检索结果-南通市图书馆

A Custom-Tailored Multi-TW Optical Electric Field for Gigawatt Soft-X-Ray Isolated Attosecond Pulses

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Ultrafast Science 2021年第1期1卷 48-60页

作者： Bing Xue Yuuki Tamaru Yuxi Fu Hua Yuan Pengfei Lan Oliver D.Mücke Akira Suda Katsumi Midorikawa Eiji j.takahashi RIKEN Center for Advanced Photonics RIKEN2-1 HirosawaWakoSaitama 351-0198Japan Tokyo University of Science 2641 YamazakiNoda-shiChiba-ken 278-8510Japan School of Physics and Wuhan National Laboratory of Optoelectronics Huazhong University of Science and TechnologyWuhanHubei 430074China Center for Free-Electron Laser Science CFEL Deutsches Elektronen-Synchrotron DESYNotkestraße 8522607 HamburgGermany

Since the first isolated attosecond pulse was demonstrated through high-order harmonics generation(HHG)in 2001,researchers’interest in the ultrashort time region has ***,one realizes a limitation for related research such as attosecond *** bottleneck is concluded to be the lack of a high-peak-power isolated attosecond pulse ***,currently,generating an intense attosecond pulse would be one of the highest priority *** this paper,we review our recent work of a TW-class parallel three-channel waveform synthesizer for generating a gigawatt-scale soft-X-ray isolated attosecond pulse(IAP)using *** employing several stabilization methods,we have achieved a stable 50 mj three-channel opticalwaveform synthesizer with a peak power at the multi-TW *** optical-waveform synthesizer is capable of creating a stable intense optical field for generating an intense continuum harmonic beam thanks to the successful stabilization of all the ***,the precision control of shot-to-shot reproducible synthesized waveforms is *** the HHG process employing a loose-focusing geometry,an intense shot-to-shot stable supercontinuum(50–70 eV)is generated in an argon gas *** continuum spectrum supports an IAP with a transform-limited duration of 170 as and a submicrojoule pulse energy,which allows the generation of a GW-scale *** supercontinuum in the soft-X-ray region with higher photon energy of approximately 100–130 eV is also generated in neon gas from the *** transform-limited pulse duration is 106 ***,the enhancement of HHG output through optimized waveform synthesis is experimentally proved.

关键词： intense generating stabilization

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

通气搅拌发酵罐加压时的氧吸收率

发酵科技通讯 1983年第1期 58-62页

作者： S·SATO S·MUKATAKA H·KATAOKA j.takahashi 张敏华

通气搅拌发酵罐加压至5.9大气压,以亚硫酸氧化法测定其氧吸收率,以说明压力对氧吸收率的影响。供给一定量流速的空气时,氧吸收率比例地增加至压力P的0.4～0.8次方,而容积氧传递系数随压力的增加而减低。供给相同表面线速度的空气时,氧... 详细信息

通气搅拌发酵罐加压至5.9大气压,以亚硫酸氧化法测定其氧吸收率,以说明压力对氧吸收率的影响。供给一定量流速的空气时,氧吸收率比例地增加至压力P的0.4～0.8次方,而容积氧传递系数随压力的增加而减低。供给相同表面线速度的空气时,氧吸收率比例地增加至压力的1.1次方,而容积氧传递系数比例地增加至P0.1。考虑到受压力影响下的容积氧传递系数（Kd）推荐下面的经验公式:Kd=2.8×10-8(P0.1(μGP0.35(N1.8)这里μGP是表面空气线速度,N是叶轮转速。

关键词：氧吸收率空气氧摄取率工业气体

钆塞酸二钠动态增强MRI对心率和血氧的影响

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

国际医学放射学杂志 2015年第6期 578-578页

作者： T.Hayashi S.Saitoh Y.Tsuji j.takahashi N.Tagaya M.Hiramoto 高海军 Department of Radiological Technology Toranomon Hospital

摘要目的探讨在肝脏疾病病人中行动态增强(DCE)MRI,钆塞酸二钠是否影响周边的毛细血管血氧饱和度(Sp O2)和(或)心率(HR)。材料与方法此项回顾性研究通过

