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Lateral migration of fault activity in Weihe basin

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Acta Seismologica Sinica(English Edition) 2004年第2期17卷 190-199页

作者： FENG xi-jie(冯希杰) DAI Wang-qiang(戴王强) Earthquake Administration of Shaanxi Province Xi''an 710068 China Earthquake Administration of Shaanxi Province Xi''an 710068 China

Lateral migration of fault activity in Weihe basin is a popular phenomenon and its characteristics are also typical. Taking the activity migrations of Wangshun Mountain piedmont fault toward Lishan piedmont fault and Weinan platform front fault, Dabaopi-Niujiaojian fault toward Shenyusi-xiaojiazhai fault, among a serial of NE-trending faults from Baoji city to Jingyang County as examples, their migration time and process are analyzed and discussed in the present paper. It is useful for further understanding the structure development and physiognomy evolution history of Weihe basin.

关键词： lateral migration fault activity Weihe basin

An Intrinsic Model for the Polarization Position Angle Swing Observed in QSO 1150+812

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Chinese Journal of Astronomy and Astrophysics 2004年第1期4卷 37-50页

作者： Shan-jieQian xi-ZhenZhang NationalAstronomicalObservatories ChineseAcademyofSciencesBeijing100012

The rapid polarization position angle swing of ~ 180° observed in QSO 1150+812 at 2cm by Kochenov and Gabuzda is quite a regular event. One interesting property of the event is that, during the time of the swing the polarized flux density remained almost constant. We suggest that such an event can be explained in terms of a relativistic thin shock propagating through a uniform helical magnetic field, giving rise to relativistic aberration effects as the transverse field component rotates. The model may also be applicable to other similar events in which variations in polarization are not accompanied by variations in total flux density.

关键词： radio continuum: galaxies polarization quasars: individual: QSO 1150+812

Numerical study of the natural frequency and mode shape of prototype Francis turbine runner

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Journal of Hydrodynamics 2022年第1期34卷 125-134页

作者： Wei Wang Ling-jiu Zhou xiang xia xi-jie Song Zheng-wei Wang Department of Energy and Power Engineering Tsinghua UniversityBeijing100084China College of Water Resources and Civil Engineering China Agricultural UniversityBeijing100083China

The prediction of the dynamic behavior of the structure is a key to ensure the safe and stable operation of the *** this paper,the acoustic fluid-structure coupling method is used to study the natural frequency and the mode shape of the prototype Francis turbine *** an added mass,the natural frequency of the runner in the water is *** added mass force mc is reduced under the cavitation,resulting in an increase of the natural frequency,but it is still much lower than the frequency in the *** the order number of the runner mode increases,the added mass force increases,and the frequency reduction rate *** 0ND to 4ND,the nodal lines on the upper crown of the runner gradually disappear,and the mode shape becomes more *** modal displacement D*in the circumferential direction of the runner and the outlet edge of the blade are selected to compare the structural mode shapes under different operating *** results show that the amplitude of D*in the circumferential direction of the runner gradually increases from the upper crown to the lower band of the runner,and the curve assumes a symmetrical distribution of sinusoidal waves,whose number is twice of that of the nodal lines of the *** D*value changes are caused by the added mass in the water,and it will further change under the cavitation *** means that the vibration form of the structure has *** will cause damages to the runner under the resonance conditions at different positions and in different degrees.

关键词： Runner natural frequencies mode shapes modal displacements acoustic fluid-structure coupling method

Inclusive γ(1S,2S,3S) photoproduction at the CEPC

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Chinese Physics C 2021年第2期45卷 240-245页

作者： xi-jie Zhan Jian-xiong Wang Institute of High Energy Physics(IHEP) Chinese Academy of Sciences(CAS)19B Yuquan RoadShijingshan DistrictBeijing100049China University of Chinese Academy of Sciences(UCAS) Chinese Academy of Sciences(CAS)19A Yuquanlu RoadShijingshan DistrictBeijing100049China

Inclusive γ(1S,2S,3S) photoproduction at the future Circular-Electron-Positron-Collider(CEPC)is studied,using the non-relativistic quantum chromodynamics(NRQCD)factorization *** the contributions from both direct and resolved photons,we present different distributions for the γ(1S,2S,3S) *** results suggest that there will be considerable events,implying that well measurements of the T photoproduction can be performed to further study heavy quarkonium physics at electron-positron colliders,in addition to hadron *** supplemental study is very important for clarifying the current situation regarding the heavy quarkonium production mechanism.

