Search results for "Illite"
showing 10 items of 74 documents
Environmental impact of mining activities on the Hermioni area, Greece
1993
Publisher Summary This chapter investigates the environmental impact of mining activities in the Hermioni area, Greece, including the offshore area. A chemical analysis of sediments associated with diabase lavas in the Hermioni mine area has shown significant enrichments in Fe, Mn, Zn, Cu, and As relative to normal pelagic clays. Marked geographic compositional variations within the Hermioni area have been observed, the highest metal enrichments found at Baroutospelia. Mineralogically the Fe–Mn sediments contain hematite, quartz, and minor amounts of illite, smectites, and feldspars. A chemical analysis of sulfide ore samples showed that the Hermioni ores are Cu-rich pyrites, always contain…
Pedogenesis in disturbed alpine soils (NW Italy)
2002
In alpine environments, natural or man-induced disturbances are fairly common and acknowledged as determining factors in pedogenesis and soil distribution. We have selected a representative alpine valley in the Italian Northwestern Alps to evaluate the effects of perturbations of different intensity and frequency on soil development and weathering during the last few centuries. In order of decreasing disturbances, we selected: (i) an active avalanche shoot; (ii) a man-built terrace; (iii) a park-like forest; and (iv) a coniferous forest. In the two most disturbed sites, independently of the intensity and frequency of the disturbances, the active pedogenic processes are restricted to the top…
Revista electrónica interuniversitaria de formación del profesorado
2016
La realidad socioeducativa actual demanda de los profesionales de la educación una intervención comprometida y coherente para el desarrollo de competencias y habilidades emocionales. Es necesario complementar lo académico y cuantificable con aquello que sobrepasa las barreras del centro e influye en el rendimiento y desarrollo personal y social del alumnado. Las relaciones que se dan entre los componentes de la triada emoción, pensamiento y acción regulan cada momento de nuestros días, pudiéndose ver estas alteradas negativamente por estímulos externos que en ocasiones, no somos capaces de gestionar adecuadamente. Esta incorrecta gestión emocional tiene su base en un creciente analfabetismo…
Le droit, les affaires et l'argent. Célébration du bicentenaire du Code de commerce, Actes des journées internationales de la Société d'histoire du d…
2008
Le droit, les affaires et l'argent fut le thème des Journées internationales de la Société d'histoire du droit, qui se sont déroulées à Dijon du 30 mai au 1er juin 2007, à l'occasion de la célébration du bicentenaire du Code de commerce. Cet ouvrage regroupe trente-huit articles d'histoire du droit consacrés à des périodes allant de l'Antiquité à nos jours et ce, dans toute l'Europe.
Kształtowanie kompetencji językowych młodszych uczniów w kontekście zapobiegania analfabetyzmowi funkcjonalnemu
2014
Variables cognitives i factors de personalitat dels subjectes amb millor control d’una Interfície Cervell Computadora
2022
Objectiu :La interrelació entre l’humà i la màquina en una tasca amb una Interficie Cervell-Computadora ( BCI de les sigles en anglès) es especialment transcendental. Hi ha subjectes incapaços d’aprendre a manipular-la( Illiteracy). El present treball analitza la influència del tipus de paradigma de control , les habilitats atencionals , els trets de personalitat i la resposta d’afrontament de la resposta davant el fracàs a l'hora d’utilitzar-la. Mètode: Hem emprat dues mostres de 89 i 191 estudiants de 1er i 2n curs de la Universitat de València en dos estudis consecutius els anys 2016 i 2017. S’han aplicat test de personalitat i qüestionaris sobre activitats rutinàries, avaluació atencion…
A Study on Acidification and Intercalation of Illite Clay Minerals and their Potential Use as a Filler in SPEEK Composite Membranes
2018
The acidification and intercalation of illite containing clays were studied for potential use as fillers for sulphonated poly (ether ether ketone) (SPEEK) composite membrane preparation and future proton exchange membrane fuel cells application. The acidification and dimethyl sulfoxide (DMSO) intercalation of illite clays have been studied by powder X-ray diffractometry, X-ray fluorescence spectrometry, and thermogravimetric analysis. SPEEK composite membranes were made with 1, 3 and 5% purified, acidified, DMSO intercalated clay fillers. SPEEK/clay composite membranes were characterized by proton conductivity, water uptake, and mechanical strength.
Comparison of Structure and Properties of Differently Treated Illite Clay and Products
2014
The investigation is focused on modification of the structure 2:1 sheet silicates - illite clay by subjecting them to chemical and microbiological impact. It is shown that alkaline activation of illite clay by sodium hydroxide leads to the slight structural changes mainly characterized by water link changes. The effect of bacteria Ps. fluorescens AM PS11on structure changes of illite is small and is influenced on rheology of treated clay.It is shown that the influence of chemical treatment on porosity, bulk density and increase of compressive strength of sintered ceramic samples is notable.
Investigations of Latvian Illite/Kaolinite Clays Irradiated Under Action of Accelerated Electrons
2019
Natural clay is a perspective material for application as sorbents for wastewater treatment as well as for sorption of radionuclides, where the properties of the clays can be changed under influence of ionizing radiation. For application of Latvian illite/kaolinite clays for isotope sorption it is important to characterize the physic-chemical properties of pre-prepared air dried clays. Two fractions of the illite clays were selected. A fraction with grain size 100 μm (SiO2 content 60.9 ± 1.5 wt.%, specific surface area 35 m2/g) and a sand free fraction – 2 μm (SiO2 47.7 ± 1.9 wt.%, specific surface area 38 m2/g). Selected fractions were irradiated with accelerated electrons (5 MeV, ELU-4, S…
Sûretés personnelles et réelles, fasc. n° 555, Juris-Classeur Droit international
2006
International audience