Time-Resolved Study on Nonhomogeneous Chemistry Induced by Ionizing Radiation with Low Linear Energy Transfer in Water and Polar Solvents at Room Temperature

2010 ◽  
pp. 289-324 ◽  
Author(s):  
Vincent De Waele ◽  
Isabelle Lampre ◽  
Mehran Mostafavi
Keyword(s):  
Energy Transfer ◽  
Ionizing Radiation ◽  
Linear Energy Transfer ◽  
Room Temperature ◽  
Polar Solvents ◽  
Time Resolved

scholarly journals The effect of low LET (Linear Energy Transfer) ionizing radiation to catalase activity of wistar’s submandibular gland

2016 ◽  
Vol 1 (3) ◽  
pp. 145
Author(s):  
Nevy T. Putri ◽  
Sarianoferni Sarianoferni ◽  
Endah Wahjuningsih
Keyword(s):  
Energy Transfer ◽  
Ionizing Radiation ◽  
Submandibular Gland ◽  
Rattus Norvegicus ◽  
Catalase Activity ◽  
Linear Energy Transfer ◽  
Submandibular Salivary Gland ◽  
X Rays ◽  
X Ray ◽  
Bonferroni Test

Intraoral periapical radiograph examination is the additional examination which is the most widely used in Dentistry. This radiograph examination using an x-ray ionizing radiation with low LET (Linear Energy Transfer), and may affect submandibular salivary gland. Ionizing radiation exposure can cause damage by inducing a series of changes at the molecular and cellular level. This study aimed to prove the effects of x-ray ionizing radiation with low LET towards the catalase activity of Rattus norvegicus strain Wistar’s submandibular gland. The subjects were 28 male Wistar rats and divided into 4 groups (n=7). Three groups were exposed 4, 8 and 14 times to radiation with 0.002 µSv for each exposure. The catalase activity of each rat was examined by a spectrophotometer. Data were analyzed using one-way ANOVA followed by Bonferroni test. The results showed the average of catalase activity on Wistar rat’s submandibular gland, respectively for: 0.150±0.0895 (KK), 0.1405±0.0607 (K1), 0.1228±0.0290 (K2), 0.1227±0.0556 (K3). Data showed significant differences of catalase activity between test groups, but showed not significant differences of catalase activity between each groups of Rattus norvegicus strain Wistar’s submandibular gland. In this study concluded decreased catalase activity of Rattus norvegicus strain Wistar’s submandibular gland resulting from x-rays ionizing radiation by 4 times, 8 times and 14 times exposures.

A Diamond Detector for Registration of Ionizing Radiation with Low Linear Energy Transfer

2017 ◽  
Vol 60 (1) ◽  
pp. 75-81
Author(s):  
E. V. Gladchenkov ◽  
K. V. Zakharchenko ◽  
A. F. Kaperko ◽  
V. A. Kolyubin ◽  
V. P. Kulagin ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Ionizing Radiation ◽  
Linear Energy Transfer ◽  
Diamond Detector

Low-level Effects of Low Linear-energy-transfer Ionizing Radiation on Leukocarcinogenesis in Mice

1989 ◽  
Vol 57 ◽  
pp. 327
Author(s):  
E. P. Cronkite ◽  
T. Inoue ◽  
V. P. Bond ◽  
J. Bullis ◽  
N. Pappas
Keyword(s):  
Energy Transfer ◽  
Ionizing Radiation ◽  
Linear Energy Transfer ◽  
Low Level

Steady-state and Time-resolved Spectroscopic Studies of Benzanilides

1999 ◽  
Vol 54 (8-9) ◽  
pp. 495-502 ◽  
Author(s):  
Józef Heldt ◽  
Janina R. Heldt ◽  
Jerzy Kamiński
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Steady State ◽  
Proton Transfer ◽  
Room Temperature ◽  
Spectroscopic Studies ◽  
Fluorescence Band ◽  
Polar Solvents ◽  
Time Resolved ◽  
Decay Times

Steady-state and time-resolved spectroscopic studies of benzanilide (I) and jV-methylbenzanilide (II)were performed at 298 and 77 K in various solvents. The results indicate that benzanilide fluorescencein non-polar solvents at room temperature involves three independent modes of emission: F1 (LE) normalfluorescence from the initially excited state S1 (LE) with λmax = 320 nm, F2´(PT) fluorescence from the proton transfer tautomer with λmax = 468 nm, F2″CT) fluorescence from the species where intramolecular charge transfer appears, with λmax = 510 nm. At 77 K in MCH a new fluorescence band, Fag, appears at λmax=415 nm instead of the F2(PT) and F2″CT) fluorescence. This new emission originates from benzanilide dipolar aggregates or cis-imidol dimers. The decay times of these emission modes aredifferent.N-methylbenzanilide, dissolved in nonpopular and weakly polar solvents at room temperature and at77 K, shows only two fluorescence modes, i.e., the normal and the charge-transfer emissions at 320 nmand 520 nm, respectively. The fluorescence is deactivated with two decay times, 30 ps and 2.05 ns, inMCH solution.

scholarly journals Withdrawal: Distinct roles of Ape1 protein, an enzyme involved in DNA repair, in high or low linear energy transfer ionizing radiation-induced cell killing.

2020 ◽  
Vol 295 (18) ◽  
pp. 6249-6249
Author(s):  
Hongyan Wang ◽  
Xiang Wang ◽  
Guangnan Chen ◽  
Xiangming Zhang ◽  
Xiaobing Tang ◽  
...  
Keyword(s):  
Dna Repair ◽  
Energy Transfer ◽  
Ionizing Radiation ◽  
Linear Energy Transfer ◽  
Cell Killing ◽  
Radiation Induced
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