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1.
Experimental study on a planar capacitative displacement sensor 总被引:1,自引:0,他引:1
An experimental study is described on a planar capacitative displacement sensor. It differs from existing models in being simple and giving scope for using film techniques. The sensor is particularly effective in measuring large displacements, e.g., in physics equipment.Translated from Izmeritel'naya Tekhnika, No. 3, pp. 36–37, March, 1995. 相似文献
2.
V. P. Evtikhiev I. V. Kudryashov E. Yu. Kotel’nikov V. E. Tokranov A. N. Titkov I. S. Tarasov Zh. I. Alferov 《Semiconductors》1998,32(12):1323-1327
The electroluminescence and stimulated emission of lasers with one layer of InAs quantum dots (QD’s) grown in a single molecular-beam
epitaxial process on vicinal GaAs(001) surfaces misoriented in the direction [010] by 2, 4 and 6° are investigated. It is
discovered that an increase in the misorientation angle leads to a blue shift and a decrease in the full width at half maximum
(FWHM) of the electroluminescence spectrum. This effect is attributed to a decrease in the size of the quantum dots and improvement
in their size uniformity. A strong dependence of the threshold current density on the width of the spontaneous luminescence
spectrum is discovered. The room-temperature threshold current density of the lasers with one layer of quantum dots and the
spontaneous luminescence spectrum having the smallest FWHM (54 meV) equals 210 A/cm2.
Fiz. Tekh. Poluprovodn. 32, 1482–1486 (December 1998) 相似文献
3.
M. Kh. Rabinovich V. G. Kudryashov M. V. Markushev 《Metal Science and Heat Treatment》1988,30(8):609-612
1. | The characteristics of strength (u, o 2), plasticity (, ) in the longitudinal and transverse directions, impact toughness in the transverse direction, and also the nominal stress intensity factor K c * are practically independent of the grain size of the alloy AMg6. |
2. | The ultrafine-grained structure somewhat reduces the endurance of the alloy AMg6 in the region of low cycle fatigue and increases endurance and fatigue limit in the region of multicycle fatigue. |
3. | Reduced grain size is accompanied by increased resistance to fatigue crack nucleation in alloy AMg6. |
4. | Alloy AMg6 with ultrafine-grained structure is isotropic in crack resistance, and with coarse-grained structure it is anisotropic. The highest fatigue crack growth rate is found in transverse speciment of coarse-grained material. |
5. | The effect of the grain size on crack resistance depends on the change of the ratio of resistance to crack nucleation and growth at high and low stress levels under conditions of variable loading. |
4.
V. A. Bobkov Yu. I. Ron’shin A. P. Kudryashov V. Yu. Mashentsev 《Programming and Computer Software》2014,40(4):159-165
A method of visual navigation by stereoimages for autonomous underwater vehicles is suggested. Two modifications of the method are considered. The first one is based on integration of measurement data of onboard navigation system with visual data. The second modification relies on the use of a six-cloud computation scheme. Results of computational experiments with model data are presented. 相似文献
5.
Songyu Dong Weili Zheng Nicholas Pinkerton Jacob Hansen Svetlana B. Tikunova Jonathan P. Davis Sarah M. Heissler Elena Kudryashova Edward H. Egelman Dmitri S. Kudryashov 《International journal of molecular sciences》2022,23(13)
Due to its essential role in cellular processes, actin is a common target for bacterial toxins. One such toxin, TccC3, is an effector domain of the ABC-toxin produced by entomopathogenic bacteria of Photorhabdus spp. Unlike other actin-targeting toxins, TccC3 uniquely ADP-ribosylates actin at Thr-148, resulting in the formation of actin aggregates and inhibition of phagocytosis. It has been shown that the fully modified F-actin is resistant to depolymerization by cofilin and gelsolin, but their effects on partially modified actin were not explored. We found that only F-actin unprotected by tropomyosin is the physiological TccC3 substrate. Yet, ADP-ribosylated G-actin can be produced upon cofilin-accelerated F-actin depolymerization, which was only mildly inhibited in partially modified actin. The affinity of TccC3-ADP-ribosylated G-actin for profilin and thymosin-β4 was weakened moderately but sufficiently to potentiate spontaneous polymerization in their presence. Interestingly, the Arp2/3-mediated nucleation was also potentiated by T148-ADP-ribosylation. Notably, even partially modified actin showed reduced bundling by plastins and α-actinin. In agreement with the role of these and other tandem calponin-homology domain actin organizers in the assembly of the cortical actin network, TccC3 induced intense membrane blebbing in cultured cells. Overall, our data suggest that TccC3 imposes a complex action on the cytoskeleton by affecting F-actin nucleation, recycling, and interaction with actin-binding proteins involved in the integration of actin filaments with each other and cellular elements. 相似文献
6.
V. M. Emelyanov A. S. Abramov A. V. Bobyl V. N. Verbitsky A. S. Gudovskikh E. M. Ershenko S. A. Kudryashov E. I. Terukov O. I. Chosta M. Z. Shvarts 《Semiconductors》2013,47(9):1252-1257
The photoinduced degradation of the i-α-Si:H layer in tandem photovoltaic converters based on α-Si:H/μc-Si:H structures is analyzed in terms of the “H-collision-” and “floating-bond” models and modifications of these. It is shown that the form of the degradation dependence is well described by all models under consideration. Compared with the modified models, the original “H-collision-” and “floating-bond” models yield estimates for saturated dangling-bond concentrations, which are always dependent on the intensity of the light that caused the degradation. The modified “floating-bond” model makes it possible to exclude this dependence, and the modified “H-collision” model describes the occurrence of this dependence in a certain range of illumination intensities and its absence in another range, which is in best agreement with experimental data. 相似文献
7.
8.
A method is proposed for calculating tool-setup parameters in intermittent thread cutting such that tool life is extended. 相似文献
9.
A. E. Kudryashov Zh. V. Eremeeva E. A. Levashov V. Yu. Lopatin A. V. Sevost’yanova E. I. Zamulaeva 《Surface Engineering and Applied Electrochemistry》2018,54(5):437-445
Electrospark treatment of OT4-1 titanium alloy was performed sequentially with a STIM-20N hard-alloy electrode (TiC–20% Ni) and carbon-containing material (graphite and carbon-based composite materials). Kinetics of the mass transfer of the hard-alloy electrode was studied. The cathode mass loss during the first minute of the treatment was established. The kinetics results were processed using the methods of mathematical statistics. The erosion resistance of the applied carbon-containing materials was determined. Phase composition and relief of the coatings formed were analyzed. It was found that the application of the carbon-containing material increases the content of refractory phases in the coatings. Increase in the time of the treatment using the carbon-containing materials decreases the roughness of the coatings. 相似文献
10.