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内部缺陷对高压直流电缆电场分布影响的有限元分析

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南方电网技术 2015年第10期9卷 83-91页

作者：何淼 george Chen Paul l.lewin 南安普顿大学

高压直流电缆实际运行过程中可能会有缺陷出现,使得电缆内部电场分布发生畸变,加速绝缘材料的老化。运用有限元分析的方法,对直流电缆电场分布进行了二维和三维建模和仿真分析,研究了不同电缆绝缘层温差、缺陷位置及尺寸情况下电缆中单... 详细信息

高压直流电缆实际运行过程中可能会有缺陷出现,使得电缆内部电场分布发生畸变,加速绝缘材料的老化。运用有限元分析的方法,对直流电缆电场分布进行了二维和三维建模和仿真分析,研究了不同电缆绝缘层温差、缺陷位置及尺寸情况下电缆中单个球形缺陷对周围绝缘材料的影响,得到了较为通用的直流电缆缺陷对电场畸变的计算公式。研究发现三维仿真更加适合对缺陷进行研究,稳态下缺陷对电场的加强决定于材料的电导率。

关键词：高压直流电缆稳态内部缺陷有限元分析电场加强电场反转电导率

Six-year trends and intersectional correlates of meeting 24-Hour Movement Guidelines among South Korean adolescents:Korea Youth Risk Behavior Surveys,2013-2018

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Journal of Sport and Health Science 2023年第2期12卷 255-265页

作者： Eun Young lee Asaduzzaman Khan Riaz Uddin Eva lim lauren george School of Kinesiology and Health Studies Queen’s UniversityKingstonON K7L3N6Canada Department of Gender Studies Queen’s UniversityKingstonON K7L3N6Canada School of Health and Rehabilitation Sciences The University of QueenslandBrisbaneQLD 4072Australia Active Healthy Kids Bangladesh(AHKBD) Dhaka 1206Bangladesh Institute for Physical Activity and Nutrition(IPAN) School of Exercise and Nutrition SciencesDeakin UniversityGeelongVIC 3220Australia Faculty of Health Sciences Queen’s UniversityKingstonON K7L3N6Canada

Background:Grounded in intersectionality theory,this study examined the 6-year prevalence trend and correlates in meeting Canada’s 24-Hour Movement Guidelines(Guidelines hereafter)in a nationally representative adolescent samples of South Korea(officially the Republic of Korea).Methods:Self-reported,annually repeated cross-sectional data collected between 2013 and 2018 were used(n=372,433,12-17 years old,47.9%females).Adolescents were categorized as meeting or not meeting different sets of physical activity,screen time(ST),and sleep recommendations within the Guidelines,separately for weekdays and weekend *** correlates included sex and social class(i.e.,family economic status,parental education level,and academic performance).Multiple logistic regression analyses were ***:Overall,the proportion of adolescents meeting physical activity,ST,and sleep recommendations were 5.3%,60.3%,and 10.2%on weekdays and 5.3%,28.2%,and 46.4%on weekend days,*** 2013 and 2018,no substantial changes were observed for meeting the physical activity or sleep recommendation,while meeting the ST recommendation was markedly lower in *** proportion of meeting all 3 recommendations were 0.5%for weekdays and 0.8%for weekend ***,compared to female adolescents,male adolescents were consistently associated with more favorable patterns of meeting different sets of recommendations,regardless of social *** females only,social class appeared to be not important or even detrimental in meeting different sets of *** male,compounded with social class,was associated with meeting the ST ***:less than 1%of Korean adolescents met the overall ***-based analysis and intervention may be important in promoting healthy active lifestyles among South Korean adolescents.

关键词： Intersectionality theory Physical activity Sedentary behavior Sleep Social determinants of health

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视盘的有效评估:与杯盘比的对比(英文)

国际眼科杂志 2011年第8期11卷 1314-1317页

作者：魏红 Camila Zangalli george l. Spaeth 四川大学华西医院眼科中国四川省成都市610041 威乐士眼科医院/杰佛逊医学院青光眼研究中心美国宾夕法尼亚州费城19107

青光眼是一种以进行性视盘变化和视野损失为特征的眼压相关性疾病。杯盘比在过去40a来都是评价视盘青光眼性改变的标准方法。然而我们却发现是一些小视盘的患者有典型青光眼性视野损失,而一些大视盘的患者却没有视野损失。杯盘比的检查... 详细信息

青光眼是一种以进行性视盘变化和视野损失为特征的眼压相关性疾病。杯盘比在过去40a来都是评价视盘青光眼性改变的标准方法。然而我们却发现是一些小视盘的患者有典型青光眼性视野损失,而一些大视盘的患者却没有视野损失。杯盘比的检查效力和可重复性都低于一些新的检查方法。视盘损伤可能度分级(DDlS)是一种衡量视盘盘沿面积、并且校正了视盘大小等影响因素的新型视盘评价方法。DDlS也许是评价青光眼视盘的更为优化的方法。

