Results 41 to 50 of about 1,050 (178)

Compositional and source patterns of potentially toxic elements (PTEs) in soils in southwestern Ghana using robust compositional contamination index (RCCI) and k-means cluster analysis

Environmental Challenges, 2021
Soils are heavily impacted by geogenic and anthropogenic factors. They form an integral part in supporting agriculture, and the natural climate. This study investigated the soil chemistry in the Wassa and Prestea-Huni Valley areas in southwestern Ghana ...
Raymond Webrah Kazapoe, Ebenezer Ebo Yahans Amuah, Paul Dankwa, Kwabina Ibrahim, Benatus Norbert Mville, Sadique Abubakari, Naziru Bawa   +6 more
doaj   +1 more source

Low Temperature Combustion Modeling and Predictive Control of Marine Engines

Applied Sciences
The increase of popularity of reactivity-controlled compression ignition (RCCI) is attributed to its capability of achieving ultra-low nitrogen oxides (NOx) and soot emissions with high brake thermal efficiency (BTE).
Amin Modabberian, Xiaoguo Storm, Amir-Mohammad Shamekhi, Aneesh Vasudev, Kai Zenger, Jari Hyvönen, Maciej Mikulski   +6 more
doaj   +1 more source

Characteristics of Hydrogen‐Enriched Fuels in Spark and Compression Ignition Engines With Dual Injection System: A Bibliometric Study of Research Evolution

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
Recent fuel economy and stringent emissions concerns have stimulated the use of hydrogen in internal combustion engines and to drive dual‐fuel benefits. This paper explicitly conducted a bibliometric study of scholarly articles on hydrogen enrichment of diverse fuels in compression and spark ignition (SI) engines with dual injection systems (DIS ...
Solomon O. Giwa, Raymond T. Taziwa, Arun Thirumurugan   +2 more
wiley   +1 more source

Influence of biogas mixing parameters on the combustion and emission characteristics of diesel RCCI engine

Alexandria Engineering Journal, 2022
Reactivity-controlled compression ignition (RCCI) combustion involves in-cylinder fuels blending of varying reaction rates to enhance the combustion magnitude by stratification.
Mior A. Said, Ibrahim B. Dalha, Zainal A. Abdul Karim, Mohammed El-Adawy   +3 more
doaj   +1 more source

Optical Study and Numerical Simulation of the Effect of n‐butanol Mass on the Combustion Process of a n‐butanol/Diesel Dual‐Fuel Engine

Energy Science &Engineering, Volume 13, Issue 6, Page 2695-2706, June 2025.
An optical engine testing platform has been built. The influence of n‐butanol mass on the combustion process was studied in the RCCI combustion mode using intake injection of n‐butanol and direct injection of diesel in the cylinder. Using high‐speed imaging technology to capture the combustion process inside the cylinder, the dual color method is used ...
Wei Mingrui, Zhou Qian, Liu Jinping
wiley   +1 more source

Investigation on Influence of Acetylene Enrichment in Diesel Engines Operating With Microalgae‐Waste Plastic Oil‐Heptane Fuel Mixture

Energy Science &Engineering, Volume 13, Issue 6, Page 3107-3122, June 2025.
The graphical abstract depicts biodiesel production from algae and plastic waste via oil extraction, transesterification, and pyrolysis. These fuels were tested for diesel engine performance, improve combustion, and reduce emissions. ABSTRACT This study investigates the performance and emission characteristics of a diesel engine running on a blend of ...
Veeraraghavan Sakthimurugan, Devarajan Yuvarajan, Subbulakshmi Ganesan, Vijay J. Upadhye, Amandeep Gill, Nandagopal kailiappan   +5 more
wiley   +1 more source

Experimental Investigation on Spirogyra Biodiesel With Di‐Tert‐Butyl Peroxide as a Cetane Booster

Energy Science &Engineering, Volume 13, Issue 6, Page 3328-3341, June 2025.
Engine tested with third‐generation biodiesel. Cetane improver di‐tert‐butyl peroxide was added to improve combustion. The emissions analysis indicated a 53.8% CO decrease and a 9.1% NO rise to 24.9%. ABSTRACT This study investigates the impact of incorporating 30% spirogyra algae biodiesel (SBD30) with di‐tert butyl peroxide (DTBP) as a cetane booster
Aravind Samraj, Debabrata Barik, Kapura Tudu, Prabhu Paramasivam, Praveen Kumar Kanti, Abinet G. Ayanie   +5 more
wiley   +1 more source

Dual-Fuel Combustion for Future Clean and Efficient Compression Ignition Engines

Applied Sciences, 2016
Stringent emissions limits introduced for internal combustion engines impose a major challenge for the research community. The technological solution adopted by the manufactures of diesel engines to meet the NOx and particle matter values imposed in the ...
Jesús Benajes, Antonio García, Javier Monsalve-Serrano, Vicente Boronat   +3 more
doaj   +1 more source

Balancing Efficiency and Emissions: A Study on Biodiesel‐Hydrogen Dual‐Fuel Engine Performance Under Varying Injection Timings

Engineering Reports, Volume 7, Issue 5, May 2025.
This study explores the impact of varying injection timings on a biodiesel‐hydrogen dual‐fuel CI engine. Results reveal that IT30 optimizes brake thermal efficiency (32.7%) and reduces CO and HC emissions while slightly increasing NOx. Findings suggest IT30 as the optimal configuration for balancing efficiency and emissions. ABSTRACT The growing demand
Vasanthkumar Periyathambi, Manikandan Ezhumalai, Mohan Govindasamy, Ratchagaraja Dhairiyasamy, Deekshant Varshney, Subhav Singh   +5 more
wiley   +1 more source

Better than risk‐free: Reserve premiums and bank lending

Financial Review, Volume 60, Issue 2, Page 541-571, May 2025.
Abstract When the Federal Reserve first paid interest on excess reserves (IOER) in October 2008, banks faced a choice to earn a “better than” risk‐free rate, or lend to earn a higher, riskier rate. Evidence suggests the “reserves‐lending puzzle” is not driven by endogeneity from reverse causality, flight to safety, or increased Treasury supply, but by ...
Raymond Kim
wiley   +1 more source