期刊文献+
共找到111,202篇文章
< 1 2 250 >
每页显示 20 50 100
An integrated spatial planning of the mountainous landscapes for ski sports in a case area at the eastern Türkiye
1
作者 SATIR Onur TOSUN Busra +2 位作者 COSKUN OZYOL Funda OZDEMIR Omer Faruk BERBEROGLU Suha 《Journal of Mountain Science》 SCIE CSCD 2024年第3期754-767,共14页
Mountainous regions have disadvantages in economic development because of harsh physical and climatic conditions.However,winter tourism activities are one of the key components for supporting economic development in t... Mountainous regions have disadvantages in economic development because of harsh physical and climatic conditions.However,winter tourism activities are one of the key components for supporting economic development in the highlands.Establishing a ski resort area supports direct and indirect employment in a region,and it stops immigration from mountainous regions to other places.This research aimed to assess the potential ski areas using a multi criteria evaluation technique in the Van region which is located in the eastern part of Türkiye.In this context,snow cover duration,sun effect,slope,slope length,elevation,population density,distance from main roads and lake visibility were used as input factors in the decision making process.Each factor was standardized using a fuzzy technique based on existing well-known ski centers in Türkiye.The weight of inputs was defined by applying a survey to the professional skiers.The most important factors were detected as transportation opportunities and snow covers whereas,the least important factors were elevation and population density.Additionally,lake visibility was very important to make a difference from other existing facilities in the region.Therefore,it was included as constraints and lake visible areas were extracted at the final stage of the research.Potential ski areas were mapped in three levels as professional,intermediate and beginner skiers.One of the suitable areas was selected as a sample projection and for the 3D simulation of the ski investment area.Potential costs and benefits were discussed.It was found that a ski tourism area investment can be amortized in 3 years in the region. 展开更多
关键词 Winter sports and tourism Decision making 3D simulation and modelling Landscape planning GIS
下载PDF
Strategies for Boxing Teaching in Competitive Sports Schools
2
作者 Yu Huang 《Journal of Contemporary Educational Research》 2024年第7期258-263,共6页
To improve the quality of boxing teaching in competitive sports schools,it is necessary to first analyze the strengths and weaknesses of boxing teaching in competitive sports schools,and then optimize the teaching str... To improve the quality of boxing teaching in competitive sports schools,it is necessary to first analyze the strengths and weaknesses of boxing teaching in competitive sports schools,and then optimize the teaching strategy.The strategies include innovating the boxing curriculum system and content,building learning communities inside and outside the classroom,personalizing the teaching forms and methods,using multimedia to broaden the teaching path,focusing on the integration of boxing teaching leagues,and diversifying the teaching incentives and evaluations. 展开更多
