Results 71 to 80 of about 3,258 (213)

Ultrafast Electron Transfer Coupled with a Proton Relay in an Anisotropic Dual S‐Scheme Heterojunction for Overcoming Kinetics Mismatch in H2O2 Photosynthesis

Advanced Science, EarlyView.
An anisotropic dual S‐scheme heterojunction (C3N4/SubPc‐1/C3N5) is constructed to overcome the electron–proton kinetics mismatch in photocatalytic H2O2 production. The imide bridge serves as a dual channel for ultrafast electron transfer and proton relay, synergistically enabling efficient dual‐pathway oxygen reduction and achieving a high H2O2 ...
Bing Wang, XiangBo Feng, Yao Liu, XinYi Wang, EnZhou Liu, YuZhen Zhao, ZongCheng Miao, Zhuo Li   +7 more
wiley   +1 more source

Influence of Metal Species and Content of Fe‐Ni‐Poly(heptazine imides) on their Properties as Electrocatalysts for Zinc‐Air Batteries

Advanced Energy Materials, EarlyView.
Iron/nickel‐modified poly(heptazine imides) are efficient, low‐cost bifunctional electrocatalysts for the oxygen reduction and evolution reactions in aqueous zinc–air batteries. Iron enhances oxygen reduction, while nickel single‐atoms deliver oxygen evolution activity comparable to RuO2.
Franz Jacobi, Rudolf Frank Baumgart, Robert Leiter, Marius Hermesdorf, Sri Rezeki, Alexander Kemmesies, Christof Neumann, Andrey Turchanin, Christopher Schlesiger, Simon Fleischmann, Desirée Leistenschneider   +10 more
wiley   +1 more source

Päästömittausstandardit sekä testikäytännöt Euroopassa ja Yhdysvalloissa [PDF]

, 2018
Opinnäytetyön tavoitteena oli selvittää vuonna 2017 voimaan tulleita päästömittausten standardimuutoksia Yhdysvaltojen sekä Euroopan alueella. Muutokset ovat tapahtuneet pääosin EPA Tier 3- ja Euro 6 -standardeissa ja niiden rakenteissa.
Skiathitis, Mihalis
core  

Structural design and property regulation of organic polymers for photocatalytic synthesis of H2O2

InfoScience, EarlyView.
Photocatalytic synthesis of H2O2 offers a sustainable approach. Photocatalytic efficiency depends critically on interfacial electron transfer kinetics and spatial charge separation. Herein, we systematically analyze key factors governing photogenerated carrier dynamics and propose engineered strategies to optimize performance, thereby providing design ...
Mingyang Xu, Rongchen Shen, Yingyin Mo, Guijie Liang, Shijie Li, Peng Zhang, Xiaobo Chen, Youji Li, Xin Li   +8 more
wiley   +1 more source

Emission Factors Derived from 13 Euro 6b Light-Duty Vehicles Based on Laboratory and On-Road Measurements

Atmosphere, 2019
Tailpipe emissions of a pool of 13 Euro 6b light-duty vehicles (eight diesel and five gasoline-powered) were measured over an extensive experimental campaign that included laboratory (chassis dynamometer), and on-road tests (using a portable emissions ...
Victor Valverde, Bernat Adrià Mora, Michaël Clairotte, Jelica Pavlovic, Ricardo Suarez-Bertoa, Barouch Giechaskiel, Covadonga Astorga-LLorens, Georgios Fontaras   +7 more
doaj   +1 more source

Real Driving Emissions—Conception of a Data-Driven Calibration Methodology for Hybrid Powertrains Combining Statistical Analysis and Virtual Calibration Platforms

Energies, 2021
The combination of different propulsion and energy storage systems for hybrid vehicles is changing the focus in the field of powertrain calibration. Shorter time-to-market as well as stricter legal requirements regarding the validation of Real Driving ...
Sascha Krysmon, Frank Dorscheidt, Johannes Claßen, Marc Düzgün, Stefan Pischinger   +4 more
doaj   +1 more source

Particle Number (PN) - Portable Emissions Measurement Systems (PEMS): Heavy Duty Vehicles Evaluation phase at the Joint Research Centre (JRC) [PDF]

, 2016
JRC evaluated the feasibility of using PN-PEMS systems for Heavy Duty Vehicles (HDV) applications. The main evaluation phase took place between February and June 2016.
GIECHASKIEL Barouch, GRIGORATOS THEODOROS, MENDOZA VILLAFUERTE PABLO, RICCOBONO FRANCESCO   +3 more
core   +1 more source

Extending the hyper‐logistic model to the random setting: New theoretical results with real‐world applications

Mathematical Methods in the Applied Sciences, EarlyView.
We develop a full randomization of the classical hyper‐logistic growth model by obtaining closed‐form expressions for relevant quantities of interest, such as the first probability density function of its solution, the time until a given fixed population is reached, and the population at the inflection point.
Juan Carlos Cortés, Ana Navarro‐Quiles, Sorina Madalina Sferle   +2 more
wiley   +1 more source

Testing and evaluation of cold-start emissions from a gasoline engine in RDE test at two different ambient temperatures

Open Engineering, 2021
In order to better reflect the actual ecological performance of vehicles in traffic conditions, both the emission standards and the applied emission tests are being developed, for example by considering exhaust emissions for a cold engine start.
Pielecha Jacek, Skobiej Kinga, Kurtyka Karolina   +2 more
doaj   +1 more source

System Design Considerations for Magneto‐Electrocatalysis of the Oxygen Evolution Reaction

Small, EarlyView.
Electrocatalytic water‐splitting can be controlled using a magnetic field. The commercial prospects are exciting, but the progress is stuck in the fundamental stage of research. Progress is stagnated by publications with conflicting results, incomplete analysis, and inconsistent experimental setups.
Dorottya Szalay, Amy Radford, Yiyang Li, Shik Chi Edman Tsang   +3 more
wiley   +1 more source