Radioactive toothpaste and reversed helicity

Measurements of the MHD dynamo in the quasi-single-helicity reversed-field pinch.

The first experimental study of the MHD dynamo in a quasi-single-helicity (QSH) reversed-field pinch toroidal plasma is presented. In QSH plasmas, a dominant wave number appears in the velocity fluctuation spectrum. This velocity component extends throughout the plasma volume and couples with magnetic fluctuations to produce a significant MHD dynamo electric field. The narrowing of the velocity...

Single-helicity states in compressible magnetohydrodynamics simulations of the reversed-field pinch with nonuniform resistivity

Using a magnetohydrodynamics numerical code that includes the description of density and pressure evolution and anisotropic thermal conductivity, it is shown that single-helicity states in the reversed-field pinch (RFP) configuration are obtained when the resistivity has a radial profile sharply increasing close to the wall. In contrast, a uniform resistivity produces multiple-helicity states. ...

Toothpaste allergy diagnosis and management.

42 CLINICAL CONTACT DERMATITIS Case An 81-year-old man presented with a recalcitrant case of cheilitis that had been ongoing for seven months (Figure 1). His dermatitis was extremely itchy and painful. It was predominantly right sided, but extended around his mouth and even on to his lip mucosa. The lower vermillion border was obscured by the eruption. His lips were fissured, intensely dry, and...

Radioactive iodine and radioactive cesium: two important radio-hazard elements in post nuclear power plant crisis

The present nuclear leakage crisis from Japan is a topic to be discussed in present public health. In radiology, the leaked radioactive elements are considered hazard. Here, the author briefly reviews and discusses on two important radio-hazard elements in post nuclear power plant crisis, radioactive iodine and radioactive cesium. Based on previous similar nuclear crisis in Russia, it ...

On fluoride toothpaste – knowledge, attitudes and behaviour