全文获取类型
收费全文 | 485篇 |
免费 | 34篇 |
国内免费 | 1篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 5篇 |
妇产科学 | 5篇 |
基础医学 | 77篇 |
口腔科学 | 19篇 |
临床医学 | 49篇 |
内科学 | 116篇 |
皮肤病学 | 7篇 |
神经病学 | 44篇 |
特种医学 | 8篇 |
外科学 | 53篇 |
综合类 | 10篇 |
预防医学 | 34篇 |
眼科学 | 16篇 |
药学 | 33篇 |
中国医学 | 1篇 |
肿瘤学 | 41篇 |
出版年
2023年 | 5篇 |
2022年 | 8篇 |
2021年 | 18篇 |
2020年 | 3篇 |
2019年 | 16篇 |
2018年 | 6篇 |
2017年 | 10篇 |
2016年 | 13篇 |
2015年 | 22篇 |
2014年 | 17篇 |
2013年 | 25篇 |
2012年 | 42篇 |
2011年 | 36篇 |
2010年 | 22篇 |
2009年 | 21篇 |
2008年 | 22篇 |
2007年 | 41篇 |
2006年 | 32篇 |
2005年 | 23篇 |
2004年 | 29篇 |
2003年 | 22篇 |
2002年 | 22篇 |
2001年 | 11篇 |
2000年 | 2篇 |
1999年 | 5篇 |
1998年 | 3篇 |
1997年 | 2篇 |
1996年 | 5篇 |
1995年 | 4篇 |
1994年 | 2篇 |
1993年 | 2篇 |
1992年 | 2篇 |
1989年 | 3篇 |
1988年 | 2篇 |
1987年 | 2篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1978年 | 2篇 |
1977年 | 2篇 |
1975年 | 1篇 |
1970年 | 1篇 |
1969年 | 1篇 |
1966年 | 1篇 |
1961年 | 2篇 |
1960年 | 2篇 |
1937年 | 1篇 |
1935年 | 1篇 |
1927年 | 1篇 |
排序方式: 共有520条查询结果,搜索用时 15 毫秒
101.
MDA.D. Mazzocca MDF.G. Alberta MDN.S. Elattrache MDA.A. Romeo 《Operative Techniques in Sports Medicine》2003,11(1):36
Various techniques throughout the years have been published on surgical repair of the distal biceps tendon foracute ruptures or for recalcitrant biceps tendinosis. The first report of a single incision technique to repair this tendon was in 1897 by S. Johnson in the New York Medical Journal. Since that time many different approaches and techniques have been developed. Interference screw fixation has been a reliable and well-tested method of tendon/ligament to bone attachment. There is a large body of literature concerning the various aspects of interference fit in the anterior cruciate ligament and proximal biceps tendon literature. Anatomic measurements, osteological analysis, and radiographic examination have provided information for the design of an interference screw that can be safely used in the proximal radius. We describe a technique using an interference screw through a single incision. We present two techniques for open tenodesis of the long head of the biceps. 相似文献
102.
Dorina Lauritano Massimo Petruzzi Dario Di Stasio Alberta Lucchese 《International journal of oral science》2014,(1):27-30
The aim of this study was to evaluate the efficacy of palifermin, an N-terminal truncated version of endogenous keratinocyte growth factor, in the control of oral mucositis during antiblastic therapy. Twenty patients undergoing allogeneic stem-cell transplantation for acute lymphoblastic leukaemia were treated with palifermin, and compared to a control group with the same number of subjects and similar inclusion criteria. Statistical analysis were performed to compare the outcomes in the treatment vs. control groups. In the treatment group, we found a statistically significant reduction in the duration of parenteral nutrition (P=0.002), duration of mucositis (P= 0.003) and the average grade of mucositis (P= 0.03). The statistical analysis showed that the drug was able to decrease the severity of mucositis. These data, although preliminary, suggest that palifermin could be a valid therapeutic adjuvant to improve the quality of life of patients suffering: from leukaemia. 相似文献
103.
