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NUMERICAL AND EXPERIMENTAL STUDIES OF INFLUENCE OF THE CAUDAL FIN SHAPE ON THE PROPULSION PERFORMANCE OF A FLAPPING CAUDAL FIN

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Journal of Hydrodynamics 2011年第3期23卷 325-332页

作者： ZHANG xi SU Yu-min wang Zhao-li State Key Laboratory of Autonomous Underwater Vehicle Harbin Engineering University Harbin 150001 China

This article presents a comprehensive study of the effects of the caudal fin shape on the propulsion performance of a candal fin in harmonic heaving and pitching. A numerical simulation based on an unsteady panel method was carried out to analyze the hydrodynamic performance of flapping caudal fins of three shapes （the whale caudal fin with the largest projected area, the dolphin caudal fin with the median projected area, and the tuna caudal fin with the smallest projected area）. Then, a series of hydrodynamic experiments for three caudal fin shapes were performed. Both computational and experimental results indicate that the tuna caudal fin produces the highest efficiency. However the mean thrust coefficient of the tuna caudal fin is the smallest. It is found that although the mean thrust coefficient for the tuna caudal fin is not large, the input power of the tuna caudal fin is also quite small. So the tuna caudal fin achieves a high efficiency.

关键词： flapping caudal fin caudal fin shape numerical simulations hydrodynamic experiments hydrodynamic performance

Attention and Intervention of Oncologists on Oxaliplatin-induced Adverse Reactions in China' Mainland:A Cross-sectional Internet-based Survey

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Current Medical Science 2022年第6期42卷 1319-1324页

作者： Wei LI Lu xiAO Zao-qin YU min LI xi-min wang Dong LIU Cheng-liang ZHANG Department of Pharmacy Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430030China Rehabilitation Division Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430030China

Objective This cross-sectional study aimed to investigate the current attention and intervention of oncologists on oxaliplatin(OXA)-induced adverse reactions(ADRs).Methods In 31 provinces or administrative regions across China,401 oncologists were surveyed through a self-designed *** survey queried the basic information of respondents,clinical use of OXA,OXA-induced ADRs,and relative ***-square tests and multiple logistic regression were used to explore the sociodemographic factors influencing the safety perception of OXA and the relevant *** The survey showed that the age of respondents was mainly distributed between 30 and 40 years and the working period for most oncologists was no more than 5 *** with long working years were more willing to conduct patient education and inquire about ADRs than those with short working *** rate of ADRs reported by oncologists with intermediate professional titles was significantly higher than that reported by oncologists with junior and senior professional *** Our findings indicate that oncologists in China's Mainland are concerned about OXA-induced ADRs,but the reporting of ADRs still needs to be ***,training and educational programs are urgently needed to improve the risk management of OXA-induced ADRs among oncologists.

关键词： oxaliplatin adverse reaction intervention cross-sectional survey

Fanlian Huazhuo Formula alleviates high-fat diet-induced nonalcoholic fatty liver disease by modulating autophagy and lipid synthesis signaling pathway

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World Journal of Gastroenterology 2024年第30期30卷 3584-3608页

作者： Meng-Yuan Niu Geng-Ting Dong Yi Li Qing Luo Liu Cao xi-min wang Qi-Wen wang Yi-Ting wang Zhe Zhang xi-Wen Zhong Wei-Bo Dai Le-Yu Li Pharmacology Laboratory Zhongshan Hospital of Traditional Chinese Medicine Affiliated to Guangzhou University of Traditional Chinese MedicineZhongshan 528400Guangdong ProvinceChina Department of Endocrinology Zhongshan Hospital of Traditional Chinese Medicine Affiliated to Guangzhou University of Traditional Chinese MedicineZhongshan 528400Guangdong ProvinceChina

