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   253篇
  免费   7篇
  国内免费   2篇
儿科学   12篇
妇产科学   7篇
基础医学   16篇
口腔科学   6篇
临床医学   24篇
内科学   36篇
皮肤病学   36篇
神经病学   16篇
特种医学   4篇
外科学   45篇
综合类   22篇
预防医学   11篇
眼科学   10篇
药学   12篇
肿瘤学   5篇
  2011年   1篇
  2010年   1篇
  2009年   3篇
  2006年   2篇
  2002年   1篇
  2001年   1篇
  1999年   2篇
  1998年   4篇
  1997年   8篇
  1996年   5篇
  1995年   3篇
  1994年   4篇
  1993年   4篇
  1992年   4篇
  1991年   8篇
  1990年   2篇
  1989年   7篇
  1988年   5篇
  1987年   7篇
  1986年   5篇
  1985年   4篇
  1984年   5篇
  1983年   4篇
  1982年   2篇
  1981年   5篇
  1980年   4篇
  1979年   3篇
  1978年   5篇
  1977年   3篇
  1976年   2篇
  1975年   1篇
  1974年   1篇
  1968年   1篇
  1967年   1篇
  1966年   6篇
  1965年   1篇
  1964年   1篇
  1963年   1篇
  1962年   1篇
  1961年   3篇
  1959年   17篇
  1958年   24篇
  1957年   13篇
  1956年   15篇
  1955年   24篇
  1954年   19篇
  1949年   9篇
  1948年   3篇
  1947年   1篇
  1946年   1篇
排序方式: 共有262条查询结果,搜索用时 14 毫秒
51.
The association between degree of cognitive impairment and severity of depressive symptoms was examined in a randomly selected community-based sample of elderly people and in a sample of patients referred to an old age psychiatry service. Findings contradict previous reports of less cognitive impairment in demented patients with depressive symptoms. We suggest that sample selection bias has contributed to the earlier reports. © 1997 John Wiley & Sons, Ltd.  相似文献   
52.
We present a rare challenging case of metastatic non-small cell lung cancer with Epstein-Barr virus positivity that was also diagnosed with pulmonary tuberculosis at the same time. Palliative chemotherapy gemcitabine and carboplatin was started after two weeks of anti-tuberculosis treatment with the hopes that this period would be sufficient to keep acid fast bacilli non-viable to minimise risk of tuberculosis re-activation due to chemotherapy induced immunosuppression. She completed four cycles of chemotherapy and six months of anti-tuberculosis treatment with good results and minimal side effects. Two years later, there was disease recurrence in cervical and mediastinal lymph nodes which was treated with local treatment i.e. surgery and palliative radiotherapy. It has been two years since last radiotherapy and overall more than five years since diagnosis with no active disease at present. Given the complexity and rarity of this case, significant multidisciplinary team involvement, including oncologists and radiation oncologists, pulmonologists with special interest in tuberculosis and pathologists was necessary throughout.  相似文献   
53.
54.
55.
56.
57.
A kindred is described, six members of which fulfilled criteria for the syndrome of familial hypocalciuric hypercalcaemia (FHH). The majority of these individuals were asymptomatic: their hypercalcaemia was revealed by biochemical screening after parathyroid surgery had failed to diminish the elevated serum calcium concentration of the index case. In contrast to those members of the family diagnosed as adults, the daughter subsequently born to the index case included in her expression of FHH clinical features of severe neonatal primary hyperparathyroidism. Four hyperplastic parathyroid glands were excised, and following surgical intervention the baby improved clinically and accelerated the healing of her skeletal lesions. Her case suggests that an association does exist between FHH and neonatal primary hyperparathyroidism. Of the ten individuals at risk, inheritance of hypocalciuric hypercalcaemia was paralleled in eight cases by inheritance of the HLA haplotype All BW55 CW3 DR4. Such possible linkage has not previously been reported.  相似文献   
58.
Two different types of halothane vaporizer are compared. TheGoldman is simple, small and inefficient as a vaporizer. TheFluotec is relatively large, complicated, and highly efficient.It is suggested that there is a need for a modified versionof the simple type, capable of producing up to 5 per cent vapour.It is further suggested that it is not necessary, in clinicalpractice, to be able to vary the concentrations by very accuratelyknown small amounts. To be able to do so is an expensive andunnecessary luxury which is not attainable in practice and theoreticallycarries the risk of accidentally delivering a gross overdose.  相似文献   
59.
Two cases in which cerebral abscess was the initial presenting feature of pulmonary arteriovenous malformations are reported. Cerebral abscess recurred in one patient. The pulmonary malformations were multiple and bilateral in both cases. One patient had associated features of hereditary hemorrhagic telangiectasia. Surgical resection of the largest malformations was performed in both cases. Cerebral abscess did not recur in either case post-operatively, though this may not have been due to surgical intervention.  相似文献   
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