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Chemical Compound Review:

HELIUM helium

Synonyms: helio, O-Helium, p-Helium, Helium-4, Helium-4;, ...

Welcome! If you are familiar with the subject of this article, you can contribute to this open access knowledge base by deleting incorrect information, restructuring or completely rewriting any text. Read more.

High impact information on helium

The study of the radiobiology of boron neutron capture therapy is based on the cellular level dosimetry of boron-10's thermal neutron capture reaction 10B(n,alpha)7Li, in which one 1.47 MeV helium-4 ion and one 0.84 MeV lithium-7 ion are spawned [1].
PURPOSE: To compare the results on DNA fragmentation induced in Chinese hamster V79 cells by various doses of gamma-rays and low-energy protons and helium-4 ions [2].

Analytical, diagnostic and therapeutic context of helium

Crystallization and melting of helium-4 was experimentally observed to be induced by acoustic radiation pressure where the liquid-solid interface is highly mobile at low temperatures [3].
We have investigated the DNA fragmentation patterns induced in Chinese hamster V79 cells by 31 keV/micrometer protons, 123 keV/micrometer helium-4 ions and gamma rays in the size range 0.023-5.7 Mbp, using calibrated Pulsed Field Gel Electrophoresis (PFGE) [4].

References

Dose point kernel for boron-11 decay and the cellular S values in boron neutron capture therapy. Ma, Y., Geng, J., Gao, S., Bao, S. Medical physics (2006) [Pubmed]
DNA fragmentation in V79 cells irradiated with light ions as measured by pulsed-field gel electrophoresis. I. Experimental results. Belli, M., Cherubini, R., Dalla Vecchia, M., Dini, V., Esposito, G., Moschini, G., Sapora, O., Simone, G., Tabocchini, M.A. Int. J. Radiat. Biol. (2002) [Pubmed]
Interface motion and nucleation of solid helium-4 induced by acoustic waves. Nomura, R., Suzuki, Y., Kimura, S., Okuda, Y. Phys. Rev. Lett. (2003) [Pubmed]
DNA fragmentation in mammalian cells exposed to various light ions. Belli, M., Cherubini, R., Dalla Vecchia, M., Dini, V., Esposito, G., Moschini, G., Sapora, O., Signoretti, C., Simone, G., Sorrentino, E., Tabocchini, M.A. Advances in space research : the official journal of the Committee on Space Research (COSPAR). (2001) [Pubmed]

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