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   3625211篇
  免费   262950篇
  国内免费   10623篇
耳鼻咽喉   48912篇
儿科学   120073篇
妇产科学   99557篇
基础医学   509925篇
口腔科学   102392篇
临床医学   333306篇
内科学   707333篇
皮肤病学   85440篇
神经病学   293454篇
特种医学   137719篇
外国民族医学   952篇
外科学   541630篇
综合类   80080篇
现状与发展   11篇
一般理论   1393篇
预防医学   277758篇
眼科学   84177篇
药学   265430篇
  24篇
中国医学   8774篇
肿瘤学   200444篇
  2021年   28677篇
  2019年   29155篇
  2018年   41372篇
  2017年   31550篇
  2016年   35852篇
  2015年   40781篇
  2014年   56354篇
  2013年   83666篇
  2012年   112923篇
  2011年   119568篇
  2010年   71595篇
  2009年   67930篇
  2008年   111018篇
  2007年   118116篇
  2006年   119716篇
  2005年   114887篇
  2004年   110313篇
  2003年   106115篇
  2002年   102468篇
  2001年   175993篇
  2000年   180182篇
  1999年   151648篇
  1998年   43225篇
  1997年   38101篇
  1996年   38186篇
  1995年   37035篇
  1994年   33816篇
  1993年   31657篇
  1992年   117185篇
  1991年   112997篇
  1990年   109364篇
  1989年   105661篇
  1988年   96606篇
  1987年   94632篇
  1986年   88838篇
  1985年   84808篇
  1984年   63219篇
  1983年   53644篇
  1982年   31462篇
  1979年   55913篇
  1978年   39252篇
  1977年   33405篇
  1976年   31142篇
  1975年   32957篇
  1974年   39315篇
  1973年   37580篇
  1972年   35094篇
  1971年   32574篇
  1970年   30100篇
  1969年   28769篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
22.
Immunoglobulin light chain amyloidosis (AL) commonly presents with nephrotic range proteinuria, heart failure with preserved ejection fraction, nondiabetic peripheral neuropathy, unexplained hepatomegaly or diarrhea, and should be considered in patients presenting with these symptoms. More importantly, patients being monitored for smoldering multiple myeloma and a monoclonal gammopathy of undetermined significance (MGUS) are at risk for developing AL amyloidosis. MGUS and myeloma patients that have atypical features, including unexplained weight loss; lower extremity edema, early satiety, and dyspnea on exertion should be considered at risk for light chain amyloidosis. Overlooking the diagnosis of light chain amyloidosis leading to therapy delay is common, and it represents an error of diagnostic consideration. Herein we provide a review of established and investigational treatments for patients with AL amyloidosis and provide algorithms for workup and management of these patients.Subject terms: Myeloma, Chemotherapy  相似文献   
23.
24.
25.
26.
BackgroundComminuted patellar fractures are not rare, and the ideal treatment method remains controversial. The present study was conducted to evaluate effects and compare complications of two different methods used to treat comminuted patellar fractures.MethodsFrom March 2010 to August 2016, 102 cases of 34-C2 or 34-C3 comminuted patellar fractures were treated at our hospital, wherein patients received two different treatments: titanium cable tension band with cerclage method (group A) and intrafragmentary screws with X-shaped plating technique (group B). At follow-ups, articular step-off, range of motion (ROM), Lysholm scores, time of union, and complications were recorded and analyzed. Radiographic and clinical data as well as rate of complications were statistically analyzed.ResultsIn total, 87 patients were included in the final analysis (n = 47 in group A and n = 40 in group B). No significant differences were noted in terms of cost of implant, age, gender, rate of 34-C3 fractures, rate of layered inferior pole fractures, postoperative articular step-off and union time. At 2-year follow-up, average Lysholm scores, ROM and rate of complications were (89.0 ± 4.5), (122°±12°) and (27.7%) in group A and (90.2 ± 3.9), (124°±11°) and (17.5%) in group B, respectively, with no significant differences (p > 0.05). The mean time of surgery in group B was shorter than that in group A with significant difference (p < 0.05).ConclusionsTreatment using the intrafragmentary screws and plate method for amenable comminuted patellar fractures achieved similar complication rate and favorable functional outcomes at the 2-year follow-up, which was comparable to the titanium cable tension band with cerclage method. Thus, the intrafragmentary screws and plate method is effective, safe and convenient for 34-C2/C3 comminuted patellar fractures, especially appropriate for patients with layered fragments.  相似文献   
27.
28.
29.
Abstract

Purpose

Financial hardship can be a major cause of distress among persons with cancer, resulting in chronic stress and impacting physical and emotional health. This paper provides an analysis of the lived experience of cancer patients’ financial hardship from diagnosis to post-treatment.  相似文献   
30.
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