全文获取类型
收费全文 | 5103篇 |
免费 | 285篇 |
国内免费 | 12篇 |
专业分类
耳鼻咽喉 | 31篇 |
儿科学 | 64篇 |
妇产科学 | 82篇 |
基础医学 | 725篇 |
口腔科学 | 166篇 |
临床医学 | 369篇 |
内科学 | 1241篇 |
皮肤病学 | 189篇 |
神经病学 | 344篇 |
特种医学 | 132篇 |
外科学 | 859篇 |
综合类 | 25篇 |
预防医学 | 157篇 |
眼科学 | 138篇 |
药学 | 393篇 |
中国医学 | 14篇 |
肿瘤学 | 471篇 |
出版年
2023年 | 25篇 |
2022年 | 54篇 |
2021年 | 97篇 |
2020年 | 47篇 |
2019年 | 84篇 |
2018年 | 97篇 |
2017年 | 84篇 |
2016年 | 94篇 |
2015年 | 110篇 |
2014年 | 142篇 |
2013年 | 202篇 |
2012年 | 302篇 |
2011年 | 329篇 |
2010年 | 166篇 |
2009年 | 155篇 |
2008年 | 235篇 |
2007年 | 241篇 |
2006年 | 277篇 |
2005年 | 277篇 |
2004年 | 244篇 |
2003年 | 217篇 |
2002年 | 238篇 |
2001年 | 177篇 |
2000年 | 172篇 |
1999年 | 156篇 |
1998年 | 59篇 |
1997年 | 46篇 |
1996年 | 48篇 |
1995年 | 36篇 |
1994年 | 31篇 |
1993年 | 29篇 |
1992年 | 85篇 |
1991年 | 84篇 |
1990年 | 92篇 |
1989年 | 82篇 |
1988年 | 89篇 |
1987年 | 68篇 |
1986年 | 65篇 |
1985年 | 47篇 |
1984年 | 43篇 |
1983年 | 32篇 |
1981年 | 20篇 |
1980年 | 14篇 |
1979年 | 17篇 |
1978年 | 17篇 |
1974年 | 18篇 |
1973年 | 14篇 |
1972年 | 24篇 |
1969年 | 18篇 |
1967年 | 13篇 |
排序方式: 共有5400条查询结果,搜索用时 218 毫秒
1.
2.
Chie Teramoto PHN RN MS Satoko Nagata PhD PHN RN Reiko Okamoto PhD PHN RN Ruriko Suzuki PHN RN MS Emiko Kishi PhD PHN RN Michie Nomura DSN PHN RN Noriko Jojima PHN RN MS Masumi Nishida PhD PHN RN Keiko Koide PhD PHN RN Emiko Kusano PhD PHN RN Saori Iwamoto PhD PHN RN Sachiyo Murashima PhD PHN RN 《Public health nursing (Boston, Mass.)》2015,32(6):654-661
3.
4.
5.
In order to examine the cholecystohepatic circulation of trichloroethylene (TRI) and its metabolites, we injected the gallbladder with TRI and its metabolites, i.e. chloral hydrate (CH), free-trichloroethanol (F-TCE), trichloroacetic acid (TCA) and conjugated-trichloroethanol (Conj-TCE), using anesthetized dogs. The absorption rates of water from the gallbladder were 25-30% 2 h after administration for all substances. The absorption rates of substances were 65-70% in the CH, F-TCE and TRI groups, and 40-50% in the Conj-TCE and TCA groups 2 h after the administration. Conj-TCE in the blood absorbed from the gallbladder has a tendency to be directly transported to the venous system rather than to be taken into hepatocytes in the liver. All of the administered substances, in particular, F-TCE might be metabolized to other substances in the gallbladder. 相似文献
6.