关键词：钆塞酸二钠动态增强 MRI 心率

Measurements of dihadron correlations relative to the event plane in Au+Au collisions at√^(S)NN=200 GeV

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 Physics C 2021年第4期45卷 198-241页

作者： H.Agakishiev M.M.Aggarwal Z.Ahammed A.V.Alakhverdyants I.Alekseev j.Alford B.D.Anderson C.D.Anson D.Arkhipkin G.S.Averichev j.Balewski D.R.Beavis N.K.Behera R.Bellwied M.j.Betancourt R.R.Betts A.Bhasin A.K.Bhat H.Bichsel j.Bieleik j.Bielcikova B.Biritz L.C.Bland W.Borowski j.Bouchet E.Braidot A.V.Brandin A.Bridgeman S.G.Brovko E.Bruna S.Bueltmann I.Bunzarov T.P.Burton X.Z.Cai H.Caines M.Calderon de la Barca Sanchez D.Cebra R.Cendejas M.C.Cervantes Z.Chajecki P.Chaloupka S.Chattopadhyay H.F.Chen j.H.Chen j.Y.Chen L.Chen j.Cheng M.Cherney A.Chikanian K.E.Choi W.Christie P.Chung M.j.M.Codrington R.Corliss j.G.Cramer H.j.Crawford S.Dash A.Davila Leyva L.C.De Silvat R.R.Debbe T.G.Dedovich A.A.Derevschikov R.Derradi de Souza L.Didenko P.Djawotho S.M.Dogra X.Dong j.L.Drachenberg j.E.Draper j.C.Dunlop L.G Efimov M.Elnim j.Engelage G Eppley M.Estienne L.Eun O.Evdokimov R.Fatemi j.Fedorisin A.Feng R.G.Fersch P.Filip E.Finch V.Fine Y.Fisyak C.A.Gagliardi D.R.Gangadharan A.Geromitsos F.Geurts P.Ghosh Y.N.Gorbunov A.Gordon O.Grebenyuk D.Grosnick S.M.Guertin A.Gupta W.Guryn B.Haag O.Hajkova A.Hamed L-X.Han j.W.Harris j.P.Hays-Wehle M.Heinz S.Heppelmann A.Hirsch E.Hjort G.W.Hoffmann D.j.Hofiman B.Huang H.Z.Huang T.j.Humanic L.Huo G.Igo P.jacobs W.W.jacobs C.jena F.jin j.joseph E.G.judd S.Kabana K.Kang j.Kapitan K.Kauder H.Ke D.Keane A.Kechechyan D.Kettler D.P.Kikola j.Kiryluk A.Kisiel V.Kizka A.G.Knospe D.D.Koetke T.Kollegger j.Konzer I.Koralt L.Koroleva W.Korsch L.Kotchenda V.Kouchpil P.Kravtsov K.Krueger M.Krus L.Kumar P.Kurnadi M.A.C.Lamont j.M.Landgraf S.LaPointe j.Lauret A.Lebedev R.Lednicky j.H.Lee W.Leight M.j.LeVine C.Lil L.Li N.Li W.Li X.Li X.Li Y.Li Z.M.Li M.A.Lisa F.Liu H.Liu j.Liu T.Ljubicic W.j.Llope R.S.Longacre W.A.Love Y.Lu E.V.Lukashov X.Luo G.L.Ma Y.G.Mai D.P.Mahapatra R.Majka O.I.Mall L.K.Mangotra R.Manweiler S.Margetis C.Markert H.Masui H.S.Matis Yu.A.Matulenko D.MeDonald T.S.McShane A.Meschanin R.Milner N.G.Minaev S.Mioduszewski A.Mischke M.K.Mitrovski B.Mohanty M.M.Mondal B.Morozov D.A.Morozov M.G.Munhoz M Argonne National Laboratory Argonnellinois 60439USA Brookhaven National Laboratory UptonNew York 11973USA University of Califomia BerkeleyCaliformnia 94720USA University of California DavisCalifornia 95616USA University of Califormnia Los AngelesCalifomia 90095USA Universidade Estadual de Campinas Sao PauloBrazil University of Illinois at Chicago ChicagoIlinois 60607USA Creighton University OmahaNebraska 68178USA Czech Technical University in Prague FNSPEPrague11519Czech Republic Nuclear Physics Institute AS CR 25068 Rez/PragueCzech Republic University of Frankfurt FrankfurtGermany Institute of Physics Bhubaneswar 751005India Indian Institute of Technology MumbaiIndia Indiana University BloomingtonIndiana 47408USA Alikhanov Instiute for Theoretical and Experimental Physics MoscowRussia University of jammu Jammu 180001India joint Institute for Nuclear Research Dubna141980Russia Kent State University KentOhio 44242USA University of Kentucky LexingtonKentucky40506-0055USA Institute of Modern Physics LanzhouChina Lawrence Berkeley National Laboratory BerkeleyCalifornia 94720USA Massachusetts Institute of Technology CambridgeMA 02139-4307USA Mx-Planck-Institut fir Physik MunichGermany Michigan State University East LansingMichigan 48824USA Moscow Engineering Physics Institute Moscow Russia NIKHEF and Utrecht University AmsterdamThe Netherlands Ohio State University ColumbusOhio 43210USA Old Dominion University NorfolkVA23529USA Panjab University Chandigarh 160014India PennsyIvania State University University ParkPennsylvania 16802USA Institute of High Energy Physics ProtvinoRussia Purdue University West LafayetteIndiana 47907USA Pusan National University PusanRepublic of Korea University of Rajasthan Jaipur 302004India Rice University HoustonTexas 77251USA Universidade de Sao Paulo Sao PauloBrazil University of Science&Technology of China Hefei 230026.China Shandong University JinanShandong 250100China Shanghai Institute of Applied Physics Shanghai 201800Chi

