Search results for "Sources"
showing 10 items of 2554 documents
Reverse osmosis and nanofiltration membranes for highly efficient PFASs removal: overview, challenges and future perspectives
2021
Today, it is extremely urgent to face the increasing shortage of clean and safe water resources, determined by the exponential growth of both world population and its consumerism, climate change and pollution. Water remediation from traditional chemicals and contaminants of emerging concerns (CECs) is supposed to be among the major methods to solve water scarcity issues. Reverse osmosis (RO) and nanofiltration (NF) membrane separation technologies have proven to be feasible, sustainable and highly effective methods for the removal of contaminants, comprising the extremely persistent and recalcitrant perfluoroalkyl substances (PFASs), which failed to be treated through the traditional water …
Il sistema delle relazioni tra Magrib al-aqsa e mondo arabo-ottomano in epoca sa'diana. Il ruolo degli ulama' a partire dalla produzione biografica
2012
The history of Islam has always been characterized by a system of continuous osmosis and interactions between Arabic West (Maġrib) and East (Mašriq). This study aims at analyzing the peculiar system of relationships between al-Maġrib al-aqṣā and al-dawla al-'uṯmāniyya during the Sa'dian period (16th - 17th centuries). Starting from the unexplored outstanding Arabic literary production - mainly maġribian biographical dictionaries (tarāǧim) and travel accounts (riḥlāt) - the author focuses on the uninterrupted system of ties and contacts (rawābiṭ and ṣilāt) among maġribian and mašriqian 'ulamā' as well as on the modalities of transmission of knowledges within the Arab-Islamic World. Through t…
L'eau et les territoires sahariens en Algérie, Mutations et enjeux
2007
International audience; Les rapports complexes et multiformes que les territoires entretiennent avec la question hydraulique prennent au Sahara une dimension toute particulière. Les mutations territoriales du XXe siècle qui l'ont caractérisé – urbanisation, accroissement démographique, intégration territorial... – ont remis en cause le fragile équilibre qui s'était institué depuis des siècles entre l'homme et son environnement. Ces mutations complexes ont engendré de nombreuses interrogations quant à la gestion actuelle et future de la question hydraulique au sein des territoires sahariens. Nous nous proposons ici de mettre en lumière quelques éléments permettant d'appréhender cette questio…
Water Consumption and Management in Schools in the City of Alicante (Southern Spain) (2000–2017): Free Water Helps Promote Saving Water?
2020
Studies on water in cities usually focus on household consumption. However, little attention has been given to non-household consumption and schools from a geographic perspective. The objectives of this research are to examine water consumption trends in schools in the city of Alicante (Southern Spain) between 2000&ndash
Les archives d'un précurseur des études nordiques : Eugène Beauvois
2007
International audience
A Contribution to Environmental Protection Through the Valorisation of Kitchen Biowaste
2022
The worldwide interest in Renewable Energy Sources (RES) is gathering momentum. Anaerobic Digestion (AD) process is steadily growing, as more people are setting up bioreactors in order to produce biogas and digestate. AD process is the fermentation of solid biowaste in the absence of oxygen and is zero emission, i.e. it is CO2 neutral. The aim of this work is to test HomeBiogas 2.0, i.e. a revolutionary equipment that used the kitchen biowaste from the canteen of the agricultural institute of Marsala (Trapani, Italy). This equipment works as a continuous flow bioreactor: the waste is fed in one end, while biogas and digestate come out from the other. The process continuously took place at a…
Developmental trends in children's pretend play.
1991
The developmental trends in pretend play were investigated in children 2-6 years of age (18 in each of five age groups) by examining changes in pretend action and speech separately. Play behaviour was assessed by using a selected set of Duplo Lego toys. Interest focused on occurrence of decentration, decontextualization and integration at different age levels. The proportions of decentred and decontextualized acts, action integrations and play themes, increased linearly with age. Changes in substitutive and inventive actions were, however, more minor than expected. Single-scheme combinations did not reveal any essential aspect of the development of children's symbolic competence. In this se…
Generation of TCR-Engineered T Cells and Their Use To Control the Performance of T Cell Assays
2015
Abstract The systematic assessment of the human immune system bears huge potential to guide rational development of novel immunotherapies and clinical decision making. Multiple assays to monitor the quantity, phenotype, and function of Ag-specific T cells are commonly used to unravel patients’ immune signatures in various disease settings and during therapeutic interventions. When compared with tests measuring soluble analytes, cellular immune assays have a higher variation, which is a major technical factor limiting their broad adoption in clinical immunology. The key solution may arise from continuous control of assay performance using TCR-engineered reference samples. We developed a simp…
Towards a microbial thermoelectric cell.
2013
Microbial growth is an exothermic process. Biotechnological industries produce large amounts of heat, usually considered an undesirable by-product. In this work, we report the construction and characterization of the first microbial thermoelectric cell (MTC), in which the metabolic heat produced by a thermally insulated microbial culture is partially converted into electricity through a thermoelectric device optimized for low ΔT values. A temperature of 41°C and net electric voltage of around 250–600 mV was achieved with 1.7 L baker’s yeast culture. This is the first time microbial metabolic energy has been converted into electricity with an ad hoc thermoelectric device. These results might…
Recovery of Lithium Carbonate from Dilute Li-Rich Brine via Homogenous and Heterogeneous Precipitation
2022
An extensive experimental campaign on Li recovery from relatively dilute LiCl solutions (i.e., Li+ similar to 4000 ppm) is presented to identify the best operating conditions for a Li2CO3 crystallization unit. Lithium is currently mainly produced via solar evaporation, purification, and precipitation from highly concentrated Li brines located in a few world areas. The process requires large surfaces and long times (18-24 months) to concentrate Li` up to 20,000 ppm. The present work investigates two separation routes to extract Li+ from synthetic solutions, mimicking those obtained from low-content Li+ sources through selective Li+ separation and further concentration steps: (i) addition of …