Results 21 to 30 of about 148,467 (378)

Possible Effects of Greenhouse Gases to Ozone Profiles and DNA Active UV-B Irradiance at Ground Level

Atmosphere, 2020
In this paper, we compare model calculations of ozone profiles and their variability for the period 1998 to 2016 with satellite and lidar profiles at five ground-based stations.
Kostas Eleftheratos, John Kapsomenakis, Christos S. Zerefos, Alkiviadis F. Bais, Ilias Fountoulakis, Martin Dameris, Patrick Jöckel, Amund S. Haslerud, Sophie Godin-Beekmann, Wolfgang Steinbrecht, Irina Petropavlovskikh, Colette Brogniez, Thierry Leblanc, J. Ben Liley, Richard Querel, Daan P. J. Swart   +15 more
doaj   +1 more source

Probing halogen–halogen interactions in solution [PDF]

Physical Chemistry Chemical Physics, 2017
Weak but measurable: a supramolecular balance detects interactions between CBr3groups in solution and estimates the corresponding free energy (0.2 kJ mol−1).
Ayzac, V., Raynal, Matthieu, Isare, B., Idé, J., Brocorens, P., Lazzaroni, R., Etienne, T., Monari, A., Assfeld, Xavier, Bouteiller, Laurent   +9 more
openaire   +3 more sources

Halogen-Based 17β-HSD1 Inhibitors: Insights from DFT, Docking, and Molecular Dynamics Simulation Studies

Molecules, 2022
The high expression of 17β-hydroxysteroid dehydrogenase type 1 (17β-HSD1) mRNA has been found in breast cancer tissues and endometriosis. The current research focuses on preparing a range of organic molecules as 17β-HSD1 inhibitors.
Arulsamy Kulandaisamy, Murugesan Panneerselvam, Rajadurai Vijay Solomon, Madhavan Jaccob, Jaganathan Ramakrishnan, Kumaradhas Poomani, Muralikannan Maruthamuthu, Nagendran Tharmalingam   +7 more
doaj   +1 more source

Preparo de amostras de combustíveis fósseis por piroidrólise para a determinação de flúor e cloro Fluoride and chloride determination in fossil fuels after sample preparation by pyrohydrolysis

Química Nova, 2010
Pyrohydrolysis is proposed for fossil fuels sample preparation for further fluorine and chlorine determination. Samples were heated during 10 min at temperatures up to 1000 °C.
Fabiane G. Antes, Fábio A. Duarte, Éder L. M. Flores, José Neri G. Paniz, Érico M. M. Flores, Valderi L. Dressler   +5 more
doaj   +1 more source

High-spectral-resolution Fabry-Pérot interferometers overcome fundamental limitations of present volcanic gas remote sensing techniques

Frontiers in Earth Science, 2023
Remote sensing (RS) of volcanic gases has become a central tool for studying volcanic activity. For instance, ultraviolet (UV) skylight spectroscopy with grating spectrographs (GS) enables SO2 (and, under favourable conditions, BrO) quantification in ...
Jonas Kuhn, Jonas Kuhn, Nicole Bobrowski, Nicole Bobrowski, Guillaume Boudoire, Guillaume Boudoire, Sergio Calabrese, Sergio Calabrese, Giovanni Giuffrida, Marco Liuzzo, Katcho Karume, Dario Tedesco, Dario Tedesco, Thomas Wagner, Ulrich Platt, Ulrich Platt   +15 more
doaj   +1 more source

Analysis of products from the pyrolysis of plastics recovered from the commercial scale recycling of waste electrical and electronic equipment [PDF]

, 2007
Three plastic fractions from a commercial waste electrical and electronic equipment (WEEE) processing plant were collected and investigated for the possibility of recycling them by batch pyrolysis. The first plastic was from equipment containing cathode
Hall, W.J., Williams, P.T.
core   +1 more source

Intramolecular halogen–halogen bonds?

Physical Chemistry Chemical Physics, 2013
By analysing the properties of the electron density in the structurally simple perhalogenated ethanes, X3C-CY3 (X, Y = F, Cl), a previously overlooked non-covalent attraction between halogens attached to opposite carbon atoms is found. Quantum chemical calculations extrapolated towards the full solution of the Schrödinger equation reveal the complex ...
Johansson, Mikael P., Swart, Marcel
openaire   +5 more sources

Halogens in hydrothermal sphalerite record origin of ore-forming fluids

Geology, 2020
The halogens Cl and Br are sensitive indicators for the origin of ore-forming fluids. Here, we use a combination of microchemical and microscopic methods to show that measurable concentrations of these elements commonly occur as atomic-scale ...
M. Frenzel, E. al.
semanticscholar   +1 more source

Composition of minerals (apatite, magnenite, ilmenite and others) as an index of conditions of layered massive ore formation in the laminated gabbro of Kusa intrusion (the Southern Urals)

Литосфера, 2019
Research subject. In this research, we carried out a series of mineralogical, petrological and geochemical studies to investigate ore zones present in the Kusa ilmenite-magnetite deposit located within the boundaries of a similarly-named laminated gabbro
T. D. Bocharnikova, V. V. Kholodnov, Y. S. Shagalov   +2 more
doaj   +1 more source

New Halogen-Containing Drugs Approved by FDA in 2021: An Overview on Their Syntheses and Pharmaceutical Use

Molecules, 2022
This review describes the recent Food and Drug Administration (FDA)-approved drugs (in the year 2021) containing at least one halogen atom (covalently bound).
Davide Benedetto Tiz, Luana Bagnoli, Ornelio Rosati, Francesca Marini, Luca Sancineto, Claudio Santi   +5 more
doaj   +1 more source