Results 41 to 50 of about 1,752,533 (355)

Characterization and engineering of a plastic-degrading aromatic polyesterase

Proceedings of the National Academy of Sciences of the United States of America, 2018
Significance Synthetic polymers are ubiquitous in the modern world but pose a global environmental problem. While plastics such as poly(ethylene terephthalate) (PET) are highly versatile, their resistance to natural degradation presents a serious ...
H. P. Austin, Mark D. Allen, B. Donohoe, Nicholas A. Rorrer, Fiona L. Kearns, Rodrigo L. Silveira, Rodrigo L. Silveira, B. C. Pollard, Graham Dominick, R. Duman, K. E. Omari, V. Mykhaylyk, A. Wagner, William E. Michener, A. Amore, M. Skaf, M. Crowley, A. Thorne, Christopher W. Johnson, H. Woodcock, J. McGeehan, G. Beckham   +21 more
semanticscholar   +1 more source

A green chemical approach for nitration of aromatic compounds

Macedonian Journal of Chemistry and Chemical Engineering, 2009
Photochemical aromatic nitration of phenol and salicylic acid has been carried out in the presence of UV radiations and formation of products has been observed spectrophotometrically.
Arpita Dugar, Anil Kumar, Rameshwar Ameta, Suresh C. Ameta   +3 more
doaj   +1 more source

Post Synthetic Modification of Planar Antiaromatic Hexaphyrin (1.0.1.0.1.0) by Regio-Selective, Sequential S_NAr

Molecules, 2021
In spite of unique structural, spectroscopic and redox properties, the synthetic variants of the planar, antiaromatic hexaphyrin (1.0.1.0.1.0) derivatives 2, has been limited due to the low yields and difficulty in access to the starting material.
Ranjan Dutta, Brijesh Chandra, Seong-Jin Hong, Yeonju Park, Young Mee Jung, Chang-Hee Lee   +5 more
doaj   +1 more source

Process for lowering the dielectric constant of polyimides using diamic acid additives [PDF]

, 1990
Linear aromatic polyimides with low dielectric constants are produced by adding a diamic acid additive to the polyamic acid resin formed by the condensation of an aromatic dianhydride with an aromatic diamine. The resulting modified polyimide is a better
St.clair, Anne K., Stoakley, Diane M.
core   +1 more source

Characterization of aromaticity in analogues of titan's atmospheric aerosols with two-step laser desorption ionization mass spectrometry

, 2016
The role of polycyclic aromatic hydrocarbons (PAH) and Nitrogen containing PAH (PANH) as intermediates of aerosol production in the atmosphere of Titan has been a subject of controversy for a long time.
Benilan, Yves, Carrasco, Nathalie, Cernogora, Guy, Gazeau, Marie-Claire, Mahjoub, Ahmed, Schwell, Martin, Szopa, Cyril   +6 more
core   +3 more sources

Aromatic Hydrocarbons, Diamonds, and Fullerenes in Interstellar Space: Puzzles to be Solved by Laboratory and Theoretical Astrochemistry [PDF]

, 2000
New research is presented, and previous research is reviewed, on the emission and absorption of interstellar aromatic hydrocarbons. Emission from aromatic hydrocarbons dominate the mid-infrared emission of many galaxies, including our own Milky Way ...
Allamandola, Allamandola, Allamandola, Allamandola, Anders, Andriesse, Bakes, Bakes, Becker, Beintema, Bettens, Blanco, Borghesi, Boulanger, Brooke, Brooke, Cesarsky, Cesarsky, Chiar, Chiar, Cohen, Cohen, Cohen, Cook, Dartois, de Frees, Draine, Duley, Duley, Foing, Foing, Fulara, Gillett, Goeres, Graham, Harvey, Herbig, Heymann, Hudgins, Hudgins, Joblin, K. Sellgren, Kroto, Kroto, Langhoff, Lewis, Léger, Mattila, Merrill, Moutou, Onaka, Oudmaijer, Papoular, Pauzat, Pauzat, Pendleton, Platt, Puget, Puget, Roche, Roche, Russell, Sakata, Sakata, Salama, Salama, Schutte, Schutte, Scott, Sellgren, Sellgren, Sellgren, Sellgren, Sellgren, Sellgren, Sellgren, Sellgren, Snow, Somerville, Szczepanski, Uchida, Uchida, Whitcomb   +82 more
core   +2 more sources

Current State of Knowledge in Microbial Degradation of Polycyclic Aromatic Hydrocarbons (PAHs): A Review

Frontiers in Microbiology, 2016
Polycyclic aromatic hydrocarbons (PAHs) include a group of organic priority pollutants of critical environmental and public health concern due to their toxic, genotoxic, mutagenic and/or carcinogenic properties and their ubiquitous occurrence as well as ...
D. Ghosal, Shreya Ghosh, T. Dutta, Y. Ahn   +3 more
semanticscholar   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Scientific Opinion on Flavouring Group Evaluation 78, Revision 2 (FGE.78Rev2): Consideration of aliphatic and alicyclic and aromatic hydrocarbons evaluated by JECFA (63rd meeting) structurally related to aliphatic hydrocarbons evaluated by EFSA in FGE.25Rev3

EFSA Journal, 2015
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to consider evaluations of flavouring substances assessed since 2000 by the Joint FAO/WHO Expert Committee on Food Additives
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj   +1 more source

Antibacterial activity of a malodor neutralizer containing silver nanoparticles [PDF]

Journal of Cell and Molecular Research, 2009
In this study bactericidal activity of a malodor neutralizer containing silver nanoparticles manufactured in Iran has been tested. For this purpose different concentrations of the product encounter with Staphylococcus aureus, Pseudomonas aeruginosa and ...
kiarash Ghazvini, Edriss MirzaHesabi, Mohammad Mehdi Akbarein   +2 more
doaj   +1 more source