Biocompatible glass ceramics

Glass ceramic biomaterials in the Mg₃[PO₄]₂ - Ca₅[PO₄]₃F system are synthesized. The physicotechnical properties, phase composition, and microstructure of glass ceramics are investigated. The obtained glass ceramic biomaterials can be used for medical purposes.     

Low-melting glaze coatings for internal facing tiles

Translated from Steklo i Keramika, No. 5, pp. 16–17, May, 1993.     

Highly Refractory Alumina-Periclase-Carbon Ceramic Materials Based on a Spinel Binder

Refractories and Industrial Ceramics - Slag-resistant highly refractory alumina-periclase-carbon ceramic materials are synthesized on the basis of electrocorundum (Kazogneupor), Zinel’bulaksk...     

Proliferation and differentiation of hematopoietic stem cells during tumor growth

The influence of transplantable tumour on migration, proliferation and differentiation of haemopoietic stem cells was studied. It is shown that in the initial period of tumour development the migration and proliferation of stem cells intensify. In the final stage of the tumour growth the quantity of haemopoietic stem cells decreases considerably in the bone marrow, spleen, and peripheral blood. It is established that during the tumour growth the differentiation of stem cells from the spleen changed towards erythropoiesis.     

Ferroelectric‒to‒relaxor crossover in KNN‒based lead‒free piezoceramics

This study investigated the phase transition behavior and electrical properties of (K_0.5Na_0.5)(Nb_1-xZr_x)O₃ (KNN?100xZ) and (K_0.5Na_0.5)NbO₃–yBaZrO₃ (KNN–100yBZ) lead–free piezoelectric ceramics. The phase transitions in crystal structures were compared in KNN ceramics between single Zr⁴⁺ doping and Ba²⁺Zr⁴⁺ co?doping. Piezoelectric properties such as the piezoelectric constant (d₃₃) and electromechanical coupling factor (k_p) are optimized for KNN?6BZ ceramics and were clarified via the polymorphic phase transition from the orthorhombic to pseudocubic phase. The fitted degree of diffuseness (γ) for a phase transition from the modified Curie–Weiss law indicated that KNN ceramics as ferroelectrics are gradually transformed through BaZrO₃ modification. Accordingly, the enhanced strain properties at y = 0.08 consist of coexisting ferroelectric domains and polar nanoregions that are supported by ferroelectric–to–relaxor crossover in KNN?100BZ ceramics.