The mechanical treatment as a method of Inorganic substances passive

The mechanopassivation effect of metal (II) oxides crystallizing by the structural type of halite under attrition treatment has been found out. For the assessment of the activity decrease the following has been investigated: solution and aquation kinetics of CaO and MgO in water and solutions; spinel and calcium carbide formation kinetics using oxides pretreated mechanically by different modes; kinetics of CO2 fixation and thermal desorption from the pretreated oxides surface; magnesia and phosphate cements set rate. It has been determined that the rate of studied processes with the participation of oxides subjected to attrition treatment reduces by a factor of tens and hundreds. We suppose the cause to be the removal of the rough loosened layers containing the most of defects from the polycrystalline aggregates surface. As that neighboring zones accommodate, their surfaces flatten and the bonding area rises. Separated smallest particles form compact aggregates. The powder density increase and sharper diffraction reflection form confirm the microstructure regulating. Flat surfaces with lower quantity of defects provoke the hypoactivity in regard to water vapors and carbon dioxide. The substances mechanopassivation study can be used to control the reaction rate with the participation of highly active reagents

Hadronization corrections to helicity components of the fragmentation function

In the hadronic decays of Z, gluon emission leads to the appearance of the longitudinal component of the fragmentation function, F_L. Measurement of F_L and the transverse component, F_T, could thus provide an insight into the gluon fragmentation function. However, hadronization corrections at low x can be significant. Here we present a method of accounting for such corrections, using the JETSET event generator as illustration.Comment: 11 pages, 5 figure

The NorduGrid architecture and tools

The NorduGrid project designed a Grid architecture with the primary goal to meet the requirements of production tasks of the LHC experiments. While it is meant to be a rather generic Grid system, it puts emphasis on batch processing suitable for problems encountered in High Energy Physics. The NorduGrid architecture implementation uses the \globus{} as the foundation for various components, developed by the project. While introducing new services, the NorduGrid does not modify the Globus tools, such that the two can eventually co-exist. The NorduGrid topology is decentralized, avoiding a single point of failure. The NorduGrid architecture is thus a light-weight, non-invasive and dynamic one, while robust and scalable, capable of meeting most challenging tasks of High Energy Physics.Comment: Talk from the 2003 Computing in High Energy Physics and Nuclear Physics (CHEP03), La Jolla, Ca, USA, March 2003, 9 pages,LaTeX, 4 figures. PSN MOAT00

Atlas Data-Challenge 1 on NorduGrid

The first LHC application ever to be executed in a computational Grid environment is the so-called ATLAS Data-Challenge 1, more specifically, the part assigned to the Scandinavian members of the ATLAS Collaboration. Taking advantage of the NorduGrid testbed and tools, physicists from Denmark, Norway and Sweden were able to participate in the overall exercise starting in July 2002 and continuing through the rest of 2002 and the first part of 2003 using solely the NorduGrid environment. This allowed to distribute input data over a wide area, and rely on the NorduGrid resource discovery mechanism to find an optimal cluster for job submission. During the whole Data-Challenge 1, more than 2 TB of input data was processed and more than 2.5 TB of output data was produced by more than 4750 Grid jobs.Comment: Talk from the 2003 Computing in High Energy Physics and Nuclear Physics (CHEP03), La Jolla, Ca, USA, March 2003, 7 pages, 3 ps figure

Agrolandscape ecotones potential for rational nature management

The article deals with matters of studying mechanisms of agrolandscapes adaptation to dynamic environment based on using environment - forming and environment - stabilizing potential of such landscape components as ecotones. Premised on results of ecotones research, obtained by the authors in the territory of Russia’s forest - steppe zone, the article suggests optimal parameters of the protective fo rest plantation system inclusive of ecotone

The beta-decay of 22Al

In an experiment performed at the LISE3 facility of GANIL, we studied the decay of 22Al produced by the fragmentation of a 36Ar primary beam. A beta-decay half-life of 91.1 +- 0.5 ms was measured. The beta-delayed one- and two-proton emission as well as beta-alpha and beta-delayed gamma decays were measured and allowed us to establish a partial decay scheme for this nucleus. New levels were determined in the daughter nucleus 22Mg. The comparison with model calculations strongly favours a spin-parity of 4+ for the ground state of 22Al

The structure and content of the achievements portfolio of university students

Introduction of the portfolio into the educational process requires precise regulation, systematization of its structure and content to attract students for filling it. The more students fill in the portfolio, the better becomes the quality of learning process. There were applied analysis, synthesis, induction and deduction for the purpose of studying the subject. The article denotes several definitions of the concept of portfolio. As a result, its essence was determined. The requirements for students have been established to fill it. Based on the “Regulations on the Portfolio of Achievements of Students of Kozma Minin Nizhniy Novgorod State Pedagogical University”, the functions of the portfolio were identified, and their content disclosed. The sections are given that are filled by students as well: educational activities, professional, research, public, cultural and creative, sports. According to our study it is worth to conclude that to improve the quality of education, the portfolio should be based on the principles of continuity, diagnostics, problem orientation, technological traceability criteria, scientific. It should have a clear structure and logical sequence of sections. As we have shown, the portfolio performs many pedagogical functions and has a positive effect on the personality of each student. The result of systematic participation in the compilation of a student's portfolio is developed abilities for self-organization, discipline, responsibility, the identification of strengths and weaknesses, and the elimination of learning gaps.peer-reviewe