排序方式: 共有81条查询结果,搜索用时 15 毫秒
41.
Tikhov S. V. Gorshkov O. N. Belov A. I. Antonov I. N. Morozov A. I. Koryazhkina M. N. Mikhaylov A. N. 《Technical Physics》2019,64(6):873-880
Technical Physics - The peculiarities of resistive switching in capacitors with yttria-stabilized hafnia layers were studied. The characteristics of current transport in the initial state and after... 相似文献
42.
A. G. Medvedev A. A. Mikhaylov T. A. Tripol´skaya P. V. Prikhodchenko 《Russian Chemical Bulletin》2018,67(7):1131-1141
The review addresses synthetic approaches to composite materials based on graphene oxide and nano tin dioxide and their electrochemical properties as anodes for lithium- and sodiumion batteries. The introduction of a carbon matrix into the composite material improves the electrochemical characteristics of the anodes. In most methods, the synthesis of graphene oxide–tin dioxide composites is based on the use of tin(II,IV) chlorides as the starting compounds, and the most efficient electrode materials were obtained by the hydrothermal or solvothermal routes. Thermal processing is much more economic than the gas phase deposition protocols but requires heating of a large volume of dilute tin oxide dispersions in an autoclave. Mechanochemistry (ball milling) is also economically unfavorable for the synthesis of composite materials. In addition, large volumes of acidic wastes that should be neutralized and safely discarded are formed when tin chlorides are used. An alternative environmentally friendly technique based on the use of aqueous peroxide solutions can be applied for the production of efficient anode materials based on graphene oxide and tin dioxide. This process does not involve acidic wastes, uses hydrogen peroxide and ethanol as reagents, and accomplishes film deposition (coating) at room temperature. Final thermal treatment is required only for the active material, which minimizes energy expenses and equipment costs. 相似文献
43.
Back Cover: A Planar‐Chiral Rhodium(III) Catalyst with a Sterically Demanding Cyclopentadienyl Ligand and Its Application in the Enantioselective Synthesis of Dihydroisoquinolones (Angew. Chem. Int. Ed. 26/2018) 下载免费PDF全文
44.
Back Cover: Peroxide Coordination of Tellurium in Aqueous Solutions (Chem. Eur. J. 9/2016) 下载免费PDF全文
45.
A. V. Philippov V. A. Monchinsky V. A. Mikhaylov A. B. Kuznetsov 《Physics of Particles and Nuclei Letters》2010,7(7):568-571
This paper presents the results of a calculation of 197Au32+ ion beam losses as they interact with atoms and molecules of residual gas in the acceleration chamber of the booster vacuum
system of the NICA accelerator complex [1]. 相似文献
46.
D. I. Tetelbaum S. A. Trushin A. N. Mikhaylov V. K. Vasil'ev G. A. Kachurin S. G. Yanovskaya D. M. Gaponova 《Physica E: Low-dimensional Systems and Nanostructures》2003,16(3-4):410
The influence of P ion doping on the photoluminescence (PL) of the system of nanocrystals in SiO2 matrix (SiO2:Si) both without annealing and after annealing at various temperatures (provided before and after additional P implantation) is investigated. The Si and P implantation was carried out with ion energies of 150 keV and doses ΦSi=1017 cm−2 and ΦP=(0.1–300)×1014 cm−2 (current density j3 μAcm−2). The system after Si implantation was formed at 1000°C and 1100°C (2 h). For the case of SiO2:Si system as-implanted by P, the intensity of PL was drastically quenched, but partially retained. As for the step-by-step annealing (at progressively increased temperatures) carried out after P implantation, the sign and degree of doping effect change with annealing temperature. The possible mechanisms of these features are discussed. 相似文献
47.
Logvinenko V. Minina A. Mikhaylov Yu. Yukhin Yu. Bokhonov B. 《Journal of Thermal Analysis and Calorimetry》2003,74(2):407-411
Two bismuth salts, Bi6O4(OH)4(C17H35COO)6 and Bi6O4(OH)4(C17H35COO)6·nC17H35COOH, were synthesized. The thermogravimetry under quasi-isothermal conditions denotes the multi-step character of decomposition
processes for both compounds. The thermogravimetry under linear heating was used for kinetic studies. Thermogravimetric data
(obtained at different rates of linear heating) were processed with 'Netzsch Thermokinetics' computer program. Kinetic parameters
were calculated only for the first decomposition step for both salts, the process is described by different nucleation equations
(with and without autocatalysis).
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
48.
Ciszewski JT Mikhaylov DY Holin KV Kadirov MK Budnikova YH Sinyashin O Vicic DA 《Inorganic chemistry》2011,50(17):8630-8635
A synthesis has been developed that allows the isolation of four-coordinate [(tpy)Ni-Br] (1, tpy = terpyridine) in high yield. Complex 1 has been structurally characterized, and the X-ray data reveal a square-planar geometry, unlike the known [(tpy')Ni-I] (tpy' = 4,4',4'-tri-tert-butyl-terpyridine) but similar to [(tpy)Ni-CH(3)]. In the solid-state, EPR spectroscopy indicates, however, that unlike [(tpy)Ni-CH(3)], the electronic structure of 1 is a metal-centered, not a ligand-centered radical. Density functional theory (DFT) analyses support this assignment. The preparation of 1 also facilitated the analysis of the redox potentials of a series of terpyridine nickel derivatives. It was found that the overall ligand sphere (one vs two coordinated terpyridine ligands) plays more of a role in determining the redox potentials of these derivatives than do the formal oxidation states of the nickel ions in the solution phase. 相似文献
49.
V. V. Altsybeyev O. S. Kozlov V. A. Kozynchenko V. A. Mikhaylov D. A. Ovsyannikov A. O. Sidorin A. V. Tuzikov G. V. Trubnikov 《Physics of Particles and Nuclei Letters》2018,15(7):798-801
The paper considers software for the simulation and analysis of transverse dynamics of charged particle beams in synchrotrons and beam lines. It calculates the transverse beam dynamics in synchrotrons and beam lines based on the linear model, the structural functions of synchrotrons and beam lines, the beam acceptance and emittance, and the orbit correction. The software is capable of calculating the orbit-correction quality distributions and reconstructing the transport matrix parameters from the response matrices. 相似文献
50.
Shamshurin M. V. Abramov P. A. Mikhaylov M. A. Sokolov M. N. 《Journal of Structural Chemistry》2022,63(1):81-86
Journal of Structural Chemistry - Extracting the reaction product of Ta, Br2, and LiBr (720 °C, 48 h, mole ratio 1.5:1.75:1.0) with diglyme yields crystals of complex... 相似文献