The effects of the positron (e(+)) annihilation in e(+) scattering by the H atom are included directly in the Hamiltonian as an absorption potential, and hence the finite lifetimes Gamma(ns) of positronium (Ps) in states ns are automatically taken account of. The Schrödinger equation is solved using the hyperspherical close-coupling method. The annihilation and Ps formation are shown to be inse...

The mesolimbic dopamine (DA) system has been associated with the pathogenesis of schizophrenia. Here, we examined DA-containing neuronal structures of the ventral tegmental area (VTA) of an autopsy case of disorganized type of schizophrenia (75-year-old female), using tyrosine hydroxylase (TH) immunohistochemistry. A free floating method using 50-μm cryostat sections and three-dimensional imagi...

The hydration structure of two actinoid ions of different charge, Cm(III) and Th(IV), was investigated. Density Functional Theory, DFT-based molecular dynamics and the single sweep method were used to obtain free energy landscapes of ion-water coordination. Free energy curves as a function of the ion-water coordination number were obtained for both ions. The number of water molecules in the fir...

This manuscript describes a new protocol for determination of Pa/Th/U in marine sediments. It is based on microwave-assisted digestion and represents an important reduction of working time over conventional hot-plate digestion methods, and the use of HClO(4) is avoided. Although Th and U are completely dissolved with a first microwave step, around 40% of (231)Pa remains undissolved, and a short...

A new water-soluble embedding agent, tr ial p roduc t CIBA X 133/20971 has recently been in t roduced for selected electron microscopic investigations (1). D u r c u p a n subsequently proved to be miscible wi th the water-insoluble epoxy resin Araldi te 2 which is commonly used for tissue embedding (2). In this way, an imal tissues can be embedded in Araldi te wi thout being b rough t into con...

Anti-Th/To autoantibodies have been recognized as serological markers of systemic sclerosis (SSc) for more than 20 years. However, validated immunoassay kits to test this specificity have not been commercially available. SSc autoantibodies are basically mutually exclusive and are associated with a certain subset of the disease and/or with organ involvement. Anti-Th/To are generally considered t...

Probabil istic networks which provide compact descriptions of complex stochastic relationships among several random variables are rapidly becoming the tool of choice for uncertain reasoning in artif icial intelligence We show that networks wi th fixed structure containing hidden variables can be learned automatically f rom data using a gradient-descent mechanism similar to that used in neural n...

The main purpose of this paper is using the elementary method and analytic method to study the asymptotic properties of the integer part of the k-th root positive integer, and give two interesting asymptotic formulae.