37 research outputs found
Metodologie analitiche nel settore cosmetico. Analisi di sostanze relative agli allegati della Legge 713/86.
No full textConsignation des sommes représentatives du montant des travaux de remise en état d'un site
No full textInternational audience(TA Amiens, 4 avr. 1995, Société CICAL c/ Préfet de l'Aisne, req. n° 941-788.
CONSIDERATIONS ON THE RELATIVE EFFICACY OF ALUMINUM SULPHATE VERSUS POLYALUMINUM CHLORIDE FOR IMPROVING DRINKING WATER QUALITY
No full textThis study presents the evolution of specific parameters of raw water quality from the Strâmtori-Firiza Lake, which is the raw water source of the water plant in Baia Mare town, Romania. Parameters such as temperature, turbidity, oxidability were recorded over a four years’ period. A comprehensive database on the evolution of these water parameters was thus created showing the tendency of these parameters across time. The possible correlations among the parameters were investigated. Positive correlations were found for oxidability and Al content and also for turbidity and oxidability. Temperature and turbidity were found to be highly variable (2-17°C, 3-53 NTU) across seasons. In order to improve the turbidity of treated water, two coagulants were tested: basic polyaluminum chloride (PAC) and aluminum sulphate (SA) evaluating the efficiency of the two treatment methods. While the traditionally used aluminum sulphate was found to be effective only when the temperature and turbidity were high: temperature >10ºC, turbidity >10 NTU (nephelometric turbidity unit), PAC emerged as an efficient clarifying agent even at low temperature and turbidity
CONSIDERATIONS ON THE RELATIVE EFFICACY OF ALUMINUM SULPHATE VERSUS POLYALUMINUM CHLORIDE FOR IMPROVING DRINKING WATER QUALITY
No full textThis study presents the evolution of specific parameters of raw water quality from the Strâmtori-Firiza Lake, which is the raw water source of the water plant in Baia Mare town, Romania. Parameters such as temperature, turbidity, oxidability were recorded over a four years’ period. A comprehensive database on the evolution of these water parameters was thus created showing the tendency of these parameters across time. The possible correlations among the parameters were investigated. Positive correlations were found for oxidability and Al content and also for turbidity and oxidability. Temperature and turbidity were found to be highly variable (2-17°C, 3-53 NTU) across seasons. In order to improve the turbidity of treated water, two coagulants were tested: basic polyaluminum chloride (PAC) and aluminum sulphate (SA) evaluating the efficiency of the two treatment methods. While the traditionally used aluminum sulphate was found to be effective only when the temperature and turbidity were high: temperature >10ºC, turbidity >10 NTU (nephelometric turbidity unit), PAC emerged as an efficient clarifying agent even at low temperature and turbidity
Science in the schools - the Extreme Energy Events project
No full textThe Extreme Energy Events (EEE) project aims to study extended air showers from high energy cosmic rays and extreme energy events by detecting the muon component of the shower. To achieve this goal, a network of muon telescopes has been installed in high schools distributed all over Italy. Each muon telescope consists of three large area (80 × 160 cm2) Multigap Resistive Plate Chambers (MRPCs). Each MRPC has 24 pickup strips read out at both ends; the hit position along the strip is thus deduced from the time difference. This design offers pointing capability, so that the muon direction can be reconstructed. The project has been conceived by Prof. A. Zichichi in order to rekindle the interest of young people in science and give them a first-hand experience of scientific research
Science in the Schools: The Extreme Energy Events project
No full textThe Extreme Energy Events (EEE) project, a cosmic ray physics experiment, is at the sametime an excellent outreach project. Its scientific goal is the study of extended air showers from high energy cosmic rays and extreme energy events by detecting the muon component of the shower. To this aim, a network of muon
telescopes has been installed in high schools distributed all over Italy; each telescope consists of three planes of Multigap Resistive Plate Chambers which allow the reconstruction of the muon direction. The search for extended air showers is based on the search for coincidences between telescopes. The project was conceived by Prof. A. Zichichi in order to interest high school students in science and give them a hands-on experience of scientific researc
A 1 V Bandgap Reference in 7-nm FinFET with a Programmable Temperature Coefficient and an Inaccuracy of ±0.2% from −45°C to 125°C
No full textHistological examination of the male gonad of hybrid specimens: Microtus savii x M.brachycercus (Rodentia-Arvicolinae)
No full textVolume: 48Start Page: 1End Page:
NA50 final results on charmonia suppression
No full textThe most recent and final results from the NA50 experiment on charmonia production in Pb-Pb interactions at 158 GeV/c per nucleon are presented. A strong J/? suppression is observed, which increases with the centrality of the collisions. The J/? production is found to be anomalously suppressed starting at mid-centralities, when compared to a reference obtained from proton-induced collisions. The most recent developments on the determination of this normal absorption curve are explained. It is also shown that for sulphur-induced reactions there is full agreement with the extrapolated normal p-A behaviour. The suppression of ?? production in heavy ion collisions (Pb-Pb and S-U) is also presented. It is seen to increase with the centrality of the collision and to be significantly stronger than the one measured in proton-induced reactions. ? 2006 IOP Publishing Ltd
