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   357篇
  免费   19篇
  国内免费   66篇
耳鼻咽喉   2篇
儿科学   41篇
妇产科学   1篇
基础医学   37篇
口腔科学   25篇
临床医学   60篇
内科学   84篇
皮肤病学   1篇
神经病学   11篇
特种医学   96篇
外科学   12篇
综合类   17篇
预防医学   5篇
药学   38篇
中国医学   2篇
肿瘤学   10篇
  2022年   1篇
  2019年   2篇
  2018年   2篇
  2017年   5篇
  2016年   4篇
  2015年   2篇
  2014年   6篇
  2013年   8篇
  2012年   7篇
  2011年   6篇
  2010年   8篇
  2009年   11篇
  2008年   8篇
  2007年   37篇
  2006年   8篇
  2005年   7篇
  2004年   2篇
  2003年   6篇
  2002年   14篇
  2001年   15篇
  2000年   11篇
  1999年   9篇
  1998年   26篇
  1997年   26篇
  1996年   25篇
  1995年   18篇
  1994年   18篇
  1993年   10篇
  1992年   1篇
  1991年   3篇
  1990年   11篇
  1989年   15篇
  1988年   16篇
  1987年   12篇
  1986年   11篇
  1985年   16篇
  1984年   4篇
  1983年   7篇
  1982年   8篇
  1981年   8篇
  1980年   5篇
  1978年   7篇
  1977年   4篇
  1976年   5篇
  1975年   7篇
排序方式: 共有442条查询结果,搜索用时 0 毫秒
21.
22.
Objective : To determine the approach to identifying neonatal hypoglycaemia and the definition of neonatal hypoglycaemia used by neonatal paediatricians in Australian Level 3 neonatal intensive care units (NICU).
Methodology : A questionnaire was sent to the 101 neonatal paediatricians in the 22 Level 3 NICU in Australia asking their method of screening for, and definition of, neonatal hypoglycaemia.
Results : Responses were received from 70 neonatal paediatricians, including all 22 directors. A bedside glucose meter is used in 19 of 22 NICU to screen for hypoglycaemia, whilst one NICU uses a glucose analyzer and another NICU uses a visual colour comparison method. One NICU does not screen, but has blood glucose measured in a satellite laboratory. If the screening method suggests hypoglycaemia, 62 of 63 neonatal paediatricians proceed to blood glucose determination in a laboratory, mostly using plasma samples. Based on the laboratory measurement, the definition of neonatal hypoglycaemia ranged from <1.1 to 3.0 mmol/L.
Conclusions : The majority of neonatal paediatricians in Australian NICU screen for neonatal hypoglycaemia using a bedside glucose meter. There is a wide range in the definition of neonatal hypoglycaemia from <1.1 to 3.0mmol/L.  相似文献   
23.
The original article to which this Erratum refers was published in Phytotherapy Research 14(5) 2000, 344-346. Following the publication of this paper in the August 2000 issue of Phytotherapy Research (14(5):344-346), it has come to our attention that there is a misleading statement regarding conclusions cited from the work of Butterweck et al. 1998. The discussion in the recent PTR paper states that those authors are 'in favour of the hypothesis that the antidepressant activity is due to the hypericin only'. We wish to make it clear that this is not the case, and the Butterweck paper actually concludes that 'both naphthodianthrones must be considered as active constituents of the crude extract of H. perforatum. However, previous studies indicate that the other consitutuents of the crude drug also have activity'. The authors apologize for this error and are happy to correct it.  相似文献   
24.
Two recent studies published in this Journal draw attention to deficiencies in treatment of children with acute infectious diarrhoea in Australia.1,2 There is now no doubt that use of correctly constituted oral rehydration solutions provides optimal therapy for affected children unless circulation is compromised, vomiting is more than average, or complicating disorders are present. In the vast majority of cases, these complications do not occur. A high proportion of the childhood population experiences gastroenteritis at some time. It is known that 50% of Melbourne children require medical attention for rotavirus infection alone during their first 3 years of life, although less than 5% require admission.  相似文献   
25.
Computed tomography of the pancreas   总被引:2,自引:0,他引:2  
  相似文献   
26.
27.
Respiratory function studies were carried out in 22 infants who had successful repair of diaphragmatic herniae of the Bochdalek type. Thoracic gas volume was initially reduced in only 3 of these, but subsequent studies showed that improvement occurred. There were no consistent abnormalities in either dynamic compliance or mean pulmonary conductance. This is evidence that there is rapid adaptation which compensates for any alteration in the parenchymatous tissue in the lungs or abnormalities in the bronchial tree in infants soon after the repair of congenital diaphragmetic herniae. Further studies are necessary to determine the changes in these lungs with growth.  相似文献   
28.
29.
AIMS: Long acting subcutaneous testosterone pellets are of proved efficacy for the treatment of hypogonadal men, but have not been reported as a treatment modality in adolescent boys. Pharmacodynamic studies of subcutaneous testosterone release have shown prolonged normalisation of testosterone levels for at least four months. Administration of a long acting, safe, effective, and convenient form of treatment is desirable when life-long treatment is indicated. PATIENTS AND METHODS: Eighteen boys (aged 13.9-17.5 years at the start of treatment)-seven with primary hypogonadism, nine with secondary hypogonadism, and two boys being treated with testosterone for tall stature--were given testosterone pellets (8-10 mg/kg) every six months for 18 months. Height, weight, pubertal status, and psychosocial parameters were assessed and follicle stimulating hormone, luteinising hormone, testosterone, prolactin, and lipids were measured at 0, 1, 3, 6, 12, and 18 months. Bone age was measured at 0 and 12 months. RESULTS: In all boys growth velocity continued appropriately for bone age. Puberty continued to progress in all boys and in two boys the amount of virilisation exceeded that seen with previous treatment with intramuscular testosterone. After testosterone administration, follicle stimulating hormone and luteinising hormone suppressed incompletely in the boys with primary hypogonadism. Serum testosterone ranged from 4.3 to 26.7 nmol/l at three months to less than 10 nmol/l at six months after implantation. Prolactin and lipid levels were normal throughout the study. By report, there was an improvement in mood and emotional wellbeing. No pellet extrusions occurred in a total of 156 pellet insertions. CONCLUSIONS: All boys preferred this mode of testosterone administration to intramuscular injections. Long acting subcutaneous testosterone pellets are safe, efficacious, well tolerated, and convenient, and result in normal physical growth and improved psychological outlook in adolescent hypogonadal boys.  相似文献   
30.
王玉  陈国良  吴耀民 《医学争鸣》2005,26(10):960-960
在大规模登陆作战中需要大量的卫生船舶实施各种保障,因此必须对卫生船舶进行合理的配置,保证其既能有效地完成保障任务,又能避免重叠配置造成浪费.卫生船舶的配置应与指挥关系、保障任务战时分类相适应,具体配置时按医院船、卫生运输船、卫生救护艇的保障要求配置,并可根据保障任务的变化进行相应的调整.  相似文献   
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