269 research outputs found
On Schwinger-like pair production of baryons and new non-perturbative processes in electric field
We consider the Schwinger production of baryons in an external electric field
in the worldline instanton approach. The process occurs in the confinement
regime hence the holographic QCD and the Chiral Lagrangian are used as the
tools. The new exponentially suppressed processes in a constant electric field
involving the composite worldline instantons are suggested. These include the
non-perturbative decay of a neutron into a proton and charged meson and the
spontaneous production of and states
X-ray Analisis of the Powder of Micro- and Nanometer Fractions, Obtained from Wastes of Alloy T15K6 in Aqueous Medium
The results of conducting X-ray analysis of the powders, obtained by the electroerosive dispersing of
hard alloy wastes brand T15K6 in distilled water are presented. It was established experimentally, that
the obtained powder particles consist of the following main phases: W, TiC, W2C, WC, Co and CoO
KNOWLEDGE MANAGEMENT IN SOCIAL-ECONOMIC SYSTEMS AS AN INTEGRATED FUNCTION
The article deals with the analysis of existing theoretical approaches to knowledge management phenomenon. The peculiarities of knowledge manufacture and knowledge consumer in socially useful activities as one of the most important factor of innovative development of society are focused here. The problems of knowledge management system implementation into socialeconomic systems are revealed.knowledge management, innovative development, social-economic systems management.
Strategy for the realization soft docking with space debris by using tether system
This study focuses on a dynamics of a rendezvous of a tug and large space debris connected by a viscoelastic tether. It is assumed that a control is realized by changing the length of the tether. The goal is to study the dynamic of the maneuver of the rendezvous and to find the ways, which allow one to reduce the oscillation of the tether. The obtained results can be applied as applications for the tasks of implement rendezvous of two bodies using the tether
Fischparasiten in Mecklenburg-Vorpommern und nordeuropäischen Süßgewässern
Die Arbeit hatte zum Ziel, die Parasitenfauna von 10 häufigen Süßwasserfischen in den Binnengewässern Mecklenburg-Vorpommerns detailliert zu erfassen. Insgesamt konnten 74 einzellige und mehrzellige Parasitenarten in den 375 untersuchten Fischen nachgewiesen werden. Es konnten präzisere Identifikationsmethoden für Parasitenarten mit einem hohen Schadpotenzial für Fischzuchtanlagen erarbeitet werden. Zudem konnte ein für Flussbarsche hochpathogener Monogenea (Ancyrocephalus percae) und ein humantpathogener Namatoda (Eustrongylides Tubifex) erstmalig in norddeutschen Gewässern vorgefunden werden
Rendezvous of two spacecraft in LEO with use tether
This study focuses on a dynamics of a rendezvous of a tug and a large space debris
connected by a viscoelastic tether. It is assumed that the constant thrust acts on the space tug
and a control is realized by changing the length of the tether. The goal is to find the control law
that provides a soft docking of two bodies on an orbit. Three-body system with an additional
damping device is also considered. The obtained results can be applied as applications for the
tasks of implement rendezvous of two bodies using the tether.This work is supported by the Russian Foundation for Basic Research, Project No. 17-41-630274-
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