全文获取类型
收费全文 | 572篇 |
免费 | 35篇 |
国内免费 | 3篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 25篇 |
妇产科学 | 27篇 |
基础医学 | 81篇 |
口腔科学 | 6篇 |
临床医学 | 64篇 |
内科学 | 145篇 |
皮肤病学 | 13篇 |
神经病学 | 53篇 |
特种医学 | 14篇 |
外科学 | 40篇 |
综合类 | 3篇 |
预防医学 | 48篇 |
眼科学 | 11篇 |
药学 | 36篇 |
中国医学 | 1篇 |
肿瘤学 | 41篇 |
出版年
2023年 | 3篇 |
2022年 | 14篇 |
2021年 | 40篇 |
2020年 | 20篇 |
2019年 | 23篇 |
2018年 | 22篇 |
2017年 | 14篇 |
2016年 | 19篇 |
2015年 | 13篇 |
2014年 | 21篇 |
2013年 | 33篇 |
2012年 | 35篇 |
2011年 | 55篇 |
2010年 | 25篇 |
2009年 | 33篇 |
2008年 | 42篇 |
2007年 | 41篇 |
2006年 | 30篇 |
2005年 | 23篇 |
2004年 | 27篇 |
2003年 | 21篇 |
2002年 | 29篇 |
2001年 | 2篇 |
2000年 | 4篇 |
1999年 | 2篇 |
1998年 | 4篇 |
1997年 | 5篇 |
1996年 | 1篇 |
1995年 | 3篇 |
1992年 | 1篇 |
1990年 | 1篇 |
1984年 | 2篇 |
1982年 | 1篇 |
1973年 | 1篇 |
排序方式: 共有610条查询结果,搜索用时 46 毫秒
1.
2.
Gerassimos J Mantzaris Kalliopi Petraki Michael Sfakianakis Emmanuel Archavlis Angeliki Christidou Helen Chadio-Iordanides George Triadaphyllou 《Clinical gastroenterology and hepatology》2003,1(2):122-128
BACKGROUND & AIMS: To compare the efficacy of controlled-release budesonide capsules with that of mesalamine for maintaining remission and improving quality of life (QOL) in patients with steroid-dependent Crohn's disease. METHODS: Fifty-seven patients (25 men; mean age, 32 +/- 10.1 yr) with quiescent steroid-dependent Crohn's ileitis, ileocolitis, or colitis (Crohn's disease activity index <150) entered a prospective, investigator-blind trial. Patients were eligible for treatment with azathioprine but had not consented or had developed side effects. Patients were randomized to receive budesonide 6 mg/day (n = 29) or mesalamine 1 g 3 times/day (n = 28). Follow-up assessments were made every 2 months for up to 1 year or until relapse. At each visit, quality of life (QOL) was assessed using the Inflammatory Bowel Disease Questionnaire (IBDQ). RESULTS: There were no significant differences in baseline clinical characteristics between the study groups. The 1-year relapse rate was significantly lower in the budesonide group than in the mesalamine group (55% vs. 82%; 95% confidence interval, 12.4%-41%; P = 0.045). Patients assigned to budesonide also remained in remission longer (241 +/- 114 days vs. 147 +/- 117 days; 95% confidence interval, 32.7-155.3 days; P = 0.003). Compared with mesalamine, budesonide treatment also was associated with a better QOL throughout the study (mean total IBDQ scores 165 +/- 36 vs. 182 +/- 28, respectively; 95% confidence interval, -0.4 to 34.4, P = 0.0001). This advantage was confirmed in patients' self-assessed QOL scores. CONCLUSIONS: Over a 1-year period, controlled-release budesonide was significantly more effective than mesalamine for maintaining remission and improving the QOL of patients with steroid-dependent Crohn's disease. 相似文献
3.
Alexandros GERAKIS Angeliki BARBATSI Sophia SARANTI Theodora STROGYLOU Dimitrios VALIS 《Nephrology (Carlton, Vic.)》1998,4(5-6):403-406
SUMMARY: We studied the effect of haemodialysis on the serum levels of tumour markers in 78 patients, 49 men and 29 women with a mean age of 61 ± 2 years, who had been undergoing haemodialysis for 39 ± 10 months. No patient had any clinical evidence of malignancy. Serum values of carcinoembryonic antigen (CEA), alpha-fetoprotein (AFP), squamous-cell-carcinoma-related antigen (SCC), neuron-specific enolase (NSE), tissue polypeptide antigen (TPA), CA 15-3, CA 19–9, and among males prostate-specific antigen (PSA) were determined before and after dialysis. Postdialysis values, after being corrected for haemoconcentration, were compared with predialysis values. A significant increase of 32% was observed in NSE levels ( P <0.001) and of 21% in CA 15-3 ( P <0.001) after haemodialysis. A lesser, but still statistically significant, increase (8-12%) was observed in SCC, AFP and CEA levels ( P <0.05), while the values of the remaining three markers remained unchanged. In conclusion, an increase in some tumour markers was found in our patients after dialysis, a finding which requires further investigation. 相似文献
4.
