Results 81 to 90 of about 17,054,748 (190)

Electron dynamics in high power impulse magnetron sputtering discharges

, 2019
Electrons are the main energy carriers in HiPIMS discharges and their properties govern the ionization processes and thus the discharge properties. The properties of the electrons are described by the fundamental plasma parameters, such as the electron ...
Čada, M., Gudmundsson, Jon Tomas,, Martin Čada, Jon Tomas Gudmundsson, Lundin, D., Daniel Lundin   +5 more
core   +1 more source

Comparative results of computational and theoretical study of the annular nozzle with a flat central body

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение
One of the ways to improve specific characteristics of the power plant of a launch vehicle for ladeploying payload to the near-Earth space is to provide the possibility of operation of a fixed nozzle in the design mode over the whole active leg of the ...
A. A. Kirshina, A. A. Levikhin, A. Yu. Kirshin   +2 more
doaj   +1 more source

Investigations of Chemical Nonequilibrium Two-Phase Flow in Solid Rocket Motor Nozzles

Aerospace
In this study, a calculation method for two-phase nonequilibrium flow in solid rocket motor nozzles is established, and an in-depth investigation into the nonequilibrium flow within the nozzle is conducted.
Tianhao Feng, Wei Zhao, Yan Ba, Yanchao Zhu, Yiwen Guan, Wenjing Yang   +5 more
doaj   +1 more source

Aerodynamic analysis of a 1.5 kW two-stage counter-rotating partial-admission impulse turbine for small-scale power system with a high expansion pressure ratio

Case Studies in Thermal Engineering
Partial-admission impulse turbine is suitable for small-scale power cycles with a high expansion pressure ratio (EPR) and a low mass flow rate. However, the exit velocity of a single-stage turbine is very high, leading to a large exit loss.
Ningjian Peng, Enhua Wang, Wenli Wang, Jinjun Lu, Minghua Li   +4 more
doaj   +1 more source

Assessment of adaptive properties of winter triticale cultivars by yield in the Middle Urals

Аграрная наука Евро-Северо-Востока
Triticale is a versatile crop with high yield potential but insufficient resistance to unfavourable growing conditions. Therefore, the combination of high yield, adaptability, plasticity, stability and stress resistance of varieties is of great ...
T. А. Babaytseva, I. N. Serebrennikova, E. F. Vafina, A. V. Milchakova   +3 more
doaj   +1 more source

Development of advanced technology for high voltage transformer winding condition control based on probing impulse of nanosecond duration

, 2018
The paper deals with the experimental research of the pulsed method of transformer winding control in comparison with FRA technology. A new approach to winding condition control technology is described. The proposed method is based on short (compared with a typical pulsed technology) probe pulse and front pulse durations.
Lavrinovich, A. V., Mytnikov, Aleksey Vladimirovich   +1 more
openaire   +1 more source

Partial discharge characteristics of insulation used in inverter-fed traction motor under high frequency impulse

, 2012
Stator insulation in inverter-fed traction motors may prematurely lose its function due to continuous square impulses voltage of converters, whose insulation failure mechanism is different from that under power frequency AC voltage. Partial discharge (PD)
Cao, Kaijiang, Wu, Guangning, Luo, Yang, Cui, Yi   +3 more
core   +1 more source

Ein CRM-System für neue Impulse in der Datenverwaltung - Konzipierung und Einführung von CiviCRM

, 2013
Impulse Basel ist eine Non-Profit-Organisation mit dem Ziel, die Integration von Menschen mit Behinderung in den ersten Arbeitsmarkt zu fördern. Hierfür verfügt Impulse Basel über ein breites Netzwerk von Kontakten.
Römer, Jan
core  

Finite Sample Properties of Impulse Response Intervals in SVECMs with Long-Run Identifying Restrictions [PDF]

This paper investigates the finite sample properties of confidence intervals for structural vector error correction models (SVECMs) with long-run identifying restrictions on the impulse response functions.
Ralf Brüggemann
core  

Error Bands for Impulse Responses [PDF]

We examine the theory and behavior in practice of Bayesian and bootstrap methods for generating error bands on impulse responses in dynamic linear models. The Bayesian intervals have a firmer theoretical foundation in small samples, are easier to compute,
Tao Zha, Christopher A. Sims
core