Surface spin flip probability of mesoscopic Ag wires

Spin relaxation in mesoscopic Ag wires in the diffusive transport regime is studied via nonlocal spin valve and Hanle effect measurements performed on permalloy/Ag lateral spin valves. The ratio between momentum and spin relaxation times is not constant at low temperatures. This can be explained with the Elliott-Yafet spin relaxation mechanism by considering the momentum surface relaxation time as being temperature dependent. We present a model to separately determine spin flip probabilities for phonon, impurity and surface scattering and find that the spin flip probability is highest for surface scattering.Comment: 5 pages, 4 figure

Kinetics and mechanism of synthetic CoS oxidation process

The results of investigation of kinetics and mechanism for synthetic a-CoS oxidation process are presented in this paper. Based on experimental data obtained using DTA and XRD analysis and constructed PSD diagrams for Co-S-O system, mechanism of synthetic a-CoS oxidation process is suggested. Characteristic kinetic parameters were obtained for experimental isothermal investigations of desulfurization degree using Sharp method

Education and Quality of Life at Work – Towards the Prevention and Overcoming of Mobbing

The paper defines the current phenomenon of mobbing at work, who are primary and secondary victims, who are mobbers and what is the nature of their relationship. Also, through the description of the types of mobbing, you get an insight into the conditions, relationships, and the organizational environment in which mobbing is occured, how it manifests and conducts. An integral part of this work is summarizing the causes of mobbing, drawing attention to the organization’s responsibility for its occurrence and upkeep. In order to point out the importance of solving this problem, special area is devoted to summarize the direct and indirect consequences that mobbing leaves on employee, his/her family, friends, colleagues, superiors, the organization, but also the state and society. In this way, the insight into the complexity of this phenomenon is obtained, how and to what extent it can affect the quality of life of the victim, both at work and in private life. The worrying fact is that mobbing happens very often, at all hierarchical levels, among employees of different personality, status and power profiles, so it is difficult to prove it and therefore sanction it. There are various organizations and authors who point out the significance of this problem, its prevention, ways of overcoming and sanctioning it. This paper discusses various tools, measures and strategies to combat mobbing. It highlights and emphasizes the power of education, various types of information, awareness raising, counseling, training of all employees, primarily in the prevention, but also overcoming mobbing, and thus improving the quality of life at work

The clay minerals from greda deposit

The term "clay" refers to natural materials composed of fine minerals, which in their composition contain water molecules, which give it the property of plasticity, which is lost by drying processes. The basic physical and chemical characteristics of clay are low permeability, the possibility of cation exchange, thermal structural stability, swelling processes. These characteristic properties appear as a consequence of the crystal structure, in which the layers of SiO4, tetrahedra, extend infinitely in two dimensions. In this paper are presented the basic structural and crystallochemical properties of clay from Greda deposit

Multiphase Model of Career Support for Students – Example from Practice

This paper describes a multiphase model of work with students of Andragogy at Faculty of Philosophy in Belgrade, which can be used as an example of good practice and aims to prepare students for the increasingly complex challenges of career management and provide comprehensive support for their career development. The paper deals with each stage of the model: Studying the theory of occupational choice and development, which is a part of the program of the course Andragogy of Work; Active Job Search, training for students (as a part of the same course); Visits to two relevant institutions (National Employment Service and institution that conducts some of the forms of vocational education, which is inextricably related to the management of "changing careers"). The last stage of the model is professional practice of students, organized in cooperation with “GIZ“ and “The Professional orientation on transition to secondary schooling Project“ which allow students to test their skills as a trainer and career counselor for high school students. Given the fact that in Serbia there are increased efforts aimed at improving the quality of career management activities, the paper considers how each phase corresponds to the activities of “changing careers“ management and how this model prepares students to self-manage their careers. Also, this paper offers proposals for career management activities that can be conducted in the courses that students attend, all with the goal of a comprehensive career development support for students. Furthermore, considering the fact that the process of career management is a lifelong process that begins long before the "entrance" of the world of work, this paper considers in what ways students can participate in career counseling for high school students, as well as how both sides benefit from it

EXAMPLES OF LCA METHODOLOGY IMPLEMENTATION IN STEEL INDUSTRY

Steel industry kept pace with actual trends for environmental protection in many ways – through different technological improvements considering environment protection, important share of recycling in the steel production, design of so called “eco-steels”, materials designed according to recent environmental directives and legislatives, etc. In the frame of steel production monitoring, LCA methodology is very important for obtaining an accurate environmental picture of a process, due to the fact that the process should be evaluated over its entire life cycle. A number of tools and methodologies have been developed in recent years to assess the potential environmental impacts associated with a product, process or activity during its entire life cycle. The examples of Life Cycle Assessment (LCA) are used by large steel industrial companies as potentially helpful tool for improving the production processes, efficiency of resource utilization and significantly reduction of waste generation and emissions are presented in this paper