0000000000214861

AUTHOR

Liga Berzina-cimdina

showing 5 related works from this author

Characterization of Rabbit Mesenchymal Cell Attachment on Calcium Phosphate Surface

2014

In the current study, the effect of three different treated surfaces of hydroxyapatite and β-tricalcium phosphate on mesenchymal cell attachment has been investigated. Calcium phosphate powders have been synthesized, uniaxially pressed, polished and sintered. Mesenchymal cells have been seeded onto unpolished, polished and polished-thermally etched ceramic samples. The ceramic samples have been characterized by XRD, FTIR and SEM. Results have shown that the best cell attachment and morphology are on the unpolished surface indicating that relatively rough surface is better for cell application.

implant surfaceMaterials scienceMorphology (linguistics)mesenchymal cellsMesenchymal stem celltechnology industry and agriculturechemistry.chemical_elementRabbit (nuclear engineering)CalciumPhosphateβ-tricalcium phosphatehumanitieseye diseasesHydroxyapatitechemistry.chemical_compoundchemistryChemical engineeringvisual_artRough surfaceHydroxyapatite implant surface mesenchymal cells β-tricalcium phosphatevisual_art.visual_art_mediumCeramicFourier transform infrared spectroscopyBiomedical engineering
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Studies of TiO<sub>2</sub> Ceramics Structure after Thermal Treatment at Different Conditions

2014

The present work describes results of investigation of structural characteristics of TiO2 ceramics, depending on temperature and thermal treatment conditions by using a variety of characterization techniques. TiO2 ceramics was prepared by extrusion method and developed as a material for electrodes for innovative water treatment technologies. It was shown that non-stoichiometric phase TiO1.95 was observed after thermal treatment of TiO2 ceramics under high vacuum conditions.

Materials scienceMechanical EngineeringUltra-high vacuumMetallurgyThermal treatmentCharacterization (materials science)Mechanics of Materialsvisual_artPhase (matter)Electrodevisual_art.visual_art_mediumGeneral Materials ScienceWater treatmentExtrusionCeramicKey Engineering Materials
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Functionalized silver doped hydroxyapatite scaffolds for controlled simultaneous silver ion and drug delivery

2017

Abstract Bacterial infections are a major problem in bone tissue regeneration, thus it is essential to incorporate antibacterial properties within the bone scaffolds. Silver compounds are frequently used as antibacterial agents to prevent bacterial infections and numerous studies have shown that silver ions can be incorporated within the biocompatible and osteoconductive biomaterial hydroxyapatite (HAp) structure, but, so far, no study has thoroughly evaluated silver ion release rates in long term. Therefore, we have established a novel carrier system for local drug delivery based on functionalized silver doped hydroxyapatite with determined long term silver ion release rates. Silver ions f…

Materials scienceCarrier systemProcess Chemistry and TechnologySimulated body fluidBiomaterial02 engineering and technologyLidocaine Hydrochloride010402 general chemistry021001 nanoscience & nanotechnologyBone tissue01 natural sciences0104 chemical sciencesSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsChitosanchemistry.chemical_compoundmedicine.anatomical_structurechemistryChemical engineeringDrug deliveryMaterials ChemistryCeramics and Compositesmedicine0210 nano-technologyAntibacterial activityCeramics International
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Electrochemical Studies of Nonstoichiometric TiO<sub>2-x</sub> Ceramic

2014

TiO2 ceramic was prepared using extrusion technology and thermal treatment in two stages: sintering in air and subsequent annealing under high vacuum conditions. Sample thermal treatment in high vacuum conditions causes formation of nonstoichiometric titanium oxide ceramic. As a result electrical conductivity of the material significantly increases. Such a material can be used for electrode production for electrochemical water treatment.

Materials scienceAnnealing (metallurgy)Mechanical EngineeringMetallurgyUltra-high vacuumSinteringThermal treatmentTitanium oxideMechanics of Materialsvisual_artElectrodevisual_art.visual_art_mediumGeneral Materials ScienceExtrusionCeramicKey Engineering Materials
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Phase Transition in Niobophosphate Glass-Ceramic

2011

Phase transition during crystallization of glass to glass-ceramic in system P2O5-CaO-Nb2O5-Na2O was studied. Several heating rates were compared – 1, 2, 5, 11 and 20°Cmin-1. DTA, XRD, FTIR and Raman analyses were performed. Niobophosphate glass-ceramic is found to form utterly different crystalline phases depending on maximal heating temperature, heating rate and time of maximal temperature maintenance. Crystallization temperatures of the same phases are strongly dependent on heating rate, while crystallinity of obtained phases is not. At lower temperatures poorly crystalline phosphates (Ca3(PO4)2, Ca10Na(PO4)7, Ca2P2O7) and niobates (NaNbO3 and Nb2O5) are identified. At higher temperatures…

Phase transitionGlass-ceramicMaterials scienceGeneral Engineeringlaw.inventionCrystallinityCrystallographysymbols.namesakeChemical engineeringlawHeating temperaturesymbolsCrystallizationFourier transform infrared spectroscopyRaman spectroscopyAdvanced Materials Research
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