Peculiarities in produced particles emission in 208Pb + Ag(Br) interactions at 158 A GeV/c

The angular structures of particles produced in 208Pb induced collisions with Ag(Br) nuclei in an emulsion detector at 158 A GeV/c have been investigated. Nonstatistical ring-like substructures in azimuthal plane of the collision have been found and their parameters have been determined. The indication on the formation of the ring-like substructures from two symmetrical emission cones - one in the forward and other in the backward direction in the center-of mass system have been obtained. The ring-like substructures parameters have been determined. The experimental results are in an agreement with I.M. Dremin idea, that mechanism of the ring-like substructures formation in nuclear collisions is similar to that of Cherenkov electromagnetic radiation.Comment: 10 pages, 7 figures, Report at the HADRON STRUCTURE'04 Conference, Smolenice, Slovakia, 30.8.-3.9.200

Determination of the Absorption Coefficient and Cloudiness Multiplicity Attenuation During the Gamma-Radiation Passage

The paper presents background value equivalent dose of gamma-radiation investigation in different weather: clear cloudy and overcast. The change of the dose rate of gamma radiation, depending on the weather and the ability cloudiness to shield gamma rays is shown. A new method for eliminating the consequences of accidents at nuclear power plants or plants using radioactive elements is proposed. A calculation method of cloudiness coefficient absorption and cloudiness gamma-radiation multiplicity attenuation is developed. The gamma- radiation multiplicity attenuation and the absorption coefficient of gamma radiation were calculated

Propagation of Magnetic Fields from Electrical Domestic Appliances

The article presents a research into propagation of magnetic fields from electrical domestic devices. A safe distance at which magnetic induction does not exceed the background level is determined for each type of devices. It is proved that there are two stages of increasing magnetic induction as the distance from the source increases. At the first stage magnetic induction rises and electromagnetic field is formed. At the second stage exponential decrease of magnetic field induction takes place. Mathematical regularities of propagation of magnetic field from electrical domestic devices are experimentally educed

The study of the effect of aluminum powders dispersion on the oxidation and kinetic characteristics

Differential-scanning calorimetry (DSC) and thermogravimetric analysis (TG) were used to study micro-sized aluminum powder ASD-4 and nano-sized powder Alex. The dependence of the oxidation process on the dispersion of the sample particles is shown. The influence of thermogravimetric conditions on the thermal regime of the process was considered, and its kinetic parameters were determined. Calculations of the activation energy and the pre-exponential factor were carried out

International Legal Aspects of Fight against the International Terrorism: Problems of Legal Regulation

The article analyzes the legal problems existing in the regulation of relations that arose as a result of counteracting acts of international  terrorism; the provisions of Russian legislation and legal act of some  foreign states, as well as the principles and norms of international law in the field of combating terrorism are being examined; gaps and  contradictions in legal regulation in the antiterrorist sphere are revealed, which require legislative consolidation and international legal regulation

Natural concepts in elementary school pupils, their formation and psychological characteristics.

У статті подається розгорнута характеристика формування природничих понять у дітей молодшого шкільного віку на основі матеріалів власних експериментальних досліджень, узагальнення результатів досліджень інших авторів і вивчення передового досвіду вчителів. У статті висвітлено психологічні умови формування понять, а також науково обґрунтовано шляхи, засоби і методичні прийоми керівництва формуванням природничих понять учнів. The wide characteristic of the formation of natural concepts in the younger generation on the basis of the own experimental investigations is given in this article. The psychological conditions of the formation of these concepts are shown here. Ways, means, methodological principles of the formation of these natural concepts are scientifically motivated in this article.Роботу виконано на кафедрі теорії та методики природничо-математичнихдисциплін початкової освіт