首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   19722篇
  免费   2246篇
  国内免费   544篇
耳鼻咽喉   247篇
儿科学   296篇
妇产科学   259篇
基础医学   1652篇
口腔科学   298篇
临床医学   5205篇
内科学   1520篇
皮肤病学   88篇
神经病学   1402篇
特种医学   1283篇
外科学   1932篇
综合类   3452篇
现状与发展   1篇
一般理论   3篇
预防医学   2397篇
眼科学   228篇
药学   943篇
  252篇
中国医学   828篇
肿瘤学   226篇
  2024年   74篇
  2023年   521篇
  2022年   856篇
  2021年   1251篇
  2020年   1320篇
  2019年   936篇
  2018年   870篇
  2017年   979篇
  2016年   846篇
  2015年   818篇
  2014年   1726篇
  2013年   1969篇
  2012年   1331篇
  2011年   1279篇
  2010年   1047篇
  2009年   914篇
  2008年   863篇
  2007年   776篇
  2006年   640篇
  2005年   535篇
  2004年   427篇
  2003年   370篇
  2002年   299篇
  2001年   240篇
  2000年   201篇
  1999年   146篇
  1998年   134篇
  1997年   123篇
  1996年   126篇
  1995年   98篇
  1994年   81篇
  1993年   76篇
  1992年   95篇
  1991年   56篇
  1990年   52篇
  1989年   38篇
  1988年   43篇
  1987年   41篇
  1986年   30篇
  1985年   31篇
  1984年   47篇
  1983年   29篇
  1982年   24篇
  1981年   26篇
  1980年   23篇
  1979年   17篇
  1978年   17篇
  1977年   17篇
  1975年   13篇
  1971年   11篇
排序方式: 共有10000条查询结果,搜索用时 140 毫秒
51.
我国社区护士培养现状及对策   总被引:1,自引:0,他引:1  
对社区护士应具备的素质及其培养方法、培养内容及培养方式等进行综述,并对目前我国社区护士培养方面存在的问题进行分析,提出应重视、加强社区护士的培养和教育,建立健全多层次培养途径,优化课程体系,完善培养模式,加大培养力度,大力发展社区护理事业。  相似文献   
52.
实验教学改革与学生综合素质培养的实践   总被引:18,自引:3,他引:15  
在培养医学检验专业学生中 ,通过设置综合性、设计开放性实验 ,改革实验考核方法和内容 ,强化毕业实习 ,以深化实验室体制改革。以学生为中心 ,培养学生综合素质、创新精神和实践能力 ,全面推进教学质量提高  相似文献   
53.
The aims of this paper are to evaluate the training in out‐patients and in theatre after the recent changes in SpR training. A postal questionnaire was sent to 191 Specialist Registrars (SpRs) in England and Wales and 57 were returned (30%). There were temporal bone facilities within the hospital for 53 SpRs but only three used them because there were no temporal bones. Surgical training was more satisfactory than out‐patient training. Fewer general clinics and more specialized clinics are required, and consultant supervision is still patchy and needs attention.  相似文献   
54.
针刺配合康复训练改善脑卒中后吞咽障碍临床观察   总被引:6,自引:0,他引:6  
目的观察项针加康复训练对改善脑卒中患者吞咽障碍的治疗效果。方法将符合入选标准的60例脑卒中后吞咽障碍患者采用随机对照法,分为两组,每组30例,对照组进行常规康复训练,治疗组在常规康复训练基础上进行项针治疗。结果两组患者治疗后,洼田氏饮水试验疗效比较差异具有统计学意义(P〈0.05),说明治疗组疗效优于对照组。结论项针配合康复训练能改善脑卒中患者的吞咽功能,提高患者的生存质量,其效果优于单纯康复训练。  相似文献   
55.
运动训练联合基因治疗对肾性高血压大鼠肾功能的影响   总被引:1,自引:0,他引:1  
目的观察运动训练联合β1肾上腺素能受体基因治疗对肾性高血压大鼠血压、肾功能、肾脏前肾素原mRNA、肾脏β1受体mRNA和蛋白的影响,探讨其改善肾功能的机制。方法两肾一夹法制作肾性高血压模型,基因治疗采用经鼠尾静脉注射阳离子脂质体与β1反义寡核苷酸方法。检测大鼠血压、肾功能变化。半定量RT—PCR测定肾脏β1受体mRNA、前肾素原mRNA水平。Western印迹法测检肾脏β1受体的蛋白水平。结果与模型组比较,运动联合基因治疗可使血压下降并维持4周,血压下降最高达41mmHg;尿蛋白量[(45.82±6.56)比(29.12±5.22)mg/L,P〈0.01】、BUN[(13.10±2.62)比(9.05±1.84)mmol/L,P〈0.05]显著降低(P〈0.01,P〈0.05);内生肌酐清除率显著升高(P〈0.01);前肾素原mRNA、β1受体mRNA、蛋白表达水平显著降低(P〈0.05)。结论运动训练联合β1受体反义基因治疗可以明显地降低血压,改善肾功能;且运动训练可以增强基因治疗对β1受体mRNA和蛋白的抑制作用,在转录和翻译水平抑制过度激活的β1受体的表达。  相似文献   
56.
