全文获取类型
收费全文 | 223篇 |
免费 | 21篇 |
专业分类
儿科学 | 9篇 |
妇产科学 | 21篇 |
基础医学 | 20篇 |
口腔科学 | 2篇 |
临床医学 | 28篇 |
内科学 | 27篇 |
神经病学 | 30篇 |
特种医学 | 6篇 |
外科学 | 11篇 |
综合类 | 5篇 |
一般理论 | 4篇 |
预防医学 | 52篇 |
药学 | 14篇 |
肿瘤学 | 15篇 |
出版年
2023年 | 4篇 |
2022年 | 2篇 |
2021年 | 6篇 |
2020年 | 7篇 |
2019年 | 12篇 |
2018年 | 8篇 |
2017年 | 6篇 |
2016年 | 8篇 |
2015年 | 3篇 |
2014年 | 11篇 |
2013年 | 15篇 |
2012年 | 28篇 |
2011年 | 25篇 |
2010年 | 8篇 |
2009年 | 9篇 |
2008年 | 15篇 |
2007年 | 9篇 |
2006年 | 9篇 |
2005年 | 10篇 |
2004年 | 12篇 |
2003年 | 12篇 |
2002年 | 10篇 |
2001年 | 1篇 |
2000年 | 1篇 |
1999年 | 3篇 |
1998年 | 3篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1991年 | 1篇 |
1987年 | 1篇 |
1982年 | 1篇 |
排序方式: 共有244条查询结果,搜索用时 968 毫秒
31.
Matthew Mason Catherine Maurice Mairead G. McNamara Minh Thi Tieu Zarnie Lwin Barbara-Ann Millar Cynthia Menard Normand Laperriere Michael Milosevic Eshetu G. Atenafu Warren Mason Caroline Chung 《Journal of neuro-oncology》2017,132(3):463-471
Elevated neutrophil–lymphocyte ratio (NLR) may predict worse outcomes in cancer, including glioblastoma (GBM). This study assessed whether change in NLR during focal radiotherapy and concomitant temozolomide (RT-TMZ) provides further prognostic information. This was a retrospective review of patients treated with RT-TMZ for histologically confirmed GBM from January 2004 to September 2010. Variables assessed included age, ECOG performance status (PS), dexamethasone use and extent of surgery. Hematological results were collected at baseline, during and 4 weeks post RT-TMZ. Kaplan–Meier method was used to calculate overall survival (OS). Multivariable analysis (MVA) assessed for joint effect of covariates on OS and Pearson Correlation Coefficients assessed for association between dexamethasone dose and NLR change. With a median age of 55 (range 18–70), 369 patients were included. Median follow up was 15.1 month (range 1.6–134.6). The OS was 66.1% (95% CI 61.2–70.6) and 31.4 (95% CI 26.8–36.1) at 1 and 2 years, respectively. On univariate analysis, both decrease in NLR post RT-TMZ (HR 0.641, p?<?0.0001) and baseline NLR?<?7.5 (HR 0.628, p?<?0.0001) were associated with longer OS. On MVA decrease in NLR (HR 0.727, 95% CI 0.578–0.915), age (HR 1.025, 95% CI 1.012–1.038), baseline neutrophil (<8) (HR 0.689, 95% CI 0.532–0.891), total TMZ cycles (HR 0.89, 95% CI 0.867–0.913) and PS (HR 0.476, 95% CI 0.332–0.683) were independent predictors of OS. These findings suggest that a decrease in NLR during RT-TMZ, accounting for known prognostic factors, is an independent prognostic factor for survival in GBM. 相似文献
32.
Hamdaoui N Baudoin-Legros M Kelly M Aissat A Moriceau S Vieu DL Colas J Fritsch J Edelman A Planelles G 《British journal of pharmacology》2011,163(4):876-886
BACKGROUND AND PURPOSE
The cystic fibrosis transmembrane conductance regulator (CFTR) is a cAMP-dependent chloride channel in the plasma membrane of epithelia whose mutation is the cause of the genetic disease cystic fibrosis (CF). The most frequent CFTR mutation is deletion of Phe508 and this mutant protein (delF508CFTR) does not readily translocate to the plasma membrane and is rapidly degraded within the cell. We hypothesized that treating epithelial cells with resveratrol, a natural polyphenolic, phyto-ooestrogenic compound from grapes, could modulate both the expression and localization of CFTR.EXPERIMENTAL APPROACH
Cells endogenously expressing CFTR (MDCK1 and CAPAN1 cells) or delF508CFTR (CFPAC1 and airway epithelial cells, deriving from human bronchial biopsies) were treated with resveratrol for 2 or 18 h. The effect of this treatment on CFTR and delF508CFTR expression and localization was evaluated using RT-PCR, Western blot and immunocytochemistry. Halide efflux was measured with a fluorescent dye and with halide-sensitive electrodes. Production of interleukin-8 by these cells was assayed by ELISA.KEY RESULTS
Resveratrol treatment increased CFTR expression or maturation in immunoblotting experiments in MDCK1 cells or in CFPAC1 cells. Indirect immunofluorescence experiments showed a shift of delF508CFTR localization towards the (peri)-membrane area in CFPAC1 cells and in human airway epithelial cells. A cAMP-dependent increase in membrane permeability to halide was detected in resveratrol-treated CFPAC1 cells, and was inhibited by a selective inhibitor of CFTR.CONCLUSION AND IMPLICATIONS
These results show that resveratrol modulated CFTR expression and localization and could rescue cAMP-dependent chloride transport in delF508CFTR cells. 相似文献33.