关键词： NRQCD heavy quarkonium photoproduction e^+e^-collider

Review of silicon-based alloys for lithium-ion battery anodes

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International Journal of Minerals,Metallurgy and Materials 2021年第10期28卷 1549-1564页

作者： Zhi-yuan Feng Wen-jie Peng Zhi-xing Wang Hua-jun Guo xin-hai Li Guo-chun Yan jie-xi Wang School of Metallurgy and Environment Central South UniversityChangsha 410083China Engineering Research Center of the Ministry of Education for Advanced Battery Materials Central South UniversityChangsha 410083China Hunan Provincial Key Laboratory of Nonferrous Value-Added Metallurgy Central South UniversityChangsha 410083China

Silicon(Si)is widely considered to be the most attractive candidate anode material for use in next-generation high-energy-density lithium(Li)-ion batteries(LIBs)because it has a high theoretical gravimetric Li storage capacity,relatively low lithiation voltage,and abundant ***,massive efforts have been exerted to improve its electrochemical *** some progress in this field has been achieved,a number of severe challenges,such as the element’s large volume change during cycling,low intrinsic electronic conductivity,and poor rate capacity,have yet to be *** to solve these problems have been attempted via the development of nanosized Si ***,reviews summarizing the work on Si-based alloys are ***,the recent progress related to Si-based alloy anode materials is *** problems associated with Si anodes and the corresponding strategies used to address these problems are first ***,the available Si-based alloys are divided into Si/Li-active and inactive systems,and the characteristics of these systems are *** special systems are also ***,perspectives and future outlooks are provided to enable the wider application of Si-alloy anodes to commercial LIBs.

关键词： silicon alloy anode lithium-ion battery

Quantitative evaluation of diffusion-weighted magnetic resonance imaging of focal hepatic lesions

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World Journal of Gastroenterology 2005年第41期11卷 6535-6537页

作者： xi-jie Sun xian-Yue Quan Fan-Heng Huang Yi-Kai Xu Imaging Center Affiliated Zhujiang Hospital of Southern Medical UniversityGuangzhou 510282 Guangdong Province China Imaging Center Affiliated Nanfang Hospital of Southern Medical University Guangzhou 510515 Guangdong Province China

AIM: To explore the quantitative analysis of diffusionweighted magnetic resonance imaging (DWMRI) in differential diagnosis of focal hepatic ***: DWMRI was performed in 149 hepatic lesions, including hepatocellular carcinoma (34 cases),hepatic metastases (37 cases), cavernous hemangioma (42 cases), hepatic cyst (36 cases). Apparent diffusion coefficient (ADC) values were evaluated using four different b values in different sequences. The ratio of ADC values of lesion/liver in hepatocellular carcinoma and hepatic metastases was also ***: The mean ADC values of hepatic lesions were as follows: hepatocellular carcinoma (0.95 ± 0.11) × 10-3 mm2/s, hepatic metastasis (1.13 ± 0.21)× 10-3 mm2/s, cavernous hemangioma (1.86±0.36)×10-3 mm2/s,hepatic cyst(3.14±0.31)×10-3 mm2/s. The ratio of ADC values in lesion/liver in hepatocellular carcinoma was 0.91 ±0.11, being significantly different from that in hepatic metastasis (1.21 ± 0.18, P＜ 0.05).CONCLUSION: ADC values and quantitative analysis of focal hepatic lesions are of significant values in differential diagnosis of focal hepatic lesions.

