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1.
为探讨力平脂对血液流变学的影响，选择了４６例高脂血症及／或各类心脏病患者，服力平脂胶囊０．１，ＴｉＤ，连服二月为一疗程（治疗组），选择２３例高脂血症及／或各类心脏病患者，服金水宝胶囊０．９９，Ｔｉｄ，连服二月为一疗程（对照组），对比观察对不同性别病人的红细胞压积、血沉、全血粘度（从高切到低切）的影响，发现两组男性患者治疗后的红细胞压积和血沉的改变差异不显著，全血比粘度治疗组明显优于对照组，女性患者 相似文献
2.
自Ｔｓｕｎｏｄａ等对日本山羊碱性磷酸酶（Ｓｃｒｕｍａｌｋａｌｉｎｅ ｐｌｏｓｐｇａｔａｓｅ，ＡＬＰ，Ｅｃ３．１．３）同工酶进行研究，提出有５种同工酶（Ａ，Ｂ，Ｃ，Ｄ，Ｅ）后，有关山羊ＡＬＰ的报道还见于王杰等。Ｔ．Ｓｈｏｔａｋｅ等、郭春华等，认为山羊ＡＬＰＢ具有多态性。本文将叙述柴达木山羊ＡＬＰ同工酶及其多态性的研究结果。１ 材料和方法１．１ 实验动物 随机选取柴达木山羊１２０只作为试验羊。试验羊为终年放牧饲养，放牧地的海拔为２８００－３２００ｍ。１．２ 血样采集 于出牧前从山羊颈静脉… 相似文献
3.
用大肠杆菌（Ｅ．ｃｏｌｉ）乳糖发酵菌株（Ｌａｃ＾＋）,从基因水平探索元极堂内三元场的诱变效应。实验菌经二次处理,初步显示元极堂内三元场能诱发Ｅ．ｃｏｌｉ乳糖发酵基因突变,其突变率为２×１０＾－３￣０．１（物化因子诱变率１０＾－６￣１０＾－５）。突变率是高的,效果是明显的,从而为元极堂内三元场诱变育种提供了理论依据。 相似文献
4.
三种鹭血液生理生化指标比较研究 总被引：6，自引：0，他引：6
用常规方法对人工饲养的３种鹭进行２１个基础上生理生化指标测定。结果表明：红细胞总数（ＲＢＣ）、红细胞比积（ＰＣＶ）、血红蛋白量（ＭＣＨ）、红细胞平均体积（ＭＣＶ）、血红蛋白浓度（ＭＣＨＣ）以及血清总蛋白（ＴＰ）、血清白蛋白（ＡＬＢ）、血清球蛋白（ＧＬＯ）、血清钾（Ｋ＾＋）均以池鹭为最高。在不同日龄夜鹭中,血红蛋白相差不明显,而血液生理常值低日龄销高。３种鹭血清钠（Ｎａ＾＋）相似,氯化物（Ｃ１＾－） 相似文献
5.
高脂血症是指血液中的总胆固醇（ＴＣ）及低密度脂蛋白胆固醇（ＬＤＬ－Ｃ）增高，或甘油三酯 （ＴＧ）增高，或二者兼有。高脂血症是动脉粥样硬化及冠心病的主要诱因之一，其发生与遗传，内分泌紊乱有关，但多数与饮食密切相关。以下介绍一些降脂食品供您选食，以求达到膳食平衡、促进健康的目的。 １．每日膳食应选择中等量的碳水化合物（米饭、面食等）及低脂肪（油、肥肉、油炸食品等）的食品，这比低碳水化合物（吃饭很少）、高脂肪的膳食效果要好。 ２．控制食用油的摄入量，每天２５克左右。为了减少油脂的摄入量，可多吃些凉拌、蒸… 相似文献
6.
