Results 271 to 280 of about 591,712 (298)
Some of the next articles are maybe not open access.
Angewandte Chemie, 2000
While nonracemic catalysts can generate nonracemic products with or without the nonlinear relationship in enantiomeric excesses between catalysts and products, racemic catalysts inherently give only a racemic mixture of chiral products. Asymmetric catalysts, either in nonracemic or racemic form, can be further evolved into highly activated catalysts ...
K. Mikami +5 more
openaire +2 more sources
While nonracemic catalysts can generate nonracemic products with or without the nonlinear relationship in enantiomeric excesses between catalysts and products, racemic catalysts inherently give only a racemic mixture of chiral products. Asymmetric catalysts, either in nonracemic or racemic form, can be further evolved into highly activated catalysts ...
K. Mikami +5 more
openaire +2 more sources
2013
Rhodium is currently the metal of choice to achieve high enantioselectivities in the hydroformylation of a relatively wide variety of alkene substrates. The elucidation of the different steps of the catalytic cycle and the characterization of the resting state, together with the discovery of several types of ligands that are able to provide high ...
Bernabé F, Perandones +2 more
openaire +2 more sources
Rhodium is currently the metal of choice to achieve high enantioselectivities in the hydroformylation of a relatively wide variety of alkene substrates. The elucidation of the different steps of the catalytic cycle and the characterization of the resting state, together with the discovery of several types of ligands that are able to provide high ...
Bernabé F, Perandones +2 more
openaire +2 more sources
Review of Economic Studies, 2000
The paper deals with asymmetric auctions. ``Asymmetries are often important in contract bidding. Each potential contractor has essentially the same information about the nature of the project but a different opportunity cost of completing it. Whenever some aspect of these differences is common knowledge, beliefs are asymmetric. In major art auctions as
Maskin, Eric, Riley, John
openaire +1 more source
The paper deals with asymmetric auctions. ``Asymmetries are often important in contract bidding. Each potential contractor has essentially the same information about the nature of the project but a different opportunity cost of completing it. Whenever some aspect of these differences is common knowledge, beliefs are asymmetric. In major art auctions as
Maskin, Eric, Riley, John
openaire +1 more source
Physical Review E, 2005
The asymmetric diffusion through conical nanopores is described by the diffusional model. Diffusion is several times faster; when the concentration gradient points from the wide towards the narrow opening of the cone than in the opposite direction. The asymmetric diffusion appears either when the diffusion coefficient depends on the concentration or ...
I D, Kosińska, A, Fuliński
openaire +2 more sources
The asymmetric diffusion through conical nanopores is described by the diffusional model. Diffusion is several times faster; when the concentration gradient points from the wide towards the narrow opening of the cone than in the opposite direction. The asymmetric diffusion appears either when the diffusion coefficient depends on the concentration or ...
I D, Kosińska, A, Fuliński
openaire +2 more sources
CATALYTIC ASYMMETRIC HYDROGENATION*
Annals of the New York Academy of Sciences, 1972An efficient direct route to optically active α-amino acids has been achieved by a catalytic asymmetric reduction of α-acylaminoacrylic acids.
W S, Knowles +2 more
openaire +2 more sources
Asymmetric Organocatalytic Monofluorovinylations
Journal of the American Chemical Society, 2011The development of highly enantio- and diastereoselective organocatalytic monofluorovinylations is presented. Based on the application of α-fluoro-β-keto-benzothiazolesulfones, the formal addition of a monofluorovinylic anion synthon to a range of acyclic and cyclic enones, as well as imines, is shown.
Jacobsen, Christian Borch +5 more
openaire +2 more sources
American Journal of Physical Anthropology, 2002
AbstractThe objective of this study was to examine examples of spondylolysis in which the pattern of separation was clearly asymmetrical, in order to learn more about the process of bone separation that produces this condition. Although the primary focus was on unilateral complete separation, examples of asymmetry represented by incomplete separation ...
openaire +2 more sources
AbstractThe objective of this study was to examine examples of spondylolysis in which the pattern of separation was clearly asymmetrical, in order to learn more about the process of bone separation that produces this condition. Although the primary focus was on unilateral complete separation, examples of asymmetry represented by incomplete separation ...
openaire +2 more sources
Asymmetric Cell Divisions and Asymmetric Cell Fates
Annual Review of Cell and Developmental Biology, 2009The regulation of self-renewal, cell diversity, and differentiation can occur by modulating symmetric and asymmetric cell divisions. Remarkably, asymmetric cell divisions can arise through multiple processes in which molecules in the cytoplasm and nucleus, as well as template “immortal” DNA strands, can segregate to one daughter cell during cell ...
Shahragim, Tajbakhsh +2 more
openaire +2 more sources
Journal of Economic Theory, 2000
The paper deals with the \(n\)-bidder single-object English, or open ascending price, auctions in a setting with interdependent values and asymmetric bidders. The main purpose is to obtain conditions ensuring the existence of an efficient ex post equilibrium in which for every realization of the signals the object is obtained by the bidder with the ...
openaire +2 more sources
The paper deals with the \(n\)-bidder single-object English, or open ascending price, auctions in a setting with interdependent values and asymmetric bidders. The main purpose is to obtain conditions ensuring the existence of an efficient ex post equilibrium in which for every realization of the signals the object is obtained by the bidder with the ...
openaire +2 more sources
Asymmetric Research on Asymmetric Wars
International Studies Review, 2015Great Powers, Small Wars: Asymmetric Conflict Since 1945. By Deriglazova Larisa. Baltimore, MD: Johns Hopkins University Press, 2014. 408 pp., $60 hardcover (ISBN 978-1-421-41412-6). The share of international relations (IR) studies that focus on asymmetric relations does not match the share of international interactions that are asymmetric.
openaire +1 more source