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   423647篇
  免费   48348篇
  国内免费   371篇
  2016年   4252篇
  2015年   6603篇
  2014年   7451篇
  2013年   10572篇
  2012年   11729篇
  2011年   11617篇
  2010年   7771篇
  2009年   7284篇
  2008年   10313篇
  2007年   10767篇
  2006年   10160篇
  2005年   9842篇
  2004年   9728篇
  2003年   9182篇
  2002年   9176篇
  2001年   19014篇
  2000年   19570篇
  1999年   15608篇
  1998年   5337篇
  1997年   5550篇
  1996年   5187篇
  1995年   4984篇
  1994年   4860篇
  1993年   4912篇
  1992年   12672篇
  1991年   12081篇
  1990年   11774篇
  1989年   11418篇
  1988年   10735篇
  1987年   10227篇
  1986年   9730篇
  1985年   9896篇
  1984年   8138篇
  1983年   6976篇
  1982年   5586篇
  1981年   5189篇
  1980年   4690篇
  1979年   7874篇
  1978年   6378篇
  1977年   5809篇
  1976年   5489篇
  1975年   6133篇
  1974年   6824篇
  1973年   6737篇
  1972年   6211篇
  1971年   5607篇
  1970年   4830篇
  1969年   4803篇
  1968年   4373篇
  1967年   3673篇
排序方式: 共有10000条查询结果,搜索用时 630 毫秒
991.
Among new researches bearing on cerebral palsy are the growth of brain cells in tissue cultures for experimentation; the use of polysaccharides to prevent the formation of a glial barrier to nerve growth after injury; observation of changes in reactions of neurons at various stages of development; the finding of hypernatremia and hyperchloremia in lesions of the frontal lobe and the thalamus; stimulation of cerebral blood flow by injection of sodium bicarbonate and retardation with ammonium chloride; and studies of serial sections of brains of palsied children who died. Study of development in the early months of life has made possible the detection of significant abnormalities in behavior early in life. Loss of hearing may be tested in very young children by measuring minute variations in electrical resistance of the skin upon auditory stimulation of the sympathetic nervous system. Conditions which have been described as having been confused with cerebral palsy are dislocation of a cervical vertebra, hereditary spastic paraplegia, transverse myelopathy, injury to the spinal cord or cauda equina by anomalous growths of the spine, and also encephalitis and meningitis. Sedation has proved a valuable adjunct to electroencephalographic study of cerebral palsy. Better criteria for abnormality in the young child should be determined and the application of them more clearly standardized. Simple exercises are useful for early training of palsied children to stimulate development. "Crossed laterality"-the dominant eye being contralateral to the preferred hand-has been counteracted by special training with great success in eliminating emotional and behavior problems and accelerating development.Recent studies indicate that only 50 per cent of cerebral palsy patients have normal or better intelligence. Subluxation of the hip joint, a common deformity associated with cerebral palsy, can sometimes be corrected by operation if detected at an early stage. Radical ablation of epileptogenic foci in the cortex is also being done in young patients if drug control of seizures fails. Frontal topectomy, cingulate gyrectomy or prefrontal labotomy may be advisable in cases in which proper response to drug therapy is not obtained. Improvement in behavior as well as control of seizures may follow the use of Benzedrine,(R) Dexedrine,(R) Dilantin(R) sodium, Mebaral(R) and phenobarbital. Alcohol, paraldehyde and chloral hydrate have been effective as relaxants.  相似文献   
992.
Medical skills should be developed by the staffs of smaller hospitals for the differential study of patients with symptoms resembling those of poliomyelitis in order to provide the rudiments of care for the occasional patient with mild poliomyelitis, to recognize the indications which point to the necessity of superior technical assistance, and to decide when it is appropriate to move patients to better equipped centers. The impetuous acquisition of mechanical aids for the treatment of special problems will be effective in small communities only to the extent that this equipment is kept serviceable and is operated by persons of sufficient skill. Epidemic situations in a small community can be met only by mobilization of facilities under adequate direction and by integration of care with that provided by larger treatment centers.  相似文献   
993.
994.
995.
996.
997.
998.
999.
1000.
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