检索结果-南通市图书馆

Electromagnetically Induced Transparency in an Optomechanical System

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2011年第10期28卷 87-90页

作者： shu jing School of Electronic and Optical Engineering Nanjing University of Science and TechnologyNanjing 210094

We demonstrate a form of induced transparency enabled by the large gradient force between one optical and two mechanical *** tune the frequency of the mechanical flapping mode into resonance with the mechanical breathing mode to obtain the internal mechanical *** with all-photonic physical systems,the quantum optomechanical system exhibits a significantly longer lifetime.

关键词： mode transparency Electromagnetic

Left-Right Non-Linear Dynamical Higgs

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

Communications in Theoretical Physics 2016年第12期65卷 643-662页

作者： jing shu Juan Yepes State Key Laboratory of Theoretical Physics and Kavli Institute for Theoretical Physics China Institute of Theoretical Physics Chinese Academy of Sciences

All the possible CP-conserving non-linear operators up to the p^4-order in the Lagrangian expansion are analysed here for the left-right symmetric model in the non-linear electroweak chiral context coupled to a light dynamical Higgs. The low energy effects will be triggered by an emerging new physics field content in the nature, more specifically,from spin-1 resonances sourced by the straightforward extension of the SM local gauge symmetry to the larger local group SU(2)_L × SU(2)_R× U(1)_(B-L). Low energy phenomenology will be altered by integrating out the resonances from the physical spectrum, being manifested through induced corrections onto the left handed operators. Such modifications are weighted by powers of the scales ratio implied by the symmetries of the model and will determine the size of the effective operator basis to be used. The recently observed diboson excess around the invariant mass 1.8 TeV–2 TeV entails a scale suppression that suggests to encode the low energy effects via a much smaller set of effective operators.

关键词： left-right model nonlinear invariance CP symmetry SU(2)×SU(2)×U(1) effective Lagrangian Higgs couplings

Distributed Reduced-order Optimal Fusion Kalman Filters for Stochastic Singular Systems

在线全文

学校读者我要写书评

暂无评论

自动化学报 2006年第2期32卷 286-290页

作者： SUN shu-Li MA jing Department of Automation Heilongjiang University Harbin 150080

Based on the optimal fusion algorithm weighted by matrices in the linear minimum variance (LMV) sense, a distributed full-order optimal fusion Kalman filter (DFFKF) is given for discrete-time stochastic singular systems with multiple sensors, which involves the inverse of a high-dimension matrix to compute matrix weights. To reduce the computational burden, a distributed reduced-order fusion Kalman filter (DRFKF) is presented, which involves in parallel the inverses of two relatively low-dimension matrices to compute matrix weights. A simulation example shows the effectiveness.

关键词：多传感器信息融合 Kalman滤波随机奇异系统

Experimental study on pressure and aeration characteristics in stepped chute flows

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2015年第4期58卷 720-726页

作者： XU Wei Lin LUO shu jing ZHENG Qiu Wen LUO jing State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan University

The free flow on the step surfaces has received much attention for its representative body type,flow structure,water-air two phase flow,cavitation,and many complex *** experiments about the time-averaged pressure and aeration concentration distribution on the step surface show that the vertical plane of steps will inevitably experience negative pressure,which must rely on adequate aeration concentration to avoid cavitation ***,the self-aerated flow at the head section has a relatively low aeration concentration,and the concentration of the entire steps decreases with the increasing of weir head,the minimum appears in the vicinity of the corner,and the location is close to the minimum ***,it is necessary to set aerator in the upstream end of the step surfaces to avoid cavitation damage.

关键词： stepped spillway time-averaged pressure aerated flow cavitation erosion

A Kind of Atomic Coherent State as a Two-Mode Squeezed State

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2009年第9期52卷 511-516页

作者： MA Shan-Jun WANG shu-jing College of Physics and Communication Electronics Jiangxi Normal University Nanchang 330022 China

We find that a kind of atomic coherent state, formed as exp[ ξJ＋-ξJ-]｜00〉,when the SU（2） generators J± are taken as Fan＇s form J＋=（1/2）（α1-α2）（α1-α2）,J-=（1/2）（α1＋α2）（α1＋α2）,and J0=（1/2）（α1α2-α1α2）,is simultaneously a two-mode squeezed state. We analyse this squeezed state＇s physical properites, such as the cross- correlation function, the Wigner function, and its marginal distribution as well as the Husimi function.