BACKGROUND Fanlian Huazhuo Formula(FLHZF)has the functions of invigorating spleen and resolving phlegm,clearing heat and purging *** has been identified to have therapeutic effects on type 2 diabetes mellitus(T2DM)in clinical ***-alcoholic fatty liver disease(NAFLD)is frequently diagnosed in patients with ***,the therapeutic potential of FLHZF on NAFLD and the underlying mechanisms need further *** To elucidate the effects of FLHZF on NAFLD and explore the underlying hepatoprotective mechanisms in vivo and in *** HepG2 cells were treated with free fatty acid for 24 hours to induce lipid accumulation cell ***,experiments were conducted with the different concentrations of freeze-dried powder of FLHZF for 24 hours.C57BL/6 mice were fed a high-fat diet for 8-week to establish a mouse model of NAFLD,and then treated with the different concentrations of FLHZF for 10 *** FLHZF had therapeutic potential against lipid accumulation and abnormal changes in biochemical indicators in vivo and in *** experiments verified that FLHZF alleviated abnormal lipid metabolism might by reducing oxidative stress,regulating the AMPKα/SREBP-1C signaling pathway,activating autophagy,and inhibiting hepatocyte *** FLHZF alleviates abnormal lipid metabolism in NAFLD models by regulating reactive oxygen species,autophagy,apoptosis,and lipid synthesis signaling pathways,indicating its potential for clinical application in NAFLD.

关键词： Fanlian Huazhuo Formula Nonalcoholic fatty liver disease Autophagy Apoptosis AMPKα/SREBP-1C signal pathway Oxidative stress

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基于二级嵌套阵列的宽频段欠定波达方向估计

浙江大学学报（工学版） 2017年第5期51卷 1016-1023页

作者：吴晨曦张旻王可人解放军电子工程学院安徽合肥230037

针对宽频段欠定波达方向(DOA)估计问题,提出基于二级嵌套阵列的DOA估计方法.利用空间频率对阵列接收数据进行降维处理;利用空间频率的空域稀疏性建立空间频率连续稀疏模型,利用原始对偶方法以及多项式求根得到空间频率的高分辨估计;构... 详细信息

针对宽频段欠定波达方向(DOA)估计问题,提出基于二级嵌套阵列的DOA估计方法.利用空间频率对阵列接收数据进行降维处理;利用空间频率的空域稀疏性建立空间频率连续稀疏模型,利用原始对偶方法以及多项式求根得到空间频率的高分辨估计;构建频域协方差矩阵并进行特征分解,利用大特征矢量之和来建立配对函数实现信号频率与空间频率准确配对得到DOA估计.结果表明,该方法可估计的信号数远大于实际阵元数,同时能够有效避免传统稀疏重构方法中由于角度域离散化所导致的模型不匹配对估计性能的影响,提高了估计精度与分辨力.

关键词：阵列信号处理波达方向估计嵌套阵列宽频段连续稀疏重构

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基于变量分离的修正有限元数值计算

水动力学研究与进展（A辑） 2003年第2期18卷 189-195页

作者：刘小民席光王尚锦西安交通大学能源与动力工程学院陕西西安710049

采用有限元方法直接求解粘性不可压缩流动N S耦合方程 ,本文从离散化的动量方程和连续方程出发 ,得到了替代连续方程的压力简化统一方程 ,将各个求解变量分离开来 ,建立起直接从方程中求解压力场的有限元数值计算方法 ,有效地消除了压... 详细信息

采用有限元方法直接求解粘性不可压缩流动N S耦合方程 ,本文从离散化的动量方程和连续方程出发 ,得到了替代连续方程的压力简化统一方程 ,将各个求解变量分离开来 ,建立起直接从方程中求解压力场的有限元数值计算方法 ,有效地消除了压力场的伪震荡。通过对层流和紊流典型算例的分析比较。

关键词：有限单元数值模拟迭代解变量雷诺数粘性不可压缩流动

Applying data cleaning in Changqing Oilfield Company’s data warehouse

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Applying data cleaning in Changqing Oilfield Company’s data...

2010 Second IITA International Conference on Geoscience and Remote Sensing (IITA-GRS 2010)

作者： Gao xiang School of computer Northwestern Polytechnical University xi’an China wang min School of communication Air Force Engineering University xi’an China

In past ten years,Changqing Oilfield Company had constructed many information systems,mess of data had been collected in database. A great deal of knowledge and experience was embedded in these databases. To get the useful information,we must assure that all the data in the database are accurate,integrated,consistent and unique,so cleaning data of errors in structure and content is very important for data warehousing and integration. In this paper,we discussed the data quality problems appeared in the raw data,and the workflow of the data cleaning is described. For different type of the data,we adopted several cleaning method to process,details of the methods are also given in the paper. We had applied the data cleaning approaches in practice and achieved the ideal result.