Serena Lattante Mario Sabatelli Giulia Bisogni Giuseppe Marangi Paolo Niccolò Doronzio Francesco Martello Anna Gloria Renzi Elda Del Giudice Alberta Leon Paola Cimbolli Daniela Marchione Umberto Costantino Gabriele Lucioli Daniela Bernardo Emiliana Meleo Agata Katia Patanella Angela Romano Marcella Zollino Amelia Conte 《European journal of neurology》2023,30(5):1246-1255
Background and objectives
Genetic variants in the gene TARDBP, encoding TDP-43 protein, are associated with amyotrophic lateral sclerosis (ALS) in familial (fALS) and sporadic (sALS) cases. Objectives of this study were to assess the contribution of TARDBP in a large cohort of Italian ALS patients, to determine the TARDBP-associated clinical features and to look for genotype–phenotype correlation and penetrance of the mutations.Methods
A total of 1992 Italian ALS patients (193 fALS and 1799 sALS) were enrolled in this study. Sanger sequencing of TARDBP gene was performed in patients and, when available, in patients' relatives.Results
In total, 13 different rare variants were identified in 43 index cases (10 fALS and 33 sALS) with a cumulative mutational frequency of 2.2% (5.2% of fALS, 1.8% of sALS). The most prevalent variant was the p.A382T followed by the p.G294V. Cognitive impairment was detected in almost 30% of patients. While some variants, including the p.G294V and the p.G376D, were associated with restricted phenotypes, the p.A382T showed a marked clinical heterogeneity regarding age of onset, survival and association with cognitive impairment. Investigations in parents, when possible, showed that the variants were inherited from healthy carriers and never occurred de novo.Conclusions
In our cohort, TARDBP variants have a relevant frequency in Italian ALS patients and they are significantly associated with cognitive impairment. Clinical presentation is heterogeneous. Consistent genotype–phenotype correlations are limited to some mutations. A marked phenotypic variability characterizes the p.A382T variant, suggesting a multifactorial/oligogenic pathogenic mechanism. 相似文献104.
105.
106.
Toselli Marco Bosi Davide Benatti Giorgio Solinas Emilia Cattabiani Maria Alberta Vignali Luigi 《Journal of thrombosis and thrombolysis》2020,50(3):668-673
Journal of Thrombosis and Thrombolysis - Atrial fibrillation is the most common cardiac arrhythmia and is a major cause of embolic stroke. In patients at high bleeding risk such as those with... 相似文献
107.
Alberta G. A. Paul Lyndsey M. Muehling Jacob D. Eccles Judith A. Woodfolk 《Clinical and experimental allergy》2019,49(5):564-581
Severe asthma in children is a debilitating condition that accounts for a disproportionately large health and economic burden of asthma. Reasons for the lack of a response to standard anti‐inflammatory therapies remain enigmatic. Work in the last decade has shed new light on the heterogeneous nature of asthma, and the varied immunopathologies of severe disease, which are leading to new treatment approaches for the individual patient. However, most studies to date that explored the immune landscape of the inflamed lower airways have focused on adults. T cells are pivotal to the inception and persistence of inflammatory processes in the diseased lungs, despite a contemporary shift in focus to immune events at the epithelial barrier. This article outlines current knowledge on the types of T cells and related cell types that are implicated in severe asthma. The potential for environmental exposures and other inflammatory cues to condition the immune environment of the lung in early life to favour pathogenic T cells and steroid resistance is discussed. The contributions of T cells and their cytokines to inflammatory processes and treatment resistance are also considered, with an emphasis on new observations in children that argue against conventional type 1 and type 2 T cell paradigms. Finally, the ability for new technologies to revolutionize our understanding of T cells in severe childhood asthma, and to guide future treatment strategies that could mitigate this disease, is highlighted. 相似文献
108.
G T Griffing M Holbrook J C Melby J Alberta N R Orme-Johnson 《The American journal of the medical sciences》1989,298(2):83-88
19-Nor-deoxycorticosterone (19-nor-DOC) is a mineralocorticoid that is increased in some forms of experimental and human hypertension. The pivotal step in 19-nor-DOC biosynthesis is adrenal P450 19-hydroxylase, but this enzyme has not been clearly distinguished from P450 11 beta/18-hydroxylase. This study attempted to specifically inhibit adrenal 19-hydroxylation of deoxycorticosterone (DOC) using a suicide aromatase inhibitor, 19-acetylenic androstenedione (19-AA). Purified bovine P450 11 beta/18/19-hydroxylase was incubated with excess substrate DOC, adrenodoxin, and adrenodoxin reductase in the presence of increasing doses of the inhibitor, 19AA. 11 beta-, 18-, and 19-hydroxylation were measured by quantification of corticosterone, 18-OH-DOC, and 19-OH-DOC respectively. Measurements of these products demonstrated that 11 beta- and 18-hydroxylation was not inhibited whereas 19-hydroxylation was inhibited as manifested by decreased 19-OH-DOC formation (p less than .05). The IC50 of 19-AA was approximately 10(-12) M. The specific inhibition of 19-hydroxylation suggests that the 19-hydroxylase may be an enzyme distinct from the P450 11 beta/18-hydroxylase. This further suggests that 19-nor-DOC biosynthesis may be under independent regulation and may be amendable to specific in vivo inhibition. 相似文献
109.
110.