全文获取类型
收费全文 | 7917篇 |
免费 | 865篇 |
国内免费 | 66篇 |
专业分类
耳鼻咽喉 | 19篇 |
儿科学 | 135篇 |
妇产科学 | 180篇 |
基础医学 | 203篇 |
口腔科学 | 158篇 |
临床医学 | 991篇 |
内科学 | 1107篇 |
皮肤病学 | 23篇 |
神经病学 | 224篇 |
特种医学 | 86篇 |
外科学 | 552篇 |
综合类 | 426篇 |
现状与发展 | 1篇 |
一般理论 | 10篇 |
预防医学 | 3696篇 |
眼科学 | 25篇 |
药学 | 827篇 |
2篇 | |
中国医学 | 49篇 |
肿瘤学 | 134篇 |
出版年
2024年 | 26篇 |
2023年 | 241篇 |
2022年 | 275篇 |
2021年 | 537篇 |
2020年 | 471篇 |
2019年 | 522篇 |
2018年 | 460篇 |
2017年 | 447篇 |
2016年 | 359篇 |
2015年 | 338篇 |
2014年 | 476篇 |
2013年 | 747篇 |
2012年 | 387篇 |
2011年 | 421篇 |
2010年 | 347篇 |
2009年 | 359篇 |
2008年 | 333篇 |
2007年 | 355篇 |
2006年 | 266篇 |
2005年 | 220篇 |
2004年 | 194篇 |
2003年 | 168篇 |
2002年 | 155篇 |
2001年 | 117篇 |
2000年 | 123篇 |
1999年 | 87篇 |
1998年 | 60篇 |
1997年 | 73篇 |
1996年 | 40篇 |
1995年 | 36篇 |
1994年 | 33篇 |
1993年 | 23篇 |
1992年 | 29篇 |
1991年 | 25篇 |
1990年 | 28篇 |
1989年 | 12篇 |
1988年 | 11篇 |
1987年 | 6篇 |
1986年 | 7篇 |
1985年 | 12篇 |
1984年 | 2篇 |
1983年 | 8篇 |
1982年 | 1篇 |
1981年 | 5篇 |
1980年 | 1篇 |
1977年 | 3篇 |
1974年 | 1篇 |
1973年 | 1篇 |
排序方式: 共有8848条查询结果,搜索用时 31 毫秒
51.
Policy measures to reduce socioeconomic health differences (SEHD)must be preceded by an analysis of the possibilities and desirabilityof a reduction. This paper argues that it is necessary to pursueequality in health, conceived as equal opportunities to achievehealth. This principle is justified as part of the principleof maximizing individual freedom of choice, and requires thateveryone has the opportunity to be as healthy as possible. Bymeans of this principle a distinction can be made between unjust,unavoidable, and acceptable health inequalities. The determinantsof SEHD which lead to inequalities considered unjust must besubject to policy. These are living conditions (physical andsocial environment and health care) and conditions of choice(e.g. the knowledge of an individual about the health risksof a certain behaviour). Even if SEHD are considered inequities,sometimes conflicting interests will make it difficult to proposea health policy to redress these inequities. These are partlythe consequence of the intersectoral character of a policy aimedat equality of opportunities to attain health, in which theimportance of health has to be weighed against other goals.Moreover the impact of such a policy on the individual freechoice has to be critically weighed. Finally in the contextof health care policy, conflicts between the principle of equalityand maximizing health can be expected. 相似文献
52.
53.
Background : The results of management of seminoma of the testis at the Department of Radiation Oncology St Vincent's Hospital, Sydney were evaluated retrospectively to: (i) establish that outcomes were in keeping with published results from centres in Australia and overseas; (ii) assess the impact of chemotherapy on management; and (iii) to determine ‘best practice’ management protocols based on our results and a review of the relevant literature. Methods : (i) Assessment of treatment results for stage I and II seminoma of the testis treated by post-orchidectomy radiotherapy and/or chemotherapy at St Vincent's Hospital between 1979 and 1993; (ii) literature review of published data from Australian and overseas centres on the management of seminoma of the testis, and in particular the use of surveillance or chemotherapy either alone, at time of relapse or combined with radiotherapy; and (iii) development of recommendations for use as management protocols in our department. Results : Our data and a review of the literature suggest that post-orchidectomy radiotherapy with chemotherapy for relapse in stage I and IIA disease results in long-term cure rates approaching 100%. Treatment with chemotherapy either routinely or selectively or using a surveillance policy is unlikely to show any improvement in outcome and may be less cost-effective and/or produce increased morbidity and the risk of secondary leukaemia. For stage IIB disease (5–10 cm) the use of initial combination chemotherapy with or without subsequent radiotherapy did not appear to give better outcomes than initial radical radiotherapy alone, reserving chemotherapy or further radiotherapy for relapse. For bulkier stage IIB disease (> 10cm). the use of initial chemotherapy plus consolidation radiotherapy appeared to be an appropriate treatment. Conclusions : Management protocols for seminoma of the testis at St Vincent's Hospital, Sydney Department of Radiation Oncology currently are (i) stage I, IA and IIB (5–10 cm): post-orchidectomy radiotherapy alone with chemotherapy or further radiotherapy for relapse; and (ii) stage IIB (> 10 cm) disease: initial chemotherapy post-orchidectomy followed by radiotherapy to sites of initial disease involvement. 相似文献
54.