关键词 Competitive sports schools BOXING Teaching strategies
下载PDF
Analysis of China’s Sports Diplomacy Path from the Perspective of Soft Power
3
作者 Ying Ye 《Journal of Contemporary Educational Research》 2024年第7期246-251,共6页
“When a country prospers,sports thrive.”Building a strong sports country is an important connotation of realizing the great rejuvenation of the Chinese nation and building a moderately prosperous society in all resp... “When a country prospers,sports thrive.”Building a strong sports country is an important connotation of realizing the great rejuvenation of the Chinese nation and building a moderately prosperous society in all respects.Actively engaging in sports diplomacy from the perspective of soft power can expand a country’s international influence,promote friendly cooperation between nations,and enhance the overall image of the country.This article analyzes the concepts of soft power and sports diplomacy and explores the path of China’s sports diplomacy from four aspects:promoting diverse subjects,expanding propaganda channels,optimizing underlying design,and actively participating in competitions. 展开更多
关键词 Soft power sports diplomacy Implementation path
下载PDF
PE纤维与细橡胶颗粒对泡沫混凝土弯曲韧性的影响 被引量:2
4
作者 吴昊 龙广成 +2 位作者 杨恺 曾晓辉 唐卓 《建筑材料学报》 EI CAS CSCD 北大核心 2024年第3期206-214,共9页
研究了聚乙烯(PE)纤维及其与细橡胶颗粒复掺对泡沫混凝土弯曲破坏模式、峰值强度、能量吸收特性和弯曲韧性的影响,并结合孔结构分析和微观形貌观察探究了其作用机理.结果表明:PE纤维使泡沫混凝土出现多缝开裂模式,显著提升了其峰值强度... 研究了聚乙烯(PE)纤维及其与细橡胶颗粒复掺对泡沫混凝土弯曲破坏模式、峰值强度、能量吸收特性和弯曲韧性的影响,并结合孔结构分析和微观形貌观察探究了其作用机理.结果表明:PE纤维使泡沫混凝土出现多缝开裂模式,显著提升了其峰值强度、能量吸收能力和弯曲韧性;复掺细橡胶颗粒可以进一步提升泡沫混凝土试件的比能量吸收和弯曲韧性;掺入PE纤维可以降低泡沫混凝土的平均孔径;复掺细橡胶颗粒导致泡沫混凝土试件的平均孔径增大,联通孔增多,对其峰值强度有不利影响;PE纤维及细橡胶颗粒提升泡沫混凝土弯曲韧性的主要原因在于其削弱了裂纹尖端的应力集中,同时增强了能量耗散作用. 展开更多
关键词 泡沫混凝土 pe纤维 细橡胶颗粒 弯曲韧性 机理
下载PDF
PE管道的爆破振动响应规律及灰色关联度分析
5
作者 段宝福 于昭文 +2 位作者 徐伟善 孙宗军 张正欣 《工程爆破》 CSCD 北大核心 2024年第1期110-118,共9页
为了降低隧道爆破施工对既有埋地PE管道造成的振动危害,有必要在施工前了解影响管道振动效应的各种因素。根据现场实测数据,采用MIDAS GTS NX软件建立岩土体-隧道-PE管道三维数值模型,并将现场监测结果和数值模拟结果进行对比分析,验证... 为了降低隧道爆破施工对既有埋地PE管道造成的振动危害,有必要在施工前了解影响管道振动效应的各种因素。根据现场实测数据,采用MIDAS GTS NX软件建立岩土体-隧道-PE管道三维数值模型,并将现场监测结果和数值模拟结果进行对比分析,验证数值模型的可靠性。分析得出:爆破振动作用下土体弹性模量、泊松比和管径的增加会使管道的最大振速增大;因为地表自由面叠加作用的原因,管道埋深的增加使管道最大振速先减小后增大。运用灰色关联度理论,确定了4种不同因素对管道振动效应的影响程度,主次关系为:土体弹性模量>管道埋深>土体泊松比>管道直径。准确地了解各因素对管道振动的影响程度能够更好的对隧道爆破施工时PE管道的安全性进行评估,为工程实际施工提供参考。 展开更多
关键词 隧道爆破 灰色关联度 pe管道 振动响应
下载PDF
横向滑坡载荷作用下埋地PE管道的损伤数值模拟
6
作者 燕集中 沈利民 +1 位作者 杨洪 汤文亮 《科学技术与工程》 北大核心 2024年第17期7114-7121,共8页
埋地燃气输送管道服役环境复杂,其中滑坡地质灾害严重威胁管道的服役安全。以埋地聚乙烯(polyethylene,PE)管道为研究对象,利用ABAQUS有限元软件模拟了横向滑坡载荷作用下的管道损伤行为,探讨了滑坡参数(滑坡体位移量)、管道埋深以及内... 埋地燃气输送管道服役环境复杂,其中滑坡地质灾害严重威胁管道的服役安全。以埋地聚乙烯(polyethylene,PE)管道为研究对象,利用ABAQUS有限元软件模拟了横向滑坡载荷作用下的管道损伤行为,探讨了滑坡参数(滑坡体位移量)、管道埋深以及内压对PE管力学性能的影响。研究结果表明:滑坡作用下埋地PE管最大偏移、最大Mises应力和最大主应变均位于管轴向横截对称面上。管道最大Mises应力随滑坡位移的增大而增大,管底为管道最终屈服点,屈服主要原因为管横截面被压扁变形。管道未屈服时,最大Mises应力随内压的增大呈现先减小后增大的现象,最大主应变随内压的增大而增大。最大Mises应力和最大主应变均随埋深的增大而增大。 展开更多
关键词 ABAQUS 有限元模拟 埋地pe 横向滑坡 力学响应
下载PDF
微波加热下生活废纸和PE塑料共热解产气特性
7
作者 林雪彬 张晓东 +1 位作者 黄元波 何宏舟 《集美大学学报(自然科学版)》 CAS 2024年第5期454-462,共9页
