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121.
Grinberg V. A. Emets V. V. Maiorova N. A. Maslov D. A. Averin A. A. Polyakov S. N. Molchanov S. P. Levin I. S. Tsodikov M. V. 《Protection of Metals and Physical Chemistry of Surfaces》2019,55(1):55-64
Protection of Metals and Physical Chemistry of Surfaces - A method for the preparation of film coatings of titania doped with bismuth (Bi3+) and lead (Pb2+) ions, separately and simultaneously, has... 相似文献
122.
Grinberg V. A. Emets V. V. Mayorova N. A. Maslov D. A. Averin A. A. Polyakov S. N. Levin I. S. Tsodikov M. V. 《Protection of Metals and Physical Chemistry of Surfaces》2019,55(4):637-645
Protection of Metals and Physical Chemistry of Surfaces - A method of formation of film coatings of titanium dioxide doped by bismuth ions (Bi3+) is developed on the basis of sol–gel... 相似文献
123.
Problems of Kinematic Analysis and Special Positions of Mechanisms of Robots with Parallel Structure
K. A. Shalyukhin G. V. Rashoyan A. K. Aleshin S. A. Skvortsov S. V. Levin A. V. Antonov 《Journal of Machinery Manufacture and Reliability》2018,47(4):310-316
A solution to the problem of the velocities and problems of analysis of the special positions of the spatial mechanisms with parallel structure with a kinematic decoupling is considered. The Gosselin and Angeles method of partial derivatives and the apparatus of the theory of screws is used. 相似文献
124.
E. J. T. Levin G. R. McMeeking P. J. DeMott C. S. McCluskey C. E. Stockwell R. J. Yokelson 《Aerosol science and technology》2014,48(12):1264-1275
Ice nucleating particles (INP) initiate heterogeneous ice nucleation in mixed-phase clouds, influencing cloud phase and onset temperatures for ice formation. Determination of particle types contributing to atmospheric INP populations requires isolation of the relatively rare INP from a total particle sample, typically followed by time-consuming single-particle characterization. We propose a method to estimate the contributions of light-absorbing, primarily refractory black carbon (rBC), particles to INP populations by selectively removing them prior to determination of INP concentrations. Absorbing particles are heated to their vaporization temperature using laser induced incandescence in a single particle soot photometer (SP2) and the change in INP number concentrations, compared to unheated samples, is assessed downstream in the CSU Continuous Flow Diffusion Chamber (CFDC). We tested this approach in the laboratory using strongly-absorbing and nonabsorbing aerosol types to confirm effective removal of rBC INP and to explore the impact of the processing on non-light-absorbing INP. An INP-active rBC particle type was efficiently removed, while nonabsorbing kaolinite and a soil-based INP were not affected by laser exposure. Results for the products of wiregrass combustion indicated that absorbing particles, primarily rBC, accounted for about 40% of all INP, consistent with electron microscopy of INP emitted during prescribed burns of this fuel type. However, kaolinite internally mixed with rBC exhibited reduced activity after passing through the SP2, suggesting that the validity of the method for realistic internal mixtures needs additional research. The sensitivity of the CFDC presently limits applicability of the method to relatively high INP number concentration samples.
Copyright 2014 American Association for Aerosol Research 相似文献
125.
Abdullah Y. Hassan Sairah Yousaf Moran R. Levin Osamah J. Saeedi Saima Riazuddin Janet L. Alexander Zubair M. Ahmed 《International journal of molecular sciences》2022,23(1)
Congenital cataracts (CC) are responsible for approximately one-tenth of childhood blindness cases globally. Here, we report an African American family with a recessively inherited form of CC. The proband demonstrated decreased visual acuity and bilateral cataracts, with nuclear and cortical cataracts in the right and left eye, respectively. Exome sequencing revealed a novel homozygous variant (c.563A > G; p.(Asn188Ser)) in GJA3, which was predicted to be pathogenic by structural analysis. Dominantly inherited variants in GJA3 are known to cause numerous types of cataracts in various populations. Our study represents the second case of recessive GJA3 allele, and the first report in African Americans. These results validate GJA3 as a bona fide gene for recessively inherited CC in humans. 相似文献
126.
M. M. Gorelova A. J. Pertsin V. Yu. Levin L. I. Makarova L. V. Filimonova 《应用聚合物科学杂志》1992,45(12):2075-2078
X-ray photoelectron spectroscopy is used to reveal surface/bulk compositional relationships in blends of polydimethylsiloxane (PDMS) and PDMS/polycarbonate block copolymers in poly(vinyl chloride) (PVC). It is shown that the surface of PVC can be enriched in siloxane up to 60 at. % PDMS without visible indications of phase separation. 相似文献
127.
复合材料深度方向超声C扫描检测技术 总被引:10,自引:1,他引:10
介绍一种基于超声传播时域特性的深度方向超声C扫描成象检测技术,一次扫描可以同时获取被测材料内部若干层的扫描检测图象。 相似文献
128.
A. R. Agachev R. A. Daishev S. F. Levin S. V. Mavrin Z. G. Murzakhanov B. P. Pavlov A. F. Skochilov Yu. P. Chugunov O. P. Shindyaev 《Measurement Techniques》2009,52(6):613-620
The functional-block diagram of the Dulkyn gravitational wave detector is described. 相似文献
129.
Kyle S. Landry Andrea Vu Robert E. Levin 《International journal of molecular sciences》2014,15(1):1300-1314
The ability to induce an extracellular DNase from a novel thermophilic fungus was studied and the DNAse purified using both traditional and innovative purification techniques. The isolate produced sterile hyphae under all attempted growing conditions, with an average diameter of 2 μm and was found to have an optimal temperature of 45 °C and a maximum of 65 °C. Sequencing of the internal transcribed region resulted in a 91% match with Chaetomium sp., suggesting a new species, but further clarification on this point is needed. The optimal temperature for DNase production was found to be 55 °C and was induced by the presence of DNA and/or deoxyribose. Static growth of the organism resulted in significantly higher DNase production than agitated growth. The DNase was purified 145-fold using a novel affinity membrane purification system with 25% of the initial enzyme activity remaining. Electrophoresis of the purified enzyme resulted in a single protein band, indicating DNase homogeneity. 相似文献
130.