Dihadron azimuthal correlations containing a high transverse momentum(pr)trigger particle are sensit-ive to the properties of the nuclear medium created at RHIC through the strong interactions occurring between the traversing parton and the medium,*** measurements revealed a strong modification to di-hadron azimuthal correlations in Au+Au collisions with respect to ptp and d+Au *** modification in-creases with the collision centrality,suggesting a path-length or energy density dependence to the je-quenching *** paper reports STAR measurements of dihadron azimuthal correlations in mid-central(20%-60%)Au+Au collisions at√^(S)NN=200 GeV as a function of the trigger particle's azimuthal angle relative to the event plane,Ф_(s)=|Ф_(t)-ψ_(Ep)|.The azimuthal correlation is studied as a function of both the trigger and associated particle *** subtractions of the combinatorial background and anisotropic flow,assuming Zero Yield At Minimum(ZYAM),are *** correlation results are first discussed with subtraction of the even harmonic(elliptic and quadrangu-lar)flow *** away-side correlation is strongly modifed,and the modification varies withФ_(s),with a double-peak structure for out-of-plane trigger *** near-side ridge(long range pseudo-rapidity△_(η)correla-tion)appears to drop with increasingФ_(s)while the jet-like component remains approximately *** correla-tion functions are further studied with the subtraction of odd harmonic triangular flow background arising from *** is found that the triangular flow,while responsible for the majority of the amplitudes,is not sufficient to explain theφs-dependence of the ridge or the away-side double-peak *** dropping ridge withФ_(s)could be attributed to aФ_(s)-dependent lliptie anisotropy;however,the physics mechanism of the ridge remains an open *** with aФ_(s)-dependent elliptic flow,the away-side correlation structure

关键词： relativistic heavy ion collisions dihadron correlations jet-medium interactions anisotropic flow background event plane

Challenges for beyond 5G:ultra-densification of radio access network

在线全文

学校读者我要写书评

暂无评论

通信学报 2020年第11期41卷 1-11页

作者： Fumiyuki Adachi Ryo takahashi Hidenori Matsuo Research Organization of Electrical Communication Tohoku UniversitySendai 980-8577Japan

Ultra-densification of radio access network(RAN)is a key to efficiently support the exponentially growing mobile data traffic in 5 G ***,extremely high frequency band like mm Wave band was utilized to solve the bandwidth shortage ***,untra-dense reusing the same radio resource produced severe *** the mm Wave link was very harsh due to frequent blockage by *** a new RAN architecture needed to be introduced to realize ultra-reliable communications in such a severe radio propagation *** architecture of distributed MIMO based RAN was ***,enhanced interference coordination(e IC)was ***,the effectiveness of distributed MIMO based RAN with e IC by computer simulation was showed.

