Results 31 to 40 of about 1,091,359 (285)

Research on RDE performance for in-use vehicles especially at high altitude conditions in China [PDF]

open access: yesE3S Web of Conferences, 2022
The real driving emissions (RDE) of an in-use gasoline an in use diesel light-duty (LD) vehicle , both are SUV type, are studied based on portable emission measurement system (PEMS). The gasoline vehicle complying with emission standard of China 6 with a
Yan Feng, Zhao Haiguang, Yang Zhengjun
doaj   +1 more source

Photochemical emission and fixation of NOX gases in soils [PDF]

open access: yesScience of The Total Environment, 2020
Gaseous nitrogen oxides (NOx), which result from the combustion of fossil fuels, volcanic eruptions, forest fires, and biological reactions in soils, not only affect air quality and the atmospheric concentration of ozone, but also contribute to global warming and acid rain. Soil NOx emissions have been largely ascribed to soil microbiological processes;
Barrón, Vidal   +15 more
openaire   +8 more sources

A NOx Emission Model Incorporating Temperature for Heavy-Duty Diesel Vehicles with Urea-SCR Systems Based on Field Operating Modes

open access: yesAtmosphere, 2019
The selective catalytic reduction (SCR) is the most commonly used technique for decreasing the emissions of nitrogen oxides (NOx) from heavy-duty diesel vehicles (HDDVs). However, the same injection strategy in the SCR system shows significant variations
Xin Wang   +4 more
doaj   +1 more source

Water Injection Effects on the Performance and Emission Characteristics of a CI Engine Operating with Biodiesel [PDF]

open access: yes, 2012
Biodiesel is one of the most promising renewable, alternative and environmentally friendly biofuels that can be used in diesel engine without any need for any modification in the engine.
Gu, Fengshou   +11 more
core   +1 more source

Emission Characteristics of CI Engine Running with Biodiesel [PDF]

open access: yes
Biodiesel is one of the alternative fuels which is renewable and environmentally friendly and can be used in diesel engines with little or no modifications.
Gu, Fengshou   +3 more
core   +3 more sources

Biochar addition can reduce NOx gas emissions from a calcareous soil

open access: yesEnvironmental Pollutants & Bioavailability, 2019
The effect of biochar (BC) addition on NOx gas emissions was investigated from a calcareous soil. Application rates of zero (BC0), 1 (BC1), 2 (BC2), 5 (BC5), and 10 (BC10) percent weight/weight were used.
Bing Wang   +6 more
doaj   +1 more source

Investigation of In-Cylinder Steam Injection in a Turbocharged Diesel Engine for Waste Heat Recovery and NOx Emission Control

open access: yesEnergies, 2018
In this study, an in-cylinder steam injection method is introduced and applied to a turbocharged diesel engine for waste heat recovery and NOx emission reduction. In the method, cool water was first heated into superheated steam by exhaust.
Zhongbo Zhang, Lifu Li
doaj   +1 more source

A Novel Deep Learning Approach to Predict the Instantaneous NOₓ Emissions From Diesel Engine

open access: yesIEEE Access, 2021
Accurate and stable prediction of NOx emissions from diesel vehicles plays a crucial role in the establishment of virtual NOx sensors and the development and design of diesel engines. This paper presents a method for estimating transient NOx emissions by
Yang Yu   +5 more
doaj   +1 more source

Polymeric Sorbents as Energy‐Efficient Alternative to Cryogenic Distillation for Light Hydrocarbon Purification

open access: yesAdvanced Materials, EarlyView.
The transition from cryogenic distillation to polymeric sorbents for light hydrocarbon purification is crucial for energy and environmental sustainability. The polymeric sorbents are engineered to separate gas mixtures based on their specific properties.
Kelechi Festus   +9 more
wiley   +1 more source

S‐Nitrosothiols as Thiol‐Protecting Groups for Controlled Thiol‐Maleimide Crosslinking of Homogeneous Soft Hydrogels

open access: yesAdvanced Materials, EarlyView.
Rapid thiol‐maleimide addition frequently outpaces mixing, resulting in heterogeneous hydrogels. S‐nitrosothiols act as thiol‐protecting groups, allowing uniform mixing with maleimide‐functionalized polymers before gelation. Sodium thiosulfate or sodium ascorbate then regenerates thiols on demand, triggering controlled thiol‐maleimide crosslinking ...
Julian A. Serna   +7 more
wiley   +1 more source

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