全文获取类型
收费全文 | 297篇 |
免费 | 13篇 |
国内免费 | 1篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 10篇 |
妇产科学 | 7篇 |
基础医学 | 21篇 |
口腔科学 | 3篇 |
临床医学 | 37篇 |
内科学 | 54篇 |
皮肤病学 | 2篇 |
神经病学 | 21篇 |
特种医学 | 19篇 |
外科学 | 51篇 |
综合类 | 1篇 |
预防医学 | 22篇 |
眼科学 | 2篇 |
药学 | 47篇 |
肿瘤学 | 13篇 |
出版年
2022年 | 4篇 |
2021年 | 6篇 |
2019年 | 3篇 |
2018年 | 8篇 |
2017年 | 6篇 |
2016年 | 5篇 |
2015年 | 5篇 |
2013年 | 9篇 |
2012年 | 12篇 |
2011年 | 7篇 |
2010年 | 4篇 |
2009年 | 8篇 |
2008年 | 3篇 |
2007年 | 11篇 |
2006年 | 9篇 |
2005年 | 10篇 |
2004年 | 18篇 |
2003年 | 13篇 |
2002年 | 9篇 |
2001年 | 9篇 |
2000年 | 5篇 |
1999年 | 6篇 |
1996年 | 3篇 |
1993年 | 3篇 |
1992年 | 7篇 |
1991年 | 5篇 |
1990年 | 4篇 |
1989年 | 10篇 |
1988年 | 5篇 |
1987年 | 7篇 |
1986年 | 3篇 |
1985年 | 5篇 |
1984年 | 4篇 |
1980年 | 4篇 |
1979年 | 4篇 |
1976年 | 5篇 |
1975年 | 6篇 |
1973年 | 3篇 |
1972年 | 2篇 |
1971年 | 3篇 |
1969年 | 3篇 |
1968年 | 3篇 |
1966年 | 3篇 |
1963年 | 2篇 |
1957年 | 2篇 |
1939年 | 2篇 |
1938年 | 5篇 |
1937年 | 5篇 |
1935年 | 2篇 |
1933年 | 4篇 |
排序方式: 共有311条查询结果,搜索用时 15 毫秒
1.
2.
On the basis of x-ray morphometric examinations employing 2,500 x-ray photographs age- and sex-specific standard value curves of the bone mineral content are ascertained for the methods by Singh, Saville and Barnett/Nordin. Evaluations leads to the refusal of the wide clinical application of these methods. The combined application of these methods with microradioscopy employed in the forefield diagnostics of demineralizing skeleton diseases is possible only with proviso. 相似文献
3.
Joseph Levine Mirtha Gonsalves Izak Babur Shaul Stier Avner Elizur Ora Kofman R. H. Belmaker 《Human psychopharmacology》1993,8(1):49-53
Inositol is an important precursor for second messenger synthesis and has been reported to be reduced by lithium treatment in rat brain and in human CSF in depression. An open trial of 6 g/day in 11 depressed patients resistant to previous treatment led to major improvement in nine patients. The enzyme synthesizing inositol has been reported to be elevated in schizophrenia, suggesting an attempted compensation for possible inositol deficiency. A controlled double-blind crossover trial in 10 chronic schizophrenic patients of 6 g/day of inositol for 30 days did not reveal any benefit. 相似文献
4.
5.
Outbreak of carbapenem-resistant Acinetobacter baumannii producing the OXA-23 enzyme in Curitiba,Brazil 总被引:19,自引:0,他引:19
Dalla-Costa LM Coelho JM Souza HA Castro ME Stier CJ Bragagnolo KL Rea-Neto A Penteado-Filho SR Livermore DM Woodford N 《Journal of clinical microbiology》2003,41(7):3403-3406
Carbapenem-resistant Acinetobacter baumannii isolates were obtained from eight patients in two hospitals in Curitiba, Brazil. The isolates were multiresistant, belonged to a single strain, and produced the OXA-23 carbapenemase. Treatment options were limited, although the isolates were susceptible to polymyxin B in vitro. The strain contributed to the deaths of five patients. 相似文献
6.
