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   548篇
  免费   64篇
  国内免费   9篇
儿科学   3篇
妇产科学   3篇
基础医学   56篇
口腔科学   2篇
临床医学   139篇
内科学   121篇
皮肤病学   4篇
神经病学   95篇
特种医学   4篇
外科学   16篇
综合类   58篇
预防医学   45篇
眼科学   7篇
药学   17篇
中国医学   3篇
肿瘤学   48篇
  2024年   1篇
  2023年   14篇
  2022年   8篇
  2021年   9篇
  2020年   10篇
  2019年   24篇
  2018年   13篇
  2017年   24篇
  2016年   17篇
  2015年   26篇
  2014年   38篇
  2013年   55篇
  2012年   30篇
  2011年   37篇
  2010年   28篇
  2009年   29篇
  2008年   28篇
  2007年   44篇
  2006年   29篇
  2005年   30篇
  2004年   20篇
  2003年   14篇
  2002年   15篇
  2001年   16篇
  2000年   10篇
  1999年   3篇
  1998年   11篇
  1997年   8篇
  1996年   6篇
  1995年   2篇
  1994年   4篇
  1993年   3篇
  1992年   2篇
  1991年   1篇
  1990年   2篇
  1988年   2篇
  1987年   1篇
  1983年   2篇
  1982年   2篇
  1980年   1篇
  1974年   1篇
  1969年   1篇
排序方式: 共有621条查询结果,搜索用时 15 毫秒
21.
22.
Outcomes of nonmyeloablative (NMA) haploidentical (haplo) blood or marrow transplant (BMT) with post-transplantation cyclophosphamide (PTCy) using non–first-degree relatives are unknown. We evaluated 33 consecutive adult patients (median age, 56 years) with hematologic malignancies who underwent NMA haplo T cell–replete BMT with PTCy at Johns Hopkins using second- or third-degree related donors. Donors consisted of 10 nieces (30%), 9 nephews (27%), 7 first cousins (21%), 5 grandchildren (15%), and 2 uncles (6%). Thirty-one patients (94%) reached full donor chimerism by day 60. The estimated cumulative incidence (CuI) of grades II to IV acute graft-versus-host disease (aGVHD) at day 180 was 24% (90% confidence interval [CI], 9% to 38%). Only 1 patient experienced grades III to IV aGVHD. At 1 year the CuI of chronic GVHD was 10% (90% CI, 0% to 21%). The CuI of nonrelapse mortality at 1 year was 5% (90% CI, 0% to 14%). At 1 year the probability of relapse was 31% (90% CI, 12% to 49%), progression-free survival 64% (90% CI, 48% to 86%), and overall survival 95% (90% CI, 87% to 100%). The 1-year probability of GVHD-free, relapse-free survival was 57% (90% CI, 41% to 79%). NMA haplo BMT with PTCy from non–first-degree relatives is an acceptably safe and effective alternative donor platform, with results similar to those seen with first-degree relatives.  相似文献   
23.
BACKGROUND: In Sweden women with newly diagnosed breast cancer are admitted to surgical wards in order to undergo surgery and receive postoperative care. On these wards, nursing staff take care of women both with newly diagnosed breast cancer and those with cancer in advanced stages. Nurses have to meet the varying needs of patients and their relatives. AIM: To describe nurses' opinions of the need for care and support for women and their relatives in connection with surgery for breast cancer, as well as their own need for support on a surgical ward. METHODS: Thirty-one nurses from a surgical ward participated in semi-structured interviews. The interviews were tape-recorded and transcribed verbatim. Thereafter a step-by-step, qualitative content analysis was carried out. RESULTS: The nurses described the need to talk and receive information as being the most important among women and their relatives, as well as among themselves. Only a few nurses mentioned the need for physical care among the women. Contact with relatives was described as being almost nonexistent. There was a discrepancy between what nurses described as important needs and how these needs were provided for. CONCLUSION: This study shows that what the nurses described as being the most important needs, and the way how these needs were provided for, was more often seen from a theoretical point of view with few examples of self-experienced situations in the daily care. Needs among women and their relatives seemed to be not fully known to nurses and therefore, possibly, were not met. Nurses themselves had a pronounced need for support, which was sometimes unsatisfactorily met.  相似文献   
24.
