首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   19672篇
  免费   1436篇
  国内免费   104篇
耳鼻咽喉   170篇
儿科学   638篇
妇产科学   484篇
基础医学   2859篇
口腔科学   510篇
临床医学   1710篇
内科学   4588篇
皮肤病学   552篇
神经病学   2057篇
特种医学   429篇
外国民族医学   1篇
外科学   2135篇
综合类   70篇
一般理论   7篇
预防医学   1562篇
眼科学   328篇
药学   1417篇
中国医学   49篇
肿瘤学   1646篇
  2024年   27篇
  2023年   229篇
  2022年   553篇
  2021年   978篇
  2020年   498篇
  2019年   754篇
  2018年   832篇
  2017年   522篇
  2016年   602篇
  2015年   709篇
  2014年   886篇
  2013年   1139篇
  2012年   1577篇
  2011年   1549篇
  2010年   939篇
  2009年   745篇
  2008年   1112篇
  2007年   1121篇
  2006年   991篇
  2005年   926篇
  2004年   773篇
  2003年   710篇
  2002年   674篇
  2001年   203篇
  2000年   181篇
  1999年   196篇
  1998年   141篇
  1997年   126篇
  1996年   79篇
  1995年   72篇
  1994年   78篇
  1993年   63篇
  1992年   118篇
  1991年   103篇
  1990年   110篇
  1989年   87篇
  1988年   67篇
  1987年   87篇
  1986年   67篇
  1985年   69篇
  1984年   47篇
  1983年   51篇
  1981年   29篇
  1979年   42篇
  1978年   28篇
  1977年   25篇
  1974年   25篇
  1973年   32篇
  1972年   26篇
  1967年   27篇
排序方式: 共有10000条查询结果,搜索用时 29 毫秒
1.
2.
Breast pseudoaneurysms after a core needle biopsy are a rare complication with a low incidence. However, it is important to be aware of the possibility of complications that require treatment.  相似文献   
3.
4.
5.
Quality of Life Research - The aim of the study was to assess QoL and identify and analyse its determinants in women with endometriosis. The study was performed in 2019 in health centres in Lublin...  相似文献   
6.
This study used the National Survey of Ambulatory Surgery (NSAS) database to measure the incidence of and risk factors for symptoms in the ambulatory surgery center and problems within 24 h after isolated carpal tunnel release (CTR). The NSAS contained records on 400,000 adult patients with carpal tunnel syndrome who were treated with CTR in 2006, based on ICD-9 codes. The type of anesthesia used and factors associated with symptoms and problems were sought in bivariate and multivariable statistical analyses. The mean duration of the procedure was 16 ± 8.8 min. Only 5 % were performed under local anesthesia without sedation, 45 % with IV sedation, 28 % regional anesthesia, and 19 % general anesthesia. Symptoms in the ambulatory surgery center or a problem within 24 h after discharge were recorded in 10 % of patients, all of them minor and transient, including difficulties with pain and its treatment. The strongest risk factors were male sex, age of 45 years and older, and participation of an anesthesiologist. Local anesthesia and regional anesthesia were associated with more perioperative symptoms and postoperative problems. Most CTR are performed with some sedation in the United States. CTR is a safe procedure: one in 10 patients will experience a minor issue in the perioperative or immediate postoperative period.  相似文献   
7.
8.

Objectives

To determine the incidence of incisional hernia (IH) in the extraction incision (EI) in colorectal resection for cancer. To analyze whether the location of the incision has any relationship with the incidence of hernias and whether mesh could be useful for prevention in high-risk patients.

Methods

Retrospective review of the colon and rectal surgery database from January 2015 to December 2016. Data were classified into 2 groups, transverse (TI) and midline incision (MI), and the latter was divided into 2 subgroups (mesh [MIM] and suture [MIS]). Patients were classified using the HERNIAscore. Hernias were diagnosed by clinical and/or CT examination.

Results

A total of 182 out of 210 surgical patients were included. After a median follow-up of 13.0 months, 39 IH (21.9%) were detected, 23 of which (13.4%) were in the EI; their frequency was lower in the TI group (3.4%) and in the MIM group (5.9%) than in the MIS group (29.5%; p = 0.007). The probability of developing IH in the MIS group showed an OR = 11.7 (95%CI: 3.3-42.0) compared to the TI group and 4.3 (IC 95%: 1.1-16.3) versus the MIM group.

Conclusions

The location of the incision is relevant to avoid incisional hernias. Transverse incisions should be used as the first option. When a midline incision is needed, a prophylactic mesh could be considered in high risk patients because it is safe and associated with low morbidity.  相似文献   
9.
10.
器官移植术是20世纪出现的针对器官功能衰竭的最有效治疗方法,每年拯救全球超过12万例患者。但供器官短缺的现状,与器官移植技术和辅助药物的发展不匹配,制约了器官移植事业的发展。我国自2015年起已成为全球器官捐献和移植大国之一,2017年公民逝世后器官捐献数量超过5 000例,占全球捐献总量的15%以上。黄洁夫教授总结的器官捐献与移植"中国模式"得到了世界卫生组织、国际移植界的高度重视和充分肯定。本文通过整理全球及各国的器官捐献与移植数据,剖析全球现状与发展趋势,进一步探索我国公民器官捐献的影响因素并提出针对性的应对策略,以期实现我国器官捐献和移植的"自给自足"。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号