Search results for "Tempera"

La Costituzione della Repubblica italiana. Commento articolo per articolo. Art. 40

2018

La Costituzione repubblicana ha qualificato lo sciopero come diritto nella previsione dell'art. 40. La disposizione costituzionale mette in evidenza, pur nella sua estrema sintesi, l'idea che lo sciopero sia l'espressione di un conflitto, elemento caratterizzante i contesti pluralistici. Il legislatore, con la legge 146 del 1990 e con la legge n. 83 del 2000 è intervenuto a disciplinare la materia, con una scelta che mantiene intatta l'eredità costituzionale, cioè quella del conflitto che richiede una composizione, e che individua nella Commissione di Garanzia il soggetto che deve provvedere alla composizione e al contemperamento degli interessi in conflitto

Commissione di Garanzia e attuazione del diritto di sciopero nell'ordinamento costituzionale

2016

La Costituzione repubblicana ha qualificato lo sciopero come diritto nella previsione dell'art. 40. La disposizione costituzionale mette in evidenza, pur nella sua estrema sintesi, l'idea che lo sciopero sia l'espressione di un conflitto, elemento caratterizzante i contesti pluralistici. Solo nel 1990, con la legge n. 146, il legislatore è intervenuto a disciplinare la materia, con una scelta che mantiene intatta l'eredità costituzionale, cioè quella del conflitto che richiede una composizione, e che individua nella Commissione di Garanzia il soggetto che deve provvedere alla composizione e al contemperamento degli interessi in conflitto.

Demo 49. Termómetro de resistencia

2013

Objetivo: Entender el funcionamiento de los termómetros de resistencia. Observar cómo la resistencia eléctrica varía con la temperatura de dos formas diferentes.

Valutazione delle principali criticita’ nel settore delle colture protette in materia di prevenzione delle malattie professionali in un campione di a…

2009

Pyrolytic formation of polycyclic aromatic hydrocarbons from sesquiterpenes

2012

Author's version of an article in the journal: Food Chemistry. Also available from the publisher at: http://dx.doi.org/10.1016/j.foodchem.2012.06.033 The products of the pyrolysis of four sesquiterpenes, β-caryophyllene, α-cedrene, longifolene and valencene, have been examined. Pyrolysis was carried out at 300, 400 and 500 °C, the products determined by GC–MS and then examined for similarities and differences using multivariate data analysis. Analysis showed that longifolene was most resistant and caryophyllene least resistant to pyrolysis with cedrene and valencene occupying intermediate positions. While the compounds were largely unchanged at 300 °C, polycyclic aromatic hydrocarbons (PAHs…

Multi-Chip RFID Antenna Integrating Shape-Memory Alloys for Detection of Thermal Thresholds

2011

Low-cost wireless measurement of objects' temperature is one of the greatest expectation of radiofrequency identification technology for the so many applications in cold supply-chain control and safety assessment in general. In this context, the paper proposes a dual-chip UHF tag embedding shape memory alloys (SMA) able to transform the variation of the tagged item's temperature into a permanent change of antenna radiation features. This event-driven antenna is hence able to selectively activate the embedded microchips according to the temperature above or below a given threshold. A general design methodology for the resulting two-ports tag antenna is here introduced and then applied to pro…

Charge Transport Mechanisms in Heavy-Ion Driven Leakage Current in Silicon Carbide Schottky Power Diodes

2016

Under heavy-ion exposure at sufficiently high reverse bias voltages silicon carbide (SiC) Schottky diodes are observed to exhibit gradual increases in leakage current with increasing ion fluence. Heavy-ion exposure alters the overall reverse current-voltage characteristics of these diodes, leaving the forward characteristics practically unchanged. This paper discusses the charge transport mechanisms in the heavy-ion damaged SiC Schottky diodes. A macro model, describing the reverse current-voltage characteristics in the degraded SiC Schottky diodes is proposed. peerReviewed

Temperature-responsive hybrid nanomaterials based on modified halloysite nanotubes uploaded with silver nanoparticles

2022

New temperature-responsive hybrid nanomaterials based on modified halloysite nanotubes (HNTs) containing grafted polymer brushes with silver nanoparticles have been successfully fabricated. We used a three steps process including synthesis of the initiating coatings onto HNTs surface, fabrication of the POEGMA – poly(oligo(ethylene glycol)ethyl ether methacrylate) grafted brushes and synthesis of the silver nanoparticles (AgNPs). The synthesis and properties of hybrid nanomaterials were studied by FT-IR, TGA and DLS methods. It is shown that the introduction of AgNPs, formed from 0.005 M AgNO3 solution leads to a significant reduction of low critical solution temperature (LCST) of the polym…

The role of adolescents' temperament in their positive and negative emotions as well as in psychophysiological reactions during achievement situations

2019

Abstract This study examined the role of adolescents' (n = 190) temperament in their emotional reactions in achievement situations. Adolescents rated their temperament (i.e., surgency/extraversion, negative affectivity, effortful control) and completed achievement tasks in Grade 6. They also reported their emotions before and during challenging and non-challenging tasks. In addition, adolescents' autonomic nervous system reactions (i.e., skin conductance levels) were recorded. The results showed that high effortful control was related to higher levels of positive emotions independent of the degree of task difficulty. Low negative affectivity and high effortful control were related to lower …

Comparing soil inventory with modelling : Carbon balance in central European forest soils varies among forest types

2018

Forest soils represent a large carbon pool and already small changes in this pool may have an important effect on the global carbon cycle. To predict the future development of the soil organic carbon (SOC) pool, well-validated models are needed. We applied the litter and soil carbon model Yasso15 to 1838 plots of the German national forest soil inventory (NFSI) for the period between 1985 and 2014 to enables a direct comparison to the NFSI measurements. In addition, to provide data for the German Greenhouse Gas Inventory, we simulated the development of SOC with Yasso15 applying a climate projection based on the RCP8.5 scenario. The initial model-calculated SOC stocks were adjusted to the m…