Results 71 to 80 of about 94,728 (248)

A future for digital public goods for monitoring SDG indicators. [PDF]

open access: yesSci Data, 2023
Liang D   +15 more
europepmc   +1 more source

L-Band System Engineering - Concepts of Use, Systems Performance Requirements, and Architecture [PDF]

open access: yes
This document is being provided as part of ITT s NASA Glenn Research Center Aerospace Communication Systems Technical Support (ACSTS) contract NNC05CA85C, Task 7: New ATM Requirements-Future Communications, C-band and L-band Communications Standard ...
Henriksen, Stephen, Zelkin, Natalie
core   +1 more source

Trace Nickel Activated Biphasic Core‐CuOii/Shell‐CuOi Secondary Microspheres Enable Room Temperature Parts‐Per‐Trillion‐Level NO2 Detection

open access: yesAdvanced Engineering Materials, EarlyView.
An idea of designing novel sensors is proposed by creating appropriate Schottky barriers and vacancies between isomorphous Core‐CuOii/ Shell‐CuOi secondary microspheres and enhancing catalytic and spill‐over effects, and electronegativity via spontaneous biphasic separation, self‐assembly, and trace‐Ni‐doping.
Bala Ismail Adamu   +8 more
wiley   +1 more source

Screening analysis and selection of emission reduction concepts for intermittent combustion aircraft engines [PDF]

open access: yes
An analysis was conducted to screen, evaluate, and select three engine exhaust emission reduction concepts from a group of 14 candidate alternatives. A comprehensive literature search was conducted to survey the emission reduction technology state-of-the-
Meyers, J. E.   +3 more
core   +1 more source

A Concept of a Digital and Traceable Manufacturing Documentation Based on Formalized Process Description Applied on Composite Aircraft Moveable

open access: yesAdvanced Engineering Materials, EarlyView.
The documentation of component manufacture has become an essential part of today's production processes, especially for the analysis and optimization of production or component design with regard to structural performance, economic efficiency, and sustainability.
Björn Denker   +4 more
wiley   +1 more source

The impact of digital physical therapy during COVID-19 lockdown in children with developmental disorders: A qualitative study. [PDF]

open access: yesBraz J Phys Ther, 2022
Portillo-Aceituno A   +5 more
europepmc   +1 more source

Can Ti‐Based MXenes Serve as Solid Lubricants for Brake Applications? A Tribological Study

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores the first implementation of Ti‐based MXenes materials in brake pad friction composite material. The resulting composite material exhibits a 48% reduction in the wear rate; alongside significant improvements are observed for thermal and mechanical properties.
Eslam Mahmoud   +7 more
wiley   +1 more source

Modular automated microfluidic cell culture platform reduces glycolytic stress in cerebral cortex organoids. [PDF]

open access: yesSci Rep, 2022
Seiler ST   +14 more
europepmc   +1 more source

A control system design approach for flexible spacecraft [PDF]

open access: yes
A control system design approach for flexible spacecraft is presented. The control system design is carried out in two steps. The first step consists of determining the ideal control system in terms of a desirable dynamic performance.
Silverberg, L. M.
core   +1 more source

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