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Marichev A. E. Levin R. V. Gordeeva A. B. Gagis G. S. Kuchinskii V. I. Pushnyi B. V. Prasolov N. D. Shmidt N. M. 《Technical Physics Letters》2017,43(1):88-91
Technical Physics Letters - Specific features of mechanical-stress relaxation in InGaAsP/InP heterostructures for 1064 nm laser radiation converters have been studied. It is established that stress... 相似文献
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E.?A.?PuzikovEmail author N.?D.?Goletskii B.?Ya.?Zilberman A.?S.?Kudinov A.?A.?Naumov D.?N.?Kukharev M.?S.?Agafonova-Moroz D.?V.?Ryabkov O.?V.?Shmidt 《Radiochemistry》2017,59(6):587-595
Beyond-design-basis regimes of centrifugal contactors for U stripping and of mixer–settlers for carbonate regeneration of the solvent, 30% TBP in Isopar M, were studied from the viewpoint of the influence of incomplete uranium stripping on the phase stability of the extraction system in the step of the carbonate scrubbing of the solvent. Dynamic relationship between these two operations was determined. A mathematical model of uranium stripping at stepwise–20% deviation from the nominal value was developed and verified; it was shown that the beyond-design-basis regime develops in such apparatuses within 4 h at the total trial time longer than 8 h. The mathematical relationships obtained were used in the development of software for calculating transient processes that occur when the stream parameters in the course of carbonate regeneration of the solvent change. The beyond-design-basis regime of the solvent regeneration was found to have two regions: region of stoichiometric excess of carbonate ions over uranyl ions with the risk of precipitation and region of excess of uranyl ions over carbonate ions with acidification of the unit and uranium breakthrough with the recycled solvent. The conditions of the tests performed correspond to the second region. 相似文献
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The results of studying the nuclear spin-lattice relaxation of the nuclear spins of 63,65Cu in the CuAlO2 semiconductor compound (T = 77, 300 K) by the method of nuclear quadrupole resonance of Cu are presented. The relaxation rates in the CuAlO2 compound contain contributions from the magnetic and quadrupole relaxation mechanisms. The magnetic contribution to the relaxation rate is caused by hyperfine magnetic fields of mobile holes. Comparison of the magnetic contribution to the relaxation rate with electrical conductivity made it possible to estimate the carrier concentration and mobility. 相似文献
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A possible abiogenic origin for oil structures is indicated by the carbon and sulfur isotope ratios in crude oil, oil components,
and other natural systems. Oils are enriched in the 34S isotope as the sulfur content decreases, which provides indirect evidence for an increase in the contribution of biomaterial
to oil as the sizes of oil pools decrease.
Translated from Khimiya i Tekhnologiya Topliv i Masel, No.3, pp. 36 – 38, May – June, 2009. 相似文献
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T. S. Argunova E. I. Belyakova I. V. Grekhov A. G. Zabrodskiĭ L. S. Kostina L. M. Sorokin N. M. Shmidt J. M. Yi J. W. Jung J. H. Je N. V. Abrosimov 《Semiconductors》2007,41(6):679-683
The results of studying the structural and electrical properties of structures produced by the method of direct bonding of Ge x Si1?x and Si wafers are reported. The wafers were cut from the crystals grown by the Czochralski method. Continuity of the interface and the crystal-lattice defects were studied by X-ray methods using synchrotron radiation and by scanning electron microscopy. Measurements of the forward and reverse current-voltage characteristics of the p-Ge x Si1?x /n-Si diodes made it possible to assess the effect of the crystallattice defects on the electrical properties of heterojunctions. Satisfactory electrical parameters suggest that the technology of direct bonding is promising for the fabrication of large-area Ge x Si1?x /Si heterojunctions. 相似文献
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M. S. Agafonova-Moroz L. V. Krasnikov N. E. Mishina A. Yu. Shadrin O. V. Shmidt 《Radiochemistry》2009,51(4):403-405
The possibility of adding an HDEHP solution as solubilizer to a CMPO-diluent system was examined. In the presence of Zr in
the organic phase, mixed complexes are formed in this case. They exert no appreciable effect on the dependence of the Eu extraction
on the acid concentration but noticeably increase the extractant capacity. 相似文献