Results 1 to 10 of about 43,723 (166)

The first light curve solutions and period changes of EW Psc and HN Psc [PDF]

open access: yesNew Astronomy, 2020
The first light curve solutions of the stars EW and HN in Pisces constellation are presented. Photometry, and its' periodic changes are calculated and discussed. The analysis of O-C diagram done by MCMC approach in OCFit code and the new ephemeris provided for two binary systems. The light curve solutions obtained.
Fatemeh Davoudi, Átila Poro
exaly   +4 more sources

The Difference between Hot and Cold Deformation and its Effect on Microstructure and Mechanical Properties of Near Beta Titanium Alloy [PDF]

open access: yesMATEC Web of Conferences, 2020
An investigation of cold and hot deformation and the subsequent heat treatment including the annealing at the (α+β)- field temperature and ageing of VST55531 alloy showed that the material after the cold drawing without the heat treatment has the ...
Grebenchshikov A.S.   +2 more
doaj   +1 more source

Study of oxygen content in titanium alloys after exposure at elevated temperature [PDF]

open access: yesMATEC Web of Conferences, 2020
Isothermal oxidation testing of near α titanium alloys VT18U, VT20, Ti6Al7Nb and Ti6242S was performed in air at 560 °С for 1000 hours. Parameters of diffusion layer on the alloy surfaces were studied by microhardness indentations, optical microscopy, X ...
Kalienko M.   +3 more
doaj   +1 more source

All-ukrainian research and design institute of analytical instrumentation “Ukranalyt” celebrates its 45th anniversary [PDF]

open access: yesTekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2014
The paper describes history of creation and progress of the institute as a scientific organization. The information is presented on areas of scientific and technical activity, and the results obtained by the stuff during 45-years history of the ...
Dashkovsky A. A., Mikhejeva I. L.
doaj   +3 more sources

Research on transient synchronous stability of integrated grid-forming converters using power synchronization control

open access: yesZhejiang dianli, 2023
The proportion of the integrated converters using PSC (power synchronization control) in power systems is increasing year by year, but there is a lack of in-depth research on the transient synchronization stability.
XIANG Zhongming   +6 more
doaj   +1 more source

PEROVSKITES AND OTHER FRAMEWORK STRUCTURE CRYSTALLINE MATERIALS (BOOK' FIRST PAGES AND PREFACE)

open access: yesMaterials and Devices, 2021
Perovskites are among the most famous materials due to their exceptional properties: they present nearly all existing types of interesting properties, in particular as ferroics or multiferroics, they may be insulators, (super)conductors, or ...
Saint-Grégoire P., Smirnov M.
doaj   +1 more source

Spatial transcriptomics identifies enriched gene expression and cell types in human liver fibrosis

open access: yesHepatology Communications, 2022
Liver fibrosis and cirrhosis have limited therapeutic options and represent a serious unmet patient need. Recent use of single‐cell RNA sequencing (scRNAseq) has identified enriched cell types infiltrating cirrhotic livers but without defining the ...
Brian K. Chung   +4 more
doaj   +1 more source

Thermostable H1 hemagglutinin stem with M2e epitopes provides broad cross-protection against group1 and 2 influenza A viruses

open access: yesMolecular Therapy: Methods & Clinical Development, 2022
Hemagglutinin (HA) stem-based vaccines have limitations in providing broad and effective protection against cross-group influenza viruses, despite being a promising universal vaccine target. To overcome the limited cross-protection and low efficacy by HA
Jeeva Subbbiah   +10 more
doaj   +1 more source

ON MODERN APPROACH TO AIRPLANE-TYPE UNMANNED AERIAL VEHICLES DESIGN WITH SHORT TAKEOFF AND LANDING [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2017
This publication opens a series of review papers devoted to the current design problems of the next generation unmanned airplanes that are expected to appear in the period from 2025 to 2035. The series of papers considers airplanes with vertical take-off
Oleg P. Minin
doaj   +1 more source

Validating the Psychosocial Safety Climate Questionnaire – Integration of Findings from Cognitive Interviews in Germany and Sweden

open access: yesScandinavian Journal of Work and Organizational Psychology, 2019
Work-related stress and stress-related ill health are major concerns in modern Western societies. In the European Union, the joint Occupational Safety and Health (OSH) framework obliges employers to ensure the health and safety of workers in every aspect
Hanne Berthelsen   +3 more
doaj   +1 more source

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