Results 41 to 50 of about 3,493 (206)

Methodological Pathways for Circular Economy in Energy and Environmental Studies: A Structured Review Toward Sustainable Development

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT The circular economy (CE) has become a major focus in energy and environmental (E&E) research, as it helps advance sustainable development, improve resource efficiency and alleviate environmental pressure. Even so, the literature is still fragmented, particularly in the CE themes it explores, the levels of analysis it adopts and the methods ...
Jahira Debbarma   +2 more
wiley   +1 more source

EGNOS: il GPS Augmenting System per l'Europa

open access: yesGEOmedia, 2010
EGNOS: Europe's GPS Augmenting System Today, the actual positioning satellite technology allows a great number of civil applications for our life, but many of them are not yet achievable due to the low level of performance of the positioning service ...
Gianluca Pititto
doaj   +2 more sources

Evaluation of GNSS positioning accuracy from satellite-based augmentation systems in Thailand

open access: yesEngineering and Applied Science Research, 2022
Satellite Based Augmentation System (SBAS) provides correction message services as an additional system to navigation satellites. Several SBAS services exist in many regions and usually cover a large area. Although, Thailand is not geographically located
Phunsap Thari   +2 more
doaj  

Carbon Coking‐Tolerant Perovskite Catalyst Nd0.9Mg0.1Fe0.4Ni0.6O3 for Efficient Methane Dry Reforming

open access: yesCarbon and Hydrogen, EarlyView.
A new perovskite‐type catalyst Nd0.9Mg0.1Fe0.4Ni0.6O3 was developed for methane dry reforming, which exhibited 93.1% CH4 and 94.7% CO2 conversion with 100 h stability run and excellent anti‐coking capability, benefited from in situ exsolved Fe‐Ni alloy nanoparticles. ABSTRACT Perovskite with high temperature stability and tunability is a very promising
Zhenjie Wang, Xingchao Dai, Xinjiang Cui
wiley   +1 more source

Serum Bile Acids Concentrations and Liver Enzyme Activities after Low-Dose Trilostane in Dogs with Hyperadrenocorticism

open access: yesAnimals, 2023
Hyperadrenocorticism (HAC) often leads to vacuolar hepatopathy. The impact of trilostane treatment on serum total bile acids (SBAs) concentrations in dogs with HAC remains unknown.
Nannicha Tinted   +11 more
doaj   +1 more source

Porous Carbon Materials for Carbon Dioxide Capture

open access: yesCarbon Energy, EarlyView.
This work aims to address the current status and challenges associated with the regulation of pore structures, as well as the influence of pore structures on CO2 capture. Systematic quantitative analysis of structure–property relationships, combined with machine learning approaches, can effectively evaluate the contributions of structural ...
Zhifu Liu   +6 more
wiley   +1 more source

Authentication of Satellite-Based Augmentation Systems with Over-the-Air Rekeying Schemes

open access: yesNavigation, 2023
Here we delineate a complete satellite-based augmentation system (SBAS) authentication scheme, including over-the-air rekeying (OTAR), that uses the elliptic curve digital signature algorithm (ECDSA) and timed efficient stream loss-tolerant ...
Jason Anderson   +3 more
doaj   +1 more source

The Palladium(IV)‐Centered Hexatungstate Ion [PdIVW6O24]8−

open access: yesChemistry – A European Journal, EarlyView.
The first structurally characterized palladium(IV)‐containing polyoxotungstate was prepared, [PdIVW6O24]8− (PdW6), comprising a central 6‐coordinated PdIV ion surrounded by a ring of six edge‐shared WO6 octahedra. The redox chemistry of PdIV in PdW6 was investigated by electrochemistry.
Pooja Kulashri   +8 more
wiley   +1 more source

GPS-SBAS-Based Orbit Determination for Low Earth Orbiting Satellites

open access: yesInternational Journal of Aerospace Engineering, 2023
A space-based augmentation system (SBAS) provides real-time GNSS correction signals via geostationary satellites for near-ground GNSS users. To use the SBAS correction for low Earth orbit (LEO) satellites, the correction, especially the ionosphere ...
Mingyu Kim, Jeongrae Kim
doaj   +1 more source

Revisiting the synthesis of dimethyl carbonate from methanol and carbon dioxide

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract The process for producing dimethyl carbonate (DMC) from carbon dioxide (CO2) and methanol is explored in this article. It provides an overview of the thermodynamics involved in DMC synthesis, discussing the challenges and potential solutions. The article highlights the reported use of catalysts and dehydrating agents to improve DMC yield and ...
Diego Alexander Santos Araque   +3 more
wiley   +1 more source

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