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UNSTEADY INTERFACIAL WAVES DUE TO SINGULARITIES IN TWO SEMI-INFINITE INVISCID FLUIDS

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Journal of Hydrodynamics 2005年第6期17卷 730-736页

作者： LU Dong-qiang WEI Gang you yun-xiang The State Key Laboratory of Ocean Engineering Shanghai Jiaotong University Shanghai 200030 China Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072 China School of Naval Architecture Ocean and Civil Engineering Shanghai Jiaotong University Shanghai200030 China

The generation of unsteady interfacial gravity waves by a singularity immersed in two semi-infinite fluids was analytically investigated in detail by the methods of integral transform and of stationary-phase analysis. The fluids were assumed to be initially stationary, immiscible, inviscid and incompressible. The disturbed flows, generated by an impulsive and oscillatory source/dipole immersed above or be neath the interface, were governed by the *** equations. The kinematic and dynamic boundary conditions on the interface were linearized for the small-amplitude waves. By means of the stationary phase analysis on the exact integral form solutions, the asymptotic representations for the interracial waves were derived for large time with a fixed distance to time ratio. The relation between a submerged singularity and a sur face pressure point was discussed. It is found that the local wavelength and the local wave period of the interracial waves are elongated in comparison with those of free-surface waves for a single fluid.

关键词： interfacial waves singularity two-fluid system asymptotic representation

A Survey on Technologies and Challenges of LTE-U

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Computer Systems Science & Engineering 2022年第4期41卷 321-337页

作者： Tong Gan shi-you Wang qiang Ma Yi-Dong Jia yun-yun Ma Beijing Metro Consultancy Corporation Ltd. Beijing100071China School of Computer and Communication Engineering University of Science and Technology BeijingBeijing100083China School of Electronic Electrical and Systems Engineering University of BirminghamBirminghamB152TTUnited Kingdom

The rapid growth of mobile data trafﬁc has caused great pressure on the limited spectrum resources,and there must be some better methods to deal with this *** innovative technology of Long-Term Evolution(LTE)using the unlicensed spectrum,known as LTE-Unlicensed(LTE-U),has been proposed to effectively alleviate the shortage of authorized band ***-U has explored a lot of potential capacity in mobile communication systems with limited authorized spectrum resources,and improved the spectrum utilization of unauthorized frequency ***,LTE-U is still facing challenges in its *** this paper,we summarize the key features of LTE-U and the coex-istence of LTE-U with Wi-Fi in the unlicensed *** analyze the key technologies(including carrier aggregation,HARQ,interference cancelation,and centralized scheduling),the operating modes and deployment scenarios(including carrier aggregation LTE-U,duty cycle LTE-U,and standalone LTE-U),and the advantages(including anchored LTE-U and Standalone LTE-U scenarios),as well as main technical *** then address the different management mechanisms of LTE-U and Wi-Fi(including the differences between the MAC layer and physical layer),the types of coexistence technology classiﬁcation(including channel separation and channel sharing technologies),and directions for future *** hope that this comprehensive survey spurs further research in this promising area.

关键词： LTE-U unlicensed spectrum coexistence technology

Isolation and Manipulation of Quantitative Trait Loci for Disease Resistance in Rice Using a Candidate Gene Approach

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Molecular Plant 2008年第5期1卷 786-793页

作者： Ke-Ming Hu De-yun Qiu xiang-Ling Shen xiang-Hua Li shi-ping Wang National Key Laboratory of Crop Genetic Improvement National Center of Plant Gene Research (Wuhan) Huazhong Agricultural University Wuhan 430070 China

Bacterial blight caused by Xanthomonas oryzae pv. oryzae and fungal blast caused by Magnaporthe grisea result in heavy production losses in rice, a main staple food for approximately 50% of the world＇s population. Application of host resistance to these pathogens is the most economical and environment-friendly approach to solve this problem. Quantitative trait loci （QTLs） controlling quantitative resistance are valuable sources for broad-spectrum and durable disease resistance. Although large numbers of QTLs for bacterial blight and blast resistance have been identified, these sources have not been used effectively in rice improvement because of the complex genetic control of quantitative resistance and because the genes underlying resistance QTLs are unknown. To isolate disease resistance QTLs, we established a candidate gene strategy that integrates linkage map, expression profile, and functional complementation analyses. This strategy has proven to be applicable for identifying the genes underlying minor resistance QTLs in rice-Xoo and rice-M, grisea systems and it may also help to shed light on disease resistance QTLs of other cereals. Our results also suggest that a single minor QTL can be used in rice improvement by modulating the expression of the gene underlying the QTL. Pyramiding two or three minor QTL genes, whose expression can be managed and that function in different defense signal transduction pathways, may allow the breeding of rice cultivars that are highly resistant to bacterial blight and blast.