BACKGROUND: We recently implemented the use of an ex-vivo porcine model to teach residents the fundamentals of performing a laparoscopic Nissen fundoplication. METHODS: Residents were trained using intact porcine esophagus, stomach, and spleen placed in a standard video-trainer. They were later asked to complete a survey containing a course evaluation. RESULTS: Sixteen residents (R1-R4) completed the survey. They agreed that (1) the exercise was a valuable use of their limited time, (2) repeating the exercise will be of additional benefit, (3) it will improve their ability to perform or assist in an actual case in the OR, and (4) the surgical principles learned using the model will transfer to other laparoscopic cases. Significant subjective improvements were reported in resident comfort level in assisting in or performing a laparoscopic Nissen fundoplication. CONCLUSIONS: The use of an inexpensive ex-vivo porcine training model increases resident comfort level in performing a Nissen fundoplication in the operating room.  相似文献   
57.
This paper describes a response directed stress management intervention (SMI) in the form of a Jungian based preference awareness education (PAE). It uses the Insights System of personality types to increase awareness of behaviour and communication preferences of self and different others. Eighteen self‐recruited academic employees participated for 7 weeks and received feedback about work preferences and personality type. The aim was to reduce perceptions of stress and interpersonal stress and to increase feelings of job satisfaction and interpersonal satisfaction. The data were analysed using two‐tailed t‐tests. No significant findings were observed for the total sample after training, however, interesting results were found for certain sub‐sample groups. Extravert‐thinking types, reported decreased stress levels (p > 0.018), and participants suffering high stress/interpersonal stress pre‐PAE, reported decreased stress levels (p > 0.010–0.018). Participants suffering low job/interpersonal satisfaction pre‐PAE, reported increased job satisfaction (p > 0.015–0.016). These results suggest that individuals who report high levels of stress and dissatisfaction are most likely to benefit from this type of intervention. Future PAE research might: (a) use pilot studies to meet the intervention preferences of employees that are reluctant to participate in SMIs; (b) include a wait‐list control group; use: (c) a follow up education/measures; (d) and organizational level (stressor directed) SMIs at the same time as response directed initiatives. Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   
58.
59.
Background and objectives: To determine improvement in hand dexterity with targeted laparoscopic skill exercises desirable for use in the operating rooms among in-training laparoscopic gynaecological surgeons and medical students. Design: Cross-sectional study with paired analysis. Setting: Kiel School of Gynaecological Endoscopy and Reproductive Medicine, Germany, between February and April 2005. Subjects: Twenty third-year medical students and 20 in-training gynaecological endoscopic surgeons from various parts of the world. Interventions: Demonstration and explanation of a set of five laparoscopic skill exercises desirable for use in the operating rooms before administering a pretest. This was followed by voluntary practice of these exercises for at least 10 times over 1 day. The posttest was performed the next day once the participant was comfortable performing the skill. Pre- and posttest assessments were conducted by independent supervisors. Main outcome measures: Time to completion of tasks with minimal errors. Results: There was significant reduction in mean time for all the laparoscopic skill exercises performed with dominant, nondominant, and both hands, before and after the training and practice (p-value <0.01; paired t-test). Moderate to high correlation (0.617–0.901) was seen with the intermediate and complex/difficult tasks, whereas low correlation was seen with the simple/easy task (0.200–0.336). Medical students and gynaecologists both showed improvement in performance from pretest to posttest in terms of reduction in mean time taken to perform all the tasks with minimal errors. Conclusions: Simple laparoscopic training devices can substantially help an individual hand’s improvement and acquisition of laparoscopic skills. Simple laparoscopic training devices along with animal models will continue to provide an efficient and effective environment for learning and teaching laparoscopic surgical skills. With this training, performance improves progressively with practice.  相似文献   
60.
舰艇部队军事训练伤分布特点与干预效果研究   总被引:1,自引:0,他引:1  
目的:查明海军舰艇部队特殊军事训练伤的发生率和分布特征,以及施加干预措施后军事训练伤发生率的变化。方法:以整群抽样方式选取海军某舰艇部队官兵1648人,对全年军事训练伤进行前瞻性流行病学调查;以每个参试支队各抽2艘舰艇为干预试验单位,设同期对照组和历史对照组。结果:全年军事训练伤累积发生率为14.62%,时间分布以7月份为高峰;46.53%的伤者为机电部门人员;损伤部位以下肢为主,占32.64%;受伤类型以急性创伤性损伤为主;干预试验的军事训练伤发生率为8.96%,低于同期对照组(12.21%,P<0、05)和历史对照组(14.62%,P<0.01)。结论:舰艇部队军事训练伤发生情况与其它军兵种有较大的区别。施加干预措施可显著降低舰艇部队的军事训练伤。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号