Results 101 to 110 of about 1,864,297 (295)

Nitrogen dioxide plumes reveal areas of industrialization: part 2

, 2016
Nitrogen dioxide is a toxic compound, often associated with an orange-brown color, and is a major air pollutant, especially in industrial areas. This image is a composite of one month of data during September 2010. It shows very large concentrations over
National Oceanic and Atmospheric Administration
core  

Machine Learning Accelerated Computational Design of Bio‐Inspired Catalysts in the Nitrogen Reduction Reaction

Advanced Materials, EarlyView.
We introduce a computational workflow that combines quantum chemical calculations and machine learning techniques to predict the catalytic performance of a wide range of catalysts in the nitrogen reduction reaction (NRR). The analysis of the trained models provides insights into the complex structure–activity relationship in experimental catalytic ...
Leonardo Di Ciano, Zihan You, Haoran Chen, Qifan Zhong, Rong‐Zhen Liao, Shaoqi Zhan   +5 more
wiley   +1 more source

Field calibration of a cluster of low-cost available sensors for air quality monitoring. Part A: Ozone and nitrogen dioxide

, 2015
The performances of several field calibration methods for low-cost sensors, including linear/multi linear regression and supervised learning techniques are compared.
L. Spinelle, M. Gerboles, Maria Gabriella Villani, Manuel Aleixandre, Fausto Bonavitacola   +4 more
semanticscholar   +1 more source

Nitrogen dioxide calibration standards for portable monitors [PDF]

"Mine operators and Mine Safety and Health Administration inspectors use portable gas monitors in underground mines to measure worker exposure to various gases such as methane, carbon monoxide, and nitrogen dioxide (NO2).

core  

Mass Spectrometric Investigation of the Influence of Water Vapour and Oxygen on Gas‐Phase Reactions of Aluminium Acetylacetonate

Advanced Materials Interfaces, EarlyView.
The gas‐phase decomposition of Al(acac)3 is investigated under inert, oxygen, and water‐containing conditions. Water is found to promote selective ligand removal and suppress hydrocarbon formation, while oxygen induces faster, less selective decomposition pathways.
Ilyas Adaköy, Sebastian Grimm, Patrick Hemberger, Nina Gaiser, Thomas Bierkandt, Charlotte Rudolph, Christoph Horn, Niklas Tomasik, Burak Atakan   +8 more
wiley   +1 more source

Modeling Dispersion of Pollutant Gases Emitted from the Chimney of Sahand Thermal Power Plant Using SCREEN View Software [PDF]

Muhandisī-i Bihdāsht-i Muḥīṭ
Background: This study aims to investigate the dispersion of pollutant gases emitted from the Sahand thermal power plant's chimney and determine the maximum concentration of these pollutants in the surrounding areas.
Mahdi Saghafi, Fatemeh Hosseinpour
doaj  

Preliminary Assessment of Air Pollution in the Archaeological Museum of Naples (Italy): Long Term Monitoring of Nitrogen Dioxide and Nitrous Acid

Air
A project to assess air pollution at the National Archeological Museum in Naples was carried out. The main goal of the project was to develop and test a reliable yet simple monitoring system to be adopted at the same time in several exposition rooms ...
Federica Valentini, Ivo Allegrini, Irene Colasanti, Camilla Zaratti, Andrea Macchia, Cristiana Barandoni, Anna Neri   +6 more
doaj   +1 more source

Atomic Layer Deposition of Metallic Molybdenum Dioxide Thin Films Enabling High‐k Rutile Capacitors

Advanced Materials Interfaces, EarlyView.
The first direct atomic layer deposition (ALD) process of molybdenum dioxide (MoO2) thin films is reported using molybdenum(II) acetate dimer (Mo2(OAc)4) and oxygen (O2) as precursors at 235°C–275°C. The films are crystalline, exceptionally pure, and conductive.
Alexey Ganzhinov, Miika Mattinen, Marko Vehkamäki, Kenichiro Mizohata, Mykhailo Chundak, Georgi Popov, Paavo Porri, Mikko Ritala, Matti Putkonen   +8 more
wiley   +1 more source

Abrupt recent trend changes in atmospheric nitrogen dioxide over the Middle East

Science Advances, 2015
Space observations of the Middle East show that geopolitics and armed conflict have drastically altered air pollution emissions. Nitrogen oxides, released from fossil fuel use and other combustion processes, affect air quality and climate.
J. Lelieveld, S. Beirle, C. Hörmann, G. Stenchikov, T. Wagner   +4 more
semanticscholar   +1 more source

Nitrogen and sulfur deposition on regional and global scales : a multimodel evaluation [PDF]

, 2006
[1] We use 23 atmospheric chemistry transport models to calculate current and future (2030) deposition of reactive nitrogen (NOy, NHx) and sulfate (SOx) to land and ocean surfaces.
Galloway, J., N. BELL, J. RODRIGUEZ, L. W. HOROWITZ, Horowitz, L., Pitari, G., M. SCHULTZ, Krol, M.C., Cofala, J., Hauglustaine, D., Collins, B., Lamarque, Jean-François, S. SZOPA, Lawrence, M., D. STEVENSON, Dentener, F., Muller, J. F., Fiore, A., Bergmann, D., Horowitz, L. W., Montanaro, V., Szopa, S., van Noije, T. P. C., Stevenson, D., Strahan, S., Lamarque, J. F., J. F. LAMARQUE, M. GAUSS, Rodriguez, J., Kulshrestha, U. C., Muller, J.F., T. BUTLER, Shindell, D., D. HAUGLUSTAINE, Van Noije, T., Galy-Lacaux, C., Galy-Lacaux, Corinne, C. ATHERTON, Mueller, J. F., M. KROL, M. LAWRENCE, Krol, M., D. BERGMAN, Bell, N., Stevenson, D. S.; id_orcid, J. COFALA, Eickhou, B., Rast, S., R. DOHERTY, K. ELLINGSEN, S. RAST, Fiore, Arlene M., J. DREVET, U. C. KULSHRESTHA, Kulshrestha, U.C., Bey, I., J. F. MÜLLER, S. STRAHAN, Horowitz, Larry W., Drevet, J., T. VAN NOIJE, B. COLLINS, Eickhout, B., Strahan, S. E., Solmon, F., V. MONTANARO, J. GALLOWAY, Kulshrestha, U., B. EICKHOUT, Noije, T., van, Atherton, C., Fiore, A.M., Wild, O., Sudo, K., D. SHINDELL, Bergman, D., Lamarque, J.F., Bey, Isabelle, PITARI, Giovanni, Lamarque, J., Laval-Szopa, Sophie, C. GALY LACAUX, Müller, J., Fiore, A. M., F. SOLMON, Sanderson, M., Schultz, M., Doherty, R., Horowitz, L.W., Ellingsen, K., A. M. FIORE, M. SANDERSON, I. BEY, DENTENER, F, Butler, T., K. SUDO, Gauss, M., O. WILD   +97 more
core   +1 more source