以可燃生活垃圾中的主要成分——生活废纸和聚乙烯(polyethylene,PE)塑料为原料,采用微波加热,对纸张/PE共热解中产气释放过程、产气成分和产气率等特性的影响规律进行研究。实验结果表明:在600℃热解终温下,产气成分以CO、CO_(2)为主,... 以可燃生活垃圾中的主要成分——生活废纸和聚乙烯(polyethylene,PE)塑料为原料,采用微波加热,对纸张/PE共热解中产气释放过程、产气成分和产气率等特性的影响规律进行研究。实验结果表明:在600℃热解终温下,产气成分以CO、CO_(2)为主,约为35%~40%,其次为CH_(4)、H_(2),其他气体含量较低。随着微波功率的增加,热解产气各成分的产量都明显增加,且各产气析出温度及峰值温度向高温方向移动。随着物料中PE的混合比例增加,纸张/PE共热解产气率降低明显,焦油产率则明显增加,表明PE热解产物以焦油为主。在定热解终温的情况下,添加热解碳对热解产气成分的体积分数影响不大,但可有效提高热解产气量。 展开更多
关键词 可燃生活垃圾 废纸 pe塑料 微波 共热解 产气特性
下载PDF
CFRP-PE-不锈钢筋混凝土短柱的设计方法研究
8
作者 王志滨 宋培 +2 位作者 徐辉 邱瑞明 张健斌 《湖南大学学报(自然科学版)》 EI CAS CSCD 北大核心 2024年第5期22-33,共12页
进行了17个CFRP-PE-不锈钢筋混凝土短柱和8个对比试件的轴压试验,探究不锈钢种类、箍筋间距、CFRP厚度、PE厚度对该类组合柱的破坏模态、荷载-应变曲线、极限应变、极限承载力、延性的影响规律.试验结果表明:在CFRP和混凝土间设置PE垫... 进行了17个CFRP-PE-不锈钢筋混凝土短柱和8个对比试件的轴压试验,探究不锈钢种类、箍筋间距、CFRP厚度、PE厚度对该类组合柱的破坏模态、荷载-应变曲线、极限应变、极限承载力、延性的影响规律.试验结果表明:在CFRP和混凝土间设置PE垫层能提高该类组合短柱的延性和变形能力,并降低其承载力;增大CFRP厚度可提高其承载力和极限应变,但试件表现出增大的脆性;减小箍筋间距或增大钢筋强度可显著提高其承载力、峰值应变和延性.建立了有限元模型,有限元分析表明:增大PE厚径比会显著提高该类组合短柱的变形能力和延性,并降低CFRP对其承载力的影响;增大配箍率、不锈钢强度、CFRP抗拉强度、CFRP厚度可提升该类组合短柱的极限应变与承载力;提高混凝土强度会提高该类组合短柱的峰值承载力,但降低其极限应变.最终建议了该类组合短柱的延性设计方法、承载力模型和极限应变模型. 展开更多
关键词 CFRP-pe-不锈钢筋混凝土 pe垫层 延性设计 承载力模型 有限元模型
下载PDF
The Integration of Sports Specialty English and College English Teaching in the Independent Colleges
9
作者 吴园园 《疯狂英语(理论版)》 2017年第4期112-113,共2页
At the present time,there are many imbalances in sports specialty English teaching in the independent colleges such as emphasis on basic English teaching while ignoring sports specialty English teaching, unreasonable ... At the present time,there are many imbalances in sports specialty English teaching in the independent colleges such as emphasis on basic English teaching while ignoring sports specialty English teaching, unreasonable application of modern information technology, imbalance of English teachers' knowledge structure in sports specialty, etc. As for the English teaching in sports specialty in the independent college,it is necessary to build college English curriculum system with the attributes of sports education. 展开更多
关键词 sports Specialty English College English Teaching the Independent Colleges
下载PDF
生物油/预处理废旧PE复合改性沥青研究
10
作者 冯新军 傅豪 《建筑材料学报》 EI CAS CSCD 北大核心 2024年第1期37-45,75,共10页
为了解决废旧塑料改性沥青储存稳定性和低温抗裂性差等问题,采用双螺杆挤出机对废旧聚乙烯(PE)进行预处理,并将其与生物油复合制得生物油/预处理废旧PE复合改性沥青.采用离析试验、流变性能试验、荧光显微镜试验和傅里叶变换红外光谱试... 为了解决废旧塑料改性沥青储存稳定性和低温抗裂性差等问题,采用双螺杆挤出机对废旧聚乙烯(PE)进行预处理,并将其与生物油复合制得生物油/预处理废旧PE复合改性沥青.采用离析试验、流变性能试验、荧光显微镜试验和傅里叶变换红外光谱试验分析了改性沥青的储存稳定性、低温抗裂性和高温稳定性.结果表明:经预处理后的PE密度与沥青密度相近,极性基团和C=C结构更多,化学活性增强,大大提高了废旧PE改性沥青的储存稳定性;生物油/预处理废旧PE复合改性沥青形成了连续的网状结构,进一步提高了废旧PE改性沥青的储存稳定性,并显著提升了其低温抗裂性,但降低了其高温稳定性. 展开更多
关键词 改性沥青 生物油 预处理废旧pe 储存稳定性 低温抗裂性
下载PDF
SVMD-PE-BP-Transformer短期光伏功率预测
11
作者 王瑞 靳鑫鑫 逯静 《电网与清洁能源》 CSCD 北大核心 2024年第8期141-150,共10页
考虑到光伏功率受气象因素变化影响而波动性大难以预测的问题,将逐次变分模态分解SVMD-排列熵PE与BPTransformer相结合,给出了一种组合预测方法,以下简称SPBT模型。在去除非相关因子的基础上,利用SOM聚类方法,对全年光伏数据进行3种类... 考虑到光伏功率受气象因素变化影响而波动性大难以预测的问题,将逐次变分模态分解SVMD-排列熵PE与BPTransformer相结合,给出了一种组合预测方法,以下简称SPBT模型。在去除非相关因子的基础上,利用SOM聚类方法,对全年光伏数据进行3种类型的分类;针对光伏发电初始时序中所蕴含的重要信息,利用SVMD自适应K值的方法,对其进行分解。再利用PE方法计算各个子序列的熵值,即序列的起伏复杂程度,根据熵的大小,对频率接近的成分进行重构,将其分为两个区间:复杂度低的部分和复杂度高的部分。最后利用BP网络与Transformer分别对其进行预测,并对预测输出进行综合处理。该文以江苏省一光伏电站观测的气象与功率数据为例,通过比较试验验证了该模型的优势,该模型具有较低的预测误差,有助于提高预测精度。 展开更多
