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   2269篇
  免费   143篇
  国内免费   4篇
耳鼻咽喉   15篇
儿科学   88篇
妇产科学   106篇
基础医学   337篇
口腔科学   82篇
临床医学   366篇
内科学   363篇
皮肤病学   66篇
神经病学   154篇
特种医学   30篇
外科学   224篇
综合类   27篇
一般理论   4篇
预防医学   265篇
眼科学   19篇
药学   155篇
肿瘤学   115篇
  2021年   27篇
  2020年   25篇
  2019年   47篇
  2018年   49篇
  2017年   51篇
  2016年   48篇
  2015年   36篇
  2014年   54篇
  2013年   125篇
  2012年   104篇
  2011年   118篇
  2010年   76篇
  2009年   78篇
  2008年   122篇
  2007年   155篇
  2006年   133篇
  2005年   136篇
  2004年   115篇
  2003年   123篇
  2002年   111篇
  2001年   22篇
  2000年   30篇
  1999年   26篇
  1998年   28篇
  1997年   32篇
  1996年   25篇
  1995年   24篇
  1994年   16篇
  1993年   22篇
  1992年   26篇
  1991年   24篇
  1990年   17篇
  1989年   29篇
  1988年   17篇
  1987年   25篇
  1986年   14篇
  1985年   33篇
  1984年   15篇
  1983年   11篇
  1982年   17篇
  1981年   14篇
  1980年   13篇
  1979年   14篇
  1978年   15篇
  1977年   18篇
  1976年   17篇
  1975年   17篇
  1974年   17篇
  1973年   12篇
  1971年   11篇
排序方式: 共有2416条查询结果,搜索用时 15 毫秒
31.
16 patients with transfusion-dependent, life-threatening bone marrow failure (14 with severe aplastic anaemia, 1 with systemic lupus erythematosus and 1 with pure red cell aplasia) were treated with cyclosporin-A (Cy-A) after either lack of response to conventional immunosuppression with antithymocyte-globulin/high-dose methylprednisolone for 95 to 1190 days (median 186.5) (group I, 8 patients) or as a primary treatment due to ineligibility for conventional immunosuppression (group II, 8 pat.). Cyclosporin-A was given orally to maintain trough levels of 200 to 300 ng/ml (RIA). In group I, 6 out of 8 patients responded 30 to 480 d (median 53) and are currently alive 627 to 1482 d (median 731) after initiation of Cy-A, respectively. In 3 of the responders Cy-A has been withdrawn, without relapse. In group II, 5 of 8 patients responded 26 to 170 d (median 63) and are currently alive 142 to 697 (median 420) d following initiation of Cy-A, respectively. These data indicate a place for cyclosporin-A in the management of patients with life-threatening bone marrow failure in whom a) immunosuppressive therapy with antithymocyte-globulin and high-dose methylprednisolone had failed and b) who are not candidates for vigorous immunosuppression or bone marrow transplantation, for medical or other reasons.  相似文献   
32.
33.
We measured the levels of biochemical markers of bone formation and bone resorption in hip fracture patients preoperatively and after 6 and 12 months. Bone densitometry was done with quantitative computer tomography (QCT), dual-energy X-ray absorptiometry (DXA) and heel ultrasound. After 6 months, the biochemical markers of bone formation and bone resorption had increased. The levels remained high after 1 year and no change occurred between 6 and 12 months. We found no correlations between biochemical bone markers and bone density/ stiffness on admission and change in bone mineral density (BMD) during the first postoperative year, despite the changes in bone markers and bone density. In our opinion, biochemical bone markers can not be used to predict bone loss in the individual patient after a hip fracture.  相似文献   
34.
This study reports the possibility of accomplishing a survey in an ordinary psychiatric service organization to identify the children and the adolescents in families with a parent with mental illness and to highlight the number of patients in psychiatric treatment with little or virtually no contact with their minor children. The prevalence of patients being parents to minor children was 36% in the total sample consisting of 137 patients, from both inpatient and outpatient services, participating in the survey. Three of four patients were living together with the children. A higher proportion of patients in the outpatient unit were parents to minor children, and more often lived together with them. There were no differences in prevalence of patients with minor children according to sex or diagnostic subgroup. However, female patients more often and patients with a psychosis diagnosis more seldom had the custody of the children. A majority of the patients had communicated with their children about their own situation, showing that psychiatric patients care a lot about the situation of their children, although, according to the patients, the psychiatric services only take an active part in this information in a minority of the cases. The study may be found to be a basis for inspiring structured interventions and treatments programmes, including the minor children of the adult patients seeking psychiatric treatment. Prevention of mental disorders in the oncoming generation is an important issue for all psychiatric professionals, especially in co-operation between adult and child/adolescent psychiatric services.  相似文献   
35.
Objective: The present study reports on the application of a Swedish translation of the audiologist occupational stress questionnaire (AOSQ) on audiologists working in Sweden. The relations between AOSQ scores and perceived effort, perceived rewards, coping strategies at work, demographic variables such as salary, education length, practise length, and practice type were tested. Design: A cross-sectional e-mail survey using the AOSQ, effort-reward imbalance questionnaire, and demographic questions. Study sample: Four-hundred and four Swedish licensed audiologists working with clients. Results: The Swedish AOSQ translation demonstrated high inter-item correlations and high internal consistency. Several stress factors were identified: time spent at work, accountability, leadership at the workplace, paperwork and practice demands, equipment and clinical protocols, own health concerns, and job control. The outcome on the complete AOSQ questionnaire was related to perceived effort, perceived rewards, coping strategies at work, and age. Conclusions: The Swedish AOSQ translation seems to provide a valid measure of occupational stress among audiologists.  相似文献   
36.
Nine patients with unipolar major depression were scanned with MRI twice over a 2-year period, and compared with 12 healthy control subjects. All patients fulfilled criteria for major depressive disorder, recurrent type, at first scanning. Level of depressive psychopathology was assessed by the Hamilton Depression Rating Scale. The participants had to work on a mental arithmetics/working memory task while in the MR scanner. The task consisted of single digits (1 to 9) that were shown to the participant, who had to add the numbers in successive pairs and press a response button when the sum was 10. Neuronal activation was recorded based on the BOLD contrast phenomenon in a functional MRI protocol. The results showed significant increase in activation for the patients in the inferior frontal gyrus and the superior and inferior parietal lobule at the second compared with the first MR scanning session. There were also significant correlations between the HDRS scores and neuronal activation which showed a negative correlation particularly in the inferior frontal and parietal lobe areas, which overlapped with similar areas activated in the healthy control participants. This may indicate normalization of brain activation in depressed patients as a function of time from an illness phase to a remission/recovery state.
Kenneth HugdahlEmail:
  相似文献   
37.
38.
39.
40.
Research on the sex lives of people with severe mental illness (SMI) most often focuses on dysfunction and the side-effects of medication. We wished to determine how people with SMI experience sex and assess satisfaction with it in a broader evaluation of quality of life. Data were gathered using mixed methods, including a reliable psychometric quality of life instrument, and in-depth interviews. Sex life showed the lowest rating of all quality of life domains, with men indicating lower satisfaction in this area than women. Low satisfaction also correlated with lower scores on the total quality of life index. Sexuality and intimate relations were generally experienced as out of reach or something of secondary importance that had to be controlled, according to many of those suffering from SMI. Programs such as patient disorder-specific or partner assisted interventions, to increase the possibility of sustaining a sex life might need to be added to existing recommendations for people with SMI living in a community.  相似文献   
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