检索结果-南通市图书馆

Optical properties and CO_2 laser SHG with HgGa_2S_4

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Optics Letters 2003年第10期1卷 613-615页

作者：任德明黄金哲曲彦臣胡孝勇张莉莉 Andreev Yuri Geiko Pavel Badikov Valerii Lanskii Grigorii.tikhomirov.Alexander institute of Opto-Electronics Harbin Institute of Technology Harbin 150001 institute of Opto-Electronics Harbin Institute of Technology Harbin 150001 Department of Electronic Science and Technology Harbin University of Science and Technology Harbin 150080 institute for Optical Monitoring SB RAS Tomsk 634055 Russia Kuban State University Krasnodar 350040 Russia

Optical properties and nonlinearity on phase-matching (PM) of two (yellow and orange) phase crystals were investigated in details. Damage threshold was determined in comparison with middle infrared (iR) crystal at identical experimental conditions. Second harmonic generation (SHG) of 30 ns TEA CO2 laser pulses was realized with 5% efficiency in energy and 6.9% in peak power.

关键词： infrared radiation Optical frequency conversion Optical properties Second harmonic generation

Production and characterization of bioaerosols for model validation in spacecraft environment

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2018年第7期30卷 227-238页

作者： Anniina Salmela Eero Kokkonen ilpo Kulmala Anna-Maria Veijalainen Rob van Houdt Natalie Leys Audrey Berthier ilyin Viacheslav Sergey Kharin Julia Morozova Alexander tikhomirov Pertti Pasanen Department of Environmental and Biological Sciences University of Eastern Finland PO Box 1627 FI-70211 Kuopio Finland VTT Ltd PO Box 1300 FI-33100 Tampere Finland Microbiology Unit Belgian Nuclear Research Centre B-2400 Mol Belgium institut de Medecine et de Physiologie Spatiales BP 74404 F-31405 Toulouse Cedex France institute of Bio-Medical Problems 76-A Khorosheu Skoye shosse RU-123007 Moscow Russia institute of Biophysics SB RAS Akademgorodok Krasnoyarsk RU-660036 Russia

This study aimed to evaluate the suitability of two bioaerosol generation systems（dry and wet generation） for the aerosolization of microorganisms isolated from the international Space Station, and to calibrate the produced bioaerosols to fulfill the requirements of computational fluid dynamics model（CFD） validation. Concentration, stability, size distribution, agglomeration of generated bioaerosol and deposition of bioaerosols were analyzed. in addition, the dispersion of non-viable particles in the air was *** proved that wet generation from microbial suspensions could be used for the production of well-calibrated and stabile bioaerosols for model validation. For the simulation of the natural release of fungal spores, a dry generation method should be used. This study showed that the used CFD model simulated the spread of non-viable particles fairly well. The mathematical deposition model by Lai and Nazaroff could be used to estimate the deposition velocities of bioaerosols on surfaces, although it somewhat underestimated the measured deposition velocities.

关键词： Bioaerosol Modeling CFD Spacecraft Fungi Bacteria

在线全文

学校读者我要写书评

暂无评论

用于燃耗计算的三维MCCOOR程序系统

核动力工程 2006年第3期27卷 16-19页

作者：李金鸿张松柏 E.F.Kryuchkov G.V.tikhomirov 北京应用物理与计算数学研究所北京100088 中国工程物理研究院北京研究生部 100088 Moscow Engineering Physics institute RUS

介绍了由标准程序MCNP、COUPLE、ORiGEN-S组成的耦合程序系统MCCOOR的结构和功能,用VVER等轻水堆栅元和燃料组件的多个Benchmark模型进行了检验。本文列举了在VVER-1000带可燃毒物Gd的燃料组件Benchmark模型上,分别用UO2和MOX燃料的检... 详细信息

介绍了由标准程序MCNP、COUPLE、ORiGEN-S组成的耦合程序系统MCCOOR的结构和功能,用VVER等轻水堆栅元和燃料组件的多个Benchmark模型进行了检验。本文列举了在VVER-1000带可燃毒物Gd的燃料组件Benchmark模型上,分别用UO2和MOX燃料的检验结果。所有检验结果表明:MCCOOR的反应性和核素成分的计算结果与Benchmark的结果在误差范围内一致。

关键词：反应堆燃耗 MCCOOR程序 MCNP程序 ORiGEN-S程序

USE EXPEDiENCY OF QUANTUM UNiTS OF RADiANT ENERGY iN PLANTS LiGHT CULTURE

在线全文

学校读者我要写书评

暂无评论

USE EXPEDIENCY OF QUANTUM UNITS OF RADIANT ENERGY IN PLANTS ...

