oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 2 )

2018 ( 1 )

2017 ( 31 )

2016 ( 16 )

Custom range...

Search Results: 1 - 10 of 2049 matches for " Davide Apicella "
All listed articles are free for downloading (OA Articles)
Page 1 /2049
Display every page Item
Microwave Heating of Liquid Foods  [PDF]
Vittorio Romano, Rino Apicella
Engineering (ENG) , 2015, DOI: 10.4236/eng.2015.76026
Abstract: A mathematical model has been formulated to describe the heat transfer in liquid foods flowing in circular ducts, subjected to microwave irradiations. Three types of liquids with different rheological behavior are considered: skim milk (Newtonian), apple sauce and tomato sauce as non-New-tonian fluids. Each one can flow with different velocities but always in laminar way. The temperature profiles have been obtained solving the transient momentum and heat equations by numerical resolution using the Finite Element Method. The generation term due to the microwave heating has been evaluated according to Lambert’s law. Dielectric properties are considered to be temperature dependent.
Comparison between Lambert and Maxwell Approaches in the Modelling of Microwave Heating of Liquid Foods  [PDF]
Rino Apicella, Vittorio Romano
Engineering (ENG) , 2019, DOI: 10.4236/eng.2019.111001
Abstract: Microwave heating of liquid foods in laminar flow through a circular tube has been modeled. In particular, skim milk as a Newtonian fluid and apple sauce and tomato sauce as non-Newtonian fluids have been considered. The temperature profiles have been obtained solving the motion and energy equations in transient regime and Maxwell’s equations in the frequency domain. Numerical resolution of Finite Element Method has been implemented in Comsol Multiphysics. The generation term due to the microwave heating has been evaluated according both to Lambert’s law and Poynting theorem. Finally, a comparison between the two methods has been made in order to check to what extent the results obtained with the simpler Lambert’s law approximation are comparable with those deriving from the exact solution of Maxwell equations. Dielectric properties are considered to be temperature dependent.
Periodontal Bone Substitutes Application Techniques and Cost Evaluation: A Review
Jamaluddin Syed, Najmus Sahar, Raffaella Aversa, Relly Victoria V. Petrescu, Davide Apicella, Erum Khan, Michele Simeone, Florian Ion T. Petrescu and Antonio Apicella
American Journal of Engineering and Applied Sciences , 2016, DOI: DOI : 10.3844/ajeassp.2016.951.961
Abstract: Bioactive Materials have been used since decades but the researches on these materials are still continuing in phase. This material got extra ordinary attention by the scientist and researchers. Bioactive material has ability to bind itself chemically with natural bone tissues. Bioactive materials bring revolution in the field of bone repair and implantology. Bioactive materials have also ability to effect on gene activation of osteoblastic cells that enhance proliferation, resulting rapid bone formation. At last the techniques through which bioactive materials are used to deposits on the implant, to create bond between implants and the bone. Cost evaluation is the very essential part that classifies the use of material commercially.
Anesthesia Management in Case of Carotid Anatomic Variant during Carotid Endarterectomy under General Anesthesia  [PDF]
David Faraoni, Benjamin Mine, Giulia Apicella, Alexandre Joosten
Open Journal of Anesthesiology (OJAnes) , 2012, DOI: 10.4236/ojanes.2012.22005
Abstract: Carotid endarterectomy is an established treatment in the prevention of transient ischemic attack or stroke. Cerebral embolism, thrombosis or hypo-perfusion will lead to a major risk of perioperative thrombotic events. In this case, we report an interesting anesthesia approach for aortic arch anatomic variant management and monitoring.
Some Notes on Modelling the Relationship between the Environment and Institutional Context  [PDF]
Davide Infante, Janna Smirnova
Modern Economy (ME) , 2011, DOI: 10.4236/me.2011.21003
Abstract: Being a real concern of any society, environmental quality has received much attention in economic litera-ture. However, the role that the institutional context plays in environmental issues is still an open question. Since the environment and institutional context are closely interrelated through government regulation, the investigation on the relationship between environment-institutions represents a fruitful terrain for economic research. Our aim is to design research notes to study this relationship using theoretical and empirical ap-proaches, by modelling the institutional context and estimating its impact on the environment. Our notes could also shed fresh light on the issue of environmental policies and their implementation in emerging and developing economies.
Entry and Collusion after Market Opening  [PDF]
Federico Boffa, Davide Vannoni
Theoretical Economics Letters (TEL) , 2012, DOI: 10.4236/tel.2012.23058
Abstract: We analyze a setting typical of industries right after liberalization, or after structural demand and technology changes. An incumbent firm has an exogenous capacity, and a new entrant has to set its capacity level. We find that, in a dynamic context, higher capacity increases the severity of punishment after deviation, thereby favoring the emergence of cartels. The cartel in this case could hurt welfare, not only because of the standard deadweight loss motive, but also because of the cost inefficiency due to high and idle capacity. We conjecture that a competitive arrangement could be both welfare enhancing and profit-maximizing for the incumbent.
Mitigation of Human Exposure to Electromagnetic Fields Using Carbon Foam and Carbon Nanotubes  [PDF]
Davide Micheli, Mario Marchetti
Engineering (ENG) , 2012, DOI: 10.4236/eng.2012.412A118
Abstract:

