全文获取类型
收费全文 | 2379篇 |
免费 | 224篇 |
国内免费 | 5篇 |
专业分类
耳鼻咽喉 | 17篇 |
儿科学 | 87篇 |
妇产科学 | 108篇 |
基础医学 | 290篇 |
口腔科学 | 47篇 |
临床医学 | 249篇 |
内科学 | 393篇 |
皮肤病学 | 26篇 |
神经病学 | 158篇 |
特种医学 | 146篇 |
外科学 | 273篇 |
综合类 | 98篇 |
预防医学 | 317篇 |
眼科学 | 26篇 |
药学 | 171篇 |
中国医学 | 1篇 |
肿瘤学 | 201篇 |
出版年
2023年 | 14篇 |
2022年 | 23篇 |
2021年 | 36篇 |
2020年 | 23篇 |
2019年 | 48篇 |
2018年 | 57篇 |
2017年 | 44篇 |
2016年 | 40篇 |
2015年 | 53篇 |
2014年 | 50篇 |
2013年 | 93篇 |
2012年 | 123篇 |
2011年 | 120篇 |
2010年 | 72篇 |
2009年 | 64篇 |
2008年 | 89篇 |
2007年 | 114篇 |
2006年 | 107篇 |
2005年 | 96篇 |
2004年 | 77篇 |
2003年 | 76篇 |
2002年 | 98篇 |
2001年 | 82篇 |
2000年 | 59篇 |
1999年 | 68篇 |
1998年 | 54篇 |
1997年 | 38篇 |
1996年 | 34篇 |
1995年 | 24篇 |
1994年 | 24篇 |
1993年 | 26篇 |
1992年 | 52篇 |
1991年 | 39篇 |
1990年 | 44篇 |
1989年 | 47篇 |
1988年 | 49篇 |
1987年 | 48篇 |
1986年 | 39篇 |
1985年 | 37篇 |
1984年 | 25篇 |
1983年 | 23篇 |
1981年 | 14篇 |
1979年 | 19篇 |
1978年 | 20篇 |
1975年 | 23篇 |
1974年 | 19篇 |
1972年 | 17篇 |
1970年 | 24篇 |
1969年 | 17篇 |
1968年 | 16篇 |
排序方式: 共有2608条查询结果,搜索用时 15 毫秒
51.
Differentiation of abdominal masses detected on prenatal ultrasound is difficult and requires careful characterization of the mass and precise localization. Differentiation is required in order to distinguish benign from potentially malignant conditions. We describe a case of fetus‐in‐fetu with pre and postnatal imaging. 相似文献
52.
53.
This pilot study tested the feasibility and effectiveness of a social support intervention with women (n = 24) while they were in a domestic violence shelter. Health outcomes were examined pre and postintervention using a randomized control design. The intervention group had greater improvement (p = .013) in psychological distress symptoms and greater improvement in perceived availability of social support (p = .016) than the control group. The intervention group showed less health care utilization (p = .032) than the control group. Social support interventions for women in shelters are effective in improving health outcomes. Further research should be aimed at testing the effectiveness of different types of interventions on health and abuse outcomes in women who experience interpersonal violence. 相似文献
54.
55.
56.
57.
58.
Cory A. Crane Robert C. Schlauch Samuel W. Hawes Dolores L. Mandel Caroline J. Easton 《Journal of substance abuse treatment》2014
Intimate partner violence (IPV) is a pervasive social concern that may be exacerbated by high rates of alcohol dependence among perpetrators. Society has attempted to combat IPV through various legal interventions, but the effects of specific legal factors on behavioral change and treatment compliance remain largely unexamined. The primary focus of the current study was to comprehensively evaluate the impact of various legal factors (i.e., judicial mandate, judicial monitoring, stage of change, and stake in conformity) on mandatory treatment compliance and behavioral change over a 12 week post-adjudication period among a high-risk sample of alcohol dependent IPV offenders (N = 60). Growth curve analyses revealed effects of judicial monitoring and stage of change such that participants reporting low perceived judicial monitoring and early stages of change reported higher initial levels and a more rapid reduction in IPV than those reporting high perceived judicial monitoring and late stages of change, who reported consistently low IPV. Although we found that legal factors were poor predictors of treatment compliance and alcohol use during treatment, the association between alcohol and IPV was moderated by the legal factors. Stake in conformity was negatively associated with IPV among low alcohol users and positively associated among high alcohol users whereas stage of change was negatively associated with IPV among high alcohol users. The current results suggest that pretreatment legal factors may represent an important consideration in reducing IPV among alcohol dependent offenders. Further research is required to determine the efficacy of legal factors in isolation of treatment as well as methods of manipulating these factors to optimally compliment a prescribed course of treatment. 相似文献
59.
60.
B. Gjelsvik N. Kappelmann T. von Soest V. Hinze R. Baer K. Hawton C. Crane 《Cognitive therapy and research》2018,42(6):782-793
Although suicidal ideation is one of the most consistent symptoms across recurrent episodes of depression, the mechanisms underpinning its maintenance are poorly understood. In order to develop effective treatments for suicidally depressed patients, understanding what maintains suicidal distress is critical. We hypothesised that Thought–Action Fusion (TAF), i.e., to assume that having a thought has real world consequences, originally described in Obsessive–Compulsive Disorder, might be a bias in recurrently suicidally depressed people. To assess this, we revised the original TAF scale, and assessed TAF in three samples: healthy controls, recurrently depressed individuals with no history of suicidality (D-NS) and individuals with a history of recurrent suicidal depression (D-S). Exploratory and confirmatory factor analyses indicated a three-factor solution of TAF: (1) TAF for uncontrollable events, (2) self-suicidal TAF for suicidal acts related to oneself, and (3) TAF for positive controllable events. Compared to healthy controls, the D-NS group reported significantly higher total TAF, TAF uncontrollable, and TAF self-suicidal subscales, whilst positive controllable TAF was lower compared to healthy controls. Both D-S and D-NS samples reported higher TAF for suicidal thought compared to healthy controls, i.e., believing that having suicidal thoughts means they will act on them, however in the context of low mood this became more pronounced for the D-S group. These findings suggest that targeting TAF both in suicidal and non-suicidal depression has merit. 相似文献