Search results for "89"
showing 10 items of 1153 documents
Drying kinetics and physico-chemical quality of mango slices
2019
Mango (Mangifera indica L.) is an important tropical fruit consumed worldwide and grown in Italy only in Sicily, where the areas of the Tyrrhenian coast have proved to be suitable to produce valuable fruits. Mango fruit has a pleasant aroma and taste, which are important qualities for consumer’s sensorial acceptance. However, they are highly perishable, prone to progressive undesired changes if stored untreated, resulting in around 25% postharvest losses, which is further increased during storage and transportation. An alternative for reducing the above-mentioned undesired changes is the dehydration of the cut fruit, which reduce the fruit water activity, thereby avoiding the deteriorative …
Graphene nanosystems as supports in siRNA Delivery
2018
The nature of graphene-based nanosystems, as well as the possibility to synthesize them at low cost, have made them in the last few years, an interesting proposition in tumour therapy as a drug delivery system. Here, a reduced form of graphene oxide (RGO) has been synthesized and conjugated with a specific antibody for active targeting against tumour cells (RGOY). Furthermore, its bi-dimensional nature permits also p- p stacking interactions with planar molecules like siRNA (RGOY-siRNA). All these nano-complexes were characterized by DLS and DSC analysis, TEM and Raman spectroscopy and their biocompatibility was demonstrated by viability assay on cell line ECV 304. The system is able to be …
Formulation of Different Chitosan Hydrogels for Cartilage Tissue Repair
2014
Different formulations of Chitosan/sulphate and Chitosan/PEGDE were produced by physical and chemical reticulation to obtain hydrogels with better physiochemical properties. The hydrogels were analyzed – in terms of their non-toxicity, proliferative, differentiative, inflammatory and immunology responses. Commercial grade Chitosan (Sigma) was solubilized and purified by progressive filtrations. Then, the polymer was freeze-dried in a water soluble cationic form. A physical hydrogel was prepared by mixing a 3 % w/w water solution of the a.m. polymer with different stoichiometric ratios of (SO4=) 1/0.5;1/0.75;1/1 respectively. The hydrogels were cross-linked in multiwells. The chemical hydrog…
Fabrication and characterization of nanostructured Ni and Pd electrodes for hydrogen evolution reaction (HER) in water-alkaline electrolyzer
2017
In the field of water-alkaline electrolyzer, the development of nanoporous low cost nickel electrodes is one of the potential approaches to increase electrocatalytic activity. Template electrodeposition is a facile and cheap technique for obtaining Ni nanowires (NWs) with high surface area. These nanostructures were fabricated by a two-step procedure. In the first step, a Ni compact layer was deposited on one side of the template where a gold film was previously sputtered, while, in the second-step, an ordered array of Ni-NWs was obtained by electrodeposition inside the template channels. The NWs were firmly connected to the underlying Ni layer, acting as a current collector. In order to en…
Żydzi w dyskursie Kościoła katolickiego
2016
Jews in the discourse of the Catholic Church The article describes the most important changes which appeared after the Second Vatican Council in the discourse of the Catholic Church in reference to its attitude to confessors of Judaism. The change is the difference between the state of texts in two different moments, which is why the first part of the article is dedicated to the characteristics of pre-Council (and mostly pre-war) discourse about Jews, and the second part to main directions of the changes caused by the realization of the Council postulates. The third part shows indications of the continuation of old, deep-rooted schemes. The analysis partly concerns texts of the Church world…
Alessandro Gori - Biancamaria Scarcia Amoretti (eds.): L'Islam in Etiopia: Bilanci e prospettive
2014
Review Article
Joëlle Beaucamp - Françoise Briquel-Chatonnet - Christian Julien Robin (eds.): Juifs et chrétiens en Arabie au Ve et VIe siècles: regards croisés sur…
2014
Review Article
Federalism and Ethnic Minorities in Ethiopia: Ideology, Territoriality, Human Rights, Policy
2014
In 1994 Ethiopia has adopted a new constitution, considered one of the most advanced in terms of provisions for human rights. The progressive ratification of several international treaties on minority rights had already begun in 1991, immediately after the fall of the Derg regime. This progress has brought Ethiopia into the UN monitoring system, but the review of the official UN documents reveals the mismatch between the mentioned constitutional and international steps and the on-ground situation. This article considers two possible causes of this gap. The first is the particular form of ethnic federalism, first introduced with the Charter of the Transitional Government of Ethiopia and late…
Questua, sacrificio e banchetto rituale nelle feste campestri della Sardegna
2019
La questua di denaro, di alimenti e di capi di bestiame, il sacrificio di questi ultimi e il banchetto collettivo sono ancora oggi fra le azioni rituali più importanti delle feste campestri della Sardegna. Attraverso la descrizione e l’analisi di alcuni casi di studio, il contributo si propone di indagare l’importanza del cibo in ambito festivo. Durante il banchetto, infatti, si creano e si rinnovano relazioni e gerarchie, si esalta l’abbondanza e il consumo, si ribadisce l’appartenenza alla comunità e al culto comunitario. Il cibo, in sostanza, diviene un importante e imprescindibile strumento di comunicazione sociale. The begging of money, food and livestock, the sacrifice of the latter a…
The relativistic attitude in development: reflections on the implementation of the Ethiopian multinational Constitution
2019
L’approccio allo sviluppo che considera la crescita economica come unico obiettivo può produrre degli effetti deleteri sui gruppi marginalizzati. Lo sviluppismo adottato in Etiopia dal 1991 illustra questo punto con riferimento ai contadini, ai popoli pastorali e alle minoranze etniche. La riflessione internazionale sullo sviluppo e il progresso nel campo dei diritti umani hanno portato all’emergere di nuovi paradigmi. L’articolo mostra come le misure correttive siano state caratterizzate da una crescente attitudine ‘relativistica’, che consiste nel dare considerazione alla rilevanza di articolazioni particolari di cultura, norme formali o informali, e condizioni locali. L’attitudine relati…