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   898篇
  免费   103篇
  国内免费   9篇
耳鼻咽喉   18篇
儿科学   34篇
妇产科学   10篇
基础医学   105篇
口腔科学   29篇
临床医学   241篇
内科学   190篇
皮肤病学   6篇
神经病学   32篇
特种医学   53篇
外科学   72篇
综合类   20篇
一般理论   3篇
预防医学   67篇
眼科学   1篇
药学   43篇
中国医学   1篇
肿瘤学   85篇
  2021年   22篇
  2019年   11篇
  2018年   22篇
  2017年   17篇
  2016年   20篇
  2015年   20篇
  2014年   40篇
  2013年   39篇
  2012年   25篇
  2011年   37篇
  2010年   23篇
  2009年   29篇
  2008年   46篇
  2007年   36篇
  2006年   28篇
  2005年   16篇
  2004年   21篇
  2003年   25篇
  2002年   24篇
  2001年   19篇
  2000年   20篇
  1999年   29篇
  1998年   29篇
  1997年   22篇
  1996年   27篇
  1995年   16篇
  1994年   21篇
  1993年   14篇
  1992年   21篇
  1991年   16篇
  1989年   13篇
  1988年   15篇
  1987年   16篇
  1986年   15篇
  1985年   18篇
  1984年   10篇
  1983年   14篇
  1982年   10篇
  1981年   13篇
  1980年   14篇
  1979年   8篇
  1978年   9篇
  1977年   11篇
  1976年   9篇
  1975年   12篇
  1974年   8篇
  1972年   8篇
  1971年   7篇
  1969年   8篇
  1968年   7篇
排序方式: 共有1010条查询结果,搜索用时 0 毫秒
71.
This study describes the role of acute hospital palliative care nurse consultants and makes recommendations about future directions for the role development of this role. While the palliative care nurse consultant role is accepted in the acute setting there is little evidence or literature about what contributes to the success of this role. A three-phase study was undertaken to describe the role of palliative care nurse consultants in acute hospitals in Melbourne, Australia. The first phase of the three-phase study, involving in-depth qualitative interviews with the palliative care nurse consultants, is reported in this article. Using open-ended semi-structured questions, 10 palliative care nurse consultants were interviewed using open-ended questions about aspects of their role and the interviews were thematically analysed. Four main themes were identified that clarified the role; being the internal link; being the lynch pin; being responsive and being challenged. The palliative care nurse consultants were the first point of introduction to palliative care and thus they saw a significant role in introducing the concept of palliative care to those requiring palliative care, their families and others. They are an important link between the settings of care required by people accessing palliative care—acute, in-patient palliative care and community care. The palliative care nurse consultants saw themselves in leadership positions that in some ways defy boundaries, because of the inherent complexity and diversity of the role. The palliative care nurse consultants’ role appears to be pivotal in providing expert advice to staff and people requiring palliative care, and connecting palliative care services both within the hospital and to external services.  相似文献   
72.
73.
74.
