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49篇 您的检索式:作者名="Xavier Daniel"
    题名 作者 年代 出处 被引量
1塔式大阳能热发电系统定日镜场的设计思考显示文摘化石燃料的有限储量及其燃烧产物对环境的污染,使得可再生能源的研究和开发日益迫切。太阳能热发电技术作为最有可能引起能源革命、实现大功率发电的可再生能源技术得到了广泛的关注。20世纪80年代以来,美国、以色列、西班牙等国相继建立了不同形式的太阳能热发电示范装置,促进了塔式太阳能热发电技术的发展。美国能源部主持的研究结果表明:在大规模发电方面,塔式太阳能热发电将是所有太阳能发电技术中成本最低的一种。据预测,到2020年,其发电成本约为每度5美分,具有很强的市场竞争力。张宏丽 Daniel Favrat Xavier Pelet 2007太阳能2007,,11:9
2塔式系统定日镜场的热经济性优化设计显示文摘采用辐射网格分布,在避免相邻定日镜之间发生机械碰撞的前提下,以接收最多能量和花费最少成本为目标,对塔式太阳能热发电系统中传统跟踪方式下的定日镜场的分布进行了优化设计,优化结果得到了以单位能量成本与投资成本为横、纵坐标的Pareto曲线。与文献中已发表先例相比,所得到定日镜场的单位能量花费较小,具有较好的热经济性,且场的分布均匀合理。同时还分析了获得能量与主要决策变量之间的关系,可为定日镜场的优化设计提供一定的理论依据。张宏丽 Isabelle Juchli Daniel Favrat Xavier Pelet 2009太阳能学报2009,30,1:7
3A demonstration project of Global Alliance against Chronic Respiratory Diseases:Prediction of interactions between air pollution and allergen exposure—the Mobile Airways Sentinel NetworK-Impact of air POLLution on Asthma and Rhinitis approach显示文摘This review analyzes the state and recent progress in the field of information support for pollen allergy sufferers.For decades,information available for the patients and allergologists consisted of pollen counts,which are vital but insufficient.New technology paves the way to substantial increase in amount and diversity of the data.This paper reviews old and newly suggested methods to predict pollen and air pollutant concentrations in the air and proposes an allergy risk concept,which combines the pollen and pollution information and transforms it into a qualitative risk index.This new index is available in an app(Mobile Airways Sentinel NetworK-air)that was developed in the frame of the European Union grant Impact of Air POLLution on sleep,Asthma and Rhinitis(a project of European Institute of Innovation and Technology-Health).On-going transformation of the pollen allergy information support is based on new technological solutions for pollen and air quality monitoring and predictions.The new information-technology and artificial-intelligence-based solutions help to convert this information into easy-to-use services for both medical practitioners and allergy sufferers.Mikhail Sofiev Yuliia Palamarchuk Annabelle Bedard Xavier Basagana Josep M.Anto Rostislav Kouznetsov Rodrigo Delgado Urzua Karl Christian Bergmann Joao A.Fonseca Govert De Vries Michiel Van Erd Isabella Annesi-Maesano Daniel Laune Jean Louis Pepin Ingrid Jullian-Desayes Stephane Zeng Wienczyslawa Czarlewski Jean Bousquet 2020Chinese Medical Journal2020,,13:3
4Disease-Free Survival as a Surrogate for Overall Survival in Adjuvant Trials of Gastric Cancer: A Meta-Analysis显示文摘Koji Oba Xavier Paoletti Steven Alberts Yung-Jue Bang Jacqueline Benedetti Harry Bleiberg Paul Catalano Florian Lordick Stefan Michiels Satoshi Morita Yasuo Ohashi Jean-pierre Pignon Philippe Rougier Mitsuru Sasako Junichi Sakamoto Daniel Sargent Kohei Sh 2013JNCI Journal of the National Cancer Institute2013,,21:3
5Liver fat deposition and mitochondrial dysfunction in morbid obesity:An approach combining metabolomics with liver imaging and histology显示文摘AIM: To explore the usefulness of magnetic resonance imaging(MRI) and spectroscopy(MRS) for assessment of non-alcoholic fat liver disease(NAFLD) as compared with liver histological and metabolomics findings. METHODS: Patients undergoing bariatric surgery following procedures involved in laparoscopic sleeve gastrectomy were recruited as a model of obesityinduced NAFLD in an observational, prospective, singlesite, cross-sectional study with a pre-set duration of 1 year. Relevant data were obtained prospectively and surrogates for inflammation, oxidative stress and lipid and glucose metabolism were obtained through standard laboratory measurements. To provide reliable data from MRI and MRS, novel procedures were designed to limit sampling variability and