Results 1 to 10 of about 170,369 (295)

Impediance spectroscopy of modified potassium titanates. II [PDF]

open access: yesЭлектрохимическая энергетика, 2023
The electrochemical and electrophysical properties of basic and protonated potassium titanates in contact with the graphite electrodes were studied using the method of impedance spectroscopy. The characteristics of potassium titanates are given depending
Makarova, Anna Dmitrievna   +8 more
doaj   +1 more source

A spectrophotometric study of the protonation processes of some N-[1-(benzimidazol)-1-yl]methylbenzamide derivatives [PDF]

open access: yesJournal of the Serbian Chemical Society, 2000
The protonation of N-[1-(benzimidazol)-1-yl]methylbenzamide derivatives in aqueous acids (H2SO4) media was investigated, using a spectrophotometric method. The investigated compounds have two protonation processes. The first protonation process occurs in
NADA U. PERISIC-JANJIC   +2 more
doaj   +2 more sources

Protonated Forms of Layered Perovskite-Like Titanate NaNdTiO4: Neutron and X-ray Diffraction Structural Analysis

open access: yesSolids, 2021
Structures of partially and completely protonated Ruddlesden–Popper phases, H0.7Na0.3NdTiO4·0.3H2O and HNdTiO4, have been established by means of neutron and X-ray diffraction analysis and compared among themselves as well as with that of the initial ...
Oleg I. Silyukov   +4 more
doaj   +1 more source

Polarized Proton-Proton Bremsstrahlung [PDF]

open access: yesPhysical Review Letters, 1986
Abstract A proton-proton bremsstrahlung experiment recently carried out at TRIUMF with polarized protons gives results which disagree with the Soft Photon Approximation and agree with potential model calculations.
P. Kitching   +18 more
openaire   +2 more sources

Protonation State of an Important Histidine from High Resolution Structures of Lytic Polysaccharide Monooxygenases

open access: yesBiomolecules, 2022
Lytic Polysaccharide Monooxygenases (LPMOs) oxidatively cleave recalcitrant polysaccharides. The mechanism involves (i) reduction of the Cu, (ii) polysaccharide binding, (iii) binding of different oxygen species, and (iv) glycosidic bond cleavage ...
Sanchari Banerjee   +10 more
doaj   +1 more source

Proton Radiobiology [PDF]

open access: yesCancers, 2015
In addition to the physical advantages (Bragg peak), the use of charged particles in cancer therapy can be associated with distinct biological effects compared to X-rays. While heavy ions (densely ionizing radiation) are known to have an energy- and charge-dependent increased Relative Biological Effectiveness (RBE), protons should not be very ...
Tommasino F., Durante M.
openaire   +4 more sources

Ion mobility spectrometry of N-methylimidazole and possibilities of its determination

open access: yesТонкие химические технологии, 2022
Objectives. To determine the ion mobility of N-methylimidazole, establish the structure of ions corresponding to characteristic signals, and determine the detection limit of N-methylimidazole on the ion-drift detector Kerber.Methods.
D. A. Aleksandrova   +9 more
doaj   +1 more source

The Proton-Proton Interaction [PDF]

open access: yesPhysical Review, 1950
This paper presents a phenomenological analysis of the proton-proton scattering observed at 32 and 340 Mev in terms of static nuclear potentials. Comparison of these results with the neutron-proton scattering at 40, 90, and 280 Mev analyzed previously indicates that nuclear forces are not charge independent. In particular, there is definite evidence in
Christian, R.S., Noyes, H.P.
openaire   +3 more sources

Superelectrophiles: Recent Advances

open access: yesMolecules, 2020
Superelectrophiles are reactive species that often carry multiple positive charges. They have been useful in numerous synthetic methods and they often exhibit highly unusual reactivities.
Douglas A. Klumpp, Maksim V. Anokhin
doaj   +1 more source

Determination and structural correlation of pK BH + for meta- and para- substituted benzamides in sulfuric acid solutions [PDF]

open access: yesJournal of the Serbian Chemical Society, 2006
The protonation of some meta and para substituted benzamides in sulfuric acid solutions was studied by UV spectroscopy in the 190-350 nm region. Principal component analysis was applied to separate the effect of protonation from the medium effect.
Stojković Goran, Popovski Emil
doaj   +3 more sources

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