Cardiovascular diseases (CVD) among non-communicable diseases are already a major public health challenge worldwide. A further increase in CVD is projected to occur over the next 25 years as a result of both adverse lifestyle changes and demographic shifts in the population age profile. The adverse impact of these health problems will affect women in particular, given the steady rise in the proportion of the aging population that will be women.The critical issue presently in the management of CVD is that we are not even adequately using the data that are available. Women still remain unaware that they are at risk, and information about women is not easily accessible to their physicians. This is a global issue and the need remains for worldwide initiatives with greater vigilance to identify these factors and make efforts to control them effectively.Currently, in scientific research, it is expected that the results of clinical research be analyzed for sex differences, sex- and gender-appropriateness, and sex- and gender-specific approaches for prevention, diagnosis, treatment, and counseling. To address the care discrepancy, the global community needs to develop a conducive environment within a comprehensive policy and operational framework to achieve favorable lifestyles, and CVD risk factor reduction for both men and women. 相似文献
55.
Dr. Steven Jonas 《The journal of primary prevention》1997,17(4):407-411
An imaginary conversation between an advocate of drug policy reform and a defender of thestatus quo. 相似文献
56.
Hospitals in sub-Saharan Africa: why we need more of what does not work as it should 总被引:2,自引:2,他引:0
W. Van Lerberghe X. de Béthune & V. De Brouwere 《Tropical medicine & international health : TM & IH》1997,2(8):799-808
This paper analyses the origins of today's crisis in the hospital sector in sub-Saharan Africa. Present trends in availability of hospital services are extrapolated to the future in order to provide a low-end estimate of the need for expansion of first referral level hospitals. This will not be possible without giving due priority to this sector, a commitment to considerable investments and reorientation of resources from tertiary to first referral level hospitals. It is to be feared that if this is not done, the backlog will increase, and, given the time lag before investments translate into operational services, there will be a major shortage of hospital services in sub-Saharan Africa within a decade. 相似文献
57.
背景 我国人口老龄化形势日益严重,家庭医生签约服务对助推分级诊疗制度建设、建立合理有序就医秩序发挥着重要作用,目前学者对家庭医生签约服务政策的研究主要集中于定性评价,较少有学者利用工具聚焦代表性政策对各篇进行定量评价。目的 定量评价我国中央层面的6篇家庭医生签约服务相关政策,分析政策优劣,在此基础上,提出促进我国家庭医生签约服务高质量发展的对策和措施,助力健康中国战略实施。方法 于2022-04-30,以“家庭医生”为关键词在北大法宝数据库进行全文检索,并在国务院网站进行相关内容检索,检索时限为2015-01-01至今。采用ROSTCM 6.0软件进行文本挖掘,然后以其结果为依据选择其中具有代表性的中央层面家庭医生签约服务相关政策,并基于政策一致性评价(PMC)指数模型对其进行量化评价。结果 依据纳入与排除标准检索获得相关政策32篇,家庭医生签约服务领域排名前5位的高频关键词为“签约服务”(274次)、“健康”(272次)、“医疗”(264次)、“家庭医生”(225次)、“签约”(180次),以其为依据共选择中央层面有代表性的家庭医生签约服务相关政策6篇,分别标记为P1~P6。政策量化... 相似文献
58.
Bartha Maria Knoppers 《American journal of medical genetics. Part A》2002,108(1):29-35
The word “serious” appears in laws and policies regarding genetics services but is not defined. Genetics professionals would most likely be consulted if definitions are made. We surveyed all U.S. board‐certified genetics services providers and all members of the European Society of Human Genetics (ESHG), Canadian College of Medical Geneticists (CCMG), and Ibero‐American Society of Human Genetics (IASHG), using anonymous, mailed questionnaires. Respondents were asked to list three conditions they considered lethal, three that were serious but not lethal, and three that were not serious. Of 3,317 asked to respond, 1,481 (45%) returned questionnaires. Analysis was limited to responses of the 1,264 (85%) who saw patients. Respondents listed 537 conditions, with extensive overlap between categories; 46% of conditions listed as serious were also listed as not serious and 41% were listed as lethal. Respondents did not want professional societies, laws, or national ethics committees to define serious. They favored individual patients as decision makers, with the help of individual doctors. Their reasons were that genetic disorders vary in expression, individuals perceive disorders differently, professional or legal definitions could be unfair to minority groups, definitions tend to be inflexible when new treatments appear. In the United States, most would not use a definition of serious to limit reproductive services, carrier screening, or neonatal intensive care; outside the United States, more supported limitations. There is not sufficient consensus among experienced genetics professionals to define serious genetic conditions for purposes of law or policy. Responses point to social and economic influences on perceptions of what constitutes a serious genetic disorder. © 2002 Wiley‐Liss, Inc. 相似文献
59.
The legislative background and current responsibilities of the new National Center for Health Care Technology (NCHCT) are discussed. The NCHCT's charge is to consider the stage of development, the actual or potential risks, costs and rate of use of health care technology. The role of Government in supporting new technologies, stimulating innovation and encouraging application of research products is considered. These issues are discussed in the context of the uncertainty inherent in planning and the formulation of public policy. 相似文献
60.
David Mechanic 《Clinical psychology》1997,4(3):272-275
An effective definition of psychopathology would be helpful in distinguishing between normal and abnormal behavior and would provide guidance for important public policy decisions. Overinclusive definitions, such as the capacity/disability formulation, do not provide meaningful direction for defining need or assessing eligibility for insurance or other entitlements. Coping failures due to lack of skill, inadequate preparation, or other factors should be distinguished from those due to dysfunction or disturbance of psychological mechanisms. The capacity/disability formulation encourages confusion between different performance decrements and gives no guidance for appropriate boundaries for psychotherapy. 相似文献