目的:探讨缓解期双相情感障碍I型、II型患者及其近亲属认知功能的临床特征。方法对50例缓解期双相障碍I型患者(BP‐1组)、50例缓解期双相障碍II型患者(BP‐2组)、50名健康近亲属(亲属组)及50名正常人群(对照组)采用持续操作测验和威斯康星卡片分类测验进行测评分析。结果 BP‐1组、BP‐2组及亲属组持续操作测验的正确数评分显著低于对照组(P<0.05),且BP‐1组显著低于BP‐2组和亲属组(P<0.05)。BP‐1组、BP‐2组和亲属组威斯康星卡片分类测验的错误应答数、非持续性错误数显著高于对照组(P<0.05或0.01);BP‐1组、亲属组显著高于BP‐2组(P<0.01);BP‐1组和亲属组总应答数、完成分类数、正确率、完成第一个分类数所需要应答数、不能维持完整分类数与对照组及BP‐2组比较差异有显著性(P<0.05或0.01)。结论缓解期双相情感障碍I型、II型患者及其近亲属存在多维度认知功能损害,I型患者任务管理能力损害较明显,II型患者注意力损害明显。  相似文献   
25.
26.
27.
28.
目的调查青岛城区T2DM一级亲属(FDR)不同糖代谢状态人群的糖、脂代谢异常的患病率。方法从该城区糖尿病流行病学调查数据库中,抽取既往无DM病史者1392例(T2DM患者FDR528例,非糖尿病FDR864例)作为研究对象,检测血压、体脂、OGTT、胰岛素释放试验、血脂、血尿酸(suA),计算WHR、BMI等。结果(1)T2DM患者FDR新诊DM患病率(24.24%)明显高于非糖尿病FDR(17.01%),P=0.00;(2)在FDR新诊DM患者中,单纯FPG≥7.0mmol/L者占6.25%,单纯2hPG≥11.1mmol/L者占30.47%,两者均符合DM诊断标准者占63.28%;(3)糖尿病FDR组WHR、体脂、SBP、DBP、TG、LDL-C、SUA等均显著高于非糖尿病FDR组(P<0.01);(4)糖尿病FDR组一种以上代谢异常及代谢综合征的发生率均明显高于非糖尿病FDR组(P=0.00)。结论2型糖尿病一级亲属不仅DM患病率明显高于普通人群,而且常存在超重或肥胖、高血压和血脂异常。  相似文献   
29.
BACKGROUND: First-degree relatives of individuals with schizophrenia show cognitive impairments that are similar to but less severe than their ill relatives. We have shown that memory impairments can be improved and prefrontal cortical (PFC) activity increased in individuals with schizophrenia by providing beneficial encoding strategies. The current study used a similar paradigm to determine whether siblings of individuals with schizophrenia (SIBs) also show increases in brain activity when presented with beneficial encoding strategies. METHODS: Twenty-one SIBs and 38 siblings of healthy comparison subjects underwent functional magnetic resonance imaging scans while engaged in deep (abstract/concrete judgments) and shallow (orthographic judgments) encoding. Subjects were then given a recognition memory test. RESULTS: The groups did not differ on encoding or recognition accuracy, and the SIBs benefited from deep encoding to a similar degree as control subjects. The SIBs showed deep encoding-related activity in a number of PFC regions typically activated during semantic processing. However, SIBs showed more activity than control subjects in three subregions of PFC (left BA 44 & BA 47 bilaterally). CONCLUSIONS: Siblings of individuals with schizophrenia benefit from supportive verbal encoding conditions. Like individuals with schizophrenia, SIBs also show increased task-related activity in a larger number of PFC subregions than control subjects during deep verbal encoding.  相似文献   
30.
目的:分析护理本科生与母系2级亲属体质类型的相关性,为疾病预防保健和健康指导提供依据。方法采用中华中医药学会2009年4月发布实施的标准化中医体质量表,对800名护理本科生及其母系2级亲属进行问卷调查。结果护理本科生中平和质145例,占29.1%,母系2级亲属中外祖母平和质118人,占27.1%,外祖父平和质99人,占27.9%,偏颇体质中位居前三位的是:阳虚质、气虚质、淤血质。相关性分析显示:除了护理本科生平和质与外祖父没有相关性外,其余都与母系2级亲属呈正相关。结论母系2级亲属与护理本科生的体质类型有一定的相关性,结合母系2级亲属体质类型及后天因素调理体质,对防止护生体质状态的偏颇可能有一定的帮助。  相似文献   
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