Results 71 to 80 of about 2,252,922 (304)

Surface Anthropogenic NOx Emissions Drive 1995–2014 Increase in Tropospheric Ozone: Implications for Ozone and Methane Radiative Forcing

Geophysical Research Letters
Tropospheric ozone influences Earth's radiative energy budget and has increased in recent decades. With initial‐condition ensembles from a single chemistry‐climate model, we show that global surface anthropogenic NOx emissions explain about 90% of the ...
Xinyuan Yu, Arlene M. Fiore, Jeffery R. Scott, Sebastian D. Eastham, Jean‐François Lamarque, Ragnhild B. Skeie, Stephanie Elkins   +6 more
doaj   +1 more source

Turbocharged Six-Cylinder Direct Injection Hydrogen Fueled Spark Ignition Engine Combustion and NOx Control Model

Engineering Perspective
Hydrogen fueled engines play an important role in carbon free emissions, and also replacing the expensive fuel cell system due to pure hydrogen production and high capacity batteries.
Shivakumar Nagareddy, Siva Subramanian Rajeswaran, Dhiyaneswaran Jaganathan, Vijaya Prakash Bala Subramanian, Veeramani Neelakandan   +4 more
doaj   +1 more source

Experimental Investigation of Minimum Achievable Nox from Low Carbon Fuels [PDF]

E3S Web of Conferences
Low carbon fuels face growing interest as the power generation and transportation fields embrace decarbonization. However, low carbon fuels may still introduce pollutant emissions challenges.
Emerson Benjamin, Wu David, Noble David, Steele Robert, Lieuwen Tim   +4 more
doaj   +1 more source

A top-down assessment using OMI NO2 suggests an underestimate in the NOx emissions inventory in Seoul, South Korea, during KORUS-AQ

Atmospheric Chemistry and Physics, 2019
. In this work, we investigate the NOx emissions inventory in Seoul, South Korea, using a regional ozone monitoring instrument (OMI) NO2 product derived from the standard NASA product.
D. Goldberg, P. Saide, L. Lamsal, B. de Foy, Zifeng Lu, J. Woo, Younha Kim, Jinseok Kim, M. Gao, G. Carmichael, D. Streets   +10 more
semanticscholar   +1 more source

Selective Catalytic Production of Urea: Unravelling the Pairwise Competition on p‐d Alloy Catalysts

Advanced Science, EarlyView.
Unraveling the complicated competition in urea electrosynthesis, this work investigates asymmetric p‐d alloys. We establish two stage‐specific descriptors, Anchoring Affinity and Coupling Propensity, to elegantly quantify thermodynamic bottlenecks.
Qingchao Fang, Yun Han, Md Tarikal Nasir, Fuyong Qin, Wanhu Tian, Hanqing Yin, Aijun Du   +6 more
wiley   +1 more source

Machine learning for forecasting factory concentrations of nitrogen oxides from univariate data exploiting trend attributes

International Journal of Advanced Nuclear Reactor Design and Technology
The development of post-processing technology for spent nuclear fuel is essential to ensuring the sustainable growth of nuclear energy. However, post-processing facilities release copious amounts of emissions with high concentrations of nitrogen oxides ...
Jiaxin Liu, Shuo Yang, Qichao Li, Leiming Ji, Xuefeng Hou, Liudong Hou, Jing Ma   +6 more
doaj   +1 more source

Ammonia- hydrogen combustion in a swirl burner with reduction of NOx emissions

Energy Procedia, 2019
Recently, ammonia is being considered for fuelling gas turbines as a new sustainable source. It can undergo thermal cracking producing nitrogen, hydrogen and unburned ammonia, thus enabling the use of these chemicals most efficiently for combustion ...
N. A. Hussein, A. Valera‐Medina, A. Alsaegh   +2 more
semanticscholar   +1 more source

Gas Sensing With Aerogels: A Critical Review on Structure‐Property Correlations and Performance Optimization

Advanced Science, EarlyView.
With high specific surface area, and adjustable interface, aerogel provides a multi‐functional platform for gas sensing. This review systematically links structural parameters (specific surface area, pore size, heterojunctions) to sensing metrics (sensitivity, selectivity, stability), critically evaluates optimization strategies, and outlines future ...
Hao Guo, Linheng He, Qinxin Wang, Man Yuan, Shoutian Qiu, Wei Liu, Sheng Cui   +6 more
wiley   +1 more source

Photochemical regimes in urban atmospheres: The influence of dispersion

Geophysical Research Letters, 2000
The dependence on emissions of urban photochemistry is studied under meteorological conditions favouring pollution episodes. We use a simple chemistry‐transport model, yet realistic with respect to the main chemical and physical processes and considering
Cécile Honoré, Robert Vautard, Matthias Beekmann   +2 more
doaj   +1 more source

Magneto‐NIR‐II‐Programmed Cascade Nanozymes Unlocking Blood–Brain Barrier Translocation and Autophagic Resistance in Glioblastoma

Advanced Science, EarlyView.
Magneto‐NIR‐II‐programmed NFSH nanozymes integrate magnetic blood–brain barrier (BBB) translocation, CD44 targeting, multimodal imaging, and cascade catalytic therapy for glioblastoma. Alternating magnetic fields and NIR‐II irradiation amplify ferroptosis, release H2S, suppress autophagic and mitophagic repair, and reshape the immune microenvironment ...
Ruocan Liu, Yundi Wu, Shuai Zhang, Hongjuan Zhao, Jiping Zheng, Shiyang Shao, Jianqiang Chen, Xilong Wu   +7 more
wiley   +1 more source