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   31623篇
  免费   6310篇
  国内免费   71篇
耳鼻咽喉   642篇
儿科学   1117篇
妇产科学   1128篇
基础医学   2291篇
口腔科学   1349篇
临床医学   5597篇
内科学   8480篇
皮肤病学   635篇
神经病学   2458篇
特种医学   522篇
外科学   2807篇
综合类   176篇
现状与发展   3篇
一般理论   37篇
预防医学   5577篇
眼科学   441篇
药学   1050篇
中国医学   11篇
肿瘤学   3683篇
  2024年   166篇
  2023年   1182篇
  2022年   546篇
  2021年   998篇
  2020年   1434篇
  2019年   779篇
  2018年   1476篇
  2017年   1511篇
  2016年   1708篇
  2015年   1724篇
  2014年   2444篇
  2013年   2916篇
  2012年   1764篇
  2011年   1722篇
  2010年   1674篇
  2009年   2032篇
  2008年   1582篇
  2007年   1356篇
  2006年   1679篇
  2005年   1298篇
  2004年   1145篇
  2003年   1009篇
  2002年   975篇
  2001年   378篇
  2000年   303篇
  1999年   354篇
  1998年   510篇
  1997年   397篇
  1996年   341篇
  1995年   312篇
  1994年   252篇
  1993年   186篇
  1992年   194篇
  1991年   155篇
  1990年   163篇
  1989年   130篇
  1988年   105篇
  1987年   78篇
  1986年   111篇
  1985年   96篇
  1984年   94篇
  1983年   106篇
  1982年   97篇
  1981年   66篇
  1980年   67篇
  1979年   43篇
  1978年   46篇
  1977年   41篇
  1976年   33篇
  1974年   34篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
3.
4.
ABSTRACT

Abortion is legal in South Africa, but negative abortion attitudes remain common and are poorly understood. We used nationally representative South African Social Attitudes Survey data to analyze abortion attitudes in the case of fetal anomaly and in the case of poverty from 2007 to 2016 (n = 20,711; ages = 16+). We measured correlations between abortion attitudes and these important predictors: religiosity, attitudes about premarital sex, attitudes about preferential hiring and promotion of women, and attitudes toward family gender roles. Abortion acceptability for poverty increased over time (b = 0.05, p < .001), but not for fetal anomaly (b = ?0.008, p = .284). Highly religious South Africans reported lower abortion acceptability in both cases (Odds Ratio (OR)anomaly = 0.85, p = .015; ORpoverty = 0.84, p = .02). Premarital sex acceptability strongly and positively predicted abortion acceptability (ORanomaly = 2.63, p < .001; ORpoverty = 2.46, p < .001). Attitudes about preferential hiring and promotion of women were not associated with abortion attitudes, but favorable attitudes about working mothers were positively associated with abortion acceptability for fetal anomaly ((ORanomaly = 1.09, p = .01; ORpoverty = 1.02, p = .641)). Results suggest negative abortion attitudes remain common in South Africa and are closely tied to religiosity, traditional ideologies about sexuality, and gender role expectations about motherhood.  相似文献   
5.

Introduction The focus in clinical pharmacy practice is and has for the last 30–35 years been on changing the role of pharmacy staff into service orientation and patient counselling. One way of doing this is by involving staff in change process and as a researcher to take part in the change process by establishing partnerships with staff. On the background of the authors’ widespread action research (AR)-based experiences, recommendations and comments for how to conduct an AR-study is described, and one of their AR-based studies illustrate the methodology and the research methods used. Methodology AR is defined as an approach to research which is based on a problem-solving relationship between researchers and clients, which aims at both solving a problem and at collaboratively generating new knowledge. Research questions relevant in AR-studies are: what was the working process in this change oriented study? What learning and/or changes took place? What challenges/pitfalls had to be overcome? What were the influence/consequences for the involved parts? When to use If you want to implement new services and want to involve staff and others in the process, an AR methodology is very suitable. The basic advantages of doing AR-based studies are grounded in their participatory and democratic basis and their starting point in problems experienced in practice. Limitations Some of the limitations in AR-studies are that neither of the participants in a project steering group are the only ones to decide. Furthermore, the collective process makes the decision-making procedures relatively complex.

  相似文献   
6.
7.
Researchers interested in measuring neighborhood‐level effects should understand how “neighborhood” is defined within nursing sciences and other sciences, and the inherent strengths and weaknesses of current research methodologies. This concept analysis provides clarity around the concept of neighborhood within the context of health, analyzes the current state of development of the neighborhood concept, and proposes areas for future nursing research. Using the Rodger's Method of analysis, the concept of neighborhood within nursing and public health research is described based on existing literature. The concept's attributes, related concepts, antecedents, and consequences are given from the literature. Comparisons of the use of neighborhood are made between nursing, public health, sociology, and other sciences. The evolution of the concept of neighborhood throughout history is described, and important implications for future research are discussed.  相似文献   
8.
9.
10.
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