Browsing by Author "Ackermann Michal"
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- ItemAnalysis and evaluation of the 3D printing materials which are applicable for production of parts with high geometric precision(2015) Šafka Jiří; Ackermann Michal; Lachman Martin
- ItemAnalysis of manufacturing accuracy of 3D printers for dental applications(2017) Šafka Jiří; Mendřický Radomír; Ackermann Michal
- ItemAnalysis of small diameter vascular grafts made from biodegradable polyesters(2015) Horáková Jana; Novák Patrik; Klápšťová Andrea; Pavlíková Tereza; Šaman Aleš; Ackermann Michal; Mikeš Petr
- ItemCeramic 3d printing: Comparison of SLA and DLP technologies(MM Science Journal, 2020) Šafka Jiří; Seidl Martin; Kovalenko Iaroslav; Voleský Lukáš; Ackermann Michal; Truxová Veronika
- ItemCHEMICAL RESISTANCE OF MATERIALS USED IN ADDITIVE MANUFACTURING(MM publishing Ltd., 2016) Šafka Jiří; Ackermann Michal; Martiš David
- ItemComparison of electrospun fibrous materials made from polycaprolactone (pcl) and polylactide-polycaprolactone copolymer (plc) for small diameter blood vessel tissue engineering(2015) Klápšťová Andrea; Šaman Aleš; Jenčová Věra; Horáková Jana; Blažková Lenka; Mikeš Petr; Ackermann Michal
- ItemDevelopment of the Structure of Cemented Carbides during Their Processing by SLM and HIP(MDPI AG, 2020) Bricín David; Ackermann Michal; Jansa Zdeněk; Kubátová Dana; Kříž Antonín; Špirit Zbyněk; Šafka Jiří
- ItemDevice for chemical modification of tubular samples(2017) Ackermann Michal; Lukášek Jan; Zajícová Veronika; Lukáš David; Horáková Jana; Mikeš Petr; Jenčová Věra; Klápšťová Andrea; Jirkovec Radek
- ItemThe effect of ethylene oxide sterilization on electrospun vascular grafts made from biodegradable polyesters(ELSEVIER SCIENCE BV, 2018) Horáková Jana; Mikeš Petr; Šaman Aleš; Jenčová Věra; Klápšťová Andrea; Švarcová Tereza; Ackermann Michal; Novotný Vít; Suchý Tomáš; Lukáš DavidThe study describes the detailed examination of the effect of ethylene oxide sterilization on electrospun scaffolds constructed from biodegradable polyesters. Different fibrous layers fabricated from polycaprolactone (PCL) and a copolymer consisting of polylactide and polycaprolactone (PLCL) were investigated for the determination of their mechanical properties, degradation rates and interaction with fibroblasts. It was discovered that the sterilization procedure influenced the mechanical properties of the electrospun PLCL copolymer scaffold to the greatest extent. No effect of ethylene oxide sterilization on degradation behavior was observed. However, a delayed fibroblast proliferation rate was noticed with concern to the ethylene oxide sterilized samples compared to the ethanol sterilization of the materials.
- ItemElectrospun Polylactide-Polycaprolactone Copolymer for Vascular Tissue Engineering(Scientific Publishing House Akapit, 2015) Horáková Jana; Mikeš Petr; Šaman Aleš; Ackermann Michal
- ItemElectrospun vascular grafts fabricated from poly(L-lactide-co-epsilon-caprolactone) used as a bypass for the rabbit carotid artery(IOP Publishing, 2018) Horáková Jana; Mikeš Petr; Lukáš David; Šaman Aleš; Jenčová Věra; Klápšťová Andrea; Švarcová Tereza; Ackermann Michal; Novotný Vít; Kaláb Martin; Lonský Vladimír; Bartoš Martin; Rampichova Michala; Litvinec Andrej; Kubíková Tereza; Tomášek Petr; Tonar ZbyněkThe study involved the electrospinning of the copolymer poly(L-lactide-co-ε-caprolactone) (PLCL) into tubular grafts. The subsequent material characterization, including micro-computed tomography analysis, revealed a level of porosity of around 70%, with pore sizes of 9.34 ± 0.19 μm and fiber diameters of 5.58 ± 0.10 μm. Unlike fibrous polycaprolactone, the electrospun PLCL copolymer promoted fibroblast and endothelial cell adhesion and proliferation in vitro. Moreover, the regeneration of the vessel wall was detected following implantation and, after six months, the endothelialization of the lumen and the infiltration of arranged smooth muscle cells producing collagen was observed. However, the degradation rate was found to be accelerated in the rabbit animal model. The study was conducted under conditions that reflected the clinical requirements—the prostheses were sutured in the end-to-side fashion and the long-term end point of prosthesis healing was assessed. The regeneration of the vessel wall in terms of endothelialization, smooth cell infiltration and the presence of collagen fibers was observed after six months in vivo. A part of the grafts failed due to the rapid degradation rate of the PLCL copolymer.
