Zobrazeno 1 - 10
of 189
pro vyhledávání: '"G. Randers"'
Autor:
Zengliang Yu, Lijun Wu, A Xu, Hongning Zhou, Tom K. Hei, M Hong, G Randers-Pehrson, Regina M. Santella
Publikováno v:
British Journal of Cancer
Background: Direct damage to DNA is generally accepted as the main initiator of mutation and cancer induced by environmental carcinogens or ionising radiation. However, there is accumulating evidence suggesting that extracellular/extranuclear targets
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 241:387-391
The microbeam facility at Columbia University is expanding current protocols for single-particle, single-cell irradiations, so experimenters can locate and irradiate nuclei and cytoplasm of unstained cells. The ion beamline is located directly under
Publikováno v:
Journal de Physique IV (Proceedings). 110:603-608
This paper describes experimental results and numerical simulations of jet penetration into granite from an aluminum lined shaped charge. Several penetration versus standoff experiments were conducted into an in-situ granite formation located in the
Autor:
A. W. Bigelow, G. Randers-Pehrson, G. Garty, C. R. Geard, Y. Xu, A. D. Harken, G. W. Johnson, D. J. Brenner, Floyd D. McDaniel, Barney L. Doyle
Publikováno v:
AIP Conference Proceedings.
The array of microbeam cell-irradiation systems, available to users at the Radiological Research Accelerator Facility (RARAF), Center for Radiological Research, Columbia University, is expanding. The HVE 5MV Singletron particle accelerator at the fac
Publikováno v:
Radiation Protection Dosimetry. 31:167-170
Using the variance-covariance method and a pair of wall-less spherical ionisation chambers, we have measured the dose mean lineal energy, yD, for 15 MeV neutrons in nine site diameters ranging from 4.7 µm down to 19 nm (mean chord lengths from 3.15
Publikováno v:
Radiation research. 161(4)
Although radiation-induced heritable damage in mammalian cells was thought to result from the direct interaction of radiation with DNA, it is now accepted that biological effects may occur in cells that were not themselves traversed by ionizing radia
Publikováno v:
AIP Conference Proceedings.
An apertured microbeam is used for single‐particle single‐cell irradiation to study radiobiological effects at the Radiological Research Accelerator Facility (RARAF), Center for Radiological Research, Columbia University. The present sample targe
Publikováno v:
Radiation research. 156(2)
This paper discusses two phenomena of importance at low doses that have an impact on the shape of the dose-response relationship. First, there is the bystander effect, the term used to describe the biological effects observed in cells that are not th
Publikováno v:
Radiation research. 155(3)
It has long been accepted that radiation-induced genetic effects require that DNA be hit and damaged directly by the radiation. Recently, evidence has accumulated that in cell populations exposed to low doses of alpha particles, biological effects oc
Publikováno v:
Radiation research. 145(3)
We report on the prevalence and relative biological effectiveness (RBE) for various stages of lens opacification in rats induced by very low doses (2 to 250 mGy) of medium-energy (440 keV) neutrons, compared to those for X rays. Neutron doses were de