Keijiro Sunada Hironori Yamamoto Hiroto Kita Tomonori Yano Tomohiko Miyata Yutaka Sekine Akiko Kuno Nobuki Onishi Michiko Iwamoto Atsuhiro Sasaki Kenichi Ido Kentaro Sugano 《Digestive endoscopy》2004,16(3):237-240
The requirement for endoscopic access to a stricture is a major limitation of the endoscopic dilatation for the treatment of strictures in the gastrointestinal tract. We have developed the double‐balloon enteroscopy method that enables visualization of the entire small bowel. In addition, double‐balloon enteroscopy has a potential for the interventional therapy including dilatation of strictures. We present here a case of jejunal strictures in a 47‐year‐old woman with Crohn's disease successfully treated with a balloon catheter in combination with double‐balloon enteroscopy. Balloon dilation with double‐balloon enteroscopy is a promising method for the treatment of small bowel strictures in Crohn's disease. 相似文献
7.
FR900403, a new antifungal antibiotic produced by a Kernia sp 总被引:3,自引:0,他引:3
T Iwamoto A Fujie Y Tsurumi K Nitta S Hashimoto M Okuhara 《The Journal of antibiotics》1990,43(9):1183-1185
8.
A Fujie T Iwamoto N Shigematsu M Ezaki M Hino S Hashimoto M Okuhara M Kohsaka H Imanaka 《The Journal of antibiotics》1990,43(5):449-455
FR112123 is a new oligopeptide antibiotic produced by Streptomyces viridochromogenes No. 7587. The structure of FR112123 is elucidated as N-(N6-(N2-glycyl-L-glutaminyl)-D-lysyl)-D-alanine (1) by spectroscopic and chemical evidence. It resembles a partial structure of peptidoglycan in bacteria. The compound has a superior activity against an Escherichia coli mutant sensitive to inhibitors of cell wall synthesis, although it has a weak activity against the parent strain. These suggest that FR112123 might act on the biosynthesis of bacterial cell wall. 相似文献
9.
Takashi Shuto Yutaka Ohtsubo Ken'ichi Sekido Hiroko Iwamoto Isao Yamamoto 《Child's nervous system》1996,12(2):107-109
We report the case of an infant with a cerebellar astrocytoma that showed marked calcification within only 6 months. In general, only slow-growing tumors tend to calcify. To our knowledge, no other case of such rapid calcification in cerebellar astrocytoma has been reported. 相似文献
10.
Hiroomi Murayama Masanobu Meda Ken Miyahara Yoshimasa Sakai Hajime Sakurai Hiroki Hasegawa Akemi Kawamura 《The Japanese Journal of Thoracic and Cardiovascular Surgery》2003,51(3):91-97
Objective: We assessed the current role of preoperative and intraoperative autologous blood donation in pediatric open-heart surgery.
Methods: Group 1 consisted of 51 patients between 5 and 10 years old who underwent preoperative autologous blood donation. Group
2 consisted of 50 age-matched patients without preoperative donation as controls. Intraoperative donation was conducted in
both groups prior to cardiopulmonary bypass. We evaluated perioperative blood cell count, blood loss, and the need for homologous
blood products. Results: No serious complications occurred in preoperative or intraoperative donation. Total preoperative donation storage was 17.5±3.4
mL/kg. Intraoperative donation was 21.7 ±6.1 mL/kg in Group 1 and 12.8±4.0 mL/kg in Group 2 (p<0.001). On admission, serum
hemoglobin was lower in Group 1 (12.2±1.0 g/dL versus 13.6±1.6 g/dL, p<0.001) but returned postoperatively to the preoperative
value. It hovered at a depressed level in Group 2 (12.2±1.4 versus 10.2±1.1 g/dL, p<0.001). The homologous blood requirement
was significantly less in Group 1 than in Group 2 (0% versus 10%, p<0.05). Postoperative platelet counts showed similar curves,
and blood loss was not statistically significantly different between groups. Conclusion: Preoperative and intraoperative donations are safe and continue to contribute uniquely to blood conservation, providing
important options in comprehensive blood conservation programs in current pediatric open-heart surgery. 相似文献