Search results for " RETE"
showing 10 items of 346 documents
Etude de la variabilité des propriétés physiques et hydrodynamiques d'un sol argileux sous l'effet de conduites en protection intégrée contre les adv…
2015
Integrated weed management (IWM)-based cropping systems are of great interest due to their significant reduction of herbicide inputs by using a complex combination of agricultural techniques. The main objective of our work was to contribute to the environmental dimension of the multi-criteria evaluation of IWM-based cropping systems which were set up since 2000 on the experimental domain of the National Institute for Agronomical Research (INRA) to Bretenière (France). The variability of physical and hydrodynamic soil properties involved in the transfer of water through the vadose zone was studied for the 5 cropping systems present on the experimental site (1 reference cropping system and 4 …
Powerful odorants in bovine, ovine, caprine and water buffalo milk determined by means of gas chromatography-olfactometry
1993
SummaryThe main compounds responsible for the aroma of bovine, ovine, caprine and water buffalo freshly secreted milk have been identified by means of a gas chromatography–olfactometry technique. Of the fourteen odour-active volatile compounds detected, eight were present in all milks studied. Ethylbutanoate and ethylhexanoate (fruit-like aroma), among the neutral odorants, were the major contributors to the odour of bovine, ovine and caprine milk. The aroma of water buffalo milk was less dependent on ethylhexanoate and was also due to l-octen-3-ol (aroma of raw mushrooms), nonanal (freshly cut grass), indole (stable, animals) and an unidentified constituent, characterized by a retention in…
Le reti tra avvocati per la partecipazione alle procedure pubbliche di affidamento di servizi legali
2019
L'articolo analizza le principali questioni giuridiche connesse alla possibilità - oggi offerta dall'art. 12 della l. n. 81/2017 - di stipulare contratti di rete tra liberi professionisti, ed in particolare tra avvocati, allo scopo di partecipare alle gare pubbliche di affidamento di servizi legali. L'A. si propone altresì l'obiettivo di valutare se ed in che misura il contratto di rete possa offrire vantaggi competitivi, in termini di partecipazione alle procedure con la pubblica amministrazione, rispetto alle differenti modalita` organizzative attualmente a disposizione degli avvocati (es. società, associazioni, associazioni temporanee, consorzi stabili professionali).
Assessing the influence of different biochar fractions on soil structure and soil water retention: laboratory investigation on a Sicilian soil
2012
Zawartość niektórych metali ciężkich w osadach dennych wybranych zbiorników retencyjnych
2005
Badanie metodą inwersyjnej chromatografii gazowej wpływu wielkości podstawnika na właściwości inkluzyjne kaliksarenów
2009
Badano wpływ wielkości alifatycznego podstawnika na zdolności inkluzyjne kaliksarenów {kaliks[4]arenu(K4), p-izopropylokaliks[4]arenu (IPK4) i p-tert-butylokaliks[4]arenu (TBK4)}. Oceny wpływu dokonywano za pomocą metody QSRR przy użyciu inwersyjnej chromatografii gazowej. W charakterze solutów użyto szeregu alifatycznych alkoholi, homologów benzenu i homologów pirydyny. Na podstawie indeksów retencji Kovatsa i wykresów zależności właściwej objętości retencji od temperatury wrzenia [Vg=f(Tw)] stwierdzono, że tylko podstawione kaliksareny wykazują właściwości inkluzyjne w stosunku do niższych alkoholi.
Introduzione (1. Le prospettive del capitale sociale, 2. In re: il convegno trapanese,3. Ex post: i contributi alla riflessione, 4. Capitale sociale …
2008
La tripartizione del volume curato dall’autrice obbliga la medesima ad una ricostruzione degli snodi concettuali che ne ricostituiscono il denominatore comune. Il saggio descrive e argomenta gli elementi teorici ed empirici che legano il Capitale sociale ai concetti di Rete e di New Media. Il c.s., oltre ad essere “una realtà emergenziale”, si realizza come “qualità delle relazioni sociali”, come una “variabile interveniente” che si rafforza attraverso la Rete, proprio nello scambio di esperienze, opinioni e riflessioni con altri attori sociali coinvolti, anche se separati spazialmente, nello stesso processo di democrazia partecipativa allargata. Allo stesso tempo il c.s. rivela le struttur…
Organisational and individual resources as antecedents of older nursing professionals’ organisational commitment : Investigating the mediating effect…
2021
Aim and objectives To investigate how organisational and individual resources are linked to older (50+) nursing professionals’ organisational commitment, and to examine the possible mediating role of the active use of selection, optimisation and compensation (SOC) strategies. Background Many healthcare organisations need to find ways to retain their older nursing professionals due to nursing shortage. Design To test a set of hypotheses, cross-sectional survey data (n = 396) were used. Data were analysed using correlation analysis and partial least-squares structural equation modelling. STROBE Statement for cross-sectional studies has been followed in this study. Results The results exhibite…
Gas-liquid chromatography and lipophilicity of esters of benzoic acids
1987
Abstract The use of gas-liquid chromatographic (GLC) retention indices for the determination of lipophilicity was studied for a series of alkyl and arylalkyl esters of substituted benzoic acids. The regression relationships between the logarithms of the partition coefficients and the retention characteristics measured on two cpillary columns, SE-30 and OV-351, were evaluated. The behaviour of arylalkyl esters and of alkyl esters cannot be expressed in terms of a single regression equation. This is probably a consequence of the effect of the intramolecular hydrophobic interaction upon the retention of arylalkyl esters under GLC conditions. An analysis of the isokinetic relationships revealed…
Gas chromatography of homologous esters
1984
Abstract The gas chromatographic retention behaviour of the butanoyl and 2-, 3- and 4-chlorobutanoyl esters of C 3 —C 5 saturated aliphatic branched-chain and unsaturated C 3 —C 6 alcohols on SE-30 and OV-351 glass capillary columns operated iso-thermally at several temperatures is reported. Retention index increments at 80, 120 and 160°C show the effects of chain branching and the olefinic and acetylenic unsaturation in the alkyl chain and the effect of the position of the chlorine substituent in the acyl chain. The results are compared with the behaviour of the corresponding n -alkyl esters and the chlorinated propanoyl esters.