全文获取类型
收费全文 | 4101篇 |
免费 | 236篇 |
国内免费 | 7篇 |
专业分类
耳鼻咽喉 | 27篇 |
儿科学 | 304篇 |
妇产科学 | 96篇 |
基础医学 | 500篇 |
口腔科学 | 58篇 |
临床医学 | 276篇 |
内科学 | 650篇 |
皮肤病学 | 57篇 |
神经病学 | 212篇 |
特种医学 | 169篇 |
外科学 | 505篇 |
综合类 | 170篇 |
预防医学 | 452篇 |
眼科学 | 196篇 |
药学 | 302篇 |
中国医学 | 17篇 |
肿瘤学 | 353篇 |
出版年
2023年 | 23篇 |
2022年 | 49篇 |
2021年 | 92篇 |
2020年 | 68篇 |
2019年 | 71篇 |
2018年 | 93篇 |
2017年 | 56篇 |
2016年 | 77篇 |
2015年 | 88篇 |
2014年 | 149篇 |
2013年 | 182篇 |
2012年 | 271篇 |
2011年 | 321篇 |
2010年 | 178篇 |
2009年 | 151篇 |
2008年 | 250篇 |
2007年 | 247篇 |
2006年 | 176篇 |
2005年 | 190篇 |
2004年 | 179篇 |
2003年 | 155篇 |
2002年 | 119篇 |
2001年 | 76篇 |
2000年 | 69篇 |
1999年 | 68篇 |
1998年 | 32篇 |
1997年 | 21篇 |
1996年 | 21篇 |
1995年 | 20篇 |
1994年 | 19篇 |
1993年 | 20篇 |
1992年 | 40篇 |
1991年 | 36篇 |
1990年 | 29篇 |
1989年 | 45篇 |
1988年 | 35篇 |
1987年 | 38篇 |
1986年 | 30篇 |
1985年 | 27篇 |
1984年 | 26篇 |
1983年 | 21篇 |
1982年 | 23篇 |
1979年 | 41篇 |
1978年 | 31篇 |
1974年 | 28篇 |
1973年 | 23篇 |
1971年 | 23篇 |
1970年 | 28篇 |
1969年 | 19篇 |
1966年 | 19篇 |
排序方式: 共有4344条查询结果,搜索用时 312 毫秒
1.
2.
Indira R. Kenkre 《Occupational therapy international》1994,1(1):29-35
India is called the land of villages. In 1951, 82.7% of the Indian population lived in rural areas. Sanskritisation and urbanisation have changed the pattern. It is expected that by the year 2020 this percentage would come down to 55%. These villagers are relocating in urban slums. Thus from the rehabilitation point of view both problems pose challenges. An Indian village community is a political, economic and cultural unit. At the urban slum area at Malwani and in small villages near Juchandra, community rehabilitation programmes were found to be most pragmatic. Community education and preventive occupational therapy are found to be essential steps in rural rehabilitation. Therapists have to work on ‘disability, attitude and beliefs’ and change the behaviour to deal with the grass root (basic) causes. It is felt that for longer sustainment, community-based rehabilitation should originate within the community. Heath professionals must recognise the capabilities of individuals within the support structure of the family and community, while helping individuals to improve the quality of their lives. 相似文献
3.
A morphometric study of endothelial cells of human corneas stored in MK media and warmed at 37 degrees C. 总被引:1,自引:1,他引:0
下载免费PDF全文
![点击此处可从《The British journal of ophthalmology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
No study has yet been done to investigate the changes in endothelial cell size, perimeter, and density that may result from the warming of corneas in MK (McCarey-Kaufman) medium for specular microscopy. In the present investigation eye bank eyes were stored in MK medium at 4 degrees C and rewarmed daily for six days at 37 degrees C before specular photography of the endothelium was performed. These photographs were compared with wet mount preparations stained with trypan blue and alizarin red made from the same corneas and those stored without rewarming for six days. In addition all corneas were qualitatively analysed with the scanning electron microscope (SEM). The data from serial specular photography were insufficient to allow significant conclusions to be drawn about day to day changes in cell morphology. However, analysis of wet mount preparations revealed that cell density and perimeter varied significantly between those corneas rewarmed daily and those held in cold storage for six days. SEM studies showed an intact cell monolayer with cell loss along the folds of corneal endothelium. We therefore concluded that repeated rewarming at 37 degrees C of corneas stored in MK medium at 4 degrees has a deleterious effect on cell morphology and that folds induced by swelling of corneal tissue result in endothelial cell damage with some loss. 相似文献
4.
