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991.
Mustafa Sertçelik Füreya Elif Özbek Parham Taslimi Murat Durman Mücahit Özdemir Bahattin Yalçın Hacali Necefoğlu Tuncer Hökelek 《应用有机金属化学》2020,34(9):e5802
A novel Ni(II) complex containing 2-fluorobenzoate and 3-hydroxypyridine ligands was synthesized and characterized using elemental analysis, Fourier transform infrared (FT-IR) spectroscopy and single-crystal X-ray diffraction. FT-IR peaks show that the carboxylate group from 2-fluorobenzoate has a monodentate coordination mode. The coordination environment around the Ni2+ ion is of distorted octahedral geometry. The octahedral geometry consists of a total of four oxygen atoms from two carboxylate groups of two fluorobenzoate anions, two water molecules and two nitrogen atoms from two 3-hydroxypyridine ligands. The complex shows excellent inhibitory effects against some metabolic enzymes. Ki values for the complex were found as 108.17 ± 25.63, 124.88 ± 36.20, 28.11 ± 2.87, 20.95 ± 5.65 and 32.63 ± 9.67 μM against human carbonic anhydrase I, human carbonic anhydrase II, α-glycosidase, acetylcholinesterase and butyrylcholinesterase, respectively. In addition, geometry optimization and vibration frequencies were calculated, and single point energy was studied based on optimization. Experimental and theoretical data were compared. The B3LYP/6-31G(d,p) basis set was used for all calculations. 相似文献
992.
993.
Ian Herbert Sanjay Jain Steffen Lempp Manat Mustafa Frank Stephan 《Annals of Pure and Applied Logic》2019,170(12):102716
This paper considers reductions between types of numberings; these reductions preserve the Rogers Semilattice of the numberings reduced and also preserve the number of minimal and positive degrees in their semilattice. It is shown how to use these reductions to simplify some constructions of specific semilattices. Furthermore, it is shown that for the basic types of numberings, one can reduce the left-r.e. numberings to the r.e. numberings and the k-r.e. numberings to the -r.e. numberings; all further reductions are obtained by concatenating these reductions. 相似文献
994.
The electric counterpart of the magnetic black hole solution found in nonlinear electrodynamics (NED) is presented. The electric field emerges regular and confined whereas the spacetime which satisfies all the energy conditions is singular. Our result is in conformation with a theorem proved before about the existence of regular electric black holes. The thermal properties of the black hole including the first law, Smarr's formula, and the thermal stability are investigated. This provides a chance to compare the electric and magnetic types of black holes in a particular model of NED. 相似文献
995.
996.
Mustafa Çağlayan Alessandra Lucini Paioni Dr. Edy Abou-Hamad Genrikh Shterk Alexey Pustovarenko Prof. Dr. Marc Baldus Dr. Abhishek Dutta Chowdhury Prof. Dr. Jorge Gascon 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2020,132(38):16884-16889
Methane dehydroaromatization (MDA) is among the most challenging processes in catalysis science owing to the inherent harsh reaction conditions and fast catalyst deactivation. To improve this process, understanding the mechanism of the initial C−C bond formation is essential. However, consensus about the actual reaction mechanism is still to be achieved. In this work, using advanced magic-angle spinning (MAS) solid-state NMR spectroscopy, we study in detail the early stages of the reaction over a well-dispersed Mo/H-ZSM-5 catalyst. Simultaneous detection of acetylene (i.e., presumably the direct C−C bond-forming product from methane), methylidene, allenes, acetal, and surface-formate species, along with the typical olefinic/aromatic species, allow us to conclude the existence of at least two independent C−H activation pathways. Moreover, this study emphasizes the significance of mobility-dependent host–guest chemistry between an inorganic zeolite and its trapped organic species during heterogeneous catalysis. 相似文献
997.
Journal of Thermal Analysis and Calorimetry - This research concentrates on the von Kármán flow of viscoelastic fluid obeying second grade model over a heated permeable disk. Our interest... 相似文献
998.
Siberian Mathematical Journal - We develop the Ershov theory of C-classes for some finite families of sets in the Ershov hierarchy. We generalize the result by Muchnik on multiple $ m $... 相似文献
999.
Crystallography Reports - ZnO–TiO2 heterojunction photoanodes consisting of nanoparticles, nanorods, nanopropellers, and nanohedgehogs for dye-sensitized solar cell were first synthesized by... 相似文献
1000.