Results 41 to 50 of about 71,492 (345)

Transferring Axial Molecular Chirality Through a Sequence of On-Surface Reactions

open access: yes, 2020
Fine management of chiral processes on solid surfaces has progressed over the years, yet still faces the need for the controlled and selective production of advanced chiral materials.
Berdonces-Layunta, Alejandro   +8 more
core   +1 more source

Rapid prediction of NMR spectral properties with quantified uncertainty [PDF]

open access: yes, 2018
open access articleAccurate calculation of specific spectral properties for NMR is an important step for molecular structure elucidation. Here we report the development of a novel machine learning technique for accurately predicting chemical shifts of ...
Jonas, Eric, Kuhn, Stefan
core   +1 more source

Halogen chemistry reduces tropospheric O3 radiative forcing [PDF]

open access: yesAtmospheric Chemistry and Physics, 2017
Tropospheric ozone (O3) is a global warming gas, but the lack of a firm observational record since the preindustrial period means that estimates of its radiative forcing (RFTO3) rely on model calculations.
T. Sherwen   +4 more
doaj   +1 more source

Multiphoton detachment from negative ions: new theory vs experiment [PDF]

open access: yes, 1997
In this paper we compare the results of our adiabatic theory (Gribakin and Kuchiev, Phys. Rev. A, accepted for publication) with other theoretical and experimental results, mostly for halogen negative ions. The theory is based on the Keldysh approach. It
Gribakin, G. F., Kuchiev, M. Yu.
core   +2 more sources

Application of Molecular Emissions in Laser-Induced Breakdown Spectroscopy: A Review

open access: yesFrontiers in Physics, 2022
Laser-induced breakdown spectroscopy (LIBS) with advantages of rapid, in situ, and little sample pretreatment has been used in various fields. However, LIBS technology remains challenging in the detection of halogens, isotopes, and samples with similar ...
Fanghao Xu   +4 more
doaj   +1 more source

Halogen Bonding in Nucleic Acid Complexes

open access: yes, 2017
Halogen bonding (X-bonding) has attracted notable attention among noncovalent interactions. This highly directional attraction between a halogen atom and an electron donor has been exploited in knowledge-based drug design. A great deal of information has
Kolář, Michal H., Tabarrini, Oriana
core   +1 more source

Bromine measurements in ozone depleted air over the Arctic Ocean [PDF]

open access: yes, 2010
In situ measurements of ozone, photochemically active bromine compounds, and other trace gases over the Arctic Ocean in April 2008 are used to examine the chemistry and geographical extent of ozone depletion in the arctic marine boundary layer (MBL ...
Burkholder, J B   +14 more
core   +2 more sources

Waste oil management: Analyses of waste oils from vehicle crankcases and gearboxes [PDF]

open access: yesGlobal Journal of Environmental Science and Management, 2017
In accordance with waste strategy for Turkey, the study was carried out to analyses waste engine crankcase oils and waste gearbox oils generated from vehicle maintenance services in order to determine their suitability for recycling, recovery or final ...
V. Pelitli, Ö. Doğan, H.J. Köroğlu
doaj   +1 more source

Composition, structure and fluid regime of differentiated porphyritic intrusion Magnitogorsk iron-ore deposit (Southern Urals)

open access: yesЛитосфера, 2016
Case study of the differentiated subvolcanic porphyritic intrusion underlying Magnitogorsk skarn-magnetite deposit revealed regular relations between petrochemistry features of the rocks and composition of halogens (Cl and F) in the accessory apatite ...
T. D. Bocharnikova   +3 more
doaj   +2 more sources

Halogen (F, Cl, Br, and I) Devolatilization During Prograde Subduction: Insights From Western Alps Ophiolites

open access: yesGeochemistry, Geophysics, Geosystems
In order to examine the progressive chemical evolution of halogens (F, Cl, Br, I) in altered ocean crust (AOC) during prograde subduction, this study compares bulk and in situ halogen concentrations in mafic samples from three petrogenetically related ...
G. M. Beaudoin   +5 more
doaj   +1 more source

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