Search results for "Feasibility"

Regional passenger transport. A comparison analysis between helicopter and seaplane

2014

Heliports and seaplane bases are relatively small infrastructures able to serve medium or low volumes of regional traffic in poor accessible areas or in zones just located to the next proximity of the urban areas. The spatial extension of the airside is directly connected with the costs of the infrastructure and it is primarily determinate by the type of aircraft that uses the infrastructure and secondarily by the design expected traffic. The helicopter infrastructure is far smaller than that required for airplanes and seaplanes, since the first doesn’t suffers the lateral wind on the approach and landing direction. On the other hand, the rotorcraft suffers operative costs largely high than…

Techno-economic analysis of integrated processes for the treatment and valorisation of neutral coal mine effluents

2020

Abstract The disposal of highly-concentrated neutral coal mine effluents into the environment constitutes a severe threat to the natural ecosystem. This work proposes and compares five novel treatment chains to purify the effluent and recover raw materials. The chains present different combinations of pre-treatment and concentration technologies. In all cases, the solution sent to the concentration step is concentrated up to saturation to recover water and sodium chloride. Concerning the technical performances, the treatment chains are compared in terms of total energy demand and salt recovery. Furthermore, the economic feasibility assessment is performed via a novel global parameter, i.e. …

Derrotabilidad y ponderación. Sobre la posibilidad de revisiones estables

2012

True Exceptions:Defeasibility and Particularism

2012

Sometimes, kinds of cases which do in fact fall under the antecedent of a conditional norm are reckoned recalcitrant. I.e., although they fall under the antecedent of the norm we do not wish to allow the consequence to follow. In such cases, we sometimes say that we are abandoning, or discarding, the norm. We concede, that is, that the alleged norm was wrong (or, if you wish, that it was no norm at all). At other times, however, it is claimed that the norm is a defeasible one. Granted, the case at hand is one of those in which the norm is defeated; but this, it is implied, does not amount to a wholesale abandonment of the norm itself. Being defeasible, the norm somehow survives the impact o…

Sociodemographic Characteristics and Interests of FeverApp Users

2021

The FeverApp Registry is a model registry focusing on pediatric fever using a mobile app to collect data and present recommendations. The recorded interactions can clarify the relationship between user documentation and user information. This initial evaluation regarding features of participants and usage intensity of educational video, information library, and documentation of fever events covers the runtime of FeverApp for the first 14 months. Of the 1592 users, the educational opening video was viewed by 41.5%, the Info Library was viewed by 37.5%, and fever events were documented by 55.5%. In the current sample, the role of a mother (p &lt

Resting-State Functional Magnetic Resonance Imaging for Brain Tumor Surgical Planning: Feasibility in Clinical Setting.

2019

The aim of this study was to introduce resting-state functional magnetic resonance imaging (rest-fMRI) capability for brain tumor surgical planning. rest-fMRI is an emerging functional neuroimaging technique potentially able to provide new insights into brain physiology and to provide useful information regarding brain tumors in preoperative and postoperative settings. rest-fMRI evaluates low-frequency fluctuations in the blood oxygen level–dependent signal while the subject is at rest during magnetic resonance imaging examination. Multiple resting-state networks have been identified, including the somatosensory, language, and visual networks, which are of primary importance for surgical pl…

Quantification of Lung Volume at Different Tidal Volumes and Positive End-Expiratory Pressures in a Porcine Model by Using Retrospective Respiratory …

2008

PURPOSE: This feasibility study in healthy animals should prove the concept that it is possible to quantitatively assess the effects of different ventilatory settings on the lung parenchyma during ongoing ventilation in respiratory gated 4-dimensional (D)-computed tomography (CT). For this purpose, the influence of different tidal volumes and positive end-expiratory pressure (PEEP) on quantitative assessment of lung volumes (LVs) and lung compartments was analyzed. METHODS: Five anesthetized and ventilated (20 breaths/min, inspiratory/expiratory ratio of 1:2) healthy pigs underwent 16-row multidetector CT with retrospective respiratory gating using a noncontact charge-coupled device camera …

Analysis of intrapulmonary O2concentration by MR imaging of inhaled hyperpolarized helium-3

1999

Inhalation of hyperpolarized 3He allows magnetic resonance imaging (MRI) of ventilated airspaces.3He hyperpolarization decays more rapidly when interacting with paramagnetic O2. We describe a method for in vivo determination of intrapulmonary O2 concentrations ([O2]) based on MRI analysis of the fate of measured amounts of inhaled hyperpolarized3He in imaged regions of the lung. Anesthetized pigs underwent controlled normoventilation in a 1.5-T MRI unit. The inspired O2 fraction was varied to achieve different end-tidal [O2] fractions ([Formula: see text]). With the use of a specifically designed applicator,3He (100 ml, 35–45% polarized) was administered at a predefined time within single …

Report summarizing the Work Package 4 of the postdoctoral research

2020

The aim of the postdoctoral research programme ‘ARETE school’ was the modernization of general education in Latvian schools, with a focus on character education, by providing research-grounded basis for modelling the ‘Arete school’ programme and scientifically monitoring its piloting and implementation. This report includes information about the organization of the scientific monitoring of the ‘Arete school’ programme, which, following the conclusions of the preliminary research and the recommendations of the mid-term report, was implemented in two steps: 1) scientific monitoring of ‘Arete catalyst’ pilot programme (a teacher training programme for character education); and 2) scientific mo…

An Integrated Assessment Model on Local Aptitudes for Green-Energy Self-sustainability

2018

The Encyclical Letter Laudato Si of the Holy Father Francis on “Care for our Common Home” holds human society responsible for the achievement of a fairer world, through research into solutions to environmental problems and a moderate and efficient use of nonrenewable resources. It recalls that energy usage is one of the major factors of environmental pressure and shares the crucial questions of current European and international energy policies. In Italy, for the electric sector, energy policy requires the increase of energy production by renewable sources and the development of a transmission grid able to support a diffused and non-programmed production of electrical energy (a smart grid),…