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   226250篇
  免费   20171篇
  国内免费   4749篇
耳鼻咽喉   3362篇
儿科学   4310篇
妇产科学   3740篇
基础医学   18495篇
口腔科学   7392篇
临床医学   20765篇
内科学   21798篇
皮肤病学   2490篇
神经病学   11119篇
特种医学   5925篇
外国民族医学   12篇
外科学   21260篇
综合类   36401篇
现状与发展   9篇
一般理论   24篇
预防医学   29605篇
眼科学   2054篇
药学   23004篇
  359篇
中国医学   29481篇
肿瘤学   9565篇
  2024年   3540篇
  2023年   5317篇
  2022年   8578篇
  2021年   11091篇
  2020年   10816篇
  2019年   12011篇
  2018年   10482篇
  2017年   9082篇
  2016年   8092篇
  2015年   7548篇
  2014年   14785篇
  2013年   15070篇
  2012年   13319篇
  2011年   14339篇
  2010年   11563篇
  2009年   10074篇
  2008年   9407篇
  2007年   9417篇
  2006年   8051篇
  2005年   6815篇
  2004年   5704篇
  2003年   5125篇
  2002年   4011篇
  2001年   3284篇
  2000年   2937篇
  1999年   2421篇
  1998年   1907篇
  1997年   1743篇
  1996年   1391篇
  1995年   1346篇
  1994年   1197篇
  1993年   1042篇
  1992年   969篇
  1991年   868篇
  1990年   774篇
  1989年   764篇
  1988年   733篇
  1987年   655篇
  1986年   588篇
  1985年   1881篇
  1984年   2139篇
  1983年   1338篇
  1982年   1802篇
  1981年   1251篇
  1980年   1068篇
  1979年   957篇
  1978年   774篇
  1977年   595篇
  1976年   744篇
  1975年   508篇
排序方式: 共有10000条查询结果,搜索用时 10 毫秒
121.
目的 观察用常规方法及中西医结合方法治疗酒精性肝病的疗效差异。方法 将 5 6例酒精性肝病患者随机分为二组 ,对照组常规方法治疗 ,治疗组常规方法加中医辩证施治。结果 两组治疗三个月后 ,治疗组消化道症状消除 ,GOT/GPT恢复正常 ,γ -GT恢复正常 ,B超声像图好转等四个观察指标明显优于对照组。结论 中西医结合治疗酒精性肝病目前仍是可靠和可取的方法  相似文献   
122.
Summary.  Haemophilia, an ancient disease, now has sophisticated methods for diagnosis and treatment. The genetically missing factors can now be supplied by fractionation of human-derived (HD) plasma or with recombinant technology (r). Making therapeutic choices is complicated by past transfusion-transmitted diseases. HD and r products now have similar safety profiles. Several diseases have only HD products for treatment. These products remain important in our treatment armamentarium.  相似文献   
123.
Background From the endocrine surgeon’s perspective, it is important to know how endocrinologists manage patients with primary hyperparathyroidism (pHPT). The aim of this survey was to evaluate the preoperative diagnostic workup and referral pattern for parathyroidectomy by Swiss endocrinologists. Materials and methods The survey was conducted by mailing a questionnaire to all members of the Swiss Society for Endocrinology and Diabetes in spring 2005. Results The questionnaire was sent back by 68 of 124 endocrinologists (55%). The median annual case volume of patients with pHPT was 6 (range 1–50). The mean fraction of these patients referred for surgery was 59 ± 24%. This fraction was significantly higher in the German-speaking part of Switzerland than in the French-speaking part (67 ± 21% vs 51 ± 27%). When considering surgery for asymptomatic pHPT, 62% of the endocrinologists rely routinely on the recommendations of the NIH consensus conference and 86% on the subsequent guidelines of the workshop in 2002. Sixty-seven percent of the endocrinologists routinely perform localization studies before possible referral for surgical exploration. Typically, they consisted of an ultrasonography of the neck (93%) and a 99mTc-MIBI scintigraphy (80%). The impact of the availability of a minimally invasive surgical procedure on the number of patients referred for surgery seems to be considerable. Sixty-one percent of the participants would expand the indication for surgery if the operation could be done by a limited surgical approach. Conclusions In a relevant fraction of patients with pHPT, endocrinologists still do not regard curative therapy as mandatory. Surprisingly, there are significant cultural differences concerning referral patterns to surgery between the German-speaking and the French-speaking parts of Switzerland. Minimally invasive procedures seem to lower the threshold for referral for surgical therapy. This work was presented at the 2nd Biennial Congress of the ESES, May 2006, Krakow, Poland.  相似文献   
124.
Male genital oedema can be defined as swelling or the appearance of swelling of the scrotum and/or the penile shaft and prepuce. Despite the various causes of genital oedema reported in the published work, a concise approach to the evaluation and management has not been sufficiently addressed.  相似文献   
125.
126.
构筑健康教育工程实现社会医院双赢   总被引:1,自引:0,他引:1  
介绍了四川大学华西医院10年来构筑普及医疗卫生保健知识系统工程的认识体会、经验和取得的成效,指出医院在普及卫生保健知识中的职责和优势。  相似文献   
127.
128.
The public sector in Britain has been subjected to over a decade of major reform aimed at breaking up public service monopolies, at containing costs while at the same time opening services up to greater consumer choice. Health and social services have not been exempt from this revolution in the organization and management of public sector services. The long-standing policy of care in the community is being subjected to market principles and the introduction of a ‘contract culture’ very similar to the NHS reforms introduced in 1991. This paper reviews the origins of these developments in the doctrines of ‘new public management’, a movement which has proved attractive to policy-makers in many countries. Local authority social services departments have been identified as the lead agency for the development of a mixed economy of care following a review of community care policy by the government's health adviser, Sir Roy Griffiths, and a subsequent white paper. This paper examines the limited empirical evidence available on how managers and providers are meeting the challenge bestowed upon them, and concludes that most authorities are moving ahead cautiously if at all. Only a handful of authorities studied have embraced the reforms with any degree of enthusiasm. The paper concludes with an assessment of the reforms from two perspectives: a pessimistic one and an optimistic one. There are many worrying features of the reforms, not least among these being a lack of clarity over their intended purpose. Tensions and contradictions are plentiful, which places in jeopardy the certainty of the reforms in becoming user led rather than provider driven. A more optimistic scenario is that the changes are leading to a loosening up of services and practices which have often suffered from sclerotic tendencies, paternalism and sometimes complacency. If the reform process is skilfully handled and not rushed and if the ends are clearly established and communicated then users and carers could prove to be the principal beneficiaries.  相似文献   
129.
Health policy, epidemiology and power: the interest web   总被引:4,自引:4,他引:0  
The relation between epidemiological research results and policy-making is reviewed. Apparently, traditional models of policy-making(incrementalism, mixed scanning synoptic planning) do not explainwhy research findings are hardly used in policy-making procedures. It is suggested that this phenomenon is related to three determinantsof policy-making: (i) a bias stemming from sets of causal, finaland normative assumptions and presuppositions; (ii) interestwebs of groups in certain domains; and (iii) the power of organizationsto monitor and communicate. The conclusion is that epidemiologistsshould engage in the policy-making process more consciouslyand conscientiously.  相似文献   
130.
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