—Specimens of Ti–Nb alloy were fabricated of mechanocomposite powder at the experimental installation of selective laser melting Luch; the thickness of the powder layer, the beam scanning velocity, ...and the laser radiation power were varied. It is revealed that the specimens with high density and homogeneous microstructure can be fabricated with the full melting of the powder layer under the conditions of optimization of the energy input. For leveling internal stresses, it is necessary to preheat the substrate, which will lead to reduction of the temperature gradient between the substrate and the layers, which are melted.
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EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, KILJ, KISLJ, MFDPS, NLZOH, NUK, OBVAL, OILJ, PNG, SAZU, SBCE, SBJE, SBMB, SBNM, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
Monte Carlo simulations of the short-time dynamic behavior are reported for three-dimensional weakly site-diluted Ising model with spin concentrations p=0.95 and 0.8 at criticality. In contrast to ...studies of the critical behavior of the pure systems by the short-time dynamics method, our investigations of site-diluted Ising model have revealed three stages of the dynamic evolution characterizing a crossover phenomenon from the critical behavior typical for the pure systems to behavior determined by the influence of disorder. The static and dynamic critical exponents are determined with the use of the corrections to scaling for systems starting separately from ordered and disordered initial states. The obtained values of the exponents demonstrate a universal behavior of weakly site-diluted Ising model in the critical region. The values of the exponents are compared to results of numerical simulations which have been obtained in various works and, also, with results of the renormalization-group description of this model.
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Many industrial robots are used in the automatic welding of large structures. However, more research is required on the monitoring of geometric defects in such structures (buckling, distortion, ...angular displacement, etc.). The possibility of assessing the geometric defects of large welded structures by using an industrial manipulator to measure the nonplanarity is analyzed.
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EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, KILJ, KISLJ, MFDPS, NLZOH, NUK, OBVAL, OILJ, PNG, SAZU, SBCE, SBJE, SBMB, SBNM, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
Nowadays robotic manipulators are in almost all industrial processes, especially in the food area. The rate of development for the robot industry are growing every year and respectively grows the ...number of conferences and exhibitions. However, there is a task in providing personnel training for tuning, control and maintenance manipulators. The goal of the present work is to describe the structure of application, principles of user interaction and base of the first year students education with developed software. Main advantage of proposed software has client-server architecture that allows to carry out tasks not only in high school or university, but also in the industry worldwide. Students requires a PC or any mobile device to run the application. Popular conceptions of internet education and free education would be provided. In addition, there is a possibility to add own static and dynamic object to scene thanks to the open source Blender software. This allows to develop large class of different student tasks. Another benefit is using open source graphical engine Blend4Web due to the fact that it avoids to install any additional software.
В статье сообщается о находке в ходе флористических работ на территории государственного природного заповедника «Кологривский лес» им. М. Г. Синицына (Костромская область) (ГПЗ «Кологривский лес») ...нового, аборигенного для флоры средней полосы Европейской России растения – Botrychium lanceolatum (S. G. Gmel.) Ångstr. (гроздовник ланцетовидный), который обнаружен при обследовании 60-летней вырубки. Сбор и определение выполнены автором статьи И. Г. Криницыным. Для Костромской области вид не указывается ни в одной флористической сводке по региону. Гербарные образцы надземной части спорофита хранятся в Гербарии Костромского государственного университета и ГПЗ «Кологривский лес», а также переданы в Гербарий Алтайского государственного университета (ALTB). B. lanceolatum – реликтовый вид лесной зоны Голарктики с фрагментарным ареалом преимущественно в субарктической, северной части умеренной и в горах теплоумеренной зон Евразии и Северной Америки. В России спорадически встречается в лесной зоне от Мурманской и Ленинградской областей до Камчатки и Сахалина включительно, в Арктику заходит на Чукотском полуострове. Вид редок на всей территории своего ареала, популяции представлены единичными особями. Включен во многие региональные Красные книги Российской Федерации. B. lanceolatum стал пятым видом семейства Botrychiaceae Nakai в птеридофлоре Костромской области (и средней полосы Европейской России в целом). В Костромской области вид находится на крайней южной границе ареала в средней полосе европейской части России. Популяция B. lanceolatum на момент находки была представлена 4 особями в различных онтогенетических состояниях. Приводятся данные о новом местонахождении и фитоценотических условиях произрастания вида, дано краткое морфологическое описание и сведения о динамике популяции.
We consider computer software for automated calculation of the dimensional relations of machines in terms of the rated values and tolerances, in the light of the selected method for ensuring ...precision.
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27.
A data acquisition system of the FODS setup Volkov, A. A.; Efremov, V. P.; Kalinin, A. Yu ...
Instruments and experimental techniques (New York),
07/2012, Volume:
55, Issue:
4
Journal Article
Peer reviewed
A data acquisition system of the focusing double-arm spectrometer (FODS) setup is described. The information from each recording electronic module is read in response to each trigger by an ЛЭ-74 ...high-speed controller with a buffer memory and is transmitted by a PCI-7200 extension card to the computer memory at the end of the spill. All crates are read in parallel, ensuring a high speed of operation of the system (8000 events per spill for one spectrometer arm). The system is able to read data from different detectors (drift chambers, proportional chambers, calorimeters, Cherenkov radiation ring spectrometer, etc.), possesses a high flexibility, i.e., ensures readout of information for several types of triggers (inclusive, arm coincidence, two particles in one arm, etc.), and enables calibration of detectors in each spill. The software is based on the MIDAS project with an open initial code and allows one to control operation of all detectors during experiments.
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DOBA, EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, IZUM, KILJ, KISLJ, MFDPS, NLZOH, NUK, OILJ, PILJ, PNG, SAZU, SBCE, SBJE, SBMB, UILJ, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
28.
Hadron calorimeters of the FODS setup Volkov, A. A.; Kalinin, A. Yu; Korablev, A. V. ...
Instruments and experimental techniques (New York),
07/2010, Volume:
53, Issue:
4
Journal Article
Peer reviewed
Designs of the hadron calorimeters for the FODS setup and the procedure for their calibration are described. Results of investigations of their characteristics on electron and hadron beams are ...presented.
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29.
Intensive beam monitors of the FODS spectrometer Volkov, A. A.; Efremov, V. P.; Ivanova, N. S. ...
Instruments and experimental techniques (New York),
03/2012, Volume:
55, Issue:
2
Journal Article
Peer reviewed
A monitoring system comprising ionization and scintillation monitors has been developed to measure the intensity and to control the quality of the beam at the FODS spectrometer. The system has been ...designed for operation with beam intensities of 10
4
–10
9
particles/s. The characteristics of the system components are presented.
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