pajic, Andreas Hans, Wolfgang Frey, Joris van Slageren, Johannes Kästner, René Peters   +13 more
wiley   +1 more source

Ueber stereoisomere Chlorbrombernsteinsäuren. I [PDF]

Berichte der deutschen chemischen Gesellschaft, 1897
n ...
openaire   +2 more sources

Influence of chain topology (cyclic versus linear) on the nucleation and isothermal crystallization of poly(L-lactide) and poly(D-lactide) [PDF]

, 2018
In this paper, ring closure click chemistry methods have been used to produce cyclic c-PLLA and c-PDLA of a number average molecular weight close to 10 kg/mol.
Arbe Méndez, María Aranzazu, Coulembier, Olivier, De Winter, Julien, Iturrospe Ibarra, Amaia, Josse, Thomas, Liénard, Romain, Mugica Iztueta, Miren Agurtzane, Müller Sánchez, Alejandro Jesús, Zaldua Carazo, Nerea, Zubitur Soroa, María Manuela   +9 more
core   +2 more sources