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   695篇
  免费   27篇
  国内免费   3篇
耳鼻咽喉   39篇
儿科学   16篇
妇产科学   53篇
基础医学   86篇
口腔科学   21篇
临床医学   32篇
内科学   96篇
皮肤病学   9篇
神经病学   15篇
特种医学   6篇
外科学   133篇
综合类   19篇
预防医学   31篇
眼科学   20篇
药学   42篇
中国医学   5篇
肿瘤学   102篇
  2022年   9篇
  2021年   26篇
  2020年   17篇
  2019年   13篇
  2018年   16篇
  2017年   10篇
  2016年   17篇
  2015年   15篇
  2014年   20篇
  2013年   23篇
  2012年   34篇
  2011年   45篇
  2010年   21篇
  2009年   19篇
  2008年   21篇
  2007年   47篇
  2006年   30篇
  2005年   22篇
  2004年   24篇
  2003年   32篇
  2002年   19篇
  2001年   18篇
  2000年   18篇
  1999年   9篇
  1998年   5篇
  1997年   4篇
  1996年   11篇
  1995年   4篇
  1993年   6篇
  1992年   9篇
  1991年   8篇
  1990年   6篇
  1989年   4篇
  1988年   8篇
  1987年   6篇
  1986年   6篇
  1985年   10篇
  1984年   4篇
  1983年   8篇
  1982年   4篇
  1981年   8篇
  1945年   5篇
  1944年   3篇
  1943年   4篇
  1941年   4篇
  1939年   7篇
  1937年   4篇
  1930年   3篇
  1917年   4篇
  1916年   3篇
排序方式: 共有725条查询结果,搜索用时 15 毫秒
1.
2.
A case of carcinoma of the supraglottic larynx, who had a normal childbirth after total laryngectomy, is presented. This is extremely rare, because of the absence of glottic closure which fixes the cheset wall during the bearing down pains of normal labour.  相似文献   
3.
A sixty year old patient underwent radical Radiotherapy for a transglottic laryngeal carcinoma and the primary site was free of disease 6 weeks later. The initial work up showed a clear roentgenogram of the chest and the vertebral architecture was normal. The patient had neurological symptoms few months later and a diagnostic CT Scan of brain showed intracranial metastases. Locally he was disease free as in the chest. After a palliative course of radiotherapy of the brain, the patient expired. The probable route of spread was discussed.  相似文献   
4.
Cancer of the larynx is fourteenth most common cancer in the world. Evidence from case-control studies conducted in developed as well as developing countries suggest that specific micro-nutrients and trace elements have been implicated to be significantly associated with laryngeal carcinoma. The association of these micro-nutrients and trace elements with laryngeal cancer has been discussed in this review article.  相似文献   
5.
Quantitative changes in the total protein in the brain of aging male and female Periplaneta americana have been observed. A significant increase of total protein and neurosecretory cells in the brain up to 5 months, followed by a considerable decline in later age, points to a direct relationship between the neurosecretory cell number and reproductive phenomenon. Higher total protein concentration and cell number maintain reproduction up to 5 months while a decline after 6 months of adult life adversly affects reproduction. This suggests that neurosecretory cell number and protein concentration are related to reproduction and thereby aging.  相似文献   
6.
Journal of Public Health - Few studies have been performed to investigate multiorgan failure occurring with extrapulmonary symptoms like diarrhea, anorexia, and vomiting. There has been no attempt...  相似文献   
7.
Twelve patients undergoing surgery between May 1995 and March 1999 for malignant tumours of the paranasal sinuses abutting or invading the orbital walls were studied for the need to remove orbital contents. Alt patients were evaluated clinically, radiologically (CT Scan) and per-operatively to delineate the extent of orbital invasion. Combined regimen (Surgery + Radiotherapy) were used in all patients. A biopsy from periorbita was taken when eye was spared. It was found that per-operative evaluation of the orbit is equally specific in comparision to clinical and CT Scan combined and eye may be preserved in selected patients with involvement of orbital periosteum provided there is no frank soft tissue mass in the orbit.  相似文献   
8.
Radical neck dissection is a standard procedure carried out for the teatment of palpable nodes in the neck but if carried out electively in cases where there are no palpable nodes in the neck it is considered to be an overtreatment with its associated morbity. Lateral neck dissection was carried out on twenty patients who had T31 T4 lesion of the larynx and hypophar-vnx with NO neck. The dissection entails removal of Level II. III and IV nodes. Occult metastasis 80% and 85% respectively. The mean follow up was 13 monts. It appears from our study that elective lateral neck dissection is a promising and safe procedure and may be useful as an important prognostic tool in sampling the lymph nodes and predicting recurrences in the neck.  相似文献   
9.
Twenty‐six patients of Cystosarcoma phyllodes, treated between July 1994 and July 2001, were analysed retrospectively. Median age at presentation was 38 years (range 13?61 years). Mean size of the lesion was 6 cm. There were 77% left‐sided lesions and 23% right‐sided lesions. Histologically, 58% lesions were benign, 11% borderline and 31% malignant lesions. All patients underwent definitive surgical procedure in the form of wide local excision or mastectomy. Four patients received postoperative radiotherapy. Median follow‐up period was 35 months. Six patients showed recurrence, and four of these were malignant. Median disease‐free survival period was 34 months.  相似文献   
10.
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