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Search results for: sciernice elektrokorundowe
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Identification and antimicrobial resistance of Enterococcus spp. isolated from surface water
PublicationIn the study species distributions and antimicrobial resistance profiles were determined among riverine Enterococcus spp. Susceptibility of the isolates was tested against: ampicillin, imipenem, teicoplanin, vancomycin, erythromycin, linezolid, fosfomycin, ciprofloxacin,levofloxacin, moxifloxacin, tetracycline, high levels of gentamicin and streptomycin. The enterococci were detected in all of the analyzed water samples, periodically...
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Nanotubular Titanium Oxide Layers for Enhancement of Bone-Implant Bonding and Bioactivity
PublicationThe present paper describes the techniques to improve the bioactivity of titanium and enhance the bone-implant bonding ability by the electrochemical anodization to fabricate titania nanotube arrays (TiO2).
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A Multi Rig Screening Test for Thin Ceramic Coatings in Bio - Tribological Applications
PublicationA method is presented for the comparative testing of wear resistance of ceramic coatings made from materials potentially feasible in tribo - medical applications, mainly orthopaedic implants made from ceramics coated metals for low cost, long life and low wear particle emission into the body. The method was devised as the main tool for use in research and is comprised of flat on flat and ball on flat surface (sliding) tests. Seven...
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Biocompatibility and bioactivity of load-bearing metallic implants
PublicationThe main objective of here presented research is to develop the titanium (Ti) alloy base composite materials possessing better biocompatibility, longer lifetime and bioactivity behaviour for load-bearing implants, e.g. hip joint and knee joint endoprosthesis. The development of such materials is performed through: modeling the material behaviour in biological environment in long time and developing of new procedures for such evaluation;...
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Reactions on the surface of the implant under the influence of biofilm
PublicationThe contact of a biomaterial with the biological environment in in vitro and in vivo tests leads to the production of a particular ecosystem in which the active roles perform both, the material surface and the extracellular matrix protein forming a biofilm. Proteins affect cell and bacteria adhesion processes, biological activity of cells and activation of inflammatory response.The knowledge of the reaction mechanisms active on...
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Preparation of silver nanoparticles in reverse micelles and antibacterial activity of silver modified-paints
PublicationW publikacji została opisana metoda otrzymywania nanocząstek srebra oraz farb modyfikowanych srebrem i ich wpływ na zahamowanie rozwoju wybranych bakterii i grzybów. Podjęto również próbę porównania wpływu rodzaju prekursora srebra oraz substancji powierzchniowo czynnej na stabilność otrzymanych nanocząstek srebra. Przygotowane mikroemulsje zawierały od 500 do 2000 ppm srebra
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Allergic reactions as a defense of the organism to the influence of implants components made of stainless steel
PublicationDue to the increasing number of cases of hypersensitivity caused by direct contact with metals, as well as the increasing demand for implants in humans all ages numerous studies on the effects of the impact of implant components are being carried out. The paper presents the phenomenon of etiology of allergy in general terms and in relation to the biomaterials used in medicine. There have been characterized in terms of impact on...
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Biocompatibility and Bioactivity of Load-Bearing Metallic Implants
PublicationThe main objective of here presented research is to develop the titanium (Ti) alloy base composite materials possessing better biocompatibility, longer lifetime and bioactivity behaviour for load-bearing implants, e.g. hip joint and knee joint endoprosthesis. The development of such materials is performed through: modeling the material behaviour in biological environment in long time and developing of new procedures for such evaluation;...
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Nanotechnologies in Development of Structural Materials and Biomaterials
PublicationThe nanometric materials and technologies resulted in nanostructures are reviewed. The examples of nanomaterials are shown. The typical nanotechnologies, including plastic deformation, mechanical attrition, controlled detonation, hot plasma jet synthesis, laser vaporisation, CVD and PVD, mechanical milling, annealing, ultrasonic irradiation, nanolithography, electrocrystallisation, electrospinning, sol-gel method, cryogenic laser-enhanced...
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Development of headspace-gas chromatography-flame ionization detection procedure to determine volatile fatty acids in zoo organic waste leachate
PublicationNadrzędnym celem pracy było opracowanie metodyki oznaczania lotnych kwasów tłuszczowych z fazy nadpowierzchniowej opartej na chromatografii gazowej z detektorem płomieniowo-jonizacyjnym oraz sprawdzenie jej przydatności w analizie próbek odcieku ze składowiska odpadów ogrodu zoologicznego. Na podstawie przeprowadzonych badań określono warunki, w jakich przebiegać powinna izolacja lotnych kwasów tłuszczowych, a także określono najlepsze...
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Two tests for adhesive bonding long term characterization: principles and applications
PublicationThis article describes recent refinement of the traditional wedge test technique used to characterize durability of the adhesive joints. We propose two types of measuring protocols to monitor precisely and continuously the propagation of an "effective" crack during long term mode I fracture mechanic test. First method is directly derived from the traditional wedge test technique and consist in monitoring the surface strain of adherent...
