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Showing 1 to 20 of 138 for “"PHA"”.

  1. Biotechnologická produkce PHA z odpadních otrub

    Guziurová, PavlínaVysoké učení technické v Brně. Fakulta chemická

    … biotechnologickou produkcí polyhydroxyalkanoátů (PHA) z odpadních pšeničných otrub. Cílem bylo zjistit, zda hydrolyzát z pšeničných otrub podrobený různým typům předúpravy lze využít jako substrát pro produkci PHA pomocí vybraných bakteriálních kmenů. Vybrané kmeny byly Halomonas organivorans, …

    brno-tech Repository record

  2. Antibiotic-free PHA-based antibacterial materials for bone regeneration

    Marcello, E.University of Westminster2020

    … materials based on polyhydroxyalkanoates (PHAs) for bone regeneration following two strategies. For the first strategy, inherently antibacterial PHAs, thioester containing PHAs, were produced by bacterial fermentation. Such materials exhibited antibacterial activity by contact against S. …

    westminster Repository record

  3. Island Tourism and Sustainable Development in Thailand, Case Study of Koh Pha-Ngan

    Riengchantr, ALiverpool John Moores University2018

    … current tourism situation on the island of Koh Pha-ngan, Thailand. It categorises opportunities for, and constraints to, sustainable tourism development on the island, along with identifying the main variables of tourism sustainability relevant to island situations. Data from key stakeholders …

    liverpool-jm Repository record

  4. Conceptualising a 'living urban edge' for the Philippi Horticultural Area (PHA), Cape Town

    Chittenden, TessaSchool of Architecture, Planning and Geomatics2021

    The PHA is a large tract of productive farmlands embedded in the Cape Flats district of the City of Cape Town. The farmlands are essential for the City's food and water security, local livelihoods, biodiversity, heritage and access to green space for poor communities. Despite a long-standing policy …

    cape-town Repository record

  5. Conceptualising a 'living urban edge' for the Philippi Horticultural Area (PHA), Cape Town

    Chittenden, Tessa RoseSchool of Architecture, Planning and Geomatics2021

    The PHA is a large tract of productive farmlands embedded in the Cape Flats district of the City of Cape Town. The farmlands are essential for the City's food and water security, local livelihoods, biodiversity, heritage and access to green space for poor communities. Despite a long-standing policy …

    cape-town Repository record

  6. Producción de poli(hidroxialcanoato)s (PHA)s a partir de fuentes renovables de bajo costo

    Porras, Mauricio Ariel2016

    … de producción. Los poli(hidroxialcanoato)s (PHAs) son una familia de biopoliésteres de origen natural sintetizados por diversos microorganismos. Las características de los PHAs pueden dar lugar a diversas propiedades adaptables a diferentes aplicaciones industriales que van desde materiales …

    uns-ar Repository record

  7. Studies on the metabolism of polyhydroxyalkanoic acid and phosphate in the biological excess phosphate removal process

    Wu, ManhongUniversity of British Columbia1993

    … of my thesis were to examine the role of PHA in phosphate sequestering sludge metabolism and to test the effect of nutrient combinations on the intracellular level of PHA. The role of PHA in the process was studied by measuring levels of PHA in both functional and non-functional sewage …

    ubc Repository record

  8. The Utilization of Activated Sludge Polyhydroxyalkanoates for the Production of Biodegradable Plastics

    Punrattanasin, WarangkanaVirginia Tech2001

    … the high production of polyhydroxyalkanoates (PHAs) by wastewater treatment (activated sludge) bacterial cultures. It was found that unbalanced growth conditions stimulated massive PHA production in activated sludge biomass. Operating conditions had a significant effect on PHA production and …

    vt Repository record

  9. Charakterisierung der allergischen Immunantwort : Vergleich der in-vitro Zytokinproduktion isolierter mononukleärer Zellen und der in-vitro Zytokinproduktion aus Vollblutproben bei Neonaten und Erwachsenen

    Silberer, Jutta Bianca

    … des Neugeborenen nach Stimulation mit Mitogenen (PHA) und Allergenen (BLG) zu charakterisieren. Dabei wurde die in-vitro Zytokinproduktion aus Vollblutproben und von isolierten mononukleärer Zellen (MC) bei Neugeborenen (n= 25) und Erwachsenen (n= 25, davon 10 Allergiker) bestimmt, sowie die …

    freiburg-diss Repository record

  10. Improved Polyhydroxyalkanoate Production from Selected Volatile Fatty Acids using Cupriavidus necator

    Passanha, Pearl2014

    This study aimed to develop methods to improve PHA production from selected volatile fatty acids (VFAs) and to improve the understanding of the PHA production process by pure culture bacterial fermentation using Cupriavidus necator. Optimisation strategies involved the following investigations …

