Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z

   |<      <<      >>     > |    


Positronium formation in positron-sodium collisions. The experimental points are from Zhou et al.

Positronium in the ground state with the wave function enters a target and interacts at point 1 with an atom of the target. After the interaction, a non-stationary -system moves to the vacuum and transforms into a set of stationary states

Positronium in the ground state with the wave function W enters a target and interacts at point 1 with an atom of the target. After the interaction, a non-stationary -system moves to the vacuum and transforms into a set of stationary states

Positronium lifetime dependence on the spherical free volume radius given by the Tao-Eldnq model.

Positronium lifetime distribution of the two porous samples of PPO

Positronium total scattering cross sections for helium and argon gases. Experiment

Positronium-beam production efficiencies versus gas pressure at positronium kinetic energies of 30 eV, 60 eV, 90 eV and 120 eV for .

Positrons travel a distance before annihilation in the absorber and the distance increases with positron energy. Since positrons with different energies travel in zigzag directions, the effective range is the shortest distance between the nucleus and the direction of 511 keV photons. This effective range degrades the spatial resolution of the PET scanner.

Poslidaled slnictncs eX In stdulion the Cp rings appear lo rock as the bcryOhim atom osdBalcs. From Praiicn. S. J.

POSS core with 72 PMe2 groups

POSS core with chromophores in the periphery

POSS dissolves molecularly and spontaneously each black dot is a 1.5 nm POSS molecule .

POSS end-capped conjugated polymers

POSS molecule showing the central rigid cage and surrounding methyl groups.

Posshible p-peroxo-iron species for extradiol oxygenation.

Possibie mechanism for Mn catalase peroxide disproportionation

Possibie models for charge ordering near x 2 3 in Lni jAjMnOs, the Wigner crystal versus the bistripe model.

Possibie pathway for titanium-catalyzed pinacol couplings under protic conditions.

Possibie products of the reaction of five-membered cyciic carbonates with oxiranes in the presence of cationic initiator.

Possibie reactions network taking place into the cars exhaust catalysts.

Possibilities for catalyst investigations, each inward arrow stands for an excitation, each outward arrow indicates how the information is to be detected.

Possibilities for connecting fluidics to microreactors.

Possibilities for direct contact heat transfer can be added to the superstructure.

Possibilities for engineering enzymatic peptide synthesis at different levels.

Possibilities for geometrical isomerism



   |<      <<      >>     > |    

SEARCH



© 2024 chempedia.info