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Consensus models: Computational complexity aspects in modern approaches to the list coloring problem
PublicationArtykuł poświęcony jest nowym modelom konsensusowego kolorowania grafów. Artykuł zawiera omówienie trzech takich modeli, analizę ich złożoności obliczeniowej oraz wielomianowy algorytm dla częściowych k-drzew, dla tzw. modelu addytywnego.
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Porous biomaterial for orthopaedic implants based on titanium alloy
PublicationTytan i jego stopy są szeroko stosowane jako biomateriały dla zastosowań ortopedycznych. Badania związane z ich najlepszą odpornością na korozję i ścieranie, biozgodnością i bioaktywnością są stale prowadzone. Obecne badania koncentrują się również na projektowaniu i produkcji materiałów porowatych w oparciu o stopy np. Ti-13Nb-13Zr, które mogą być stosowane do wytwarzania implantów. Jedną z najbardziej efektywnych metod wytwarzania...
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Effects of rapid heating on non-equilibrium microstructure evolution and strengthening mechanisms of titanium alloy
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Addressing a bottle neck for regulation of nanomaterials: quantitative read-across (Nano-QRA) algorithm for cases when only limited data is available
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Structure and electrochemical reactivity of new sulphur–silicon podands adsorbed on silver or gold surfaces
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Using AOP-Wiki to support the ecotoxicological risk assessment of nanomaterials: first steps in the development of novel adverse outcome pathways
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A New Metric for Long-Range Transport Potential of Chemicals
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Epidemiology and Prevention: A S ystem-Based Approach. Edited by John Yarnell. Pp. 312. (Oxford University Press, Oxford, 2006.) £19.99, ISBN 9-780-198-530145, paperback.
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Changes in wetting properties of silica surface treated with DPPC in the presence of phospholipase A2 enzyme
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Long-term exposure to urban air pollution and the relationship with life expectancy in cohort of 3.5 million people in Silesia
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Comparison of the Properties of Vegetable Oil/Water and n-Tetradecane/Water Emulsions Stabilized by α-Lactalbumin or β-Casein
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Structure and wettability of heterogeneous monomolecular films of phospholipids with cholesterol or lauryl gallate
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The Numerical Comparison of Heat Transfer in a Coated and Fixed Bed of an Adsorption Chiller
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Operational analysis of threats to the security of NATO’s eastern flank. Context of hybrid activities
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Structural modification and band gap engineering of carbon nano-onions via sulphur doping: Theoretical DFT study
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Investigations of DPPC effect on Al2O3 particles in the presence of (phospho)lipases by the zeta potential and effective diameter measurements
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Health risks from consumption of medicinal plant dietary supplements
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Preliminary study of possible relationships between exposure to PCDD/Fs and dl-PCBs in ambient air and the length of life of people
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Differential Signals From TNFα-Treated and Untreated Embryos in Uterine Tissues and Splenic CD4+ T Lymphocytes During Preimplantation Pregnancy in Mice
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Molecular Response in Intestinal and Immune Tissues to in Ovo Administration of Inulin and the Combination of Inulin and Lactobacillus lactis Subsp. cremoris
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Fatty Acids Composition of Mustard Oil from Two Cultivars and Physico-chemical Characteristics of the Seeds
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Carbon Nanotubes Grown with Non-Ferromagnetic Catalysts in Alcohol CVD
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Influence of pregranulation and low-pressure compaction on the properties of ceramic materials incorporating clay and spent coffee grounds
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Investigating cellular location of aquaporins in the bovine kidney. A new view on renal physiology in cattle
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Photocatalytic performance of titania nanospheres deposited on graphene in coumarin oxidation reaction
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New approach to the chunk recoginition in Polish
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Low-temperature synthesis of zeolite from perlite waste — Part I: review of methods and phase compositions of resulting products
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Direct conversion of biomass to nanoporous activated biocarbons for high CO2 adsorption and supercapacitor applications
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Palladium nanoparticles deposited on graphene and its electrochemical performance for glucose sensing
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Low-temperature synthesis of zeolite from perlite waste — Part II: characteristics of the products
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Chemical and thermal stability of core-shelled magnetite nanoparticles and solid silica
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Hybrid carbon-TiO2 spheres: Investigation of structure, morphology and spectroscopic studies
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Characterization of carbon deposit with controlled carburization degree
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Insight into the influence of polymer topological structure on the exfoliation of clay in polystyrene matrix via annealing process
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Effect of graphene thickness on photocatalytic activity of TiO2-graphene nanocomposites
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Synthesis and characterization of iron-filled multi-walled nanotubes
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Aquaporins: New markers for male (in)fertility in livestock and poultry?
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Thermal and Electrical Characterization of the Carbon Nanofibers Based Cement Composites
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Oxidized SWCNT and MWCNT as co-catalysts of polymeric carbon nitride for photocatalytic hydrogen evolution
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