Stein D Kurtsman L Stier S Remnik Y Meged S Weizman A 《Journal of affective disorders》2004,82(3):335-342
BACKGROUND: The knowledge available on electroconvulsive therapy (ECT) in adolescents is largely anecdotal, or based on findings from adults. The aim of the present study is to compare the use of ECT in adolescent and adult inpatients. METHODS: We retrospectively analyzed the files of all 36 adolescent (between the ages of 13 and 19) and 57 randomly selected adult inpatients (above the age of 20) treated with ECT in a university-affiliated mental heath center in Israel between 1991 and 1997. RESULTS: Sixty one percent of the adolescents improved by the end of treatment, and 53% were not hospitalized in the subsequent year. The respective percentages among adults were 83% and 49%. Whereas most adults were treated with ECT because of schizophrenic disorders, almost half of the adolescents received ECT for affective disorders. Significantly more adolescents were treated with ECT because of acute life-endangering conditions (catatonia or severe suicidal risk). No significant adverse effects were found in both groups. LIMITATIONS: Our study is based on a retrospective chart review. The adolescent and adult groups are different in psychiatric morbidity, diagnosis and outcome, have not been assessed in a blind manner, and we have not used standardized psychometric batteries for the evaluation of ECT-related memory disturbances. CONCLUSIONS: ECT may be an effective, well-tolerated and safe procedure in both adult and adolescent inpatients. 相似文献
7.
8.
BACKGROUND AND OBJECTIVE: This study was conducted to determine preoperative predictors of postoperative visual acuity in patients with acquired immunodeficiency syndrome (AIDS) and cytomegalovirus (CMV) retinitis and retinal detachment. PATIENTS AND METHODS: The study design was a retrospective chart review of 38 eyes in 33 patients with AIDS and CMV retinitis who had retinal reattachment surgery by pars plana vitrectomy with the use of silicone oil tamponade. Factors considered included: preoperative visual acuity, macular attachment status and CMV activity at the time of surgery, and length of time from diagnosis of retinal detachment to surgical repair. RESULTS: Retinal reattachment was achieved in 37 of 38 eyes. Mean interval from surgery to best corrected visual acuity (VA) was 9 weeks. The mean best corrected post-op VA was 20/70. Approximately half of the patients died within 7 months of the surgery. There was good correlation between preoperative VA and best attained postoperative VA (Spearman's: r = 0.5139, P = 0.001). The interval from retinal detachment to surgery, and best attained postoperative VA did not correlate (Spearman's: r = 0.2339, P=0.158). The lack of macular CMV retinitis correlated well with postoperative VA (P = 0.0066, Wilcoxon rank-sum test). CONCLUSIONS: Preoperative visual acuity and macular attachment status correlates with better postoperative visual acuity results, whereas early surgical repair of retinal detachment does not. 相似文献
9.
Koppie TM Grossfeld GD Miller D Yu J Stier D Broering JM Lubeck D Henning JM Flanders SC Carroll PR 《The Journal of urology》2000,164(1):81-88
PURPOSE: We determined the demographic and clinical profile of men who elect surveillance as the initial management of prostate cancer as well as the incidence and predictors of secondary treatment of these patients. MATERIALS AND METHODS: The Cancer of the Prostate Strategic Urological Research Endeavor (CaPSURE) is a national disease registry of patients with various stages and treatments of prostate cancer. Using this database of 4,458 men we identified 329 (8.2%) who elected surveillance as the initial management of prostate cancer. Patients choosing watchful waiting were compared to other CaPSURE participants using the chi-square test. The likelihood of treatment initiation in the watchful waiting group was calculated using the Kaplan-Meier method. After adjusting for patient age, race, prostate specific antigen (PSA) at diagnosis, clinical T stage and total Gleason score the Cox proportional hazards regression model was used to determine significant predictors of treatment initiation. RESULTS: Compared with others in the database, patients on watchful waiting were more likely to be 75 years old or older (51% versus 16%, p <0.001), white (93% versus 85%, p <0.001), and have lower serum PSA (p <0.001), organ confined disease (97% versus 88%, p <0.001) and a total Gleason score of 7 or less (97% versus 88%, p <0.001). In the watchful waiting group there was a 52% likelihood of treatment initiation within 5 years of the diagnosis. Significant predictors of secondary treatment were age younger than 65 years and elevated serum PSA at diagnosis. Neither race, extraprostatic stage cT3 disease nor higher total Gleason score was a significant predictor of treatment. CONCLUSIONS: Men who elect initial watchful waiting for prostate cancer tend to be older, have lower serum PSA and more favorable disease characteristics than those who seek treatment. PSA at diagnosis is the dominant factor for predicting secondary treatment. 相似文献
10.