Results 101 to 110 of about 21,342 (292)

Advanced low-NO(x) combustors for supersonic high-altitude gas turbines [PDF]

, 1977
The impact of gas-turbine-engine-powered aircraft on worldwide pollution was defined within two major areas of contribution. First, the contribution of aircraft to the local air pollution of metropolitan areas and, second, the long-term effects on the ...
Roberts, P. B.
core   +1 more source

Rational design of Ni‐based catalysts for methane dry reforming: Recent advances and future perspectives

FlexMat, EarlyView.
Addressing the challenges inherent in dry reforming of methane (DRM), this paper focuses on the structural design and performance optimization of Ni‐based catalysts. The modulation strategies for DRM are systematically reviewed across four dimensions: the micromorphology of active metals, metal‐support interactions, electronic modifications by ...
Bowei Cao, Junlei Zhang, Wanglei Wang
wiley   +1 more source

Maternal and neonatal outcomes in Gaza amid armed hostilities in 2025

International Journal of Gynecology &Obstetrics, EarlyView.
Abstract Objective This study documents facility‐based maternal, obstetric, and neonatal outcomes and associated conflict‐related exposures and living conditions among pregnancy‐related encounters at Al‐Helou Maternity Hospital in Gaza from late April to early September 2025, with a small number of additional encounters recorded at Al‐Shifa Medical ...
Shaymaa Abuhaiba, Younis Elijla, Aya El‐Dadah, Othman Nassar, Meran Abu‐Sultan, Maysaa Almasry, Hebatallah Alkhatib, Mahmoud Alsady, Amir Mahdi Ghafarian, Muath Alsarafandi, Lina Abumughessib, Arham Ali, Yassar Arain, Abeerah Muhammad, Belal Aldabbour, Shayan Ali, Bilal Irfan   +16 more
wiley   +1 more source

Delayed Detached Eddy Simulation of a Transverse Supersonic Jet into Hypersonic Crossflow

Space: Science & Technology
In both military and civil industries, the complex flow field induced by a jet exhausting has widespread applications, such as supersonic/hypersonic vehicle reaction control systems, thrust vector control systems on rocket motors, and supersonic ...
Jikui Ma, Yaofeng Liu, Yuwei Liu
doaj   +1 more source

Half a Century of Per‐ and Polyfluoroalkyl Substances in Northern Gannet Eggs: Impact of Regulations

Journal of Applied Toxicology, EarlyView.
ABSTRACT Per‐ and polyfluoroalkyl substances (PFAS), known as “forever chemicals”, are persistent organic pollutants that have been widely used in the industry across the globe for many decades. Their chemical stability, bioaccumulation, and toxicity pose major environmental and health risks. This study examines temporal trends in the concentrations of
Anaïs Fournier, Anaïs Kerric, Raphaël A. Lavoie   +2 more
wiley   +1 more source

Supersonic-combustion rocket [PDF]

, 1973
A supersonic combustion rocket is provided in which a small rocket motor is substituted for heavy turbo pumps in a conventional rocket engine. The substitution results in a substantial reduction in rocket engine weight. The flame emanating from the small
Franciscus, L. C., Weber, R. J.
core   +1 more source

Numerical investigation of high-pressure combustion in rocket engines using Flamelet/Progress-variable models

, 2014
The present paper deals with the numerical study of high pressure LOx/H2 or LOx/hydrocarbon combustion for propulsion systems. The present research effort is driven by the continued interest in achieving low cost, reliable access to space and more ...
Coclite A., Cutrone L., Gamal E., Jachimowski J., Marinov N., Meeks E., Prausnitz D., Reid R., Thomas J., Vingert L.   +9 more
core   +1 more source

Biobased Epoxidized Castor Oil Covalent Adaptable Networks Adhesives Reinforced with Recycled Carbon Fibers

Macromolecular Rapid Communications, EarlyView.
It is reported the design of biobased sustainable, smart, and functional adhesives achieved dispersing recycled carbon fibers into biobased epoxy monomer. ABSTRACT The development of sustainable, smart, and functional adhesives is crucial in advancing environmentally friendly materials.
Alberto Cellai, Rafael Turra Alarcon, Bernhard Sölle, Elisabeth Rossegger, Valentina Casalegno, Milena Salvo, Marco Sangermano   +6 more
wiley   +1 more source

The experimental clean combustor program: Description and status [PDF]

The objectives, program plan, schedule, pollution and performance goals, program approaches to pollution reduction, and status of the project are presented. Advanced supersonic transport and combustion noise programs are also discussed. The phases of the
Jones, R. E., Niedzwiecki, R. W.
core   +1 more source

Ignition and flame sptead in laminar mixing layers [PDF]

, 1994
In order to identify some of the mathematical problems encoun-tered in analyzing the ignition and ñame spread in mixing layéis, \ve shall describe the structure of the laminar mixing layer between two parallel streams of a fu el and air, initially ...
Liñán Martínez, Amable
core   +1 more source