The use of copper tailings as supplementary cementitious material can reduce the environmental impacts concrete production and mining industry. A key concern limiting its application is potential leaching toxic metals from matrix, especially copper. To analyze risk leaching, mechanisms by which entrapped in matrix were investigated, combining microscopic spectroscopic approaches. Decreasing wat...

Non-derivatised cellulose is generally assumed to have poor surface activity and therefore be unsuitable as a water in oil (W/O) emulsifier. In this work, “natural” microgel (CMG) fabricated via top-down approach used stabilize W/O emulsions, without employing chemical modification. The coagulated from an ionic liquid through solvent-exchange process, the presence absence of added sunflower oil...

Abstract The Seve Nappe Complex (SNC) comprises continental rocks of Baltica that were subducted and exhumed during the Caledonian orogeny prior to collision with Laurentia. tectonic history central SNC is investigated by applying in-situ zircon monazite (Th-)U–Pb geochronology trace element analysis (ultra-)high pressure (UHP) paragneisses in Avardo Marsfjället gneisses. Zircons Gneiss exposed...

Potassium feldspars (KAlSi3O8) are ubiquitous minerals in the Earth's upper crust. This family of has been subject numerous experimental and theoretical investigations concerning their dissolution kinetics mechanisms controlling chemical alteration at acid neutral pH, temperatures ranging from ambient to hydrothermal conditions. On other hand, considerably less research on behavior K-feldspars ...

We present various aspects of the saturation model which provides good description of inclusive and diffractive DIS at small x. The model uses parton saturation ideas to take into account unitarity requirements. A new scaling predicted by the model in the small x domain is successfully confronted with the data.

xiii CHAPTER ONE INTRODUCTION 1.0 Overview 1 1.1 Problem Statement 3 1.2 Objectives 3 1.3 Proposed Methodology 3 1.4 Thesis Outline 4 CHAPTER TWO LITERATURE REVIEW 2.0 Overview 5 2.1 Mathematical Approach 5

This review discusses briefly the preparation, electrochemistry, and electrogenerated chemiluminescence (ECL) as well as spectroscopic properties of organic nanoparticles. Organic nanoparticles, ranging from several tens of nanometers to hundreds of nanometers in diameter, were successfully prepared by various methods. Using a simple reprecipitation method, organic nanoparticles of a very small...

Global food security concerns have spurred increasing demand for locally sourced and produced K-fertilizers. Various processes been explored more than a century; one promising solution is based on the alkaline aqueous alteration of feldspar-rich rocks at elevated temperatures. However, knowledge overall physico-chemical reactions comprising dissolution feldspar precipitation secondary phases st...