关键词 逐次变分模态分解 排列熵 TRANSFORMER 功率预测
下载PDF
基于正交试验的PE淋膜纸冲裁工艺参数优化
12
作者 张正伟 李令全 +2 位作者 王凌云 鞠海燕 赵广友 《机械研究与应用》 2024年第4期1-4,共4页
为了提高冲裁加工PE淋膜纸的断面质量,该文以冲裁速度、冲裁间隙、斜刃倾角三种工艺参数为影响因素,选择纸张毛刺高度作为评价指标,利用正交试验对工艺参数进行分析。结果表明:冲裁工艺参数对纸张毛刺高度的影响程度分别为:加工间隙>... 为了提高冲裁加工PE淋膜纸的断面质量,该文以冲裁速度、冲裁间隙、斜刃倾角三种工艺参数为影响因素,选择纸张毛刺高度作为评价指标,利用正交试验对工艺参数进行分析。结果表明:冲裁工艺参数对纸张毛刺高度的影响程度分别为:加工间隙>冲裁速度>斜刃倾角。冲裁速度的变化与纸张毛刺高度的变化呈负相关,斜刃倾角、加工间隙的变化与纸张毛刺高度的变化呈正相关。研究得出最优冲裁工艺参数组合为:冲裁速度为220 n·min^(-1),斜刃倾角为0.35°,加工间隙为20μm。该项实验研究结果对提高冲裁加工PE淋膜纸的断面质量和生产效率以及降低产品的加工成本具有重要参考价值,在实际生产中具有一定的实用性、经济性价值。 展开更多
关键词 pe淋膜纸 冲裁速度 冲裁间隙 斜刃倾角 正交试验 毛刺高度
下载PDF
Impact of pediatric inflammatory bowel disease diagnosis on exercise and sports participation: Patient and parent perspectives 被引量:3
13
作者 Renée M Marchioni Beery Enju Li Laurie N Fishman 《World Journal of Gastroenterology》 SCIE CAS 2019年第31期4493-4501,共9页
BACKGROUND Inflammatory bowel disease(IBD)may limit physical activity due to intestinal or extraintestinal manifestations,fatigue,or exercise perception.We sought to evaluate the influence of IBD diagnosis on exercise... BACKGROUND Inflammatory bowel disease(IBD)may limit physical activity due to intestinal or extraintestinal manifestations,fatigue,or exercise perception.We sought to evaluate the influence of IBD diagnosis on exercise and sports participation in a pediatric population.We compared patient-reported and parent-reported perspectives.AIM To evaluate the influence of IBD diagnosis on exercise and sports participation in a pediatric population.METHODS Consecutive IBD outpatients(aged 10-18 years)and their parents completed parallel voluntary surveys.A validated,patient-reported functional activity scale,the Hospital for Special Surgery Pediatric Functional Activity Brief Scale(HSS Pedi-FABS)was used to assess children’s activity levels.RESULTS There were 149 completed surveys(75%response rate)with mean participant age of 16.5 years[standard deviation(SD)=4.0]and mean age at IBD diagnosis of 11.8 years(SD=3.4).Most patients(77%)were diagnosed within 12 mo of symptom onset.Current athletic participation was reported in 65%across 65 sports.Participation was greatest before(40%)rather than after(32%)IBD diagnosis,with no reported change in 28%.IBD negatively impacted play/performance in 45%but did not change play/performance in 44%.IBD treatment improved patients’desire to exercise(70%)and subjective capacity for aerobic exercise(72%).Patients and parents agreed that IBD subjects demonstrate normal capacity for aerobic exercise(0.40,95%CI:0.22-0.58)and that treatment improved both participatory desire(0.33,95%CI:0.12-0.54)and capacity for aerobic exercise(0.52,95%CI:0.31-0.71).Almost all(99%)viewed exercise as healthy,and most encouraged its practice.IBD patients demonstrated normal mean HSS Pedi-FABS scores.CONCLUSION After pediatric IBD diagnosis,most patients continue exercise and sports,with mean activity levels comparable to American youth.Treatment positively impacts participatory desire and aerobic capacity.Patients favor the role of exercise in IBD. 展开更多
关键词 INFLAMMATORY BOWEL disease Physical activity EXERCISE sports
