Background: Neutron contamination is produced in electron beams of linac when tooth or dental materials are located in the path of beam. Objective: This study aims to determine the neutron dose contamination from different dental restoration materials in electron mode of a linac. Material and Methods: In this experimental study, the neutron dose contamination was calculated in the p...

This paper provides the overview of an integrated, multi-disciplinary effort to study the effects of the 29 March 2006 total solar eclipse on the environment, with special focus on the atmosphere. The eclipse has been visible over the Eastern Mediterranean, and on this occasion several research and academic institutes organised co-ordinated experimental campaigns, at different distances from ec...

We report on the first Green Bank Telescope observations at 427, 820 and 1400 MHz of the newly discovered, highly inclined and relativistic double pulsar binary. We focus on the brief eclipse of PSR J0737−3039A, the faster pulsar, when it passes behind PSR J0737−3039B. We measure a frequency-averaged eclipse duration of 26.6 ± 0.6 s, or 0.00301 ± 0.00008 in orbital phase. The eclipse duration i...

This paper introduces CPE, the CIRCE Plugin for Eclipse. The CPE adds to the open-source development environment Eclipse the ability of writing and analysing software requirements written in natural language. Models of the software described by the requirements can be examined on-line during the requirements writing process. Initial UML models and skeleton Java code can be generated from the re...

BACKGROUND A stemless shoulder prosthesis with humeral metaphyseal screw fixation was introduced in order to save bone-stock and to facilitate reconstruction of biomechanics (Eclipse®). The aim of this study was to analyze whether the risk of infection is different with this implant compared to conventional shoulder prosthesis. METHODS Two hundred and forty-one patients (54.8% females) were o...

The solar eclipse has a great influence on the variability of ionosphere because obscuration radiation. Using equatorial electrojet (EEJ) and plasma measurements from Swarm, zonal winds Michelson Interferometer for Global High-resolution Thermospheric Imaging Ionospheric Connection Explorer mission, electron density Constellation Observing Systems Meteorology, Ionosphere, Climate temporal respo...

OBJECTIVE To monitor the effect of a novel nicotine delivery device that may produce fewer carcinogens (Eclipse) on cigarette smoking, carbon monoxide and nicotine concentrations, and motivation to give up smoking. The smoker's own brand of cigarette and a nicotine replacement product (Nicotrol inhaler) were used as comparisons. DESIGN After baseline data were recorded, smokers were randomise...

A solar eclipse is an unusual natural occurrence. Muslims used the phenomenon of a as season for prayer, which was only carried out during from early in until end. Although there no statistically significant difference estimating eclipse, seasons change, becomes increasingly important. Lots alternatives can be reference determination eclipse. Among commonly calculation spherical astronomy. Desp...

CONTEXT The tobacco industry is introducing modified tobacco products claiming to reduce the risk of smoking (potential reduced exposure products, PREPs). If PREPs are perceived as safe, they may deter smokers from quitting and encourage re-initiation by smokers who have quit. OBJECTIVE To assess smokers' and ex-smokers' perceptions of PREPs and the impact of PREP claims on interest in quitti...

BACKGROUND The purpose of this study was to compare the ability of 3 portable oxygen concentrators (POCs) to maintain S(pO2) ≥ 90% during exercise in patients with chronic lung disease. METHODS Twenty-one subjects with chronic lung disease (18 with COPD, 3 with pulmonary fibrosis) and documented room air exertional S(pO2) ≤ 85% performed four 6-min walk tests: a control walk using the subject...