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   1201篇
  免费   61篇
  国内免费   6篇
耳鼻咽喉   31篇
儿科学   59篇
妇产科学   57篇
基础医学   107篇
口腔科学   36篇
临床医学   89篇
内科学   257篇
皮肤病学   57篇
神经病学   87篇
特种医学   48篇
外科学   124篇
综合类   10篇
预防医学   54篇
眼科学   106篇
药学   90篇
中国医学   3篇
肿瘤学   53篇
  2024年   1篇
  2023年   11篇
  2022年   19篇
  2021年   38篇
  2020年   39篇
  2019年   35篇
  2018年   31篇
  2017年   30篇
  2016年   47篇
  2015年   40篇
  2014年   51篇
  2013年   79篇
  2012年   92篇
  2011年   85篇
  2010年   59篇
  2009年   56篇
  2008年   114篇
  2007年   99篇
  2006年   84篇
  2005年   77篇
  2004年   83篇
  2003年   45篇
  2002年   31篇
  2001年   11篇
  2000年   2篇
  1999年   3篇
  1998年   1篇
  1997年   2篇
  1996年   1篇
  1988年   1篇
  1983年   1篇
排序方式: 共有1268条查询结果,搜索用时 15 毫秒
61.

Purpose  

Resveratrol, a polyphenolic compound mainly abundant in red wines, has beneficial cardiovascular effects on various pathological conditions. However, at present, the effect of resveratrol on health promotion remains unclear. Therefore, in this study, we assessed whether long-term resveratrol supplementation changes endothelial function, vascular contractility, nitric oxide and superoxide production in healthy male and female rats.  相似文献   
62.
We prospectively evaluated 59 eyes following uneventful phacoemulsification and intraocular lens implantation with optic coherence tomography at one and seven postoperative days (POD). Acute vitreomacular traction was observed in two eyes (3.3%) at the first POD. Spontaneous resolution occurred in both eyes within one week. The temporary visual loss associated with acute vitreomacular traction syndrome may go unnoticed as visual acuity rapidly improves.  相似文献   
63.
Women with extremely large and ptotic breasts have many complaints and difficulties during daily life. Conventional reduction mammaplasty techniques are not convenient because the presence of excess tissue beneath and over a long pedicle may cause nipple-areola complex necrosis. These patients mostly have systemic health problems so they benefit from a shorter operative procedure. The amputation method is an option providing rapid surgical operation time and little blood loss but it may lead to a flat, unaesthetic breast with poor projection. In this paper we present an alternative amputation with the use of a backfolded dermoglandular flap and free nipple graft. The inferior pole is amputated. The deepithelialized breast tissue is left on the superior pedicle extending below the 7-cm vertical limb mark. This deepithelialized tissue is tucked to give more central mound projection. The aesthetic outcomes, such as well-rounded breasts with good projection and a hidden scar at the submammary sulcus, have led us to perform this technique, which was first described by the Mansteins in 1997.  相似文献   
64.
Various techniques and different types of incisions have been used for breast augmentation, the choice of which depends on regional and physical characteristics of the patient, an indication for the operation, and the decision of the patient and the operator. The periareolar approach is ideal for cases of developmental hypomastia that have adequate skin and glandular tonus and with minimum ptosis. The disadvantages of this method are a hypopigmented scar on the pigmented areola and a decrease in sensitivity of the nipple-areola. This article presents the experiences of the Department of Plastic and Reconstructive Surgery of the University of Istanbul, Faculty of Medicine between 1995 and 1998, on medial periareolar submuscular augmentation approaches to five cases. During this follow-up period we had no major complications.  相似文献   
65.
66.
Stiff skin syndrome (SSS) is a disease similar to scleroderma with an unknown etiology. Stone-hard areas of skin are observed from birth or in early childhood. In this article we describe a 15-year-old girl with skin hardening and limitation of movement. We diagnosed the case as SSS, of which we have not encountered a similar report in the Turkish literature.  相似文献   
67.
Background We aimed to study the correlations of several outcome measures in bipolar patients with the clinical features of interepisode period. Methods Bipolar patients who were diagnosed according to DSM-III-R or IV were contacted and asked for a further evaluation. Interepisode bipolar patients (n = 100) were interviewed with the Schedule for Affective Disorders and Schizophrenia (SADS). In addition the Brief Disability Questionnaire (BDQ), the Quality of Life Enjoyment and Satisfaction Questionnaire (Q-LES-Q) and the Global Assessment Scale (GAS) were administered to assess outcome. They were also asked to check the List of Life Events (LLE) for the last six months. Results Our results can be summarised as follows: (1) quality of life was predicted by current subthreshold depressive symptoms; (2) the number of previous depressive episodes, current subthreshold depressive and manic symptoms predicted disability; (3) the number of previous depressive episodes and the duration of hospitalisation as well as current subthreshold depressive and manic symptoms predicted overall functioning; (4) the number and distress level of life events were correlated with suicidal symptoms. Conclusions Our findings suggest that outcome measures were correlated with subsyndromal disorder, the number of previous depressive episodes and the duration of hospitalisation. Accepted: 2 October 2001  相似文献   
68.
BACKGROUND: There are many studies, mainly conducted in industrialized countries, concerning developmental and behavioral outcomes of preterm children. However, little is known about the outcomes of preterm children from developing countries. METHOD: Forty-three non-handicapped Turkish preterm children, 15 with very low birth weight and 28 with low birth weight at preschool age, as well as 36 term controls were compared on rates of developmental, emotional and behavioral impairments. Data were collected by review of hospital records and application of various questionnaires and inventories to both children and their parents. RESULTS: Preterm children had significant delays in general development and significant rise in somatic complaints with unknown medical etiologies. The very low birth weight group also had significant delay in language and cognitive development. Parents of the preterm children displayed significantly higher rates of democratic attitudes. Developmental outcome was significantly associated with birth weight and authoritarian parental attitudes where behavioral outcome was significantly influenced by birth weight. CONCLUSION: Presence of developmental delay is in accordance with existing data on the outcomes of preterm children from industrialized countries. An isolated increase in somatic complaints is an uncommon finding which might also be related to cultural factors.  相似文献   
69.
70.
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