Search results for "Reaction"

Optimization of Electrodeposited Nickel-Zinc Alloys for Alkaline Electrolyzer with Nanostructured Electrodes

It is common opinion that hydrogen will become increasingly important over time. However, many research efforts still need to be made to develop efficient, low-cost and carbon-free hydrogen production. In this context, electrolysers will play a key role, but it is necessary to develop efficient and low-cost electrode/electrocatalyst materials. In this work, Nickel-Zinc alloy electrodes with nanowires morphology were investigated as cathode for alkaline electrolyzer. Electrodes were obtained by the simple method of template electrosynthesis that is also inexpensive and scalable. Nanostructured electrodes were analysed by morphological and chemical analyses. The nanowires composition is depen…

Partial photocatalytic oxidation of glycerol in TiO2 water suspensions

2010

2nd European Conference on Environmental Applications of Advanced Oxidation Processes -- SEP 09-11, 2009 -- Nicosia, CYPRUS

Green Organic Reactions by TiO2 Photocatalysis

2015

This contribution gives an account of TiO2-based selective photocatalysis as a green synthetic tool for the production of organics. Some case studies of the most common transformations carried out by means of photocatalytic reactions are illustrated.

Selective oxidation of phenol and benzoic acid in water via home-prepared TiO2 photocatalysts: Distribution of hydroxylation products

2012

Abstract The hydroxylation of phenol (a substrate containing an electron donor group) and of benzoic acid (a substrate containing an electron withdrawing group) has been carried out by the photocatalytic method in aqueous suspensions containing commercial or home prepared TiO2 samples. The aim of the work was to study the distribution of hydroxylation products when different photocatalysts were used and to correlate the selectivity to some physico-chemical features of the powders. The samples were characterized by X-ray diffraction, thermogravimetry, determination of crystalline phase percentage, specific surface area and zero charge point. The photoreactivity results indicate that the prod…

Photocatalytic oxidation of nitrobenzene and phenylamine: Pathways and kinetics

2007

WOS: 000245150800018

Electron structure, ultra-dense hydrogen and low energy nuclear reactions

2019

In this paper, a simple Zitterbewegung electron model, proposed in a previous work, is presented from a different perspective based on the principle of mass- frequency equivalence. A geometric- electromagnetic interpretation of mass, relativistic mass, De Broglie wavelength, Proca, Klein- Gordon, Dirac and Aharonov- Bohm equations in agreement with the model is proposed. A non-relativistic, Zitterbewegung interpretation of the 3.7 keV deep hydrogen level found by J. Naudts is presented. According to this perspective, ultra-dense hydrogen can be conceived as a coherent chain of bosonic electrons with protons or deuterons located in the center of their Zitterbewegung orbits. This approach sug…

La retribuzione nel lavoro pubblico in tempi di crisi

2019

Il saggio analizza le recenti misure di riduzione del costo del lavoro nel pubblico impiego italiano alla luce della degli orientamenti della giurisprudenza al riguardo. La crisi economica è un fattore sempre presente nelle argomentazioni dei giudici. Aumenta il tasso di litigiosità e il potere giudiziario deve valutare la legittimità del-le scelte della pubblica amministrazione e la reazione giudiziaria dei lavoratori pubblici nel tentativo di recuperare, in tutto o in parte, le quote di retribuzione perdute (o non adeguate nel corso del tempo).

Covid 19, Stato di diritto e Convenzione europea dei diritti dell'uomo: il caso ungherese

2021

In this brief intervention it is submitted that the emergency measures against COVID-19, adopted by the Hungarian Government, infringe the rule of law under the European Convention of Human Rights. First of all, these measures appear to be discriminatory, according to art. 1 of the Convention, insofar as they expressly aim at protecting only Hungarian citizens. Furthermore, they are not “necessary” under article 15, given that they extend to the « legal security and the stability of the national economy ». Thirdly, the measures at stake cannot be deemed proportionate (under art. 15), to the extent that : (a) they are not limited in time ; (b) they provide the government with the power to ex…

Aging and prospective memory: the role of working memory and monitoring processes

2008

Background and aims: Remembering to execute an earlier planned action is essential in everyday life, and is a prerequisite for independent living in old age. The purpose of the present study was to determine the influence of age in performing a prospective memory (PM) task and to analyze the differential contribution of working memory and attentional monitoring demands. Methods: In Experiment 1, a group of young and two groups of old adults were assigned to one of two low-demanding conditions: a picture-naming task (only-Naming) and a picture-naming plus a PM task (Naming+PM). In Experiment 2, a group of young and two groups of old adults performed one of two high-demanding conditions, in w…

USE OF HERBAL REMEDIES AMONG CANCER AND TRANSPLANT PATIENTS IN THE TOWN OF PALERMO, SICILY

2010

Concomitant use of herbal remedies may lead to toxicity or failure of conventional therapies in different patients. The objectives of this survey were to assess: (1) the prevalence of the use of vegetal remedies by cancer and transplanted patients (2) the level of communication about such use to the physicians (3) whether such use might be associated to adverse reactions or interactions with conventional drugs. The study was carried out on 100 consecutive cancer patients attending the outpatient medical oncology clinic of the University Hospital "P. Giaccone", Palermo and on other 100 transplanted patients who were hospitalized or followed up at ISMETT, Palermo. Another group was composed o…