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   1665篇
  免费   130篇
  国内免费   6篇
耳鼻咽喉   30篇
儿科学   144篇
妇产科学   17篇
基础医学   295篇
口腔科学   25篇
临床医学   99篇
内科学   332篇
皮肤病学   27篇
神经病学   172篇
特种医学   34篇
外科学   123篇
综合类   64篇
预防医学   107篇
眼科学   27篇
药学   110篇
中国医学   7篇
肿瘤学   188篇
  2023年   7篇
  2022年   12篇
  2021年   34篇
  2020年   20篇
  2019年   25篇
  2018年   38篇
  2017年   27篇
  2016年   24篇
  2015年   37篇
  2014年   50篇
  2013年   74篇
  2012年   90篇
  2011年   105篇
  2010年   61篇
  2009年   62篇
  2008年   82篇
  2007年   107篇
  2006年   75篇
  2005年   101篇
  2004年   79篇
  2003年   65篇
  2002年   52篇
  2001年   53篇
  2000年   56篇
  1999年   49篇
  1998年   33篇
  1996年   16篇
  1995年   12篇
  1994年   11篇
  1993年   7篇
  1992年   24篇
  1991年   26篇
  1990年   24篇
  1989年   25篇
  1988年   26篇
  1987年   19篇
  1986年   21篇
  1985年   22篇
  1984年   18篇
  1983年   13篇
  1981年   7篇
  1980年   7篇
  1979年   14篇
  1978年   12篇
  1977年   11篇
  1976年   9篇
  1974年   11篇
  1973年   6篇
  1972年   7篇
  1970年   7篇
排序方式: 共有1801条查询结果,搜索用时 15 毫秒
71.
72.
All blood culture reports obtained from newborns admitted in a neonatal care unit during 1983-87 were reviewed to determine the current bacteriological profile of neonatal septicemia. A total of 1160 neonates of high risk category or having clinical features suggestive of septicemia were subjected to blood culture study during this period. The culture positivity rate was 73%. Of these, 24.9% cultures were polymicrobial. Among the 1059, growths obtained, 60.1% were Gram negative, with Klebsiella, E. coli and Pseudomonas as the commonest pathogens. In Gram positive group, coagulase negative Staphylococci were most frequent, constituting 24% of the total isolates. An increasing incidence of coagulase positive Staphylococci and Pseudomonas infections was observed in recent years. Another significant finding was a comparatively high prevalence of Group D beta hemolytic isolates among streptococcal growths, with S. fecalis as the single commonest streptococci isolate.  相似文献   
73.
Conclusion The successful management of acute laryngeal stridor in infants and small children depends upon a close cooperation and team work of pediatrician, otolaryngologist and specialised nursing care in a pediatric intensive care unit. The overall opinion is in favour of steroid, racemic epinephrine and intubation or tracheostomy in severe croup. Endoscopy should be performed in all the cases, either immediately, prior to or con-commitant with the establishment of airways. This helps in achieving correct diagnosis and rationalising the treatment. Mortality and morbidity has been significantly reduced by close monitoring and quality nursing of intubated or tracheostomised child. Early extubation can be achieved by regular examination of laryngeal mucosa by direct laryngoscopy in an intensive care unit. Cases of severe croup should be followed up, as they have increased susceptibility to develop bronchial asthma.  相似文献   
74.
Viral aetiology of acute respiratory infections in children in north India   总被引:2,自引:0,他引:2  
Two hundred and thirty children clinically diagnosed as suffering from acute respiratory infection were tested for four major groups of viral aetiological agents, i.e. influenza para-influenza, respiratory syncytial virus (RSV) and adenoviruses using indirect immunofluorescence technique. At least one of the respiratory viruses was identified in 51 (22 per cent) specimens, which included influenza A in 6 (3 per cent), influenza B in 3 (1 per cent), para-influenza type 1 in 3 (1 per cent), para-influenza type 3 in 13 (6 per cent), RSV in 11 (5 per cent) adenovirus in 12 (5 per cent), and dual virus infections in 3 (1 per cent) cases. Maximum number of virus identification was noted in children below 1 year of age, particularly infection with RSV followed by para-influenza and adenoviruses. Value of rapid diagnosis by indirect immunofluorescence technique is stressed.  相似文献   
75.
76.
77.
The present study was undertaken to establish priorities in neonatal care and to find out neonatal mortality pattern in a rural based medical college hospital. One hundred and twentythree neonatal deaths out of 1461 live births constituted the study material. The neonatal mortality rate was 84.2/1000 live births. The mortality in preterm, full term and post term infants was 43.13,4.02,7.02 percent respectively (p<0.001). The mortality in relation to birth weight was 100 percent (<1000 g); 71.43 percent (1000–1499 g); 37.14 percent (1500–1999 g); 7.63 percent (2000–2499 g) and 2.94 percent (>2500 g). Almost 70 percent of all deaths were because of severe birth anoxia and septicemia (including meningitis) either alone or in combination.  相似文献   
78.
Five hundred consecutive newborns were screened for erythrocytic G6PD deficiency in cord blood. The overall incidence of G6PD deficiency was found to be 2.80 percent. The incidence of G6PD deficiency was higher among males (3.77%) compared to females (1.44%). The incidence of erythrocytic G6PD deficiency was higher in Muslims (16.67%) compared to Hindus (2.63%). No definite relationship of erythrocytic G6PD deficiency was observed with consanguinity. Fifty per cent mothers of G6PD deficient newborns were also found to be G6PD deficient. Among brothers and sisters of G6PD deficient children the incidence of G6PD deficiency was 50.00 and 9.10 per cent respectively. There was no significant difference in the incidence of hyperbilirubinemia between erythrocytic G6PD deficient and non deficient newborns.  相似文献   
79.
The present study was undertaken to establish priorities in neonatal care and to ascertain the neonatal mortality pattern in a rural based medical college hospital. 123 neonatal deaths out of 1461 live births constituted the study material. The neonatal mortality rate was 84.2/1000 live births. The mortality in preterm, fullterm, and postterm infants was 43.13, 4.02, and 7.02% respectively (P0.001). The mortality in relation to birthweight was 100% (1000 g); 71.43% (1000-1499 g); 37.14% (1500-1999 g); 7.63% (2000-2499 g), and 2.94% (2500 g). Almost 70% of all deaths were due to severe birth anoxia and septicemia (including meningitis), either alone or in combination.  相似文献   
80.
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