开放医疗市场 强化政府责任 解决看病难

当前对医疗改革的批评较多,不少人认为是过度市场化的结果。但是,“过度市场化”的问题不能一概而论,可以从两个方面来分析,从医疗服务方面来说,有过度市场化的倾向;但是从医疗资源的配置或投入来说,市场又没有充分放开。所以不能简单的或笼统的把医改的问题归咎于市场化。该开放的医疗市场未开放,政府责任不到位,才是当前中国医疗改革的问题所在。     

大学生弱势群体的伦理社会处境分析与思考

随着高校招生规模的不断扩大,大学生中弱势群体的绝对数量也大大增加,成为高校必须正视、重视和关注的特殊群体.从共性角度对这一特殊群体面临的两大伦理困境:挫折感强和社会认同感弱进行了深层解析;从类特性的角度对其他伦理问题进行了有益的探究和思考.     

西方志愿者行为研究述评

志愿者行为是在组织背景下, 个体经过深思熟虑之后, 自愿对主动寻求帮助的对象实施的一种长期且无偿的帮助行为; 其形成和发展可以用功能理论、特质理论和多因素模型来解释。志愿者行为的测量工具主要有志愿功能量表、志愿精神问卷和志愿者行为问卷。研究者对人口统计学特征、人格变量、动机变量及组织因素等志愿者行为的前因变量及志愿者身心健康、社会收益等志愿者行为的结果变量的探讨比较深入, 但在概念明晰、理论整合、测量工具、取样探索等方面还有待进一步研究。     

心血管疾病发生的生物钟现象与时间治疗学

生物钟是生物为了适应其生存环境周而复始的变化（如昼夜变化、四季变化等）在长期进化过程中形成的机体固有节律。研究表明生物钟节律的异常参与了心血管疾病的发生、发展。因此通过研究血管疾病的发生与生物钟的关系,建立新的治疗方法,即时间治疗学,来治疗和预防心血管痰病。     

班级集体效能对初中生学业自我效能与学习倦怠的调节作用

采用学习倦怠、学业自我效能、班级集体效能问卷,选取26个班级的1125名初中生作为被试,运用多层线性模型探讨班级集体效能对学业自我效能与学习倦怠的影响。在控制性别和年级的影响后,结果发现:(1)班级集体效能与学习倦怠具有直接的关联:班级正向联合力越高,则学生的学习成就感越高;班级负向联合力越高,则学生的情绪与生理的消耗越严重;班级优秀成员的效能越高,则其他学生学习的成就感越低,师生关系越疏远、生理消耗越严重;而班级成员的自我效能越高,学生的学习成就感越高、情绪的损耗越小;(2)班级集体效能对学业自我效能与学习倦怠之间的关系具有显著的调节作用:班级的正向和负向联合力越强,则学业自我效能对师生疏离的负向影响就越弱;班级的负向联合力越强,则学业自我效能对情绪耗竭的负向影响就越小;优秀成员效能越高,则学业自我效能对学习低成就感的负向影响就越大;而成员自我效能强,则学业自我效能对师生疏离的负向影响也强。     

东莨菪碱对大鼠空间参考记忆和工作记忆的不同影响

观察东莨菪碱对空间参考记忆和空间工作记忆的编码、保持和提取过程的作用。应用Morris水迷宫实验测定大鼠的空间参考记忆和空间工作记忆,分别在训练的不同阶段腹腔注射东莨菪碱（1mg/kg）和相同容量的生理盐水,比较各东莨菪碱组和生理盐水组之间游泳潜伏期、路径长度、轨迹和游泳速度的差异。结果发现：与注射生理盐水相比,在训练前和探测实验前注射东莨菪碱的大鼠在探测实验中对目标象限不表现出空间偏爱,说明东莨菪碱干扰参考记忆的信息编码和提取过程;而在训练结束后注射东莨菪碱的大鼠探测实验的结果与生理盐水组相比没有显著差异,说明东莨菪碱对参考记忆的保持过程没有影响。在工作记忆实验中,无论第一次测试前、第一次测试后和第2次测试前注射东莨菪碱,均造成大鼠游泳潜伏期延长,说明东莨菪碱干扰工作记忆的编码、保持和提取过程。研究提示M受体在空间工作记忆和参考记忆中发挥不同作用     

