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   3323篇
  免费   530篇
  国内免费   62篇
耳鼻咽喉   8篇
儿科学   38篇
妇产科学   19篇
基础医学   257篇
口腔科学   26篇
临床医学   277篇
内科学   352篇
皮肤病学   11篇
神经病学   117篇
特种医学   85篇
外科学   781篇
综合类   332篇
一般理论   9篇
预防医学   1223篇
眼科学   41篇
药学   188篇
  1篇
中国医学   81篇
肿瘤学   69篇
  2024年   9篇
  2023年   86篇
  2022年   133篇
  2021年   230篇
  2020年   239篇
  2019年   209篇
  2018年   184篇
  2017年   207篇
  2016年   167篇
  2015年   142篇
  2014年   227篇
  2013年   241篇
  2012年   170篇
  2011年   208篇
  2010年   149篇
  2009年   148篇
  2008年   167篇
  2007年   128篇
  2006年   110篇
  2005年   111篇
  2004年   103篇
  2003年   97篇
  2002年   70篇
  2001年   46篇
  2000年   47篇
  1999年   37篇
  1998年   37篇
  1997年   33篇
  1996年   22篇
  1995年   19篇
  1994年   14篇
  1993年   18篇
  1992年   13篇
  1991年   13篇
  1990年   8篇
  1989年   11篇
  1988年   10篇
  1987年   9篇
  1986年   11篇
  1985年   4篇
  1984年   7篇
  1983年   5篇
  1982年   3篇
  1981年   6篇
  1979年   1篇
  1978年   1篇
  1977年   1篇
  1976年   1篇
  1974年   1篇
  1971年   1篇
排序方式: 共有3915条查询结果,搜索用时 0 毫秒
991.
992.
993.
994.
995.
Public perception and misperceptions of socioeconomic disparities affect the willingness to donate organs. To improve our understanding of the flow of deceased donor kidneys, we analyzed socioeconomic status (SES) and racial/ethnic gradients between donors and recipients. In a retrospective cohort study, traditional demographic and socioeconomic factors, as well as an SES index, were compared in 56,697 deceased kidney donor and recipient pairs transplanted between 2007 and 2012. Kidneys were more likely to be transplanted in recipients of the same racial/ethnic group as the donor (p < 0.001). Kidneys tended to go to recipients of lower SES index (50.5% of the time, p < 0.001), a relationship that remained after adjusting for other available markers of donor organ quality and SES (p < 0.001). Deceased donor kidneys do not appear to be transplanted from donors of lower SES to recipients of higher SES; this information may be useful in counseling potential donors and their families regarding the distribution of their organ gifts.  相似文献   
996.
The new national Kidney Allocation System of the Organ Procurement and Transplantation Network (OPTN), effective as of December 4, 2014, was designed to improve the chances of transplanting the most highly sensitized patients on the waitlist, those with calculated panel reactive antibody values of 98%, 99% and 100%. Recently, it was suggested that these highly sensitized patients will experience inequitable access, given the reported high prevalence of antibodies to HLA‐DP, and the fact that only about 1/3 of deceased donors are typed for HLA‐DP antigens. Here we report that 320/2948 flow cytometric crossmatches performed for the Northwestern transplant program over the past 28 months were positive solely due to HLA‐DP donor‐specific antibodies (11%; 16.5% of patients with HLA antibodies—sensitized patients). We further show that 58/207 (12%) HLA‐DR serologically matched donor‐recipient pairs had a positive B cell flow crossmatch due to donor‐specific HLA class II antibodies, and 2/34 (6%) serologic zero‐HLA‐A‐B‐DR mismatch had a positive flow crossmatch due to HLA‐DSA. We therefore provide information regarding the necessity and importance of complete donor HLA typing including both chains of the HLA‐DP antigen (encoded by HLA‐DPA1 and HLA‐DPB1) at the time of organ offer.  相似文献   
997.
998.
对岗位绩效工资的发放方法提出指导性意见。在对课题研究成果的应用情况进行总结的基础上对绩效考核整体设计、完善绩效考核组织构架、建立信息化绩效考核档案等方面提出具体应用的建议。  相似文献   
999.

Objectives

To describe the profile of patients evaluated by Nurse Care Management in an Emergency Department and identify the type of alternative healthcare resource assigned and report the results of clinical practice.

Material and methods

Prospective follow-up, on admission to the Emergency Department in an acute hospital and on discharge from the alternative healthcare resource, of patients assessed by Nurse Care Management, from July to December 2015. The patient characteristics, social environment and results of clinical practice were studied.

Results

190 patients were included of whom 13 were readmitted (6.8%). 122 (59.8%) cases from the Emergency Department were referred to to intermediate care facilities, 71 (34.8%) cases for domiciliary care, 10 (4.9%) cases were referred to an acute care hospital and 1 (0.5%) died. Patients referred to intermediate care were more complex, presented geriatric syndromes as their reason for admission and diagnosed with dementia, while those referred to home care presented more respiratory and cardiovascular illnesses (p <0.05). The mean Barthel Index and polypharmacy before emergency admission were higher than at the time of discharge from the alternative healthcare resource (p <0.05).

Conclusions

Patients presenting with advanced age, complexity, comorbidity, are referred to intermediate care facilities or domiciliary care, they are admitted to acute care hospitasl and are readmitted less than other patients. After being discharged from the alternative resource, they lose functional capacity and present less polypharmacy.  相似文献   
1000.
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