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   76738篇
  免费   7154篇
  国内免费   2841篇
耳鼻咽喉   180篇
儿科学   782篇
妇产科学   426篇
基础医学   3028篇
口腔科学   578篇
临床医学   6595篇
内科学   9425篇
皮肤病学   1176篇
神经病学   3091篇
特种医学   719篇
外国民族医学   7篇
外科学   2207篇
综合类   10162篇
现状与发展   6篇
一般理论   7篇
预防医学   5867篇
眼科学   875篇
药学   34073篇
  35篇
中国医学   3435篇
肿瘤学   4059篇
  2024年   263篇
  2023年   1355篇
  2022年   2019篇
  2021年   2834篇
  2020年   2877篇
  2019年   3059篇
  2018年   3065篇
  2017年   3260篇
  2016年   2944篇
  2015年   2887篇
  2014年   5001篇
  2013年   8956篇
  2012年   4877篇
  2011年   5041篇
  2010年   4105篇
  2009年   3606篇
  2008年   3396篇
  2007年   3475篇
  2006年   3106篇
  2005年   2786篇
  2004年   2330篇
  2003年   2118篇
  2002年   1675篇
  2001年   1621篇
  2000年   1288篇
  1999年   1079篇
  1998年   926篇
  1997年   859篇
  1996年   686篇
  1995年   644篇
  1994年   555篇
  1993年   476篇
  1992年   536篇
  1991年   456篇
  1990年   352篇
  1989年   293篇
  1988年   283篇
  1987年   265篇
  1986年   214篇
  1985年   232篇
  1984年   177篇
  1983年   134篇
  1982年   115篇
  1981年   95篇
  1980年   64篇
  1979年   58篇
  1978年   71篇
  1977年   48篇
  1976年   53篇
  1975年   49篇
排序方式: 共有10000条查询结果,搜索用时 11 毫秒
21.
Background Previous reports have suggested that South Asian and white UK populations have different prevalences of intellectual disability (ID), related psychological morbidity and service use. The aim of the present study was to compare these rates among South Asian and white adults in Leicestershire, UK. Method This cross‐sectional study is comprised of two parts. The analysis of prevalence is based on data from all South Asian and white adults known to the Leicestershire Learning Disabilities Register in 1991, with population denominators being drawn from the 1991 census. The other analyses use data collected from the most recent semi‐structured home interviews, carried out between 1987 and 1998, with 206 South Asian and 2334 white adults. Results The prevalence of ID in adults in Leicestershire is 3.20 per 1000 in South Asians and 3.62 per 1000 in whites. Among adults with ID, South Asians have similar prevalences of disabilities to whites and significantly lower skill levels. South Asians show similar levels of psychological morbidity, but make significantly lower use than whites of psychiatric services, residential care and respite care. South Asians use community services as extensively as whites, but feel that they have a substantially greater unmet need, especially with regard to social services. Conclusion South Asian and white populations have similar prevalences of ID and related psychological morbidity. Culturally appropriate services for South Asian adults may need to focus on skill development and community care.  相似文献   
22.
大剂量地塞米松及SOD在实验性脑损伤中的治疗作用   总被引:1,自引:0,他引:1  
大剂量地塞米松和SOD是外伤性脑继发性损害药物治疗的新方案。本实验在豚鼠局灶性脑损伤模型上试用该两种药物,通过脑含水量、灶周伊文斯兰渗出、血CK、Ca和LDH含室及光镜和电镜病理检查等指标。  相似文献   
23.
24.
The authors describe the successful use of an adjunctive group psychotherapy for substance-abusing patients with major psychiatric disorders (bipolar, schizophrenia, schizoaffective, psychotic depression, and atypical psychosis). The group utilizes a psychoeducational approach that focuses on substance abuse causes and consequences, principles of recovery, and relapse prevention strategies. Eight patients with prolonged histories of abuse of cocaine, alcohol, marijuana, or other drugs were enrolled in this weekly group treatment at a community mental health center drug treatment program, while continuing in treatment with their current case manager or primary therapist. Six of the eight patients achieved periods of stable abstinence, documented by self-report, urine toxicology screens, continued group attendance, and improved social functioning. Case examples are utilized to illustrate the group process.  相似文献   
25.
Abstract: Twenty-six part-time students from a variety of professional backgrounds are enrolled in the first year of a Graduate Diploma in Social Science (Drug Dependence) at the Phillip Institute of Technology in Victoria. The course is conducted under the auspices of the School of Social Work and commenced in 1984. It is argued that the graduates from this unique course could play a key role in providing personnel to fill positions in the areas of clinical work, staff development, drug education, programme development and management and research.  相似文献   
26.
The clinical and electrophysiological features of a truncal myoclonus in a 55-year-old man are described. The electromyographic characteristics point toward propriospinal myoclonus. It is suggested that a myoclonic generator was released after use of ciprofloxacin, by antagonising the gamma-aminobutyric acid metabolism.  相似文献   
27.
The authors report a case of erythema multiforme in a 32-year-old woman who was also taking oral terbinafine for an onychomycosis. The patient data analysis showed serological positivity for cytomegalovirus (IgM and IgG) and hepatitis C virus and serological titre of antinuclear antibody was elevated. After a brief review of the literature the authors propose the possibility of virus-drug interaction as a model of adverse drug reactions.  相似文献   
28.
Summary Five compounds which were identified as potential new anticancer drugs inin vitro screening with the human tumor colony forming assay were selected for further evaluation usingin vitro andin vivo models of human ovarian cancer. Three of five compounds were found to inhibitin vitro colony formation of ovarian cancer cell lines derived from both untreated and combination chemotherapy refractory patients. One compound was also found to prolong survival in a human ovarian carcinoma xenograft model system. This compound, chloroquinoxaline sulfonamide, was selected for development and has shown preliminary indication of activity in phase I clinical testing.  相似文献   
29.
A community-based case-finding sample of 1824 narcotic abusers in Stockholm County was used to standardize a set of rating scales in order to reflect levels of personality organization (PO), in the spirit of Kernberg's theory. PO is assumed to be a function of the ego's capacity to endure inner and outer stress, which manifests itself in the frequency and depth of regressions and the rate of recovery from them. The principles of a method, Rating Ego Balance, for charting the person's characteristic pattern of regression are presented, and its psychometric properties are described on the basis of item response theory. The scales have satisfactory reliabilities and maximal discrimination at subneurotic levels of PO. They show strong construct validity in relation to Kernberg's theory.  相似文献   
30.
We reported a case of photoleukomelanodermatitis (Kobori) type drug eruption due to afloqualone (Arofuto®). The patient was given afloqualone and imipramine hydrochloride (Chrytemin®) for cervical spondylosis from November of 1990. Edematous erythema with slight itching appeared on the sun-exposed areas in December of 1990. As drug eruption was suspected, drugs were ceased, and the cutaneous lesions almost disappeared but pigmentations and depigmentations developed in spots in sun-exposed areas in March of 1991. Photopatch and oral challenge tests were positive.  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