排序方式: 共有11条查询结果,搜索用时 15 毫秒
1.
E. A. Azizov S. S. Ananyev V. A. Belyakov E. N. Bondarchuk A. A. Voronova A. A. Golikov P. R. Goncharov A. Yu. Dnestrovskij E. R. Zapretilina D. P. Ivanov A. A. Kavin I. V. Kedrov A. V. Klischenko B. N. Kolbasov S. V. Krasnov A. I. Krylov V. A. Krylov E. G. Kuzmin B. V. Kuteev A. N. Labusov V. E. Lukash I. I. Maximova S. Yu. Medvedev A. B. Mineev V. P. Muratov V. S. Petrov I. Yu. Rodin V. Yu. Sergeev A. V. Spitsyn V. N. Tanchuk V. A. Trofimov R. R. Khayrutdinov M. V. Khokhlov Yu. S. Shpanskiy 《Physics of Atomic Nuclei》2016,79(7):1125-1136
The level of knowledge accumulated to date in the physics and technologies of controlled thermonuclear fusion (CTF) makes it possible to begin designing fusion—fission hybrid systems that would involve a fusion neutron source (FNS) and which would admit employment for the production of fissile materials and for the transmutation of spent nuclear fuel. Modern Russian strategies for CTF development plan the construction to 2023 of tokamak-based demonstration hybrid FNS for implementing steady-state plasma burning, testing hybrid blankets, and evolving nuclear technologies. Work on designing the DEMO-FNS facility is still in its infancy. The Efremov Institute began designing its magnet system and vacuum chamber, while the Kurchatov Institute developed plasma-physics design aspects and determined basic parameters of the facility. The major radius of the plasma in the DEMO-FNS facility is R = 2.75 m, while its minor radius is a = 1 m; the plasma elongation is k 95 = 2. The fusion power is P FUS = 40 MW. The toroidal magnetic field on the plasma-filament axis is B t0 = 5 T. The plasma current is I p = 5 MA. The application of superconductors in the magnet system permits drastically reducing the power consumed by its magnets but requires arranging a thick radiation shield between the plasma and magnet system. The central solenoid, toroidal-field coils, and poloidal-field coils are manufactured from, respectively, Nb3Sn, NbTi and Nb3Sn, and NbTi. The vacuum chamber is a double-wall vessel. The space between the walls manufactured from 316L austenitic steel is filled with an iron—water radiation shield (70% of stainless steel and 30% of water). 相似文献
2.
Ratha Satyajit Vernekar Dnyanesh Sivaneri Kavin Jagadeesan Dinesh Rout Chandra Sekhar 《Journal of Solid State Electrochemistry》2017,21(6):1665-1674
Journal of Solid State Electrochemistry - In this work, we report the synthesis and electrode applications of iron-carbon nanohybrid particles prepared by carbonization of a nanocomposite of FeOOH... 相似文献
3.
Light emitting diode-based detectors Absorbance, fluorescence and spectroelectrochemical measurements in a planar flow-through cell 总被引:2,自引:0,他引:2
Purnendu K. Dasgupta In-Yong Eom Kavin J. Morris Jianzhong Li 《Analytica chimica acta》2003,500(1-2):337-364
Light emitting diodes (LEDs) were first used for chemical analysis three decades ago. They are finally making their appearance in commercial analytical systems and dedicated detectors. LEDs are the most energy-efficient means of producing monochromatic light, and provide a concentrated small cool emitter ideal for miniature analytical devices. Although they rank behind fluorescent and halogen discharge lamps in total conversion efficiency (lm/W), new efficiency records are being set every year such that by next decade broadband (white) LED sources are not only likely in analytical instrumentation, but for general illumination. This paper begins with a review of analytical use of LEDs that has been advanced in the last decade. LED-based absorbance measurement and its use in pedagogy, titrations, in providing immunity to refractive index and turbidity effects, in field and process analysis, in capillary electrophoresis (CE), in liquid–liquid extraction systems, in film and drop-based analytical systems and with liquid core waveguides (LCWs) are discussed. LED-based fluorescence and spectroelectrochemical detection follows next. Multipurpose LED-based analytical instrumentation and special analytical applications and general applications are discussed. A listing of (mostly web-based) resources for fabricating LED-based detectors is then provided. Detector circuits and available components are considered and different modes of driving LEDs are compared. The temperature dependence of LED characteristics and strategies to ameliorate this problem are discussed.
The review and general resource material is followed with the construction details, operation and performance observed for a simple-to-fabricate multipurpose cell that allows simultaneous multiwavelength absorbance, fluorescence and spectroelectrochemical detection. 相似文献
4.
Khvostenko P. P. Bondarchuk E. N. Kavin A. A. Leonov V. M. Chudnovskiy A. N. 《Physics of Atomic Nuclei》2021,84(7):1332-1341
Physics of Atomic Nuclei - At the present time, the construction of the T-15MD Tokamak is being completed at the National Research Center Kurchatov Institute. The magnet system of the Tokamak... 相似文献
5.
