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   940篇
  免费   54篇
  国内免费   2篇
耳鼻咽喉   67篇
儿科学   36篇
妇产科学   9篇
基础医学   94篇
口腔科学   8篇
临床医学   91篇
内科学   279篇
皮肤病学   33篇
神经病学   74篇
特种医学   42篇
外科学   89篇
综合类   7篇
预防医学   53篇
眼科学   14篇
药学   47篇
中国医学   1篇
肿瘤学   52篇
  2022年   11篇
  2021年   31篇
  2020年   5篇
  2019年   22篇
  2018年   31篇
  2017年   13篇
  2016年   18篇
  2015年   12篇
  2014年   25篇
  2013年   33篇
  2012年   48篇
  2011年   48篇
  2010年   36篇
  2009年   23篇
  2008年   38篇
  2007年   42篇
  2006年   45篇
  2005年   50篇
  2004年   29篇
  2003年   29篇
  2002年   36篇
  2001年   32篇
  2000年   28篇
  1999年   34篇
  1998年   15篇
  1997年   4篇
  1996年   4篇
  1995年   7篇
  1994年   6篇
  1993年   4篇
  1992年   26篇
  1991年   22篇
  1990年   20篇
  1989年   21篇
  1988年   17篇
  1987年   11篇
  1986年   22篇
  1985年   6篇
  1984年   11篇
  1983年   7篇
  1981年   5篇
  1980年   7篇
  1979年   11篇
  1977年   7篇
  1976年   9篇
  1975年   3篇
  1974年   5篇
  1973年   3篇
  1972年   3篇
  1967年   3篇
排序方式: 共有996条查询结果,搜索用时 15 毫秒
41.
Bilateral hyperplasia of the coronoid processes of the mandible is not frequent and concerns most always males between the ages of 14 and 16. The restricted opening movement is caused by impingement of the process on the medial and anterior surfaces of the zygomatic arch. The diagnostic is made by a good radiography. The treatment is surgery by intraoral approach. The coronoid processes are removed on the two sides with postoperative physiotherapy. The results are good and permanent.  相似文献   
42.
A study of iron deficiency was carried out in two districts in Paris among 207 children aged 10 months recruited from two well-baby out-patient clinics. The main results are as follows: 12% of children were anemic, ferritin was low in 21% and 40% had a borderline deficiency, as shown by a decrease in siderophilin saturation. The average daily milk intake was greater among the immigrants, but this group, being mainly fed whole cow milk with no iron supplementation, had a lower iron intake overall. A positive correlation was found between the percentage of ingested iron-supplemented formulas and the mean corpuscular volume or serum iron levels. Iron deficiency was more frequent in children born to multiparous mothers and in the absence of any iron supplement during pregnancy. Weight gain was inversely correlated to ferritin levels, suggesting a major role of fast growth on iron metabolism.  相似文献   
43.
STUDY AIM: Assessment of laparoscopic adrenalectomy in the management of operable non-small cell lung cancer (NSCLC) associated with solitary and synchronous adrenal mass. PATIENTS AND METHODS: In a retrospective study, we reviewed 3 patients with operable NSCLC proved by pulmonary biopsy and an isolated synchronous adrenal mass shown by abdominal CT scan. We first performed a laparoscopic adrenalectomy followed by pulmonary resection. RESULTS: All patients had a laparoscopic adrenalectomy without any conversion or treatment-related death. Hospitalization stay ranged from 5 to 6 days. A left pneumonectomy has been performed immediately after this first hospitalization in 2 cases and after a first cycle of chemotherapy in the third case. Pathologic examination showed a NSCLC adrenal metastasis in 2 cases and an adrenocortical adenoma in the last case. During the follow-up 2 patients died of other distant metastasis and a mediastinal lymph node recurrence has been diagnosed in the third patient, actually treated by a second line chemotherapy. CONCLUSION: Despite those bad results that concern patients T3 M+ in 2 cases, laparoscopic adrenalectomy seems to be very interesting in selected cases. Considering that pulmonary resection can be done after, it represents a mean of diagnosis at least better than fine needle aspiration biopsy. Laparoscopic adrenalectomy might also be considered in the resection of a synchronous and isolated metastasis as a way to improve survival.  相似文献   
44.
45.
Chronic arsenic poisoning remains a public health crisis in Bangladesh. As arsenic has been shown to bind to human hemoglobin (Hb), hematologic mechanisms may play a role in the pathway through which arsenic exerts its toxicity. Two separate studies, a case-control and a cohort, were conducted to investigate the role of Hb in the development of arsenic-induced skin lesions. In the first, conditional logistic regression was used to investigate the effect of Hb on skin lesions among 900 case-control pairs from Pabna, Bangladesh, in which individuals were matched on gender, age, and location. In the second, mixed linear regression models were used to examine the association between toenail arsenic, urinary arsenic, and Hb within a cohort of 184 individuals from 50 families in the same region who did not have arsenic-induced skin lesions. Hb was significantly associated with skin lesions but this association was gender specific. In males, a 40% reduction in the odds of skin lesions occurred for every 1 g/dL increase in Hb (odds ratio, 0.60; 95% confidence interval, 0.49-0.73). No effect was observed for females (odds ratio, 1.16; 95% confidence interval, 0.92-1.46). In the cohort of 184 individuals, no associations between toenail arsenic or urinary arsenic species and Hb levels were observed. Low Hb levels may exacerbate the detrimental health effects of chronic arsenic poisoning. Whereas providing clean water remains the optimal solution to Bangladesh's problem of arsenic poisoning, improving nutrition and reducing iron-deficiency anemia may ameliorate negative health effects, such as skin lesions in individuals who have been exposed.  相似文献   
46.
47.
48.
49.
50.
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