Search results for "HVA"
showing 10 items of 78 documents
Monitoring and energy performance assessment of an advanced DEC HVAC system in Morocco
2017
This work addresses the energy performance of a solar Desiccant and Evaporative Cooling (DEC) system working with the freescoo technology. Freescoo is an innovative solar air conditioning concept for ventilation, cooling, dehumidification and heating of buildings in residential and tertiary sectors. The monitoring of the system started in November 2016 and will continue until the end of 2017. Energy performances are evaluated according to the monitoring procedure for solar cooling systems developed by the Task 38 and 48 of the International Energy Agency experts. The analysis based on monitoring data shows that, for typical operating conditions in cooling mode, the electricity saving in com…
Programming distributed applications with symbolic reasoning on WSNs
2015
Programming Wireless Sensor Networks (WSNs) is a complex task for which existing approaches adopt rigid architectures that are only suitable for specific application fields. In previous papers we introduced a programming methodology and a lightweight middleware based on high-level programming and executable code exchange for distributed processing on WSNs. In this paper, we show how high-level programming can be effectively used on WSNs to implement symbolic reasoning. In order to prove the feasibility of our approach, we present a Fuzzy Logic system where the value updates and the rule evaluations are performed in a distributed way. Through the proposed methodology, we discuss the developm…
Testing steady-state analysis of single-ring and square pressure infiltrometer data
2016
Testing reliability of the saturated soil hydraulic conductivity, Ks, estimated by applying the steady-state single-ring (SR) model to the quasi steady-state infiltration rates obtained with a single-ring pressure infiltrometer (PI) increases confidence in the estimated Ks values. Determining a means to estimate Ks from infiltration data collected with a square infiltrometer allows the use of sources of different shapes. Using numerically simulated infiltration rates for six homogeneous soils ranging in texture from sand to silty clay loam, this investigation suggested an overall good performance of the SR model, with estimated Ks values differing by not more than 25% from the true values f…
Testing an adapted beerkan infiltration run for a hydrologically relevant soil hydraulic characterization
2020
Abstract Literature raises doubts about the usability of infiltrometer methods to characterize soils in a hydrological perspective since these methods often yield excessively high infiltration rates or saturated soil hydraulic conductivity, Ks, values. For a loam (AR) and a silty-clay (RO) soil, beerkan infiltration runs were adapted in the perspective to obtain usable soil data to predict rainfall partition into infiltration and rainfall excess. In particular, the initially nearly dry soil was sampled with different water volumes (15 or 30) and heights of water application (low, L, 0.03 m, and high, H, 1.5 m), and the BEST-steady algorithm was applied to determine sorptivity, S, and Ks. Th…
Superconducting Microwave Cavity Made of Bulk MgB2
2006
We report the successful manufacture and characterization of a microwave resonant cylindrical cavity made of bulk MgB2 superconductor (Tc = 38.5 K), which has been produced by the Reactive Liquid Mg Infiltration technique. The quality factor of the cavity for the TE011 mode, resonating at 9.79 GHz, has been measured as a function of the temperature. At T = 4.2 K, the unloaded quality factor is 2.2x10^5; it remains of the order of 10^5 up to T ~ 30 K. We discuss the potential performance improvements of microwave cavities built from bulk MgB2 materials produced by reactive liquid Mg infiltration.
Like barn leker mest, men er det best? : Integrering av enslige mindreårige gjennom fritidsaktiviteter
2016
Master thesis development management - University of Agder 2016
Seasonal changes of the infiltration rates in a Mediterranean scrubland on limestone
1997
To investigate the seasonal changes of infiltration rates, measurements by means of simulated rainfall experiments and cylinder infiltrometer were done in a small E–W oriented watershed in Southeast Spain. Data were collected during both the wet seasons (autumn, winter and spring) and the dry season (summer). Infiltration rates were very high in summer, when direct surface runoff is very low. During the wet seasons, the infiltration rates were lower due to the increase in soil moisture. Measurements by means of both ponding as well as simulated rainfall are suitable to study the infiltration process. The former needs more replications, due to the small observation area encompassed for each …
Suitability of Some Existing Damage Indexes for Regulating Contracts Between Curators of Museums and HVAC Maintenance and Management Companies
2018
Heating, Ventilating and Air-Conditioning (HVAC) systems in museums are called to properly control important microclimate parameters, not only for visitors’ wellbeing, but mostly for works of art preservation. Accordingly, in case of interruptions occurring to HVAC systems, due to maintenance interventions or drawbacks, it is essential to guarantee the shortest possible period of disservice to which possible damages for the works of art are related. In this regard the aim of this work is to introduce a protocol to follow to support curators in regulate the stipulation of contracts with external companies for a more effective management and maintenance of the HVAC systems in order to preserv…
Implicación del sistema serotoninérgico y dopaminérgico en los efectos reforzantes de la MDMA
2012
La adolescencia constituye un periodo de especial vulnerabilidad al consumo de drogas, siendo los adolescentes los principales consumidores de 3,4- metilendioximetanfetamina (MDMA), un derivado anfetamínico con potencial adictivo. El objetivo del presente trabajo es evaluar el papel de los sistemas dopaminérgico y serotoninérgico en las propiedades reforzantes de la MDMA y en la vulnerabilidad a la recaída en su consumo. En concreto, hemos estudiado la implicación de estos sistemas de neurotransmisión en la adquisición, expresión y reinstauración del condicionamiento de preferencia de lugar (CPL) inducido por MDMA en ratones adolescentes. Para ello utilizamos diferentes agonistas y antagoni…
Bradavidiinista johdetun bradpeptidin karakterisointi ja soveltuvuus affiniteettikromatografiaan
2012
Bradavidiini on Bradyrhizobium japonicum bakteerista löydetty avidiinin ja streptaviidiinin kaltainen proteiini. Avidiini on peräisin kanasta ja streptavidiini Streptomyces avidinii bakteerista. Bradavidiinin aminohapposekvenssi on noin 30 prosenttisesti samankaltainen avidiinin ja streptavidiinin ydinalueiden sekvenssien kanssa. Bradavidiini koostuu 138 aminohaposta ja C-terminaalisesti pienennetty bradavidiini, ns. bradcore, 118 aminohaposta. Bradavidiinilla on useimpien avidiinien tapaan tetrameerinen kvaternaarirakenne ja se muistuttaa sekä rakenteeltaan että toiminnaltaan avidiinia ja streptavidiinia. Bradavidiinilla on muiden avidiinien tapaan kyky sitoa voimakkaasti D-biotiinia. Avid…