Search results for "97"
showing 10 items of 1081 documents
Contratti e Clausole di Coordinamento nei gruppi di società
2019
L'articolo si occupa della fattispecie del contratto di coordinamento e delle relative clausole nei gruppi di società, di cui all'art. 2497-septies c.c.
Computing Euclidean Steiner trees over segments
2020
In the classical Euclidean Steiner minimum tree (SMT) problem, we are given a set of points in the Euclidean plane and we are supposed to find the minimum length tree that connects all these points, allowing the addition of arbitrary additional points. We investigate the variant of the problem where the input is a set of line segments. We allow these segments to have length 0, i.e., they are points and hence we generalize the classical problem. Furthermore, they are allowed to intersect such that we can model polygonal input. As in the GeoSteiner approach of Juhl et al. (Math Program Comput 10(2):487–532, 2018) for the classical case, we use a two-phase approach where we construct a superse…
Modeling of Melt Flow and Heat Transfer in Stationary Gas Tungsten Arc Welding with Vertical and Tilted Torches
2021
A 3D numerical simulation was conducted to study the transient development of temperature distribution in stationary gas tungsten arc welding with filler wire. Heat transfer to the filler wire and the workpiece was investigated with vertical (90°) and titled (70°) torches. Heat flux, current flux, and gas drag force were calculated from the steady-state simulation of the arc. The temperature in the filler wire was determined at three different time intervals: 0.12 s, 0.24 s, and 0.36 s. The filler wire was assumed not to deform during this short time, and was therefore simulated as solid. The temperature in the workpiece was calculated at the same intervals using heat flux, current flux, ga…
Are Cover Crops Affecting the Quality and Sustainability of Fruit Production?
2021
The study of the interaction between fruit trees and cover crops has been addressed in numerous works over the last 50 years or more, evidencing the need to evolve from a productive orchard to an orchard that plays different ecosystem roles in terms of environmental sustainability rather than just productivity. This review, through an analysis of the scientific literature since the 1950s, highlights the development of sustainable soil management models in fruit tree orchards, mostly considering the relationship with fruit quality traits and with the ecosystem services that result from the adoption of cover crops, aiming at identifying and formulating technical recommendations in perennial o…
Les coûts par élève dans l'enseignement français en 1970 : étude par filière et par payeur
1974
référence interne : 74004
Performance of a Pilot-Scale Constructed Wetland and Medium-Term Effects of Treated Wastewater Irrigation of Arundo donax L. on Soil and Plant Parame…
2021
On marginal lands in the Mediterranean basin, giant reed (Arundo donax L.) represents one of the most interesting perennial crops due to high levels of biomass production. Considering periodic water shortage during the summer months in this area, the reuse of treated wastewater (TWW) would seem to be a good opportunity for the growth of the species. The aim of this study was to assess the medium-term effects of irrigation using freshwater (FW) and TWW on soil characteristics and growth in giant reed plants. TWW was obtained from a pilot-scale horizontal subsurface flow constructed wetland system (HSSF CWs) with a total surface area of 100 m2. A split-plot design for a two-factor experiment …
Electrocatalytic Behavior of Tetrathiafulvalene (TTF) and Extended Tetrathiafulvalene (exTTF) [FeFe] Hydrogenase Mimics
2021
TTF- and exTTF-containing [(μ-S2)Fe2(CO)6] complexes have been prepared by the photochemical reaction of TTF or exTTF and [(μ-S2)Fe2(CO)6]. These complexes are able to interact with PAHs. In the absence of air and in acid media an electrocatalytic dihydrogen evolution reaction (HER) occurs, similarly to analogous [(μ-S2)Fe2(CO)6] complexes. However, in the presence of air, the TTF and exTTF organic moieties strongly influence the electrochemistry of these systems. The reported data may be valuable in the design of [FeFe] hydrogenase mimics able to combine the HER properties of the [FeFe] cores with the unique TTF properties
Leadership in Finnish comprehensive school core curricula since the 1970s
2014
Tiivistelmä – Abstract Suomen peruskoulujärjestelmä sai alkunsa vuonna 1970 ja samana vuonna julkaistiin ensimmäinen peruskoulun opetussuunnitelma. Seuraavat opetussuunnitelmauudistukset toteutettiin vuosina 1985, 1994 ja 2004. Parhaillaan Suomessa kehitetään uutta peruskoulun opetussuunnitelmaa, joka on tarkoitus ottaa käyttöön vuonna 2016. Tässä tutkimuksessa tarkasteltiin johtajuuden ja opetussuunnitelman välistä suhdetta. Tutkimus toteutettiin laadullisena sisällönanalyysina, jossa aineiston muodostivat viralliset opetussuunnitelmat ja kaksi asiantuntijahaastattelua. Tutkimustulokset analysoitiin summatiivisen sisällönanalyysin menetelmin ja tulokset kuvattiin tulkinnallisella menetelmä…
Prasa polskiej emigracji politycznej w Wielkiej Brytanii wobec protestów robotników w kraju w czerwcu 1976 roku
2016
Strajki i demonstracje w Polsce, do których doszło 25 czerwca 1976 r. odbiły się żywym echem wśród emigracji w Wielkiej Brytanii. W artykule przedstawiono opinie i oceny emigracyjnych polityków oraz publicystów dotyczące przyczyn, przebiegu i konsekwencji czerwcowych protestów w kraju.
The Histone Deacetylase Inhibitor JAHA Down-Regulates pERK and Global DNA Methylation in MDA-MB231 Breast Cancer Cells
2015
The histone deacetylase inhibitor N-1-(ferrocenyl)-N-8-hydroxyoctanediamide (JAHA) down-regulates extracellular-signal-regulated kinase (ERK) and its activated form in triple-negative MDA-MB231 breast cancer cells after 18 h and up to 30 h of treatment, and to a lesser extent AKT and phospho-AKT after 30 h and up to 48 h of treatment. Also, DNA methyltransferase 1 (DNMT1), 3b and, to a lesser extent, 3a, downstream ERK targets, were down-regulated already at 18 h with an increase up to 48 h of exposure. Methylation-sensitive restriction arbitrarily-primed (MeSAP) polymerase chain reaction (PCR) analysis confirmed the ability of JAHA to induce genome-wide DNA hypomethylation at 48 h of expos…