Results 101 to 110 of about 273,990 (313)

Information technology to improve the quality of information support systems provide consumers with the observation of air space [PDF]

, 2012
Робота присвячена варіанту підвищення якості інформаційного забезпечення споживачів на основі сумісної обробки інформації, поєднаної системами спостереження повітряного простору у складі первинного, вторинного та ідентифікаційного каналів, при формуванні
А.Э.Заволодько, G.E. Zavolodko, Г.Е. Заволодько, I.I. Obоd, І.І. Обод, M.Yu. Okhrymenko, И.И. Обод, М.Ю. Охрименко, М.Ю.Охрименко   +8 more
core  

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

Aerosol Air Qual Res [PDF]

Portable air cleaners (PACs) equipped with HEPA filters are gaining attention as cost-effective means of decreasing indoor particulate matter (PM) air pollutants and airborne viruses.

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Analysis-interference do interrogation systems observations of airspace [PDF]

, 2016
У статті наведено аналіз внутрішньосистемних завад систем спостереження повітряного простору таких як: вторинні системи спостереження, бортові системи попередження зіткнення, системи ідентифікації за ознакою «свій-чужий», системи ADS-B та TIS-B котрі ...
О.О. Стрельницький, А.О. Мерзлікін, А.А. Стрельницкий, Н.Е. Алферов, I.I. Obаd, A.A. Strelnickiy, А.О. Мерзликин, A.O. Merzlikin, І.І. Обод, М.Є. Алферов, N.E. Alferov, И.И. Обод   +11 more
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Experimental study on the anti-penetration characteristics of liquid-filled structure with air layer

Defence Technology
The study aims to explore the damage characteristics and protection technologies of liquid-filled structures under high-speed projectile impact. A series of penetration impact experiments were conducted by focusing on different air layer configurations ...
Mengmeng Wu, Jian Jin, Hailiang Hou
doaj   +1 more source

Comparing Building and Neighborhood-Scale Variability of CO2 and O3 to Inform Deployment Considerations for Low-Cost Sensor System Use

Sensors, 2018
The increased use of low-cost air quality sensor systems, particularly by communities, calls for the further development of best-practices to ensure these systems collect usable data.
Ashley Collier-Oxandale, Evan Coffey, Jacob Thorson, Jill Johnston, Michael Hannigan   +4 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Transient Simulation of Secondary Loop Mobile Air Conditioning Systems [PDF]

, 2018
Since the conventional refrigerant R-134a is being phased down due to its high GWP, finding a suitable replacement refrigerant with low GWP and a system design is of great importance.
Kim, Jaeyeon, Mei, Zhenyuan, Hwang, Yunho   +2 more
core   +1 more source

Spreadsheet Numerical Modeling in Secondary School Physics and Biology

Spreadsheets in Education, 2008
The paper gives three examples of numeric modeling with spreadsheets in secondary school (age 15+) physics and biology − free fall in the air, animal population, and damped oscillation. The aim is to introduce the reader to numeric modeling. The simplest
Jan Benacka
doaj   +2 more sources