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251.
应用布氏锥虫伊氏亚种(Trypanosoma brucei evansi,T.b.e)体外药敏试验系统检查了国内6个T.b.e虫株和国外布氏锥虫指名亚种(T.b.b)对苏拉灭(Suramin)、贝尼尔(Berenil)、安锥赛(Antrycide)、咪唑苯脲(Imidocard)和硫胂聚氰胺(Cymelarsan)等5种抗锥虫药的敏感性。结果表明,该系统能准确测定不同虫株对各种药物的敏感性,与小鼠治疗试验结果基本相符,发现了国内抗贝尼尔和苏拉灭的T.b.e虫株。  相似文献   
252.
创新视角下的苏南模式   总被引:1,自引:0,他引:1  
苏南模式是政府主导不断进行制度创新的经济发展模式。当前的苏南模式是以吸引外资为导向的工业化道路,FDI对GDP有强烈的推动作用,但在没有考虑本土创新能力前提对FDI的作用是否会高估,FDI对于创新主体——本地企业又会产生什么样的影响。本文通过面板数据模型给出了实证研究。  相似文献   
253.
加工速度、工作记忆与心算能力的发展   总被引:4,自引:0,他引:4  
以243名10-18岁儿童为被试,研究了加工速度和工作记忆与儿童心算能力发展的关系.验证性因素分析表明,加工速度、工作记忆与心算能力之间存在显著的相关.结构方程建模表明这种显著相关的实质在于三者之间可能存在一个递进式发展过程,即工作记忆能力几乎可完全解释儿童心算能力的发展变化,而加工速度可解释2/3的工作记忆能力的发展变化.这表明工作记忆是心算能力发展的基础,而加工速度可能是工作记忆能力发展的基础,但后者尚需要进一步验证.  相似文献   
254.
现代公安院校图书馆信息服务面临巨大的机遇和新的挑战,如何抓住机遇,实现创新变革,值得公安院校图书馆工作者深思。文章通过对网络信息服务、建立网络资源导航库、个性化信息服务、数字参考咨询服务、远程读者教育等信息服务创新模式的探讨,揭示了图书馆信息服务的新的方式方法。  相似文献   
255.
基于浏览器 /服务器结构的《计算机应用》网络无纸化考试和管理系统是运用先进的管理思想和方法 ,进行规模考试的考试系统。该系统采用在线考试模式的设计思想 ,具有易于维修和运行稳定可靠的特点 ,实现了考试管理的创新  相似文献   
256.
目的研究氧乐氰菊的毒理作用.方法复制小白鼠、家兔氧乐氰菊中毒模型,测定小白鼠经口LD50、腹腔注射致死剂量和死亡时间,观察家兔中毒表现及病理改变.结果小白鼠经口LD50为36.64mg/kg.腹腔注射致死量为10mg/kg,腹腔注射后出现中毒时间为1min,出现死亡时间为4.5min,家兔中毒后出现系列的有机磷酸酯类、拟除虫菊酯类农药中毒的病理改变.结论研究结果对指导氧乐氰菊中毒的法医病理检验及毒物分析具有实用意义.  相似文献   
257.
This article details the history and development of the National Highway and Safety Administration's Standardized Field Sobriety Tests. They are reviewed in terms of relevant scientific, psychometric, and legal issues. It is concluded that the research that supports their use is limited, important confounding variables have not been thoroughly studied, reliability is mediocre, and that their developers and prosecution-oriented publications have oversold the tests. Further, case law since their development has severed the tests from their validation data, so that they are not admissible on the criterion for which they were validated (blood alcohol concentration), and admissible for a criterion for which they were not (mental, physical, or driving impairment). Directions for further research are presented.  相似文献   
258.
The true incidence of anaphylactic latex reactions and their associated morbidity and mortality remain poorly defined. It is noteworthy that a number of groups of individuals are at risk for anaphylactic reactions to latex during surgical and medical procedures; one of these groups is represented by the obstetric and gynaecologic population. A case of unrecognized first anaphylactic reaction to latex in a pregnant woman patient who underwent a caesarean section is presented. The diagnosis of latex allergy was missed and the following day the woman underwent a surgical re-exploration complicated by fatal cardiovascular arrest. At post-mortem examination, pulmonary mast cells in the bronchial walls and capillary septa were identified and a great number of degranulating mast cells with tryptase-positive material outside the cells was documented. A post-mortem latex-specific IgE test showed a high titre (14.00 U/I). Latex-induced fatal anaphylactic shock was recorded as the cause of death. This case highlights some of the practical difficulties in the initial diagnosis and subsequent investigation of fatal anaphylactic reaction during anaesthesia. Anaphylaxis is often misdiagnosed because many other pathologic conditions may present identical clinical manifestations, so anaphylactic shock must be differentiated from other causes of circulatory collapse. Although latex allergy usually has a delayed onset after the start of the surgery and most often a slow onset too, it should be always suspected if circulatory collapse and respiratory failure occur during surgery, even if the patient does not belong to a risk group; in the presence of identified risk factors for latex allergy a well-founded suspicion must be stronger, leading to an immediate discontinuation of the potential trigger.  相似文献   
259.
This article elucidates the latest developments in the ‘politics of memory’ regarding the military regime in Brazil. Only recently, I argue, has the Brazilian state abandoned its ‘politics of silence’ and started to actively champion the memory of the left‐wing ‘resistance’. This new strategy climaxed in a governmental crisis over a historic plan to establish a National Truth Commission to investigate human rights violations during the military regime. The article analyses key incidents and debates prior to the crisis, and contrasts the post‐dictatorial collective memory of Brazil with that of other Latin American countries.  相似文献   
260.
This article explores the significance of melancholy in two novels by Roberto Bolaño: Amuleto (1999) and Nocturno de Chile (2000). These aim to give narrative form to memories surrounding the violent dismantling of the political left that occurred in the 1960s and 1970s in Latin America. Yet in their melancholic articulation, they do so in a way that both haunts narratives of political transition and questions the consensus regarding literature's obsolescence. In so doing they advocate a mode of reading that confers futurity on past remnants and ruins, and that thwarts the transformation of political defeat into a trophy of the victor's triumph.  相似文献   
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