下载PDF
Landscape Space Construction Based on Motion Vision——A Case Study of Landscape Design of Sichuan Olympic Sports School in China
14
作者 冯美文 孙大江 杨铱 《Journal of Landscape Research》 2011年第9期1-6,共6页
After the analysis of the beauty contained in motion vision, the paper had pointed out that motion vision was the link for spectators relating and communicating with aesthetic objects and decided landscape space const... After the analysis of the beauty contained in motion vision, the paper had pointed out that motion vision was the link for spectators relating and communicating with aesthetic objects and decided landscape space construction sequence. It further analyzed the relations between architectural space and visual perception which could be divided into inner experience and external experience. By taking landscape space construction of Sichuan Olympic Sports School for example, based on the analysis of design principles and objective of landscape space, the paper had focused on the discussion of landscape concept in terms of motion vision. In the perspective of two-dimensional vision, landscape effects of White Pigeon Square and Bright Eyes Square had been introduced. In the perspective of three-dimensional vision, landscape effects of the Olympic Rings waterscape and the Olympic Rings gallery had been illustrated. Finally, based on the integration between landscapes and architectures under visual perception, the coordination between campus architectures and landscape construction in Olympic Sports School had been analyzed. 展开更多
关键词 Motion VISION LANDSCApe space OLYMPIC sports SCHOOL LANDSCApe design
下载PDF
Hormone abuse in sports: the antidoping perspective 被引量:2
15
作者 Osquel Barroso Irene Mazzoni Olivier Rabin 《Asian Journal of Andrology》 SCIE CAS CSCD 2008年第3期391-402,共12页
Since ancient times, unethical athletes have attempted to gain an unfair competitive advantage through the use of doping substances. A list of doping substances and methods banned in sports is published yearly by the ... Since ancient times, unethical athletes have attempted to gain an unfair competitive advantage through the use of doping substances. A list of doping substances and methods banned in sports is published yearly by the World AntiDoping Agency (WADA). A substance or method might be included in the List if it fulfills at least two of the following criteria: enhances sports performance; represents a risk to the athlete's health; or violates the spirit of sports. This list, constantly updated to reflect new developments in the pharmaceutical industry as well as doping trends, enumerates the drug types and methods prohibited in and out of competition. Among the substances included are steroidal and peptide hormones and their modulators, stimulants, glucocorticosteroids, β2-agonists, diuretics and masking agents, narcotics, and cannabinoids. Blood doping, tampering, infusions, and gene doping are examples of prohibited methods indicated on the List. From all these, hormones constitute by far the highest number of adverse analytical findings reported by antidoping laboratories. Although to date most are due to anabolic steroids, the advent of molecular biology techniques has made recombinant peptide hormones readily available. These substances are gradually changing the landscape of doping trends. Peptide hormones like erythropoietin (EPO), human growth hormone (hGH), insulin, and insulin-like growth factor Ⅰ (IGF-Ⅰ) are presumed to be widely abused for performance enhancement. Furthermore, as there is a paucity of techniques suitable for their detection, peptide hormones are all the more attractive to dishonest athletes. This article will overview the use of hormones as doping substances in sports, focusing mainly on peptide hormones as they represent a pressing challenge to the current fight against doping. Hormones and hormones modulators being developed by the pharmaceutical industry, which could emerge as new doping substances, are also discussed. 展开更多
关键词 World Anti-Doping Agency doping HORMONE SPORT
下载PDF
欧洲体育俱乐部现在怎么样了?——Sports Clubs in Europe:A Cross-national Comparative Perspective评介 被引量:1
16
作者 薄纯磊 高奎亭 王永顺 《成都体育学院学报》 CSSCI 北大核心 2022年第4期136-141,共6页
作为现代体育的发源地,欧洲体育一直以来都是世界各国研究和学习的对象。体育俱乐部作为欧洲体育的根基,被置于研究的中心。Sports Clubs in Europe:A Cross-national Comparative Perspective一书基于标准化的层次分析框架,在比较视阈... 作为现代体育的发源地,欧洲体育一直以来都是世界各国研究和学习的对象。体育俱乐部作为欧洲体育的根基,被置于研究的中心。Sports Clubs in Europe:A Cross-national Comparative Perspective一书基于标准化的层次分析框架,在比较视阈中系统地介绍了欧洲各国体育俱乐部的发展历史、基本特征、机遇与挑战,呈现出了一些重要的研究成果。基于这些重要的研究成果,得出一些值得国内体育俱乐部研究与实践的启示。 展开更多
关键词 欧洲体育 体育俱乐部 跨国比较 体育组织 体育强国
下载PDF
非洲猪瘟病毒pE248R蛋白的原核表达及其多克隆抗体制备 被引量:1
17
作者 杜楠楠 陈金霞 +6 位作者 曹云雷 张宽 童武 李丽薇 赵冉 童光志 高飞 《中国动物传染病学报》 CAS 北大核心 2024年第2期188-194,共7页
本研究利用PCR方法从非洲猪瘟病毒的灭活样品中扩增出747 bp的E248R基因全长序列,利用同源重组法构建原核表达质粒pCold I-pE248R,经1 mmol/L的IPTG诱导1 h后,利用SDS-PAGE对重组蛋白进行表达鉴定和反应原性分析,表达蛋白的分子量约为32... 本研究利用PCR方法从非洲猪瘟病毒的灭活样品中扩增出747 bp的E248R基因全长序列,利用同源重组法构建原核表达质粒pCold I-pE248R,经1 mmol/L的IPTG诱导1 h后,利用SDS-PAGE对重组蛋白进行表达鉴定和反应原性分析,表达蛋白的分子量约为32 kDa,利用纯化后得到pE248R重组蛋白作为免疫原经过4次免疫后制备鼠源抗pE248R多克隆抗体。利用该多克隆抗体检测实验室构建并拯救的已证明能够稳定表达ASFV pE248R蛋白的重组病毒rPRRSV-E248R,结果显示制备的抗pE248R的多克隆抗体能够与rPRRSV-E248R发生特异性结合反应,证明利用本试验中原核表达的pE248R蛋白制备的多克隆抗体具有抗pE248R蛋白的特异性,为进一步针对ASFV E248R基因建立快速,特异性的血清学检测方法奠定了基础,也为针对pE248R蛋白的功能性研究提供了研究基础。 展开更多
关键词 非洲猪瘟病毒 E248R基因 pe248R蛋白 多克隆抗体
下载PDF
Study on Performance of Development of Sports Industry in China-Based on DEA Nonlinear Estimation 被引量:1
18
作者 Qinru SI 《Asian Agricultural Research》 2014年第1期14-17,23,共5页
Assessment of performance of China's sports industry is not only favorable for grasping development level of sports industry,but also able to,from micro perspective,find out factors influencing development of spor... Assessment of performance of China's sports industry is not only favorable for grasping development level of sports industry,but also able to,from micro perspective,find out factors influencing development of sports industry and their contribution to development of sports industry. Through selecting quantitative indicators for development of sports industry,the authors analyzed performance of development of sports industry in China and analyzed regional difference of sports industry by the data envelopment analysis( DEA) method. The study indicated that( i) performance of sports industry in recent years takes on growth trend,which may give the credit to scientific and technological progress;( ii) the development of sports industry in China has distinct spatial difference,best in eastern regions,better in middle regions,and poor in western regions. 展开更多
关键词 sports INDUSTRY peRFORMANCE DEA SPATIAL DIFFERENCE
下载PDF
Sports Fair Play and Critical Perspective
19
作者 许晓峰 《科技视界》 2014年第10期184-184,共1页
Here, this paper suggests that CIFP tamp the ideal of fair play, re-establish the fair play value system, and conduct effective reform of organization and cause correspondingly instead of becoming agent of European ce... Here, this paper suggests that CIFP tamp the ideal of fair play, re-establish the fair play value system, and conduct effective reform of organization and cause correspondingly instead of becoming agent of European centralism and American hegemonism. 展开更多
关键词 体育学 体育教育 纯粹性 体育文化
下载PDF
Epidemiology and risk factors for sports-and recreation-related eye injury:a multicenter prospective observational study 被引量:1
20
作者 Dong Eun Lee Hyun Wook Ryoo +3 位作者 Sungbae Moon Jae Yun Ahn Jung Ho Kim Jong-Yeon Kim 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2021年第1期133-140,共8页
AIM:To identify the epidemiologic characteristics of sportsand recreation-related eye injuries in a large metropolitan city and investigate risk factors associated with visual impairment.METHODS:We performed a multice... AIM:To identify the epidemiologic characteristics of sportsand recreation-related eye injuries in a large metropolitan city and investigate risk factors associated with visual impairment.METHODS:We performed a multicenter prospective observational study on patients using the regional eye injury registry data.This study included patients with sportsand recreation-related eye injury in four tertiary teaching hospitals in Daegu,Republic of Korea,from August 2016 to July 2018.The primary outcome was visual impairment at the first hospital visit.Distributions of sex,age,place,and causative materials were analyzed according to causative activities.To examine the association between causative activities and visual impairment,a Logistic regression analysis was used.RESULTS:Of the 349 sports-and recreation-related eye injuries,soccer was the most common causative activity,with 21.8%(n=76).Sports-and recreation-related eye injuries occurred mainly in teenagers,individuals in their 20 s,and men.Badminton and soccer were significantly associated with visual impairment at the first hospital visit compared with combat sports[(adjusted odds ratio(AOR),5.18;95%confidence interval(CI),1.67-16.09 for badminton and AOR,3.87;95%CI,1.36-10.99 for soccer].CONCLUSION:Intervention efforts such as deployment of protective eyewear in sports facilities and schools and promotion of wearing protective eyewear during these activities in teenagers and individuals in their 20 s are mandatory. 展开更多
关键词 EPIDEMIOLOGY eye injury sports injury PREVENTION
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部