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Simulation, Construction and Characterization of a Piezoelectric Transducer Using Rexolite as Acoustic Matching

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材料科学与工程（中英文B版） 2013年第4期3卷 208-213页

作者： Israel Sanchez Dominguez pedro Acevedo Contla manuel Recuero Lopez Demetrio Fabian Garcia Nocetti Polytechnic University of Madrid School of Industrial Engineering Madrid Spain National Autonomous University of Mexico lnstitutito Research in Applied Mathematics and Systems Mexico City Mexico

Electric Modulus Analysis of Carbon Black/Copolymer Composite Materials

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Materials Sciences and Applications 2011年第10期2卷 1421-1426页

作者： Mohamed El Hasnaoui manuel pedro Fernanades Graca Mohammed Essaid Achour Luis Cadillon Costa Laboratoire LASTID Departement de PhysiqueFaculte des SciencesUniversite Ibn TofailKenitraMorocco I3N and Physics Department University of AveiroAveiroPortugal

We have investigated the electrical properties of carbon black (CB) loaded in ethylene butylacrylate copolymer composite (EBA) in the frequency range between 102 and 104 Hz and temperature range between 153 and 353 K. The frequency dependence of electrical data that have been analyzed in two frameworks: the electrical modulus formalism with the Kohlrausch-Williams-Watts stretched exponential function (KWW) and the electrical conductivity by using the Jonscher’s power law in the frequency domain. The stretching exponent βKWW and n are found to be temperature independent for all CB fractions and to be decreased when the CB volume concentrations loaded in copolymer matrix increases. It is found that the activation energy obtained by the modulus method is in good agreement with that obtained by the DC conductivity in the power law which is independent on the CB contents that exist in the copolymer matrix, suggesting that these particles do not interact significantly with the chain segments of the macromolecules in the EBA copolymer.

关键词： Electrical Modulus Polymer Matrix Nanocomposites Conducting Particles

Bayesian Estimation in Dam Monitoring Networks

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Journal of Civil Engineering and Architecture 2011年第2期5卷 185-190页

作者： Joo manuel Martins Casaca pedro Jorge Bele Mateus Joeo de Jesus Isidoro Coelho National Laboratoty for Civil Engineering Lisbon 1700-066 Portugal Faculty of Science University of Lisbon Lisboa 1749-016 Portugal

A Bayesian estimator with informative prior distributions （a multi-normal and an inverted gamma distribution）, adequate to displacement estimation at dam displacement monitoring networks, is presented. The hyper-parameters of the prior distributions are obtained by Bayesian empirical methods with non-informative meta-priors. The performances of the Bayes estimator and the classical generalized lest squares estimator are compared using two measurements of the horizontal monitoring network of a concrete gravity dam： the Penha Garcia dam （Portugal）. In order to test the robustness of the two estimators, a gross error is added to one of the measured horizontal directions： the Bayes estimator proves to be significantly more robust than the classic maximum likelihood estimator.

关键词： Bayes estimator hyper-parameter parametric elicitation prior distribution.

Effectiveness of Mesotherapy on Temporomandibular Joint Disorders

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Journal of Physical Science and Application 2015年第4期5卷 249-254页

作者： Andre pedro Oliveira Cruz Ana Filipa Rodrigues das Neves Isabel Ramires manuel Mendonca Servico de Medicina Fisica e de Reabilitacao Hospital de S. Jose Centro Hospitalar de Lisboa Central Lisboa 1150-199 Portugal

TMJDs （Temporomandibular joint disorders） are a common pathology but best treatment remains unclear. The goal of this study was to evaluate the effectiveness of mesotherapy on TMJD. We conducted a case review of all TMJD patients treated since 2006 with mesotherapy procedures only and using a cocktail of drugs composing of lidocaine, piroxicam and pentoxifylline. Patients were treated every 15 days until symptomatic relief was achieved and thereafter every two months. Main outcome was complete symptomatic relief, and associated factors were analysed. 27 patients were included. Complete pain relief was achieved in 26. The necessary number of procedures to get pain relief ranged from 1 to 6 （median of 1） and the total number of treatments from 1 to 40 （median of 11）. 19 patients had other painful complains mainly related with anxiety disorders. A weak correlation （r = 0.357; p = 0.05） between anxiety disorders and the required months of treatments was found. Mesotherapy is a valuable option on pain relief in a temporomandibular pain syndrome with none of the systemic effects of oral medication. Anxiety may have a role on the aetiology and therapeutic success highlights the holistic approach of these patients. Future comparative studies are necessary.

