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   474篇
  免费   26篇
  国内免费   4篇
耳鼻咽喉   4篇
儿科学   6篇
妇产科学   10篇
基础医学   52篇
口腔科学   2篇
临床医学   41篇
内科学   114篇
皮肤病学   10篇
神经病学   33篇
特种医学   12篇
外科学   91篇
综合类   12篇
预防医学   47篇
眼科学   2篇
药学   48篇
中国医学   12篇
肿瘤学   8篇
  2024年   1篇
  2023年   2篇
  2022年   21篇
  2021年   29篇
  2020年   22篇
  2019年   19篇
  2018年   17篇
  2017年   12篇
  2016年   21篇
  2015年   13篇
  2014年   21篇
  2013年   18篇
  2012年   36篇
  2011年   22篇
  2010年   15篇
  2009年   14篇
  2008年   20篇
  2007年   18篇
  2006年   35篇
  2005年   21篇
  2004年   19篇
  2003年   20篇
  2002年   7篇
  2001年   8篇
  2000年   15篇
  1999年   10篇
  1998年   4篇
  1997年   3篇
  1996年   5篇
  1995年   4篇
  1994年   2篇
  1993年   1篇
  1992年   3篇
  1991年   4篇
  1990年   2篇
  1989年   2篇
  1988年   1篇
  1987年   4篇
  1986年   1篇
  1985年   1篇
  1984年   1篇
  1983年   1篇
  1979年   2篇
  1976年   1篇
  1975年   1篇
  1973年   1篇
  1972年   1篇
  1968年   1篇
  1965年   1篇
  1933年   1篇
排序方式: 共有504条查询结果,搜索用时 0 毫秒
51.
52.
Cotard's syndrome is a rare syndrome, characterized by the presence of nihilistic delusions. The syndrome is typically related to depression and is mostly found in middle-aged or older people. A few cases have been reported in young people with 90% of these being females. We present a case of a young pregnant woman suffering from Cotard's syndrome. This is the first report of this syndrome in a pregnant woman. The case was diagnosed late, due to lack of awareness of psychiatric problems in primary care physicians resulting in undue suffering, loss of precious time and resources for the patient. Besides highlighting the rare combination of pregnancy and Cotard's syndrome this report delineates the difficulties faced by patients with such symptoms in a low resource setting.  相似文献   
53.
Graefe's Archive for Clinical and Experimental Ophthalmology - Ophthalmic trauma is a leading cause of preventable monocular blindness worldwide. The prevalence of ophthalmic trauma varies...  相似文献   
54.
55.
56.

Objectives

To compare intravenous paracetamol and intramuscular tramadol as labor analgesics.

Methods

This prospective-randomized study conducted in 200 primigravidae in active labor, distributed into two groups of 100 women each with one receiving intravenous 1,000 mg Paracetamol and other 100 mg intramuscular tramadol. Pain intensity is recorded by McGills scale before, one and 3 h after drug administration. Perinatal outcome is recorded.

Results

No difference in pain intensity is seen before drug administration. After 1 h of drug administration, in paracetamol group, 4 % women had horrible pain, and 29 % had distressing pain, while in tramadol group, 30 % women had horrible pain, and 60 % had distressing pain. After 3 h of drug administration, in paracetamol group, 26 % had distressing pain, while in tramadol group, 51 % women had horrible pain, and 35 % had distressing pain. Labor duration in paracetamol and tramadol group was 4.3 and 5.9 h, respectively. In paracetamol group, nausea is seen in 2.2 % and vomiting in 1.1 %, while in tramadol group, nausea is seen in 6.4 % and vomiting in 4.3 %.

Conclusions

Intravenous paracetamol is more effective labor analgesic with fewer maternal adverse effects and shortens labor as compared to intramuscular tramadol.
  相似文献   
57.
Yoo HJ  Kim M  Ha JH  Chung A  Sim ME  Kim SJ  Lyoo IK 《Psychopathology》2006,39(1):25-31
BACKGROUND: The objective of this study was to evaluate the relationship between symptoms of attention deficit hyperactivity disorder (ADHD) and biogenetic temperament, as assessed by the Junior Temperament and Character Inventory (JTCI) in Korean elementary school children. SAMPLING AND METHODS: Five hundred and sixteen elementary school students (254 boys and 262 girls; age range 9-14 years, mean age 11.0 +/- 1.0 years) were studied. The Junior Temperament and Character Inventory, both the self-rating and parent rating scales, the DuPaul ADHD rating scale (ARS-IV) for parents and teachers and the Child Behavior Checklist have been completed by study subjects. Children with high ARS-IV scores (the upper 10th percentile, n = 52) were defined to have ADHD. Fifty-two age- and sex-matched non-ADHD control subjects were selected randomly from a pool of 464 subjects. RESULTS: Inattention and hyperactivity/impulsivity symptoms correlated positively with Novelty Seeking in both children and parent ratings. These symptoms correlated negatively with Persistence, Self-Directedness and Cooperativeness. Novelty Seeking also had significant correlations with attention problems, delinquent behavior, aggressive behavior, externalizing problems and social problems in the Child Behavior Checklist. The ADHD group (n = 52) had higher scores of Novelty Seeking and lower scores of Self-Directedness and Cooperativeness, compared with the control group. CONCLUSIONS: There were significant correlations between ADHD symptoms and Novelty Seeking. Current findings suggest that Novelty Seeking and ADHD share biogenetic backgrounds.  相似文献   
58.
Hydatid cysts of liver and portal hypertension   总被引:1,自引:0,他引:1  
Two cases of portal hypertension due to hydatid cysts of the liver are reported. In one of the patients, symptoms were secondary to obstruction of inferior vena cava and hepatic outflow tract. The other patient was operated on with a diagnosis of extrahepatic presinusoidal portal hypertension caused by extrinsic compression of the liver by an hydatid cyst. Although hydatidosis is a benign disease, it can produce serious complications as in these reported cases. Therefore hydatidosis should be remembered amongst the causes of portal hypertension in countries where the disease is endemic.  相似文献   
59.
60.
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