Chemical Effects of Iodine-125 Decay in Aqueous Solution of 5-Iodouracil. Ring Fragmentation as a Consequence of the Auger Effect

1981 ◽  
Vol 87 (1) ◽  
pp. 24 ◽  
Author(s):  
R. Deutzmann ◽  
G. Stöcklin ◽  
G. Stocklin
Keyword(s):  
Aqueous Solution ◽  
Chemical Effects ◽  
Iodine 125 ◽  
Auger Effect

scholarly journals Chemical Effects of I. T. 95mTc-95gTc in some Pertechnetates in Aqueous Solution

1981 ◽  
Vol 29 (2-3) ◽  
Author(s):  
E. IANOVICI ◽  
P. LERCH ◽  
G. ZAHNER
Keyword(s):  
Aqueous Solution ◽  
Chemical Effects

A Review on Chemical Effects in Aqueous Solution induced by Plasma with Glow Discharge

2001 ◽  
Vol 3 (3) ◽  
pp. 765-774 ◽  
Author(s):  
Gao Jin-zhang ◽  
Wang Xiao-yan ◽  
Hu Zhong-ai ◽  
Hou Jing-guo ◽  
Lu Quan-fang
Keyword(s):  
Aqueous Solution ◽  
Glow Discharge ◽  
Chemical Effects

scholarly journals Hydration of Nucleobase as Probed by Electron Emission of Uridine-5′-Mono-Phosphate (UMP) in Aqueous Solution Induced by Nitrogen K-Shell Ionization

2020 ◽  
Vol 4 (1) ◽  
pp. 10
Author(s):  
Yasuaki Takeda ◽  
Hiroyuki Shimada ◽  
Ryosuke Miura ◽  
Masatoshi Ukai ◽  
Kentaro Fujii ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Dna Lesions ◽  
Photoelectron Spectra ◽  
Water Molecules ◽  
Orbital Electron ◽  
Radiation Processes ◽  
Early Radiation ◽  
Auger Effect ◽  
Shell Ionization ◽  
Auger Electron Spectra

To identify the precise early radiation processes of DNA lesions, we measure electron kinetic energy spectra emitted from uridine-5′ monophosphate (UMP) in aqueous solution for the photoionization of the N 1s orbital electron and for the following Auger effect using a monochromatic soft X-ray synchrotron radiation at energies above the nitrogen K-shell ionization threshold. The change of photoelectron spectra for UMP in aqueous solutions at different proton concentrations (pH = 7.5 and 11.3) is ascribed to the chemical shift of the N3 nitrogen atom in uracil moiety of canonical and deprotonated forms. The lowest double ionization potentials for aqueous UMP at different pH obtained from the Auger electron spectra following the N 1s photoionization values show the electrostatic aqueous interaction of uracil moiety of canonical (neutral) and deprotonated (negatively charged) forms with hydrated water molecules.

Chemical Effects of Tritium Decay in Aqueous Solution of Uracil

1983 ◽  
Vol 33 (2-3) ◽  
Author(s):  
T . ASANO ◽  
A . HALPERN ◽  
G. STÖCKLIN
Keyword(s):  
Aqueous Solution ◽  
Chemical Effects

Chemical effects in diffusion and structure of zinc chloride in aqueous solution

1983 ◽  
Vol 76 (1) ◽  
pp. 125-128 ◽  
Author(s):  
A.J. Easteal ◽  
P.V. Giaquinta ◽  
N.H. March ◽  
M.P. Tosi
Keyword(s):  
Aqueous Solution ◽  
Zinc Chloride ◽  
Chemical Effects

CHEMICAL EFFECTS OF THE Br81(γ,α) As77 REACTION IN BROMIDES

1958 ◽  
Vol 36 (6) ◽  
pp. 979-982
Author(s):  
D. H. Nelson ◽  
K. J. McCallum
Keyword(s):  
Aqueous Solution ◽  
Gamma Rays ◽  
Lithium Bromide ◽  
High Energy ◽  
Chemical Forms ◽  
High Energy Gamma ◽  
Chemical Effects ◽  
Energy Gamma

An investigation has been made of the chemical forms of the arsenic produced when solid bromides, following irradiation with high-energy gamma rays, are dissolved in aqueous solution. The As77 is found to appear in both the pentavalent and the trivalent forms, the ratio AsV/AsIII increasing with an increase in the number of moles of water present in the hydrated solid. For the monohydrate of lithium bromide, the ratio depends upon the pH of the solution in which the solid is dissolved.

Structures Formed by Cryoprotective Agents Used in Freezc-Etching

1971 ◽  
Vol 29 ◽  
pp. 448-449
Author(s):  
G. G. Cocks ◽  
C. E. Cluthe
Keyword(s):  
Aqueous Solution ◽  
Polyethylene Oxide ◽  
Liquid Nitrogen Temperature ◽  
Ice Crystals ◽  
Etching Technique ◽  
Structural Constituent ◽  
Cryoprotective Agents ◽  
Quick Freezing ◽  
Freeze Etching ◽  
Fractured Surface

The freeze etching technique is potentially useful for examining dilute solutions or suspensions of macromolecular materials. Quick freezing of aqueous solutions in Freon or propane at or near liquid nitrogen temperature produces relatively large ice crystals and these crystals may damage the structures to be examined. Cryoprotective agents may reduce damage to the specimem, hut their use often results in the formation of a different set of specimem artifacts.In a study of the structure of polyethylene oxide gels glycerol and sucrose were used as cryoprotective agents. The experiments reported here show some of the structures which can appear when these cryoprotective agents are used.Figure 1 shows a fractured surface of a frozen 25% aqueous solution of sucrose. The branches of dendritic ice crystals surrounded hy ice-sucrose eutectic can be seen. When this fractured surface is etched the ice in the dendrites sublimes giving the type of structure shown in Figure 2. The ice-sucrose eutectic etches much more slowly. It is the smooth continuous structural constituent surrounding the branches of the dendrites.

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