Impact of Physical Exercise on Symptoms of Depression and Anxiety in Pre-adolescents: A Pilot Randomized Trial.

Aim: The intensity of the most appropriate exercise to use in depressed youth is unclear due to differences in methodology and the lack of evidence documenting the effect of physical activity in children. Therefore, the authors of this study attempted to document the effectiveness of different training intensities to reduce symptoms of depression and anxiety in pre-teens.

Methods: The study included twenty-seven, randomly selected pre-adolescents (aged between 9-11 years of age) all of whom had Primary education.

Cation deficient layered Ruddlesden-Popper-related oxysulfides La2LnMS2O5 (Ln=La, Y; M=Nb, Ta).

The structures of the new oxysulfide Ruddlesden-Popper phases La2LnMS2O5 (Ln=La, Y; M=Nb, Ta) are reported together with an iodide-containing variant: La3-xNb1+xS2O5I2x (0 View Article and Find Full Text PDF

Design of a new family of inorganic compounds Ae2F2SnX3 (Ae = Sr, Ba; X = S, Se) using rock salt and fluorite 2D building blocks.

We could predict the structure of a new family of compounds Ae(2)F(2)SnX(3) (Ae = Sr, Ba; X = S, Se) from the stacking of known 2D building blocks of the rock salt and fluorite types. With a high-temperature ceramic method we have then succeeded to synthesize the four compounds Ba(2)F(2)SnS(3), Ba(2)F(2)SnSe(3), Sr(2)F(2)SnS(3), and Sr(2)F(2)SnSe(3). The structure refinements from X-ray powder diffraction patterns have confirmed the structure predictions and showed their good accuracy.

A new lanthanum titanium oxysulfide, La(16)Ti(5)S(17+x)O(17), with x = 0.75 (9).

The title compound, hexadecalanthanum pentatitanium heptadecasulfide heptadecaoxide, La(16)Ti(5)S(17+x)O(17) [x = 0.75 (9)], has been obtained as a by-product in the preparation of new oxychalcogenide compounds in the La/Ti/Ag/S/O system. La(16)Ti(5)S(17+x)O(17) crystallizes in the tetragonal system (space group I4/m) and is isostructural with Nd(16)Ti(5)S(17)O(17).

A mixed-valent niobium oxysulfide, La2Nb3S2O8.

Dilanthanum triniobium disulfide octaoxide, La(2)Nb(3)S(2)O(8), crystallizes in the orthorhombic space group Pnnm and is isostructural with the Ln(2)Ta(3)X(2)O(8) (Ln = La, Ce, Pr and Nd, and X = S and Se) family of tantalum compounds. Nb(4+) and Nb(5+) ions co-exist in the structure and occupy different crystallographic sites. While the Nb(4+) ions are found in mixed oxygen and sulfur octahedra, the Nb(5+) ions are found in oxygen-only octahedra.