Results 141 to 150 of about 36,017 (247)

Phase Transformations, Microstructural Effects, and Photocatalytic Activity of Tungsten Trioxide‐Geopolymer Composites

Journal of the American Ceramic Society, Volume 109, Issue 3, March 2026.
 . ABSTRACT Water and air pollution are pervasive issues, impacting the majority of global citizens. In response, geopolymers functionalized with photocatalytic metal oxides have emerged as sustainable materials for environmental remediation. This study examines how the Si/Al molar ratio (1 and 2) and photocatalytic WO3 loading (WO3/Al molar ratios of ...
Jamie Wilson, Xinyuan Ke, Daniel Maskell, Richard J. Ball   +3 more
wiley   +1 more source

Manufacturing and fabrication, part 3 [PDF]

The accessibility of material and energy off the Earth and the leverage that these nonterrestrial resources can exert on the space transportation system are important influences on the long-term goal of exploring the solar system.
Duke, Michael B., Haskin, Larry A., Sastri, Sankar   +2 more
core   +1 more source

Three‐Decade Dust Climatology and Trend (1988–2022) From Ground Monitoring Over the Western United States

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 4, 28 February 2026.
Abstract Airborne dust exerts myriad effects on climate, weather, human health and safety. In this study, 35‐year records (1988–2022) of ground aerosol observations were analyzed to identify windblown dust events from 18 Interagency Monitoring of Protected Visual Environments (IMPROVE) stations over the western United States (US).
Chang Shu, Daniel Tong
wiley   +1 more source

Coating for prevention of titanium combustion [PDF]

A limited number of coating options for titanium gas turbine engine components were explored with the objective of minimizing potential combustion initiation and propagation without adversely affecting component mechanical properties. Objectives were met
Anderson, V. G., Funkhouser, M., Mcdaniel, P.   +2 more
core   +1 more source

Ultrasonic flexural mode emitters: New approaches to increasing sound pressure during oscillation generation in gas media.

PLoS ONE
This work is devoted to the development and study of ultrasonic flexural-oscillating disk emitters for gas environments, generating elastic vibrations at ultrasonic frequencies (above 20 kHz) with high sound pressure levels required for energy-intensive ...
Vladimir Khmelev, Andrey Shalunov, Sergey Tsyganok, Alexandеr Sinkin, Pavel Danilov   +4 more
doaj   +1 more source

The Applications Technology Satellite apogee rocket motor - A summary report [PDF]

Design, testing, and development of solid propellant rocket engine for orbital transfer of Applications Technology ...
Anderson, R. G.
core   +1 more source

Project for the analysis of technology transfer Quarterly evaluation report, 13 Oct. - 12 Dec. 1968 [PDF]

Technical support package usage documentation by technology transfer analysis ...
Browne, T. D., Hayo, G. E., Hildred, W. M., Lessley, D. R., Morgan, R. O.   +4 more
core   +1 more source

Development of high voltage - High current switches Final report [PDF]

Envelope, electrode, and trigger design for high voltage high current ...
Price, H. N.
core   +1 more source

Rotor systems research aircraft predesign study. Volume 4: Preliminary draft detail specification [PDF]

The RSRA requirements are presented in a detail specification format. Coverage of the requirements includes the following headings: (1) aircraft characteristics, (2) general features of design and construction, (3) aerodynamics, (4) structural design ...
Linden, A. W., Miller, A. N.
core   +1 more source

Summary of activities of Aeronautics and Space Engineering Board [PDF]

Activities of the Aeronautics and Space Engineering Board (ASEB) are discussed with emphasis on space station ...

core   +1 more source