The social impact of aging populations: some major issues.

Demographic trends regarding the issue of aging underscore the fact that both current situations and future trends directly concerns all of us. Aging is the reality for the future world. The pace at which demographic transition develops varies among countries and regions of the world, but most of the developed and developing countries will be challenged by increasing numbers of dependent individuals.

Intensity correlation of a two-frequency wave at the finite-aperture detector.

The measurement of the intensity of a wave propagating in a random medium results in a random signal response, the statistical properties of which are functions of the radiation wavelength and the ratio between the characteristic scale of the spatial intensity pattern and the size of the receiver aperture. In this paper, using multiscale solutions for high-frequency random propagators, we construct expressions for the integral intensity correlation measures that allow us to obtain the spectral intensity correlationcharacteristics and to analyze their variations as functions of wavelength separation and detector aperture. Numerical results are presented for a plane wave propagating in random media that are characterized by a Gaussian spectrum and by a power-law spectrum of the refractive-index fluctuations.

[Activity and molecular form of intestinal gamma-glutamyltransferase (GGT) EC 2.3.2.2. in celiac disease].

It has been shown that GGT activity in the duodenal biopsy homogenates of the children with coeliac disease (n-10) in remission (1 to 3 years of gluten-free diet) is lower than in those with other gastrointestinal tract diseases (n-6). In children with coeliac disease after gluten challenge (1 g of gluten) kg BW for 3 to 6 months) the GGT activity decreased fourfold (n-10). After a few months of gluten challenge there was in coeliac children (n-5) a marked predominance of GGT without sialic acid (the asialic GGT).

[Multi-indicator biochemical and clinical evaluation of occupational exposure of workers in the petrochemical industry. II. Results of the search for early clinico-biochemical signs of exposure to toxic substances present in the petrochemical industry. Analysis of the results of 5-year epidemiological studies].

The activities of GGT (EC 2.3.2.