Results 71 to 80 of about 57,845 (293)

NO2 photolysis frequencies in street canyons [PDF]

, 2010
Photolysis frequencies for NO2 are modeled for the conditions in urban streets, which are taken into account as canyons with variable height and width.
Koepke, P., Hess, M., E.-P. Roeth, M. Garhammer, Roeth, E.-P., P. Koepke, Garhammer, M., M. Hess   +7 more
core   +2 more sources

Xenon-lamp simulated sunlight-induced photolysis of pyriclobenzuron in water: Kinetics, degradation pathways, and identification of photolysis products

, 2023
Pyriclobenzuron 11 PBU – pyriclobenzuron.(PBU) is a novel molluscicide developed to control Pomacea canaliculate, and little information on its environmental fate has been published.
Xiangyun Wang, Xumi Wang, Changpeng Zhang, Nan Fang, Liping Duan, Lianliang Liu, Huanqi Wu, Kongtan Yang, Peifang Weng   +8 more
core   +1 more source

FEATURES OF DIAZO DYE PHOTODECOMPOSITION IN AQUEOUS SOLUTIONS CONTAINING ZINC, ALUMINUM AND ERBIUM SALTS [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2019
Subject of research.The features of diazo dye Chicago Sky Blue 6B photodecomposition in aqueous solutions containing the salts of zinc, aluminum and erbium were studied.
K. S. Evstropyev, S. K. Evstropiev, S. Y. Maslennikov, K. V. Dukelskiy, E. V. Kolobkova, N. V. Nikonorov, I. S. Boltenkov   +6 more
doaj   +1 more source

Mechanism of Ferric Oxalate Photolysis [PDF]

, 2017
Iron­(III) oxalate, Fe3+(C2O4)3 3–, is a photoactive metal organic complex found in natural systems and used to quantify photon flux as a result of its high absorbance and reaction quantum yield.
Zarzycki, Piotr, Richard D. Schaller, Benjamin Gilbert, Banfield, Jillian F, Jillian F. Banfield, Mangiante, David M, Piotr Zarzycki, David. M. Mangiante, Gilbert, Benjamin, Schaller, Richard D   +9 more
core   +1 more source

Ultraviolet B (UVB) Photosensitivities of Tea Catechins and the Relevant Chemical Conversions

Molecules, 2016
Ultraviolet B (UVB) photosensitivities of eight catechins were screened. In both water and ethanol, epicatechin (EC, 575 μM) and catechin (C, 575 μM) exhibited low photostabilities under 6 h UVB radiation with the generation of yellow photoproducts ...
Meng Shi, Ying Nie, Xin-Qiang Zheng, Jian-Liang Lu, Yue-Rong Liang, Jian-Hui Ye   +5 more
doaj   +1 more source

Is either direct photolysis or photocatalysed H-shift of peroxyl radicals a competitive pathway in the troposphere?

Royal Society Open Science, 2020
Peroxyl radicals (RO[Formula: see text]) are key intermediates in atmospheric chemistry, with relatively long lifetimes compared to most other radical species.
Rashid R. Valiev, Theo Kurten
doaj   +1 more source

Modeling the signature of sulfur mass-independent fractionation produced in the Archean atmosphere [PDF]

, 2014
Minor sulfur isotope anomalies indicate the absence of O2 from the Archean atmosphere. A rich dataset showing large variations in magnitude and sign of Δ33S and Δ36S, preserved in both sulfates and sulfides, suggests that further constraints on Archean ...
Claire, Mark, Meadows, Victoria, Domagal-Goldman, Shawn D., Stueken, Eva, Claire, Mark W., Domagal-Goldman, Shawn, Kasting, James F., Stüeken, Eva E., Meadows, Victoria S., Kasting, James, Buick, Roger   +10 more
core   +1 more source

Photochemical generation of the 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) radical from caged nitroxides by near-infrared two-photon irradiation and its cytocidal effect on lung cancer cells

Beilstein Journal of Organic Chemistry, 2019
Novel caged nitroxides (nitroxide donors) with near-infrared two-photon (TP) responsive character, 2,2,6,6-tetramethyl-1-(1-(2-(4-nitrophenyl)benzofuran-6-yl)ethoxy)piperidine (2a) and its regioisomer 2b, were designed and synthesized. The one-photon (OP)
Ayato Yamada, Manabu Abe, Yoshinobu Nishimura, Shoji Ishizaka, Masashi Namba, Taku Nakashima, Kiyofumi Shimoji, Noboru Hattori   +7 more
doaj   +1 more source

PHOTOCHEMICAL SELF-PURIFICATION OF AQUATIC SYSTEMS IN THE PRESENCE OF VITAMIN B₆

Studia Universitatis Babes-Bolyai Chemia
Vitamin B6 (pyridoxine, PN) released from anthropogenic and biogenic activities can influence the chemical self-purification of surface waters through its photochemical transformations.
Viorica GLADCHI, Vladislav BLONSCHI, Gheorghe DUCA, Angela LIS, Radu SILAGHI-DUMITRESCU   +4 more
doaj   +1 more source

High-spin intermediates of the photolysis of 2,4,6-triazido-3-chloro-5-fluoropyridine

Beilstein Journal of Organic Chemistry, 2013
In contrast to theoretical expectations, the photolysis of 2,4,6-triazido-3-chloro-5-fluoropyridine in argon at 5 K gives rise to EPR peaks of just two triplet mononitrenes, two quintet dinitrenes, and a septet trinitrene.
Sergei V. Chapyshev, Denis V. Korchagin, Patrik Neuhaus, Wolfram Sander   +3 more
doaj   +1 more source