other sources of error using a 1.5T Signa HDx scanner and protocols acquired from the 3D or 2D Fat SAT FIESTA prescription manager. We used our previously described 1H NMRbased metabolomics assays. Data were obtained immediately before surgery and after a 12-mo period including histology of the liver and measurement of metabolites. Values from 1H NMR spectra obtained after surgery were omitted due to technical limitations.RESULTS: MRI data showed excellent correlation with the concentration of liver triglycerides, other hepatic lipid components and the histological assessment, w h i c h e xc l u d e d t h e p r e s e n c e o f n o n-a l c o h o l i c steatohepatitis(NASH). MRI was sufficient to follow up NAFLD in obese patients undergoing bariatric surgery and data suggest usefulness in other clinical situations. The information provided by MRS replicated that obtained by MRI using the-CH3 peak(0.9 ppm), the-CH2- peak(1.3 ppm, mostly triglyceride) and the-CH=CH- peak(2.2 ppm). No patient depicted NASH. After surgery all patients significantly decreased their body weight and steatosis was virtually absent even in patients with previous severe disease. Improvement was also observed in the serum concentrations of selected variables. The most relevant findings using metabolomics indicate increased levels of triglyceride and monounsaturated fatty acids in severe steatosis but those results were accompanied by a significant depletion of diglycerides, polyunsaturated fatty acids, glucose-6-phosphate and the ATP/AMP ratio. Combined data indicated the coordinated action on mitochondrial fat oxidation and glucose transport activity and may support the consideration of NAFLD as a likely mitochondrial disease. This concept may helpto explain the dissociation between excess lipid storage in adipose tissue and NAFLD and may direct the search for plasma biomarkers and novel therapeutic strategies. A limitation of our study is that data were obtained in a relatively low number of patients.CONCLUSION: MRI is sufficient to stage NAFLD in obese patients and to assess the improvement after bariatric surgery. Other data were superfluous for this purpose.Nahum Calvo Raúl Beltrán-Debón Esther Rodríguez-Gallego Anna Hernández-Aguilera Maria Guirro Roger Mariné-Casadó Lidón Millá Josep M Alegret Fàtima Sabench Daniel del Castillo María Vinaixa Miguelàngel Rodríguez Xavier Correig Roberto García-álvarez Javier A Menendez Jordi Camps Jorge Joven 2015World Journal of Gastroenterology2015,21,24:2
6Evolution of liver transplantation in Europe: Report of the European Liver Transplant Registry显示文摘René Adam Paul McMaster John G. O’Grady Denis Castaing Jurgen L. Klempnauer Neville Jamieson Peter Neuhaus Jan Lerut Mauro Salizzoni Stephen Pollard Ferdinand Muhlbacher Xavier Rogiers Juan Carlos Garcia Valdecasas Joaquin Berenguer Daniel Jaeck Enrique M 2003Liver Transplantation2003,,12:2
7Evolution of liver transplantation in Europe: Report of the European Liver Transplant Registry显示文摘René Adam Paul McMaster John G. O’Grady Denis Castaing Jurgen L. Klempnauer Neville Jamieson Peter Neuhaus Jan Lerut Mauro Salizzoni Stephen Pollard Ferdinand Muhlbacher Xavier Rogiers Juan Carlos Garcia Valdecasas Joaquin Berenguer Daniel Jaeck Enrique M 2003Liver Transplantation2003,,12:2
8From genetics of inflammatory bowel disease towards mechanistic insights显示文摘Daniel B. Graham Ramnik J. Xavier 2013Trends in Immunology2013,,:2
