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91.
92.
A fast and efficient method has been developed for generation of sulfonyl nitrene from N,N-dibromo-p-toluenesulfonamide (TsNBr(2)) in the presence of a base without any catalyst. This method was applied to produce aziridines from different kinds of olefins within a short time in high yields. 相似文献
93.
The split feasibility problem is to find a point x? with the property that x?∈ C and Ax?∈ Q, where C and Q are nonempty closed convex subsets of real Hilbert spaces X and Y, respectively, and A is a bounded linear operator from X to Y. The split feasibility problem models inverse problems arising from phase retrieval problems and the intensity-modulated radiation therapy. In this paper, we introduce a new inertial relaxed CQ algorithm for solving the split feasibility problem in real Hilbert spaces and establish weak convergence of the proposed CQ algorithm under certain mild conditions. Our result is a significant improvement of the recent results related to the split feasibility problem.
相似文献94.
Yogesh Vaishnav Dhansay Dewangan Shekhar Verma Achal Mishra Alok Singh Thakur Pranita Kashyap Santosh Kumar Verma 《Journal of heterocyclic chemistry》2020,57(5):2213-2224
The PPAR-γ agonist enhances the insulin sensitivity and avoids the disorganized hyperglycemic by promoting the insulin guided cellular uptake of blood glucose. Therefore, in the present work PPAR-γ has chosen as the target for the molecular docking study to design an effective agonist of the same. By this research work an effort has been made to prepare amide and urea series of 1, 3, 4-thiadiazole derivatives as 4-substituted-N-(5-(4-(1-piperidino)1-piperidinyl)-1,3,4-(2-thiadiazolyl)benzamide (4a-f) and 1-(4-substitutedphenyl)-3-(5-(4-(1-piperidino)1-piperidinyl)-1,3,4-(2-thiadiazolyl)urea (6a-f) . Both the docking score as well as the pharmacological animal study data has been suggested that the electron donating group containing compound 4f and 6f are most potent molecules for the antidiabetic activity close to the standard drug pioglitazone. It was further observed that the unsubstituted aromatic ring containing derivatives have also considerable effect (4a and 6a) than the electron withdrawing containing derivatives. After the comparison of biological data for amide and urea series, it was concluded that the urea (6a-f) series is more effective than the amide series. 相似文献
95.
N. M. Kleinerman V. V. Serikov N. I. Vlasova A. G. Popov A. Kashyap 《Bulletin of the Russian Academy of Sciences: Physics》2017,81(7):822-826
The Mössbauer effect is used to study changes in the structure of Fe50Pd50 alloy in the course of annealing for ordering at T = 450°C from different initial states: cast and quenched from 950°C, then subjected to severe plastic deformation by shear under pressure, and that obtained by fast quenching from the melt. Differences in the kinetics of phase transformations are observed depending on the initial state of the material. 相似文献
96.
Subhash C. Kashyap K. Gopinadhan D.K. Pandya Sujeet Chaudhary 《Journal of magnetism and magnetic materials》2009,321(8):957-962
Room-temperature ferromagnetism has been observed in Co- or Mn-doped SnO2 and Co- and F-co-doped SnO2 thin films. A maximum magnetic moment of 0.80μB/Co ion has been observed for Sn0.90Co0.10O1.925−δF0.075 thin films, whereas in the case of Sn1−xMnxO2−δ it was 0.18μB/Mn ion for x=0.10. The magnetization of both Sn1−xCoxO2−δ and Sn1−xCoxO2−y−δFy thin films depends on the free carrier concentration. An anomalous Hall effect has been observed in the case of Co-doped SnO2 films. However, the same was not observed in the case of Mn-doped SnO2 thin films. Carrier-mediated interaction is convincingly proved to be the cause of ferromagnetism in the case of Co:SnO2. It is, however, proposed that no carrier-mediated interaction exists in the case of Mn:SnO2. Present studies indicate that dopants and hence electronic cloud-lattice interaction plays an important role in inducing ferromagnetism. 相似文献
97.
A theoretical model of a novel planar integrated refractive index sensor based on surface plasmon-polariton (SPP) excitation with a corrugated metal long period grating (LPG) is presented and comprehensively investigated. The main principle of the operation this device is based on co-directional energy transfer by means of a corrugated metal LPG between a p-polarized guided mode propagating in a waveguide layer and the SPP propagating a metal layer separated from the waveguide layer by a buffer. The corrugated LPG is engraved in the metal layer in contact with the sensed medium. The power transmitted through the LPG in the guided mode serves as an input signal for an interrogation unit. This device is free from any moving parts and can be simply integrated into any planar waveguide system. Our sensor simulations are based on the local-normal-mode transfer matrix method and performed in telecom wavelength range. 相似文献
98.
99.
A theoretical model of a new integrated planar surface plasmon-polariton (SPP) refractive index sensor is presented and comprehensively investigated. The main principle of operation of this device is based on high efficiency energy transfer between a p-polarized guided mode propagating in a waveguide layer of the structure and the SPP propagating in the opposite direction in a metal layer separated from the waveguide layer by a dielectric buffer. The high efficiency energy transfer is realised by means of a properly designed Bragg grating imprinted in the waveguide layer. This device is compact, free from any moving parts and can easily be integrated into any planar scheme. Our simulations for the sensor operating at the well developed and commercialised telecom wavelengths are based on coupled mode theory. 相似文献
100.
Kalita Amlan Jyoti Sahu Prem Prakash Borah Ritam Raj Rohman Shahnaz Sultana Kashyap Chayanika Ullah Sabnam Swabaka Baruah Indrani Mazumder Lakhya Jyoti Konwar Dimpul Guha Ankur Kanti 《Structural chemistry》2021,32(6):2313-2318
Structural Chemistry - Sandwich complexes find their interests among the chemists after the breakthrough discovery of ferrocene. Since then, a number of sandwich and half-sandwich complexes were... 相似文献