Results 91 to 100 of about 3,258 (213)

Anti‐Aggregation and Surface Rearrangement Strategy for High‐Performance Pt‐Lean Alloy Catalysts in the Hydrogen Oxidation Reaction

Aggregate, Volume 7, Issue 1, January 2026.
A Pt‐lean alloy catalyst encapsulated within an ultrathin carbon shell is developed via an anti‐aggregation and surface rearrangement strategy. CO‐induced Pt segregation enriches surface Pt, boosting hydrogen oxidation reaction activity, while the carbon shell provides nano‐confinement to suppress particle aggregation.
Hyelim Park, Keonwoo Ko, Yunjin Kim, Sourabh S. Chougule, Abhishek A. Chavan, Namgee Jung   +5 more
wiley   +1 more source

Visible Light‐Driven Heterojunction Array Based on Type‐I In2S3/In2O3 for Selective Multi‐Gas Discrimination

Small, Volume 22, Issue 1, 2 January 2026.
Visible light activation has been explored for low‐temperature operation, prevention of material degradation, and safe gas sensing. A finely tuned type‐I band junction within the In2S3‐In2O3 heterostructure promotes efficient transfer of photogenerated excitons to the In2S3 surface, thereby maximizing surface reactivity under blue light illumination ...
Gi Baek Nam, Jaekwon Ko, Seungwook Choi, Sungkyun Choi, Jin Wook Yang, Hee Ryeong Kwon, Yeong Jae Kim, Jihwan Kwon, Jongchul Jeon, Ansoon Kim, Young‐Seok Shim, Seung‐Wook Baek, In‐Hyeok Park, Ho Won Jang, Ki Chang Kwon   +14 more
wiley   +1 more source

Evaluating Multipoint Sampling of Global‐Scale High‐Latitude Electrodynamics by the Geospace Dynamics Constellation

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract The Geospace Dynamics Constellation (GDC) mission aims to investigate the dynamic coupling between the magnetosphere, ionosphere, and thermosphere by resolving key spatiotemporal processes at scales ranging from local to global. A key aspect is GDC's ability to reconstruct hemispheric‐scale high‐latitude electrodynamics with comprehensive ...
J. S. Shim, R. M. Robinson, K. Garcia‐Sage, D. E. Rowland, F. Di Mare, J. Klenzing, G. Liu   +6 more
wiley   +1 more source

On-road vehicle emissions measurements show a significant reduction in black carbon and nitrogen oxide emissions in Euro 6c and 6d diesel-powered cars [PDF]

Atmospheric Chemistry and Physics
Real-world vehicle emissions measurement methods were developed to bridge the gap between laboratory tests and actual on-road emissions, including the variability in vehicles, drivers, and environmental conditions.
I. Ježek Brecelj, A. Gregorič, A. Gregorič, L. Zgonik, T. Rutar, M. Ivančič, B. Alföldy, G. Močnik, G. Močnik, M. Rigler   +9 more
doaj   +1 more source

Real world emissions performance of a HDD truckwith SCR NOx control [PDF]

, 2016
Air quality issues and Real Driving Emissions (RDE) in urban areas of cities Factors that influence RDE.
Andrews, GE, Dizayi, B, Hadavi, AS, Li, H, Tomlin, AS   +4 more
core  

An assessment of the real-world driving gaseous emissions from a Euro 6 light-duty diesel vehicle using a portable emissions measurement system (PEMS) [PDF]

, 2018
[EN] Recent investigations demonstrated that real-world emissions usually exceed the levels achieved in the laboratory based type approval processes. By means of on-board emissions measurements, it has been shown that nitrogen oxides emitted by diesel ...
Bermúdez, Vicente, Dolz, Vicente, Luján, José M., Monsalve-Serrano, Javier   +3 more
core   +1 more source

Testing and evaluating real driving emissions with PEMS [PDF]

, 2018
Testing of real driving emissions (RDE) with portable emission measuring system (PEMS) in an appropriate road circuit became an obligatory element of new type approval of passenger cars since September 2017. In several projects the Laboratory for Exhaust
Bonsack, Peter, Czerwinski, Jan, Engelmann, Danilo, Huber, Georg, Hüssy, Andreas, Remmele, Edgar, Zimmerli, Yan   +6 more
core   +1 more source

Optimisation of driving-parameters and emissions of a diesel-vehicle using principal component analysis (PCA) [PDF]

Light-duty diesel vehicles contribute significantly to urban air pollution. Laboratory-based standard driving test cycles do not take into account external driving factors, which greatly impact the vehicle emissions compared to the real-world driving ...
Bodisco, TA, Brown, RJ, Chu-Van, T, Hasan Shahariar, GM, Ristovski, Z, Sajjad, M, Suara, KA, Surawski, N   +7 more
core   +1 more source

Comparison of Tailpipe Gaseous Emissions for RDE and WLTC Using SI Passenger Cars [PDF]

, 2017
The drive characteristics and gaseous emissions of legislated Real Driving Emissions (RDE) test data from 8 different spark ignition vehicles were compared to data from corresponding Worldwide harmonized Light vehicles Test Cycle (WLTC) tests. The effect
Ge, Y, Li, H, Ropkins, K, Song, B, Thomas, D, Wang, X, Yu, W   +6 more
core   +1 more source

Research and Analysis of the Real-Time Interaction Between Performance and Smoke Emission of a Diesel Vehicle

Engineering Proceedings
In recent decades, environmental requirements for reducing the toxic components emitted from vehicle exhausts have decreased drastically. Technologies for after-treatment of diesel vehicle emissions are being improved continuously in order to meet ...
Iliyan Damyanov, Rosen Miletiev, Tsvetan Ivanov Valkovski   +2 more
doaj   +1 more source