Results 81 to 90 of about 24,248 (166)

A passive infrared ice detection technique for helicopter applications [PDF]

open access: yes
A technique has been developed, and successfully tested, to detect icing remotely on helicopter rotor blades. Using passive infrared (IR) thermometry it is possible to detect the warming caused by latent heat released as supercooled water freezes. During
Dershowitz, Adam L.   +1 more
core   +1 more source

A Comprehensive Review of Waste‐Derived Materials for Solar Still Performance Enhancement

open access: yesAdvanced Materials Interfaces, Volume 13, Issue 9, 5 May 2026.
Solar desalination reduces energy use and produces freshwater sustainably, but its productivity is limited and cannot meet rising demand. Thus, solar desalination system improvements are sought to boost water productivity. Waste materials are abundantly available and burden the environment, making them low‐cost enhancers for solar desalination systems.
A. S. Abdullah   +6 more
wiley   +1 more source

NASA propulsion controls research [PDF]

open access: yes
Multivariable control theory is applied to the design of multiple input and output engine controls. Highly-accurate, real-time engine simulations are utilized for control development and checkout.
Teren, F.
core   +1 more source

Pre‐analytical guidelines for blood and CSF Biomarkers 2025: Recommendations from the NACC ADRC Biofluid Biomarker Best Practices Workgroup

open access: yesAlzheimer's &Dementia, Volume 22, Issue 5, May 2026.
Abstract The Biofluid Biomarkers Best Practices Workgroup of the National Alzheimer's Coordinating Center–Alzheimer's Disease Research Center (ADRC) Biomarker Core Steering Committee was convened to update pre‐analytical handling guidelines for biofluid biomarkers, focusing on cerebrospinal fluid (CSF) and blood.
Timothy E. Van Meter   +21 more
wiley   +1 more source

Probing Interfacial Reaction Pathways in Atomic Layer Deposition on Sulfide Superionic Conductors

open access: yesSmall Structures, Volume 7, Issue 5, May 2026.
Atomic layer deposition of Al2O3 on the sulfide superionic conductor Li6PS5Cl proceeds via reactions with native OH, SH, and PS3‐OH surface groups, enabling immediate nucleation and conformal sub‐nanometer coatings. Spectroscopic measurements combined with theory reveal reversible surface chemistry that preserves the sulfide framework, providing ...
Kyobin Park   +13 more
wiley   +1 more source

Aeronautical Engineering: A special bibliography with indexes, supplement 67, February 1976 [PDF]

open access: yes
This bibliography lists 341 reports, articles, and other documents introduced into the NASA scientific and technical information system in January ...

core   +1 more source

Structure–Property Relationships in Fluorine‐Free Ionic Liquids and Salts Utilising the Acesulfame Anion

open access: yesChemSusChem, Volume 19, Issue 8, 28 April 2026.
Fluorine‐free acesulfame‐based ionic liquids and salts were synthesized and comprehensively analysed, revealing how anionic structure governs key physicochemical properties, paving the way towards safer and more sustainable electrolytes for clean energy storage.
Wern Huay Mah   +3 more
wiley   +1 more source

Accessibility Design and Operational Considerations in the Development of Urban Aerial Mobility Vehicles and Networks [PDF]

open access: yes
Urban aerial mobility vehicles and networks have recently gained considerable interest in the aviation community. These small, short-range vehicles with all-electric or hybrid-electric propulsion systems, tailored to metropolitan aerial transportation ...
Young, Larry A.
core   +1 more source

Improving Oxygen Barrier Performance of Polylactide Film by Using Bleached and Unbleached Nanocellulose From Grape Pomace

open access: yesJournal of Applied Polymer Science, Volume 143, Issue 14, April 10, 2026.
Bleached and unbleached nanocelluloses were produced from the exhausted grape pomace and applied as coatings on PLA substrates for sustainable food packaging. Unbleached nanocelluloses were more hydrophobic and amorphous than bleached ones. The resulting bio‐based bleached nanocellulose‐coated PLA films showed a 68% reduction in O2 permeability ...
Jingwen Chen   +6 more
wiley   +1 more source

INTELSAT 4 in orbit liquid slosh tests and problems in the theoretical analysis of the data [PDF]

open access: yes
The destabilizing effect of the liquid on attitude nutation stability was determined from an extensive series of inorbit tests. The liquid slosh driving frequency ratio (rotor nutation frequency/rotor spin rate) was varied over the range of 0.58 to 0.70 ...
Slabinski, V. J.
core   +1 more source

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