全文获取类型
收费全文 | 1216篇 |
免费 | 123篇 |
专业分类
耳鼻咽喉 | 4篇 |
儿科学 | 31篇 |
妇产科学 | 17篇 |
基础医学 | 150篇 |
口腔科学 | 23篇 |
临床医学 | 162篇 |
内科学 | 229篇 |
皮肤病学 | 29篇 |
神经病学 | 119篇 |
特种医学 | 52篇 |
外科学 | 236篇 |
综合类 | 28篇 |
预防医学 | 89篇 |
眼科学 | 10篇 |
药学 | 71篇 |
肿瘤学 | 89篇 |
出版年
2021年 | 14篇 |
2020年 | 10篇 |
2019年 | 26篇 |
2018年 | 21篇 |
2017年 | 22篇 |
2016年 | 16篇 |
2015年 | 17篇 |
2014年 | 20篇 |
2013年 | 35篇 |
2012年 | 44篇 |
2011年 | 59篇 |
2010年 | 21篇 |
2009年 | 28篇 |
2008年 | 54篇 |
2007年 | 55篇 |
2006年 | 46篇 |
2005年 | 59篇 |
2004年 | 55篇 |
2003年 | 42篇 |
2002年 | 44篇 |
2001年 | 31篇 |
2000年 | 30篇 |
1999年 | 35篇 |
1998年 | 10篇 |
1997年 | 12篇 |
1995年 | 11篇 |
1994年 | 10篇 |
1992年 | 17篇 |
1991年 | 30篇 |
1990年 | 32篇 |
1989年 | 17篇 |
1988年 | 13篇 |
1987年 | 28篇 |
1986年 | 19篇 |
1985年 | 18篇 |
1984年 | 26篇 |
1983年 | 23篇 |
1982年 | 14篇 |
1981年 | 15篇 |
1980年 | 13篇 |
1979年 | 24篇 |
1978年 | 28篇 |
1977年 | 14篇 |
1976年 | 16篇 |
1975年 | 16篇 |
1973年 | 19篇 |
1972年 | 20篇 |
1971年 | 11篇 |
1970年 | 13篇 |
1966年 | 14篇 |
排序方式: 共有1339条查询结果,搜索用时 225 毫秒
1.
2.
John R. Jarrett M.D. 《Aesthetic plastic surgery》1990,14(1):87-92
Immediate reconstruction of more than 1000 breasts was performed on high-risk patients on whom a prophylactic mastectomy was done. The mastectomy removes as much breast tissue as possible while leaving sufficient skin, and possibly the nipple-areola complex, to enable immediate reconstruction. The creation of symmetrical, well-balanced muscle pockets for the implant is the most important factor in producing satisfactory results in these cases. 相似文献
3.
D J Kupfer B G Pollock J M Perel D B Jarrett A B McEachran J M Miewald 《Psychiatry research》1991,36(3):279-289
An i.v. challenge dose of clomipramine (12.5 mg) was given to eight outpatients with major depression. The procedure facilitated the examination of all-night sleep and sleep-related neuroendocrine changes (cortisol, growth hormone, and prolactin). In comparison to baseline saline nights, the patients experienced a profound suppression of rapid eye movement (REM) sleep throughout the night with no rebound recovery in the second half of the night. Furthermore, REM-suppressing effects were noted on the following no-drug night. In contrast, little effect on delta wave sleep was found, except for increased consolidation of delta waves within stage 3 and 4 sleep. Delta sleep measures were significantly correlated with levels of cortisol and growth hormone. 相似文献
4.
Tim Wagner Jarrett Rushmore Antoni Valero-Cabre 《Cortex; a journal devoted to the study of the nervous system and behavior》2009,45(9):1025-137
Transcranial Magnetic Stimulation (TMS) induces electrical currents in the brain to stimulate neural tissue. This article reviews our present understanding of TMS methodology, focusing on its biophysical foundations. We concentrate on how the laws of electromagnetic induction apply to TMS; addressing issues such as the location, area (i.e., focality), depth, and mechanism of TMS. We also present a review of the present limitations and future potential of the technique. 相似文献
5.
The danger management strategies of low‐income African American women who live in a public housing community characterized by chronic violence are examined. Based on qualitative interviews with 18 single mothers, we explored the violent community dangers with which women contend, the nature of this violence, the strategies used to deal with community violence, and their benefits and costs to family and community life. Findings show that multiple types of violence characterized life in the community and that this violence has specific physical locations, a particular set of actors, and a temporal rhythm. Women's responses to violence were nonconfrontational and family focused in nature. These efforts were effective in keeping women and their children safe, but did not reduce the prevalence of violence. 相似文献
6.
Qualitative Data Analysis: An Introduction 总被引:1,自引:1,他引:0
7.
The Relationship Between Daily Life Stress and Gastrointestinal Symptoms in Women with Irritable Bowel Syndrome 总被引:3,自引:0,他引:3
Rona L. Levy Kevin C. Cain Monica Jarrett Margaret M. Heitkemper 《Journal of behavioral medicine》1997,20(2):177-193
Research on irritable bowel syndrome (IBS), a functional disorder of the gastrointestinal (GI) system, has linked GI symptoms to stress. This study examined the relationship between daily stress and GI symptoms across women and within woman in IBS patients (n = 26), IBS nonpatients (IBS-NP; n = 23), and controls (n = 26), controlling for menstrual cycle phase. Women (ages 20–45) completed daily health diaries for two cycles in which they monitored daily GI symptoms and stress levels. The Life Event Survey (LES) was used as a retrospective measure of self-reported stress. The across-women analyses showed higher mean GI symptoms and stress in the IBS and IBS-NP groups relative to controls but no group differences in LES scores. The within-woman analyses found a significant and positive relationship between daily stress and daily symptoms in both the IBS-NP and the IBS groups. Controlling for menstrual cycle had no substantial impact on the results. 相似文献
8.
9.
10.
Immune-stimulating complexes containing Quil A and protein antigen prime class I MHC-restricted T lymphocytes in vivo and are immunogenic by the oral route 总被引:7,自引:0,他引:7 下载免费PDF全文
Induction of all forms of protective immunity by oral immunization with subunit vaccines is an ideal goal for the development of novel vaccines, but creates several theoretical problems from the point of view of antigen processing mechanisms. We show here that incorporation of the protein antigen ovalbumin (OVA) in lipophilic immune-stimulating complexes (ISCOMS) induces very strong primary immune responses in mice and requires very small amounts of antigen. OVA ISCOMS were particularly efficient at stimulating T-cell-mediated immunity in vivo, including delayed-type hypersensitivity (DTH) and potent class I major histocompatibility complex (MHC)-restricted cytotoxic T-cell responses. Furthermore, unlike native protein, OVA in ISCOMS was immunogenic when given orally. Thus, ISCOMS seem to allow protein to enter both the endogenous and exogenous pathways of antigen processing and overcome the usual induction of tolerance after feeding antigen. ISCOMS could provide potentially useful adjuvants for the development of oral subunit vaccines. 相似文献