A simple method was developed, for possible use by hospital physicists, to evaluate the irradiation effects on cables and connectors during large-radiation-field dosimetry with ionization chambers and to determine correction factors for the used system or geometry. This method was based on the absorbed dose dependence of the correction factor.

In this article the differences between blood bank 8...'1d normal blood is shown. The danger of massive blood transfusion specially in shocked patient is discussed. The importance of warm blood, correction of acidosis with ventilation and bicarbonate, and the use of fresh plasma to compensate the reduction of coagulation factors are mentioned. The value of acid­phosphaite-dexterose (APD) as sto...

Allometric relationships are commonly used to estimate average biomass of trees of a particular size and to predict biomass of individual trees based on an easily measured covariate variable such as stem diameter. They are typically power relationships which, for the purpose of data fitting, are transformed using natural logarithms to convert the model to its linear equivalent. Implementation o...

background & aims of the study: musculoskeletal disorders (msds) are part of the main occupational diseases in the workplace. occupations such as hairdressers are exposed to multiple risk factors of these problems. the study was conducted to assess msds and posture analysis among female hairdressers in tehran, 2015. materials and methods: in this cross-sectional research, 114 participants were ...

Silicon diode dosimeters have been used routinely for in-vivo dosimetry. Despite their popularity, an appropriate implementation of an in-vivo dosimetry program using diode detectors remains a challenge for clinical physicists. One common approach is to relate the diode readout to the entrance dose, that is, dose to the reference depth of maximum dose such as d(max) for the 10x10 cm(2) field. V...

this study aimed at comparing the impact of two types of teacher feedback on iranian efl learners’ writing ability and their verb tense consistency in l2 writing. following the administration of a standardized language proficiency test (preliminary english test), sixty-two participants were selected and were randomly assigned to the control (direct-only correction) and experimental (direct meta...

Small refractive errors present a group of specifc far-sighted refractive dispositions that are compensated by enhanced accommodative exertion and aren't exhibited by loss of the visual acuity. This paper should answer a few questions about their correction, flowing from theoretical presumptions and expectations of this dilemma. The main goal of this research was to (dis)confirm the hypothesis ...

BACKGROUND In nuclear medicine, liquid radiopharmaceuticals for diagnostic or therapeutic purposes are administered to patients by using various types of syringes with different volumes. The activity of each "dose" must be carefully measured and documented prior to administration using an activity calibrator. METHODS Calibrator response is a function of the measurement geometry and, in partic...