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   5584篇
  免费   339篇
  国内免费   52篇
耳鼻咽喉   37篇
儿科学   136篇
妇产科学   43篇
基础医学   632篇
口腔科学   99篇
临床医学   418篇
内科学   1492篇
皮肤病学   158篇
神经病学   345篇
特种医学   180篇
外科学   1097篇
综合类   22篇
预防医学   115篇
眼科学   106篇
药学   352篇
中国医学   8篇
肿瘤学   735篇
  2024年   6篇
  2023年   59篇
  2022年   97篇
  2021年   244篇
  2020年   128篇
  2019年   141篇
  2018年   233篇
  2017年   166篇
  2016年   193篇
  2015年   191篇
  2014年   197篇
  2013年   261篇
  2012年   390篇
  2011年   457篇
  2010年   236篇
  2009年   192篇
  2008年   292篇
  2007年   322篇
  2006年   320篇
  2005年   288篇
  2004年   308篇
  2003年   308篇
  2002年   268篇
  2001年   50篇
  2000年   46篇
  1999年   55篇
  1998年   60篇
  1997年   44篇
  1996年   46篇
  1995年   41篇
  1994年   38篇
  1993年   34篇
  1992年   25篇
  1991年   32篇
  1990年   14篇
  1989年   27篇
  1988年   17篇
  1987年   14篇
  1986年   14篇
  1985年   9篇
  1984年   9篇
  1983年   11篇
  1982年   10篇
  1981年   13篇
  1980年   11篇
  1979年   11篇
  1978年   8篇
  1976年   7篇
  1975年   5篇
  1967年   4篇
排序方式: 共有5975条查询结果,搜索用时 78 毫秒
81.

Objective

To determine the influence of the Kuchi-kara Taberu (KT) index on rehabilitation outcomes during hospitalized convalescent rehabilitation.

Design

A historical controlled study.

Setting and Participants

A rehabilitation hospital.

Participants

Patients who were admitted to a convalescent rehabilitation ward from June 2014 to May 2017.

Measures

Patients’ background characteristics included age, sex, nutritional status, activities of daily living (ADL) assessed using the Functional Impedance Measure (FIM), dysphagia assessed using the Functional Oral Intake Scale (FOIS), and reasons for rehabilitation. The following values before (control group) and after initiation of the KT index intervention period (intervention group) were compared: gain of FIM, length of stay, accumulated rehabilitation time, discharge destination, gain of FOIS, gain of body weight (BW), and nutritional intake (energy and protein).

Results

Mean age was 76.4 ± 12.3 years (n = 233). There were no significant differences in the baseline characteristics of the patients at admission between the control and intervention groups, except for reason of rehabilitation. The intervention group demonstrated statistically higher values for the total (P = .004) and motor FIM gain (P = .003), total (P = .018) and motor FIM efficiency (P = .016), and FOIS gain (P < .001), compared with values in the control group. The proportion of patients returning home was statistically more frequent in the intervention group compared with that in the control group (73.4% vs 85.5%, odds ratio 2.135, 95% confidence interval [CI] 1.108-4.113, P = .022). Multivariate analyses indicated that intervention using the KT index was a significant independent factor for increased FIM gain (β coefficient = 0.163, 95% CI 1.379-8.329, P = .006) and returning home (adjusted odds ratio 2.570, 95% CI 1.154-5.724, P = .021).

Conclusions/Implications

A rehabilitation program using the KT index may lead to improvement of inpatient outcomes in post-acute care. Further prospective research is warranted to confirm the efficacy of this program.  相似文献   
82.
83.
In this paper, we report two rare cases of foreign body oral injuries caused by forks inserted tightly into both sides of the lingual interdental spaces between the mandibular deciduous canines and first deciduous molars (FDMs). These pediatric cases of foreign body insertion caused not only soft tissue injuries but also the potential luxation of affected deciduous teeth, i.e., the FDMs in the present cases, during the removal of the object by force.  相似文献   
84.
Abstract

Objective: Core beliefs about negative-self are beliefs about self-deficiencies in basic aspects of human adaptation. Meanwhile, neuroticism is a personality trait characterised by negative emotionality, i.e., a tendency to react to stress with negative emotions. The present study tested the hypothesis that core beliefs about negative-self are implicated in neuroticism.

Methods: The subjects were 309 Japanese healthy volunteers. Core beliefs about negative-self were evaluated by the Brief Core Schema Scales, and neuroticism was evaluated by the NEO Personality Inventory-Revised.

Results: In both multiple regression analysis and structural equation modelling, higher neuroticism was strongly predicted by higher levels of core beliefs about negative-self.

Limitations: The present study cannot determine the causal relationship between core beliefs about negative-self and neuroticism, because of its cross sectional design.

Conclusions: The present study suggests that core beliefs about negative-self are deeply implicated in neuroticism.
  • Key Points
  • Implication of core beliefs about negative-self in neuroticism was examined.

  • Neuroticism was predicted by higher levels of these core beliefs.

  • These core beliefs may be involved in negative emotionality of neuroticism.

  相似文献   
85.
Zirconia‐based dental restorations are becoming used more commonly. However, limited attention has been given to the difficulties experienced, concerning cutting, in removing the restorations when needed. The aim of the present study was to compare the cutting efficiency of diamond burs, operated using an electric high‐speed dental handpiece, on zirconia (Zir) with those on lithium disilicate glass–ceramic (LD) and leucite glass–ceramic (L). In addition, evaluation of the cutting efficiency of diamond burs on Zir of different thicknesses was performed. Specimens of Zir were prepared with thicknesses of 0.5, 1.0, 2.0, and 4.0 mm, and specimens of LD and L were prepared with a thickness of 1.0 mm. Cutting tests were performed using diamond burs with super coarse (SC) and coarse (C) grains. The handpiece was operated at 150,000 rpm with a cutting force of 0.9 N. The results demonstrated that cutting of Zir took about 1.5‐ and 7‐fold longer than cutting of LD and L, respectively. The SC grains showed significantly higher cutting efficiency on Zir than the C grains. However, when the thickness of Zir increased, the cutting depth was significantly decreased. As it is suggested that cutting of zirconia is time consuming, this should be taken into consideration in advance when working with zirconia restorations.  相似文献   
86.
87.
88.
89.
90.
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