In recent years there has been increasing concern about the possible consequences on human health from exposure to RF fields produced by wireless telecommunication technologies. In this work the coupling between carbon foam and composite materials made of carbon nanotubes and epoxy-resin allows to build a material able to absorb the electromagnetic field thus reducing its intensity in the environment where the mitigation of electromagnetic field is required. The Frequency range considered is 2 GHz - 3 GHz which is the most common frequency band used in wireless network and microwave oven too. Two different kind of heterogeneous materials are designed, one is a layered radar absorbing material made exclusively of epoxy resin and carbon nanotube in different weight percentage, the others are porous carbon foam where the pores are supposed be filled with carbon nanotubes and epoxy-resin. Both type of materials show interesting absorption properties reaching peak of reflection coefficient between –15 dB and –45 dB for a normally incident plane wave.

The Contribution of EEG to the Diagnosis of Dementia  [PDF]
Davide Vito Moretti
Journal of Biomedical Science and Engineering (JBiSE) , 2014, DOI: 10.4236/jbise.2014.78056
Abstract: Changes induced by cerebrovascular damage (CVD) and amigdalo-hippocampal atrophy (AHC) on brain rhythmicity as?revealed?by scalp electroencephalography (EEG) were evaluated in a cohort of subjects with mild cognitive impairment (MCI) in order to detect different EEG patterns due to the vascular or degenerative impairment. All subjects underwent EEG recording and magnetic resonance imaging (MRI). EEGs were recorded at rest. Relative power was separately computed for delta, theta, alpha1, alpha2, and alpha 3 frequency bands. Increased delta power and decreased alpha2 power were associated with the load of cerebrovascular damage (CVD). Moreover, the theta/alpha 1 ratio could be a reliable index for the estimation of the individual extent of CV damage. No association of vascular damage was observed with alpha3 power. On the other side, moderate hippocampal atrophy was related to an increase of alpha2 and alpha3 frequency power ratio. Our results show that different EEG markers are associated to vascular dementia and Alzheimer’s disease (AD). EEG markers could be expression of different global network pathological changes, helping in differentiation of prodromal AD from vascular demented patients. MCI stated that EEG markers could have a prospective value in differential diagnosis between vascular and degenerative MCI.
Effect of Insulin Glargine on Cardiovascular Risk Analysed by Mean HRV  [PDF]
Marchitto Nicola, Marcinnò Mariaconcetta, Petrucci Alessia, Apicella Giovanni, Dal Maso Serenella Gioia, Raimondi Gianfranco
Health (Health) , 2019, DOI: 10.4236/health.2019.111003
Abstract: Type 2 diabetes mellitus is an insidious disease that is increasingly present in geriatric population [1]. The greatest difficulty is represented by glycaemic control in geriatric patients often not very compliant with diet therapy and drug therapy. A new insulin glargine 300 units/ml formulation seems improve patient compliance due to the lower volume of insulin to be injected and improved glycaemic control over 24 hours. The HRV signal, derived from digital electrocardiographic recording, is the simplest and most immediate analysis that consists in calculating some temporal parameters [2]. HRV is a simple statistics derived from beat-beat intervals of sinus origin expressed as units of time in milliseconds. Data in the literature indicate that a decrease in HRV, measured with time domain analysis, denotes a worse prognosis and/or an increased risk of mortality in patients with heart disease, especially in the elderly ones.
Advertising Effectiveness: An Approach Based on What Consumers Perceive and What Advertisers Need  [PDF]
Macarena Estévez, Davide Fabrizio
Open Journal of Business and Management (OJBM) , 2014, DOI: 10.4236/ojbm.2014.23022
Abstract: This paper examines how advertising effectiveness can be defined and measured. We propose a 3D-effectiveness key performance indicator involving the weighted prominence of three factors: recall, brand image and buying intention. In this way, the indicator proposed improves the metrics of this type known in the Spanish market. Using experimental data about 20 fixed brands and other 12 variable brands collected along the 52 weeks of a year, we find that this indicator reflects consumer’s perceptions and that it fits advertising company’s needs. We have developed a web tool to provide the market with a benchmark measure of advertising effectiveness. Finally, we discuss future research lines.
Page 1 /2049
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.