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   35517篇
  免费   3193篇
  国内免费   39篇
耳鼻咽喉   434篇
儿科学   1189篇
妇产科学   1070篇
基础医学   4747篇
口腔科学   397篇
临床医学   5989篇
内科学   6170篇
皮肤病学   586篇
神经病学   3485篇
特种医学   676篇
外科学   3588篇
综合类   481篇
一般理论   44篇
预防医学   4443篇
眼科学   537篇
药学   2567篇
  2篇
中国医学   20篇
肿瘤学   2324篇
  2023年   189篇
  2022年   245篇
  2021年   633篇
  2020年   437篇
  2019年   662篇
  2018年   786篇
  2017年   656篇
  2016年   639篇
  2015年   749篇
  2014年   996篇
  2013年   1465篇
  2012年   2183篇
  2011年   2155篇
  2010年   1250篇
  2009年   1111篇
  2008年   1973篇
  2007年   2187篇
  2006年   2118篇
  2005年   2041篇
  2004年   1949篇
  2003年   1838篇
  2002年   1692篇
  2001年   694篇
  2000年   676篇
  1999年   641篇
  1998年   427篇
  1997年   366篇
  1996年   329篇
  1995年   303篇
  1994年   280篇
  1993年   249篇
  1992年   440篇
  1991年   451篇
  1990年   449篇
  1989年   422篇
  1988年   444篇
  1987年   378篇
  1986年   386篇
  1985年   324篇
  1984年   254篇
  1983年   241篇
  1982年   221篇
  1981年   216篇
  1980年   205篇
  1979年   236篇
  1978年   203篇
  1976年   145篇
  1975年   144篇
  1974年   171篇
  1973年   156篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
BackgroundTotal hip and knee arthroplasties are increasingly performed operations, and routine follow-up places huge demands on orthopedic services. This study investigates the effectiveness, patients’ satisfaction, and cost reduction of Virtual Joint Replacement Clinic (VJRC) follow-up of total hip arthroplasty and total knee arthroplasty patients in a university hospital. VJRC is especially valuable when in-person appointments are not advised or feasible such as during the COVID-19 pandemic.MethodsA total of 1749 patients who were invited for VJRC follow-up for knee or hip arthroplasty from January 2017 to December 2018 were included in this retrospective study. Patients were referred to VJRC after their 6-week postoperative review. Routine VJRC postoperative review was undertaken at 1 and 7 years and then 3-yearly thereafter. We evaluated the VJRC patient response rate, acceptability, and outcome. Patient satisfaction was measured in a subgroup of patients using a satisfaction survey. VJRC costs were calculated compared to face-to-face follow-up.ResultsThe VJRC had a 92.05% overall response rate. Only 7.22% required further in-person appointments with only 3% being reviewed by an orthopedic consultant. VJRC resulted in an estimated saving of £42,644 per year at our institution. The patients’ satisfaction survey showed that 89.29% of the patients were either satisfied or very satisfied with VJRC follow-up.ConclusionVJRC follow-up for hip and knee arthroplasty patients is an effective alternative to in-person clinic assessment which is accepted by patients, has high patient satisfaction, and can reduce the cost to both health services and patients.  相似文献   
2.
3.
4.
5.
6.
Since the 1990s, oral rabies vaccination (ORV) has been used successfully to halt the westward spread of the raccoon rabies virus (RV) variant from the eastern continental USA. Elimination of raccoon RV from the eastern USA has proven challenging across targeted raccoon (Procyon lotor) and striped skunk (Mephitis mephitis) populations impacted by raccoon RV. Field trial evaluations of the Ontario Rabies Vaccine Bait (ONRAB) were initiated to expand ORV products available to meet the rabies management goal of raccoon RV elimination. This study describes the continuation of a 2011 trial in West Virginia. Our objective was to evaluate raccoon and skunk response to ORV occurring in West Virginia for an additional two years (2012–2013) at 75 baits/km2 followed by three years (2014–2016) of evaluation at 300 baits/km2. We measured the change in rabies virus-neutralizing antibody (RVNA) seroprevalence in targeted wildlife populations by comparing levels pre- and post-ORV during each year of study. The increase in bait density from 75/km2 to 300/km2 corresponded to an increase in average post-ORV seroprevalence for raccoon and skunk populations. Raccoon population RVNA levels increased from 53% (300/565, 95% CI: 50–57%) to 82.0% (596/727, 95% CI: 79–85%) during this study, and skunk population RVNA levels increased from 11% (8/72, 95% CI: 6–20%) to 39% (51/130, 95% CI: 31–48%). The RVNA seroprevalence pre-ORV demonstrated an increasing trend across study years for both bait densities and species, indicating that multiple years of ORV may be necessary to achieve and maintain RVNA seroprevalence in target wildlife populations for the control and elimination of raccoon RV in the eastern USA.  相似文献   
7.
8.
Maternal and Child Health Journal - Background Prenatal substance use screening is recommended. The 4 P’s Plus screener includes questions on perceived problematic substance use in parents...  相似文献   
9.
10.
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