Linear accelerators used in radiation therapy treatments usually provide the capability of irradiating with different dose rates. The medical physicist may choose arbitrary the dose rate to use, although the relative biological effectiveness (RBE) varies with this physical parameter. In this work the measurements of absorbed dose of the x-ray beams from a Varian 6 MV linear accelerator CLINAC 6...

The practice of using the direct ionization radiation (electrons, protons, antiprotons, pions, ions, etc) or of the indirect ionization radiation (photons, neutrons, etc) in economy and social life has led to the introduction of the absorbed dose magnitude (ICRU 1953) defined as the energy absorbed per mass unit of the irradiated substance. This is a fundamental magnitude valid for any type of ...

INTRODUCTION We investigated the relation between changes in clinician-based and patient-based measures of tremor severity, within the Fahn-Tolosa-Marin Tremor Rating Scale (TRS) and Visual Analogue Scale (VAS) in essential tremor patients. METHODS Thirty-seven patients were assessed twice: on- and off-medication. Clinician-based, objective TRS assessments, consisting of part A (postures/move...

MOTIVATION Over-represented k-mers in non-coding genomic regions often lead to identification of potential transcriptional regulatory sites (TRS). This phenomenon has been employed by many algorithms to predict TRS in silico. Yet, the improvement of these algorithms should be based on deeper understanding of the enrichment feature. To obtain a general distributional profile of TRS in different ...

One of the main objectives Secondary Standard Dosimetry Laboratory (SSDL) in radiotherapy dosimetry is verifying radiation dose provided to patients accurate and meets globally recognised standards. Properly calibrating therapy dosimeters used centres first step SSDL must take ensure this goal attained. This study analyses calibration coefficients long-term stability calibrated by Nuklear Malay...

We define a new notion of fairness for term rewriting system (TRS). We prove the modularity of termination of TRS under such fair strategies, that is, two TRS terminate under fair strategies if and only if their disjoint union terminates under fair strategies. In order to do so, we demonstrate that termination under fair strategies of a TRS is equivalent to the TRS being weakly terminating and ...

The present work compared the relative absorbed dose of some dosimetric materials, for energies 250 kV and 6 MV, using PENELOPE MNCPX codes. composition each material GD-301, TLD-100, MAGIC, MAGAT were simulated disposed in a phantom filled with water following reference conditions recommended by TRS-398 protocol. Percentage depth was used as parameter comparison. Since obtained results both co...

Treatment-resistant schizophrenia (TRS) is a severe form of schizophrenia with high prevalence and human impact. Our aim was to perform a systematic review to find out the extent of published research on TRS and to determine the current knowledge of TRS. Studies were systematically collected using the databases of PubMed, Scopus and CINAHL. English language original studies and reviews on TRS w...

A term rewrite system (TRS) terminates ii its rules are contained in a reduction ordering >. In order to deal with any set of equations, including inherently non-terminating ones (like commutativity), TRS have been generalised to ordered TRS (E; >), where equations of E are applied in whatever direction agrees with >. The connuence of terminating TRS is well-known to be decidable, but for order...