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   227800篇
  免费   54179篇
  国内免费   9611篇
耳鼻咽喉   2554篇
儿科学   6065篇
妇产科学   2209篇
基础医学   37627篇
口腔科学   7613篇
临床医学   30788篇
内科学   43460篇
皮肤病学   8910篇
神经病学   20095篇
特种医学   7506篇
外国民族医学   75篇
外科学   27544篇
综合类   25786篇
现状与发展   33篇
一般理论   36篇
预防医学   14804篇
眼科学   4942篇
药学   22941篇
  141篇
中国医学   9629篇
肿瘤学   18832篇
  2024年   614篇
  2023年   2492篇
  2022年   6346篇
  2021年   9164篇
  2020年   10520篇
  2019年   15320篇
  2018年   14966篇
  2017年   15868篇
  2016年   16230篇
  2015年   18227篇
  2014年   19756篇
  2013年   19809篇
  2012年   15270篇
  2011年   16000篇
  2010年   16990篇
  2009年   11820篇
  2008年   10243篇
  2007年   9056篇
  2006年   8421篇
  2005年   7560篇
  2004年   5957篇
  2003年   5838篇
  2002年   5169篇
  2001年   4478篇
  2000年   3936篇
  1999年   3176篇
  1998年   1857篇
  1997年   1984篇
  1996年   1440篇
  1995年   1351篇
  1994年   1234篇
  1993年   865篇
  1992年   1078篇
  1991年   958篇
  1990年   874篇
  1989年   786篇
  1988年   695篇
  1987年   615篇
  1986年   564篇
  1985年   456篇
  1984年   398篇
  1983年   327篇
  1982年   278篇
  1981年   235篇
  1980年   200篇
  1979年   202篇
  1978年   197篇
  1977年   212篇
  1976年   196篇
  1974年   158篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
目的探讨乳头溢液的渗断和治疗方法,为合理的治疗提供科学依据。方法回顾分析手术治疗的207例乳头溢液病例资料。结果(1)在非哺乳期间发生乳头溢液多属病理性溢液;(2)通过美蓝法或平针头指示法行区段切除术,安全准确。结论(1)乳头溢液特别足血性溢液应手术治疗.对早期发现和早期治疗乳腺癌有鼋要的临床意义。(2)乳头溢液伴肿块者,不沧年龄大小、溢液性质均应手术治疗。  相似文献   
102.
Objective: Two major changes have occurred in inguinal hernia repair during the last two decades: (i) the use of tension‐free mesh repair; and (ii) the application of laparoscopic technique for repair. The aims of the present study were to study: (i) how inguinal hernia repair was carried out; and (ii) the outcome of inguinal hernia repair in Hospital Authority (HA) hospitals. Methodology: This was a retrospective analysis on 8311 elective inguinal hernia repairs performed in 16 HA hospitals from January 2001 to December 2003. The mean age was 63.9 ± 14.2 years, and the male to female ratio was 22.0 : 1.0. Among these, 869 (10.5%) repairs were performed with the laparoscopic approach and 7442 (89.5%) repairs with the open approach. The proportion of laparoscopic hernia repair increased from 8.7% to 12.6%. Results: For open repair, 39% of cases were carried out with regional anaesthesia, 32% with general anaesthesia and 29% with local anaesthesia (LA). Furthermore, mesh repair was used in 88% of the patients. For laparosocpic repair, 98.4% of cases were carried out under general anaesthesia, and all patients had mesh repair using the totally extraperitoneal approach. A significantly higher proportion of bilateral repair and recurrent hernia repair was performed with the laparoscopic approach (P = 0.000). For primary unilateral repair, there was no significant difference in the postoperative length of stay (LOS) and the total LOS between the laparoscopic and the open surgery groups. No difference in LOS was found in recurrent hernia repair between the two groups. With respect to bilateral repair, both the preoperative LOS (P = 0.036) and total LOS (P = 0.039) were shorter in the laparoscopic group. Furthermore, a significantly higher proportion of day‐surgery patients was observed in the laparoscopic group than the open surgery group (21.3%vs 16.9%, P = 0.001). Nevertheless, when only the results of 2003 were analyzed, the postoperative LOS (P = 0.000) and total LOS (P = 0.000) were significantly shorter in the laparoscopic group than the open surgery group. The LOS parameters were significantly shorter in the open surgery LA subgroup compared with the non‐LA subgroup (P = 0.000), and they were not different from those in the laparoscopic group. Conclusions: The open mesh repair is the predominant approach for inguinal hernia repair in HA hospitals. The originally described local anaesthetic approach was under utilized, although it resulted in good outcome. The use of laparoscopic hernia repair is increasing and a learning curve was recently observed with improved outcome.  相似文献   
103.