- ItemEquipment for the production of tubular scaffolds by the methods of needleless electrospinningnning(2020) Klápšťová Andrea; Harciníková Petra; Ackermann Michal
- ItemEvaluation of the impact of production parameters on the final properties of the part made of nylon 12 with rapid prototyping technology (FDM(MM Publishing, 2016) Šafka Jiří; Ackermann Michal; Seidl Martin; Běhálek Luboš; Bobek Jiří; Klunejko Jakub
- ItemFabrication Process And Basic Material Properties of the Basf Ultrafuse 316lx Material(MM publishing Ltd., 2020) Šafka Jiří; Ackermann Michal; Macháček Jakub; Seidl Martin; Véle Filip; Truxová Veronika
- ItemHeparinization of vascular grafts(ČVUT, 2018) Horáková Jana; Klápšťová Andrea; Lukášek Jan; Máková Veronika; Jirkovec Radek; Ackermann Michal; Jenčová Věra; Mikeš Petr; Lukáš DavidNaše pracoviště se dlouhodobě zabývá vývojem maloprůměrových cévních náhrad. K výrobě těchto materiálů se využívá technologie jehlového elektrostatického zvlákňování s využitím biodegradabilních polyesterů. Tyto tubulární grafty splňují požadavky na cévní náhrady z hlediska morfologie vláken a mechanických vlastností. Jejich nedostatkem však je vysoká trombogenicita. Tento problém jsme se snažili překonat heparinizací nanovlákenných materiálů, která by měla zabránit vzniku krevních sraženin.
- ItemHow does the surface treatment change the cytocompatibility of implants made by Selective Laser Melting?(Taylor & Francis, 2018) Ackermann Michal; Horáková Jana; Čapek Lukáš; Henyš Petr; Šafka Jiří; Matoušková LucieIntroduction: The study investigates the potential for producing medical components via Selective Laser Melting technology (SLM). The material tested consisted of the biocompatible titanium alloy Ti6Al4V. The research involved the testing of laboratory specimens produced using SLM technology both in vitro and for surface roughness. The aim of the research was to clarify whether SLM technology affects the cytocompatibility of implants and, thus, whether SLM implants provide suitable candidates for medical use following zero or minimum post-fabrication treatment. Areas covered: The specimens were tested with an osteoblast cell line and, subsequently, two post-treatment processes were compared: non-treated (as-fabricated) and glass-blasted. Interactions with MG-63 cells were evaluated by means of metabolic MTT assay and microscope techniques (scanning electron microscopy, fluorescence microscopy). Surface roughness was observed on both the non-treated and glass-blasted SLM specimens. Expert Commentary: The research concluded that the glass-blasting of SLM Ti6Al4V significantly reduces surface roughness. The arithmetic mean roughness Ra was calculated at 3.4 µm for the glass-blasted and 13.3 µm for the non-treated surfaces. However, the results of in vitro testing revealed that the non-treated surface was better suited to cell growth.
- ItemImpact testing of H13 tool steel processed with use of selective laser melting technology(Trans Tech Publications Ltd., 2018) Ackermann Michal; Šafka Jiří; Voleský Lukáš; Bobek Jiří; Kondapally Jitendra Reddy
- ItemInfluence of Selective Laser Melting Technology Process Parameters on Porosity and Hardness of AISI H13 Tool Steel: Statistical Approach(MDPI, 2021) Véle Filip; Ackermann Michal; Bittner Václav; Šafka Jiří
- ItemMechanical properties of polypropylene: Additive manufacturing by multi jet fusion technology(MDPI AG, 2021) Šafka Jiří; Ackermann Michal; Véle Filip; Macháček Jakub; Henyš Petr
- ItemMechanical Properties of Two Types of Lattice Structures Fabricated with the Use of Hp Multijet Fusion Technology(MM publishing Ltd., 2020) Šafka Jiří; Ackermann Michal; Seidl Martin; Véle Filip; Macháček Jakub; Běhálek Luboš; Henys P.; Rocha Jacqueline Pereira; Truxová Veronika
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