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Radon is a naturally occurring volatile gas formed from the alpha radioactive decay of radium. It is colorless, odorless, tasteless, chemically inert, and radioactive. Of all the radioisotopes that contribute to natural background radiation, radon presents the largest risk to human health. This book discusses the geology, the environmental impact and the toxicity concerns of radon. Some of the topics included are the use of radon in balneotherapy; the health implications of radon in tap water; methods of radon measurement; and facts and interpretations of radon buildup in dwellings, spas and c

Radon --- Radon mitigation. --- Control of radon --- Mitigation of radon --- Radon control --- Radon pollution control --- Radon reduction --- Reduction of radon --- Pollution prevention --- Emanation (Radioactive substances) --- Emanon --- Niton --- Radium emanation --- Gases, Rare --- Radioactive substances --- Environmental aspects. --- Health aspects. --- Therapeutic use.

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This book is a comprehensive study of the Radon transform, which operates on a function by integrating it over hyperplanes. The book begins with an elementary and graphical introduction to the Radon transform, tomography and CT scanners, followed by a rigorous development of the basic properties of the Radon transform. Next the author introduces Grassmann manifolds in the study of the k-plane transform (a version of the Radon transform) which integrates over k-dimensional planes rather than hyperplanes. The remaining chapters are concerned with more advanced topics, such as the attenuated Radon transform and generalized Radon transforms defined by duality of homogeneous spaces and double fibrations. Questions of invertibility and the range of the Radon transform are dealt with and inversion formulas are developed with particular attention to functions on L2 spaces and some discussion of the case of Lp spaces.

Radon transforms --- Geometric tomography --- Geometric tomography. --- Radon transforms. --- Tomography (Mathematics) --- Tomography, Geometric --- Convex geometry --- Integral transforms --- Tomography --- Transforms, Radon --- Integral geometry

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This book describes hazards from radon progeny and other alpha-emitters that humans may inhale or ingest from their environment. In their analysis, the authors summarize in one document clinical and epidemiological evidence, the results of animal studies, research on alpha-particle damage at the cellular level, metabolic pathways for internal alpha-emitters, dosimetry and microdosimetry of radionuclides deposited in specific tissues, and the chemical toxicity of some low-specific-activity alpha-emitters. Techniques for estimating the risks to humans posed by radon and other internally deposited alpha-emitters are offered, along with a discussion of formulas, models, methods, and the level of uncertainty inherent in the risk estimates.

Radiation --- Environmental aspects. --- Internal Medicine --- Medical --- Radon --- Science

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This book presents the mechanism of in-situ radon volatilization and outlines the geological requisites to site a radon monitoring well for earthquake warning. A small fractured aquifer under undrained conditions is an effective natural strain meter for earthquake prediction. It shows significant merit on a local basis, and most importantly, the analysis can also be applied globally in subduction zones with similar tectonic settings and physical–chemical relationships. Between 2003 and 2010, anomalous declines in groundwater radon concentration were recurrently recorded at Antung, Taiwan, which are considered as precursory to local major earthquakes. The correlations between radon decline and earthquake magnitude are useful for early warning of local main earthquakes. The book consists of 7 chapters. Chapter 1 presents background information and the objectives of the book. Chapter 2 illustrates the methods of monitoring groundwater radon and a brief review of earthquake prediction research using groundwater radon. Chapter 3 provides the details of anomalous decrease in groundwater radon before the Taiwan Mw 6.8 Chengkung Earthquake of 2003. Chapter 4 provides the description of the mechanism of groundwater-radon volatilization. Chapter 5 shows the recurrent anomalous declines in groundwater radon concentration consistently recorded at Antung, Taiwan, prior to local main earthquakes that occurred between 2003 and 2010. Monitoring groundwater radon in small, unconfined fractured aquifers is explained in Chapter 6, followed by an analysis of correlating precursory declines in groundwater radon, precursory time with earthquake magnitudes for small, confined fractured aquifers in Chapter 7.

Geochemistry. --- Geophysics. --- Geology. --- Natural disasters. --- Natural Hazards. --- Earthquake prediction --- Radon as a groundwater tracer

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The book is devoted to the structural analysis of vector and random (or both) valued countably additive measures, and used for integral representations of random fields. The spaces can be Banach or Frechet types. Several stationary aspects and related processes are analyzed whilst numerous new results are included and many research avenues are opened up.

Vector-valued measures. --- Random measures. --- Measures, Random --- Orthogonal random measures --- Measure theory --- Stochastic processes --- Measures, Vector-valued --- Radon measures