Search results for "Process"
showing 10 items of 22310 documents
Comparison among different rainfall energy harvesting structures
2018
In this paper, an experimental comparison between different rainfall harvesting devices through the study of the electrical rectifying circuit is proposed. In more detail, three harvesting structures are considered: the cantilever, the bridge and the floating circle. Different waveforms were acquired and discussed. The processed data were compared in order to suggest the best choice for the rectifying circuit, from the simplest one to that most frequently endorsed in the technical literature.
Diffusion processes with ultrametric jumps
2007
Abstract In the theory of spin glasses the relaxation processes are modelled by random jumps in ultrametric spaces. One may argue that at the border of glassy and nonglassy phases the processes combining diffusion and jumps may be relevant. Using the Dirichlet form technique we construct a model of diffusion on the real line with jumps on the Cantor set. The jumps preserve the ultrametric feature of a random process on unit ball of 2-adic numbers.
Submarine canyon morphologies in the Gulf of Palermo (Southern Tyrrhenian Sea) and possible implications for geo-hazard
2011
12 pages, 12 figures, 1 table.
Indústria têxtil de Santa Catarina e sua capacidade inovadora: Estudo sob a perspectiva da eficiência, eficácia, custos e melhoria de processos
2014
Santa Catarina se destaca como um dos principais parques produtivos do setor têxtil. Assim como as demais indústrias têxteis brasileiras, a catarinense vem sofrendo pressões de mercado, principalmente dos países asiáticos. O estudo teve como objetivo identificar se as dimensões - eficiência, eficácia, custos e as melhorias de processo – estão associadas ao desempenho da inovação na indústria têxtil de Santa Catarina. A pesquisa foi descritiva, exploratória e causal, de levantamento ou survey e quantitativa. A amostra foi composta por 441 respondentes de 16 organizações do estado de Santa Catarina. Os dados foram analisados por meio de análise fatorial exploratória, análise fatorial confirma…
Diameter Control in the Arteriolar Tree by Changes in Post-Capillary Resistance
1997
Presently, the mechanisms underlying local adjustment of organ perfusion to the metabolic needs of the tissue are not well understood. Even though a large number of vasoactive substances is known to be released upon variations in tissue metabolism,24,28 the exact mechanisms of their action are unclear: Because diffusion is a slow and inefficient transport process for covering long distances, arterioles can only sense those changes in concentration and hence in release rate of these mediators with acceptable spatial and temporal resolution that originate from their immediate vicinity. On the other hand, perfusion needs to be regulated such that also the worst supplied tissue regions located …
Gas—liquid chromatographic analyses
1984
Abstract The gas chromatography (GC) of n -alkyl acetates (CH 3 COOR), chloroacetates (CH 2 ClCOOR), dichloroacetates (CHCl 2 COOR) and trichloroacetates (CCl 3 COOR), where the alcohol chain length (R) varied between 1 and 8, and certain of their monochlorinated derivatives, 176 compounds altogether, has been studied on SE-30 and OV-351 glass capillary columns under the same operating conditions. The isomeric monochlorinated esters are eluted in direct order from the 1- chloro to the ω-chloro isomer, the separation of the isomers being complete on OV- 351. On SE-30, however, the peaks of the 6- and 7-chlorooctyl esters are partly overlapped. The separation of the mixtures of odd- and e…
Recent Advances in Sample Preparation for Pesticide Analysis
2012
Much progress has been made in pesticide analysis in the past decade. During this time, hyphenated techniques involving highly efficient separation with sensitive mass spectrometric detection have become the methods of choice. Even with such powerful instrumental techniques, a demanding task in pesticide residue analysis is the development of multiresidue methods for the determination of pesticides in air, water, soil, sediment, biota, and food. This chapter summarizes the analytical characteristics of the different methods of sample preparation for the determination of pesticide residues in a variety of food matrices, and surveys their recent applications in combination with gas chromatogr…
A novel thermoeconomic analysis under dynamic operating conditions for space heating and cooling systems
2019
Abstract Thermoeconomic analysis allows for a deep understanding of the cost formation process within an energy system, providing insights into the possible routes for improvement. Several thermoeconomic approaches are well-established for application in systems with steady operating conditions, such as power plants, while a limited number of applications to air-conditioning systems in buildings have been proposed, due to the difficulties in dealing with very irregular load profiles and unsteady plant operating conditions. This study investigates the potential of Thermoeconomics as a support for decision making in building energy systems, proving its capability to identify trade-offs betwee…
Collaborare per crescere. La cooperazione tra imprese al Nord e al Sud
2014
Dove si diffonde un sistema di relazioni cooperative, le imprese sperimentano una più elevata crescita economica, entrano con maggiore successo nei mercati internazionali, realizzano innovazioni che si diffondono rapidamente sui mercati. Queste tendenze sono state spesso richiamate soprattutto in questi anni di grave crisi economica e vengono confermate anche dal Rapporto della Fondazione RES 2013 curato da Pier Francesco Asso e Emmanuele Pavolini. Ma a che cosa è legata la propensione delle imprese a cooperare? Perché la collaborazione è così "difficile"? Esistono differenze territoriali importanti che distinguono le imprese del Sud da quelle del Nord? Quali sono le attitudini a collaborar…
Fiducia, Partecipazione a reti e performance economica
2014
Nell'ambito di una ricerca originale su un campione rappresentativo di imprese operanti in un numero selezionato di settori, è stato analizzato il ruolo della fiducia interpersonale e della fiducia istituzionale nel determinare una maggiore o minore propensione a collaborare; inoltre è stata approfondita la relazione fra partecipazione a reti (formali e informali) e performance economica, distinguendo anche il caso in cui le reti sono il risultato di legami forti di tipo parentale o amicale