Phenomenological characteristic of the electron component in gamma-quanta initiated showers

The phenomenological characteristics of the electron component in showers initiated by primary gamma-quanta were analyzed on the basis of the Tien Shan experimental data. It is shown that the lateral distribution of the electrons ion gamma-quanta initiated showers can be described with NKG - function with age parameters bar S equals 0, 76 plus or minus 0, 02, different from the same parameter for normal showers with the same size bar S equals 0, 85 plus or minus 0, 01. The lateral distribution of the correspondent electron energy flux in gamma-quanta initiated showers is steeper as in normal cosmic ray showers

Analysis of the electron component of EAS at observational level 700 g x cm(-2) with a scale breaking interaction model and gammaisation hypothesis

Scale breaking model and gammaisation processes for high energies give a correct description of the longitudinal development of extensive air showers (E.A.S.). From the analysis of phenomenological characteristics of E.A.S. at Tien-Shan experiment, it follows that for energies near 10 to the 6 GeV the secondary particle multiplicity increases with energy faster than is predicted by the accepted scale breaking model

Search for excess showers from Crab Nebula

The arrival directions of muon poor showers registrated in the Tien Shan experiment during an effective running time about I,8.IO(4)h were analyzed. It is shown that there is a significant excess of these showers coming the direction of Crab Nebula

ТЕХНОЛОГИЯ СТРУЙНОЙ ГИДРОАБРАЗИВНОЙ ОЧИСТКИ ОТ КОРРОЗИИ СТАЛЬНЫХ ЛИСТОВ, ПРЕДНАЗНАЧЕННЫХ ПОД ЛАЗЕРНУЮ РЕЗКУ

Investigations executed by the BNTU “Shipbuilding and hydraulics” department have shown that rather efficient implementation of the requirements to the metal sheet surface designed for laser cutting can be achieved by using hydro-abrasive jet cleaning while applying water pump equipment with the range of pressure – 20–40 MPa. Type of working fluid plays a significant role for obtaining surface of the required quality. The conducted experiments have demonstrated that the efficient solution of the assigned problems can be ensured by using a working fluid containing bentonite clay, surface-active agent polyacrylamide, soda ash and the rest water.Исследования, проведенные в лаборатории кафедры «Кораблестроение и гидравлика» БНТУ, показали, что весьма эффективно выполнение требований к обрабатываемой поверхности под лазерную резку может быть достигнуто на основе использования струйной гидроабразивной очистки с использованием насосного оборудования, работающего в диапазоне давлений 20–40 МПа. Существенное значение для получения поверхности заданного качества имеет род рабочей жидкости. Проведенные исследования показали, что для решения поставленных задач может быть использована рабочая жидкость, содержащая бентонитовую глину, поверхностно-активное вещество полиакриламид, кальцинированную соду, остальное – вода

HYDRO-ABRASIVE JET CLEANING TECHNOLOGY OF STEEL SHEETS DESIGNED FOR LASER CUTTING

Investigations executed by the BNTU “Shipbuilding and hydraulics” department have shown that rather efficient implementation of the requirements to the metal sheet surface designed for laser cutting can be achieved by using hydro-abrasive jet cleaning while applying water pump equipment with the range of pressure – 20–40 MPa. Type of working fluid plays a significant role for obtaining surface of the required quality. The conducted experiments have demonstrated that the efficient solution of the assigned problems can be ensured by using a working fluid containing bentonite clay, surface-active agent polyacrylamide, soda ash and the rest water