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the ‘t Hooft Coupling and Baryon Mass Splitting in the Large-N_c Quark Model

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Chinese Physics Letters 2015年第11期32卷 26-30页

作者：贾多杰张甲申 Institute of theoretical Physics College of Physics and Electronic EngineeringNorthwest Normal University

We study the ＇t Hooft coupling gt and the mass splitting of the ground-state baryons in terms of the large Noinspired quark model, by which the Hartree wavefunctions of light quarks are obtained. By fitting the spectra of decuplet and octet baryons, we obtain the ＇t Hooft coupling gt to be around 1.57. We generalize the scenario to the case of heavy baryons, such as Ac, gt values which does not deviate much from 1.57, as well as to the case of mesons with 9t far from that for baryons. the consequence is discussed.

关键词： QCD the t Hooft Coupling and Baryon Mass Splitting in the Large-N_c Quark Model

the mechanism for the impact of sea surface temperature anomaly on the ridgeline surface of Western Pacific

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Science China Earth Sciences 2009年第11期52卷 1864-1870页

作者： CAO Jie YANG RuoWen YOU YaLei HUANG Wei Department of Atmospheric Science Yunnan UniversityKunming 650091China Climate Center of Yunnan Province Kunming 650034China

Based on the atmospheric circulation data provided by ECMWF and the sea surface temperature data by NOAA, we studied the mechanism for the impact of sea surface temperature anomaly on the ridgeline surface of western Pacific using an improved high truncated spectral model. Our results show that the wave-wave interaction and the wave-mean flow interactions are weaker in the inner dynamic process of atmospheric circulation, when atmospheric circulation is forced by the sea surface temperature of El Ni-o pattern. With the external thermal forcing changed from winter to summer pattern, the range of ridgeline surface of western Pacific moving northward is smaller, which causes the ridgeline surface of western Pacific on south of normal. On the contrary, the wave-wave interaction and the wave-mean flow interaction are stronger, when atmospheric circulation is forced by the sea surface temperature of La Ni-a pattern. With the external thermal forcing turning from winter to summer pattern, the ridgeline surface of western Pacific shifts northward about 19 latitude degrees, which conduces the ridgeline surface of western Pacific on north of normal. After moving to certain latitude, the ridgeline surface of western Pacific oscillates with the most obvious 30-60 d period and the 4°-7° amplitude. It is one of the important reasons for the interannual variation of ridgeline surface of Western Pacific that the at- mospheric inner dynamical process forced out by different sea surface temperature anomaly pattern is different.

关键词： sea surface temperature anomaly ridgeline surface of the Western Pacific wave-wave interaction wave-mean flow interaction

the Influence of Water Level Change in Slope Stability of Earth Dam

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上海交通大学学报 2004年第Z2期38卷 217-222页

作者： Xiao Zheng-hua Han Bo Liao Hong-jian Gao Xiao-yu Department of Civil Engineering Xi''an Jiaotong University Xi''an710049 China College of Architectural Engineering Xinjiang University Urumqi830008 China Department of Civil Engineering Xi''an Jiaotong University Xi''an710049 China Department of Civil Engineering Xi''an Jiaotong University Xi''an710049 China Department of Civil Engineering Xi''an Jiaotong University Xi''an710049 China

the analysis of seepage flow and slope stability to earth dam in water level change is performed. FEM is used to analyzing the influence of percolation and the results including the pore water head of any point, seepage discharge and so on are obtained. the method of slices is introduced to calculating the slope stability of the earth dam. Through an example it is separately discussed the influence of seepage flow when water level is changed in earth dam slope and the effects of percolation in the stability of the earth dam slope. Some helpful conclusions are *** can be making the best of the tow methods and the results can be used in engineering for reference.

关键词： seepage flow stability factor FEM the method of Bishop

the 2D InSe/WS2 Heterostructure with Enhanced Optoelectronic Performance in the Visible Region

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Chinese Physics Letters 2019年第9期36卷 41-45页

作者： Lu-Lu Yang Jun-Jie Shi Min Zhang Zhong-Ming Wei Yi-Min Ding Meng Wu Yong He Yu-Lang Cen Wen-Hui Guo Shu-Hang Pan Yao-Hui Zhu Physics Department Beijing Technology and BusinessUniversityBeijing100048 State Key Laboratory forArtificialMicrostructures and Mesoscopic Physics School of PhysicsPekingUniversityBeijing100871 College of Physics and Electronic Information Inner Mongolia NormalUniversityHohhot010022 State Key Laboratory of Superlattices and Microstructures Institute of Semicond uctorsChinese Academy of Sciences&College of Materials Science andOpto ElectronicTechnologyUniversity of Chinese Academy of SciencesBeijing100083

Two-dimensional(2D)InSe and WS2 exhibit promising characteristics for optoelectronic ***,they both have poor absorption of visible light due to wide bandgaps:2D InSe has high electron mobility but low hole mobility,while 2D WS2 is on the *** propose a 2D heterostructure composed of their monolayers as a solution to both *** first-principles calculations show that the heterostructure has a type-Ⅱband alignment as ***,the bandgap of the heterostructure is reduced to 2.19 eV,which is much smaller than those of the *** reduction in bandgap leads to a considerable enhancement of the visible-light absorption,such as about fivefold(threefold)increase in comparison to monolayer InSe(WS2)at the wavelength of 490 ***,the type-Ⅱ band alignment also facilitates the spatial separation of photogenerated electron-hole pairs;i.e.,electrons(holes)reside preferably in the InSe(WS2)*** a result,the two layers complement each other in carrier mobilities of the heterostructure:the photogenerated electrons and holes inherit the large mobilities from the InSe and WS2 monolayers,respectively.

