Results 11 to 20 of about 7,734,591 (310)

Morphology and topogtaphy of carbide phase after alloying with hafnium and tantalum the ZHS3DK-VI

Авіаційно-космічна техніка та технологія, 2022
This study describes the results of studying the effect of modification/micro alloying with hafnium and alloying with tantalum on the morphology and distribution of the carbide phase in the ZhS3DK-VI alloy microstructure. The carbide phase is an integral
Tetiana Tykhomyrova, Olena Gordienko, Ruslan Bekhter, Oleksandr Podobnyj   +3 more
doaj   +1 more source

The Refugee Resettlement Scheme is the Golden Ticket but Very Scarce for Many in Africa: Prospects and Challenges During COVID-19

sozialpolitik.ch, 2022
The refugee resettlement scheme is a window of hope for millions of refugees across the globe. It is an opportunity that grants refugees a durable solution, especially those who cannot voluntarily return to their countries of origin due to fear of ...
John Bosco Nizeimana, Wesli Holt Turner, Solomon Tejada Brown, Glory Goneka   +3 more
doaj   +1 more source

Analysis of the influence of the place of water injection on the performance of turbofan engine with afterburner

Авіаційно-космічна техніка та технологія, 2023
An important direction for the development of high-speed aircraft is the expansion of the range of operation of aircraft engines as part of their power plants. Currently, the range of operation of aircraft engines in terms of altitude and flight speed is
Yurii Ulitenko, Maryna Minenok, Igor Kravchenko   +2 more
doaj   +1 more source

Features of the use of directional fixed antennas of a high-speed radio link on a small spacecraft AIST-2T

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2023
The correct installation of antenna-feeder devices on board a small spacecraft and the choice of their parameters make it possible to ensure the solution of target problems with high quality.
V. V. Eremina, I. O. Erkov, A. A. Zhuravlev, I. V. Maslov, N. I. Pyrinov   +4 more
doaj   +1 more source

On possibility of creating waveguide sound insulator based on MR material with metal inclusions [PDF]

Омский научный вестник, 2020
The problem of reducing the emitted vibrational energy through pipeline systems is relevant. The paper considers the fundamental possibility of constructing a waveguide silencer for pressure pulsations and hydrodynamic noise using MR material (metal ...
Yu. A. Burian, A. V. Zubarev, S. N. Polyakov, S. P. Bobrov   +3 more
doaj   +1 more source

Performance analysis of turbofan engine with afterburner with water injection at high-pressure compressor inlet

Авіаційно-космічна техніка та технологія, 2022
Aircraft capabilities determine the performance of the engine that powers it, and therefore, the creation of the latest high-speed aircraft is directly related to the development level of aircraft engine building.
Yurii Ulitenko, Maryna Minenok, Igor Kravchenko   +2 more
doaj   +1 more source

Investigation of the parameters of the process of turning on the afterburner of GTE

Авіаційно-космічна техніка та технологія, 2022
The subject of research in this article is the process of turning on the afterburner combustion chamber of a modern turbojet bypass engine. The parameters of switching in the afterburner were studied: pressure pulsations of the gas flow between the high-
Volodymyr Zhuravlyov, Yury Torba, Dmytro Pavlenko   +2 more
doaj   +1 more source

Analysis of the influence of the curvature, сonstriction of S-chaped channel and flight conditions on the efficiency of the bucket inlet device

Авіаційно-космічна техніка та технологія, 2022
When creating a modern aircraft, the principle of optimal integration of the power plant and the aircraft is used to ensure the maximum target function, determined by its functional purpose.
Oleg Zhornik, Ihor Kravchenko, Mykhailo Mitrakhovych, Ekaterina Balalaieva   +3 more
doaj   +1 more source

Proportion of Technical and Vocational Education and Training (TVET) and Distribution of Employment in Iran [PDF]

Strategic Research on Social Problems, 2023
IntroductionThe transition of graduates from various levels of the education system, whether it be from schools or universities, into the labor market has become a significant concern in many countries.
Mohammad Khademi Kolahlou, Behrooz Rahimi, Mohammad Javad Rahimi   +2 more
doaj   +1 more source

Persistent progress [PDF]

Cell, 2021
The highly effective and safe mRNA-based severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccines draw on decades of painstaking research to overcome the many hurdles for delivering, expressing, and avoiding toxicity of therapeutic mRNA. Cell editor Nicole Neuman talked with Dr. Katalin Karikó and Dr.
openaire   +2 more sources