Chu Jin Kiat Lim Mitchell S. W. Tiong T. Joyce Yap Yeow Hong Lim Li Yan Yeoh Pricella S. J. Kumar Kavin Chong Siewhui Chan Yi Jing Pan Guan-Ting Yang Thomas C. K. 《Research on Chemical Intermediates》2019,45(12):6003-6019
Research on Chemical Intermediates - This paper studies the effect of addition of Zn and ultrasound-assisted co-precipitation on Cu-Mn oxide catalysts for the oxidation of CO. Cu-Mn-Zn oxide... 相似文献
6.
Telnova A. Yu. Kurskiev G. S. Balachenkov I. M. Bakharev N. N. Gusev V. K. Zhil’tsov N. S. Kavin A. A. Kiselev E. O. Minaev V. B. Miroshnikov I. V. Patrov M. I. Petrov Yu. V. Sakharov N. V. Tokarev V. A. Tolstyakov S. Yu. Tukhmeneva E. A. Khromov N. A. Shulyat’ev K. D. Shchegolev P. B. 《Technical Physics》2021,66(3):401-408
Technical Physics - The article presents the results of studying the transfer of heat and particles in the Globus-M2 spherical tokamak in discharges with neutral injection at the current ramp up.... 相似文献
7.
R. S. Prakasham M. Hymavathi Ch Subba Rao S. K. Arepalli J. Venkateswara Rao P. Kavin Kennady K. Nasaruddin J. B. Vijayakumar P. N. Sarma 《Applied biochemistry and biotechnology》2010,160(1):72-80
l-Asparaginase is an important component in the treatment of acute lymphoblastic leukemia in children. Its antineoplastic activity
toward malignant cells is due to their characteristic nature in slow synthesis of l-asparagine (Asn), which causes starvation for this amino acid, while normal cells are protected from Asn starvation due to
their ability to produce this amino acid. The relative selectivity with regard to the metabolism of malignant cells forces
to look for novel asparaginase with little glutaminase-producing systems compared to existing enzyme. In this investigation,
the role of the extracellular asparaginase enzyme produced by an isolated bacterial strain was studied. Biochemical characterization
denoted that this isolated bacterial strain belongs to the Bacillus circulans species. The strain was tested for l-asparaginase production, and it was observed that, under an optimized environment, this isolate produces a maximum of 85 IU
ml−1 within 24-h incubation. This enzyme showed less (60%) glutaminase activity compared to commercial Erwinia sp. l-asparaginase. The partially purified enzyme showed an approximate molecular weight of 140 kDa. This enzyme potency in terms
of antineoplastic activity was analyzed against the cancer cells, CCRF-CEM. Flow cytometry experiments indicated an increase
of sub-G1 cell population when the cells were treated with l-asparaginase. 相似文献
8.
Timokhin V. M. Sergeev V. Yu. Anufriev E. A. Korobko D. D. Sharov I. A. Varfolomeev V. I. Novokhatsky A. N. Bakharev N. N. Vekshina E. O. Dolgova K. V. Zhil’tsov N. S. Kavin A. A. Kapralov V. G. Kiselev E. O. Koval’ A. N. Kurskiev G. S. Lobanov K. M. Minaev V. B. Miroshnikov I. V. Mukhin E. E. Petrov Yu. V. Rozhansky V. A. Sakharov N. V. Skokov V. G. Tel’nova A. Yu. Tkachenko E. E. Tokarev V. A. Tolstyakov S. Yu. Tyukhmeneva E. A. Khromov N. A. 《JETP Letters》2022,116(5):300-306
JETP Letters - The diagnostic of the peripheral plasma parameters in terms of the relation of lines of neutral helium is included in the diagnostic complex of the tokamak Globus-M2. The first... 相似文献
9.
V. K. Gusev V. E. Golant E. Z. Gusakov V. V. D’yachenko M. A. Irzak V. B. Minaev E. E. Mukhin A. N. Novokhatskii K. A. Podushnikova G. T. Razdobarin N. V. Sakharov E. N. Tregubova V. S. Uzlov O. N. Shcherbinin V. A. Belyakov A. A. Kavin Yu. A. Kostsov E. G. Kuz’min V. F. Soikin E. A. Kuznetsov V. A. Yagnov 《Technical Physics》1999,44(9):1054-1057
10.
H J O'Neill S M Gordon B Krotoszynski H Kavin J P Szidon 《Biomedical chromatography : BMC》1987,2(2):66-70
Expired air samples have been analyzed from three groups of human subjects (normal, liver dysfunction, lung cancer) and the baboon (Papio anubus). Of the several hundred compounds present, three compounds were of particular interest due to their structural relationship to the isoprenoid-type intermediates in the sterol pathway. These compounds were 1-methyl-4-(1-methyl-ethenyl)-cyclohexene, 6-methyl-5-hepten-2-one, and 6,10-dimethyl-5,9-undecadien-2-one. Hydroxyacetone was also found in all samples screened. The relationship of these compounds to the non-sterol pathway of mevalonate metabolism is discussed. 相似文献