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1.
正事物往往有两方面。肉毒毒素的毒性令人恐惧,其阻断神经传递、麻痹肌肉的特点可致人中毒,但在一定剂量的局部注射下,这一特点又使之成为"美容良药",令注射部位肌肉麻痹,从而不会形成皱纹。1986年,加拿大一位眼科教授发现肉毒毒素(Botox)能让患者眼部的皱纹消失,从而引发了美容史上的"Botox革命"。后来,它被医学界用来治疗面部痉挛和其他肌肉运动紊乱症。由于肉毒毒素具有致命毒性,所以用于美  相似文献   

2.
脑性瘫痪是一个世界难题,目前仍无特效治疗方法治愈脑瘫,如今治疗脑性瘫痪,多采用中西医结合、传统康复与现代康复相结合,全方位、多角度的综合康复治疗,其方法包括康复训练、作业疗法、语言训练等康复训练,又有针刺艾灸治疗、穴位注射治疗、中药封包、中药水疗、中药口服、小针刀等传统中医治疗,还有营养神经药物,如胞磷胆碱、脑蛋白水解物、小牛血清白蛋白、鼠神经生长因子、氢溴酸东莨菪碱、川芎嗪注射液、A型肉毒毒素等,也有选择性脊神经后根切除术、选择性脊神经后根非切断性机械灭活、选择性周围神经切断术及矫形手术等手术治疗。而痉挛型脑瘫,占脑性瘫痪患儿60%-70%,故对于其治疗方法的探讨,意义重大。  相似文献   

3.
步态康复训练的效果在很大程度上依赖于运动系统的好坏,而运动系统在较大程度上取决于感觉系统对外界环境的有效反应,感觉输入可以正负反馈运动的输出。~([1,2])踝足矫形器(ankle-foot orthosis,AFO)通过纠正足下垂、增加本体感觉输入,进而改善偏瘫患者的异常步态。单独运用踝足矫形器或结合其他治疗,如A型肉毒毒素注射、带楔鞋和中医治疗等,都能改善偏瘫患者步行能力。踝足矫形器在国内尚未普及,在临床上的效果较难评估,是康复领域现阶段的主要问题。  相似文献   

4.
目的通过观察AO股骨钉旁交锁髓内钉(UFN)治疗股骨干粉粹性骨折合并同侧股骨颈骨折的疗效,探讨同侧股骨颈、干骨折的损伤机制、特点及应用UFN治疗同侧股骨颈、干骨折的优越性、手术要点及注意事项。方法2001年1月~2003年12月使用AO产UFN治疗11例同侧股骨颈、干骨折患者,手术使用骨科牵引床,C形臂X线机,采用闭合或小切口切开复位、锁定技术。结果所有患者随访8~36个月,平均15个月。除1例股骨颈骨折为GrardenⅣ型合并同侧股骨干骨折患者术后8个月出现股骨头坏死,1例股骨干C3型骨折术后7个月发现骨折延迟愈合,经拔除远端锁钉改为动力固定5个月后骨折愈合,其余均Ⅰ期临床愈合。平均股骨颈骨折临床愈合时间为5.1个月;股骨干骨折临床愈合时间为6.9个月,Ⅰ期愈合率为81.82%。患肢关节功能优良。结论A0股骨钉旁交锁髓内钉(UFN)治疗同侧股骨颈、干骨折具有手术创伤轻、切口小、固定可靠、骨折愈合率高的优点,符合生物力学要求,是治疗股骨干粉碎性骨折伴同侧股骨颈骨折的理想方法。  相似文献   

5.
目的通过观察A0股骨钉旁交锁髓内钉(UFN)治疗股骨干粉粹性骨折合并同侧股骨颈骨折的疗效,探讨同侧股骨颈、干骨折的损伤机制、特点及应用UFN治疗同侧股骨颈、干骨折的优越性、手术要点及注意事项.方法2001年1月~2003年12月使用A0产UFN治疗11例同侧股骨颈、干骨折患者,手术使用骨科牵引床,C形臂X线机,采用闭合或小切口切开复位、锁定技术.结果所有患者随访8-36个月,平均15个月.除1例股骨颈骨折为GrardenⅣ型合并同侧股骨干骨折患者术后8个月出现股骨头坏死,1例股骨干C3型骨折术后7个月发现骨折延迟愈合,经拔除远端锁钉改为动力固定5个月后骨折愈合,其余均Ⅰ期临床愈合.平均股骨颈骨折临床愈合时间为5.1个月;股骨干骨折临床愈合时间为6.9个月,Ⅰ期愈合率为81.82%.患肢关节功能优良.结论AO股骨钉旁交锁髓内钉(UFN)治疗同侧股骨颈、干骨折具有手术创伤轻、切口小、固定可靠、骨折愈合率高的优点,符合生物力学要求,是治疗股骨干粉碎性骨折伴同侧股骨颈骨折的理想方法.  相似文献   

6.
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China's science enterprise by making S&T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party's Leading-member Group at CAS, which was held from 7 to 11 January in Beijing.  相似文献   

7.
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   

8.
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants."  相似文献   

9.
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   

10.
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   

11.
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   

12.
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   

13.
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   

14.
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   

15.
Prof. SUN Changpu from the CAS Institute of Theoretical Physics and coworkers from University of Basel in Switzerland have worked out a way --at least in theory --to split a beam of molecules according to their chirality. The technique involves passing the molecules through three different laser beams and is similar to the famous Stern-Gerlach effect, whereby a beam of atoms passing through a magnetic field is split in two according to the atoms' spin states (Phys. Rev. Lett. 99 130403).  相似文献   

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