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991.
Ishchenko A. N. Tabachenko A. N. Afanas’eva S. A. Belov N. N. Biryukov Yu. A. Burkin V. V. D’yachkovskii A. S. Rogaev K. S. Skosyrskii A. B. Yugov N. T. 《Russian Physics Journal》2018,60(10):1811-1818
Russian Physics Journal - The paper studies physical and mechanical properties of tungsten-nickel-iron-cobalt metal foam alloyed with titanium tungsten carbide. Test specimens are obtained by the... 相似文献
992.
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Paramagnetic DOSY: An Accurate Tool for the Analysis of the Supramolecular Interactions between Lanthanide Complexes and Proteins 下载免费PDF全文
Sandrine Denis‐Quanquin Dr. François Riobé Dr. Marc‐André Delsuc Dr. Olivier Maury Dr. Nicolas Giraud 《Chemistry (Weinheim an der Bergstrasse, Germany)》2016,22(50):18123-18131
Diffusion ordered NMR is implemented to determine accurately the mobility of paramagnetic tris‐dipicolinate lanthanide complexes that are versatile probes of protein structure. It is shown that diffusion coefficient ratios can be measured with an accuracy of 1 % using a standard BPPLED pulse sequence, which allows for observing significant, though weak, variations when different species are interacting with the paramagnetic compound. We demonstrate that this approach is complementary to classical chemical shift titration experiments, and that it can be applied successfully to probe the supramolecular dynamic interactions between lanthanide complexes and small molecules on the one hand, or to determine rapidly their affinity for a targeted protein. 相似文献
996.
Kuan Fang Ren Grard Gouesbet Grad Ghan Denis Lebrun Cafer
zkul Alain Kleitz 《Particle & Particle Systems Characterization》1996,13(2):156-164
Imaging techniques in particle sizing have always been important. Nevertheless, owing to the progress in CCD cameras, these techniques have found new potential which strongly depends on the capability to describe the image formation. Based on a combination of the generalized Lorenz-Mie theory and the diffraction theory, the image characteristics are described, taking into account the beam size, particle location, direction of observation and collecting optics characteristics. In the case of forward detection, a finite coherence is introduced and the results are compared with those obtained by a convolution approach, with the point spread function assumed to be Gaussian. Then some experimental results are displayed which underline the improvement achieved in particle size measurement. 相似文献
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Largely different product distributions were observed on the action of various carboxylic esters with 1,4-di(bromomagnesio)butane and its homologue 1,5-di(bromomagnesio)pentane. The much larger yields of reduction product with the latter are the evidence for the structural geometric requirements for the annelation step. 相似文献
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Christine Letrou Denis Crété Jean-Claude Pernot Abdelali Rabhi Pierre Encrenaz 《International Journal of Infrared and Millimeter Waves》1987,8(4):333-353
Tests of niobium-nitride-based SIS junctions in our experimental receiver at ENS1 have shown the remarkable stability in time and through thermal cycling of these high TC material junctions; they were used to evaluate the real junction temperature in our vacuum cryogenerator. Results of heterodyne mixing experiments are presented at 100 GHz, showing that further progress in fabrication would be necessary. Detection experiments were performed at 460 GHz with encouraging results. 相似文献