INFLUENCE OF THE DURATION OF PRELIMINARY IRRADIATION WITH MICROWAVE WAVES OF CULTURE OF CHEMOLITHOTROPHIC MICROORGANISMS ON THE EFFICIENCY OF BIOLEACHING PROCESSES

2017 ◽  
Vol 12 (32) ◽  
pp. 237-247
Author(s):  
A.V. Kioresku ◽  
Keyword(s):  
Preliminary Irradiation

scholarly journals Influence of the Generator in-Growth Time on the Final Radiochemical Purity and Stability of Radiopharmaceuticals

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
L. Uccelli ◽  
A. Boschi ◽  
M. Pasquali ◽  
A. Duatti ◽  
G. Di Domenico ◽  
...  
Keyword(s):  
Nuclear Physics ◽  
Radiochemical Purity ◽  
Specific Activity ◽  
Growth Time ◽  
Direct Production ◽  
Theoretical Investigations ◽  
Standard Quality ◽  
Control Procedures ◽  
Italian National Institute ◽  
Preliminary Irradiation

At Legnaro laboratories of the Italian National Institute for Nuclear Physics (INFN), a feasibility study has started since 2011 related to accelerated-based direct production of by the100Mo(p,2n) reaction. Both theoretical investigations and some recent preliminary irradiation tests on100Mo-enriched samples have pointed out that both the / ratio and the specific activity will be basically different in the final accelerator-produced Tc with respect to generator-produced one, which might affect the radiopharmaceutical procedures. The aim of this work was to evaluate the possible impact of different / isomeric ratios on the preparation of different Tc-labeled pharmaceutical kits. A set of measurements with , eluted from a standard99Mo/ generator, was performed, and results on both radiochemical purity and stability studies (following the standard quality control procedures) are reported for a set of widely used pharmaceuticals (i.e., -Sestamibi, -ECD, -MAG3, -DTPA, -MDP, -HMDP, -nanocolloids, and -DMSA). These pharmaceuticals have been all reconstituted with either the first [O4]−eluate obtained from a99Mo/ generator (coming from two different companies) or eluates after 24, 36, 48, and 72 hours from last elution. Results show that the radiochemical purity and stability of these radiopharmaceuticals were not affected up to the value of 11.84 for the / ratio.

scholarly journals Effect of preliminary irradiation on depth of cure and hardness of a veneering composite

2010 ◽  
Vol 52 (1) ◽  
pp. 71-75 ◽  
Author(s):  
Yoshifumi Matsumoto ◽  
Mika Furuchi ◽  
Hiroyas Koizumi ◽  
Hideo Matsumura
Keyword(s):  
Depth Of Cure ◽  
Preliminary Irradiation

Enhancement of thermal donor formation in germanium by preliminary irradiation: infrared absorption measurements

2001 ◽  
Vol 302-303 ◽  
pp. 201-205 ◽  
Author(s):  
V.V. Litvinov ◽  
L.I. Murin ◽  
V.P. Markevich ◽  
J.L. Lindström ◽  
A.A Klechko
Keyword(s):  
Infrared Absorption ◽  
Thermal Donor ◽  
Donor Formation ◽  
Preliminary Irradiation ◽  
Absorption Measurements

Effect of irradiation and of replacement of hydrogen by deuterium on the kinetics of hydrogenation of maleic acid on a nickel catalyst

1980 ◽  
Vol 45 (6) ◽  
pp. 1632-1638 ◽  
Author(s):  
Rostislav Kudláček ◽  
Růžena Jelínková
Keyword(s):  
Reaction Rate ◽  
Catalyst Surface ◽  
Catalyst Activity ◽  
Hydrogenation Reaction ◽  
Gamma Dose ◽  
Model Reaction ◽  
Solid Catalyst ◽  
Liquid Phase Hydrogenation ◽  
Kinetics Of ◽  
Preliminary Irradiation

Liquid phase hydrogenation reaction was studied on modifying the solid catalyst by preliminary irradiation and replacing the reacting hydrogen by deuterium; the changes in the reaction rate were measured and the phenomena on the catalyst surface, particularly the change in the catalyst activity, were investigated. For the model reaction, the dependences of the reaction rate on the temperature of reduction and of the successive activation of the catalyst on the absorbed gamma dose were followed, and the dependences of the reaction rate on the reaction temperature were compared for the hydrogenation and deuteration. Isotope effect was found in the influence of the reacting medium on the catalyst property. The activity of the nickel carrier catalyst is governed by its interaction with hydrogen after the reduction, particularly by the temperature of this process.

Effect of Preliminary Irradiation of Mice on Radioresistance of Immunologically Competent Spleen Cells

Nature ◽  
1968 ◽  
Vol 220 (5174) ◽  
pp. 1349-1350 ◽  
Author(s):  
R. V. PETROV ◽  
A. N. CHEREDEEV
Keyword(s):  
Spleen Cells ◽  
Preliminary Irradiation

scholarly journals Functional activity of NADH-dependent reductase system in liver and guerin’s carcinoma microsomal fraction in rats exposed to preliminary irradiation

2013 ◽  
Vol 59 (6) ◽  
pp. 662-672
Author(s):  
M.M. Marchenko ◽  
O.V. Ketsa
Keyword(s):  
Tumor Growth ◽  
Cytochrome B ◽  
Functional Activity ◽  
Microsomal Fraction ◽  
Reductase Activity ◽  
Enzymatic Activities ◽  
Tumor Bearing ◽  
Guerin’S Carcinoma ◽  
Nadh Cytochrome ◽  
Preliminary Irradiation

The activity of liver and Guerin’s carcinoma microsomal NADH-dependent reductase system has been investigated in tumor-bearing rats exposed to preliminary irradiation. Preliminary irradiation of rats (before transplantation of Guerin’s carcinoma) resulted in the decrease of NADH-cytochrome b reductase activity and contents of cytochrome b in the Guerin’s carcinoma microsomal fraction in the logarithmic phases of oncogenesis compared with the non-irradiated tumor-bearing rats. The effect of irradiation preceding transplantation of the tumor to rats results in the increase of enzymatic activities of liver microsomal NADH-cytochrome b reductase in the latent and logarithmic phases of tumor growth as compared with non-irradiated tumor-bearing rats. At the same time the contents of cytochrome b decreases. During longer periods after irradiation the investigated parameters approached to those in the group of non-irradiated tumor-bearing animals.

scholarly journals Радиационная обработка краев трещины сверхпроводящего слоя при реставрации ВТСП-ленты

2022 ◽  
Vol 64 (3) ◽  
pp. 319
Author(s):  
А.И. Подливаев ◽  
И.А. Руднев
Keyword(s):  
Critical Current ◽  
Critical State ◽  
Software Package ◽  
Transverse Crack ◽  
Initial Value ◽  
Superconducting Layer ◽  
Superconducting Tape ◽  
Htsc Tape ◽  
Helium Neon ◽  
Preliminary Irradiation

Numerically, within the framework of the critical state model, the density of superconducting currents in a second-generation HTSC tape based on GdBa2Cu3O7-x is determined. It is shown that during the restoration of the transverse crack of the superconducting layer by shunting the crack with a piece of defect-free tape, the critical current of the restored area decreases by ~ 8%. It is shown that preliminary irradiation of the crack edges with ions of hydrogen, helium, neon, and oxygen makes it possible to restore the initial value of the critical current. The calculation of the effect of radiation on a superconducting tape was carried out using the SRIM software package

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