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1.
目的:探讨超负荷运动骨折致骨骼坏死患者的临床特点及调节激素生长刺激治疗方案。方法:分析2013年9月~2014年1月收治31例超负荷运动骨折致骨骼坏死患者的临床资料,总结超负荷运动骨折致骨骼坏死患者的临床特点及调节激素生长刺激治疗方案。结果:31例患者骨骼坏死后早期表现为骨骼受伤部位不适、神经疼痛等,逐渐出现意识变差、神经系统压迫性受损的表现,予早期骨骼固定、骨骼按摩、骨骼触感恢复及骨骼神经恢复等治疗,通过激素生长刺激作用,调节激素对于人体的刺激,使得坏死骨骼生长,31例患者住院1~40 d,11例好转,13例骨骼坏死部分恢复,2例骨骼坏死全部恢复。结论:超负荷运动骨折致骨骼坏死有很强的破坏性,临床表现为骨骼和相关神经衰竭,恢复率低,目前暂无特效调节激素生长刺激治疗方案,及早采取积极的治疗措施:如早期多次骨骼触感恢复或加骨骼神经恢复、大剂量激素的应用对骨骼坏死的救治和改善有重大作用。 相似文献
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目的:研究PM2.5不同污染等级对有氧代谢运动肺部感染特性,为PM2.5污染下预防肺部感染提供有效防护和锻炼指导。方法:以至少有2年晨练经历的436名锻炼爱好者为研究对象,每天坚持锻炼1小时,通过为期3个月的跟踪测试,分析不同PM2.5污染对于有氧代谢运动者的肺部感染影响。结果:全组有氧代谢受试对象共436例,PM2.5轻度污染,产生明显肺部感染的52例,感染率为11.9%,PM2.5中度污染下,产生明显肺部感染的104例,感染率为23.9%,PM2.5重度污染下,产生明显肺部感染的150例,感染发生率为34.5%。且肺部受感染后,感染症状不典型。X线检查结果特征表现为:41%受试对象表现为小片状阴影阻塞性肺炎,59%受试对象表现为大片浸润样阴影阻塞肺不张。结论:PM2.5污染对肺部感染影响较大,PM2.5中度以上污染,肺部感染概率上升,感染结果严重,应减少不必要的户外运动。 相似文献
3.
赛艇运动是以有氧能力为主的耐力性体能类项目,糖的有氧代谢在其供能系统中占有重要地位。赛艇运动员在运动前、中、后进行合理补糖,有助于运动能力的提高,延缓疲劳的出现和加速技能的恢复,补糖对赛艇运动员具有重要意义。 相似文献
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跆拳道运动员机体能量代谢水平的高低直接影响运动员成绩。为了更好的提高跆拳道运动员的身体机能及运动成绩,寻找新的训练方法。通过文献综述资料法,专家访谈探析跆拳道运动的功能特点及高原训练对人体能量代谢的影响。研究发现：跆拳道运动项目,以无氧功能系统为主;同时,功能系统是其基础,有氧功能能力的大小是运动最大限度发挥无氧代谢能力的前提和保证。经过高原训练后,人体的肺部,心血管,血管,骨骼肌等会发生一些生理适应变化,从而不仅能大幅度提高机体的有氧代谢能力而且还能提高无氧代谢能力,故建议跆拳道运动员可选择适当时机进行高原训练。 相似文献
6.
目的:探讨鼻黏膜原发性恶性黑色素瘤的MRI/MSCT的影像特点,提高诊断正确率。方法:搜集广西梧州市红十字会医院2012年1月至2018年5月经病理证实的17例鼻黏膜原发性恶性黑色素瘤,MSCT平扫+增强扫描6例;MSCT平扫+MRI扫描11例,分析其影像表现特点。结果:17例患者MSCT平扫中,位于鼻腔12例,鼻咽2例,鼻窦3例;均呈膨胀性生长,形态不规则;肿物密度多呈不均匀的软组织影,未见钙化,4例病灶内见少量出血、坏死;侵犯周围组织15例,其中10例出现骨质吸收、破坏;出现淋巴结转移5例。11例MRI检查中T1WI呈高信号,T2WI呈低信号表现3例;T2WI呈等、稍低信号,T1WI呈等、稍高信号的2例,T2WI、T1WI均呈稍高、高、等混杂信号6例,DWI均呈高信号。MRI及MSCT增强扫描明显不均匀强化6例,轻中度不均匀强化11例。结论:鼻黏膜原发性恶性黑色素瘤在MRI表现有一定的特征,MSCT虽无明显特征,但在病灶对骨质破坏表现上有重要诊断价值,两者应用可提高诊断正确率,为临床分期及治疗提供帮助。 相似文献
7.
