Results 41 to 50 of about 21,411 (266)

Chemical nonlinearities in relating intercontinental ozone pollution to anthropogenic emissions [PDF]

, 2009
Model studies typically estimate intercontinental influence on surface ozone by perturbing emissions from a source continent and diagnosing the ozone response in the receptor continent.
Wu, Shiliang, Wild, Oliver, Jacob, Daniel, Duncan, Bryan N., Jacob, Daniel J., Fiore, Arlene M.   +5 more
core   +1 more source

Tailored Catalytic Microenvironments Enable Efficient Electrochemical Ammonia Production

Advanced Science, EarlyView.
This study shows that Co2+ substitution in inverse spinel FeFeCoO4 constructs an integrated catalytic microenvironment for efficient nitrate‐to‐ammonia reduction. Jahn–Teller distortion activates Fe sites for *H generation, while hard–soft acid–base regulated dual‐metal sites optimize proton‐coupled electron transfer and intermediate adsorption ...
Qi Zhang, Peimiao Zou, Huimin Zhang, Alex J. Brown, Yingjie Song, Marc Walker, Yisong Han, Kui Xie, Shanwen Tao   +8 more
wiley   +1 more source

Robust control applied to minimize NOx emissions [PDF]

2014 IEEE Conference on Control Applications (CCA), 2014
— Legislation concerning pollutant emissions of diesel passenger cars is becoming increasingly restrictive, especially for nitrogen oxide (NOx) and particulate matter (PM). This article proposes to apply a CRONE control design methodology on a diesel engine in order to adapt the air-path and fuel-path of the engine and minimize NOx emissions.
Nelson-Gruel, Dominique, Chamaillard, Yann, Charlet, Alain, Colin, Guillaume   +3 more
openaire   +2 more sources

Influence of CeO2 on NOx emission during iron ore sintering

, 2009
The evolution of NOx during coke combustion in the presence and absence of CeO2 was studied in a quartz fixed bed reactor. The distribution of CeO2 in the coke was examined by SEM.
Chen, Yanguang, Wang, Zhi, Guo, ZC, Guo, Zhancheng   +3 more
core   +1 more source

Bioinspired Interfacial Hydration Engineering via Metal–Organic Frameworks for Efficient Nitrate‐To‐Ammonia Conversion in Neutral Media

Advanced Science, EarlyView.
Inspired by Nitrite reductase, a metal–organic framework overlayer is introduced to regulate the interfacial hydration microenvironment on Cu electrodes, enriching hydrated K+ species that act as efficient proton donors. This strategy enables nitrate‐to‐ammonia conversion with near‐unity selectivity at industrial‐level current densities in neutral ...
Yuyin Mao, Minghui Zhang, Xiangdong Xue, Chengyu Guo, Jian Liu   +4 more
wiley   +1 more source

Multi-model simulations of the impact of international shipping on Atmospheric Chemistry and Climate in 2000 and 2030 [PDF]

, 2007
The global impact of shipping on atmospheric chemistry and radiative forcing, as well as the associated uncertainties, have been quantified using an ensemble of ten state-of-the-art atmospheric chemistry models and a predefined set of emission data.
COLLINS W.J., LAWRENCE M., J. M. Rodriguez, Dentener, F. J., Isaksen, Ivar S. A., Butler, Tim, Richter, Andreas, Collins, W. J., Gauss, Michael, BUTLER T., EYRING Veronika, K. Sudo, Isaksen, I.S.A., Lawrence, M.G., Isaksen, I. S. A., LAUER Axel, ELLINGSEN K., Stevenson, D. S., van Noije, T.P.C., Dentener, Frank J., M. G. Lawrence, K. Ellingsen, VAN NOIJE T., HAUGLUSTAINE D., Lawrence, M. G., Strahan, S. E., Hauglustaine, Didier A., van Noije, Twan P.C., Szopa, S., A. Richter, Stevenson, D.S., M. Gauss, Sud, K., Collins, William J., van Noije, T. P. C., Lauer, A., I. S. A. Isaksen, Wild, Olivier, SZOPA S., Rodriguez, J. M., STEVENSON D.S., SUDO K., Lawrence, Mark G., Wild, O., Ellingsen, Kirsten, GAUSS M., Sudo, K., Lauer, Axel, WILD O., Strahan, Susan E., Hauglustaine, D. A., M. Sanderson, S. Szopa, S. E. Strahan, A. Lauer, T. P. C. van Noije, Stevenson, David; id_orcid, Laval-Szopa, Sophie, V. Eyring, O. Wild, Eyring, V., D. A. Hauglustaine, DENTENER Franciscus, D. S. Stevenson, T. Butler, Sanderson, M., Sudo, Kengo, W. J. Collins, RICHTER A., F. J. Dentener, Strahan, S.E., Ellingsen, K., Hauglustaine, D.A., Butler, T., Dentener, F.J., Eyring, Veronika, SANDERSON M.G., Sanderson, Michael, STRAHAN S., Collins, W.J., Stevenson, David S., Gauss, M., Rodriguez, J.M., Richter, A., ISAKSEN I.S.A., RODRIGUEZ J. M.   +85 more
core   +1 more source