关键词： Se CBM the 2D InSe/WS2 Heterostructure with Enhanced Optoelectronic Performance in the Visible Region

the advanced South Asian monsoon onset accelerates lake expansion over the Tibetan Plateau

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Science Bulletin 2019年第20期64卷 1486-1489页

作者： Yong Liu Huopo Chen Guoqing Zhang Jianqi Sun Huijun Wang Nansen-Zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing100029China Joint Laboratory of Climate and Environment Change Chengdu University of Information TechnologyChengdu610225China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University for Information Science and TechnologyNanjing210044China Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of SciencesBeijing100101China University of Chinese Academy of Sciences Beijing100049China

the rapid expansion of lake area in the Tibetan Plateau(TP)has attracted a considerable amount of concern in recent *** evidence has suggested that climate warming and the cryosphere change are the most prominent contributors to lake *** widespread changes in lake area result from a combination of increased precipitation,melting glaciers,permafrost degradation,and changes in other components of terrestrial ***,debate remains as to whether melting glaciers or increased precipitation have a greater impact on lake *** topography and limited datasets hinder the ability to perform extensive research,and there is currently no definitive conclusion on the issue.

关键词： China the advanced South Asian monsoon onset accelerates lake expansion over the Tibetan Plateau

the　photon　theory　hypothesis　about　photon　tunneling　microscope＇s　subwavelength　resolution

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光电子·激光 1996年第4期7卷 236-239+259页

作者： Yanbin Zhu Junfu Ma(Laser Li fe Science Institute, South China Normal University, Guangzhou 510631,P.R.China) 华南师范大学激光生命科学所广东广州

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关键词： tunneling hypothesis microscope about resolution subwavelength theory the photon

the spatiotemporal evolution of EGFR C797S mutation in EGFR-mutant non-small cell lung cancer:opportunities for third-generation EGFR inhibitors re-challenge

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Science Bulletin 2019年第8期64卷 499-503页

作者： Yi-Chen Zhang Qing Zhou Zhi-Hong Chen Ming-Feng Zhang Jin-Ji Yang Hai-Yan Tu Xu-Chao Zhang Chong-Rui Xu Hong-Hong Yan Xiao-Xiao Peng Xiao-Yan Bai Shao-Kun Chuai Jun-Yi Ye Yi-Long Wu the Second School of Clinical Medicine Southern Medical University Guangdong Lung Cancer Institute Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences Burning Rock Biotech

Third-generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) have demonstrated impressive activity in EGFR T790M-positive non-small cell lung cancer (NSCLC) progressed from prior EGFR-TKI... 详细信息

关键词： cis the spatiotemporal evolution of EGFR C797S mutation in EGFR-mutant non-small cell lung cancer:opportunities for third-generation EGFR inhibitors re-challenge

the Early Jurassic magmatism in northern Guangdong Province, southeastern China: Constraints from SHRIMP zircon U-Pb dating of Xialan complex

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Science China Earth Sciences 2009年第4期52卷 471-483页

作者： YU XinQi DI YongJun WU GanGuo ZHANG Da ZHENG Yong DAI YanPei State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesBeijing 100083China Key Laboratory of Lithosphere Tectonics and Lithoprobing Technology of Ministry of Education China University of GeosciencesBeijing 100083China

This paper reports SHRIMP zircon U-Pb ages of 196±2 Ma for granite, and 195±1 Ma for gabbro from the Xialan complex in the Meizhou area, northern Guangdong Province. these results shed new light on the calm stage of magmatic activity in southeastern China during 200-180 Ma, and revealed that the back-arc extension induced by the subduction of the western Pacific plate may have begun at 195 Ma at least. Field observation on the fresh outcrops allows us to recognize some features formed by magma mixing. A part of the gabbro has a fine-grained rim of 20-30 cm at the margin, and thins gradually to-ward the granite; numerous dark fine-grained to microcrystalline dioritic enclaves developed in the granite. these enclaves vary in shape and size, dark minerals concentrated at the margin of enclaves, and the contact between enclaves and host rock is either obvious or obscure, or gradational. In addi-tion, needle-shaped apatites are included in the enclaves. the REE patterns of gabbros, as well as the trace element patterns, are generally consistent with those of granitic rocks. the above characters further suggest that in the Early Jurassic the injection of basic magma had melted deep continental crust and produced acidic magma, and the Xialan complex was produced by the mixing of them.

关键词： Xialan complex SHRIMP zircon U-Pb ages magma mixing the Early Jurassic Meizhou northern Guangdong Province

Study on the Effects of Flow in the Volute Casing on the Performance of a Sirocco Fan

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Journal of thermal Science 2004年第3期13卷 199-206页

作者： Tsutomu ADACHI Naohiro SUGITA Satoshi OHOMORI Faculty of Engineering Osaka Sangyo University 3-1-1 Nakagaito Daito Osaka JapanFaculty of Engineering Osaka Sangyo University 3-1-1 Nakagaito Daito Osaka JapanSanki Engineering Corporation Ltd.

the flow at the exit from the runner blade of a centrifugal fan with forward curved blades (a sirocco fan) sometimes separates and becomes unstable. We have conducted many researches on the impeller shape of a sirocco fan, proper inlet and exit blade angles were considered to obtain optimum performance. In this paper, the casing shape were decided by changing the circumferential angle, magnifying angle and the width, 21 sorts of casings were used. Performance tests, inner flow velocity and pressure distributions were measured as well. Computational fluid dynamic calculations were also made and compared with the experimental results. Finally, the most suitable casing shape for best performance is considered.

关键词： sirocco fan fan flow measurement flow in the casing CFD.