131,116 research outputs found
Il Dizionario enciclopedico di Informatica, Inglese-Italiano, Italiano-Inglese, Zanichelli
No full textZanichelli, ISBN: 978-8808-19351-
Importance of rieducation and physiotherapy in the rehabilatation to fly of birds of prey affected by serious invalidant orthopedic lesions : executive techniques
No full textJames Fieramosca: Trasposizione Comunicativa e Gestualità Cromatica.
No full textL'intensità del gesto e la magia del colore nell'opera di Fieramosca si fondono in un unico gesto frutto di un particolare percorso di ricerca artistica
Appunti lessicali e toponomastici. 2: Suffisso d\u27origine ligure in -mo, -ma nelle voci Balma, Calmus ed altre
No full textBologna : Zanichelli, 1901
Fa parte di: Appunti lessicali e toponomastici
https://galileodiscovery.unipd.it/discovery/fulldisplay?context=L&vid=39UPD_INST:VU1&search_scope=MyInst_and_CI&tab=Everything&docid=alma99001984053020604
Bioliquefazione molecolare vegetale: nuova tecnologia per fitocosmesi funzionale
No full text0ggi il settore degli ingredienti
per cosmesi di derivazione vegetale
propone essenzialmente
due categorie di prodotti:
singole molecole ad elevata
purezza o estratti vegetali ottenuti con tradizionali
tecniche a base di solventi (alcool, glicerina,
glicoli, anidride carbonica supercritica,
esano ecc.). I prodotti a base di molecole singole
affidano la propria azione alla comprovata
efficacia della molecola su un target specifico
(con preparati che posso sfiorare o rientrare
appieno nel campo del medical device). Gli
estratti vegetali invece dovrebbero conferire
al prodotto cosmetico le proprietà benefiche
che tradizionalmente vengono riconosciute
alla pianta nella sua interezza
Secondary chemical building blocks from novel biorefining of agrifood wastes for a future bio-based industrial chemistry
No full textThe cost of primary chemical building blocks, the basic chemicals for synthesis, is about 1-3 €/kg. Phenol and cresols represent a good example of primary chemical building blocks of which 2.8 million tons are currently produced in Europe each year. Currently, these primary phenolic building blocks are produced by refining processes from fossil hydrocarbons: 5% of the world-wide production comes from coal (which contains 0.2% of phenols) through the distillation of the tar residue after the production of coke, while 95% of current world production of phenol is produced by the distillation and cracking of crude oil.
In nature phenolic compounds are present in terrestrial higher plants and ferns in several different chemical structures while they are essentially absent in lower organisms and in animals. Biomass (which contain 3-8% of phenols) represents a substantial source of secondary chemical building blocks presently under exploited. These phenolic derivatives are currently used in tens of thousand of tons to produce high cost products such as food additives and flavours (i.e. vanillin), fine chemicals (i.e. non-steroidal anti-inflammatory drugs such as ibuprofen or flurbiprofen) and polymers (i.e. poly p-vinylphenol, a photosensitive polymer for electronic and optoelectronic applications). The cost of the secondary chemical building blocks are range from 40 €/kg to 60.000 €/kg.
European agrifood waste represents a low cost abundant raw material (250 millions tons per year) which does not subtract land use and processing resources from necessary sustainable food production.. The class of phenolic compounds is essentially constituted by simple phenols, phenolic acids, hydroxycinnamic acid derivatives, flavonoids and lignans. As in the case of coke production, the removal of the phenolic contents from biomass upgrades also the residual biomass. Focusing on the phenolic component of agrifood wastes, huge processing and marketing opportunities open since phenols are used as chemical intermediates for a large number of applications, ranging from pharmaceuticals, agricultural chemicals, food ingredients etc.
PHENBUSTER proposes a novel concept for the bio-refinering of agrifood wastes with the aim of substituting secondary chemical building blocks with the same compounds naturally present in biomass. The phenols obtained from wastes will be used as versatile intermediates to obtain a wide range of final products. This project proposes a “Whole Crop Approach” allowing the combination of phenolic recovery, as main strategic goal, with the extraction of fine chemicals, bio-based polymers and energy.
By recovering phenols from plant wastes as chemical building blocks, PHENBUSTER develops a bio-refinery approach with a general validity, since the chemical building blocks feed numerous chemical processes. In this way, our proposal represents the general project exhausting the phenolic, the saccharidic and finally the energy content from agrifood wastes implementing integrated enzymatic and microbial technologies
Recensione a: Dies ac nocte. I codici liturgici di oristano dal giudicato d'Arborea all'età spagnola (secoli XI-XVII), a cura di Giampaolo Mele, Cagliari, AM&D 2009, pp. 419, illustrazioni a colori
No full textAn ontology-based grid service for multimedia search
No full textNowadays ICT technologies are deeply shaping the ways teaching and
learning take place in the Universities. The effective exploitation of a
potentially huge amount of instructional multimedia material calls for
powerful search capabilities. The ideas and the tools developed in the
framework of the Semantic Web can be very useful to build an enriched
service for information discovery in next-generation e-learning systems.
In this paper we present an ontology-based Grid Service for searching
multimedia contents within our Grid-based e-learning environment. To
annotate the material we have used an ontology describing the nature of
the multimedia resources
Pre-treatment to enhance the energetic yield of winemaking by-products
No full textOn the basis, agro-food wastes can represent a potential energy resource even if the biological transformation to methane is mainly limited to hydrolytic pre-treatment for producing simple sugar to be rapidly fermented. Grape stalks for example have a high percentage
of lignin and cellulose and can’t be used, whitout pretreatment, for an anaerobic digestion process.
Our findings show enzymatic and thermo-mechanical pre-treatments in combined application for optimise hydrolytic mechanism on winemaking wastes which represents 0,9 milion ton/year in Italy.
A screening of specifically industrial enzymatic complex for the hydrolysis lignocellulosic biomass were tested using the principal polysaccharides component of the vegetal cells.
Hydrolysis test are optimized for the different feedstock, in particular grapes stalk and marc from winery industry.
A combination of thermo-mechanical treatment at different temperatures as well enzymatic concentrations from 0,1% to 5% w/w showed an increasing release of simple sugars up to 25% depending to the kind of feedstock.
The optimisation of the operative factors permits to justify an industrial useful of this application in which the sugar concentration has yielded a maximum of 21 gr/L and 30 gr/L with grapes stalk and marc, respectively
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