关键词： data cleaning data integration data warehouse oilfield

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先进的天基分布式SAR仿真系统

系统仿真学报 2009年第11期21卷 3268-3272页

作者：余安喜王敏董臻梁甸农国防科技大学电子科学与工程学院长沙410073

天基分布式SAR仿真系统对于系统新体制、新原理、新方法的仿真验证,以及系统性能评估和指标分配具有重要的应用价值。介绍一套先进的天基分布式SAR仿真系统,它具有多功能、高精度、高速度、易扩展、界面友好等显著特点。重点研究了仿真... 详细信息

天基分布式SAR仿真系统对于系统新体制、新原理、新方法的仿真验证,以及系统性能评估和指标分配具有重要的应用价值。介绍一套先进的天基分布式SAR仿真系统,它具有多功能、高精度、高速度、易扩展、界面友好等显著特点。重点研究了仿真系统的体系结构和关键分系统的设计与实现问题,两个仿真实例展现出系统的功能和性能。

关键词：天基分布式SAR 仿真系统体系结构电磁建模回波仿真

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国家最高科技奖获得者对数学教育的启示

数学教育学报 2011年第4期20卷 55-58页

作者：李超乔希民王念良商洛学院数学与计算科学系

概述国家最高科学技术奖获得者的基本信息，深入分析获奖者成长的一般性规律，可以得到如下结论：杰出科技人才成功的主要因素是受其父母的教育思想和家庭学习传统及地域文化的影响，也受其教师的教育教学水平和身边有远见卓识的人的影... 详细信息

概述国家最高科学技术奖获得者的基本信息，深入分析获奖者成长的一般性规律，可以得到如下结论：杰出科技人才成功的主要因素是受其父母的教育思想和家庭学习传统及地域文化的影响，也受其教师的教育教学水平和身边有远见卓识的人的影响．因此，数学教师的教育教学水平与能力，直接影响了学生的好奇心和兴趣、理性质疑批判精神、创造性思维能力的形成．

关键词：国家最高科学技术奖杰出科技人才创新能力数学教育

谷胱甘肽S转移酶P1和4-HNE在前列腺癌中的表达及其临床意义

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中华男科学杂志 2017年第5期23卷 412-416页

作者：宋旭王蓉肖锋张圣熙龚敏王秀玲张耘黄锦阳上海中医药大学附属第七人民医院泌尿外科上海200137

目的:探讨谷胱甘肽S转移酶P1(GSTP1)和四羟基壬烯(4-HNE)在前列腺癌组织中的表达及其临床意义。方法:采用免疫组化方法检测40例前列腺癌组织及42例BPH组织中GSTP1和4-HNE的表达,分析GSTP1和4-HNE的表达与Gleason分级之间的关系。结果:GS... 详细信息

目的:探讨谷胱甘肽S转移酶P1(GSTP1)和四羟基壬烯(4-HNE)在前列腺癌组织中的表达及其临床意义。方法:采用免疫组化方法检测40例前列腺癌组织及42例BPH组织中GSTP1和4-HNE的表达,分析GSTP1和4-HNE的表达与Gleason分级之间的关系。结果:GSTP1在BPH组织中为高表达(92.9%),40例前列腺癌组织中GSTP1表达率在高、中、低分化癌中分别为58.3%、20.0%、16.7%,呈下降趋势,两组GSTP1表达差异有统计学意义(P<0.01)。4-HNE在前列腺增生组织中阳性表达率较低,仅为5.0%。40例前列腺癌组织中4-HNE高表达,在高、中、低分化癌中分别为91.6%、100.0%、100.0%,呈明显上升趋势,两组4-HNE表达差异有统计学意义(P<0.01)。前列腺癌组织中GSTP1和4-HNE阳性表达呈负相关(r=-2.73,P<0.01)。结论:GSTP1表达缺失和4-HNE的高表达,可能在前列腺癌的进展中起重要作用。

关键词：前列腺肿瘤谷胱甘肽S转移酶四羟基壬烯免疫组化