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   20329篇
  免费   3274篇
  国内免费   147篇
耳鼻咽喉   416篇
儿科学   631篇
妇产科学   526篇
基础医学   1725篇
口腔科学   232篇
临床医学   4694篇
内科学   3809篇
皮肤病学   374篇
神经病学   1651篇
特种医学   497篇
外科学   2301篇
综合类   484篇
现状与发展   2篇
一般理论   29篇
预防医学   3094篇
眼科学   333篇
药学   1001篇
  2篇
中国医学   121篇
肿瘤学   1828篇
  2024年   93篇
  2023年   516篇
  2022年   256篇
  2021年   504篇
  2020年   699篇
  2019年   456篇
  2018年   848篇
  2017年   830篇
  2016年   878篇
  2015年   973篇
  2014年   1076篇
  2013年   1605篇
  2012年   1249篇
  2011年   1208篇
  2010年   994篇
  2009年   1060篇
  2008年   1055篇
  2007年   1037篇
  2006年   1047篇
  2005年   919篇
  2004年   824篇
  2003年   721篇
  2002年   694篇
  2001年   298篇
  2000年   191篇
  1999年   265篇
  1998年   391篇
  1997年   379篇
  1996年   406篇
  1995年   345篇
  1994年   241篇
  1993年   182篇
  1992年   134篇
  1991年   142篇
  1990年   118篇
  1989年   131篇
  1988年   118篇
  1987年   91篇
  1986年   77篇
  1985年   95篇
  1984年   81篇
  1983年   78篇
  1982年   56篇
  1981年   78篇
  1980年   52篇
  1979年   25篇
  1978年   33篇
  1977年   28篇
  1976年   26篇
  1975年   22篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
BACKGROUND: Nurse leaders in Fiji are currently involved in meeting the challenges of being at the forefront of an AusAID supported Health Sector Improvement process. Fiji is experiencing the same shortages of health professionals (including nurses) as is occurring internationally, while simultaneously striving to improve the quality of its health services. PRIMARY ARGUMENT: This paper provides information about the current situation in relation to health services in Fiji, and describes strategies being undertaken by the nurse leaders of Fiji to meet the challenge of leading an exciting reform process. James Cook University, School of Nursing Sciences, has been privileged to support the provision of contemporary leadership and management education for current and future nurse leaders in the Fiji Health Sector as a component of a current education program to educate registered nurses to bachelor level. This paper will provide an overview of the current Fiji Health Sector Improvement Program, with a particular focus on the preparation of nurse leaders. CONCLUSION: There is an ongoing need to understand beliefs and values, and styles of interaction and communication, and indeed, ideas about time. With collaboration between Australian academics and Fiji tutors from the Fiji School of Nursing, the program appears to be remarkably successful.  相似文献   
92.
93.
94.
A ward-based token economy programme which formed one part of a larger rehabilitative service for long-stay psychiatric patients is described. The clinical effectiveness of the programme is examined by the use of various nursing, psychological and psychiatric assessments before and after the patients' treatment on the ward, and the progress of former patients is followed-up as they move to different parts of the rehabilitation service. Significant clinical gains in patients' psychiatric symptomatology and problem behaviour on the ward are reported, although there were indications that improvement was not fully maintained as the patients moved on to other parts of the service. Comparison of the present clinical programme with the earlier research programmes on the ward indicated that the present regime was superior. The advantages and problems of token economy as a rehabilitative facility are discussed, outlining the various different roles for token economy with psychiatric rehabilitation. Finally, the future of token economy for long-stay patients is considered, questioning whether it might more appropriately be replaced by other structured ward programmes.  相似文献   
95.
SJL/J mice challenged with myelin basic protein (MBP) in complete Freund's adjuvant (CFA) developed only mild chronic-relapsing experimental allergic encephalomyelitis (EAE) with very low incidence. However, treatment of challenged mice with anti-infeferonγ (IFN-γ) monoclonal antibody (mAb) determined severe disease in all cases. Similarly, in passive EAE, the addition of anti-IFN-γ to the in vitro MBP-activated cells at the time of transfer led to significant disease exacerbation in all recipients. The disease enhancing effect was observed only when the mAb was given at the time of active challenge or of passive transfer, but not at later times. Anti-interleukin-2 (IL-2) antibody had only a marginal effect in the active induction, but drastically reduced the manifestations of passive EAE, even when mixed with a disease-enhancing dose of anti-IFN-γ. These findings support the notion that IL-2 is required for disease induction whereas IFN-γ plays a disease-limiting role early in the development of EAE.  相似文献   
96.
97.
Trajectories of saccadic eye movements can be modulated by the presence of a competing visual distractor. It is proposed that the superior colliculus (SC) controls the initial deviation through competitive lateral interactions. Given the ramifications of connections between basal ganglia (BG) thalamo-cortical circuitry and the SC, it was anticipated that this modulation would be differentially effected in those with Huntington's disease, which in its early stages is primarily a disorder of the BG. Horizontal deviation was determined for exogenously driven and endogenously driven vertical saccades in the presence of peripheral distractors. For neurologically healthy participants, the initial trajectories of both saccade types curved away from distractor locations, as predicted. However, for HD participants exogenous saccades consistently deviated leftwards, irrespective of distractor location. Endogenous saccades also revealed anomalous horizontal deviation, with significant leftward deviation evident for saccades directed upward and significant rightward deviation for saccades directed downward. Further, both groups generated a comparable proportion of erroneous responses to distractor stimuli, but only neurologically healthy participants demonstrated a response time advantage for compatible target/distractor presentation. These results suggest anomalous regulation of distractor-related activity in HD.  相似文献   
98.
The pathophysiology of diabetic wound healing and the identification of new agents to improve clinical outcomes continue to be areas of intense research. There currently exist more than 10 different murine models of diabetes. The degree to which wound healing is impaired in these different mouse models has never been directly compared. We determined whether differences in wound impairment exist between diabetic models in order to elucidate which model would be the best to evaluate new treatment strategies. Three well-accepted mouse models of diabetes were used in this study: db/db, Akita, and streptozocin (STZ)-induced C57BL/6J. Using an excisional model of wound healing, we demonstrated that db/db mice exhibit severe impairments in wound healing compared with STZ and Akita mice. Excisional wounds in db/db mice show a statistically significant delay in wound closure, decreased granulation tissue formation, decreased wound bed vascularity, and markedly diminished proliferation compared with STZ, Akita, and control mice. There was no difference in the rate of epithelialization of the full-thickness wounds between the diabetic or control mice. Our results suggest that splinted db/db mice may be the most appropriate model for studying diabetic wound-healing interventions as they demonstrate the most significant impairment in wound healing. This study utilized a novel model of wound healing developed in our laboratory that stents wounds open using silicone splints to minimize the effects of wound contraction. As such, it was not possible to directly compare the results of this study with other studies that did not use this wound model.  相似文献   
99.
100.
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