Structural and spectroscopic insights into the performance of KTb(PO) green phosphor.

A narrow-band green emitting KTb(PO) phosphor has been synthesized by a novel single-crystal growth approach involving the application of an inert flux. Its structural and spectroscopic peculiarities have been systematically studied by means of single-crystal X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy analysis, and diffuse reflectance, infrared and photoluminescence spectroscopy. The layered framework of the title compound is organized by linking together slightly distorted phosphate tetrahedra with non-condensed TbO polyhedra into [Tb(PO)] sheets interconnected by potassium cations.

Crystal structure of a layered phosphate molybdate KGd(PO)(MoO).

The title compound dipotassium gadolinium(III) phosphate(V) molybdate(VI), KGd(PO)(MoO), was synthesized from a high-temperature melt starting from GdF as a source of gadolinium. Its structure is isotypic with other ( O)(PO) compounds, where = Na, K or Cs, and = rare-earth cation, = Mo or W. The three-dimensional framework is built up from [Gd(PO)(MoO)] anionic sheets, which are organized by adhesion of [GdPO] layers and [MoO] tetra-hedra stacked above and below these layers.

Crystal growth, layered structure and luminescence properties of KEu(PO)(WO).

KEu(PO)(WO) has been prepared the high-temperature solution growth (HTSG) method using KWO-KPO molten salts as a self-flux and characterized by single-crystal X-ray diffraction analysis, IR and luminescence spectroscopy. The structure of this new compound features a 2D framework containing [EuPO] layers, which are composed of zigzag chains of [EuO] interlinked by slightly distorted PO tetrahedra. Isolated WO tetrahedra are attached above and below these layers, leaving space for the K counter-cations.

Pregnancy, complicated by preeclampsia: fetoplacental complex immune deadaptation and histostructural features.

Objective: The aim: to study and compare the features of the interleukins levels and morphological changes of placenta at various stages of preeclampsia.

Patients And Methods: Materials and methods: 109 pregnant women with preeclampsia of varying severity (study group) and 30 pregnant women with uncomplicated pregnancy (control group) were examined. Immunohistochemical method, proinflammatory interleukins levels, morphological and morphometric analysis of peripheral and central placental areas biopsies on the optical and electron-microscopic level have been used.

[Prognostication of medication costs for elderly patients at in-hospital treatment stage].

Based on data analysis concerning the character and the frequency of diseases as well as medication therapy costs, there has been developed a functional model of the provision of needs in costs on medication aid for elderly and advanced old people in patient care institutions. This model allows take into account age peculiarities of the patients (polymorbidity, disease severity, regional differences in the character of pathology).