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   10611篇
  免费   827篇
  国内免费   118篇
耳鼻咽喉   74篇
儿科学   463篇
妇产科学   314篇
基础医学   1491篇
口腔科学   210篇
临床医学   1039篇
内科学   2492篇
皮肤病学   156篇
神经病学   716篇
特种医学   372篇
外科学   1419篇
综合类   201篇
一般理论   10篇
预防医学   677篇
眼科学   271篇
药学   687篇
中国医学   97篇
肿瘤学   867篇
  2023年   57篇
  2022年   109篇
  2021年   232篇
  2020年   133篇
  2019年   237篇
  2018年   256篇
  2017年   195篇
  2016年   198篇
  2015年   249篇
  2014年   320篇
  2013年   429篇
  2012年   671篇
  2011年   674篇
  2010年   384篇
  2009年   371篇
  2008年   635篇
  2007年   612篇
  2006年   631篇
  2005年   596篇
  2004年   531篇
  2003年   454篇
  2002年   413篇
  2001年   394篇
  2000年   400篇
  1999年   317篇
  1998年   133篇
  1997年   106篇
  1996年   106篇
  1995年   89篇
  1994年   64篇
  1993年   78篇
  1992年   181篇
  1991年   149篇
  1990年   139篇
  1989年   153篇
  1988年   132篇
  1987年   124篇
  1986年   117篇
  1985年   96篇
  1984年   65篇
  1983年   51篇
  1982年   41篇
  1981年   32篇
  1980年   29篇
  1979年   35篇
  1978年   20篇
  1977年   23篇
  1976年   16篇
  1975年   12篇
  1974年   14篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
OBJECTIVE: To survey nurses around the world about current practices for peritoneal dialysis (PD) home training programs. DESIGN: Random sampling of nurses to complete a written survey from the International Society for Peritoneal Dialysis Nursing Liaison Committee. Settings: United States, Canada, South America (Brazil, Columbia), The Netherlands, Hong Kong. METHODS: Surveys and responses were sent by fax whenever possible, or by regular mail, or hand carried, or conducted by telephone. Results were stratified by geographic areas as well as by cumulative responses and were expressed as medians with ranges. Kruskal-Wallis was used to evaluate differences in responses. Associations between variables were tested with Pearson correlation. Univariate regression analysis was used to evaluate the impact of variables on peritonitis rates. Variables with p < 0.10 were included in a multivariate analysis. RESULTS: A total of 317 nurses responded: 88 in the United States, 46 in Canada, 58 in South America, 58 in Hong Kong, and 67 in The Netherlands. This represented 37% of all surveys distributed. Respondents had a median of 12 years' experience in nephrology (range 1-35 years), but only 31% had a formal background in adult education. Nearly half received their guidance to patient training from a nurse colleague, 11% were guided by a corporate colleague, and 8% were simply self-taught. Clinics responding had a median of 30 PD patients (range 1-400) and reported they trained a median of 8 patients per year (range 0-86). Reported peritonitis rates were a median 0.46 per year or 1 episode every 26 months. Peritonitis rates, however, were not known by 53% of respondents. Total training time per patient had a very wide range of hours, from 6 to 96. There was no correlation between training time and peritonitis rates among the study respondents (p = 0.38), nor with any other variables. CONCLUSIONS: There is wide variation in practices for PD patient training programs within countries and around the world. Training time did not appear to be related to peritonitis rates. Randomized trials of training practices are needed to determine which approaches produce the best outcomes for patients.  相似文献   
2.
3.
A Leung  L Robson 《Urology》1987,29(1):45-46
A child with myoglobinuria following rhabdomyolysis from child abuse is described. The importance of early recognition and treatment of this condition is emphasized.  相似文献   
4.
We describe a 15-y-old girl with Fechtner-like syndrome, who is the first Chinese reported to have this rare syndrome. She presented with left homonymous hemianopia and neuroimaging revealed haemorrhage in both parietal and occipital lobes. Peripheral blood smear showed macrothrombocytopenia and intracytoplasmic inclusion bodies inside leucocytes. Thrombocytopenia and proteinuria responded to intravenous immunoglobulin and pulsed methylprednisolone. This case illustrates that life-threatening haemorrhage can occur in patients with Fechtner syndrome. Although there was no effective treatment reported in the literature, high dose steroid and immunoglobulin seemed to be useful in our patient. Our patient also had nephritic-nephrotic syndrome with renal insufficiency, which is unusual in adolescent female patients.  相似文献   
5.
We describe a case of aortopulmonary fistula in which the correct diagnosis was made by transthoracic echocardiography. The transesophageal approach, because of severe aortic dilatation, failed to provide the correct diagnosis, underlining the importance of complete transthoracic and transesophageal studies in the evaluation of aortic aneurysms.  相似文献   
6.
7.
8.
The current report focuses on two patients of the same age who presented similar appearances on initial anteroposterior chest images. Follow-up images showed superoanterior and superoposterior mediastinal lesions. The first patient with noninvasive cystic thymoma was suspected before surgery, while the pathologic diagnosis was intrathoracic phrenic nerve schwannoma. The second patient was with an asymmetric, dumbbell-shaped paravertebral tumor over T3 and T4 on the left side. The preoperative…  相似文献   
9.
Akathisia as a side-effect of metoclopramide has received increasing attention in consultation-liaison psychiatry in recent years. A case of metoclopramide-induced akathisia resulting in a suicide attempt is reported in order to highlight the suffering of such patients and the factors that lead to misdiagnosis.  相似文献   
10.
Splenic irradiation has been used in patients with HIV-related thrombocytopenia. This retrospective review deals with four patients treated with low dose splenic irradiation. All patients had an increase in platelet count and tolerated the treatment without side effects. However, the treatment response lasted for several months only.  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