Results 51 to 60 of about 26,984 (232)

Power-dependent speciation of volatile organic compounds in aircraft exhaust [PDF]

, 2012
As part of the third NASA Aircraft Particle Emissions Experiment (APEX-3, November 2005), whole air samples were collected to determine the emission rates of volatile organic compounds (VOCs) from aircraft equipped with three different gas-turbine ...
Anderson, BE, Beyersdorf, AJ, Blake, DR, Thornhill, KL, Timko, MT, Winstead, EL, Ziemba, LD   +6 more
core   +1 more source

Characteristics, properties and limitations of per‐ or polyfluoroalkyl substances (PFASs) and fluoropolymers

Polymer International, EarlyView.
An overview and categorization of man‐made per‐ or polyfluoroalkyl substances (PFASs) including low‐molar‐mass and high‐molar‐mass fluorochemicals, and their international regulations is presented. Though certain PFASs are toxic, bioaccumulative and cross the human cellular membranes, others, such as fluoropolymers, are safe, reliable and involved in ...
Bruno Améduri
wiley   +1 more source

Efficient Trifluoromethylation of Halogenated Hydrocarbons Using Novel [(bpy)Cu(O₂CCF₂SO₂F)₂] Reagent

Molecules
This study introduces a novel trifluoromethylating reagent, [(bpy)Cu(O2CCF2SO2F)2], notable for not only its practical synthesis from cost-effective starting materials and scalability but also its nonhygroscopic nature.
Xiong Wu, Xin Qiu, Wenrun Lou, Shengxue Zhang, Chaoyi Zhang, Xiaoyu Ma, Chao Liu   +6 more
doaj   +1 more source

Correlations between experimental and theoretical adiabatic ionization energies for organic compounds and rate constants for atmospheric reactions with hydroxyl radicals [PDF]

, 2010
Adiabatic ionization energy (AIE) calculations were performed at the AM1, PM3, PM6, PDDG, HF/QZVP, and B3LYP/QZVP levels of theory on 722 atmospherically relevant organic compounds with available experimental rate constants for atmospheric reactions with
Kaya Forest, Sierra Rayne
core   +2 more sources

Metal‐Free Electrophilic Borylative Cyclizations of Alkynes

The Chemical Record, EarlyView.
Metal‐free borylative cyclizations based on electrophilic alkyne activation by boron Lewis acids provide efficient access to borylated hetero‐ and carbocycles. Early studies using B(C6F5)3 displayed limited scope and application, whereas recent ClBcat‐ and BCl3‐based methods enable mild CB and CC/CX bond formation for the synthesis of cycles ...
Jaime Mateos‐Gil, Marcos Humanes, Manuel A. Fernández‐Rodríguez, Patricia García‐García   +3 more
wiley   +1 more source

Vertical distributions of non-methane hydrocarbons and halocarbons in the lower troposphere over northeast China [PDF]

, 2011
Vertical distributions of air pollutants are crucial for understanding the key processes of atmospheric transport and for evaluating chemical transport models.
Blake, DR, Ding, A, Gao, J, Jin, D, Lei, H, Simpson, IJ, Wang, T, Wang, W, Wang, X, Xue, L   +9 more
core   +2 more sources

Polyaniline as a dual flame retardant and electrostatic dissipative additive in polyethylene nanocomposites

Journal of Vinyl and Additive Technology, Volume 31, Issue 2, Page 339-355, March 2025.
Effecft of co‐doping polyaniline with phosphoric acid and phytic acid on the heat release rate of polyethylene. Abstract Polyolefins, such as polyethylene (PE), are highly flammable and electrically insulative, limiting their applicability. The study explored the flame‐retardancy and electrical conductivity of PE/polyaniline (PE/PANI) nanocomposites ...
Akeem Adisa, Joseph K. O. Asante, Vincent O. Ojijo, António B. Mapossa, Washington Mhike   +4 more
wiley   +1 more source

Experimental study of chemiluminescence in UV and VIS range at hydrogen-oxygen mixtures ignition

MATEC Web of Conferences, 2018
The nonequilibrium radiation in the spectral range of 210-415 nm at ignition of a 10% stoichiometric hydrogen-oxygen mixture with additives of combustion inhibitors diluted with argon behind shock waves was registered.
Eremin Alexander, Korshunova Mayya, Mikheyeva Ekaterina   +2 more
doaj   +1 more source

Heterogeneous phototransformation of halogenated polycyclic aromatic hydrocarbons: influencing factors, mechanisms and products [PDF]

Atmospheric Chemistry and Physics
Chlorinated and brominated polycyclic aromatic hydrocarbons (XPAHs) are emerging pollutants widely found in atmospheric particulate matter (PM). However, their environmental transformation mechanisms remain poorly understood. In this study, we collected
Y. Yang, Y. Yang, Y. Yang, Y. Liu, Y. Liu, Y. Liu, G. Zhu, B. Lin, S. Zhang, S. Zhang, S. Zhang, X. Li, X. Li, X. Li, F. Xu, H. Niu, R. Jin, M. Zheng, M. Zheng, M. Zheng   +19 more
doaj   +1 more source

Haloalkane hydrolysis by Rhodococcus erythropolis cells: Comparison of conventional aqueous phase dehalogenation and nonconventional gas phase dehalogenation [PDF]

, 2004
Biofiltration of air polluted by volatile organic compounds is now recognized by the industrial and research communities as an effective and viable alternative to standard environmental technologies.
Armfield, Belkin, Cameron, Cox, Curragh, Dravis, Goubet, Graber, Halling, Jorio, Keith, Lamare, Lamare, Lamare, Maugard, Menig, Poelarends, Sorkhoh, Stafford, US EPA (United States Environmental Protection Agency), Yang, Zaks   +21 more
core   +4 more sources