关键词： exponential operator cross-correlation function Wigner function Husimi function

Studies on the Rice LEAF INCLINATION1 （LC1）, an IAA-amido Synthetase, Reveal the Effects of Auxin in Leaf Inclination Control

在线全文

学校读者我要写书评

暂无评论

Molecular Plant 2013年第1期6卷 174-187页

作者： shu-Qing Zhao jing-jing Xiang Hong-Wei Xue National Key Laboratory of Plant Molecular Genetics institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences ChineseAcademy of Sciences Shanghai 200032 China

The angle of rice leaf inclination is an important agronomic trait and closely related to the yields and archi- tecture of crops. Although few mutants with altered leaf angles have been reported, the molecular mechanism remains to be elucidated, especially whether hormones are involved in this process. Through genetic screening, a rice gain-of- function mutant leaf inclination1, Icl-D, was identified from the Shanghai T-DNA Insertion Population （SHIP）. Phenotypic analysis confirmed the exaggerated leaf angles of Icl-D due to the stimulated cell elongation at the lamina joint. LC1 is transcribed in various tissues and encodes OsGH3-1, an indole-3-acetic acid （IAA） amido synthetase, whose homolog of Arabidopsis functions in maintaining the auxin homeostasis by conjugating excess IAA to various amino acids. Indeed, recombinant LC1 can catalyze the conjugation of IAA to Ala, Asp, and Asn in vitro, which is consistent with the decreased free IAA amount in Icl-D mutant. Icl-D is insensitive to IAA and hypersensitive to exogenous BR, in agreement with the microarray analysis that reveals the altered transcriptions of genes involved in auxin signaling and BR biosynthesis. These results indicate the crucial roles of auxin homeostasis in the leaf inclination control.

关键词： rice leaf inclination auxin GH3.

Muon spinning its way to new physics

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

Frontiers of physics 2021年第6期16卷 79-81页

作者： Kim Siang Khaw Liang Li jing shu Tsung-Dao Lee Institute Shanghai Jiao Tong UniversityShanghai 200240China School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China

The first results from the Fermilab Muon g–2 Experiment shed lights on the mystery surrounding the magnetic anomaly of the *** could become a window into a new era of particle physics.

关键词： Fermi particle spinning

The broad-spectrum adaptations of hominins in the later period of Late Pleistocene of China—Perspectives from the zooarchaeological studies

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2016年第8期59卷 1529-1539页

作者： ZHANG shuangQuan ZHANG Yue LI jing shu GAO Xing Key Laboratory of Vertebrate Evolution and Human Origins Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of Sciences

During the climatic fluctuations in the late Late Pleistocene, hominins in China had experienced some significant changes and adaptations in terms of subsistence strategies. Based on the zooarchaeological analyses of the faunal remains from the shuidougou site of North China and the Ma'anshan site of South China, the present study demonstratively indicates that the broad-spectrum diet and its closely-related resource intensification for hominins were already at their places roughly at 33–35 cal ka BP. Compared to hominins of earlier period, who would have preferentially exploited large and medium-sized ungulates, hunter-gathers at later period had otherwise incorporated more small-sized animals(especially the quick ones, such as birds and hares) into their diet. Meanwhile, hominins of the later time had also greatly accelerated extractions and exploitations of the nutritional yields from the large and medium-sized animals. However, it seems clear from the current study that there was significant difference regarding the potential mechanisms for the broad-spectrum adaptations of hominins in the late Late Pleistocene of China.

关键词： Late Late Pleistocene Paleolithic Taphonomy Zooarchaeology Broad-spectrum revolution Resource intensification

Syntheses, Crystal Structures and Antimicrobial Activities of Vanadium(V) Complexes with Similar Tridentate Hydrazone Ligands

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2015年第6期34卷 885-893页

作者： LI Ke LI shu-jing YAO Xin-Jian NIU jing-jing QIU Xiao-Yang School of Chemistry & Chemical Engineering Zhoukou Normal University Department of Chemistry Shangqiu Normal University

Two hydrazone ligands （E）-N＇-（2-hydroxy-5-methoxybenzylidene）-2-hydroxybenzo- hydrazide （HLa） and （E）-N＇-（3,5-dichloro-2- hydroxybenzylidene）-4-methoxybenzohydrazide （HLb） were prepared and characterized by IR, UV-Vis and 1H NMR spectra. Based on the hydrazone ligands, two new structurally similar vanadium（V） complexes, [VOLaL].CH3OH （1） and [vOLbL] （2）, where L is the monoanionic form of benzohydroxamic acid （HL）, were prepared and characterized by IR and UV-Vis spectra, and single-crystal X-ray diffraction. Complex 1 crystallizes as the monoclinic space group P21/n, with a = 7.5208（10）, b = 15.490（2）, c = 20.8929（18） A, β = 96.373（2）°, V = 2418.9（5） A3, Z = 4, R = 0.0831, wR = 0.2607 and GOOF = 1.061. Complex 2 crystallizes as the monoclinic space group P21/c, with a = 11.8577（18）, b = 16.468（2）, c = 12.2288（18） A, β = 106.064（2）°, V= 2294.7（6） A3, Z = 4, R= 0.0741, wR= 0.1745 and GOOF= 1.014. X-ray analysis indicates that the complexes are mononuclear vanadium （V） species, with the V atoms located in the octahedral coordination. The hydrazone ligands and the complexes were evaluated for their antibacterial （Bacillus subtilis, Staphylococcus aureus, Escherichia coli, and Pseudomonas fluorescence） and antifungal （Candida albicans and Aspergillus niger） activities by MTT （3-（4,5-dimethylthiazol-2-yl）-2,5-diphenyl tetrazolium bromide） method.

关键词： hydrazone vanadium complex mononuclear complex crystal structure antimicrobial activity