Gall bladder perforation is a potentially life-threatening condition. Spontaneous perforation is infrequent and rarely seen in the absence of gallstones but gall bladder perforation is an occasional complication of typhoid fever. If such perforations are not treated in time, mortality rates are very high. We report a case of gall bladder perforation complicating typhoid fever following enteric perforation of the ileum necessitating sequential laparotomies during the same admission. 相似文献
5.
6.
Acute Cellular Rejection with CD20-Positive Lymphoid Clusters in Kidney Transplant Patients Following Lymphocyte Depletion 总被引:1,自引:0,他引:1
L. K. Kayler F. G. Lakkis C. Morgan A. Basu D. Blisard H. P. Tan J. McCauley C. Wu R. Shapiro P. S. Randhawa 《American journal of transplantation》2007,7(4):949-954
Lymphoid clusters (LC) containing CD20-positive B cells in kidney allografts undergoing acute cellular rejection (ACR) have been identified in small studies as a prognostic factor for glucocorticoid resistance and graft loss. Allograft biopsies obtained during the first episode of ACR in 120 recipients were evaluated for LC, immunostained with CD20 antibody, and correlated with conventional histopathologic criteria, response to treatment and outcome. LC were found in 71 (59%) of the 120 biopsies. All contained CD20 positive B cells that accounted for 5-90% of the LC leukocyte content. The incidence of LC was highest in the patients who had no lymphoid depletion or had been treated with Thymoglobulin preconditioning (79% vs. 75%, respectively) compared to 37% in patients pretreated with Campath (p = 0.0001). Banff 1a/1b ACR were more frequent in the LC-positive than the LC-negative group (96% vs. 80%, respectively; p = 0.0051). With a posttransplant follow-up of 953 +/- 430 days, no significant differences were detected between LC-postitive and LC-negative groups in time to ACR, steroid resistance, serum creatinine and graft loss. CD20+LC did not portend glucocorticoid resistance or worse short to medium term outcomes. CD20+LC may represent a heterogenous collection in which there may be a small still to be fully defined unfavorable subgroup. 相似文献
7.
A total of 168 strains of Salmonella were isolated in the Command Pathology Laboratory (WC) Delhi Cantt during the year 1990. Out of this, 143 were Salmonella typhi, 17 Salmonella paratyphi A, 7 Salmonella typhimurium and 1 Salmonella manhattan. The commonest phage type and biotype of Salmonella typhi was type E1 and type 1 respectively. The dominant biotype of Salmonella paratyphi A was type I. There was a very high degree of multidrug resistance of most of the strains. But all the strains were sensitive to ciprofloxacin and norfloxacin. 相似文献
8.
9.
Bhabatosh Biswas Dipayan Ghosh Rupak Bhattacharjee Ashis Patra Subir Basuthakur Rajarshi Basu 《Indian Journal of Thoracic and Cardiovascular Surgery》2004,20(2):88-90
Introduction Hydatid cysts of the lung are quite frequent in our country. Some patients have additional cysts in the liver. Though most
of the liver cysts remain asymptomatic for long time, but may be symptomatic with increasing size. Surgical removal is the
treatment of choice for both lung & liver cysts. Aim of the study was to establish suitability of one stage surgery for pulmonary
& hepatic hydatid cysts.
Methods From 1996 through 2003 we operated on 216 pulmonary hydatid cysts, out of which 42 patients had hydatid cysts in the right
lung as well as in the right lobe of liver. Right thoracotomy was done to remove the lung hydatids followed by phrenotomy
to remove the liver cysts.
Results Right thoracotomy was done in 42 patients having hydatid cysts of lung & liver. In 36 patients, cysts were removed, bronchial
leaks were sutured & residual cavities were obliterated. Out of rest 6 patients, having dense adhesions or destruction of
pulmonary parenchyma, 4 had segmentectomy & 2 had lobectomy. Right phrenotomy was then done with radial incision above the
palpated liver cysts. Hydatid cyst was removed from liver. Cavity and remaining pericystic liver tissue was inverted with
sutures. Water seal chest drain & subdiaphragmatic drain were placed. Post operative albendazole was continued for 3 months
in the dose of 10–20 mg/kg with a gap of 2 weeks after each month. Post operative recovery was uneventful in most of the cases.
However, air leak continued for almost 3 weeks in 4 patients & 3 months in one patient. There was no death.
Conclusion Surgical management of pulmonary and hepatic hydatids with one stage right thoracotomy & phrenotomy is a suitable option.
It avoids additional laparotomy and thereby additional cost & hospital stay. Results are quite satisfactory. 相似文献
10.