Results 121 to 130 of about 176,726 (304)

Effects of a New Triple-alpha Reaction on X-ray Bursts of a Helium Accreting Neutron Star

open access: yes, 2012
The effects of a new triple-$\alpha$ reaction rate (OKK rate) on the helium flash of a helium accreting neutron star in a binary system have been investigated.
Fynbo   +7 more
core   +1 more source

Inferring rheumatoid arthritis disease activity status from the electronic health records across health systems

open access: yesArthritis &Rheumatology, Accepted Article.
Objective Disease activity plays a central role in rheumatoid arthritis (RA) clinical studies. The inconsistent availability of data on disease activity in real‐world electronic health records (EHR) data has limited the ability to generate real‐world evidence (RWE). This study aimed to develop and validate scalable machine learning (ML) models to infer
David Cheng   +34 more
wiley   +1 more source

Ignition and combustion characteristics of metallized propellants [PDF]

open access: yes
Research designed to develop detailed knowledge of the secondary atomization and ignition characteristics of aluminum slurry propellants was started. These processes are studied because they are the controlling factors limiting the combustion efficiency ...
Mueller, D. C.   +2 more
core   +2 more sources

Bioprospecting Ulleungdo‐isolated microalgae for carbon valorization and utilization

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract The growing demand for renewable energy alternatives has intensified global interest in microalgae as versatile bioresources for carbon valorization and bioenergy production. Owing to their rapid growth and biochemical versatility, microalgae provide a sustainable route for converting captured carbon into bioenergy and high‐value products ...
Ha‐Neul Choi   +5 more
wiley   +1 more source

Analysis of Energy Transfer in the Ignition System for High-Speed Combustion Engines

open access: yesEnergies
In order to produce reliable and reproducible ignition of lean fuel–air mixtures and highly stratified mixtures, it is necessary to ensure a high concentration of spark discharge energy and to provide a strong energy impulse for the triggering of chain ...
Filip Szwajca   +2 more
doaj   +1 more source

Combustion-wave ignition for rocket engines [PDF]

open access: yes
The combustion wave ignition concept was experimentally studied in order to verify its suitability for application in baffled sections of a large booster engine combustion chamber.
Liou, Larry C.
core   +1 more source

Life cycle assessment of biodiesel synthesis from waste cooking oil using bifunctional heterogeneous catalyst

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract The development of renewable energy sources is important in order to achieve the United Nations Sustainable Development Goals (SDGs). Waste cooking oil (WCO) is a promising feedstock for biodiesel production through transesterification. Heterogeneous bifunctional catalysts offer a sustainable alternative to conventional homogeneous bases such ...
Frederick Jit Fook Phang   +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

Operationalizing BioSSbD: A safe‐and‐sustainable‐by‐design framework for biorefineries

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Biorefineries are central to the transition toward a circular bioeconomy; however, their increasing scale and technological heterogeneity, and the integration of biological, chemical, and thermochemical processes introduce complex challenges related to safety, sustainability, and operational reliability. Existing Safe‐and‐Sustainable‐by‐Design
Fernando Ramonet
wiley   +1 more source

Mechanical Properties and Ignition Performance of Rare Earth Reactive Materials under Impact Loading

open access: yesGaoya wuli xuebao
Aluminum (Al), a commonly used reactive metals, is widely applied in reactive material systems. However, its relatively low reactivity restricts the energy release of systems.
Shoujia LI   +8 more
doaj   +1 more source

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