关键词： TMJDs (Temporomandibular joint disorders) mesotherapy pain.

Short-Term Effects of Ozone on Mortality： Comparative Analysis of Urban and Suburban Zones in Madrid （Spain）

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Journal of Health Science 2018年第3期6卷 183-199页

作者： Estrella López pedro Salvador Begona Artinano Saul Garcia Rosalía Fernández manuel Posada Institute of Rare Diseases Research Instituto de Salud Carlos III & Centre for Biomedical Network Research on Rare Diseases (CIBERER) Avda. Monforte de Lemos Madrid 5 28029 Spain Atmospheric Pollution Division Centre for Energy Environment and Technology Research (CIEMAT) Avenue Complutense Madrid 40 28040 Spain Department of Atmospheric Pollution National Centre of Environmental Health Instituto de Salud Carlos III (ISCIII) road Majadahonda-Pozuelo km. 2.200 Majadahonda Madrid 28220 Spain

A large number of papers published in the last decades are related to the effect of ozone exposure on mortality worldwide. Several studies have been performed to investigate the effect of ozone on mortality in Madrid （Spain）, but the findings of these local reports were focused only on the Madrid city. The association of daily concentrations of ozone with daily mortality was investigated using autoregressive Poisson regression models. This study explores the effects of ozone on all causes except accidents, cardiovascular and respiratory short-term mortality in two areas of the Madrid region： an urban area constituted by the Madrid municipality and an industrial sub-urban area surrounding the city. Using three years of daily data （2003-2005）, it was analyzed the all-ages populations and the over-64 age groups. The average ozone concentrations over the study period were 54.07 ± 27.17 μg/m3 in the Madrid municipality and 70.09 ± 32.96 μg/m3 in the sub-urban municipalities surrounding the city. Our results in the all-ages group indicated that 0.69% of all causes except accidents, 1.15% of cardiovascular and 1.56% of respiratory daily deaths, respectively, could be attributed to exposure to ozone in the Madrid city, whereas 11.69% of daily respiratory deaths were attributable to ozone exposure in the Madrid sub-urban surroundings. Our results show a clear association between mortality and ozone exposure. The spatial heterogeneity of ozone effects on short-term mortality throughout the Madrid region may have implications for local environmental policies and also for social and health services planning.

关键词： Ozone mortality cardiovascular respiratory Madrid city sub-urban areas.

A Review of the Production Cycle of Titanium Dioxide Pigment

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Materials Sciences and Applications 2014年第7期5卷 441-458页

作者： manuel Jesús Gázquez Juan pedro Bolívar Rafael Garcia-Tenorio Federico Vaca Departamento de Física Aplicada Universidad de HuelvaHuelvaEspana Departamento de Química Proyecto PrometeoUniversidad Técnicas Particular de Loja(UTPL)LojaEcuador Departamento de Física Aplicada II Universidad de SevillaSevillaEspaña

Titanium is a very important element for several industrial applications, being one of the ninth most abundant elements in the Earth’s crust (0.63% wt). In this work it will discuss the different mining and industrial activities involved in the production of titanium dioxide. The first step analyzed will treat about the beneficiation mining process of titanium mineral, and secondly, it will discuss the two main processes of the TiO2 manufacturing (sulphate and chloride routes). In addition, we will show different uses of the titanium dioxide pigment as filler in paper, plastics and rubber industries and as flux in glass manufacture, etc. Finally, we will show that the old wastes are currently called co-products since they were valorized, being commercialized by the Spanish industry of TiO2 production in different fields such as agriculture, civil engineering, or cement manufacturing.

关键词： Titanium Minerals Titanium Dioxide Pigment Properties and Uses of Tio2 Valorization of Co-Products

Machine perfusion and the prevention of ischemic type biliary lesions following liver transplant:What is the evidence?

