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   443篇
  免费   16篇
  国内免费   1篇
儿科学   32篇
妇产科学   9篇
基础医学   86篇
口腔科学   2篇
临床医学   26篇
内科学   133篇
皮肤病学   5篇
神经病学   11篇
特种医学   1篇
外科学   47篇
综合类   3篇
预防医学   77篇
眼科学   8篇
药学   7篇
肿瘤学   13篇
  2024年   1篇
  2023年   4篇
  2022年   6篇
  2021年   14篇
  2020年   5篇
  2019年   16篇
  2018年   17篇
  2017年   10篇
  2016年   14篇
  2015年   11篇
  2014年   21篇
  2013年   27篇
  2012年   36篇
  2011年   32篇
  2010年   21篇
  2009年   11篇
  2008年   25篇
  2007年   25篇
  2006年   30篇
  2005年   19篇
  2004年   16篇
  2003年   11篇
  2002年   12篇
  2001年   13篇
  2000年   12篇
  1999年   9篇
  1998年   2篇
  1997年   2篇
  1996年   4篇
  1995年   1篇
  1994年   1篇
  1991年   3篇
  1990年   2篇
  1989年   2篇
  1988年   6篇
  1987年   1篇
  1986年   1篇
  1984年   2篇
  1979年   2篇
  1977年   1篇
  1976年   2篇
  1975年   2篇
  1974年   3篇
  1973年   3篇
  1972年   1篇
  1970年   1篇
排序方式: 共有460条查询结果,搜索用时 15 毫秒
41.
42.
43.
Our study concerns 244 new cases of leprosy diagnosed in the Bamako district in 1994. 154/244 patients could be contacted and were examined in the Leprosy Department of the Marchoux Institute in Bamako. Results showed that the presence of leprosy induced physical disabilities was associated with male gender (59%), advanced age (68%) and multibacillary disease (68%). Disabilities were also more frequent among patients having a rural or manual occupation at the time of screening or afterwards. There was a significant increase (p < 0.001) in the prevalence of disabilities when comparing patients at the time of diagnosis (29%) and thereafter (48%). This means that in 40% of disability cases, lesions developed during or after the treatment. Disabilities were predominantly observed in hands (33%) and feet (29%) with more frequent lesions in lateral popliteal, superior ulnar and posterior tibial nerves. Our results seem to demonstrate the inadequacy of preventive measures and management. This stresses the need for adequate prevention and therapy of leprosy induced disabilities in order to obtain proper eradication of leprosy induced health problems.  相似文献   
44.
The kelch 13 (K13) propeller gene is associated with artemisinin resistance. In a previous work, there were no mutations found in 138 Plasmodium falciparum isolates collected in 2012 and 2013 from patients residing in Dakar, Senegal (M. Torrentino-Madamet et al., Malar J 13:472, 2014, http://dx.doi.org/10.1186/1475-2875-13-472). However, the N554H, Q613H, and V637I mutations were identified in the propeller region of K13 in 92 (5.5%) isolates in 2013 and 2014. There were five polymorphisms identified in the Plasmodium/Apicomplexa-specific domain (K123R, N137S, N142NN/NNN, T149S, and K189T/N).  相似文献   
45.
The aim of this study was to identify correlates associated with condom use at last intercourse between sex workers (SW) and their boyfriends (BF). The sample was derived as a convenience sample recruited through existing HIV prevention organizations in Benin, Guinea and Senegal. The Theory of Planned Behavior served as the conceptual framework. A total of 406 individuals (220 SW and 186 BF) participated in the study. Socio-demographic, behavioral and psychological variables were collected through a face-to-face administered questionnaire. Condom use at last intercourse was significantly associated with intention and perceived control among SW as well as their BF. With respect to intention, perceived control, attitude and moral norm explained 82 and 74% of intention of SW and BF, respectively. These results suggest that promoting condom use among SW and BF should be based primarily on the development of personal ability to overcome obstacles to condom use.  相似文献   
46.
A prospective study was carried out in two tertiary hospitals in Dakar to determine the main causes of sputum acid-fast bacillus (AFB) smear-negative pneumonia in HIV-infected patients. All clinical and microbiological records were reviewed by experts. Seventy patients were finally enrolled. Most of them were hospitalized at an advanced stage of AIDS. The median CD4 cell count was 62/mm(3) and the median body mass index (BMC) was 18 kg/m(2). Thirty-one patients (44 %) were known as seropositive for HIV infection prior to admission. Radiological opacities were localized in 70 % of patients and diffuse in 21 %. Fiberoptic bronchoscopy was performed in 50 patients (71 %). A definite or probable diagnosis was obtained in 55 patients (79 %). Bacterial pneumonia (usually due to Enterobacteriaceae and Pseudomonas aeruginosa), tuberculosis, Pneumocystis pneumoniae and other causes (Kaposi's sarcoma, atypical mycobacteria) were diagnosed in 67 %, 24 %, 5 %, and 13 % of these patients respectively. In conclusion, pneumonia of bacterial origin and tuberculosis can be incriminated in the majority of cases of AFB negative pneumonia observed in HIV patients in Dakar.  相似文献   
47.
48.

