Numerous past studies of waterborne radon sampling and measurement techniques have concluded that today's most frequently used sample collection methods are cumbersome and/or require highly trained and careful technicians. All are prone to error if there is the slightest deviation from the prescribed procedure. Obtaining reasonable accuracy and precision requires a high skill level on the part ...

Considering a worldwide tendency, air transports are growing very fast and many changes have taken place in planning, management and decision making process. Given the complexity of airport operation, the best use of existing capacity is the key driver of efficiency and productivity. This paper deals with the evaluation framework for the ground access at airports, by using a set of mode choice ...

A linear regression model of particle pollution and an ordered logistic regression model of the relevant index were selected for observations in the US city of Los Angeles, California. Models were used to forecast Air Quality Index (AQI) from a sample, and were compared and contrasted. Methods are comparable overall but markedly different in their powers to predict certain categories. Linear re...

This paper introduces the krypton sampling and extraction facilities currently developed at the Centre for Science and Peace Research to collect and extract the krypton content from small air samples. The extraction unit able to isolate the krypton in small ambient air samples with high speed and high efficiency using a combination of cryogenic distillation and gas chromatography. Air samples a...

OBJECTIVE This report presents data from four studies to examine standard bone-conduction reference equivalent threshold force levels (RETFL), especially at 4 kHz where anomalous air-bone gaps are common. DESIGN Data were mined from studies that obtained air- and bone-conduction thresholds from normal-hearing and sensorineural hearing loss (SNHL) participants, using commercial audiometers and...

As the harmful effects of low-level exposure to hazardous organic air pollutants become more evident, there is constant pressure to improve the detection limits of indoor and ambient air monitoring methods, for example, by collecting larger air volumes and by optimising the sensitivity of the analytical detector. However, at the other end of the scale, rapid industrialisation in the developing ...

Organic matter extracts were obtained from particulates recovered from 10,000-m3 air samples collected in Sicily (Italy). The overall concentrations of acenaphthene, benzo(a)pyrene, phenanthrene, anthracene, fluoranthene, and pyrene were 526 ng/m3 air in a highly polluted urban area and 48 ng/m3 in a rural area affected by motor vehicle traffic pollution. After metabolic activation, both sample...

Results of the analysis of morphological status of cadets and pilots of the Croatian Air Force are presented, in relation to the morphological status of a sample of conscripts of the Croatian Army. The results of the morphological status of body built of the flier potential of the Croatian Air Force, i.e., the potential (cadets) and active fliers (pilots), suggest a process of spontaneous (or p...

This study assessed the public's health risk awareness of urban air pollution triggered by three megacities in China, and the data are the responses from a sample size of 3868 megacity inhabitants from Shanghai, Nanchang and Wuhan. Descriptive analyses were used to summarize the respondents' demographics, perceived health risks from air pollution and sources of health-related knowledge on urban...