5.
Supernumerary marker chromosomes (SMCs) in Turner syndrome are mostly derived from the Y chromosome 总被引:2,自引:0,他引:2
Philippos C. Patsalis Michael I. Hadjimarcou Voula Velissariou Sophia Kitsiou-Tzeli Christina Zera Maria Syrrou Evangelia Lyberatou Aspasia Tsezou Angeliki Galla Nicos Skordis 《Clinical genetics》1997,51(3):184-190
DNA and FISH (fluorescence in situ hybridization) analysis were carried out in 12 patients with stigmata of Turner syndrome to determine whether the Supernumerary M arker C hromosome (SMC) found cytogenetically in each of these patients was derived from the Y chromosome. The presence of a Y chromosome in these patients may predispose them to develop gonadoblastoma. PCR-Southern blot analysis, followed by FISH, was used to detect the presence of Y chromosome material. The S ex determining R egion Y (SRY), T estis S pecific P rotein Y -encoded (TSPY) and Y -chromosome R NA R ecognition M otif (YRRM) genes, which map at Yp11.31, Yp11.1–11.2 and Yp11.2/Yq11.21–11.23, respectively, were selected as markers, because they span the whole Y chromosome, and more importantly, they are considered to be involved in the development of gonadoblastoma. It was shown that in 12 patients, all of whom had an SMC, the SMC of 11 was derived from the Y chromosome. Furthermore, the presence of the SRY, TSPY and YRRM gene sequences was determined and FISH analysis confirmed the Y origin of the SMCs. The methodology described in this report is a rapid, reliable and sensitive approach which may be easily applied to determine the Y origin of an SMC carried in Turner syndrome. The identification of an SMC is important for the clinical management and prognostic counseling of these patients with Turner syndrome. 相似文献
6.
Detection of genetic alterations in primary bladder carcinoma with dual-color and multiplex fluorescence in situ hybridization 总被引:4,自引:0,他引:4
Stamouli MI Panani AD Ferti AD Petraki C Oliver RT Raptis SA Young BD 《Cancer Genetics and Cytogenetics》2004,149(2):107-113
Cytogenetic studies of bladder cancer have shown several nonrandom aberrations. Numerical aberrations of both sex chromosomes were investigated in 32 primary bladder tumors with bicolor fluorescence in situ hybridization (FISH). Loss of chromosome Y and overrepresentation of chromosome X were observed in subgroups of male patients. Chromosome X was represented normally in female patients. Two of the above primary bladder tumors, a transitional cell carcinoma (TCC) and an adenocarcinoma, were further analyzed with both multiplex FISH (24-color M-FISH) and G-banding. Both cases exhibited 1) common breakpoints on 5q11 approximately q12 and 15q24; 2) involvement of the pericentromeric area of chromosome 13; 3) structural abnormalities of chromosomes 8 and 17, with loss of material on the short arm; 4) structural abnormalities involving chromosome 11; and 5) loss of chromosome Y. The TCC case also exhibited structural abnormalities of chromosome 9, resulting in loss of 9q. The combined G-banding and M-FISH findings could help reveal regions potentially involved in bladder tumorigenesis. 相似文献
7.
8.
Helen Platokouki Sophie Aronis Angeliki Mitsika Demetrios Keramidas Efstathios Harokopos 《Pediatrics international》1998,40(4):381-384
Abstract The case of a 7-year-old girl with a 2 year history of easy bruising associated with thrombocytopenia is reported. On admission she presented with ecchymoses, abdominal distention and splenomegaly. Hemostasis investigation revealed a consumption coagulopathy. Several radiological studies failed to confirm the diagnosis of diffuse splenic and visceral hemangiomatosis, which was eventually estasblished by an explorative laparotomy. Platelet count and the other coagulation abnormalities progressively returned to normal after splenectomy, although the remaining hemangiomas were extensive. 相似文献
9.
Nocturnal activation of melatonin receptor type 1 signaling modulates diurnal insulin sensitivity via regulation of PI3K activity 下载免费PDF全文
10.