L'emigrazione Ligure in California

The survival difficulties of the people of Liguria, a small Northern Italian region, squeezed between mountain and sea, established their familiarity with migrations, more and more directed overseas. The importance of this migration lies in its precocity, compared with the rest of Italy, and on its effects. The westward expansion was a strong attraction factor for Ligurians, many of which were already present in that part of the world. Their contribute was crucial for shaping the characters of California, where gold was found in 1848. Ligurian migration in California met many of the peculiar difficulties of the Italian migration to the United States, but also an unusual success, for the times and the way it was reached, leaving in that part of the world a memory of men, events and institutions

Urban Environmental Gentrification: Evaluating the Impact Large Green Infrastructure Projects Have On Urban Residents

With the rise of the environmental movement nationally and internationally, American cities are becoming increasingly focused on environmental initiatives to improve environmental quality, boost economic revenue, and better the quality of life for urban residents. Cities across the country have adopted the trend of implementing Large Green Infrastructure Projects, converting formerly developed but now unused areas into environment-oriented parks, based on the model project of the New York City High Line. While these projects benefit urban communities economically, socially, and environmentally, they often do so at the expense of minority and low-income residents. The Large Green Infrastructure Projects generally increase cost-of-living in their surrounding areas, displacing the at-risk communities unable to afford the higher cost in a process known as gentrification. In this research, I develop a methodology for quantitatively measuring the occurrence of gentrification, largely based on prior research with a similar goal. I apply the created methodology to several Large Green Infrastructure Projects in an attempt to validate the methodology and analyze gentrification occurring in surrounding neighborhoods. The analysis aims to show that gentrification in neighborhoods adjacent to the Large Green Infrastructure Projects has occurred at a greater rate than on a city-wide scale. The goal of this research is to identify project implementation as a primary cause for the displacement of low-income and minority urban residents; the application of my methodology will provide quantitative evidence for Large Green Infrastructure Projects being a cause of urban environmental gentrification. This research emphasizes the necessity for development companies and local housing authorities to implement better policies to protect low-income and minority housing during Large Green Infrastructure Project planning

Production of adsorbents derived from nut shells for H2S removal

The goal of this study is to investigate the removal of H2S from biogas, a sustainable gas made from the anaerobic digestion of organic waste, using adsorbents deriving from organic waste materials as precursors. The elimination of H2S is a critical step in biogas cleaning since this component can cause premature equipment deterioration, sulphur emissions as SO2 upon combustion and requires a significant cost. Due to the high cost of activated carbon, the key goal is to identify low-cost novel adsorbents for desulphurization. To this aim, different kind of nut shells were individuated among the wastes of the food industry, and walnuts and almond shells were selected for their large availability and specific properties as precursors of adsorbent materials. These two precursors were chosen because of the great production amounts available in both Italy and Spain; due to the high production, a substantial quantity of shells suitable for use as adsorbents may be obtained. In this study, both almonds and walnuts are produced in Spain, in particular originating in the municipality of El Arenal (Avila), located in the autonomous community of Castile and Leon. The experimental study was carried out in the Department of Chemical and Environmental Engineering at the University of Seville (US). To produce adsorbents, initially a jaw mill and a blade mill were used to grind the shells; then, an electromagnetic sieve was utilized to get the desired grain size; and finally, a tubular furnace was used for the activation steps, leading to the production of the final adsorbents. A fixed bed column was employed for the adsorption experimental campaigns, having a height of 430 mm and a diameter of 30 mm. Experimental tests were carried out at room temperature and atmospheric pressure, aiming at testing the H2S adsorption capacity of the produced adsorbents, while selecting the best performance for desulphurization of a model biogas.Universidad de Sevilla. Máster en Ingeniería Químic

Investigations of ternary Cu3SbS3 thin films as absorber in photovoltaic devices

Magnetron sputtered Cu-Sb metallic precursors were sulphidised on glass and molybdenum/glass substrates at 6 different temperatures. Two techniques were adopted for the elemental sulphidisation process. Precursors sulphidised using evaporated elemental sulphur were successfully converted into Cu3SbS3 solar absorber layers on molybdenum substrates. The as-sulphidised films exhibited p-type conductivity were produced in the limited response when analysed using a Eu+ electrolyte arrangement to measure the photocurrent. The films exhibited an energy bandgap value of 1.84eV

Diritto d\u27autore 2.0? Biblioteche e infrastrutture della conoscenza nelle proposte per la riforma della Legge 22 Aprile 1941 n. 633

La natura immateriale dell\u27opera dell\u27ingegno, oggi enfatizzata dalla de-materializzazione dei supporti, ne facilita la riproduzione e la circolazione e ci? rende questo tipo d

A Characterization of Complex-Valued Random Variables With Rotationally-Invariant Moments

A complex-valued random variable Z is rotationally invariant if the moments of Z are the same as the moments of W=e^{i*theta}Z. In the first part of the article, we characterize such random variables, in terms of vanishing unbalanced moments, moment and cumulant generating functions, and polar decomposition. In the second part, we consider random variables whose moments are not necessarily finite, but which have a density. In this setting, we prove two characterizations that are equivalent to rotational invariance, one involving polar decomposition, and the other involving entropy. If a random variable has both a density and moments which determine it, all of these characterizations are equivalent