目的分析和总结残胃癌的外科诊断、治疗及预后情况。方法对1990年以来收治的35例残胃癌的发病率、临床表现、治疗情况和预后进行回顾性分析。结果首次胃切除以胃溃疡为主,占65.7%,首次手术BillrothⅡ式占82.9%(29/35)。残胃癌早期缺乏特异的症状,主要为上腹部隐痛不适,首次手术距临床诊断残胃癌的间隔时间平均为16.3年。本组残胃癌手术切除率及根治性切除率分别为77.1%和54.3%,根治性切除患者1、3、5年生存率分为78.9%、52.6%、36.8%,Ⅰ期、Ⅱ期患者的5年生存率为72.7%。结论胃良性病行手术治疗时以BillrothⅠ式为首选,定期胃镜检查是早期诊断残胃癌的关键,根治性切除是治疗残胃癌的有效方法及影响残胃癌预后的重要因素。  相似文献   
104.
105.
Aims To measure the prevalence of low high‐density lipoprotein (HDL)‐cholesterol (men < 1.03 mmol/l; women < 1.29 mmol/l) in European Type 2 diabetic patients receiving treatment for dyslipidaemia. Methods The pan‐European Survey of HDL‐cholesterol measured lipids and other cardiovascular risk factors in 3866 patients with Type 2 diabetes and 4436 non‐diabetic patients undergoing treatment for dyslipidaemia in 11 European countries. Results Diabetic patients were more likely to be obese or hypertensive than non‐diabetic patients. Most patients received lifestyle interventions (87%) and/or a statin (89%); treatment patterns were similar between groups. Diabetic patients had [means (SD)] lower HDL‐cholesterol [1.22 (0.37) vs. 1.35 mmol/l (0.44) vs. non‐diabetic patients, P < 0.001] and higher triglycerides [2.32 (2.10) vs. 1.85 mmol/l (1.60), P < 0.001]. More diabetic vs. non‐diabetic patients had low HDL‐cholesterol (45% vs. 30%), high triglycerides (≥ 1.7 mmol/l; 57% vs. 42%) or both (32% vs. 19%). HDL‐cholesterol < 0.9 mmol/l was observed in 18% of diabetic and 12% of non‐diabetic subjects. Differences between diabetic and non‐diabetic groups were slightly greater for women. LDL‐ and total cholesterol were lower in the diabetic group [3.02 (1.05) vs. 3.30 mmol/l (1.14) and 5.12 (1.32) vs. 5.38 mmol/l (1.34), respectively, P < 0.001 for each]. Conclusions Low HDL‐cholesterol is common in diabetes: one in two diabetic women has low HDL‐cholesterol and one diabetic man in four has very low HDL‐cholesterol. Management strategies should include correction of low HDL‐cholesterol to optimize cardiovascular risk in diabetes.  相似文献   
106.
107.
108.
通过8名健康志愿者服药后的对照实验,用微生物法检测血药浓度,按一室模型配置求算药物动力学参数,探讨西咪替丁对林可霉素体内过程的影响。结果表明,西咪替丁不能改变林可霉素的吸收速率(Ka)和消除速率(Ke),但可通过增加其吸收程度或改变其分布容积,使林可霉素的血药浓度和生物利用度分别增加约19%和27%。  相似文献   
109.
110.
综合疗法治疗乳腺增生62例   总被引:1,自引:0,他引:1  
我科于2005年6月~2006年12月用乳癖消结合逍遥丸内服、耳穴埋压治疗乳腺增生62例,获得满意疗效,现介绍如下。  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