全文获取类型
收费全文 | 15623篇 |
免费 | 848篇 |
国内免费 | 83篇 |
专业分类
耳鼻咽喉 | 187篇 |
儿科学 | 270篇 |
妇产科学 | 190篇 |
基础医学 | 2057篇 |
口腔科学 | 491篇 |
临床医学 | 1035篇 |
内科学 | 4055篇 |
皮肤病学 | 231篇 |
神经病学 | 1037篇 |
特种医学 | 794篇 |
外科学 | 2616篇 |
综合类 | 84篇 |
一般理论 | 1篇 |
预防医学 | 496篇 |
眼科学 | 320篇 |
药学 | 975篇 |
中国医学 | 36篇 |
肿瘤学 | 1679篇 |
出版年
2023年 | 144篇 |
2022年 | 264篇 |
2021年 | 429篇 |
2020年 | 225篇 |
2019年 | 288篇 |
2018年 | 362篇 |
2017年 | 305篇 |
2016年 | 361篇 |
2015年 | 374篇 |
2014年 | 460篇 |
2013年 | 505篇 |
2012年 | 841篇 |
2011年 | 943篇 |
2010年 | 480篇 |
2009年 | 470篇 |
2008年 | 782篇 |
2007年 | 776篇 |
2006年 | 732篇 |
2005年 | 726篇 |
2004年 | 666篇 |
2003年 | 683篇 |
2002年 | 647篇 |
2001年 | 446篇 |
2000年 | 482篇 |
1999年 | 429篇 |
1998年 | 157篇 |
1997年 | 148篇 |
1996年 | 115篇 |
1995年 | 91篇 |
1994年 | 91篇 |
1993年 | 94篇 |
1992年 | 327篇 |
1991年 | 308篇 |
1990年 | 259篇 |
1989年 | 247篇 |
1988年 | 235篇 |
1987年 | 212篇 |
1986年 | 180篇 |
1985年 | 161篇 |
1984年 | 129篇 |
1983年 | 113篇 |
1979年 | 67篇 |
1978年 | 53篇 |
1977年 | 55篇 |
1975年 | 61篇 |
1973年 | 48篇 |
1972年 | 57篇 |
1970年 | 48篇 |
1968年 | 61篇 |
1967年 | 64篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
3.
4.
5.
Masanori Murakami Haruhiko Okada Masahiko Nishida Kimikazu Hamano 《Annals of thoracic and cardiovascular surgery》2006,12(3):216-218
A 14-year-old boy had a needle accidentally inserted through his chest wall. Chest X-ray showed a needle-shaped metallic density localized in the cardiac silhouette. An echocardiography indicated the needle had passed through the interventricular septum, and its eye and point had reached the right and left ventricle, respectively. Surgical removal of the needle was performed. The needle could not be observed from the heart surface, and was recognized in a dent 5 mm on the right side from the left anterior descending branch (LAD). The needle was easily removed under extracorporeal circulation, and he was discharged ten days after the operation. 相似文献
6.
H Murakami M Togawa S Takahashi N Kasahara J Yamamoto N Matsuura Y Koshiyama Y Ino M Oda 《Arzneimittel-Forschung》1990,40(12):1352-1358
The effects of FUT-187 (6-amidino-2-naphthyl 4-[(4,5-dihydro-1H-imidazol-2-yl)amino]benzoate dimethanesulfonate, CAS 103926-82-5), a novel synthetic protease inhibitor, were examined in experimental rat and canine models of pancreatitis. 1. FUT-187 significantly increased the survival of rats with trypsin- and phospholipase A2-induced pancreatitis in a dose-dependent manner (10-100 mg/kg, p.o.). 2. FUT-187 decreased plasma enzymatic activity reflecting the degree of pancreatitis in rats with ethionine-induced pancreatitis, and showed a tendency to ameliorate histopathological changes in the pancreas (10-100 mg/kg p.o.). 3. FUT-187 (10 mg/kg) produced an obvious improvement of various biochemical parameters of pancreatitis and also reduced histopathological changes in the pancreas in animals with experimental pancreatitis produced by the closed duodenal loop method. In addition, FUT-187 significantly increased the survival of dogs when given by direct administration into the lumen of the closed duodenal loop. The therapeutic effects of FUT-187 in experimental pancreatitis were nearly equal in most instances to those of camostat mesilate. Thus, FUT-187 would appear to be an effective new agent for the treatment of pancreatitis. 相似文献
7.
Kentaro Yamasaki Takafumi Ishida Tatsuya Kishino Norio Niikawa 《American journal of medical genetics. Part A》2002,111(3):301-306
We report on a Thai family with dominantly inherited malformation syndrome with upper limb anomalies, short stature, quadricuspid aortic valve, and minor craniofacial anomalies. The affected individuals comprised a mildly affected mother, a moderately affected daughter, and a most severely affected son. The daughter and son had short stature. The craniofacial abnormalities comprised frontal bossing, hypoplastic nasal bones, depressed nasal bridge, and broad nasal alae. The upper limb defects varies among the patients, ranging from radial ray defects in the mother through radial and ulnar ray defects with unilateral humeral hypoplasia in the daughter to radial ray defects with severe oligodactyly and bilateral humeral hypoplasia in the son. All patients in this family had hypoplasia of the shoulder girdle and resembled what is observed in many families with Holt‐Oram syndrome. Moreover, the son showed quadricuspid aortic valve with mild aortic regurgitation. However, the present family did not show any mutation of the TBX5 gene, a disease‐causing gene of Holt‐Oram syndrome. The present family deserves further investigation on other genes that play a role in the development of the upper limbs, particularly of radial rays. © 2002 Wiley‐Liss, Inc. 相似文献
8.
9.
10.
Takayoshi Owada Kentaro Takahashi Yasuhiko Kita 《Modern rheumatology / the Japan Rheumatism Association》2009,19(5):573-580
We report 51- and 43-year-old Japanese female patients with systemic lupus erythematosus (SLE) associated with subarachnoid
hemorrhage (SAH) due to rupture of intracranial saccular aneurysms. We also review the literature of Japanese SLE patients
with SAH. SAH in Japanese SLE patients is more frequent than in patients from Western countries, has different features from
the general population, and can occur regardless of SLE disease activity. Clinicians must pay attention to SAH in all SLE
patients. 相似文献