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   226425篇
  免费   37595篇
  国内免费   1600篇
耳鼻咽喉   3909篇
儿科学   5812篇
妇产科学   4649篇
基础医学   19313篇
口腔科学   7742篇
临床医学   38237篇
内科学   50790篇
皮肤病学   4926篇
神经病学   23320篇
特种医学   8680篇
外科学   38425篇
综合类   2025篇
现状与发展   40篇
一般理论   173篇
预防医学   24969篇
眼科学   4930篇
药学   10470篇
  2篇
中国医学   184篇
肿瘤学   17024篇
  2024年   778篇
  2023年   5513篇
  2022年   2053篇
  2021年   5077篇
  2020年   6547篇
  2019年   4213篇
  2018年   9484篇
  2017年   9158篇
  2016年   9774篇
  2015年   10348篇
  2014年   13961篇
  2013年   17541篇
  2012年   12117篇
  2011年   12463篇
  2010年   11635篇
  2009年   13374篇
  2008年   11421篇
  2007年   11004篇
  2006年   11739篇
  2005年   10492篇
  2004年   9584篇
  2003年   8786篇
  2002年   8533篇
  2001年   3037篇
  2000年   2156篇
  1999年   2999篇
  1998年   3584篇
  1997年   3104篇
  1996年   3092篇
  1995年   2811篇
  1994年   2059篇
  1993年   1869篇
  1992年   1551篇
  1991年   1468篇
  1990年   1249篇
  1989年   1233篇
  1988年   1227篇
  1987年   1103篇
  1986年   1101篇
  1985年   1128篇
  1984年   1156篇
  1983年   1156篇
  1982年   1349篇
  1981年   1345篇
  1980年   1086篇
  1979年   696篇
  1978年   782篇
  1977年   712篇
  1976年   603篇
  1974年   538篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
1.
2.
3.
4.
5.
6.
7.
8.
Abstract: Background: Fetal pulse oximetry improves the assessment of fetal well‐being during labor. The objective of this study was to evaluate women's satisfaction with their experience with this additional technology. Methods: We surveyed women participating in the FOREMOST trial, a randomized controlled trial comparing the addition of fetal pulse oximetry (FPO) to conventional cardiotocograph (CTG) monitoring (intervention group), versus CTG‐only (control group), in the presence of nonreassuring fetal status during labor. Our survey evaluated 3 aspects of women's experience: labor, fetal monitoring, and participation in the research. The survey was administered within a few days of giving birth and repeated 3 months later. Results: No differences were found between the intervention and control groups for women's evaluations of their labor, fetal monitoring, research, or overall experiences when surveyed on both occasions. Within each study group, a small but statistically significant decline occurred in women's scores for their experience of labor and overall experience from the initial survey close to the time of giving birth, to 3 months later. The magnitude of differences in responses over time was similar for the both groups. Women were more satisfied after a spontaneous or assisted vaginal birth than after cesarean section. Length of time the research midwife was present had a significant positive effect on women's ratings of their experience several days after giving birth (p = 0.006), but no effect at 3 months. Conclusions: The addition of fetal pulse oximetry for the assessment of fetal well‐being during labor did not affect childbearing women's perceptions of fetal monitoring or their labor. Women evaluated their experience in the research process positively overall. Small changes occurred in women's perception of their satisfaction over time. (BIRTH 33:2 June 2006)  相似文献   
9.
10.
CONTEXT: Although the nonmedical use of stimulant drugs such as cocaine and methamphetamine is increasingly common in many rural areas of the United States, little is known about the health beliefs of people who use these drugs. PURPOSE: This research describes illicit stimulant drug users' views on health and health-related concepts that may affect their utilization of health care services. METHODS: A respondent-driven sampling plan was used to recruit 249 not-in-treatment, nonmedical stimulant drug users who were residing in 3 rural counties in west central Ohio. A structured questionnaire administered by trained interviewers was used to collect information on a range of topics, including current drug use, self-reported health status, perceived need for substance abuse treatment, and beliefs about health and health services. FINDINGS: Participants reported using a wide variety of drugs nonmedically, some by injection. Alcohol and marijuana were the most commonly used drugs in the 30 days prior to the interview. Powder cocaine was used by 72.3% of the sample, crack by 68.3%, and methamphetamine by 29.7%. Fair or poor health status was reported by 41.3% of the participants. Only 20.9% of the sample felt they needed drug abuse treatment. Less than one third of the sample reported that they would feel comfortable talking to a physician about their drug use, and 65.1% said they preferred taking care of their problems without getting professional help. CONCLUSIONS: Stimulant drug users in rural Ohio are involved with a range of substances and hold health beliefs that may impede health services utilization.  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