全文获取类型
收费全文 | 8538篇 |
免费 | 444篇 |
国内免费 | 55篇 |
专业分类
耳鼻咽喉 | 99篇 |
儿科学 | 107篇 |
妇产科学 | 104篇 |
基础医学 | 992篇 |
口腔科学 | 159篇 |
临床医学 | 485篇 |
内科学 | 2180篇 |
皮肤病学 | 130篇 |
神经病学 | 631篇 |
特种医学 | 366篇 |
外科学 | 1802篇 |
综合类 | 48篇 |
预防医学 | 197篇 |
眼科学 | 107篇 |
药学 | 673篇 |
中国医学 | 28篇 |
肿瘤学 | 929篇 |
出版年
2023年 | 52篇 |
2022年 | 123篇 |
2021年 | 224篇 |
2020年 | 111篇 |
2019年 | 166篇 |
2018年 | 214篇 |
2017年 | 194篇 |
2016年 | 209篇 |
2015年 | 206篇 |
2014年 | 277篇 |
2013年 | 344篇 |
2012年 | 481篇 |
2011年 | 578篇 |
2010年 | 322篇 |
2009年 | 286篇 |
2008年 | 474篇 |
2007年 | 546篇 |
2006年 | 515篇 |
2005年 | 497篇 |
2004年 | 521篇 |
2003年 | 521篇 |
2002年 | 518篇 |
2001年 | 107篇 |
2000年 | 108篇 |
1999年 | 128篇 |
1998年 | 108篇 |
1997年 | 101篇 |
1996年 | 86篇 |
1995年 | 68篇 |
1994年 | 75篇 |
1993年 | 61篇 |
1992年 | 78篇 |
1991年 | 68篇 |
1990年 | 56篇 |
1989年 | 72篇 |
1988年 | 65篇 |
1987年 | 81篇 |
1986年 | 58篇 |
1985年 | 51篇 |
1984年 | 42篇 |
1983年 | 26篇 |
1982年 | 17篇 |
1981年 | 12篇 |
1980年 | 18篇 |
1979年 | 24篇 |
1978年 | 23篇 |
1977年 | 15篇 |
1976年 | 15篇 |
1975年 | 11篇 |
1974年 | 18篇 |
排序方式: 共有9037条查询结果,搜索用时 31 毫秒
1.
2.
Masaru Sasaki Tsuyoshi Takahashi Soichiro Funaki Koji Tanaka Yasuhiro Miyazaki Naoko Ose Tomoki Makino Yukinori Kurokawa Makoto Yamasaki Kiyokazu Nakajima Yasushi Shintani Masaki Mori Yuichiro Doki 《Asian journal of endoscopic surgery》2021,14(1):116-119
We report a case of a diaphragmatic hernia after a heart transplant operation. A 43-year-old woman, who underwent orthotropic heart transplantation for hypertrophic cadiomyopathy two year earlier, presented with vomiting and epigastric pain. A computed tomography scan showed that the stomach and transverse colon were dislocated in the left thoracic cavity. We diagnosed left diaphragmatic hernia incarceration and performed laparoscopic repair of the diaphragmatic hernia. A 12 × 8 cm diaphragmatic defect was found intraoperatively on the ventrolateral aspect of the left diaphragm, and the stomach with volvulus had herniated into the thorax through the defect. The hernia was considered to be iatrogenic. The diaphragmatic defect was large, and the diaphragm was thinning. We closed the defect by mesh repair. Laparoscopic mesh repair of the diaphragmatic hernia could be performed safely and with minimal invasiveness. 相似文献
3.
4.
Hiroto Kinoshita Hitomi Nishioka Aya Ikeda Kyoko Ikoma Yoichi Sameshima Hidehisa Ohi Mizuki Tatsuno Junka Kouyama Chiaki Kawamoto Tomohiro Mitsui Yuko Tamura Yu Hashimoto Masashi Nishio Tsuyoshi Ogashiwa Yusuke Saigusa Shin Maeda Hideaki Kimura Reiko Kunisaki Kazuhiko Koike 《Journal of gastroenterology and hepatology》2019,34(11):1929-1939
5.
6.
Ichiro Yasuda Takuji Iwashita Takaya Ohnishi Tsuyoshi Mukai Masamichi Enya Eiichi Tomita Hisataka Moriwaki 《Digestive endoscopy》2006,18(Z1):S92-S95
Endoscopic nasobiliary drainage (ENBD) is a well established mode of biliary decompression. Although ENBD is certainly an uncomfortable procedure with the potential risk of spontaneous dislocation or removal of the drainage catheter by disoriented patients, it has several advantages over endoscopic biliary drainage (EBD) using an indwelling stent. The current indications for ENBD are: (i) temporary drainage to treat obstructive jaundice and cholangitis caused by malignant or benign biliary stricture; (ii) urgent drainage to treat suppurative cholangitis primarily caused by common bile duct stones; (iii) temporary drainage after stone removal in patients with suspected incomplete clearance and/or with cholangitis; and (iv) biliary leaks that occur primarily after surgery, as well as other indications. Different types of nasobiliary catheters are currently available that have been designed with various diameters, shapes, and materials. However, the current catheters are not considered by most endoscopists to be sufficient. Further improvements are needed to achieve better drainage and better maneuverability. 相似文献
7.
8.
Kentaroh Miyoshi Minoru Naito Tsuyoshi Ueno Shinji Hato Hideo Ino 《General thoracic and cardiovascular surgery》2009,57(11):629-632
A benign esophageal leiomyoma with abnormally increased fluorine-18-fluorodeoxyglucose uptake on positron emission tomography
(PET) was resected thoracoscopically. The tumor, of which the maximum standardized uptake value of the lesion was 4.7, was
well defined and 38 mm in diameter. Neither mitotic activity nor degeneration was found histologically; and immunoreactivity
for CD34, CD117, MIB-1, and glucose transporter-1 was negative immunohistochemically. A diagnosis of gastrointestinal stromal
tumor was ruled out by an oncogenic kinase gene mutation study. This case cautions against PET-dependent evaluation for malignant
potential of esophageal submucosal tumors. 相似文献
9.
D Akagi H Arita T Komiyama S Ishii K Shigematsu H Nagawa T Miyata 《European journal of vascular and endovascular surgery》2007,33(5):625-630
AIM: The complication of nerve injury after greater saphenous vein stripping for varicosity is subjective, and a method for objective evaluation has never been established. The aim of this study was to evaluate postoperative sensory changes by quantitative assessment of current perception threshold (CPT), and to clarify the relation between CPT and symptoms. PATIENTS AND METHODS: Between January 2003 and August 2005, 27 limbs in 18 patients were enrolled. Quantitative sensory function was determined through CPT using a Neurometer (Neurotron, Inc., USA), with which saphenous nerve neural fiber selective minimum sensing values against three electrical stimuli (2000, 250, 5 Hz) were measured. CPT measurements were scheduled on the day before the operation, and 2-7 days, 1, 3, and 6 months after the operation. RESULTS: An increase in CPT value of more than 20% or decrease to below 50% compared to the preoperative value with at least two stimuli was defined as CPT abnormality. Subjective symptoms were observed in 13 limbs in the early postoperative period, and 10 limbs showed CPT abnormality. In 6 limbs with a CPT increase over 20% with all three stimuli, neurological symptoms continued for 6 months. CONCLUSIONS: CPT evaluation provides an objective indication of neurological symptoms in the lower limb following varicose vein surgery. 相似文献
10.
Pathogenic role of connective tissue growth factor (CTGF/CCN2) in osteolytic metastasis of breast cancer. 总被引:5,自引:0,他引:5