Carbon ion radiotherapy holds great promise for cancer therapy. Clinical data show that carbon ion radiotherapy is an effective treatment for tumors that are resistant to X-ray radiotherapy. Since 1994 in Japan, the National Institute of Radiological Sciences has been heading the development of carbon ion radiotherapy using the Heavy Ion Medical Accelerator in Chiba. The Gunma University Heavy ...

A novel collisionless shock jump condition is suggested by modeling the entropy production at transition region. We also calculate downstream developments of atomic ionization balance and ion temperature relaxation in supernova remnants (SNRs). The injection process subsequent acceleration cosmic-rays (CRs) SNR shocks are closely related to formation shocks. caused wave-particle interactions. S...

Sawtooth oscittations in the themonuctea& neutton ptoduction Aate have been ob.erved in AtcatoA. They axe coAtelated with oscdJations in zoit x-ay emizzion 6'Lom the p&a.ma and indicate tavge (>15%) o6ciftation4 o6 centWaL ion tempexatue. Soft x-ray emission from the Alcator plasma has been observed using a multi-diode imaging apparatus built by Petrasso et al [1]. The x-ray flux exhibits the c...

Precision electroweak measurements are presently providing a sensitive probe for new physics at and above the scale of weak interactions. It has been stressed [ 1 ] that the effects of new heavy particles which do not couple directly to light fermions are manifest almost entirely in correct ions to the vacuum polarization ampli tudes of the electroweak gauge bosons. We find that an effective la...

The direct biological effects of radiation, particularly accelerated heavy particle ions, on neurons are not fully known. Hence, the direct effect of carbon-ion beams on immature neurons was investigated by comparing to the effect of X-rays in vitro using primary hippocampal neurons. Primary neurons were prepared from hippocampi of fetal rats at embryonic day 18 from timed pregnant Wistar rats ...

Abstract Background Determination of near-surface residual stresses is challenging for the available measurement techniques due to their limitations. These are often either beyond reach or associated with significant uncertainties. Objective This study describes a critical comparison between three methods surface and stress measurements, including x-ray diffraction (XRD) two incremental central...

It is claimed that ultra-relativistic, magnetized, electron-ion shocks are, for most magnetic geometries, poor accelerators of non-thermal particles. The phenomenon of “missing” early X-ray afterglow observed in many of the Swift gamma-ray burst (GRB) afterglow data may simply be due to this fact. Rapid time variability of the X-ray emission could be produced by fluctuations in the orientation ...

The purpose of this study is to clarify the effect of a heat shock protein 90 inhibitor, 17-allylamino-17-demethoxygeldanamycin (17-AAG), in combination with X-rays or carbon-ion beams on cell killing in human oral squamous cell carcinoma LMF4 cells. Cell survival was measured by colony formation assay. Cell-cycle distribution was analyzed by flow cytometry. Expression of DNA repair-related pro...