Environmental Insights and Sustainability Opportunities for Scaled‐Up MXene Production Without Etching

Advanced Science, EarlyView.
Through a systematic and comprehensive analysis of the environmental impacts for the emerging MXene synthesis pathways, this study presents process transformation and optimization opportunities for low‐carbon MXene production from laboratory to industrial scales.
Yushuai Huang, Peng Peng, Maoqiao Xiang, Fen Yue, Jiangyan Wang, Wenwei Liu, Qingshan Zhu   +6 more
wiley   +1 more source

Principle of NOx Formation and Reduction Technology and Stabilization of NOx Emission

JAPAN TAPPI JOURNAL, 2008
2007年は電力及び動力用にボイラ設備を設置している一部事業者において，大気汚染防止法や水質汚濁防止法等の公害防止法令の不適切な設備管理の事例が発生し，社会的にも大きな関心事となった。その後，法令順守徹底の観点から，環境省検討委員会や事業者毎の調査検討が行なわれ，不適正事案の分析及び今後の取り組み指針が整理されている。窒素酸化物（以下NOxと称す）は，大気汚染防止法のばい煙の一つとして，規制されている物質であるが，環境省検討委員会や各社公表資料においても最も多くの不適正事案が紹介されている。NOxの発生原理やその低減技術はボイラメーカ各社や各種公知文献等でも過去に数多くの発表が行なわれているが，ここでは今後の法令順守や環境対策への取り組みの一助とするために改めて整理してみたので紹介する。
Yokoshiki, Tatuo, Taguchi, Yuzo
openaire   +1 more source

The impact of air pollutant and methane emission controls on tropospheric ozone and radiative forcing: CTM calculations for the period 1990-2030 [PDF]

, 2004
To explore the relationship between tropospheric ozone and radiative forcing with changing emissions, we compiled two sets of global scenarios for the emissions of the ozone precursors methane (CH4), carbon monoxide (CO), non-methane volatile organic ...
F. Dentener, D. Stevenson, Bergamaschi, P., Mechler, R., Stevenson, D.; id_orcid, Raes, F., F. Raes, Dentener, F., R. Mechler, M. Amann, Derwent, R., Stevenson, D.S., P. Bergamaschi, R. Derwent, Cofala, J., Stevenson, D., J. Cofala, Amann, M.   +17 more
core   +1 more source

Interpretable Machine Learning Framework for Nb─Si Based Alloy Design with Enhanced Fracture Toughness

Advanced Science, EarlyView.
An interpretable machine learning framework integrating SHAP and PDP analysis identifies critical design descriptors from 139 physicochemical features for Nb─Si alloys. The framework achieves <7% prediction error and guides the discovery of Nb38.5Ti38.5Si3Zr18V2 alloy with 22.791 MPa·m1/2 fracture toughness, breaking the 20 MPa·m1/2 barrier.
Dezhi Chen, Chao Xu, Jingyue Yu, Qi Wang, Hongze Fang, Shuo Yin, Turab Lookman, Ruirun Chen   +7 more
wiley   +1 more source