Results 41 to 50 of about 20,876 (282)

Regional and local contributions to ambient non-methane volatile organic compounds at a polluted rural/coastal site in Pearl River Delta, China [PDF]

, 2006
Identification of major sources of airborne pollutants and their contribution to pollutant loadings are critical in developing effective pollution control and mitigation strategies.
Blake, DR, Guo, H, Kwok, YH, Li, YS, Simpson, IJ, Wang, T   +5 more
core   +1 more source

Studying Removal of PHCs from Deposits of Petroleum Storage Tanks by Ozonation Method: Determining Optimal Conditions by Central Composite Design Method

Journal of Environmental Health and Sustainable Development, 2022
Introduction: The increasing trend of petroleum production in Iran and lack of proper and systematic management of waste products in the deposition of petroleum storage tanks have made the existing hydrocarbons as a major hazards to the environment.
Mahdi Farzadkia, Majid Kermani, Ali Esarfili, Mahdi Ghorbanian, Niloufar Borhani Yazdi, Ehsan Abouee Mehrizi   +5 more
doaj  

Characterization of volatile organic compounds at a roadside environment in Hong Kong: An investigation of influences after air pollution control strategies [PDF]

, 2015
Vehicular emission is one of the important anthropogenic pollution sources for volatile organic compounds (VOCs). Four characterization campaigns were conducted at a representative urban roadside environment in Hong Kong between May 2011 and February ...
Blake, DR, Cao, JJ, Cheng, Y, Cui, L, Gao, Y, Ho, KF, Ho, SSH, Huang, Y, Lai, SC, Lee, SC, Ling, ZH, Louie, PKK   +11 more
core   +1 more source

Optimal Fractionation of Products of Refining Straight-run Gasoline on Zeolite Catalyst with Account of its Deactivation [PDF]

, 2002
Flowsheet of industrial refining straight-run gasoline on zeolite catalyst includes the necessary stage of fractionation of conversion products to produce commercial gasoline, gas and heavy residue. Changes in qualitative and quantitative compositions of
A.A. Syskina, A.V. Wolf, Agabalyan, E.A. Laktionova, Klimov, Li, M.A. Samborskaya, Moros, Pham, Stepanov, Terentiev, V.V. Mashina, Velichkina   +12 more
core   +2 more sources

Synthesis of α-Quaternary Bicyclo[1.1.1]pentanes through Synergistic Organophotoredox and Hydrogen Atom Transfer Catalysis.

Organic Letters, 2021
Bicyclo[1.1.1]pentanes (BCPs) are important in drug design as sp3-rich bioisosteres of arenes and tert-butyl groups; however, the preparation of BCPs with adjacent quaternary carbons is barely known.
Jeremy Nugent, A. Sterling, Nils Frank, J. Mousseau, E. Anderson   +4 more
semanticscholar   +1 more source

Receptor Model Source Apportionment of Nonmethane Hydrocarbons in Mexico City

The Scientific World Journal, 2002
With the purpose of estimating the source contributions of nonmethane hydrocarbons (NMHC) to the atmosphere at three different sites in the Mexico City Metropolitan Area, 92 ambient air samples were measured from February 23 to March 22 of 1997.
V. Mugica, J. Watson, E. Vega, E. Reyes, M.E. Ruiz, J. Chow   +5 more
doaj   +1 more source

Tin‐Oxo Nanocluster Extreme UV Photoresists Equipped with Chemical Features for Atmospheric Stability and High EUV Sensitivity

Advanced Functional Materials, EarlyView.
Fluoroalkyl‐functionalized tin–oxo nanoclusters (N‐TOC6) enable robust pattern formation through ligand crosslinking under EUV exposure without thermal processing. Sn–F coordination mitigates the Lewis acidity of Sn centers, suppressing reactions with airborne molecules and improving post‐exposure pattern stability.
Yejin Ku, Gayoung Kim, Minseung Kim, Hyungju Ahn, Jin‐Kyun Lee, Jiho Kim, Byeong‐Gyu Park, Dohyun Moon, Sangsul Lee, Seohyeon Lee, Yu Ha Jang, Byung Jun Jung, Hyunseok Kim, Changhyeon Lee, Su‐Mi Hur, Ji Young Park, Chawon Koh, Tsunehiro Nishi, Hyun‐Woo Kim   +18 more
wiley   +1 more source

One‐Dimensional Polycyclic Aromatic Hydrocarbons Incorporating Multiple Dithiafulvene Units—Novel Multi‐Redox and Electrochromic Systems

Angewandte Chemie, EarlyView.
Planar polycyclic aromatic hydrocarbons (PAHs) incorporating three or four dithiafulvene (DTF) units were synthesized via Horner–Wadsworth–Emmons reactions to create large π‐conjugated redox‐active frameworks. These molecules display strong intermolecular associations and distinct odd–even redox behavior, enabling formation of mixed‐valence and radical‐
Cecilie Rindom, Florim Seljmani, Lukas Bradley Woodcock, Mogens Brøndsted Nielsen   +3 more
wiley   +2 more sources

Design and fabrication of chemically robust three-dimensional microfluidic valves [PDF]

, 2007
A current problem in microfluidics is that poly(dimethylsiloxane) (PDMS), used to fabricate many microfluidic devices, is not compatible with most organic solvents. Fluorinated compounds are more chemically robust than PDMS but, historically, it has been
Chen, Yan, Garcia, Erika, Gomez, Frank A., Hanrahan, Grady, Maltezos, George, Scherer, Axel, van Dam, R. Michael, Vyawhare, Saurabh   +7 more
core   +2 more sources

Sustainable Catalyst‐Free PLG Networks: Recyclability, Biodegradability, and Functional Performance

Advanced Functional Materials, EarlyView.
A catalyst‐additive free covalent adaptable network is developed from star‐shaped poly(lactide‐co‐glycolide) cross‐linked with pyromellitic dianhydride, enabling internal carboxylic acid‐driven transesterification. The resulting biodegradable network exhibits mechanical robustness (Young's modulus ≈1.6 GPa), complete recyclability, rapid biodegradation
Lars Schwarzer, Emilia Fulajtar, Seema Agarwal   +2 more
wiley   +1 more source