全文获取类型
收费全文 | 290篇 |
免费 | 17篇 |
国内免费 | 1篇 |
专业分类
儿科学 | 6篇 |
妇产科学 | 4篇 |
基础医学 | 48篇 |
口腔科学 | 3篇 |
临床医学 | 35篇 |
内科学 | 57篇 |
皮肤病学 | 3篇 |
神经病学 | 17篇 |
特种医学 | 22篇 |
外科学 | 46篇 |
综合类 | 12篇 |
预防医学 | 13篇 |
眼科学 | 10篇 |
药学 | 9篇 |
肿瘤学 | 23篇 |
出版年
2023年 | 2篇 |
2022年 | 7篇 |
2021年 | 9篇 |
2020年 | 6篇 |
2019年 | 9篇 |
2018年 | 8篇 |
2017年 | 6篇 |
2016年 | 3篇 |
2015年 | 8篇 |
2014年 | 12篇 |
2013年 | 9篇 |
2012年 | 21篇 |
2011年 | 9篇 |
2010年 | 13篇 |
2009年 | 4篇 |
2008年 | 7篇 |
2007年 | 7篇 |
2006年 | 11篇 |
2005年 | 14篇 |
2004年 | 7篇 |
2003年 | 9篇 |
2002年 | 5篇 |
2001年 | 3篇 |
2000年 | 3篇 |
1999年 | 6篇 |
1997年 | 4篇 |
1996年 | 2篇 |
1995年 | 2篇 |
1994年 | 4篇 |
1992年 | 9篇 |
1990年 | 7篇 |
1989年 | 2篇 |
1987年 | 5篇 |
1986年 | 3篇 |
1985年 | 2篇 |
1984年 | 2篇 |
1983年 | 3篇 |
1982年 | 3篇 |
1980年 | 3篇 |
1979年 | 6篇 |
1978年 | 5篇 |
1976年 | 2篇 |
1975年 | 7篇 |
1974年 | 6篇 |
1973年 | 6篇 |
1972年 | 4篇 |
1971年 | 7篇 |
1970年 | 2篇 |
1969年 | 3篇 |
1967年 | 2篇 |
排序方式: 共有308条查询结果,搜索用时 15 毫秒
71.
Sciborski K Kobusiak-Prokopowicz M Dumański A Mysiak A 《Kardiologia polska》2010,68(10):1150-3; discussion 1153
A case of a 58 year-old male with renal failure and recurrent cardiac tamponade is presented. In spite of extensive work-up, aetiology of pericardial effusion remained unknown. Diagnostic difficulties in this setting are discussed. 相似文献
72.
Background
Intestinal obstruction is a common cause of pediatric surgical emergency with a high morbidity and mortality in Africa.Methods
A retrospective review of cases managed from January 1996 to December 2005 at a teaching hospital in Southwestern, Nigeria was done to examine the pattern of causes of intestinal obstruction in children and the management outcome.Results
One hundred and thirty cases were seen over the study period with an age range of 2 hours to 14 years. Majority (61.24%) were infants, while 18.46% were neonates.Fifty-five cases (42.31%) were due to congenital causes while the rest were of acquired causes. The major causes of intestinal obstruction in the study were intussusception (29.23%), anorectal malformations (22.31%), obstructed inguinoscrotal hernia (16.92%) and Hirschsprung''s disease (13.85%). Surgical site infection and sepsis were the commonest complications observed with an overall complication rate of 60.78%. The mortality rate was 3.08% and most (75%) occurred in neonates.Conclusion
While mortality as an outcome of management is low, the morbidity was very high in this study. 相似文献73.
74.
Background
The main objective of this study was to determine the prevalence and factors associated with mental illness in Oyo State at community level using the general health questionnaire as a screening tool. 相似文献75.
Human parvo-virus B19 infection among children with sickle cell anaemia in Jos,North Central Nigeria
Girei AI Alao OO Joseph DE Damulak DO Banwat EB Nwadioha SI Jombo GTA 《海南医学院学报》2010,16(10):1263-1265,1268
Objective:Human Parvovirus B19 is known to cause significant morbidity and mortality and among diverse patient population groups.Among patients with sickle all disease,who have high red cell turn over due to chronic haemolysis,infection with parvovirus B19 can cause severe life threatening transient aplastic crisis.This study was conducted to determine the Seroprevalence of parvovirus B19 infection and to provide basic epidemiological data on parvovirus B19 infection among children with sickle cell anaemia in Jos,north central Nigeria.Methods: In a hospital based cross sectional survey,200 children aged 1-18 years confirmed to have sickle cell anaemia attending the paediatric sickle cell clinic of Jos university teaching hospital were studied.A questionnaire was designed to obtain basic socio-demographic information,& other relevant aspect of patients′ history.Blood samples were taken for anti parvo-virus B19 serology.Results: The over all prevalence rates of parvo-virus B19 immunoglobulin(IgG) and immunoglobulin(IgM) antibodies were 39.5% and 3.5% respectively,Conclusion: This study confirms that parvo-virus B19 infection is prevalent among children with sickle cell anaemia in Jos,North Central Nigeria.There is a need for further studies to fully evaluate the clinical impact of the infection on our sickle cell anaemia patients. 相似文献
76.
