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   445篇
  免费   56篇
  国内免费   2篇
儿科学   14篇
妇产科学   2篇
基础医学   64篇
口腔科学   32篇
临床医学   36篇
内科学   262篇
皮肤病学   2篇
神经病学   9篇
特种医学   14篇
外科学   13篇
综合类   13篇
预防医学   16篇
眼科学   1篇
药学   15篇
肿瘤学   10篇
  2023年   2篇
  2021年   3篇
  2020年   5篇
  2019年   2篇
  2018年   1篇
  2017年   1篇
  2016年   1篇
  2015年   6篇
  2014年   2篇
  2013年   8篇
  2012年   23篇
  2011年   13篇
  2010年   18篇
  2009年   21篇
  2008年   24篇
  2007年   32篇
  2006年   33篇
  2005年   26篇
  2004年   21篇
  2003年   11篇
  2002年   13篇
  2001年   20篇
  2000年   16篇
  1999年   13篇
  1998年   19篇
  1997年   9篇
  1996年   8篇
  1995年   9篇
  1994年   11篇
  1993年   7篇
  1992年   7篇
  1991年   10篇
  1990年   15篇
  1989年   9篇
  1988年   10篇
  1987年   7篇
  1986年   10篇
  1985年   11篇
  1984年   3篇
  1983年   2篇
  1982年   8篇
  1981年   5篇
  1980年   5篇
  1979年   6篇
  1978年   3篇
  1977年   1篇
  1976年   5篇
  1975年   3篇
  1974年   2篇
  1973年   3篇
排序方式: 共有503条查询结果,搜索用时 15 毫秒
1.
Kim  SH; Chang  KH; Song  IC; Han  MH; Kim  HC; Kang  HS; Han  MC 《Radiology》1997,204(1):239
  相似文献   
2.
Background : Severe odontogenic infections are serious potentially lethal conditions. Following the death of a patient in the authors' institution this study was initiated to determine the risk factors, management and outcome of a consecutive series of patients.
Methods : All patients admitted to the Royal Adelaide Hospital under the care of the Oral and Maxillofacial Surgery Unit with odontogenic infections in calendar year 2003 were investigated. Detailed information relative to their pre-presentation history, surgical and anaesthetic management and outcome was obtained and analysed.
Results : Forty-eight patients, 32M, 16F, average age 34.5, range 19 to 88 years were treated. All presented with pain and swelling, with 21 (44 per cent) having trismus. Forty-four (92 per cent) were as a result of dental neglect and four (8 per cent) were regular dental patients having endodontic treatment which failed. Of those known to have been treated prior to presentation, most had been on antibiotics. Most patients had aggressive surgical treatment with extraction, surgical drainage, high dose intravenous antibiotics and rehydration. The hospital stay was 3.3 (range 1–16) days. Patients requiring prolonged intubation and high dependency or intensive care (40 per cent) had longer hospitalization. No patient died and all fully recovered.
Conclusion : Severe odontogenic infections are a serious risk to the patient's health and life. Management is primarily surgical with skilled anaesthetic airway management. Antibiotics are required in high intravenous doses as an adjunct and not as a primary treatment.  相似文献   
3.
Hysterosalpingography was performed in 31 patients by means of a low-dose scanning-beam digital radiographic system. The technique permits adequate evaluation of gynecologic abnormalities while allowing significant reduction in radiation: 2.4-mR (6.1 X 10(-7) C/kg) exposure to the skin and 0.7-mrad (7 X 10(-6) Gy) mean dose to the ovaries per image obtained. Sixteen patients demonstrated readily recognizable and documented abnormalities, corroborated by laparoscopy, laparotomy, or other supportive evidence.  相似文献   
4.
The elderly (age >65 years) are more vulnerable to side-effects induced by non-steroidal anti-inflammatory drugs (NSAIDs). We therefore performed a double-blind comparative study of ketoprofen SR and sulindac in patients with active rheumatoid arthritis, 65 years of age or older. Sulindac was chosen because of its possible renal sparing effects, and ketoprofen SR because of its short half life and sustained release delivery system. Eighty patients were entered. More patients withdrew from the study due to side-effects in the sulindac group; both treatment groups had a high incidence of side-effects during this study and during previous exposure to other NSAIDs, demonstrating that the elderly are susceptible to side-effects from NSAIDs.  相似文献   
5.
6.
Bile duct stones are almost always associated with gallbladder stones and coexist with gallbladder stones in approximately 10% of patients. The frequency of coexisting bile duct stones increases with advancing age. In patients with stones in both the gallbladder and bile duct, therapeutic options for the latter include laparoscopic or open exploration of the bile duct, and pre-operative and post-operative endoscopic sphincterotomy and stone extraction. Endoscopic sphincterotomy remains the treatment of choice for bile duct stones after cholecystectomy. However, management algorithms in individual institutions will be influenced by surgical and endoscopic expertise and by other factors such as overall costs. After surgical or endoscopic removal of bile duct stones, estimates of the lifetime risk of recurrent stones range from 5%-20%. Increased life expectancy and the apparent absence of simple preventative measures indicate that the burden of bile duct stones on health expenditure is likely to increase in many countries.  相似文献   
7.
8.
Granulomatous mastitis: a report of seven cases   总被引:5,自引:2,他引:5       下载免费PDF全文
The clinical history and histological features of seven cases of granulomatous mastitis are presented. The lesion occurs in young parous women as a tender extra-areolar breast lump. Histologically, non-caseating discrete granulomas are present, confined to breast lobules with, in three cases, coalescence of the granulomas and microabscess formation. Pathogenesis of the changes is discussed. It is thought that granulomatous mastitis is an entity morphologically distinct from duct ectasia/plasma cell mastitis and the commoner forms of granulomatous breast diseases.  相似文献   
9.
10.
Monoclonal rheumatoid factors (MCRF) have previously been used in a variety of assays for the detection of IgG-containing circulating immune complexes. We have isolated a MCRF from a patient with a lymphoproliferative disorder and have used a nephelometric technique to characterize its reaction with heat-aggreagated gammaglobulin (HAGG) used as a source of artificial immune complexes. The method is simple, economical and rapid and will detect as little as 6 microgram/ml of HAGG over a wide range of physicochemical conditions. A clinical study demonstrated that the sera from thirty-five out of fifty-eight patients (59%) with rheumatoid arthritis and twenty-one out of seventy-four patients (28%) with systemic lupus erythematosus (SLE) gave increased precipitation with MCRF compared with 232 blood donors. However, in marked contrast to previous studies, sucrose gradient ultracentrifugal analysis of nine strongly precipitating sera revealed that in eight the MCRF precipitated with material sedimenting in the monomeric IgG position. In only one specimen did the MCRF react with material sedimenting in heavier regions. It is suggested that different MCRFs vary in the specificity for binding IgG complexes and these reagents should be carefully characterized before becoming established in nephelometric assays for circulating immune complexes.  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