Comparison of Simulation Methods of ion-Atomic Collisions in PiC-MC

26th Session of the CiE

作者： tikhomirov,A.A. Prikupets,L.B. institute Of Biophysics of Siberian Branch of Russian Academy of Sciences Krasnoyarsk All-Russian Research Lighting Engineering institute Moscow

Last years it became customary to use physical units to measure radiant energy when quantum quantity of irradiation falling on plants is *** analysis of many years’ experience of photosynthetic photon flux(PPF)units(μmol/ms)and power units(W/m)use in plants light culture is given in the *** and disadvantages of these units as applied to light culture are *** concept of PPF unit introduction supposes that every light quantum falling on a

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Applied Mathematics and Physics 2014年第13期2卷 1233-1241页

作者： Valeriy Sysun Alexander Sysun Vladimir ignakhin Viktor Titov Alexander tikhomirov Department of Physical Engineering Petrozavodsk State University Petrozavodsk Russia

The main ion-atomic collision treatment methods based on Monte-Carlo simulation are considered and discussed. We have proposed an efficient scheme for simulation of time between collisions taking into account cross-section dependence on ion velocity and random generation of ion velocities and scattering angles after collisions. The developed algorithm of simulation of interval between collisions takes into account the change of relative velocity of ion-atom pair as well as the change of cross-section of collision and atomic concentration. At the same time, unlike the widely used “null-collision” method, both the probability of collision and change of particles’ state which determines this probability are taken into consideration for each particle independently in time. The simulation results according to the techniques proposed are found to be close to the theoretical values of ion drift velocities. it is revealed that the “null-collision” method results in exceeding of drift velocity in strong and intermediate fields. At the same time the proposed method of accumulation of probability under the same conditions gives values close to theoretical ones. in weak fields calculated values of drift velocity in both methods exceed theoretical values to some small extent.

关键词： PiC-MC Simulation ion-Atomic Collisions Discharge Plasma

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

控制鼠疫的全球态势

地方病译丛 1986年第4期 13-19页

作者： E.tikhomirov 刘云鹏 WHO日内瓦总部细菌性疾病科

鼠疫是一种烈性传染病,在过去年代,它使人类付出了几亿人的生命。猖獗的鼠疫大流行在历史上有数次记载,例如:a)圣经上记载着大约在公元前1320年当腓力斯人对犹太人进行战争时感染上一种瘟疫,这种瘟疫现在许多人认为是腺鼠疫。b)Rufus 氏... 详细信息

鼠疫是一种烈性传染病,在过去年代,它使人类付出了几亿人的生命。猖獗的鼠疫大流行在历史上有数次记载,例如:a)圣经上记载着大约在公元前1320年当腓力斯人对犹太人进行战争时感染上一种瘟疫,这种瘟疫现在许多人认为是腺鼠疫。b)Rufus 氏(一位内科医生)精确地描述过大约在公元100年时在埃及发生的鼠疫。

关键词：鼠疫监测 WHO 日内瓦瑞士自然疫源地肺鼠疫

苏联V.A.奥勃鲁契夫对中国西北地区地质调查的贡献

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

河北地质大学学报 1992年第5期 546-549页

作者： V.V.tikhomirov 刘亚民苏联莫斯科科学院通讯院士、国际地质科学史委员会副主席

V.A.奥勃鲁契夫是19世纪俄国的著名地质和地貌学家。他曾几次(1880,1892—1894,1905—1906)来到中国东北、西北地区考察,著述甚多。对中国的地质和地貌学研究,特别是论述了中国黄土分布与成因方面做出了贡献。本文主要记述了他在1892—1... 详细信息

V.A.奥勃鲁契夫是19世纪俄国的著名地质和地貌学家。他曾几次(1880,1892—1894,1905—1906)来到中国东北、西北地区考察,著述甚多。对中国的地质和地貌学研究,特别是论述了中国黄土分布与成因方面做出了贡献。本文主要记述了他在1892—1894年来中国西北部地区考察的情况,并把要阐述他这次考察的学术成果。

关键词：准噶尔绰罗斯部地质调查 V.A 鄂尔多斯山系海平面湖相陆相中华人民共和国山脉南山第三纪李希霍芬地貌学地形学褶皱系苏联苏维埃社会主义共和国联盟

Study of vibrational relaxation of O_3 (001)using photoacoustic technique

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Acoustics 1997年第4期16卷 372-376页

作者： D Courtois B Parvitte(GMSA University of Reims Champagne Andenne BP347-51062 Reims Codex-France)Y Ponomarev O tikhomirova B tikhomirov(institute of Atmospheric Optics SB RAS 1 Akademicheskii av., Tomsk 634055.. Russia)V Zeninari(GMSA University of Reims

The vibration- translational relaxation ime of ozone (001) was measured from phase delay of the photoacoustic detected signal with respect to signal of CO2-laser radiation in the binary mixtures of O3 with N2, O2, and Ar at the temperature 300°K. To eliminate the phase delay of the detected signal caused by inertia of the microphone membrane the technique of electrical activation was used.