925 Gbps low-voltage hetero-structured silicongermanium waveguide pin photodetectors for monolithic on-chip nanophotonic architectures显示文摘Near-infrared germanium(Ge) photodetectors monolithically integrated on top of silicon-on-insulator substrates are universally regarded as key enablers towards chip-scale nanophotonics, with applications ranging from sensing and health monitoring to object recognition and optical communications. In this work, we report on the highdata-rate performance pin waveguide photodetectors made of a lateral hetero-structured silicon-Ge-silicon(Si-Ge-Si) junction operating under low reverse bias at 1.55 μm. The pin photodetector integration scheme considerably eases device manufacturing and is fully compatible with complementary metal-oxide-semiconductor technology. In particular, the hetero-structured Si-Ge-Si photodetectors show efficiency-bandwidth products of^9 GHz at-1 V and ~30 GHz at-3 V, with a leakage dark current as low as ~150 nA, allowing superior signal detection of high-speed data traffic. A bit-error rate of 10-9 is achieved for conventional 10 Gbps, 20 Gbps, and25 Gbps data rates, yielding optical power sensitivities of-13.85 dBm,-12.70 dBm, and-11.25 dBm, respectively. This demonstration opens up new horizons towards cost-effective Ge pin waveguide photodetectors that combine fast device operation at low voltages with standard semiconductor fabrication processes, as desired for reliable on-chip architectures in next-generation nanophotonics integrated circuits.DANIEL BENEDIKOVIC LéOPOLD VIROT GUY AUBIN FARAH AMAR BERTRAND SZELAG BAYRAM KARAKUS JEAN-MICHEL HARTMANN CARLOS ALONSO-RAMOS XAVIER LE ROUX PAUL CROZAT ERIC CASSAN DELPHINE MARRIS-MORINI CHARLES BAUDOT FRéDéRIC BOEUF JEAN-MARC FéDéLI CHRISTOPHE KOPP LAURENT VIVIEN 2019Photonics Research2019,7,4:2
10Short-term and middle-term evaluation of laparoscopic hepatectomies compared with open hepatectomies: A propensity score matching analysis显示文摘AIM To compare short-term results between laparoscopic hepatectomy and open hepatectomy using a propensity score matching. METHODS A patient in the laparoscopic liver resection(LLR) groupwas randomly matched with another patient in the open liver resection(OLR) group using a 1:1 allocated ratio with the nearest estimated propensity score. Patients of the LLR group without matches were excluded. Matching criteria included age, gender, body mass index, American Society of Anesthesiologists score, potential co-morbidities, hepatopathies, size and number of nodules, preoperative chemotherapy, minor or major liver re-sections. Intraoperative and postoperative data were compared in both groups.RESULTS From January 2012 to January 2015, a total of 241 hepa-tectomies were consecutively performed, of which 169 in the OLR group(70.1%) and 72 in the LLR group(29.9%). The conversion rate was 9.7%(n = 7). The mortality rate was 4.2% in the OLR group and 0% in the LLR group. Prior to and after propensity score matching, there was a statistically significant difference favorable to the LLR group regarding shorter operative times(185 min vs 247.5 min; P = 0.002), less blood loss(100 m L vs 300 m L; P = 0.002), a shorter hospital stay(7 d vs 9 d; P = 0.004), and a significantly lower rate of medical complications(4.3% vs 26.4%; P < 0.001). CONCLUSION Laparoscopic liver resections seem to yield better short-term and mid-term results as compared to open hepatectomies and could well be considered a privileged approach and become the gold standard in carefully selected patients.Xavier Untereiner Audrey Cagnet Riccardo Memeo Vito De Blasi Stylianos Tzedakis Tullio Piardi Francois Severac Didier Mutter Reza Kianmanesh Jacques Mare-scaux Daniele Sommacale Patrick Pessaux 2016World Journal of Gastrointestinal Surgery2016,8,9:2
