共查询到20条相似文献,搜索用时 62 毫秒
1.
《西藏科技》2021,(5)
目的探究CT值对微通道经皮肾镜钬激光治疗小儿单侧肾结石疗效的影响。方法回顾性分析2017年—2020年西藏自治区人民医院泌尿外科收治的54例肾结石患儿(年龄14岁)在B超引导下行微通道经皮肾镜碎石术的临床资料。根据患儿术前CT值分为A组28例(CT值800U)及B组26例(CT值800U)以探讨两组一般资料、手术情况、术后并发症及结石清除率等。结果 A组患者术后留置肾造瘘管时间、手术时间、术中出血量、术后住院时间均大于B组,结石清除率小于B组,差异具有统计学意义(P0.05)。结论相比较术前肾结石CT值800患儿,CT值800U患儿术后结石清除疗效更佳,安全性更高,术者可根据患者术前CT值对患儿手术疗效、手术安全性及手术困难程度做出更可靠的预测。 相似文献
2.
目的:探讨实时低剂量CT定位穿刺在经皮肾镜治疗无积水肾结石的临床疗效。方法:对2019年3月至2020年6月于广西中医药大学第一附属医院行实时低剂量CT定位穿刺造瘘术,并通过造瘘口行经皮肾镜碎石取石术的25例无积水肾结石患者进行分析。结果:25例患者均行单侧经皮肾镜碎石取石术,均能成功在CT室建立经皮肾通道,穿刺成功率为100%,共建立30个工作通道,其中单通道取石21例,双通道3例,三通道1例,3例患者行二期手术,一期结石清除率为88%(22/25),手术时间50 min~180 min,平均(88.80±26.03)min;术中出血量20 mL~150 mL,平均(70.00±34.40)m L;住院时间6~12天,平均(8.52±1.33)天。1例患者术后出现发热,经抗感染对症处理后体温恢复正常,2例患者在CT室行定位穿刺术后在等待手术的过程中由于活动较为频繁,导致造瘘管脱落,所有患者术后均未出现大出血,肾周脏器损伤等并发症。结论:实时低剂量CT定位穿刺在经皮肾镜治疗无积水肾结石中具有良好的临床疗效,其穿刺成功率以及一期结石清除率均较高,术中出血量少,手术时间短。采用低剂量CT定... 相似文献
3.
4.
《西藏科技》2021,(8)
目的综合分析并评价腹主动脉瘤腔内修复术与传统开放手术治疗的疗效。方法分开检索中国知网、万方、中国生物医学和百度学术(2013—2020)纳入腹主动脉瘤腔内修复术和开放术治疗的随机对照文献,对符合纳入标准文献用RevMan5.1进行Meta,分析两种手术术中输血量及术后患者住院天数。结果最终列入7项文献患者共696例。Meta分析表明:腔内修复术术中出血量明显少于开放术SMD-2.15,差异有统计学意义(P0.00001),腔内修复术术后住院天数明显少于开方术MD-6.23,差异有统计学意义(P0.00001)。结论患者术中出血量、术后住院天数方面腔内修复术治疗腹主动脉瘤较传统开放手术有明显优势。 相似文献
5.
6.
7.
8.
9.
以女性多见的甲状腺机能亢进是内分泌疾病中的常见病。目前,对甲亢的患者治疗主要采取抗甲状腺药物、放射性碘和手术3种治疗方法。 相似文献
10.
目的:研究在甲状腺腺瘤治疗中采用小切口微创手术治疗的临床治疗效果。方法:本研究选取的样本病例为广西玉林市中医医院收治的甲状腺腺瘤患者88例,以2015年8月~2016年5月为样本选取时段,以抽签分组方式进行分组,予以传统手术方式进行治疗的44例患者为对照组,予以小切口微创手术治疗的44例患者为实验组,经不同的治疗,对2组患者临床治疗效果进行比对和分析。结果:相比对于对照组,实验组患者的手术时间明显较短、切口长度明显较小,术中出血量明显较少,术后引流量明显较少,并发症发生率明显较低,同时住院时间明显较短,另外,实验组患者治疗后CRP、RBP、PA均明显较优,以上2组比对数据差异均P0.05,统计学具有意义。结论:在甲状腺腺瘤治疗中采用小切口微创手术方法具有确切的治疗效果,在临床上值得应用和推广。 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.
A research 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 in red wine-can improve the sensitivity of mice to the hormone insulin according to a report in the October issue of Cell Metabolism.…… 《中国科学院院刊(英文版)》2008,22(1):14-15
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. 相似文献
15.
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
16.
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
17.
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
18.
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
19.
Active biological molecules 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 therapy new nanodevice construction.…… 《中国科学院院刊(英文版)》2008,22(1):22-22
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. 相似文献
20.
《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