关键词： ppm Study of vibrational relaxation of O3 using photoacoustic technique

Performance and calibration of quark/gluon-jet taggers using 140 fb^(-1) of pp collisions at √s=13 TeV with the ATLAS detector

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2024年第2期48卷 1-25页

作者： G. Aad B. Abbott K. Abeling N.J. Abicht S.H. Abidi A. Aboulhorma H. Abramowicz H. Abreu Y. Abulaiti B.S. Acharya C. Adam Bourdarios L. Adamczyk S.V. Addepalli M.J. Addison J. Adelman A. Adiguzel T. Adye A.A. Affolder Y. Afik M.N. Agaras J. Agarwala A. Aggarwal C. Agheorghiesei A. Ahmad F. Ahmadov W.S. Ahmed S. Ahuja X. Ai G. Aielli A. Aikot M. Ait Tamlihat B. Aitbenchikh i. Aizenberg M. Akbiyik T.P.A. Åkesson A.V. Akimov D. Akiyama N.N. Akolkar K. Al Khoury G.L. Alberghi J. Albert P. Albicocco G.L. Albouy S. Alderweireldt M. Aleksa i.N. Aleksandrov C. Alexa T. Alexopoulos F. Alfonsi M. Algren M. Alhroob B. Ali H.M.J. Ali S. Ali S.W. Alibocus M. Aliev G. Alimonti W. Alkakhi C. Allaire B.M.M. Allbrooke J.F. Allen C.A. Allendes Flores P.P. Allport A. Aloisio F. Alonso C. Alpigiani M. Alvarez Estevez A. Alvarez Fernandez M. Alves Cardoso M.G. Alviggi M. Aly Y. Amaral Coutinho A. Ambler C. Amelung M. Amerl C.G. Ames D. Amidei S.P. Amor Dos Santos K.R. Amos V. Ananiev C. Anastopoulos T. Andeen J.K. Anders S.Y. Andrean A. Andreazza S. Angelidakis A. Angerami A.V. Anisenkov A. Annovi C. Antel M.T. Anthony E. Antipov M. Antonelli F. Anulli M. Aoki T. Aoki J.A. Aparisi Pozo M.A. Aparo L. Aperio Bella C. Appelt A. Apyan N. Aranzabal S.J. Arbiol Val C. Arcangeletti A.T.H. Arce E. Arena J-F. Arguin S. Argyropoulos J.-H. Arling O. Arnaez H. Arnold G. Artoni H. Asada K. Asai S. Asai N.A. Asbah J. Assahsah K. Assamagan R. Astalos S. Atashi R.J. Atkin M. Atkinson H. Atmani P.A. Atmasiddha K. Augsten S. Auricchio A.D. Auriol V.A. Austrup G. Avolio K. Axiotis G. Azuelos D. Babal H. Bachacou K. Bachas A. Bachiu F. Backman A. Badea P. Bagnaia M. Bahmani A.J. Bailey V.R. Bailey J.T. Baines L. Baines O.K. Baker E. Bakos D. Bakshi Gupta V. Balakrishnan R. Balasubramanian E.M. Baldin P. Balek E. Ballabene F. Balli L.M. Baltes W.K. Balunas J. Balz E. Banas M. Bandieramonte A. Bandyopadhyay S. Bansal L. Barak M. Barakat E.L. Barberio D. Barberis M. Barbero M.Z. Barel K.N. Barends T. Barillari M-S. Barisits T. Barklow P. Baron D.A. Baron Mo The ATLAS Collaboration

The identification of jets originating from quarks and gluons,often referred to as quark/gluon tagging,plays an important role in various analyses performed at the Large Hadron Collider,as Standard Model measurements and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced *** paper describes the measurement of the efficiencies of quark/gluon taggers developed within the ATLAS Collaboration,using √s=13 TeV proton–proton collision data with an integrated luminosity of 140 fb^(-1) collected by the ATLAS *** taggers with high performances in rejecting jets from gluon over jets from quarks are studied:one tagger is based on requirements on the number of inner-detector tracks associated with the jet,and the other combines several jet substructure observables using a boosted decision tree.A method is established to determine the quark/gluon fraction in data,by using quark/gluon-enriched subsamples defined by the jet *** in tagging efficiency between data and simulation are provided for jets with transverse momentum between 500 GeV and 2 TeV and for multiple tagger working points.

关键词： ATLAS JET QUARK GLUON TAGGiNG