关键词：青光眼视神经盘杯盘比视乳头损伤分期法

Genetic diversity of rice blast fungus in northern China

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Chinese Rice Research Newsletter 1999年第2期7卷 4-6页

作者： lEICailin M.l.george JIANGWanru WANGJiulin lINGZhangzhuan InstofCropBreedingandCultivaiton CAASBeijing100081China EntomologyandPlantPathologyDIvistion IRRIP.O.Bax933ManilaPhilippines

The characterization of population structure ofblast pathogen contributes to the rational de- velopment and the deployment of blast-resis-tant *** study the population struc- ture of blast pathogen in northern China,DNA fingerprinting of 192 blast isolates col-lected in 8 representative districts in 1996 wasconducted by using Pot 2-PCR method. Sampling sites and number of haplotypeswere listed in *** isolation,DNAamplification,and gel running were done as

关键词： Genetic diversity of rice blast fungus in northern China

Garlic-derived compound S-allylmercaptocysteine inhibits hepatocarcinogenesis through targeting lRP6/Wnt pathway

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Acta Pharmaceutica Sinica B 2018年第4期8卷 575-586页

作者： Jia Xiao Feiyue Xing Yingxia liu Yi lv Xiaogang Wang Ming-Tat ling Hao Gao Songying Ouyang Min Yang Jiang Zhu Yu Xia Kwok-Fai So george l.Tipoe State Key Discipline of Infectious Diseases Shenzhen Third People's Hospital Department of Immunobiology Institute of Tissue Transplantation and ImmunologyJinan University School of Biomedical Sciences The University of Hong Kong Department of Cell Biology & Institute of Biomedicine Jinan University Australian Prostate Cancer Research Centre-Queensland and Institute of Health and Biomedical Innovation Queensland University of Technology Institute of Traditional Chinese Medicine and Natural Products College of PharmacyJinan University Biomedical Research Center of South China College of Life SciencesFujian Normal University JM Medical (Shenzhen) LLC GMH Institute of Central Nervous System Regeneration Jinan University

Whether and how garlic-derived S-allylmercaptocysteine(SAMC) inhibits hepatocellular carcinoma(HCC) is largely unknown. In the current study, the role of low-density lipoprotein receptor(lDlR)-related protein 6(lRP6) in HCC progression and the anti-HCC mechanism of SAMC was examined in clinical sample, cell model and xenograft/orthotopic mouse models. We demonstrated that SAMC inhibited cell proliferation and tumorigenesis, while induced apoptosis of human HCC cells without influencing normal hepatocytes. SAMC directly interacted with Wnt-pathway co-receptor lRP6 on the cell membrane. lRP6 was frequently over-expressed in the tumor tissue of human HCC patients(66.7% of 48 patients) and its overexpression only correlated with the over-expression of β-catenin, but not with age, gender, tumor size, stage and metastasis. Deficiency or over-expression of lRP6 in hepatoma cells could partly mimic or counteract the anti-tumor properties of SAMC, respectively. In vivo administration of SAMC significantly suppressed the growth of Huh-7 xenograft/orthotopic HCC tumor without causing undesirable side effects. In addition, stable down-regulation of lRP6 in Huh-7 facilitated the anti-HCC effects of SAMC. In conclusion, lRP6 can be a potential therapeutic target of HCC. SAMC is a promising specific anti-tumor agent for treating HCC subtypes with Wnt activation at the hepatoma cell surface.

关键词： S-allylmercaptocysteine HCC Wnt lRP6 Human Nude mice

l^0-CONVEX COMPACTNESS AND RANDOM NORMAl STRUCTURE IN l^0(F,B)

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Acta Mathematica Scientia 2020年第2期40卷 457-469页

作者： Tiexin GUO Erxin ZHANG Yachao WANG george YUAN School of Mathematics and Statistics Central South UniversityChangsha 410083China Centre for Financial Engineering Soochow UniversitySuzhou 215006China

let(B,||·||)be a Banach space,(?,F,P)a probability space,and l^0(F,B)the set of equivalence classes of strong random elements(or strongly measurable functions)from(?,F,P)to(B,||·||).It is well known that l^0(F,B)becomes a complete random normed module,which has played an important role in the process of applications of random normed modules to the theory of lebesgue-Bochner function spaces and random operator *** V be a closed convex subset of B and l^0(F,V)the set of equivalence classes of strong random elements from(?,F,P)to *** central purpose of this article is to prove the following two results:(1)l^0(F,V)is l^0-convexly compact if and only if V is weakly compact;(2)l^0(F,V)has random normal structure if V is weakly compact and has normal *** an application,a general random fixed point theorem for a strong random nonexpansive operator is given,which generalizes and improves several well known *** hope that our new method,namely skillfully combining measurable selection theorems,the theory of random normed modules,and Banach space techniques,can be applied in the other related aspects.

