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排序方式: 共有3209条查询结果,搜索用时 15 毫秒
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A series of 5-((1H-1, 2, 4-triazol-1-yl)methyl)-4H-1,2,4-triazole derivatives were prepared and evaluated for their antifungal
activities. Quantitative structure–activity relationship studies were performed on these compounds using physicochemical parameters
as independent parameters and antifungal activity as a dependent parameter, where antifungal activity correlated best (correlation
coefficient r > 0.8) with physicochemical parameters (Hammett’s constants σ
p
, F) and van der Waals volume V
1. Results are interpreted on the basis of multiple regression and cross-validation methodology. Furthermore, the domain of
applicability which indicates the area of reliable predictions is defined.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. Chemical structures of A1–26 and A39; synthetic procedures; synthesis schemes; mps, yields, 1H NMR; elemental analyses of compounds and single crystal X-ray diffraction of compounds. 相似文献
986.
987.
New double Wronskian solutions of the AKNS equation 总被引:2,自引:0,他引:2
Soliton solutions, rational solutions, Matveev solutions, complexitons and interaction solutions of the AKNS equation are derived through a matrix method for constructing double Wronskian entries. The latter three solutions are novel. Moreover, rational solutions of the nonlinear Schrodinger equation are obtained by reduction. 相似文献
988.
Digital radiography (DR) and whole-body fluorescent optical imaging (WFOI) have been widely applied in the field of molecular imaging, with the advantages in tissues and functional imaging. The integration of them contributes to the development and discovery of medicine. We introduce an equipment, performance of which is better than that of another molecular imaging system manufactured by Kodak Corp. It can take real-time small animal imaging in vivo, with lower cost and shorter development cycle on the LabVIEW platform. At last, a paradigm experiment on a nude mouse with green fluorescent protein (GFP) transgenic tumor is given to present a real-time DR-WFOI fusion simultaneous image. 相似文献
989.
Yanrong Song Peng Zhang Xinping Zhang Boxia Yan Yi Zhou Yong Bi Zhigang Zhang 《中国光学快报(英文版)》2008,6(4)
An intracavity frequency-doubled vertical external cavity surface emitting laser (VECSEL) with green light is demonstrated. The fundamental frequency laser cavity consists of a distributed Bragg reflector (DBR) of the gain chip and an external mirror. A 12-mW frequency-doubled output has been reached at 540 nm with a nonlinear crystal LBO when the fundamental frequency output is 44 mW at 1080 nm. The frequency doubling efficiency is about 30%. 相似文献
990.
Busnel O Bi L Dali H Cheguillaume A Chevance S Bondon A Muller S Baudy-Floc'h M 《The Journal of organic chemistry》2005,70(26):10701-10708
[structure: see text] A solid-phase fluorenylmethyloxycarbonyl (Fmoc)-based synthesis strategy is described for "mixed" aza-beta3-peptides as well as a convenient general approach for their required building blocks, the aza-beta3-amino acid residues (aza-beta3-aa). These monomers allow the synthesis of relatively large quantities of pure mixed aza-beta3-peptides. The required Fmoc-substituted aza-beta3-amino acids are accessible by convenient synthesis, and a number of monomers including those containing side chains with functional groups have been synthesized. The method was applied toward the solid-phase synthesis of aza-beta3-peptide mimetics of a biologically active histone H4 sequence. 相似文献