Curaxins: anticancer compounds that simultaneously suppress NF-κB and activate p53 by targeting FACT
34.
35.
A diet rich in long chain omega-3 fatty acids modulates satiety in overweight and obese volunteers during weight loss 总被引:1,自引:0,他引:1
Long chain omega-3 fatty acids (LC n-3 FA) are considered nutritional factors with a potential to modulate food intake. Thus, the aim of the current study was to determine whether appetite could be affected by LC n-3 FA when included in a calorie-restricted diet to treat overweight or obesity. Appetite was explored in volunteers (31+/-5 years; BMI: 28.3+/-1.5kg/m(2)) during the last 2 weeks of an 8-week energy-restricted balanced diet (weight loss=-5.9+/-3.1%) providing either a low (<260mg/day; n=112) or a high amount (>1300mg/day; n=121) of LC n-3 FA. Erythrocyte membrane fatty acids were measured to detect diet-related changes in fatty acids and a validated visual analogue scale (VAS) was used to measure hunger sensations directly after and 2h after a test dinner. The LC n-3 FA content in erythrocyte membrane was lower in the low LC n-3 FA group (10.5+/-2.5% vs. 12.5+/-2.6%; p<0.001) after the intervention. The VAS assessment revealed lower hunger sensations in the high LC n-3 FA group immediately after the test dinner (fullness: p=0.045) and after 120min (fullness: p=0.008; hunger: p=0.039). Correlation analysis showed a positive relation between n-3FA/n-6 FA ratio in erythrocyte membrane and fullness 2h postprandial (r=0.139; p=0.032). In conclusion, LC n-3 FA intake modulates postprandial satiety in overweight and obese volunteers during weight loss. Further research is needed to investigate whether LC n-3 FA improve compliance to the nutritional treatment of overweight and obesity as well as weight loss maintenance. 相似文献
36.
37.
O'Dwyer V Hogan JL Farah N Kennelly MM Fitzpatrick C Turner MJ 《International journal of gynaecology and obstetrics》2012,116(2):162-164
ObjectiveTo review maternal mortality in a large stand-alone maternity hospital in a European city and to determine whether the increased cesarean rate was associated with an increase in maternal deaths.MethodsThe details of maternal deaths at Coombe Women and Infants University Hospital, Dublin, Ireland, as published in the hospital's Annual Clinical Reports for 1995–2009, were reviewed. Maternal mortality ratio was defined as the number of maternal deaths per 100 000 live births.ResultsOver 15 years, 112 326 women delivered 114 170 infants weighing at least 500 g. The cesarean rate increased from 14.1% in 1995 to 26.5% in 2009 (20.0% overall). The maternal mortality ratio was low at 2.7 per 100 000 live births. There were 2 maternal deaths following cesarean, neither of which was attributable to the operation.ConclusionIn Ireland, a large stand-alone maternity hospital can achieve a low maternal mortality ratio, according to international standards, despite an increase in cesarean rate over the past 2 decades. There was no evidence that the increased cesarean rate had an adverse impact on maternal mortality ratio. 相似文献
38.
39.
Paul Hanly Alan Ó. Céilleachair Mairead Skally Eamonn O’Leary Anthony Staines Kanika Kapur Patricia Fitzpatrick Linda Sharp 《Applied health economics and health policy》2013,11(3):193-203
Background
A societal perspective in economic evaluation necessitates that all resources associated with a disease or intervention should be valued; however, informal care time costs are rarely considered.Objective
We estimated time allocated to care by informal carers of colorectal cancer survivors; and investigated the impact of applying alternative valuation methods to this time.Methods
Colorectal cancer cases (ICD10 C18-C20) diagnosed 6–30 months previously and identified from the National Cancer Registry Ireland were invited to provide details of informal carers. Carers completed a postal questionnaire. Time estimates per week associated with hospital-related and domestic-related care activities were collected for two phases: diagnosis and initial treatment (initial 3 months) and ongoing care (previous 30 days). Seven valuation scenarios, based on variants of the opportunity cost approach (OCA), and the proxy good approach (PGA), were considered. The base-case was OCA with all carer time valued at the average national wage.Results
We received 154 completed questionnaires (response rate = 68 %). Average weekly time allocated to caring was 42.5 h in the diagnosis and initial treatment phase and 16.9 h in the ongoing care phase. Under the base-case, average weekly time costs were €295 (95 % CI 255–344) for hospital-related activities and €630 (95 % CI 543–739) for domestic-related activities in the diagnosis and initial treatment phase and €359 (95 % CI 293–434) in the ongoing care phase. PGA estimates were 23 % below the base-case. Only one alternative scenario (occupation and gender-specific wages for carers in paid work and replacement wages for non-working carers) surpassed base-case costs, and the difference was modest.Conclusions
Overall, significant time is associated with informal caring in colorectal cancer. Different time valuation methods can produce quite different cost estimates. A standardised methodology for estimating informal care costs would facilitate better integration of these into economic evaluations. 相似文献40.
Farah N Stuart B Donnelly V Kennelly MM Turner MJ 《European journal of obstetrics, gynecology, and reproductive biology》2011,157(1):14-17