Results 31 to 40 of about 402,207 (326)

Generation of nanoparticles in the concentrated energy (laser beam) and gas flow

open access: yesAviation, 2004
The method of generation and selection of small nanoparticles in the airflow is considered in this paper. To melt the material (stainless steel), a concentrated energy flow – a pulsed solid‐state laser beam – was used.
Arūnas Severas Amulevičius   +3 more
doaj   +1 more source

Assessment of the radiological impact of a decommissioning nuclear power plant in Italy

open access: yes, 2012
The assessment of the radiological impact of a decommissioning Nuclear Power Plant is presented here through the results of an environmental monitoring survey carried out in the area surrounding the Garigliano Power Plant.
D'Onofrio, A.   +9 more
core   +1 more source

Discovery of Radioactivity [PDF]

open access: yesNature, 1948
I AM surprised that Prof. Becquerel should have read into a passing reference to his distinguished father‘s work, in my review of Prof. Gamow‘s book, any suggestion that the discovery of radioactivity was in any way "fortuitous". No such suggestion was intended.
J, BECQUEREL, J A, CROWTHER
openaire   +3 more sources

Time changes of dose equivalent rate above the soil surface as indication of natural attenuation processes [PDF]

open access: yesProceedings of the International Association of Hydrological Sciences, 2019
Eight sites in the Fukushima contaminated area were surveyed for long-term changes in D-shuttle dose equivalent rate above the soil surface during 2015–2017. D-shuttle readings in most cases decreased faster than if due to radioactive decay only.
A. V. Konoplev   +2 more
doaj   +1 more source

Systematic study of proton radioactivity of spherical proton emitters within various versions of proximity potential formalisms

open access: yes, 2019
In this work we present a systematic study of the proton radioactivity half-lives of spherical proton emitters within the Coulomb and proximity potential model.
Chen, Jiu-Long   +4 more
core   +1 more source

Fukushima and Chernobyl: Similarities and Differences of Radiocesium Behavior in the Soil–Water Environment

open access: yesToxics, 2022
In the wake of Chernobyl and Fukushima accidents, radiocesium has become a radionuclide of most environmental concern. The ease with which this radionuclide moves through the environment and is taken up by plants and animals is governed by its chemical ...
Alexei Konoplev
doaj   +1 more source

The nicotinamide hypothesis revisited—plant defense signaling integrating PARP, nicotinamide, nicotinic acid, epigenetics, and glutathione

open access: yesFEBS Letters, EarlyView.
Nicotinamide (NIC) and nicotinic acid (NIA) are proposed as stress signaling compounds in plants. Oxidative stress may lead to single strand breaks (SSB) in DNA, which activate poly(ADP‐ribose) polymerase (PARP). NIC and NIA are then formed from NAD. NIC and NIA can promote epigenetic changes leading to the expression of defense genes specific for the ...
Torkel Berglund, Anna B. Ohlsson
wiley   +1 more source

The neglected activation of tantalum in reduced activation materials

open access: yesNuclear Materials and Energy, 2023
Due to the expression of “reduced activation”, the severe radioactivity of tantalum (Ta) after neutron irradiation in early decay years is easily neglected. In the presented study, after an irradiation of only 0.3 dpa by fission neutron and followed by a
Lei Zhang   +11 more
doaj   +1 more source

Brain delivery of vasoactive intestinal peptide (VIP) following nasal administration to rats [PDF]

open access: yes, 2003
The aim of this work was to study in rats the nasal route for the brain delivery of the vasoactive intestinal peptide (VIP) neuropeptide. After evaluating VIP stability in solutions obtained from nasal washes, the effect of formulation parameters (pH 4-9,
Couet, William   +5 more
core   +1 more source

4‐nitrobenzoate inhibits 4‐hydroxybenzoate polyprenyltransferase in malaria parasites and enhances atovaquone efficacy

open access: yesFEBS Letters, EarlyView.
Atovaquone is an antimalarial requiring potentiation for sufficient efficacy. We pursued strategies to enhance its activity, showing that 4‐nitrobenzoate inhibits 4‐hydroxybenzoate polyprenyltransferase, decreasing ubiquinone biosynthesis. Since atovaquone competes with ubiquinol in mitochondria, 4‐nitrobenzoate facilitates its action, potentiating ...
Ignasi Bofill Verdaguer   +7 more
wiley   +1 more source

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