关键词： 5G advanced systems distributed MIMO radio access network interference coordination cooperative signal transmission

On a New Geometric Constant Related to the Modulus of Smoothness of a Banach Space

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2014年第9期30卷 1526-1538页

作者： Yasuji takahashi Mikio KATO Department of System Engineering Okayama Prefectural University Department of Mathematics Faculty of EngineeringShinshu University

We shall introduce a new geometric constant A（X） of a Banach space X, which is closely related to the modulus of smoothness px （T）, and investigate it in relation with the constant As （X） by Baronti et al., the von Neumann-jordan constant CNj（X） and the james constant j（X）. A sequence of recent results on these constants as well as some other geometric constants will be strengthened and improved.

关键词： Constant A(X) von Neumann-jordan constant james constant modulus of smoothness modulus of convexity uniform non-squareness

Urban climate in the Tokyo metropolitan area in japan

在线全文

学校读者我要写书评

暂无评论

journal of Environmental Sciences 2017年第9期29卷 54-62页

作者： jun Matsumoto Fumiaki Fujibe Hideo takahashi Research Center for Climatology Department of Geography Tokyo Metropolitan University Department of Coupled Ocean-Atmosphere-Land Processes Research JAMSTEC

Long-term climate changes related with urbanization in Tokyo, japan, and recent temperature and heavy rainfall distribution in the Tokyo metropolitan area are reviewed. A relatively high temperature increase in annual mean temperature at the rate of 3.0°C/century was detected in Tokyo for the period 1901–2015. Some observational evidence showed the existence of both thermal and mechanical effects of urbanization on recent heavy rainfall occurrences, and modeling studies also support precipitation enhancement. Urban influences were recognized in other climatological elements, such as number of fog days, relative humidity, and wind circulation.

关键词： Heat island Cool island Heavy rainfall Fog Humidity Sea breeze

A sulfur–microporous carbon composite positive electrode for lithium/sulfur and silicon/sulfur rechargeble batteries

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2015年第6期25卷 612-621页

作者： Takuya takahashi Masaki Yamagata Masashi Ishikawa Department of Chemistry and Materials Engineering Faculty of ChemistryMaterials and BioengineeringKansai University

Sulfur is an advantageous material as a promising next-generation positive electrode material for high-energy lithium batteries due to a high theoretical capacity of 1672 m A h g 1although its discharge potential is somewhat modest:ca.2 V vs Li/***,a sulfur positive electrode has some crucial problems for practical use,which are mainly attributed to the dissolution of its intermediate products in charge–discharge *** order to resolve the dissolution problem of lithium polysulfide,we attempted to synthesize a sulfur–microporous activated carbon(AC) composite positive ***,we have systematically researched the battery performance of sulfur–microporous AC positive electrode with variations of electrolytes as well as negative electrodes,and found its promising positive electrode performance for a nextgeneration rechargeable battery.

关键词： Sulfur Micropore Ionic liquid Silicon Lithium-ion battery

Hand-holding and releasing between the anion and cation to change their macroscopic behavior in water

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Green Energy & Environment 2019年第2期4卷 127-130页

作者： Kosuke Kuroda Yumiko Shimada Kenji takahashi Faculty of Biological Science and Technology Institute of Science and Engineering Kanazawa University

Despite the similarity of ionic liquid and zwitterion, their some properties such as conductivity and hydrophobicity are different. Here we developed a novel phosphonium salt having a dynamic covalent bond between anion and cation, enabling reversible structural shift between free ion pair and zwitterion. With the phosphonium salt, control of the macroscopic phase behavior in aqueous solution, i.e. forming mono-or biphasic systems, upon exposure to an acid or base was reversibly achieved, based on the structural shift of the phosphonium salt. CO_2/N_2 bubbling reversibly changed the phase behavior as well as acid/base, leading to green separation systems.

关键词： Ionic liquid Zwitterion Phase separation Dynamic covalent bond