Results 331 to 340 of about 1,136,279 (386)
Some of the next articles are maybe not open access.
Unraveling the Detailed Mechanism of Excited-State Proton Transfer.
Accounts of Chemical Research, 2018As one of the most fundamental processes, excited-state proton transfer (ESPT) plays a major role in both chemical and biological systems. In the past several decades, experimental and theoretical studies on ESPT systems have attracted considerable ...
P. Zhou, Keli Han
semanticscholar +1 more source
Alternative polymer systems for proton exchange membranes (PEMs).
Chemical Reviews, 2004Fuel cells have the potential to become an important energy conversion technology. Research efforts directed toward the widespread commercialization of fuel cells have accelerated in light of ongoing efforts to develop a hydrogen-based energy economy to ...
M. Hickner +4 more
semanticscholar +1 more source
, 2017
MR is a powerful modality. At its most advanced, it can be used not just to image anatomy and pathology, but to investigate organ function, to probe in vivo chemistry, and even to visualise the brain thinking.
D. McRobbie +3 more
semanticscholar +1 more source
MR is a powerful modality. At its most advanced, it can be used not just to image anatomy and pathology, but to investigate organ function, to probe in vivo chemistry, and even to visualise the brain thinking.
D. McRobbie +3 more
semanticscholar +1 more source
Proton–Proton and Proton–Antiproton Colliders
Reviews of Accelerator Science and Technology, 2014In the last five decades, proton–proton and proton–antiproton colliders have been the most powerful tools for high energy physics investigations. They have also deeply catalyzed innovation in accelerator physics and technology. Among the large number of proposed colliders, only four have really succeeded in becoming operational: the ISR, the SppbarS ...
openaire +2 more sources
The Scattering of Protons by Protons [PDF]
Physical Review, 1939 The cross section for scattering of protons by protons has been measured at angles from 15\ifmmode^\circ\else\textdegree\fi{} to 45\ifmmode^\circ\else\textdegree\fi{} for protons of energies 860, 1200, 1390, 2105 and 2392 kev. Observed scattering cross sections at 15\ifmmode^\circ\else\textdegree\fi{} are close to Mott values for all energies.
Donald W. Kerst +3 more
openaire +1 more source
When Is a Proton Not a Proton?
Chemistry - A European Journal, 1998In spite of the large number of protonated complexes, their use in catalytic cycles has been little explored. The existing examples suggest that catalytic processes initiated by the protonation of a low-valent metal hold promise for the development of selective, efficient, and atom-economical addition reactions under very mild conditions, if the ...
openaire +2 more sources
Scattering of Protons by Protons
Physical Review, 1953The data of Worthington, McGruer, and Findley (WMF) on scattering of protons by protons show an apparently real contribution to the cross section arising from scattering in the $p$ state. Results of phase shift analysis of these data are presented in Table I and in Fig. 1.
John L. Powell, H. H. Hall
openaire +2 more sources
Simple proton spectroscopic imaging.
Radiology, 1984Simple modification of a spin echo imaging pulse sequence generates useful spectroscopic information at 0.35 T. New images are produced that show water only, fat only, and the difference between water and fat intensity. Imaging speed, spatial resolution,
W. T. Dixon
semanticscholar +1 more source
Designing the next generation of proton-exchange membrane fuel cells
Nature, 2021K. Jiao +13 more
semanticscholar +1 more source
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update
, 1998The available data on gas-phase basicities and proton affinities of approximately 1700 molecular, radical and atomic neutral species are evaluated and compiled.
E. P. Hunter, S. Lias
semanticscholar +1 more source