当代农民价值取向现状的调查研究

本研究测量了来自江苏、福建、山东、辽宁、内蒙古和陕西 6个省份的586名农民的价值取向 ,并对其在年龄、教育水平、省份和婚姻状况等方面的特点进行了分析 ,结果表明 :(1 )中国农民的价值取向总体上是积极向上的 ,他们在重视正义公理、公共利益和法律规范的同时 ,也重视学习工作的重要价值 ;(2 )不同亚群体农民的价值取向之间存在一定的差异。     

Drug discrimination under concurrent variable-ratio variable-ratio schedules

Pigeons were trained to discriminate 5 mg/kg pentobarbital from saline under concurrent variable-ratio (VR) VR schedules, in which responses on the pentobarbital-biased lever were reinforced under the VR schedule with the smaller response requirements when pentobarbital was given before the session, and responses on the saline-biased key were reinforced under the VR schedule with the larger response requirements. When saline was administered before the session, the reinforcement contingencies associated with the two response keys were reversed. When responding stabilized under concurrent VR 20 VR 30, concurrent VR 10 VR 40, or concurrent VR 5 VR 50 schedules, pigeons responded almost exclusively on the key on which fewer responses were required to produce the reinforcer. When other doses of pentobarbital and other drugs were substituted for the training dose, low doses of all drugs produced responding on the saline-biased key. Higher doses of pentobarbital and chlordiazepoxide produced responding only on the pentobarbital-biased key, whereas higher doses of ethanol and phencyclidine produced responding only on this key less often. d-Amphetamine produced responding primarily on the saline-biased key. When drugs generalized to pentobarbital, the shape of the generalization curve under concurrent VR VR schedules was more often graded than quantal in shape. Thus, drug discrimination can be established under concurrent VR VR schedules, but the shapes of drug-discrimination dose-response curves under concurrent VR VR schedules more closely resemble those seen under interval schedules than those seen under fixed-ratio schedules. Graded dose-response curves under concurrent VR VR schedules may relate to probability matching and difficulty in discriminating differences in reinforcement frequency.     

社会因素对剖宫产率的影响

近二三十年来,剖宫产率在世界范围内不断升高。究其原因,除了医学因素外,社会因素起着重要作用,从社会经济发展,社会科学文化水平、社会习俗观念、法律、医疗道德、国家计划生育政策、医学教育等多个角度分析了社会因素对剖宫产率的影响,并就如何发挥社会因素的积极作用,消除和避免其消极作用,使剖部率维持在合理的范围内进行了讨论。     

Decursin from Angelica gigas mitigates amnesia induced by scopolamine in mice

We previously reported that a total methanolic extract of the underground part of Angelica gigas Nakai (Umbelliferae) (here-in-after abbreviated AG) significantly inhibited acetylcholinesterase (AChE) activity. We characterized 12 coumarin derivatives including both decursin and decursinol from extracts of AG. In this study, we evaluated the anti-amnestic activity of decursin, a major coumarin constituent isolated from AG, in vivo using ICR mice with amnesia induced by scopolamine (1 mg/kg body weight, s.c.). Decursin, when administered to mice at 1 and 5 mg/kg body weight i.p., significantly ameliorated scopolamine-induced amnesia as measured in both the passive avoidance test and the Morris water maze test. Moreover, decursin significantly inhibited AChE activity by 34% in the hippocampus of treated mice. These results indicate that decursin may exert anti-amnestic activity in vivo through inhibition of AChE activity in the hippocampus.