Search results for "Cni"
showing 10 items of 3680 documents
Role of Dietary Carotenoids in Frailty Syndrome: A Systematic Review
2022
Unbalanced diets and altered micronutrient intake are prevalent in the aging adult population. We conducted a systematic review to appraise the evidence regarding the association between single (α-carotene, β-carotene, lutein, lycopene, β-cryptoxanthin) or total carotenoids and frailty syndrome in the adult population. The literature was screened from study inception to December 2021, using six different electronic databases. After establishing inclusion criteria, two independent researchers assessed the eligibility of 180 retrieved articles. Only 11 fit the eligibility requirements, reporting five carotenoid entries. No exclusion criteria were applied to outcomes, assessment tools, i.e., f…
Variabilità della risposta produttiva in Brassica carinata al variare della precessione colturale.
2009
Numerose brassicacee, tra cui B. napus e B. carinata, sono oggi al centro dell'attenzione quali potenziali fonti di olio industriale per la produzione di biodiesel. Negli ambienti interni siciliani, sperimentazioni diverse hanno già messo in evidenza l'ampia adattabilità di queste specie alle condizioni pedoclimatiche prevalenti; in semina autunnale esse possono consentire buoni livelli produttivi usufruendo degli apporti idrici naturali, occupando nell'avvicendamento il posto dei cereali autunno-vernini e permettendo così di interrompere la monosuccessione cerealicola. Numerosi testi di riferimento, peraltro, collocano le brassicacee oleifere nel gruppo delle colture "da rinnovo", soprattu…
Gestione ecocompatibile delle infestanti nel finocchio da seme (Foeniculum vulgare Mill.)
2009
Nelle coltivazioni officinali, l'adozione di tecniche a basso impatto ambientale (tra cui la produzione in regime di agricoltura biologica) costituisce una scelta quasi obbligata per consentire al prodotto un'adeguata competitività sui mercati nazionali ed esteri. In quest'ambito, gli evidenti effetti che le infestanti esercitano sulla produzione e sui suoi parametri qualitativi pongono la gestione delle infestanti tra i principali nodi dell'agrotecnica delle colture officinali. Nel quadriennio 2004 -2007, il DAAT dell'Università di Palermo ha pertanto svolto una serie di sperimentazioni in campo tendenti a verificare l'efficacia contenitiva e gli effetti sulla coltura di alcune tecniche di…
An experimental investigation on air quality inside WindJet aircraft
2012
ABSTRACT In order to improve the passengers and crew comfort during the flight, the aim of the present paper is a study of the cabin air quality through experimental measures on randomly selected flight segments of an Italian airline company, WindJet. Carbon dioxide, ultrafine particles, temperature and relative humidity have been measured by using low cost high efficiency instrumental equipments. Exploring ways to improve aircraft cabin air quality, WindJet and University of Palermo are investigating equipment, filters and components of the ventilation system. In this paper, after description of both ventilation systems for aircrafts of WindJet and the instrumental equipments used to measu…
Effects of Air Tightness Tests on Steel Thin-Wall Box Structures with Circular and Rectangular Cross Sections
2019
In this paper, the effects of air tightness tests on steel box structures with rectangular or circular cross sections typical of port cranes (legs, arms, and crosspieces) are analyzed. Legs and arms are generally made with elements with profiles having a square or rectangular cross section, while the diagonal struts are made with profiles having circular cross sections. To verify the air tightness of these elements, a necessary requirement to protect them from corrosion if they are not protected with other protection techniques, air tightness tests are performed. These tests, in the framework of durability tests, must be carried out while maintaining the structure elasticity well below the …
Experimental characterization of variable-speed packaged rooftop units in presence of evaporator fouling
2022
Variable-speed packaged rooftop units have been increasingly adopted in the commercial sector. If not properly maintained, the fouling of heat exchangers and the improper refrigerant charge could increase energy consumption. In this work, the response of variable-speed rooftop units to evaporator fouling is investigated based on experiments on a variable-speed 17.5 kW rooftop unit. A novel testing procedure is proposed, aimed at covering a broad range of operating conditions by a reduced number of tests. Two opposite cases were investigated: (i) even in presence of fouling, the controller can restore the required cooling capacity, and (ii) the intensity of the fouling does not allow the con…
Margini e interstizi vegetati per una città resiliente
2021
La mancanza di vegetazione all’interno delle nostre città e, soprattutto, dei centri storici determina oggi, alla luce dei cambiamenti climatici in corso, notevoli problematiche tra le quali vanno annoverate – tra quelle più gravi – l’impossibilità di contrastare efficacemente le ondate di calore, sempre più frequenti in ambito Mediterraneo, con conseguente aumento dei consumi energetici degli edifici dovuti alla necessità di garantire il comfort indoor e l’incapacità di rallentare il deflusso delle acque meteoriche che a causa degli eventi di pioggia estremi e dell’impermeabilità dei suoli rendono sempre più inefficaci i sistemi di drenaggio urbano esistenti. L’utilizzo della vegetazione c…
The Sicilian rock partridge: latest data on genetic integrity from four different relict areas
2021
Sicily (Italy) hosts a “relict”, endemic population of the birds Alectoris graeca whitakeri commonly known as Sicilian Rock Partridge. In the last decades, due to the risk of restocking with other European and Asiatic species for hunting purpose, a study was carried out to investigate the potential risk of hybridisation. The mtDNA control-region and nuclear microsatellites were genotyped. Due to the importance of the species, samples were mainly characterized by feather and stool samples, and rarely by carcasses found in the environment, from year 2011 to 2012. A panel of 7 microsatellite loci was validated. Three multiplexes that allowed the simultaneous amplification of 3 microsatellites,…
An improved algorithm for thermal dynamic simulation of walls using Z-transform coefficients
2003
The Transfer Function Method (TFM), recommended by American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), is one of the most modern tools available to solve heat transfer problems in building envelopes and environments. TFM utilises Z-transform to solve the equations system that describes the heat transfer in a multi-layered wall. Due to an analogy with an electric circuit, it is possible to write the equations system in a matrix suitable to be solved by computer. Authors carried out an analysis on an historical building placed in the south of Italy to test the reliability and the quality of the thermal dynamic simulation using TFM. The analysis is performed usi…