全文获取类型
收费全文 | 1713篇 |
免费 | 291篇 |
国内免费 | 39篇 |
专业分类
耳鼻咽喉 | 13篇 |
儿科学 | 102篇 |
妇产科学 | 19篇 |
基础医学 | 95篇 |
口腔科学 | 26篇 |
临床医学 | 284篇 |
内科学 | 581篇 |
皮肤病学 | 60篇 |
神经病学 | 171篇 |
特种医学 | 279篇 |
外科学 | 194篇 |
综合类 | 32篇 |
预防医学 | 55篇 |
眼科学 | 16篇 |
药学 | 60篇 |
中国医学 | 2篇 |
肿瘤学 | 54篇 |
出版年
2024年 | 9篇 |
2023年 | 52篇 |
2022年 | 13篇 |
2021年 | 28篇 |
2020年 | 90篇 |
2019年 | 12篇 |
2018年 | 89篇 |
2017年 | 69篇 |
2016年 | 69篇 |
2015年 | 60篇 |
2014年 | 95篇 |
2013年 | 110篇 |
2012年 | 45篇 |
2011年 | 37篇 |
2010年 | 77篇 |
2009年 | 109篇 |
2008年 | 43篇 |
2007年 | 44篇 |
2006年 | 42篇 |
2005年 | 25篇 |
2004年 | 13篇 |
2003年 | 10篇 |
2002年 | 15篇 |
2001年 | 29篇 |
2000年 | 12篇 |
1999年 | 24篇 |
1998年 | 81篇 |
1997年 | 95篇 |
1996年 | 78篇 |
1995年 | 68篇 |
1994年 | 50篇 |
1993年 | 52篇 |
1992年 | 27篇 |
1991年 | 14篇 |
1990年 | 26篇 |
1989年 | 52篇 |
1988年 | 42篇 |
1987年 | 26篇 |
1986年 | 20篇 |
1985年 | 20篇 |
1984年 | 16篇 |
1983年 | 9篇 |
1982年 | 14篇 |
1981年 | 14篇 |
1980年 | 15篇 |
1979年 | 9篇 |
1978年 | 9篇 |
1977年 | 10篇 |
1976年 | 10篇 |
1971年 | 9篇 |
排序方式: 共有2043条查询结果,搜索用时 15 毫秒
91.
92.
93.
Imaging of sinonasal inflammatory disease 总被引:10,自引:0,他引:10
94.
95.
96.
97.
Passage of intravenously administered tubocurarine into the liquor space in man and dog 总被引:2,自引:2,他引:0 下载免费PDF全文
G. Devasankaraiah P. S. R. K. Haranath A. Krishnamurty 《British journal of pharmacology》1973,47(4):787-798
1. In anaesthetized patients under controlled respiration, samples of lumbar cerebrospinal fluid were withdrawn 15 and 60 min after an intravenous injection of 30 mg tubocurarine. When tested on the frog rectus muscle preparation contracted by acetylcholine, they exerted curare-like activity which corresponded to between 0.05 and 0.33 mug/ml tubocurarine.2. In dogs anaesthetized with pentobarbitone sodium and artificially ventilated, two procedures were adopted to find out if tubocurarine passes into the liquor space after an intravenous injection of 0.3 or 3 mg/kg and during its intravenous infusion at a rate of 10 (mug/kg)/minute. Either samples of cisternal cerebrospinal fluid (c.s.f.) were collected, or different regions of the liquor space were perfused with artificial c.s.f. and the effluent was collected. The samples of c.s.f. and the effluent were assayed for curare-like activity on the frog rectus muscle.3. After the intravenous injection of tubocurarine samples of cisternal effluent collected during perfusion from lateral ventricle to cisterna exerted curare-like activity. It corresponded to 20 ng/min tubocurarine in the sample collected during the first 15 min after the injection of 0.3 mg/kg and to 40-60 ng/min in the samples collected up to 2 h after the injection of 3 mg/kg.4. During intravenous infusion of tubocurarine the cisternal c.s.f. as well as the effluent from the perfused regions of the liquor space exhibited curare-like activity. Expressed in equivalents of tubocurarine, the activity in the cisternal c.s.f. ranged from between 0.1 and 0.75 mug/ml. On perfusion from lateral ventricle to aqueduct or cisterna, the activity ranged from between 3 and 25 ng/min in the aqueductal and from between 4 and 40 ng/min in the cisternal effluent. On perfusion from the lumbar-spinal subarachnoid space to cisterna it ranged from between 6 and 55 ng/min in the cisternal effluent. 相似文献
98.
99.
O'Brien MF Connolly SS Kelly DG O'Brien A Quinlan DM Mulvin DW 《Irish journal of medical science》2004,173(1):23-26
Background Patients with prostate cancer with a pre-operative prostate-specific antigen (PSA) τ;15ng/ml who undergo radical retropubic
prostatectomy (RRP) generally do not have a good outcome, yet may have organ-confined cancer and should be offered the option
of surgery.
Aim To assess the outcome of patients who underwent RRP with a pre-operative PSA ≥ 15ng/ml.
Methods Thirty-four patients, mean pre-operative PSA: 25.46ng/ml (15.03–76.6) and mean Gleason score: 6.4 (5–9) were assessed.
Results Two groups were identified. Group I: 41% (14/34) have no biochemical recurrence to mean follow up of 58 months (30–106).
Mean PSA: 18.8ng/ml (15.03–25.84). Mean Gleason score: 6.1 (5–7). Clinical stage: T1c in 80%. No patient had seminal vesicle
or lymph node involvement. Group II: 59% (20/34) have biochemical recurrence or died (3) from their disease to mean follow
up of 66 months (36–98). Mean PSA: 28.9ng/ml (15.28–76.6). Mean Gleason score: 6.7 (5–9). Clinical stage: T1c in 25%. Eleven
patients had seminal vesicle (8) involvement or positive lymph nodes (3) or both (2).
Conclusion RRP seems feasible in patients whose pre-operative PSA is between 15 and 25ng/ml with stage T1c, Gleason score ≤ 7 and negative
lymph node frozen section. 相似文献
100.
This article presents a brief review of the effects of inhaled corticosteroids on growth in children with asthma. All currently
available inhaled corticosteroids, where there is adequate data, have been shown to cause significant growth suppression in
children in a dose-dependent manner. It is now apparent that there are differences in the growthsuppressive effects of different
corticosteroids. Recent evidence confirms that the growth-suppressive effects are short lived and that, at conventional doses,
inhaled corticosteroids do not affect final attained adult height. 相似文献