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World Journal of Gastroenterology 2023年第20期29卷 3066-3083页

作者： manuel Durán Rafael Calleja Angus Hann George Clarke Ruben Ciria Anisa Nutu Rebeca Sanabria-Mateos María Dolores Ayllón pedro López-Cillero Hynek Mergental Javier Briceño M Thamara P R Perera Department of Liver Transplantation Reina Sofía University HospitalCórdoba 14004Spain The Liver Unit Queen Elizabeth Hospital BirminghamBirmingham B152THUnited Kingdom Centre for Liver and Gastrointestinal Research Institute of Immunology and ImmunotherapyUniversity of BirminghamBirmingham B152THUnited Kingdom

The widespread uptake of different machine perfusion(MP)strategies for liver transplant has been driven by an effort to minimize graft *** to the cholangiocytes during the liver donation,preservation,or early posttransplant period may result in stricturing of the biliary tree and inadequate biliary *** problem continues to trouble clinicians,and may have catastrophic consequences for the graft and *** injury,as a result of compromised hepatic artery flow,is a well-known cause of biliary strictures,sepsis,and graft ***,very similar lesions can appear with a patent hepatic artery and these are known as ischemic type biliary lesions(ITBL)that are attributed to microcirculatory dysfunction rather than main hepatic arterial *** the warm and cold ischemic period duration appear to influence the onset of *** of the commonly used MP techniques deliver oxygen to the graft cells,and therefore may minimize the cholangiocyte injury and subsequently reduce the incidence of *** clinical experience and published evidence grows for these modalities,the impact they have on ITBL rates is important to *** this review,the evidence for the three commonly used MP strategies(abdominal normothermic regional perfusion[A-NRP],hypothermic oxygenated perfusion[HOPE],and normothermic machine perfusion[NMP])for ITBL prevention has been critically *** with ITBL definitions used in trials,coupled with variations in techniques of MP,make interpretation ***,the evidence suggests that both HOPE and A-NRP prevent ITBL in donated after circulatory death grafts compared to cold *** evidence for ITBL prevention in donor after brain death grafts with any MP technique is weak.

关键词： Liver transplant Ischemic type biliary lesions Hypothermic oxygenated machine perfusion Normothermic machine perfusion Abdominal normothermic regional perfusion Donation after circulatory death

Correlation between Transport and Occurrence of Dengue Cases in Bahia

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通讯和计算机（中英文版） 2014年第3期11卷 217-221页

作者： Hugo Saba Pereira cardoso Jose Garcia Vivas Miranda Eduardo manuel de Freitas Jorge Marcelo A.Moret Department of Exact Sciences and Earth University of the State of Bahia Salvador 40000-000 Brazil Institute of Physics Federal University of Bahia Salvador 40000-000 Brazil Modelagem Computacional SENAI Cimatec Salvador 40000-000 Brazil

Strategies to reduce hepatitis C virus recurrence after liver transplantation

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World Journal of Hepatology 2013年第5期5卷 237-250页

作者： Ruben Ciria María Pleguezuelo Shirin Elizabeth Khorsandi Diego Davila Abid Suddle Hector Vilca-Melendez Sebastian Rufian manuel de la Mata Javier Briceo pedro López Cillero Nigel Heaton Institute of Liver Studies King’s College HospitalLondon SE5 9RSUnited Kingdom Unit of Hepatology and Liver Transplantation University Hospital Reina Sofías/n 1400 CórdobaSpain Unit of Hepatobiliary Surgery and Liver Transplantation University Hospital Reina Sofías/n 1400 CórdobaSpain

Hepatitis C virus (HCV) is a major health problem that leads to chronic hepatitis, cirrhosis and hepatocellular carcinoma, being the most frequent indication for liver transplantation in several countries. Unfortunately, HCV re-infects the liver graft almost invariably following reperfusion, with an accelerated history of recurrence, leading to 10%-30% of patients progressing to cirrhosis within 5 years of transplantation. In this sense, some groups have even advocated for not retransplanting this patients, as lower patient and graftoutcomes have been reported. However, the management of HCV recurrence is being optimized and several strategies to reduce post-transplant recurrence could improve outcomes, decrease the rate of re-transplantation and optimize the use of available grafts. Three moments may be the focus of potential actions in order to decrease the impact of viral recurrence: the pretransplant moment, the transplant environment and the post-transplant management. In the pre-transplant setting, it is not well established if reducing the pre transplant viral load affects the risk for HCV progression after transplant. Obviously, antiviral treatment can render the patient HCV RNA negative post transplant but the long-term benefit has not yet been fully established to justify the cost and clinical risk. In the transplant moment, factors as donor age, cold ischemia time, graft steatosis and ischemia/reperfusion injury may lead to a higher and more aggressive viral recurrence. After the transplant, discussion about immunosuppression and the moment to start the treatment (prophylactic, pre-emptive or once-confirmed) together with new antiviral drugs are of interest. This review aims to help clinicians have a global overview of posttransplant HCV recurrence and strategies to reduce its impact on our patients.

关键词： Hepatitis C virus Recurrence Liver Trans- plantation Outcomes