全文获取类型
收费全文 | 14963篇 |
免费 | 963篇 |
国内免费 | 50篇 |
专业分类
耳鼻咽喉 | 81篇 |
儿科学 | 422篇 |
妇产科学 | 433篇 |
基础医学 | 1762篇 |
口腔科学 | 178篇 |
临床医学 | 2298篇 |
内科学 | 3067篇 |
皮肤病学 | 179篇 |
神经病学 | 1462篇 |
特种医学 | 251篇 |
外科学 | 1319篇 |
综合类 | 389篇 |
一般理论 | 18篇 |
预防医学 | 2072篇 |
眼科学 | 268篇 |
药学 | 707篇 |
中国医学 | 23篇 |
肿瘤学 | 1047篇 |
出版年
2023年 | 78篇 |
2022年 | 95篇 |
2021年 | 265篇 |
2020年 | 154篇 |
2019年 | 243篇 |
2018年 | 290篇 |
2017年 | 222篇 |
2016年 | 234篇 |
2015年 | 298篇 |
2014年 | 443篇 |
2013年 | 716篇 |
2012年 | 999篇 |
2011年 | 1146篇 |
2010年 | 599篇 |
2009年 | 529篇 |
2008年 | 1014篇 |
2007年 | 1066篇 |
2006年 | 1019篇 |
2005年 | 1014篇 |
2004年 | 988篇 |
2003年 | 909篇 |
2002年 | 850篇 |
2001年 | 134篇 |
2000年 | 123篇 |
1999年 | 159篇 |
1998年 | 216篇 |
1997年 | 155篇 |
1996年 | 135篇 |
1995年 | 124篇 |
1994年 | 108篇 |
1993年 | 96篇 |
1992年 | 87篇 |
1991年 | 70篇 |
1990年 | 75篇 |
1989年 | 76篇 |
1988年 | 68篇 |
1987年 | 54篇 |
1986年 | 66篇 |
1985年 | 59篇 |
1984年 | 72篇 |
1983年 | 85篇 |
1982年 | 79篇 |
1981年 | 80篇 |
1980年 | 66篇 |
1979年 | 56篇 |
1978年 | 57篇 |
1977年 | 50篇 |
1976年 | 42篇 |
1974年 | 36篇 |
1972年 | 34篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Data on 232 members of a single pedigree, descended from two pairs of original parents, were made available to the participants of Genetic Analysis Workshop 8 (GAW8). In addition to information concerning age and sex, measurements for 10 quantitative traits and genotypes at 22 polymorphic marker loci were also provided for a subset of 193 of these family members. © 1993 Wiley-Liss, Inc. 相似文献
2.
3.
Joan Junkin Janice M Beitz 《Journal of wound, ostomy, and continence nursing》2005,32(2):121-8; quiz 129-30
Pelvic surgery for bladder, colon, prostate, and gynecologic cancers or disease amelioration can affect sexual health and functioning for the long-term or short-term. A person with a permanent diversion is likely to experience longer term adjustment challenges and may suffer from serious sexual dysfunction. Wound, ostomy, and continence nurses caring for the whole person must consider this in their overall care plan. Being prepared with specific information and practical interventions can assist in this endeavor. This article targets sexuality issues for a person with an ostomy and provides suggestions for comprehensive nursing interventions. 相似文献
4.
M Joan Taylor Sangeeta Tanna Tarsem S Sahota Barbara Voermans 《European journal of pharmaceutics and biopharmaceutics》2006,62(1):94-100
The rheological characterisation of glucose sensitive mixtures containing dextran and concanavalin A (con A) with and without glucose, was undertaken using oscillatory rheometry at 20 and 37 degrees C so that comparative data could be gathered in the linear viscoelastic (LVE) range. Measurements for a series of mixtures showed that complex viscosity is a function not only of the con A concentration but of the content and molecular weight of the dextran used. The extent of liquefaction on addition of glucose also depended on these factors. The tan delta profiles confirmed the change from semi-solid towards fluid behaviour. This occurs when glucose effects dismantling of the three-dimensional structure of the dextran-con A system by competitive binding to the glucose receptors in the protein. For the mixtures studied, the changes occurred between contents of 0 and 1% (w/w) glucose at 20 and 37 degrees C and form a useful basis for the formulation of a self-regulating delivery device for the control of hyper-and hypoglycaemia in diabetes. 相似文献
5.