关键词： bacterial blight blast Oryza sativa quantitative resistance QTL.

Comprehensive bibliometric analysis of pharmacotherapy for bipolar disorders:Present trends and future directions

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World Journal of Psychiatry 2025年第1期15卷 153-167页

作者： Bo-Fan Chen Li Liu Fang-Zhen Lin Hai-Min Zeng Hai-qiang Huang Chun-Fang Zhang Cong-Cong Liu xiang Chen Jie Peng yun-Fa Wang Zhi-Lin Wang Bin Chen De-Le Liu yun Liu Zheng-Zheng Li Xin-Xing Zeng The Second Affiliated Hospital Jiangxi Medical CollegeNanchang UniversityNanchang 330006Jiangxi ProvinceChina The Second Clinical Medical College Jiangxi Medical CollegeNanchang UniversityNanchang 330006Jiangxi ProvinceChina Department of Rehabilitation Medicine The Second Affiliated HospitalJiangxi Medical CollegeNanchang UniversityNanchang 330006Jiangxi ProvinceChina Jiangxi Provincial People’s Hospital The First Affiliated Hospital of Nanchang Medical CollegeNanchang 330006Jiangxi ProvinceChina Department of Psychiatry Jiangxi Mental HospitalHospital of Nanchang UniversityNanchang UniversityNanchang 330029Jiangxi ProvinceChina

BACKGROUND Bipolar disorder(BD)is a severe mental illness characterized by significant mood *** drug treatment modalities are crucial for managing *** To analyze the current status and future trends of global research on BD drug treatment over the last *** The Web of Science Core Collection database spanning from 2015 to 2024 was utilized to retrieve literature related to BD drug treatment.A total of 2624 articles were *** visualization and analysis were conducted using CiteSpace,VOSviewer,Pajek,Scimago Graphica,and R-studio bibliometrix to identify RESULTS The United States,China,and the United Kingdom have made the most significant contributions to research on BD drug treatment and formed notable research collaboration *** University of Pittsburgh,Massachusetts General Hospital,and the University of Michigan have been identified as the major research institutions in this *** Journal of Affective Disorders is the most influential journal.A keyword analysis revealed research hotspots related to clinical symptoms,drug efficacy,and genetic mechanisms.A citation analysis identified the management guidelines published by Yatham et al in 2018 as the most cited *** This study provides a detailed overview of the field of BD drug treatment,highlighting key contributors,research hotspots,and future *** study findings can be employed as a reference for future research and policymaking,which may enable further development and optimization of BD pharmacotherapy.

关键词： Bipolar disorder Drug treatment Bibliometric analysis Visualization Mental disorder

New progress in endoscopic treatment of esophageal diseases

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World Journal of Gastroenterology 2013年第41期19卷 6962-6968页

作者： ping-Hong Zhou qiang shi yun-shi Zhong Li-Qing Yao Endoscopy Center Zhongshan HospitalFudan University

The technique of endoscopic submucosal dissection(ESD),which was developed for en bloc resection of large lesions in the stomach,has been widely accepted for the treatment of the entire gastrointestinal *** minimally invasive endoscopic therapies based on ESD have been developed *** submucosal excavation,submucosal tunneling endoscopic resection and laparoscopic-endoscopic cooperative surgery have been used to remove submucosal tumors,especially tumors which originate from the muscularis propria of the digestive *** endoscopic myotomy has recently been described as a scarless and less invasive surgical myotomy option for the treatment of *** benefit from minimally invasive endoscopic *** article,in the highlight topic series,provides detailed information on the indications and treatments for esophageal diseases.

关键词： Endoscopic submucosal dissection Endoscopic treatment Esophageal disease Indication Treatment

Prototype of single-event effect localization system with CMOS pixel sensor

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Nuclear Science and Techniques 2022年第11期33卷 10-20页

作者： Jun Liu Zhuo Zhou Dong Wang shi-qiang Zhou xiang-Ming Sun Wei-ping Ren Bi-Hui you Chao-Song Gao Le Xiao ping Yang Di guo Guang-Ming Huang Wei Zhou Cheng-Xin Zhao Min Wang PLAC Key Laboratory of Quark&Lepton Physics(MOE)Central China Normal UniversityWuhan 430079China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China

The single-event effect(SEE) is a serious threat to electronics in radiation environments. The most important issue in radiation-hardening studies is the localization of the sensitive region in electronics to the SEE. To solve this problem, a prototype based on a complementary metal oxide semiconductor(CMOS) pixel sensor, i.e., TopmetalM, was designed for SEE localization. A beam test was performed on the prototype at the radiation terminal of the Heavy Ion Research Facility in Lanzhou(HIRFL). The results indicated that the inherent deflection angle of the prototype to the beam was 1.7°, and the angular resolution was 0.6°. The prototype localized heavy ions with a position resolution of 3.4 μm.

