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   205470篇
  免费   68688篇
  国内免费   1259篇
耳鼻咽喉   3699篇
儿科学   7766篇
妇产科学   3701篇
基础医学   23618篇
口腔科学   10188篇
临床医学   40520篇
内科学   53474篇
皮肤病学   11034篇
神经病学   27236篇
特种医学   6472篇
外国民族医学   5篇
外科学   35395篇
综合类   539篇
现状与发展   40篇
一般理论   55篇
预防医学   20519篇
眼科学   3672篇
药学   9199篇
中国医学   1079篇
肿瘤学   17206篇
  2024年   557篇
  2023年   5276篇
  2022年   1531篇
  2021年   4987篇
  2020年   10865篇
  2019年   13600篇
  2018年   16172篇
  2017年   17528篇
  2016年   18554篇
  2015年   18670篇
  2014年   21527篇
  2013年   24532篇
  2012年   10253篇
  2011年   10155篇
  2010年   16149篇
  2009年   15012篇
  2008年   7916篇
  2007年   6047篇
  2006年   7176篇
  2005年   5514篇
  2004年   4794篇
  2003年   4389篇
  2002年   4377篇
  2001年   2971篇
  2000年   2150篇
  1999年   2362篇
  1998年   2652篇
  1997年   2400篇
  1996年   2346篇
  1995年   2126篇
  1994年   1451篇
  1993年   1244篇
  1992年   986篇
  1991年   888篇
  1990年   744篇
  1989年   711篇
  1988年   701篇
  1987年   569篇
  1986年   542篇
  1985年   475篇
  1984年   454篇
  1983年   466篇
  1982年   459篇
  1981年   430篇
  1980年   306篇
  1979年   181篇
  1978年   251篇
  1977年   248篇
  1976年   207篇
  1974年   166篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
81.
82.
The association between asbestos exposure, mainly in occupational settings, and malignant mesothelioma has been well established; this has prompted several countries to establish mesothelioma epidemiologic surveillance programs often at the request of national agencies. This review compares currently existing mesothelioma registries worldwide to develop a concept model for a US real-time case capture mesothelioma registry. Five countries were identified with a mesothelioma specific registry, including Italy, France, UK, Australia, and South Korea. All, except the UK, used interviews to collect exposure data. Linkage with the national death index was available or was in future plans for all registries. The registries have limited information on treatment, quality of life, and other patient-centered outcomes such as symptoms and pain management. To thoroughly collect exposure data, “real-time” enrollment is preferable; to maximize the capture of mesothelioma cases, optimal coverage, and a simplified consent process are needed.  相似文献   
83.
Acute lung injury (ALI) caused by systemic inflammatory response remains a leading cause of morbidity and mortality in critically ill patients. Management of patients with sepsis is largely limited to supportive therapies, reflecting an incomplete understanding of the underlying pathophysiology. Furthermore, there have been limited advances in the treatments for ALI. In this study, lung function and a histological analysis were performed to evaluate the impact of transient receptor potential vanilloid‐1 receptor (TRPV1) antagonist (capsazepine; CPZ) on the lipopolysaccharide (LPS)‐induced lung injury in mice. For this, adult mice pre‐treated with CPZ or vehicle received intraperitoneal injections of LPS or saline and 24 hr after, the mice were anaesthetized, and lung mechanics was evaluated. The LPS‐challenged mice exhibited substantial mechanical impairment, characterized by increases in respiratory system resistance, respiratory system elastance, tissue damping and tissue elastance. The pre‐treatment with CPZ prevented the increase in respiratory system resistance and decreased the increase in tissue damping during endotoxemia. In addition, mice pre‐treated with CPZ had an attenuated lung injury evidenced by reduction on collapsed area of the lung parenchyma induced by LPS. This suggests that the TRPV1 antagonist capsazepine has a protective effect on lung mechanics in ALI during endotoxemia and that it may be a target for enhanced therapeutic efficacy in ALI.  相似文献   
84.
85.
86.
87.
88.
Sonodynamic therapy (SDT) consists of the synergetic interaction between ultrasound and a chemical agent. In SDT, the cytotoxicity is triggered by ultrasonic stimuli, notably through cavitation. The unique features of SDT are relevant in the clinical context more than ever: the need for efficacy, accuracy, and safety while being noninvasive and preserving the patient's quality of life. However, despite the promising results of this technique, only a few clinical reports describe the use of SDT. The objective of this article is to provide an extensive overview of the clinical and preclinical research conducted in vivo on SDT, to identify the limitations, and to detail the developed strategies to overcome them.  相似文献   
89.
The profile and reach of physiotherapy has expanded in areas of extended scope of practice, and broader engagement with population needs beyond the individual treatment encounter. These changes raise increasingly complex ethical challenges evidenced by growth in physiotherapy-based ethics studies and discussions. This paper examines how a broad cross section of Australian physiotherapists perceive, interpret, and respond to ethical challenges in their work contexts and how professional codes of conduct are used in their practice. Using an interpretive qualitative methodology, purposive sampling of 88 members of national clinical special interest groups were recruited for focus group discussions. Narrative-based and thematic data analysis identified ethical challenges as emerging from specific clinical contexts, and influenced by health organizations, funding policies, workplace relationships, and individually held perspectives. Five themes were developed to represent these findings: (1) the working environment, (2) balancing diverse needs and expectation, (3) defining ethics, (4) striving to act ethically, and (5) talking about ethics. The results portray a diverse and complex ethical landscape where therapists encounter and grapple with ethical questions emerging from the impact of funding models and policies affecting clinical work, expanding boundaries and scope of practice and changing professional roles and relationships. Codes of conduct were described as foundational ethical knowledge but not always helpful for “in the moment” ethical decision-making. Based on this research, we suggest how codes of conduct, educators, and professional associations could cultivate and nurture ethics capability in physiotherapy practitioners for these contemporary challenges.  相似文献   
90.
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