关键词： Diffusion-weighed magnetic resonance imaging Hepatic lesion Quantitative analysis

Polarization Position Angle Swings caused by Relativistic Effects

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Chinese Journal of Astronomy and Astrophysics 2003年第1期3卷 75-86页

作者： Shan-jie Qian and xi-Zhen ZhangNational Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 rqsj@*** National Astronomical Observatories CAS NAOC Beijing 100012 China

Polarization position angle swings of 180° observed in extragalactic radio sources are a regular behavior of variability in polarization. They should be due to some kind of physically regular process. We consider relativistic shocks which propagate through and `illuminate' regular configurations of magnetic field, producing polarization angle swing events. Two magnetic field configurations (force-free field and homogeneous helical field) are considered to demonstrate the results. It is shown that the properties of polarization angle swings and the relationship between the swings and variations in total and polarized flux density are critically dependent on the configuration of magnetic field and the dynamical behavior of the shock. In particular, we find that in some cases polarization angle swings can occur when the total and polarized flux densities only vary by a very small amount. These results may be useful for understanding the polarization variability with both long and short timescales observed in extragalactic radio sources.

关键词： radio continuum: galaxies polarization galaxies: magnetic fields

Cloning and characterization of the gene encoding an ubiquitin-activating enzyme E1 domain-containing protein of silkworm, Bombyx moil

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Insect Science 2010年第2期17卷 75-83页

作者： Ping Wu Mu-Wang Li Yun-Feng Jiang Zi-Sheng Wang xi-jie Guo Sericultural Research Institute Chinese Academy of Agricultural Sciences College of Biotechnology and Environmental Engineering Jiangsu University of Science and Technology Zhenjiang Jiangsu Province China

Bombyx mori cytoplasmic polyhedrosis virus （BmCPV） is one of the major viral pathogens for the silkworm. To date, the molecular mechanism of BmCPV invasion has been unclear. We cloned the full length complementary （c）DNA which encodes the ubiquitin-activating enzyme El-domain containing proteinl （UbE1DC1） ofBombyx mori by using suppression subtraefive hybridization （SSH） and rapid amplification of com- plementary （c）DNA ends （RACE）. The full-length eDNA of UbE1DClgene is 1 919 bp, consisting of a 100 bp 5＇ untranslated region, a 637 bp 3＇ untranslated region and an 1 182 bp open reading frame （ORF）, encoding a 393 amino acid protein. The protein contained the THiF_MoeB_hesA_family domain, an adenosine triphosphate binding site, which belongs to the family of ubiquitin-activating enzyme El. Reverse transcription - polymerase chain reaction analysis from the silkworm tissues, namely silk gland, hemo- cyte, fat body, gonad and midgut revealed that UbE1DC1 was expressed in all the five tissues. The real-time quantitative polymerase chain reaction analysis indicated that the relative expression of UbE1DC1 in the normal midgut was approximately 9.78-fold of that in the BmCPV-infected midgut. It is implicated that UbEIDCI may play an important role in the interaction between the host and BmCPV invasion.

关键词： Bombyx mori Cytoplasmic polyhedrosis virus midgut quantitative real-time PCR rapid amplification of eDNA ends suppression subtractive hybridization

Free autologous internal limiting membrane transplantation in the treatment of large macular hole

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International Journal of Ophthalmology(English edition) 2019年第5期12卷 848-851页

作者： Fei-Yan Ma Rui-jie xi Peng-Fei Chen Yu-Hua Hao Department of Ophthalmology Second Hospital of Hebei Medical University NIMO Ophthalmology Research Institute

We evaluated the clinical efficacy of free internal limiting membrane(ILM) flap transplantation for the treatment of large macular hole over 500 μm in 42 consecutive patients. Quantified evaluation of the post-operative macular anatomy restoration was performed by spectral-domain optical coherence tomography in the 12 mo follow-up. The results showed 41 eyes achieved successful closure(97.6%). Postoperative best corrected visual acuity, ellipsoid layer, and external limiting membrane disruption were significantly improved at all follow-up time points. The central foveal thickness was significantly higher at 1 mo. We concluded that free ILM flap transplantation proves to be effective to achieve anatomical and functional improvement for the treatment of large macular hole.

关键词： vitreoretinal disease macular hole internal limiting membrane vitrectomy