The shielding calculations for high energy (>10 MV) linear accelerators must include the photoneutron production within the head of the accelerator. Procedures have been described to calculate the treatment room door shielding based on the neutron source strength (Q value) for a specific accelerator and energy combination. Unfortunately, there is currently little data in the literature stating ...

Three experiments testing the effectiveness of the foot-in-the-door technique for recruiting blood donors consistently failed to demonstrate that this procedure influences either verbal or behavioral compliance, suggesting that the generality of the foot-in-the-door phenomenon is limited. Experiment 1 attempted to demonstrate that an earlier failure of this technique was due to poor operational...

For passive scattering proton therapy systems, neutron contamination is the main concern both from an occupational and patient safety perspective. The Mevion S250 compact proton therapy system is the first of its kind, offering an in-room cyclotron design which prompts more concern for shielding assessment. The purpose of this study was to accomplish an in-depth evaluation of both the shielding...

COVID-19 caused by severe acute respiratory syndrome (SARS) has accounted for huge collateral damage and as the virus is spreading faster this study deals with isolation rooms or negative pressure 12 more air changes per hour maintaining a difference of 2.5 pa which can help in reducing transmission from affected to not persons. ANSI/ASHRAE/ASHE Standard 170–2008 recommendations are followed ho...

Elementary decision-theoretic analysis of the Monty Hall dilemma shows that the problem has dominance. This makes possible to discard nonswitching strategies, without making any assumptions on the prior distribution of factors out of control of the decision maker. A path to the Bayesian and the minimax decision-making environments is then straightforward. Suppose there is a set of ‘doors’ D wit...

The objective of this study was to analyze the dependence neutron dose from geometry second band maze using dosimetric measurements neutrons and Monte Carlo simulations, based on those results design a novel radiotherapy room layout. Measurements at two-band therapy were performed for 15 MeV photon beam only. simulations GEANT4 toolkit. In order obtain dependence, we changing angle while kept l...

OBJECTIVE To determine the typical microbial bioburden (overall bacterial and multidrug-resistant organisms [MDROs]) on high-touch healthcare environmental surfaces after routine or terminal cleaning. DESIGN Prospective 2.5-year microbiological survey of large surface areas (>1,000 cm2). SETTING MDRO contact-precaution rooms from 9 acute-care hospitals and 2 long-term care facilities in 4 state...