61 results for “valve”

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Research ArticleOpen accessIn the abstractAn Assessment of the Electric Power Quality and Electrical Installation Impacts on Medical Electrical Equipment Operations at Health Care FacilitiesMário César Giacco Ramos, Carlos Márcio Vieira TahanProblem statement: Medical electrical equipments at health care facilities presented malfunction and wrong medical information due to poor electric power quality and to inadequate electrical Installations. Some equipment such as X-ray, computerized axial tomography and magnetic resonance imaging are considered as polluting ones due to their high amount of harmonics and voltage transients produced on the electrical power supply when … …American Journal of Applied Sciences, Vol. 6, Issue 4 · 30 Apr 2009 · 7,517 accessesView PDF Cite

Research ArticleOpen accessIn the abstractFlow Simulation in Engine Cylinder with Spring MeshM.H. Shojaeefard, A.R. NoorpoorThis investigation presents results from numerical simulation of the air flow in Spark Ignition Engine (SI engine) cylinder. Accurate modeling of the flow in cylinder is a key part of successful combustion simulation. The most usual numerical method in Computational Fluid Dynamics (CFD) is finite volume. In this investigation an important, common fluid flow patterns in CFD simulations, namely, Tumble … …American Journal of Applied Sciences, Vol. 5, Issue 10 · 31 Oct 2008 · 7,065 accessesView PDF Cite

Research ArticleOpen accessIn the abstractAnomalies in a Fetus Exposed to Methotrexate in the First TrimesterLandon B. Lorenz, Eric J. KnudtsonThe increasing use of methotrexate for multiple indications in reproductive age women will likely lead to more frequent incidence of fetal exposure. Methotrexate is sometimes used for medical termination of first trimester pregnancy in combination with misoprostol. Teratogenesis in women exposed to low-dose methotrexate used for treatment of rheumatic conditions has been reported, but it has also been suggested that … …American Journal of Pharmacology and Toxicology, Vol. 2, Issue 4 · 31 Dec 2007 · 7,656 accessesView PDF Cite

Research ArticleOpen accessIn the abstractReview of Pasteurella Multocida Infections over a Twelve-Year Period in a Tertiary Care HospitalAthanasia Christidou, Sofia Maraki, Zoe Gitti, Yiannis TselentisThe aim of this study was to present the epidemiological, clinical and microbiological data, as well as the management and the outcome of 13 patients with documented Pasteurella multocida infections, diagnosed in the University hospital of Crete, Greece, between 1993 and 2004. Most patients (62%) were >70 years of age. Respiratory tract infections were most commonly encountered (61.5%), followed by … …American Journal of Infectious Diseases, Vol. 1, Issue 2 · 30 Jun 2005 · 6,998 accessesView PDF Cite

Case ReportOpen accessIn the abstractImmunе-Mediated Myocarditis Associated with Leptospirosis in 6 Years Old Labrador RetrieverOleinikov Dmitrii, Letunoskaja AnnaAbout 6 years old, male Labrador retriever was presented for 10 days long weakness and fatigue. After diagnostic examinations, a preliminary diagnosis of Leptospirosis was suggested. Cardiologist consultation was advised. At admission, the dog was depressed, the visible mucosa was pale and capillary refilling time was slowed. Weak systolic murmur and rhythm disturbances were auscultated. Thoracic radiography revealed the accented … …American Journal of Animal and Veterinary Sciences, Vol. 13, Issue 3 · 4 Oct 2018 · 7,093 accessesView PDF Cite

InvestigationOpen accessIn the abstractSimulation and Experimental Analysis of a Demonstrative Solar Heating and Cooling Plant Installed in Naples (Italy)Annamaria Buonomano, Francesco Calise, Massimo Dentice d'Accadia et al.In this study the model of a Solar Heating and Cooling (SHC) system and its experimental setup are presented. The SHC system under investigation is a demonstration plant installed in Naples, based on flat plate solar collectors and a single-stage LiBr-H2O absorption chiller. In addition, two vertical tanks are installed as storage system. The balance of system includes: A cooling … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 4 · 10 Oct 2016 · 7,809 accessesView PDF Cite

Research ArticleOpen accessIn the abstractDynamic Simulation and Optimum Operation Strategy of a Trigeneration System Serving a HospitalFrancesco Calise, Massimo Dentice d'Accadia, Luigi Libertini et al.This paper presents a numerical analysis of a trigeneration system in a hospital, aiming at determining the cost-optimal operating strategy as a function of the energy demands to be matched. The system includes: A natural gas fired reciprocating engine, heat exchangers for waste-heat recovery, a single-stage LiBr-H2O Absorption Chiller (ACH), a cooling tower, pumps, a backup boiler, a backup vapour-compression … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 4 · 29 Aug 2016 · 8,183 accessesView PDF Cite

Research ArticleOpen accessIn the abstractImpact of Acute Bronchiolitis on Cardiac Functions and Serum microRNA-122 and 499Mona Abd El-Gelel Mohamed, Khalid Mahmoud ZayedBronchiolitis is an acute inflammatory injury of the bronchioles that is usually caused by a viral infection, most commonly Respiratory Syncytial Virus (RSV). This study aimed to verify the direct injurious effect of acute bronchiolitis on the myocardium and serum level of microRNA-122 and 499 (miR-122 and miR-499) of infected infants. Serum lactate dehydrogenase (LDH), creatine phosphokinase-isoenzyme MB (CK-MB) and … …American Journal of Infectious Diseases, Vol. 12, Issue 1 · 26 Jan 2016 · 7,259 accessesView PDF Cite

Research ArticleOpen accessIn the abstractDesign and Dynamic Simulation of a Combined System Integration Concentrating Photovoltaic/Thermal Solar Collectors and Organic Rankine CycleFrancesco Calise, Massimo Dentice d'Accadia, Maria Vicidomini et al.This study presents the design of a novel ultra-high efficient solar power system. The system is equipped with a concentrating PhotoVoltaic/Thermal (CPVT) solar collectors bottomed by an Organic Rankine Cycle (ORC). The basic idea is to use a high temperature CPVT device producing simultaneously electricity and hot diathermic oil. Then, this hot fluid is used to supply heat to the … …American Journal of Engineering and Applied Sciences, Vol. 8, Issue 1 · 17 Apr 2015 · 8,659 accessesView PDF Cite

Research ArticleOpen accessIn the abstractModeling of Piezoelectric Actuators Based on Bayesian Regularization Back Propagation Neural NetworkWen Wang, Zhu Zhu, Yanding Wei, Zichen ChenProblem statement: Piezoelectric actuator is a kind of key driving components for micropositioning stages, micropumps, micro valves, micro gripper and so on in the fields of micro/nano technology such as integrated circuit manufacturing, precision instruments, ultra precision fabrication, biomedical manipulation. It has lots of advantages including high stiffness, fast response times, less heat generating, low power consumption and large force … …Current Research in Nanotechnology, Vol. 1, Issue 1 · 15 Jun 2011 · 7,064 accessesView PDF Cite