Results 31 to 40 of about 171,006 (202)
13C n.m.r. investigation on the nitrogen methylation of some azabenzenes [PDF]
, 1977 The 1H and 13C n.m.r. spectra of N-methylated pyridine, pyridazine, pyrimidine and pyrazine and N,N-dimethylated pyrimidine and pyrazine have been recorded and analysed.
Mohan, Chandra, Weijer, Peter van de
core +2 more sources
Protonated and Cationic Helium Clusters
Molecules, 2020 Protonated rare gas clusters have previously been shown to display markably different structures compared to their pure, cationic counterparts. Here, we have performed high-resolution mass spectrometry measurements of protonated and pristine clusters of ...
Linnea Lundberg +4 more
doaj +1 more source
Proton–proton, anti-proton–anti-proton, proton–anti-proton correlations in Au + Au collisions measured by STAR at RHIC [PDF]
The European Physical Journal C, 2006 The analysis of two-particle correlations provides a powerful tool to study the properties of hot and dense matter created in heavy-ion collisions at ultra-relativistic energies. Applied to identical and non-identical hadron pairs, it makes the study of space-time evolution of the source in femtoscopic scale possible.
openaire +1 more source
Nuclear Physics B, 1967 Abstract We calculate proton-proton Bremsstrahlung cross sections using the Tabakin separable potentials to generate off-shell nucleon-nucleon t-matrix elements in low partial waves and off-shell one-pion-exchange amplitudes for the higher partial waves.
W.A. Pearce, W.A. Gale, I.M. Duck
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A gated strategy stabilizes room‐temperature phosphorescence
Aggregate, 2023 Room‐temperature phosphorescence (RTP) of purely organic materials is easily quenched with unexpected purposes because the excited triplet state is extremely susceptible to external stimuli.
Kaizhi Gu +7 more
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Ligand entry in human ileal bile acid-binding protein is mediated by histidine protonation [PDF]
, 2019 Human ileal bile acid-binding protein (hI-BABP) has a key role in the intracellular transport of bile salts. To explore the role of histidine protonation in the binding process, the pH-dependence of bile salt binding and internal dynamics in hI-BABP was ...
Egyed, Orsolya +6 more
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Synthesis, Characterization and Protonation Behavior of Quinoxaline-Fused Porphycenes
Molecules, 2017 9,10-Quinoxaline-fused porphycenes 1a-H2 and 1b-H2 were synthesized by intramolecular McMurry coupling. As a result of the annulation of the quinoxaline moiety on the porphycene skeleton, 1a-H2 and 1b-H2 display absorption and fluorescence in the near ...
Daiki Kuzuhara +5 more
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Role of Thr82 for the unique photochemistry of TAT rhodopsin
Biophysics and Physicobiology, 2021 Marine bacterial TAT rhodopsin possesses the pKa of the retinal Schiff base, the chromophore, at neutral pH, and photoexcitation of the visible protonated state forms the isomerized 13-cis state, but reverts to the original state within 10–5 sec.
Teppei Sugimoto +2 more
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pH-dependent mechanism of nitric oxide release in nitrophorins 2 and 4 [PDF]
, 2009 Nitrophorins are NO carrier proteins that transport and release NO through a pH-dependent conformational change. They bind NO tightly in a low pH environment and release it in a higher pH environment.
Estrin, Dario Ariel +5 more
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E-Journal of Chemistry, 2007 The protonation constants of diamines such as ethylenediamine, 1,2-diaminopropane, 1,3-diaminopropane, o-phenylenediamine, m-phenylene-diamine, p-phenylenediamine were determined on the basis of Bjerrum and Calvin method in methanol-water mixtures.
Sangita Sharma +4 more
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