نتایج جستجو برای: kabachnik fields reaction

تعداد نتایج: 652996  

2015
Daniel Seidel

Conspectus Redox-neutral methods for the functionalization of amine α-C-H bonds are inherently efficient because they avoid external oxidants and reductants and often do not generate unwanted byproducts. However, most of the current methods for amine α-C-H bond functionalization are oxidative in nature. While the most efficient variants utilize atmospheric oxygen as the terminal oxidant, many s...

Journal: :Physical review. D, Particles and fields 1993
Hochberg Kephart York

Quantum stress-energy tensors of fields renormalized on a Schwarzschild background violate the classical energy conditions near the black hole. Nevertheless, the associated equilibrium thermodynamical entropy ∆S by which such fields augment the usual black hole entropy is found to be positive. More precisely, the derivative of ∆S with respect to radius, at fixed black hole mass, is found to van...

2013
Walter Lochte-Holtgreven

It is shown that under certain conditions the nuclear reaction Li(d, n ) 2 a occurs within the plasma of "exploding" (Li + LiD)-wires. The reaction is not thermo-nuclear but of a hybrid character, i. e. the plasma is not heated to a sufficient temperature but electric fields complete the reaction. By an electrical discharge a (Li + LiD)-wire is heated to temperatures below 200 eV. After the hea...

Journal: :Journal of investigational allergology & clinical immunology 2006
Alonso J C Martínez A Callejo Melgosa Gonzalo M J Fuentes C Martín García

Few reports exist on allergic reactions to ranitidine. We present a case of bronchospastic reaction to ranitidine occurred during a drug challenge test. After administration of a therapeutic dose of ranitidine, the patient showed dyspnea, cough and bronchospasm in all the lung fields. Personal respiratory background was negative for respiratory disease and asthma. On reviewing the literature we...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1982
S G Boxer C E Chidsey M G Roelofs

The quantum yield of triplets formed by ion-pair recombination in quinone-depleted photosynthetic reaction centers is found to depend on their orientation in a magnetic field. This new effect is expected to be a general property of radical pair reactions in the solid state. For 0 < H < 1,000 G, the quantum yield anisotropy is caused by anisotropic electron dipole-electron dipole or nuclear hype...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید