啦啦操训练对女大学生心肺功能的影响

本文采用实验法和数理分析法将20名身体素质无差异的女大学生分为实验组和对照组,对实验组的学生进行为期一年的啦啦操训练,通过对实验前后的2组女大学生的心肺功能指标进行测试,对测试结果进行T检验。检验结果表明,啦啦操训练能提高女大学生的心肺功能,在科学范围以及特定时间内,参加啦啦操训练的时间越久,对提高女大学生的心肺功能效果越明显。     

强污染下运动对心肺功能的影响分析

目的:分析强污染下运动对心肺功能的影响。方法:选取某市某校大学生志愿者60名,其中男生30名,女生30名,将其随机划分成四组,分别为强污染运动组、强污染对照组、低污染运动组、低污染对照组,每组20人,强污染运动组在强污染环境下进行Bruce方案,强污染对照组不进行运动,但与强污染运动组共同处于强污染环境下,低污染对照组不进行运动,但处于低污染环境下。结果:强污染运动组的安静心率、收缩压、舒张压、脉搏压、心功指数均高于强污染对照组与低污染对照组,且安静心率、脉搏压、心功指数与低污染对照组相比具有显著性差异(P0.05),与强污染对照组相比具有非常显著性差异(P0.01);收缩压与强污染对照组相比具有显著性差异(P0.05)。强污染运动组ESD、EDD、ESV、EDV、MSER以及MVCF均高于强污染对照组和低污染对照组,其中EDV与MVCF和低污染对照组相比,具有显著性差异(P0.05);EDV、MSER与强污染对照组相比,具有显著性差异(P0.05);MVCF与强污染对照组相比具有非常显著性差异(P0.01)。强污染运动组实验后FVC、FEV1、FEF25%-75%、FEF与实验前相比明显增加,且具有非常显著性差异(P0.01);MVV较实验后明显降低,且具有非常显著性差异(P0.01),而强污染对照组与低污染对照组实验前后均无显著性差异。结论:强污染运动下,运动对改善和提高心肺功能具有非常积极的作用。     

长期有氧运动对肥胖人群血脂调节的影响分析研究

目的:分析长期有氧运动对肥胖人群血脂调节的影响。方法:按照世界卫生组织(WHO)提供的肥胖标准,在某市某学校中选取30名肥胖大学生,将实验对象随机划分成实验组与对照组,各15名。实验组按照训练方法进行15周的有氧训练,同时在第一次和最后依次运动后立即对静脉血测血脂、血胰岛素、皮质醇等生化指标进行测试,另一组作对照,分别在15周前后对两组受试者的体成分、血脂、胰岛素、瘦素进行测试。结果:经15周有氧训练后,实验组体重、体重指数、体脂百分比、体脂含量均显著下降,(P0.05或P0.01),显著低于对照组(P0.05或P0.01),而取值体重略有增高。实验组血清TG、TC、LDL含量显著下降(P0.05或P0.01),HDL含量显著增加(P0.05);和对照组相比,血清TG、TC、LDL含量显著降低(P0.05或P0.01),HDL含量显著升高(P0.05)。实验组血胰岛素水平显著下降,和对照组相比显著降低(P0.01);实验组瘦素水平明显下降,和对照组相比显著降低(P0.05)。结论:长期有氧运动能够促进脂肪的分解代谢,使得血脂中各成分比例更有利于健康,调节肥胖人群内分泌,有助于减肥与身体健康。     

高糖量摄入与运动MDA指标水平的关系模型

目的:分析高糖量摄入与运动MDA指标的关系。方法:选取16名运动员,按照年龄、体重、运动级别随机划分成高糖摄入实验组和对照组,补充前后一个月分别进行功率自行车测试,测试总功,对运动员的RBC-GSH-PXRBC-SOD及血浆MDA的含量进行测试,分别测定不同高糖量摄入运动组和对照组中运动员机体血清中丙二醛(MDA含量,并进行运动前后自身对照比较。结果:实验组的总功、总功/LBW较补液前有明显提高(P0.05对照组各项指标均无统计学差异;摄入蔗糖后,安静时RBCMDA的含量两组间仍无显著性差异,实验组运动后即刻RBC-MDA含量明显低于对照组运动后水平(P0.05)实验组运动后RBC-SOD含量无显著性变化,实验组RBC-GSH-Px含量较运动前有明显提高(P0.05)同对照组无差异;摄入蔗糖后实验组RBC-GSH-Px的升高幅度显著高于对照组(P0.05)。结论:高糖量摄入增强运动自由基的代谢水平,提高了运动员的运动能力,抑制运动引发的自由基损伤。     

太极柔力球对女大学生健康影响的研究

本文采用文献资料法、测量法、数理统计法,选取60名高校女大学生进行18周的太极柔力球运动锻炼,并对她们的身体形态和机能、身体素质、自我概念、心境状态等指标进行研究。结果发现:长期练习太极柔力球,可以有效地改善学生身体形态,提高自身素质,完善自我概念,建立良好的心境状态。说明太极柔力球运动对女大学生的身心健康有积极的影响。     

网球运动对中老年糖耐量减低患者血糖的影响

目的:观察网球运动对中老年糖耐量减低患者血糖指标的影响。方法:将26名糖耐量减低患者随机分为对照组和实验组,实验组应用网球运动方法干预24周,对照组不作特殊干预,实验前后分别检测受试者空腹血糖、餐后2h血糖,统计分析各组数据。结果:与对照组比较,实验组空腹血糖、餐后2h血糖降低,具有显著性差异(P<0.05)。结论:网球运动能降低中老年糖耐量降低患者血糖,降低其转变为糖尿病患者的风险。     

分层次教学在高等医学院校医学英语中的应用

目的:对分层次教学在医学英语中的应用效果进行分析。方法:采用便利抽样方法选取某医科大学2016级护理学专业202名学生,将其随机分为实验组(n=102名)和对照组(n=100名),对照组采取传统的班级授课制,实验组实施分层次教学。将两组学生的期末考试成绩进行比较。结果:经过一年的医学英语学习后,实验组A、B、C层学生的成绩高于对照组。结论:实施医学英语分层次教学对学生来说,可以有效地激发学生的学习兴趣,因材施教,有助于学生医学英语能力的提高。     

关于健美操课程对学生运动机能影响的分析

目的:探讨健美操课程对学生运动机能的影响。方法:随机选取我校财经系2014级选修健美操运动学生50名,以及师范部无运动规律的学生50名作为研究对象,分别为观察组与对照组,检测研究对象的身体成分、骨密度指标等相关运动机能指标。结果:运动组男生骨强度指数(128.5±10.5),对照组为(93.5±8.9);运动组女生骨强度指数(110.5±11.4),对照组为(88.9±8.5),差异显著(P0.05),差异具有统计学意义。结论:健美操运动课程对学生身体骨密度存在积极作用,可提升学生运动机能,值得选修学习。     

康复治疗对乳腺癌患者术后恢复影响的临床试验

目的:是对乳腺癌患者术后恢复过程中康复治疗的临床效果。方法:以50名乳腺癌患者为研究对象,并将其平均分成实验组以及对照组,在手术前对两组的成员进行手术前的宣教以及评定,在手术之后,对对照组进行宣教和心理疏导,对实验组则进行一定的康复训练,在21天后对两组患者的水肿程度、外展功能以及上举功能上的状态进行评定,之后再对患者术后所产生的患侧上肢的水肿程度、皮下积液以及皮瓣坏死等并发症情况进行观察。结果:21天后的患肢功能评定状况,实验组的患者明显比对照组的好,术后上肢的功能和术后的并发症发生情况方面,也是实验组的患者比较优秀。结论:乳腺癌患者的术后恢复中,康复治疗具有十分显著的效果,并以本文的临床试验结果为依据,提出了针对乳腺癌患者术后恢复的三条建议,包括心理治疗、运动治疗以及营养治疗。     

PBL教学法结合LBL教学法在内科学教学中的应用探索

目的:探讨在内科学教学中应用PBL教学法结合LBL教学法的效果。方法:选取2013年5月至2014年5月期间我院的在校中职生80名,将其平分为对照组和实验组,对照组采取LBL教学法,实验组采取PBL与LBL联合教学,观察两组教学效果。结果:实验组理论、操作考核成绩以及学生对教学的评价明显优于对照组(P<0.05),同时实验组对教学满意的学生与教师对学生的评优率明显高于对照组(P<0.05),具有统计意义。结论:在内科学教学中应用PBL联合LBL教学方法,教学效果显著,值得推广。     

Students' Reactions to the Introduction of Videoconferencing for Classroom Instruction

This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors.     

Cooler temperatures inductive to locust outbreaks

Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007.     

Exploring Multiplexity: Social Network Structures in a Computer-Supported Distance Learning Class

A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction.     

The Role of Intermediating Institutions in the Diffusion of Electronic Data Interchange (EDI): How Industry Associations Intervened in Denmark, Finland, and Hong Kong

Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies.     

Low doses of a red wine ingredient figh diabetes in mice

Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said.     

How Electronic Publishers are Protecting Against Piracy: Doubts About Technical Systems of Protection

The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means.     

Rough Justice: A Statistical Assessment of ICANN's Uniform Dispute Resolution Policy

Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP.     

Prevalence of soft neurological signs in Chinese people

Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.     

Molecular motor assembly of a biomimetic system

Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction.     

Monoculture Rubber Plantations Have Negative Ef ects on Controlling Splash Erosion

<正>In Xishuangbanna,one of China’s most biodiverse regions,landscape has changed dramatically during the past three decades due to the conversion of tropical rainforest to rubber plantations.In steep areas,terraces are often constructed before planting rubber trees,which causes two important changes in the soil:the destabilization of soil in the bench terraces and the increased vulnerability of unvegetated riser faces to erosion.Few studies have documented the nature and intensity of erosion on bench terraces.Prof.LIU Wenjie and his colleagues from the Xishuangbanna Tropical Botanical Garden(XTBG)conducted a study in Menglun County(21°5′39″N,101°15′55″E),Xishuangbanna to evaluate the influence