关键词： Complete random normed modules fixed point theorem l^0-convex compactness random normal structure random nonexpansive operators

Wireless Channel Parameter Estimation Algorithms: Recent Advances and Future Challenges

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China Communications 2018年第5期15卷 211-228页

作者： Rui Feng Yu liu Jie Huang Jian Sun Cheng-Xiang Wang george Goussetis Shandong Provincial Key lab of Wireless Communication Technologies Shandong University Institute of Sensors Signals and Systems School of Engineering & Physical Sciences Heriot-Watt University

Temporal and three-dimensional(3 D) spatial information is important for the characterization of wireless channels. In this paper, the commonly used array signal processing(ASP) methods to estimate channel parameters are summarized. Firstly, algorithms that can be used to estimate azimuth angle of arrival(AAo A) and elevation Ao A(EAo A) are introduced. They include multiple signal classification(MUSIC), estimation of signal parameter via rotational invariance techniques(ESPRIT), and Unitary ESPRIT algorithms. Secondly, algorithms that can be used to jointly estimate delay, AAo A, and EAo A are given. They include joint angle and delay estimation(JADE) MUSIC, JADE ESPRIT, shift-invariance(SI) JADE, and space-alternating generalized expectation-maximization(SAGE) algorithms. We also propose an improved SIJADE algorithm to further reduce computation complexity by incorporating with the Unitary ESPRIT algorithm. Performance of the above algorithms to extract only spatial information and to jointly extract temporal and spatial information is compared in both synthetic and 60 GHz real channel environments. Simulation results show that with the inclusion of delay estimation, the joint temporal and spatial estimation algorithms can provide better resolution than algorithms estimating only *** data processing results show that MUSIC algorithm can provide comparable results with SAGE algorithm in estimating AAoA and EAoA. SI-JADE and the improved SI-JADE algorithms are also applicable to process 60 GHz channel measurement ***, MUSIC, SI-JADE, and the improved SI-JADE algorithms can greatly reduce computational burden compared with SAGE algorithm. At last, some future directions are pointed out.

关键词： MUSIC JADE MUSIC/ESPRIT SI-JADE SAGE algorithm millimeter wave

A new species of genus Phraortes St?l and the first description of female *** Chen & He from China(Phasmatodea:Phasmatidae)

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Zoological Systematics 2016年第3期41卷 332-336页

作者： Wai-Chun george Ho Hong Kong Entomological Society P.O.Box No.73749Kowloon Central Post Office

A new species, Phraortes lii sp. nov., from Guangxi, China, is described and illustrated. The female of P. corniformis Chen＆ He, 1993 is firstly described. The examined material including types and non-types are depo... 详细信息

关键词： lonchodinae Phraortes new species China.

Interferon-free regimens in patients with hepatitis C infection and renal dysfunction or kidney transplantation

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World Journal of Hepatology 2017年第4期9卷 180-190页

作者： Evangelos Cholongitas Chrysoula Pipili george V Papatheodoridis 4th Department of Internal Medicine Medical School of Aristotle University Hippokration General Hospital of Thessaloniki Division of Nephrology Queen Elizabeth University Hospital Department of Gastroenterology Medical School of National and Kapodistrian University of Athens Laiko General Hospital

Treatment of patients with chronic kidney disease(CKD) and chronic hepatitis C(CHC) differs from that used in the general CHC population mostly when glomerular filtration rate(GFR) is below 30 m l/min, as sofosbuvir, the backbone of several current regimens, is officially contraindicated. Given that ribavirin free regimens are preferable in CKD, elbasvir/grazoprevir is offered in CHC patients with genotype 1 or 4 and ombitasvir/paritaprevir and dasabuvir in genotype 1b for 12 wk. Although regimens containing peginterferon with or without ribavirin are officially recommended for patients with CKD and genotype 2, 3, 5, 6, such regimens are rarely used because of their low efficacy and the poor safety and tolerance profile. In this setting, especially in the presence of advanced liver disease, sofosbuvirbased regimens are often used, despite sofosbuvir contraindication. It seems to have good overall safety with only 6% or 3.4% of CKD patients to discontinue therapy or develop serious adverse events without drug discontinuation. In addition, sustained virological response(SVR) rates with sofosbuvir based regimens in CKD patients appear to be comparable with SVR rates in patients with normal renal function. Treatment recommendations for kidney transplant recipients are the same with those for patients with CHC, taking into consideration potential drug-drug interactions and baseline GFR before treatment initiation. This review summarizes recent data on the current managementof CHC in CKD patients highlighting their strengths and weaknesses and determining their usefulness in clinical practice.

关键词： Chronic hepatitis C virus infection Kidney Renal Kidney transplantation Direct acting antiviral agents Glomerular filtration rate Hepatitis C