《科学中国人》2016,(11)
目的:探讨CT及MRI在盆腔结直肠癌术前TN分期中的应用价值。方法:筛选2014年12月至2015年12月我院收治的盆腔结直肠癌患者41例,作为研究对象。所有患者均经手术证实为盆腔结直肠癌,术后组织病理明确TN分期结果,患者术前2~3d接受盆腔CT及MRI平扫及增强扫描,根据影像结果进行术前TN分期,并与术后病理结果进行比较。结果:螺旋CT术前T分期评估正确33例,正确率为80.49%,与病理分期结果比较呈中高度一致;MRI评估T分期正确37例,正确率为90.24%,与病理分期结果比较呈高度一致;41例患者N分期明确淋巴结转移18例,CT、MRI评估准确率、敏感性、特异性比较无显著差异,P0.05,不具有统计学意义。结论:CT、MRI均可用于盆腔结直肠癌术前的TN分期,但MRI能够更有效的提高结直肠癌术前T分期准确性,可指导临床治疗及手术方案的准确制定。 相似文献
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目的:探讨术后康复运动对分化型肺癌内分泌系统调节影响。方法:以107例进行过肺癌手术的患者为受试对象,随机将患者分为4组,分别进行慢走,康复太极拳,瑜伽,康复体操等4种不同的康复运动,进行为期8周的康复测试,比较不同术后康复运动对分化型肺癌的康复治疗作用,分析了TSH对肺癌康复治疗效果,采用垂体激素的刺激和康复指数作为判定基准,评价不同康复运动的效果。结果:进行慢走,康复太极拳,瑜伽三种康复运动后,患者的康复指数均随运动周数增加,呈现不同程度的递增趋势,而进行康复健美操运动后,康复指数无明显变化。结论:慢走、康复太极拳、瑜伽三种康复运动对垂体激素调节效果明显,对肺癌康复有积极促进作用。 相似文献
9.
目的:探讨术后康复运动对分化型肺癌内分泌系统调节影响。方法:以107例进行过肺癌手术的患者为受试对象,随机将患者分为4组,分别进行慢走、康复太极拳、瑜伽、康复体操4种不同的康复运动,进行为期8周的康复测试,比较不同术后康复运动对分化型肺癌的康复治疗作用,分析了TSH对肺癌康复治疗效果,采用垂体激素的刺激和康复指数作为判定基准,评价不同康复运动的效果。结果:进行慢走、康复太极拳、瑜伽3种康复运动后,患者的康复指数均随运动周数增加,呈现不同程度的递增趋势,而进行康复健美操运动后,康复指数无明显变化。结论:慢走、康复太极拳、瑜伽3种康复运动对垂体激素调节效果明显,对肺癌康复有积极促进作用。 相似文献
10.
目的:对比分析肝脏增强CT检查与肝脏MRI检查在诊断肝癌方面准确率。方法:本次研究对象为肝胆外科就诊的90例患者,均经肝胆彩色B超初筛确诊为肝脏中小型占位病变,分别经肝脏增强CT检查与肝脏MRI检查,并经病理确诊,以病理诊断为金标准评价检查方法的准确率。结果:肝脏MRI扫描准确率明显高于肝脏增强CT检查,有统计学意义(P0.05)。结论:肝脏MRI检查方法诊断肝癌的准确率高于肝脏增强CT检查方法,可作为临床诊断肝癌的首选方法。 相似文献
11.
Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
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. 相似文献
12.
A joint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology his co-workers from Norway US 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 the National Academy of Sciences on September .…… 《中国科学院院刊(英文版)》2008,22(1):6-7
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. 相似文献
13.
Caroline Haythornthwaite 《The Information Society》2001,17(3):211-226
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. 相似文献
14.
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. 相似文献
15.
Puay Tang 《The Information Society》1998,14(1):19-31
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. 相似文献
16.
Milton Mueller 《The Information Society》2001,17(3):151-163
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. 相似文献
17.
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.…… 《中国科学院院刊(英文版)》2008,22(1):15-15
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. 相似文献
18.
《中国科学院院刊(英文版)》2014,(3)
<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 相似文献
19.
Chinese Scientists Use Earth Observation Technologies to Study and Protect Wild Camels 总被引：1，自引：0，他引：1
《中国科学院院刊(英文版)》2014,(3):267-268
<正>Chinese scientists plan to apply Earth Observation technologies to protect the critically endangered wild camels(Camelus ferus).With the help of remote sensing,satellite positioning,geographical information system and wireless sensors networks,they will be able to access the distribution and population of the wild camels and protect their habitats.The project will be carried out by the International Research Center for Wild Camel Conservation,which was jointly established earlier this year by the Institute of Remote Sensing and Digital Earth(RADI)of the Chinese 相似文献
20.
WANG Sijia 《中国科学院院刊(英文版)》2014,(2):192-194
<正>The Paul Gerson Unna Research Group on Dermatogenomics was founded in October 2012 at the Partner Institute for Computational Biology.The ultimate goal of the group is to understand the biology of skin and skin appendages. 相似文献