Alberto Castilla M.D. Joan Camps-Bansell M.D. Maria-Pilar Civeira M.D. Jesús Prieto M.D. 《The American journal of gastroenterology》1993,88(2):233-239
Forty patients with chronic hepatitis C (CHC) were included in an open randomized controlled trial of lymphoblastoid α-interferon (L-IFN) versus no treatment. Twenty patients entered each group, and features of therapy and control cases were similar. L-IFN was given in low doses (1.5-4.5 megaunits) for 1 yr. In 16 of 20 patients treated with L-IFN (80%), but in only one of 20 nontreated cases (0.5%; p < 0.001), aminotransferase activities became normal. In four patients there was a reactivation of the disease during treatment after 4, 5, 6, and 8 months with normal aminotransferase levels. A posttherapy reactivation of hepatitis was observed in four additional cases after 1, 1, 1, and 3 months of follow-up. The other eight patients (40%) continued with normal aminotransferase levels for 1.52 ± 0.74 (range, 1-2.1) yr after IFN doses were discontinued. In all treated patients except two nonresponders, but in only one of 20 nontreated cases ( p < 0.001), Knodell's histological activity index decreased. Procollagen type III aminoterminal peptide levels did not change significantly in nontreated and nonresponder patients, diminished slightly in patients with a transient response, and normalized in cases with a long-standing response, suggesting that this serum test may be a reliable marker for monitoring response to IFIN therapy in patients with CHC. Finally, L-IFN treatment induced significant increments in CD4/CD8 index, phytohemagglutinin-induced blastogenesis, and natural killer activity. This study shows that L-IFN diminish inflammatory and fibrogenic activity in most patients with CHC. In 40% of patients treated in this trial, a long-standing remission of the disease was observed. 相似文献
6.
7.
Joyce J. Fitzpatrick Sheila Ryan DeWitt Baldwin Roger Bulger Jean Johnson-Pawlson Christopher McLaughlin Maureen Kelley Leopold Selketr Bernardine Lacey Charlene Hanson Robin Harvan Patricia Hinton Walker David Sluyter Mary Joan Ladden Neal Vanselow 《Journal of Midwifery & Women's Health》1998,43(1):61-65
In 1995, the National League for Nursing commissioned a Panel on Interdisciplinary/Transdisciplinary Education. The focus of the Panel's work was to examine educational issues that transcend the health professions and to make recommendations for future implementation of an interdisciplinary approach to addressing them. This article is being simultaneously published by several professional journals. The goal is to seek as much feedback as possible. 相似文献
8.
David C. Mitchell Martin R. Prince Joan K. Frisoli Roy E. Smith Richard F. M. Wood 《Lasers in surgery and medicine》1993,13(2):149-157
The yellow color of atherosclerotic plaque is due to the presence of carotenoids, which absorb light between 430–530 nm and account for the preferential ablation of plaque by the pulsed dye laser operating at 480 nm. This study was designed to examine tissue uptake of β-carotene and the effect of uptake on arterial plaque ablation. Forty-two atherosclerotic NZW rabbits were given intravenous β-carotene at a dose of 40 mg/kg, twice weekly and killed between 1 hour and 28 days after the initial injection. β-carotene was not detected in control specimens but was significantly greater in plaque than in normal wall at all time points following β-carotene injection (P < 0.04 Mann Whitney U test). The ablation threshold was significantly lower in β-carotene treated plaque than in untreated plaque or normal arterial wall (P < 0.01, Fisher's exact test). In this model β-carotene is preferentially taken up into arterial plaque, resulting in increased absorption of laser radiation at 480 nm and enhanced tissue ablation. © 1993 Wiley-Liss, Inc. 相似文献
9.
Joan C. Callahan 《The Hastings Center report》1996,26(2):45-46
Book reviewed in this article: Ethics in Obstetrics and Gynecology . By Laurence B. McCullough and Frank A. Chervenak. 相似文献
10.
List of books reviewed. 总被引:1,自引:1,他引:0
Joan Busfield 《Sociology of health & illness》1988,10(4):521-542
Abstract Feminists have been taken to task for suggesting both that the higher level of mental illness observed in women is a consequence of the oppression they face - an oppression which drives them into madness and mental disorder - and also that the concept of mental illness is a social construct inappropriately and incorrectly applied to women by a patriarchal order as a means of social control. This paper examines this supposed contradiction and the ideas that underly the contrasting contentions. It argues that the two positions are not in fact incompatible. 相似文献