观察了力平脂对高脂血症者的治疗作用和安全性．确诊高脂血症者６８例，力平脂，０．１，Ｔｉｄ，服一个月为一疗程后，血清总胆固醇（ＴＣ）平均降低２０．９８％，甘油三酯平均降低５１．８８％，ＨＤＬ－Ｃ平均升高１０．２６％，ＬＤＬ－Ｃ平均降低１２．５７％，ＡｐｏＡ１平均升高２．２４％，ＡｐｏＢ平均降低２１．１０％，从调血脂的个体疗效分析，力平脂降低ＴＣ的总有效率８４．６１％，降低ＴＧ的总有效率９５．２４％，升高ＨＤＬ－Ｃ的总有效率６１．７７％，降低ＬＤＬ－Ｃ的总有效率为５５．８８％，升高ＡｐｏＡ１的总有效率３８．２４％，降低ＡｐｏＢ的总有效率７７．９４％．提示：力平脂治疗高脂血症者，对降低ＴＣ，ＴＧ，ＬＤＬ－Ｃ，ＡｐｏＢ和升高ＨＤＬ－Ｃ，ＡｐｏＡ１均有明显效果，其中降低ＴＧ的疗效尤为突出，副作用轻微．临床实践表明：力平脂是一个疗效高、安全、服用方便的调血脂新药 相似文献
7.
首先对处理布尔函数的Ｗａｌｓｈ变换进行了修改，使其能应用于多输出函数ｆ（ｘ），：ＧＦ（２）＾ｎ→ＧＦ（２）＾ｍ，（１＜ｍ＜ｎ）；其次对多输出函数的退化性、线性结构、非线性性和相关免疫性等密码学性质进行了讨论。 相似文献
8.
短裙竹荪多糖清除O^—.2及对人工细胞膜自由基氧化的影响 总被引：3，自引：0，他引：3
短裙竹荪「Ｄｉｃｔｙｏｐｈｏｒａ ｄｕｐｌｉｃａｔａ（Ｂｏｓｅ）Ｆｉｓｈｅｒ」经热水抽提,乙醇沉淀,Ｓｅｖａｇ法去蛋白,乙醇分级分离,再经ＤＥＡＥ－纤维素柱层析得多糖组分ＰＳ。在体外产生Ｏ＾－．２的反应体系中,竹荪多糖组分ＰＳ在较低浓度下（〈２００ｍｇ／Ｌ）具有清除Ｏ＾－．２的作用,而在较高浓度下（〉２００ｍｇ／Ｌ）作用不明显。同时用荧光法研究了竹荪多糖组分ＰＳ对人红细胞膜脂质过氧化的影响,结果表 相似文献
9.
目的：探讨西藏拉萨地区乙型肝炎病毒（ＨＢＶ）血清免疫学标记的组合模式。方法 共２２４８例ＨＢＶ血清样本，均以免疫酶联技术（ＥＬＩＳＡ）法检测５项指标。以聚合莲反应（ＰＣＲ）检测ＨＢＶ ＤＮＡ。为表述方便，设定血清ＨＢＶ免疫学标记检测项目第１－５项的排列顺序为（１）乙肝表面抗原（ＨＢｓＡｇ），（２）乙肝表面抗体（抗－ＨＢｓ），（３）乙肝ｅ抗原（ＨＢｓＡｇ），（４）乙肝ｅ抗体（抗－ＨＢｅ），（５）乙肝 相似文献
10.
高血压病左室肥厚与部分神经体液因素的相关性 总被引：1，自引：0，他引：1
为探讨高血压病左室肥厚与神经体液因素及室性早博（ＶＰＢ）之间的关系,将１８０例病人分３组：高血压病伴左室肥厚６０例为Ａ组;单纯高血压病６０例为Ｂ组;其他原因所至的左室肥厚６０例为组。对比观察心率为异、肾素（Ｒｅｎ）、血管紧张素（ＡＴ－Ⅱ）、醛固酮（Ａｌｄ）、胰岛素峰值（Ｉｎｓ）２４小时动态心电图和血压等指标。结果表明：（１）Ａ组病人交感神经张力明显增高,迷瞳神经活性下降不明显;交感神经张力增高与室 相似文献
11.
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
12.
《中国科学院院刊(英文版)》2008,22(1):2-3
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
13.
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
14.
《中国科学院院刊(英文版)》2008,22(1)
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
15.
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
16.
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
17.
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
18.
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
19.
Leah A. Lievrouw 《The Information Society》2000,16(2):155-159
This essay focuses on universal service and the Internet as means to support social and political participation. The emphasis on access to telecommunications systems in conventional approaches to universal service is contrasted with access to content. A model of the information environment is described that accounts for the roles of content and conduit, both of which are necessary conditions to achieve true access. A method is outlined for employing information indicators to observe or measure the information environment. 相似文献
20.
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