三维适形放射治疗对犬自发性前列腺增生的前列腺体积的作用研究

目的：探索三维适形放射治疗(3-DCRT)对犬自发性前列腺增生症的前列腺体积的作用。方法：选择7~15岁老年犬自发性BPH模型。经直肠B超测量前列腺横径、前后径和长径,根据《国家新药研究指南》,前列腺三径的乘积＞18 cm3 者作为合格的BPH实验动物。应用3-DCRT直接照射前列腺。以90％的等剂量曲线包绕整个前列腺,单次剂量2Gy,总剂量14Gy,应用6MV-X线完成照射。经直肠B超测量前列腺横径、前后径和长径,乘以系数0.52,计算出前列腺体积,进行照射前、照射后1月比较。结果：照射前前列腺横径、前后径和长径分别为3.68?.44、2.65?.39、2.89?.45cm,照射后1月分别为3.04?.26、2.13?.22、2.28?.38cm,照射后1月显著缩小（p<0.01或0.05）。照射前、照射后1月,前列腺体积分别为14.88?.50、7.80?.45cm3,缩小非常显著（p<0.01）结论：3-DCRT可以显著缩小前列腺体积,从而可能改善尿路梗阻和LUTS。     

量子共振检测仪诊断肿瘤130例

采用量子共振检测仪,通过头发测定了80例恶性肿瘤患者、50例良性肿瘤患者和50例无肿瘤者的免疫功能、肿瘤、恶性肿瘤、良性肿瘤、发锌和病毒感染的代码量价。结果表明：癌症患者的免疫功能明显低于良性肿瘤患者和无肿瘤者（P＜0．001）,而病毒感染程度和发锌的含量明显高于良性肿瘤患者和无肿瘤者（P＜0．001）;恶性肿瘤患者的免疫功能过低、病毒感染程度和发锌含量过高,这些将是诱发癌症的重要因素,也是诱发良性肿瘤的因素。通过对受试者上述指标的检查,将为肿瘤的早期发现和早期诊断提供可靠的依据。     

中性水介质中表面活性剂促进的Aldol反应

报道一种绿色环保的Aldol反应体系.烯醇硅醚与醛在不同类型的表面活性剂促进下可以进行Aldol反应,在阴离子表面活性剂的促进下,可得到产率为86%的加成产物,且具有一定的非对映异构选择性.分离出加成产物后,表面活性剂和水溶液可以重复使用.     

论冲突管理与组织绩效

介绍了冲突的类型和来源，阐述了冲突谈判的策略，指出冲突管理是组织管理中最重要的环节，冲突管理的能力对管理者而言，是最重要的管理技能之一。     

构建资助者与贫困大学生良性互动机制的研究

要构建资助者与贫困大学生之间的良性互动机制,首先要善于引导资助者的社会责任感、同情心、满足感等心理需求;其次是端正受助者心态,使其正确认识资助者的动机,珍惜机会,保持艰苦朴素作风,心存感激之情;最后是政府、新闻媒体和学校要积极搭建平台,确保资助者的资助积极性,以保持非正式支持体系的长效性。     

Identification of proteins in human prostate tumor material by two-dimensional gel electrophoresis and mass spectrometry

Protein patterns in cells collected from benign prostatic tissues and prostate carcinomas were analyzed using two-dimensional polyacrylamide gel electrophoresis and mass spectrometry. Polypeptide expression was evaluated by computer-assisted image analysis (PDQUEST). Proteins expressed by prostate tumors were identified via in-gel digestion and subsequent matrix-assisted laser desorption/ionization mass spectrometry. In addition to cytoskeletal and mitochondrial proteins, a 40-kDa protein was identified as prostatic acid phosphatase (PAP). PAP expression decreased approximately twofold between benign and malignant tissue. Increased expression of heat shock protein 70 and decreased expression of tropomyosin 1 were also observed in the malignant tissue. The analysis of prostate material by two-dimensional gel electrophoresis and mass spectrometry shows that particular proteins are of interest as markers of disease. Received 18 December 2000; accepted 4 January 2001     

冷冻治疗皮肤病疗效评价

为比较液氮冷冻疗法对多种皮肤病的治疗效果,377例皮肤良性肿瘤及慢性限局性皮肤病进行了疗效观察.结果显示,两组疾病冷冻治疗均有较好疗效,总有效率为85.15%;两组疾病总有效率比较有显著性差异,皮肤良性肿瘤明显优于慢性限局性皮肤病,更合适于选择冷冻治疗.     

阻燃材料的绿色化初探

阻燃剂是高分子材料助剂研究中的一个热点 ,阻燃材料的环境安全性越来越受到重视。从环境保护和人类安全的角度出发 ,指出目前常用的卤系阻燃剂不具备环境安全性 ,无机氢氧化铝阻燃效率低。通过分析、举例探讨了几种无卤、高效、低烟、低毒的阻燃剂 ,为解决高分子阻燃材料的绿色化问题提供了可能     

合成愈创木酚环境友好催化剂的研究

研究了甲酵与邻苯二酚反应合成愈创木酚的环境友好催化剂．553K的温度下，在主要组分为A1TiSb—NaO的催化剂上，愈创木酚的选择性达到了98％以上，反应100h邻苯二酚的转化率保持在70％以上．考察了金属Na、K、Li和Mg对催化剂活性和选择性的影响．结果表明K和Na有利于提高催化剂的活性．钠铝的原子比为0．0l时催化刑的活性最高．Li和Mg加入催化剂则降低了催化剂的活性．     

Going Green from the Inside: Insider Action Research at the Volvo Car Corporation

Various forms of action research have been proposed as remedies for the one-sided focus on theoretical interests existing in Business School research. Among other conceptual elaborations, Insider Action Research (IAR) suggests that action research needs to be supported by an insider's view of activities in order to achieve any substantial contribution to practice and theory. Even though the IAR model is potentially capable of overcoming a number of practical, political, and epistemological problems, it has been explored relatively little in terms of practical examples and lessons. This paper presents the account of an Insider Action researcher at the Volvo Car Corporation, aimed at studying the development of environmental strategies and “eco-benign” automobiles “from the inside”. The paper suggests that even though IAR remains a promising model, the political ingenuity and savoir-faire of the insider action researcher must not be underrated.