11Prognostic criteria for postoperative mortality in 170 patients undergoing major right hepatectomy显示文摘BACKGROUND: Postoperative hepatic failure is a dreadful complication after major hepatectomy and carries high morbidity and mortality rates. In this study, we assessed the accuracy of the 50/50 criteria (bilirubin >2.9 mg/dL and international normalized ratio >1.7 on postoperative day 5) and the Mullen criteria (bilirubin peak >7 mg/dL on postoperative days 1-7) in predicting death from hepatic failure in patients undergoing right hepatectomy only. In addition, we identified prognostic factors linked to intra-hospital morbidity and mortality in these patients. METHODS: One hundred seventy consecutive patients underwent major right hepatectomy at a tertiary medical center from 2000 to 2008. Nineteen (11.2%) patients suffered from liver cirrhosis. Univariate and multivariate analyses were performed to identify predictors of intra-hospital mortality, morbidity and death from hepatic failure. RESULTS: The intra-hospital mortality was 6.5% (11/170). Of the six patients who died from hepatic failure, one was positive for the 50/50 criteria, but all six patients were positive for the Mullen criteria. Multivariate analysis showed that male gender, hepatitis C (HCV), hepatocellular carcinoma, postoperative bilirubin >7 mg/dL and ALT<188 U/L on postoperative day 1 were predictive of death from hepatic failure in the postoperative period. Age >65 years, HCV, reoperation, andrenal failure were significant predictors of overall intra-hospital mortality on multivariate analysis. CONCLUSIONS: The Mullen criteria were more accurate than the 50/50 criteria in predicting death from hepatic failure in patients undergoing right hepatectomy. A bilirubin peak >7 mg/dL in the postoperative period, HCV positivity, hepatocellular carcinoma, and an ALT level <188 U/L on postoperative day 1 were associated with death from hepatic failure in our patient population.Filippo Filicori Xavier M Keutgen Matteo Zanello Giorgio Ercolani Salomone Di Saverio Federico Sacchetti Antonio Daniele Pinna Gian Luca Grazi 2012Hepatobiliary & Pancreatic Diseases International2012,11,5:2
12Use of Fenton for the treatment of leachate from composting of different wastes显示文摘Daniel T Xavier F Antoni S 2006Journal of Hazardous Materials2006,136,12:1
13Adsorption of rare earth elements onto bacterial cell walls and its implication for REE sorption onto natural microbial mats显示文摘Yoshio Takahashi Xavier Chatellier Keiko H. Hattori Kenji Kato Danielle Fortin 2005Chemical Geology2005,,1:1
14The value of serologic markers in indeterminate colitis: A prospective follow-up study显示文摘Sofie Joossens Walter Reinisch Séverine Vermeire Boualem Sendid Daniel Poulain Marc Peeters Karel Geboes Xavier Bossuyt Peggy Vandewalle Georg Oberhuber Harald Vogelsang Paul Rutgeerts Jean-Frédéric Colombel 2002Gastroenterology2002,,:1
15A R2R3-MYB gene, AtMYB30, act as a positive regulator of the hypersensitive cell death program in plants in re- sponse to pathogen attack 显示文摘Fabienne Vailleau Xavier Daniel Maurice Tronchet 2002PNAS2002,99,10:1
16Preparation and characterization of methylcellulose from annual cardoon and juvenile eucalyptus显示文摘Ye Daiyong Montane Daniel Farriol Xavier 2005Carbohydrate Polymers2005,61,4:1
17Autohydrolysis of Almond Shells for the Production of Xylo-oligosaccharides :Product Characteristics and Reaction Kinetics 显示文摘Debora N Xavier F Daniel M 2005Ind Eng Chem Res2005,44,20:1
18Synthesis and characterization of carboxymethylcelluloses (CMC) from non-wood fibers I.Accessibility of cellulose fibers and CMC synthesis显示文摘Claudia Barba Daniel Montané Marguerite Rinaudo Xavier Farriol 2002Cellulose (-)2002,,3:1
19Differences between CAFs and their paired NCF from adjacent colonic mucosa reveal functional heterogeneity of CAFs, providing prognostic information显示文摘Mireia Berdiel-Acer Rebeca Sanz-Pamplona Alexandre Calon Daniel Cuadras Antoni Berenguer Xavier Sanjuan Maria José Paules Ramon Salazar Victor Moreno Eduard Batlle Alberto Villanueva David G. Molleví 2014Molecular Oncology2014,,:1
20Designing Energy Efficient Access Points with Wi-Fi直连显示文摘Daniel Camps-Mura Xavier P′erez-Costaa Sebasti`a Sallent-Ribesb 0,,:1
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