Results 141 to 150 of about 51,359 (292)

Mars in situ propellants: Carbon monoxide and oxygen ignition experiments [PDF]

open access: yes
Carbon monoxide and oxygen were tested in a standard spark-torch igniter to identify the ignition characteristics of this potential Mars in situ propellant combination.
Groth, Mary F.   +2 more
core   +1 more source

Interfacial Ru–O–W Orbital Coupling Enables Lattice Oxygen Stabilization for Enhanced Acidic OER

open access: yesCarbon Energy, EarlyView.
A RuO2/WO3 electrocatalyst with strong interfacial Ru–O–W bonds exhibits optimized Ru–O interactions, enhancing intrinsic activity and stability for acidic OER. The WO3 support modulates the electronic structure of RuO2 and promotes oxo‐intermediate deprotonation, delivering a low overpotential of 203 mV at 10 mA cm−2 and sustained operation beyond 200 
Tongzhou Wang   +9 more
wiley   +1 more source

Extended temperature range ACPS thruster investigation [PDF]

open access: yes
The successful hot fire demonstration of a pulsing liquid hydrogen/liquid oxygen and gaseous hydrogen/liquid oxygen attitude control propulsion system thruster is described.
Blubaugh, A. L., Schoenman, L.
core   +1 more source

Ultra‐High‐Efficiency On‐Chip CO2 Conversion by Nanosecond Self‐Pulsing Micro‐Plasma Devices

open access: yesCarbon Energy, EarlyView.
A micro‐plasma chip with sub‐10‐μm electrode gaps is introduced for efficient CO2‐to‐CO conversion. The device self‐converts a DC power supply into nanosecond pulses, producing field‐emission electrons that vibrationally excite CO2, driving dissociation via the ladder‐climbing mechanism. A scaled‐up chip array achieves 30% single‐pass conversion and 50%
Guangyu Sun   +5 more
wiley   +1 more source

Preparing an Exsolvable Ru‐Substituted LaFeO3 Perovskite With High Surface Area From a Self‐Sacrificial Polymer Template: A Versatile Strategy for Enhanced Catalytic Performance

open access: yesChemistry – A European Journal, EarlyView.
High‐surface‐area LaFe0.9Ru0.1O3 is prepared by infiltration of porous Amberlite XAD16 polymer beads. Ru exsolution of this perovskite material leads to a supported catalyst with small Ru particles, exhibiting promising catalytic performance propane combustion.
Jaime Gallego   +4 more
wiley   +1 more source

Domestic electronic ignition on spark ignition engines

open access: yes, 1998
Se presenta la modificación del sistema de encendido convencional por ruptor, adaptado y construido a partir de los sistemas de encendido inductivo Bosch y Delco Remy; obteniéndose el sistema de encendido electrónico. Las pruebas experimentales se efectuaron en el motor Ford de cuatro cilindros ubicado en la Universidad Nacional de Ingeniería ...
Valderrama Romero, Andrés   +1 more
openaire   +1 more source

Powertrain of in-line five-cylinder spark ignition engine [PDF]

open access: yes, 2008
V úvodu práce je uvedeno základní rozdělení zážehových motorů a fáze činnosti zážehových motorů. Vlastní práce obsahuje výpočet termodynamického cyklu a výpočet maximálního tlaku ve válci, navrhnutí základních rozměrů pístní skupiny a pevnostní kontrola ...
Smetana, Roman
core  

Strong Implications From Small Deviations in Labeling Patterns: The Mechanism of Burkholderia gladioli Pacifigorgiadiene Synthase

open access: yesChemistry – A European Journal, EarlyView.
The mechanism of pacifigorgiadiene synthase from Burkholderia gladioli was investigated through isotopic labeling experiments and DFT calculations. The results revealed an unexpected labeling pattern which appeared to be different in the main and the side products, requiring unprecedented mechanistic explanations, including a “break‐flip‐cyclise ...
Zhiyong Yin   +6 more
wiley   +1 more source

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