关键词： Single-event effect Radiation resistant Topmetal-M

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两层流体中水波与垂直圆柱浮体的相互作用

上海交通大学学报 2007年第9期41卷 1460-1464页

作者：尤云祥石强魏岗缪国平上海交通大学船舶海洋与建筑工程学院上海200030

基于特征函数匹配理论,导出了作用在垂直圆柱浮体上波浪力的计算公式.对于两层流体,除了表面波模态的波浪力外,还有内波模态的波浪力,这与单层流体的情况是不同的.对所建立的求解模型进行了数值计算分析.结果表明,在某个频率范围内,流... 详细信息

基于特征函数匹配理论,导出了作用在垂直圆柱浮体上波浪力的计算公式.对于两层流体,除了表面波模态的波浪力外,还有内波模态的波浪力,这与单层流体的情况是不同的.对所建立的求解模型进行了数值计算分析.结果表明,在某个频率范围内,流体的分层效应对垂直圆柱浮体的波浪力有一定影响.

关键词：两层流体圆柱浮体表面波内波波浪力

The expression and binding properties of the rice WRKY68 protein in the Xa21-mediated resistance response to Xanthomonas oryzae pv. Oryzae

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Journal of Integrative Agriculture 2016年第11期15卷 2451-2460页

作者： YANG Shuo ZHOU Liang miao Liu-yang shi Jia-nan SUN Cai-qiang FAN Wei LAN Jin-ping CHEN Hao LIU Li-juan DOU shi-juan LIU guo-zhen LI Li-yun College of Life Sciences Hebei Agricultural University Baoding 071001 P.R. China Quantum Design China Beijing 100027 P.R.China Beijing Protein Innovation Co. Ltd. Beijing 101318 P.R.China

Plant WRKY transcription factors are involved in various physiological processes, including biotic and abiotic stress responses, as well as developmental processes. In this study, the expression patterns of the WRKY68 protein during interactions between rice 4021 containing the bacterial blight resistance gene Xa21 and Xanthomonas oryzae pv. oryzae（Xoo） were investigated. A possible modified form of the WRKY68 protein appeared in the Xa21-mediated disease resistance response, and its expression levels were similar in compatible and incompatible responses, but differed significantly from that of the mock control treatment, suggesting that WRKY68 may be involved in the bacterial blight response in rice. To further understand WRKY68＇s roles in the resistance signaling pathway, WRKY68 recombinant protein was expressed in Escherichia coli and a microscale thermophoresis analysis was performed to investigate the interactions between WRKY68 and cis-elements in crucial pathogenesis-related（PR） genes. The results showed that the WRKY68 protein binds to W-boxes in the PR1 b promoter region, with an apparent dissociation constant of 25 nmol L–1, while the binding between WRKY68 and PR10 a was W-box independent. The results suggested that a possible modified form of the WRKY68 protein was induced during the interaction between rice and Xoo, which then regulated the activity of the downstream PR genes by binding with the W-boxes in the PR1 b gene＇s promoter region. Moreover, the constitutive transcription of the WRKY68 gene in dozens of rice tissues and the expression of the WRKY68 protein in leaves during all growth stages suggests that WRKY68 plays important roles in rice during normal growth processes.

关键词： rice bacterial blight WRKY transcription factor W-box Western blot microscale thermophoresis

MECHANICAL AND THERMAL PROPERTIES OF NANOSIZED TITANIUM DIOXIDE FILLED RIGID POLY(VINYL CHLORIDE)

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Chinese Journal of Polymer Science 2013年第2期31卷 325-332页

作者： yun-xiang Zhang 宋义虎 qiang Zheng Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education Department of PolymerScience and Engineering Zhejiang University

Nano-sized rod-like titanium dioxide （TiO2） filled rigid poly（vinyl chloride）（PVC） nanocomposites were prepared by using injection-molding method. Vicat, Charpy impact and tensile tests as well as thermogravimetric and dynamic mechanical analyses were used to characterize the structure and properties of the nanocomposites. The results showed that nano-TiO2 could improve Vicat softening temperature and also improve thermal stability of PVC during the stages of dehydrochlorination and formation of carbonaceous conjugated polyene sequences, which can be ascribed to restriction of the nanoparticles on the segmental relaxation as being evidenced by raises in glass transition and β-relaxation temperatures of PVC upon filling TiO2. Addition of TiO2 nanoparticles less than 40 phr （parts per hundreds of resin） could significantly improve impact strength of the composites while the TiO2 agglomeration at high contents leads to a reduction in impact toughness.

关键词： Poly(vinyl chloride) (PVC) Titanium dioxide (TiO2) Thermal property Mechanical property Impact strength.