    southwales Repository record

  11. Production of polyhydroxyalkanoate copolymers from plant oil

    Budde, Charles ForresterMassachusetts Institute of Technology2010

    Polyhydroxyalkanoates (PHAs) are carbon storage polymers produced by a variety of bacteria. The model organism for studying PHA synthesis and accumulation is Ralstonia eutropha. This species can be used to convert renewable resources into PHA bioplastics, which can serve as biodegradable …

    mit Repository record

  12. Biosynthesis and characterisation of polyhydroxyalkanoate biopolymers and their oligomers for circular economy

    Ekere, AnabelUniversity of Wolverhampton2023

    Polyhydroxyalkanoates (PHAs) are biodegradable bioplastics that can potentially replace non-biodegradable petroleum-based plastics. However, the high production cost of PHAs which is associated with the high cost of starting substrate extraction solvents limits its integration into large scale …

    wlv Repository record

  13. Einfluss von Interleukin-18 auf das Th1/Th2-Zytokingleichgewicht mononukleärer Nabelschnurblutzellen in vitro

    Schaefer, Dörte

    … 200, oder 400 ng/ml), einem unspezifischen (PHA 20 µg/ml) und einem allergenspezifischen Stimulus (BLG 25 µg/ml) bei 37°C unter 5% CO2 durchgeführt. Die Konzentrationen der Zytokine IL-18, IL-13 und IFN-gamma im Zellüberstand wurden mittels ELISA quantifiziert. <br>Bei der in …

    freiburg-diss Repository record

  14. Phenotypic Analysis and Localization of Leukocytes at the Site of Intradermal Injection of Phytohemagglutinin in Chickens

    Sullivan, Kallie Alyce2017

    <p>Phytohemagglutinin (PHA) is commonly used to gain insight into an individual’s cellular immuno-competence. PHA is typically injected intradermally (i.d.) into the skin (e.g. wing web) and the tissue swelling response is then monitored, whereby the extent of the swelling positively relates to the …

    arkansas Repository record

  15. Production of Polyhydroxyalkanoates and their application for coronary stent development

    Lukasiewicz, B.University of Westminster2017

    … group of biomaterials Polyhydroxyalkanoates (PHAs), which are biopolyesters produced by bacteria, have a great potential in coronary stent development. They are biodegradable, non-toxic and biocompatible. PHAs have a broad range of properties, which can be tailored based on the requirements of …

    westminster Repository record

  16. Bioplastics from C1 Gases - Substitute Sustainable Products for Polymer Coated Steel

    Catherine, Marie-Claire2023

    … of biopolymers called polyhydroxyalkanoates (PHA). With acetate as the sole carbon source and by varying several culture conditions (substrate concentration, temperature, pH, nutrient concentration), different mixes of PHA were obtained. Further experiments were conducted to determine the best …

    southwales Repository record

  17. Systematic investigation of potential factors that affect the production costs of the bio-based and bio-degradable plastic polyhydroxyalkanoates (PHAs) by a costing analysis based on early process simulation

    Rumjeet, ShilpaCentre for Bioprocess Engineering Research2016

    … bio-degradable plastics, polyhydroyalkanoates (PHAs) as promising alternatives to petroleum plastics. PHAs are biologically synthesised polyesters which accumulate intracellularly in the presence of excess carbon from renewable resources and, limited nutrients in the form of nitrogen, phosphorus …

    cape-town Repository record

  18. Living on the land: redesigning land use relationships in the Philippi Horticultural Area

    Asmal, SaudahSchool of Architecture, Planning and Geomatics2016

    … the mid-1800's the Philippi Horticultural Area (PHA) has been of agricultural significance to Cape Town, producing food for the city. The Area also forms part of the remnant floodplain, and is essential in maintaining the recharge of the Cape Flats Aquifer, an important water source for Cape …

    cape-town Repository record

  19. Alcator C-Mod soft X-ray pulse height analysis system

    Gamboa, Eliseo (Eliseo J.)Massachusetts Institute of Technology2007

    A pulse height analysis (PHA) system has been installed on the Alcator C-Mod magnetic confinement fusion experiment. The PHA utilizes a Si(Li) detector to measure soft X-rays in the 1-30 keV range with an energy resolution on the order of 100eV. A FASTComtec MCA-3 multichannel analyzer allows …

    mit Repository record

  20. Produkce polyhydroxyalkanoátů z vybraných odpadních substrátů

    Vlasáková, TeréziaVysoké učení technické v Brně. Fakulta chemická

    … na štúdium produkcie polyhydroxyalkanoátov (PHA) baktériami Burkholderia sacchari a Burkholderia cepacia a taktiež faktorov, ktoré produkciu ovplyvňujú. Hlavnou skúmanou oblasťou bola produkcia PHA na substráte z kukuričnej siláže. V teoretickej časti bola podaná stručná charakteristika PHA, …

    brno-tech Repository record

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