Laboratory studies in search of the critical hydrogen concentration

Kanjana, Kotchaphan; Haygarth, Kyle; Wu, Weiqiang; Bartels, David M.

doi:10.1016/j.radphyschem.2012.09.011

Cited by 24 publications

(9 citation statements)

References 33 publications

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“…Solubility of kerosene in water is very limited. Thus, the value obtained corresponds quite well with the published results for a neat water 45-52 nmolJ -1 [7,[25][26][27][28]. The G(H 2 ) values increase to about 85 nmolJ -1 with increasing 1-octanol concentration in the organic phase.…”

Section: Aqueous Phasesupporting

confidence: 90%

“…It is worth to note that the values obtained can be much higher for -particles irradiation. The G(H 2 ) values recorded for a neat water exposed to an electron beam or -irradiation were in the range 45-52 nmolJ -1 [7,[25][26][27][28] whereas an -particle irradiation leads to values which are twice as high, and equal to 100-115 nmolJ -1 [30]. Moreover, our investigations do not concern transfer between phases, i.e.…”

Section: Discussionmentioning

confidence: 74%

“…Moreover, there are substantial differences in G(H 2 ) values of aqueous systems obtained by different type of radiation. For instance, G(H 2 ) in water exposed to an electron beam or -irradiation were in the range 45-52 nmolJ -1 [7,[25][26][27][28] whereas an -particle irradiation leads to higher than twice values 100-115 nmolJ -1 [30]. Thus, further investigations are necessary.…”

Section: Aqueous Phasementioning

confidence: 99%

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Electron beam irradiation of r-SANEX and i-SANEX solvent extraction systems: analysis of gaseous products

Szreder

Kocia

2015

Nukleonika

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1-Octanol/kerosene mixtures and water contacted with organic solvents were used as model solutions for r-SANEX and i-SANEX extractions systems. Investigations aimed on a quantitative evaluation of gaseous products generated in these systems under exposure to an electron beam irradiation. Influence of O2, HNO3 and the presence of model ligands and complexes on the radiation chemical yields was studied. Relatively high G(H2) values (up to 420 nmol·J-1) for the organic phase compromise the safety issues of the extraction process and should be considered on the stage of extraction apparatus design. Based on the obtained results gaseous hydrocarbons seem to have negligible impact on safety issue. The upper limit of G(H2) values in water contacted with organic phase was established to be 85 nmol·J-1. This value is relatively low, however, the literature data indicate that G(H2) values measured in aqueous solutions are over twice higher for α-particles irradiation than for electron beam or γ-irradiation. Thus, further investigations of these systems are necessary.

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Section: Aqueous Phasesupporting

confidence: 90%

Section: Discussionmentioning

confidence: 74%

Section: Aqueous Phasementioning

confidence: 99%

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Electron beam irradiation of r-SANEX and i-SANEX solvent extraction systems: analysis of gaseous products

Szreder

Kocia

2015

Nukleonika

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“…Twenty four hours after the end of experiment, animals were anesthetized using intraperitoneal injection of thiopental 50 mg/kg body weight [28] . Afterward, laporatomy was done and the vault of each animal cranium was rapidly removed and cerebral cortex with reminants of meninges were exposed.…”

Section: Fig 1: Different Virtual Quadrants In Morris Water Mazmentioning

confidence: 99%

Structural and Behavioural Changes in Rat Hippocampus Induced by Methotrexate and The potential ameliorative effect of Alpha lipoic acid.

Alsemeh

Ibrahim

Mohammed

et al. 2019

Egyptian Journal of Histology

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Background: Methotrexate (MTX) is a chemotherapy drug associated with cognitive insufficiency in cancer patients treated with chemotherapy.. Alpha lipoic acid (ALA) has been referred to as the "universal antioxidant" because of its unique antioxidant properties. Aim: To inspect the effect of MTX on the hippocampus and to correlate them with the cognition impairment and to assess the practical neuroprotective role of ALA on hippocampus. Material and Method: Thirty two male adult albino were classified into four groups: control group (Physiologic saline), ALA group: (200 mg/kg orally for three weeks), MTX group: (250 mg/ kg) as a single dose intraperitoneally injected and MTX +ALA group: rats were administrated a single dose of intraperitoneal injection of MTX (250 mg/ kg) in the fourth day and were given ALA in a dose of 200 mg/kg orally for three weeks starting from the first day. All animals were subjected to Morris Water Maze testing to assess the hippocampus functions. At the end of the experiment, all animals anesthetized, cerebrum removed and the specimen subjected to histological procedures and biochemical examination. Results: MTX caused impaired performance of Morris Water Maze of rats and biochemical changes significant decrease in oxidative enzymes and increase in malondialdehyde (MDA) tissue levels. Moreover, MTX caused histological changes in rat hippocampus in the form of degenerative and apoptotic neurons which confirmed by immnnohistochemical staining of caspase-3 and GFAP staining and morphometrical analysis of pyramidal cell layer thickness and pyramidal cell count. Co-administration of ALA with MTX significantly diminished the behavioral affection and biochemical changes in rat treated with MTX and ameliorated the histological changes of hippocampus tissue. Conclusion: Our experimental results proved the harmful effect of MTX on hippocampus tissue that explained the cognitive impairment that associated with MTX and confirm the antioxidant and the antiapoptotic properties of ALA on hippocampus tissue.

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“…These products can increase corrosion and degradation rates of reactor components as well as affect the transport and deposition of both corrosion products and radionuclides [4][5][6][7][8], thereby influencing the long-term integrity and performance of reactors. While the radiation-induced chemistry (radiolytic yields or G values and reaction rates) in water at elevated temperatures (say, up to 350°C) is relatively well documented [9][10][11], there are only very limited experimental data available on supercritical water radiolysis [12][13][14][15]. Direct measurements at elevated temperatures and pressures are difficult, especially beyond the thermodynamic critical point of water (t c = 373.95°C and P c = 22.06 MPa); thus, theoretical modeling and computer simulations are an important route of investigation [3,6,[16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Generation of Ultrafast Transient Acid Spikes in High-Temperature Water Irradiated With Low Linear Energy Transfer Radiation

Kanike¹,

Meesungnoen²,

Sanguanmith³

et al. 2016

CNL Nuclear Review

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Laboratory studies in search of the critical hydrogen concentration

Cited by 24 publications

References 33 publications

Electron beam irradiation of r-SANEX and i-SANEX solvent extraction systems: analysis of gaseous products

Electron beam irradiation of r-SANEX and i-SANEX solvent extraction systems: analysis of gaseous products

Structural and Behavioural Changes in Rat Hippocampus Induced by Methotrexate and The potential ameliorative effect of Alpha lipoic acid.

Generation of Ultrafast Transient Acid Spikes in High-Temperature Water Irradiated With Low Linear Energy Transfer Radiation

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