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   4613篇
  免费   422篇
  国内免费   80篇
耳鼻咽喉   10篇
儿科学   19篇
妇产科学   13篇
基础医学   264篇
口腔科学   87篇
临床医学   246篇
内科学   847篇
皮肤病学   12篇
神经病学   224篇
特种医学   35篇
外科学   74篇
综合类   342篇
预防医学   1395篇
眼科学   24篇
药学   1160篇
中国医学   146篇
肿瘤学   217篇
  2023年   55篇
  2022年   75篇
  2021年   150篇
  2020年   116篇
  2019年   113篇
  2018年   164篇
  2017年   177篇
  2016年   165篇
  2015年   156篇
  2014年   236篇
  2013年   601篇
  2012年   297篇
  2011年   331篇
  2010年   228篇
  2009年   203篇
  2008年   231篇
  2007年   206篇
  2006年   172篇
  2005年   157篇
  2004年   143篇
  2003年   136篇
  2002年   93篇
  2001年   114篇
  2000年   74篇
  1999年   59篇
  1998年   65篇
  1997年   54篇
  1996年   40篇
  1995年   41篇
  1994年   36篇
  1993年   33篇
  1992年   24篇
  1991年   25篇
  1990年   21篇
  1989年   16篇
  1988年   32篇
  1987年   20篇
  1986年   26篇
  1985年   34篇
  1984年   17篇
  1983年   28篇
  1982年   18篇
  1981年   25篇
  1980年   13篇
  1979年   24篇
  1978年   13篇
  1977年   13篇
  1976年   10篇
  1975年   9篇
  1973年   14篇
排序方式: 共有5115条查询结果,搜索用时 536 毫秒
81.
82.
Abstract

This paper investigates the role of race/ethnicity, language skills (a proxy for acculturation among Hispanics in Arizona, California, New Mexico, and Texas), income, and education level on alcohol-related fatal motor vehicle crashes. Using the Fatality Analysis Reporting System (FARS), we confirmed previous state-based studies showing that high income and education levels have a protective influence on alcohol-related fatal motor vehicle crashes. We also confirmed that language proficiency/acculturation tends to increase the vulnerability of Hispanic women to alcohol-related fatalities. Differences in alcohol-related fatality rates across Hispanic subgroups are observed. Future reductions in alcohol-related traffic fatalities may require prevention policies that take into account existent variations in acculturation, income, and education among racial/ethnic groups and subgroups.  相似文献   
83.
84.
目的分析北京、成都、上海、广州居民的夏季一天不同时间段的饮水行为。方法采用多阶段随机抽样方法从四城市抽取18~60岁成年人1483名,使用连续7天的饮水记录表,由调查对象利用定量用具详细记录每天8个时间段内每次饮水的种类及饮水量。结果调查对象早、中、晚餐后的饮水率(97%~99%)及饮水量(290~471ml)较其他5个时间段高(饮水率:49%~88%;饮水量:54~166ml,F=972.55,P<0.01);白水、茶水、饮料的饮水人数与饮水量的分布情况同总水趋势一致。调查对象上午(719ml/d)的饮水量最高,其次是下午(539ml/d),晚上(417ml/d)的最低(F=265.49,P<0.01)。白水和饮料的饮用量均是上午最高;茶水上午和下午的接近,同时高于晚上(t=-52.13,P<0.01)。非就餐时(1436ml/d)的饮水量高于就餐时(240ml/d)的饮水量。就餐时饮料的饮用量最高;非就餐时白水的饮用量最高(P<0.05)。结论我国四城市居民在上午、下午、晚上均以饮用白水为主;就餐时以饮用饮料为主,非就餐时以白水为主。  相似文献   
85.
The addictions treatment field has come under increased attack for basing much of its intervention on research and theory drawn from white male experiences with addiction (Gornberg & Nirenberg, 1993; Bepko, 1991; Covington, 1991; Forth-Fiegan, 1991). The goal of this project is to review the literature for information regarding women in treatment. The literature review reminds us that women stand in the center of an intricate network consisting of cultural, community, economic and familial connections and expectations. We must acknowledge the importance of these factors and begin to build our treatment programs for women around these concerns rather than continuing to layer these concerns on top of our traditional treatment responses.  相似文献   
86.
Abstract

Alcohol has become an important feature in the lives of many inhabitants of Sub-Saharan Africa and is increasingly associated with excessive consumption and negative personal and social consequences. Uganda is one of the Sub-Saharan countries with the highest rate of alcohol-related burden in the world, but supply and demand reduction strategies such as regulatory measures, prevention and treatment programs are hardly available. Consequently, the aim of this article is to critically review the situation in Uganda as part of a regional trend. First, the origins of alcohol misuse and emerging policy initiatives in Sub-Saharan Africa are discussed. Then, the consequences of alcohol misuse in Uganda are highlighted, as well as policy and treatment responses. Recommendations are formulated for developing more effective and culturally adapted treatment programs and policies.  相似文献   
87.
Aims: In this study, we highlight the identities and actions of women with a problem-drinking relative by analysing autobiographies of women born between the 1920s and the 1950s. We ask how women describe their relationship and the problems arising because of a significant other’s drinking and how they cope with these problems. Methods: In the analysis, we pay attention to the power dynamics between family members. We, first, trace what kind of positions or identities the protagonists take in relation to the drinker. Second, we examine what kinds of harms and emotional reactions significant other’s drinking causes. Third, we consider how writers identify or take distance from events described in the autobiographies. Findings: Our analysis reveals four main identities and coping strategies: the positions of victim, helper, boundary setter and fighter. The victim and helper positions often entail women’s weakness and oppressed role, while the positions of boundary setter and fighter express women’s own power and reflexivity in action. Conclusions: Knowledge of the identities and coping strategies is important for understanding the power aspects of a relationship and developing appropriate support for women suffering from family member’s drinking.  相似文献   
88.
89.
This article reviews current literature examining problematic alcohol use and marital distress and introduces a new alcohol and marriage model within the theoretical framework of interdependence theory. Although marriage is generally associated with decreased heavy drinking and alcohol problems, many couples develop and maintain alcohol use disorders during committed relationships and marriage. When one person is affected by an alcohol use disorder, it both affects and is affected by their close relationships, particularly the relationship with their partner or spouse. While the causal connections between problematic drinking and marital distress are complex and only partially understood, available evidence demonstrates that the two problems often exacerbate each other, forming a detrimental cycle. Research using cross-sectional and longitudinal methods reveals covariation between the two as well as support for both causal directions. New models using the Actor–Partner Interdependence Model (APIM) are presented and structured around the concept that these reverse temporal effects may be operating through different mechanisms and with different moderators. Thus, determinants are presented for each directional effect. Finally, avenues for future research are discussed.  相似文献   
90.
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