Alcohol drinking in MCH receptor-1-deficient mice   总被引:2,自引:0,他引:2  
Background: Recently, we demonstrated that exogenous melanin‐concentrating hormone (MCH) increases alcohol drinking in rats when administered into the brain. However, because the physiological relevance of this finding is unclear, we tested the hypothesis that endogenous MCH signaling enhances alcohol consumption. Methods: Alcohol intake was assessed in male and female wildtype (WT), heterozygous (HET), and homozygous MCH receptor‐1‐deficient (KO) mice. Mice were given 24‐hour access to a series of alcohol‐containing solutions. Following this, the mice were given limited (1‐hour) access to 10% alcohol. Finally, mice were allowed 24‐hour access to sucrose/quinine as a caloric control and a means to assess taste preference. A naïve cohort of male WT and KO mice was tested for alcohol clearance following intraperitoneal administration of 3 g/kg alcohol. Another naïve cohort of female mice was utilized to confirm that intracerebroventricular administration of MCH (5 μg) would augment alcohol drinking in mice. Results: Exogenous MCH enhanced 10% alcohol consumption in mice (saline=0.45±0.08 g/kg, 5 μg MCH=0.94±0.20 g/kg). Male KO mice consumed more 10% alcohol (11.50±1.31 g/kg) than WT (6.26±1.23 g/kg) and HET mice (6.49±1.23 g/kg) during ad libitum access. However, alcohol intake was similar among genotypes during 1 hour daily access. Male KO mice tended to consume less 17.75% sucrose+1.3 mM quinine than controls (WT=10.5±3.6, HET=7.5±1.7, KO=4.4±0.9 g/kg). Alcohol metabolism was similar between WT and KO mice. Conclusions: The finding that male KO consume more alcohol than WT and HET mice, are reminiscent of the counterintuitive reports that KO mice are hyperphagic and yet eat more when administered exogenous MCH. Changes in taste preference or alcohol metabolism do not appear to be important for the increased alcohol drinking in KO mice.  相似文献   
75.
复苏水平的进步已大大提高了烧伤患者的幸存者数目,烧伤休克死亡已较为罕见。21世纪,对烧伤创面的妥善处理很大程度上可使烧伤患者迅速恢复良好的功能。  相似文献   
76.
77.
OBJECTIVE: To evaluate whether seasonal early environmental exposures might influence later development of autoimmune disease, by assessing distributions of birth dates in groups of patients with idiopathic inflammatory myopathies (IIMs). METHODS: We assessed birth patterns in groups of patients with juvenile-onset IIM (n = 307) and controls (n = 3,942) who were born between 1970 and 1999, and in groups of patients with adult-onset IIM (n = 668) and controls (n = 6,991) who were born between 1903 and 1982. Birth dates were analyzed as circular data. Seasonal clustering was assessed by the Rayleigh test, and differences between groups by a rank-based uniform scores test. RESULTS: The overall birth distributions among patients with juvenile IIM and among patients with adult IIM did not differ significantly from those among juvenile and adult controls, respectively. Some subgroups of patients with juvenile IIM had seasonal birth distributions. Hispanic patients with juvenile-onset IIM had a seasonal birth pattern (mean birth date October 16) significantly different from that of Hispanic controls (P = 0.002), who had a uniform birth distribution, and from that of non-Hispanic patients with juvenile-onset IIM (P < 0.001), who had a mean birth date of May 2. Juvenile dermatomyositis patients with p155 autoantibody had a birth distribution that differed significantly from that of p155 antibody-negative juvenile dermatomyositis patients (P = 0.003). Juvenile IIM patients with the HLA risk factor allele DRB1*0301 had a birth distribution significantly different from those without the allele (P = 0.021). Similar results were observed for juvenile and adult IIM patients with the linked allele DQA1*0501, versus juvenile and adult IIM patients without DQA1*0501, respectively. No significant patterns in birth season were found in other subgroups. CONCLUSION: Birth distributions appear to have stronger seasonality in juvenile than in adult IIM subgroups, suggesting greater influence of perinatal exposures on childhood-onset illness. Seasonal early-life exposures may influence the onset of some autoimmune diseases later in life.  相似文献   
78.
79.
This paper reports on the findings of a study conducted into the perceptions of final year Project 2000 pre-registration students towards their pre-registration education programme The aim of the research was to discover how students perceive their training in terms of value, relevance, intellectual potency, teaching methods and organization Data were collected using the Hoste scale which has been developed for the evaluation of educational courses A convenience sample of students (n = 131) within one college of nursing were invited to participate Findings include a particularly high level of satisfaction with Project 2000 in terms of value, breadth and relevance Organization and liveliness of the course were perceived much less satisfactorily There was a trend for a statistically significant difference between the mean scores of the theoretical and practical components of the course The findings are discussed with particular reference to the perceptions of theory and practice within the educational programme  相似文献   
80.
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