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   4139616篇
  免费   305812篇
  国内免费   7876篇
耳鼻咽喉   57233篇
儿科学   136154篇
妇产科学   113954篇
基础医学   594392篇
口腔科学   119218篇
临床医学   381238篇
内科学   791203篇
皮肤病学   93147篇
神经病学   330376篇
特种医学   154712篇
外国民族医学   1102篇
外科学   621410篇
综合类   95341篇
现状与发展   17篇
一般理论   1576篇
预防医学   327626篇
眼科学   99439篇
药学   304189篇
  12篇
中国医学   9075篇
肿瘤学   221890篇
  2019年   33322篇
  2018年   46573篇
  2017年   35072篇
  2016年   39459篇
  2015年   44400篇
  2014年   62944篇
  2013年   94679篇
  2012年   129664篇
  2011年   138221篇
  2010年   82228篇
  2009年   77099篇
  2008年   128347篇
  2007年   136517篇
  2006年   137940篇
  2005年   133649篇
  2004年   128540篇
  2003年   123076篇
  2002年   118762篇
  2001年   191017篇
  2000年   196336篇
  1999年   164954篇
  1998年   48253篇
  1997年   42329篇
  1996年   42094篇
  1995年   39926篇
  1994年   36829篇
  1993年   34469篇
  1992年   128113篇
  1991年   124390篇
  1990年   120731篇
  1989年   116887篇
  1988年   107513篇
  1987年   105059篇
  1986年   98976篇
  1985年   95017篇
  1984年   71147篇
  1983年   60595篇
  1982年   35975篇
  1979年   65151篇
  1978年   45893篇
  1977年   38617篇
  1976年   36646篇
  1975年   38801篇
  1974年   47173篇
  1973年   45227篇
  1972年   42497篇
  1971年   39713篇
  1970年   37126篇
  1969年   35047篇
  1968年   32621篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
91.

Introduction

Several studies demonstrated that simulator-acquired skill transfer to the operating room is incomplete. Our objective was to identify trainee characteristics that predict the transfer of simulator-acquired skill to the operating room.

Methods

Trainees completed baseline assessments including intracorporeal suturing (IS) performance, attentional selectivity, self-reported use of mental skills, and self-reported prior clinical and simulated laparoscopic experience and confidence. Residents then followed proficiency-based laparoscopic skills training, and their skill transfer was assessed on a live-anesthetized porcine model. Predictive characteristics for transfer test performance were assessed using multiple linear regression.

Results

Thirty-eight residents completed the study. Automaticity, attentional selectivity, resident perceived ability with laparoscopy and simulators, and post-training IS performance were predictive of IS performance during the transfer test.

Conclusions

Promoting automaticity, self-efficacy, and attention selectivity may help improve the transfer of simulator-acquired skill. Mental skills training and training to automaticity may therefore be valuable interventions to achieve this goal.  相似文献   
92.
93.
94.
While previous randomised controlled trials and meta-analyses offer only limited evidence for the effectiveness of cognitive rehabilitation, qualitative studies examining patient perspectives report more positive outcomes. This meta-synthesis of qualitative studies examined patient perspectives of cognitive rehabilitation for memory, attention, and executive function problems in people with multiple sclerosis. Using set eligibility criteria, we screened electronic databases, reference lists, and academic networks for relevant papers. Seven papers (195 participants) were selected. Two independent researchers conducted quality appraisals of papers. Data analysis, guided by the thematic synthesis approach, yielded six main themes. These suggested that patients benefitted from the group environment in rehabilitation. Cognitive rehabilitation facilitated the participants’ reflection and awareness of their cognitive deficits, and was associated with increased knowledge and understanding of their illness. Increased strategy use was reported and associated with improvements in cognitive functioning and greater confidence and perseverance. Participants reported emotional and social improvements, and felt more optimistic. Overall, these changes had a positive impact on participants’ quality of life. This synthesis of qualitative studies indicates that people with multiple sclerosis who experience cognitive deficits benefit from cognitive rehabilitation programmes. This finding must, however, be viewed in light of the limitations of this meta-synthesis. The meta-synthesis was registered in the PROSPERO database under CRD42017040148.  相似文献   
95.
96.
We report two British cases of liver abscess, due to Klebsiella pneumoniae and associated with synchronous infection elsewhere, which required liver resection for definitive treatment. They illustrate the geographic spread of aggressive K pneumoniae liver infection and demonstrate the importance of early aggressive treatment.  相似文献   
97.
We report a Chinese family with members affected by epidermolytic ichthyosis (EI), caused by KRT gene mutations. The proband was a 14‐year‐old boy who had simultaneous appearance of nephroblastoma and epidermolytic ichthyosis (EI). Both the patient and his mother exhibited the specific clinical and pathological manifestations of EI. We analysed all exons and flanking sequences of the KRT1 and KRT10 genes using PCR, and found that the proband and his mother had a G>C transition at nucleotide position 1432 in exon 7 of KRT1, resulting in an amino acid substitution of glutamate (GAA) to glutamine (CAA) at codon 478 (E478Q). The KRT10 gene had no mutations.  相似文献   
98.
99.
Henna, derived from a combination of natural leaves and coloring additives, is a common decorative dye traditionally used in many Islamic religious celebrations. Para‐phenylenediamine (PPD), a major component of black henna tattoo, is a strong sensitizer and common allergen. We report a case of severe connubial allergic contact dermatitis after black henna heterotransfer in a girl.  相似文献   
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