77.
OO Ayandipo OJ Adepoju GO Ogun OO Afuwape OY Soneye IB Ulasi 《African health sciences》2022,22(1):115
BackgroundSurgical resection margins (RM), axillary nodal involvement and lymph node ratio (LNR) determine loco-regional control (LRC) in breast cancer management. Late presentation precludes breast conservation therefore surgical option is usually mastectomy and adjuvant chemoradiation minimize loco-regional recurrence (LRR).ObjectiveWe investigated the prognostic role of lymph nodes positive for malignancy (pN), LNR and RM on LRR of breast cancer in a tertiary hospital in Ibadan, Nigeria.MethodsLongitudinal cohort study of 225 females with breast carcinoma managed and followed up for 5-years with end point of LRR or not. Chi-square test and logistic regression analysis were used to evaluate the interaction of resection margin and proportion of metastatic lymph nodes with LRR. The receiver-operator curve was plotted to determine the proportion of metastatic lymph nodes which predicted LRR.ResultsNinety-nine percent had modified radical mastectomy and 163 (72.4%) had negative resection margins. A mean of 11 axillary lymph nodes were harvested at surgery. The age, positive resection margin and number of harvested nodes with malignant cells are associated with LRR. The overall 5-year LRR rate was 16%.ConclusionLRR is dependent on lymph node involvement as well as and tumor aggressiveness. 相似文献
78.
G K Zherlov A I Baranov D G Borshch A F Izatulin A A Gagarin N S Rudaia M A Duma 《Vestnik khirurgii imeni I. I. Grekova》1999,158(3):46-50
In surgical treatment of "difficult" ulcers of the stomach including ulcers of the proximal part of the stomach, giant ulcers (more than 3 cm in diameter) and multiple ulcers it is expedient to use resection of the stomach with the formation of functionally active anastomosis. The choice of the operative method is determined by specific features of the ulcerous process, morphofunctional state of proximal parts of the gastrointestinal tract which determines the individual character of the operative intervention. The use of such operative interventions has reduced the postoperative lethality to 0.9%. Complex examinations have established excellent and good results (by the Visick scale) at remote terms after operation in 95.2% of the patients. 相似文献
79.
Cucuianu A Patiu M Duma M Basarab C Soritau O Bojan A Vasilache A Mates M Petrov L 《British journal of haematology》1999,107(2):353-356
We determined the hepatitis C virus (HCV) antibodies (anti-HCV) and the hepatitis B virus (HBV) surface antigen (HBsAg) in a cohort of 68 consecutive non-Hodgkin's lymphoma (NHL) patients diagnosed and treated in our institution between December 1997 and March 1999. 27 cases were diagnosed as low-grade, 33 as intermediate-grade, and eight as high-grade NHL. In 35 cases (51.4%) we found evidence of either HCV or HBV infection. Anti-HCV antibodies were found in 20 patients (29.5%) and HBsAg was found in 21 patients (30.8%). In six patients both anti-HCV and HBsAg were present. Anti-HCV were present in 12/27 low-grade NHL cases (44.4%) and in 8/41 intermediate/high-grade (aggressive) NHL cases (19.5%, P < 0.03). HBsAg was found in 10/27 low-grade NHL cases (37%) and in 11/41 aggressive NHL cases (26.8%). Evidence of liver disease, as reflected by elevated aminotransferases or typical alterations at liver biopsy, was present in eight patients. Cryoglobulins were present in six patients, all anti-HCV positive and with low-grade NHL. The prevalence of both HCV antibodies and HBsAg was significantly higher (P < 0.0001) in our NHL cases than in a sample of the general Romanian population, where the prevalence of anti-HCV was 4.9% and that of HBsAg was 6.3%. It is difficult to say whether either HCV or HBV had actually been involved in lymphomagenesis or if alpha-interferon treatment would be effective in this subset of patients. 相似文献
80.
Duma SM Stitzel JD Crandall JR Ryan LP 《Journal of the Southern Orthopaedic Association》2002,11(2):80-87
This study was designed to determine the best method for presenting the bone mineral content of cadaveric test specimens. A total of 59 bone samples were taken from the humeri, radii, and ulnae of 14 female cadavers. For each sample, the bone mineral content was determined with a dual-energy x-ray absorptiometry scanner, and the ash-weight ratio was calculated manually. A linear regression analysis was performed to compare the ash-weight ratio to the 3 methods for reporting bone mineral content as measured by a dual-energy x-ray absorptiometry scanner: by bone mineral content divided by sample length (in g/cm), by projected area (in g/cm2), or by sample volume (in g/cm3). The analysis revealed that the ash-weight ratio correlates best with the volumetric representation. Based on these data, a volumetric representation is suggested as the best representation of bone mineralization, due to its correlation with ash-weight ratio. 相似文献