Background and methodology

The delay in the diagnosis of HIV infection is a major obstacle to optimal care for this disease. To deal with this problem, we conducted this study among newly diagnosed HIV patients hospitalized in the Fann University Hospital Infectious Diseases Clinic in Dakar. The epidemiological, clinical, biological and outcome aspects are described and patient history reviewed. A qualitative socio-anthropological study was made to understand and describe the logic of the decision processes in the patient's search for treatment.

Results

One hundred patients were included, with a mean age of 39.5 ± 11.1 years and a sex-ratio: 1.08. The transmission was mainly heterosexual (90%), and chronic diarrhea (64%) and/or chronic cough (66%) were the principal symptoms leading to diagnosis. The mean delay before diagnosis was 5 ± 4.27 months. The major opportunistic diseases were tuberculosis (44 cases) and infectious diarrhea (23 cases). Most patients were diagnosed at the AIDS stage (97%) and the death rate was 30% among hospitalized patients after admission. Sixty-eight percent of patients had consulted at least three times, generally a “traditional practitioner”, at first and 43% had been hospitalized at least once. The qualitative investigation revealed that the “representation” or the “feeling of severity” of the disease were the principal justifications for consulting the “traditional practitioner” or the physician, respectively.

Conclusion

Better information for health workers and global population is necessary for an earlier diagnosis of HIV infection in Dakar.  相似文献   
49.
There is few published series dealing on the long-term outcome of the adult-onset craniopharyngiomas. We report the long term clinical, tomodensitometric and MRI data outcome of 35 (23 woman and 12 men) consecutive adult-onset cured for craniopharyngiomes between 1983 and 2002, and followed-up in Rennes University Hospital. The operation was performed via frontopterional approach in 59% and transphenoïdal approach in 41% of cases. Their age at the time of diagnosis was 44.7 ± 15.1 years (21–74). The average postoperation follow-up was 7.4 ± 7.0 years (0.1–19.1). Recurrence of tumour occurred in 8 patients (25.8%) and a tumor progression in 1 case. The delay of recurrence after initial surgery was 4.1± 1.3 years  (1.4–6.3). Two patients had 5 and 6 years treatment by growth hormone (GH), without tumor recurrence. The observed increase of weight after the surgical cure of craniopharyngiomas concerned 22 patients (63%). The average weight gain was 17.5 ± 14.7 kg (1.5–58). In 7 cases (20%) neuropsychological disorders were noted, of which 2 with lost of professional activity. Three patients died. In conclusion the craniopharyngiomas recurrence is frequent and can appear in very prolonged deadlines after the initial surgery.  相似文献   
50.
Epilepsy is a significant health public problem in Senegal with an estimated prevalence of 8 to 14%. The aim of this study was to determine the clinical and electroencephalographic features of epilepsy in a cohort of Senegalese infants, search for etiological factors and determine the impact of disease on school life. This retrospective study concerned 459 children who attended the neurological outpatients clinic at the Fann hospital, Dakar, Senegal, between July 2003 and December 2006. All were aged under 19 years. Among the 135 children with idiopathic epilepsy, 23.7% had parental consanguinity and 37.77 % familial epilepsy. Rolandic epilepsy and epilepsy with absences were more frequent but several infants with idiopathic epilepsy were not classified. Non-idiopathic epilepsy was noted in 312 children. In this group, estimates of parental consanguinity and familial epilepsy were of 21.79 and 17.94%, respectively. Etiological factors were predominantly pregnancy and birth abnormalities (28.84%) and central nervous system infection (20.19%). Twelve children had febrile seizures. Of patients with idiopathic epilepsy, 65.18% were attending school versus only 9.29 with non-idiopathic epilepsy.  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