Results 131 to 140 of about 367,217 (307)

A Comparison of Inlet Valve Operating Strategies in a Single-Cylinder Spark-Ignition Engine [PDF]

open access: yes, 2009
This experimental work was concerned with comparison of inlet valve actuation strategies in a thermodynamic single cylinder spark ignition research engine equipped with a mechanical fully variable valvetrain on both the inlet and exhaust.
Aleiferis, PG   +3 more
core  

Advanced Separators for Liquid and Quasi‐Solid Lithium Rechargeable Batteries: Design and Development

open access: yesAdvanced Materials, EarlyView.
This review traces the evolution of lithium‐ion battery separators from passive barriers to multifunctional components central to cell safety and performance. Polymer‐ceramic hybrids, nanofiber architectures, and bio‐derived membranes deliver ionic conductivities above 3 mS cm−1, thermal stability beyond 200 °C, and effective suppression of lithium ...
Karthik Vishweswariah   +5 more
wiley   +1 more source

Joint Optimization of Route and Speed for Methanol Dual-Fuel Powered Ships Based on Improved Genetic Algorithm

open access: yesBig Data and Cognitive Computing
Effective route and speed decision-making can significantly reduce vessel operating costs and emissions. However, existing optimization methods developed for conventional fuel-powered vessels are inadequate for application to methanol dual-fuel ships ...
Zhao Li, Hao Zhang, Jinfeng Zhang, Bo Wu
doaj   +1 more source

Experimental mnd Modeling Investigation of The Performance Characteristics on Diesel Hcci with Hydrogen Additive- A Review [PDF]

open access: yes, 2010
Homogeneous charge compression ignition (HCCI) combustion has been attracting considerable attention due to higher efficiency with lower nitrogen oxide (NOx) and particulate matter (PM) emissions.
Lemos, Daniel Dantas   +1 more
core   +1 more source

Wafer‐Scale 2D High‐Entropy Transition Metal Dichalcogenide Thin‐Film Catalysts for Efficient and Durable Photoelectrochemical Hydrogen Production

open access: yesAdvanced Materials, EarlyView.
A wafer‐scale 2D high‐entropy (MoWTaNbRu)S2 thin‐film catalyst with a distorted 1T phase integrated onto p‐Si photocathode is designed for highly efficient and durable photoelectrochemical hydrogen evolution reaction. The high‐entropy effect in layered transition metal dichalcogenides optimizes hydrogen adsorption energetics, accelerates photogenerated
Sang Eon Jun   +14 more
wiley   +1 more source

Productivity and transition in Swedish iron and steel, 1870-1940 [PDF]

open access: yes, 2007
This paper would like to analyse how Swedish iron and steel entrepreneurs reacted to the strains of increasing competition on world markets which affected the industry between 1870 and 1940. It implicitly searches for readjustments taken by the sector
Houpt, Stefan
core   +1 more source

Plasmonic Nanomachines: Creating Local Potential Gradients and Motions

open access: yesAdvanced Materials, EarlyView.
Plasmonic nanomachines can generate optical, thermal, and chemical potential gradients to drive directional rectilinear, rotational, and twisting motions at the nanometer scale. The integration of multimodal plasmonic forces with functional materials and programmed structural distortions enables precise spatiotemporal actuation, thereby providing a ...
Yoonhee Kim   +3 more
wiley   +1 more source

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