The mixing of graviphotons and dark brane photons to the Standard Model hypercharge is analyzed in full generality, weakly-coupled string theory. Both direct as well effective terms that provide after inclusion SM corrections are estimated lowest order. results compared with Effective Field Theory (EFT) couplings, originating a hidden large-N theory coupled where composite. typically subleading...

The objective of present study was to classify oral mucositis according to the Common Toxicity Criterion (CTC) international parameters in head and neck tumor patients simultaneously treated with radio and chemotherapy, and characterize a patient profile in our area, observing the individuals' habits, tumor characteristics, treatment protocol and acute reaction intensity. Fifty patients undergo...

disease tends to recur in a treated field with a frequency which is inversely related to dose and approaches zero at a dose of approximately 4000 rads, delivered at the rate of about 1000 rads/week. Such doses make the use of megavoltage X-ray beams mandatory to avoid severe skin reactions, but are other wise well tolerated by the normal tissues. The inverse relation ship of recurrence rate to ...

The purpose of this paper is to describe the reproducibility of liver position using Active Breathing Coordinator in a larger series of patients with more advanced liver cancer, consecutively planned for SBRT delivered in six fractions over two weeks. In this study, repeat megavoltage (MV) verification imaging, real-time beams-eye-view MV movies, conventional kV fluoroscopy, cone beam kV fluoro...

This study proposes a new method for removal of metal artifacts from megavoltage cone beam computed tomography (MVCBCT) and kilovoltage CT (kVCT) images. Both images were combined to obtain prior image, which was forward projected to obtain surrogate data and replace metal trace in the uncorrected kVCT image. The corrected image was then reconstructed through filtered back projection. A similar...

We present a simple method of removing the singularities associated with soft photon emission to all orders in perturbation theory through exponentiation, while keeping a consistent description of hard photon emission. We apply this method to the process e + e ? ! + ? + n where we include both Z 0 and exchange and retain the muon mass dependence. The photonic radiation is allowed to be radiated...