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Abstract: The role of NIMBY (“Not in My Backyard”) phenomena in sustainable urban development and tourism was analyzed, with a focus on stakeholder dynamics and implications for spatial planning. Based on an analysis of worldwide case studies, the main barriers and opportunities presented by these phenomena were identified, including the impact of project preparation time (tp) and benefit realization time (tb ). A mixed methods approach was used, combining qualitative analysis of case studies with quantitative evaluation of project timelines. The results show that effective stakeholder engagement significantly reduces tp, while maximizing tb increases long-term benefits for communities and the environment. This research emphasizes the systemic interdependence of urban planning, environmental sustainability, tourism, and cultural heritage preservation, offering actionable insights for policymakers and developers. The conclusions emphasize the importance of participatory approaches to ensure equitable and sustainable urban transformation.
Keywords: NIMBY, spatial planning, sustainable urban development, sustainable tourism, maintenance, cultural heritage, tourism impact, project preparation, (negative) indirect benefit
Published in DKUM: 02.04.2025; Views: 0; Downloads: 2
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Abstract: The fabrication of nanocellulose-based substrates with high dielectric permittivity and anisotropic thermal conductivity to replace synthetic thermoplastics in flexible organic electronics remains a big challenge. Herein, films were prepared from native (CNF) and carboxylated (TCNF) cellulose nanofibrils, with and without the addition of thermally conductive multi-layered Ti3C2Tx MXene, to examine the impact of polar (− OH, − COOH) surface groups on the film morphological, moisturizing, dielectric, and thermal dissipation properties. The electrostatic repulsion and hydrogen bonding interaction between the hydrophilic surface/terminal groups on CNF/TCNF and MXene was shown to render their self-assembly distribution and organization into morphologically differently structured films, and, consequently, different properties. The pristine CNF film achieved high intrinsic dielectric permittivity (ε' ~ 9), which was further increased to almost ε' ~ 14 by increasing (50 wt%) the MXene content. The well-packed and aligned structure of thinner TCNF films enables the tuning of both the composite’s dielectric permittivity (ε' ~ 6) and through-plane thermal conductivity (K ~ 2.9 W/mK), which increased strongly (ε' ~ 17) at higher MXene loading giving in-plane thermal conductivity of ~ 6.3 W/mK. The air-absorbed moisture ability of the films contributes to heat dissipation by releasing it. The dielectric losses remained below 0.1 in all the composite films, showing their potential for application in electronics.
Keywords: nanofibrillated cellulose, Ti3C2T, Mxene, film preparation, moisture content, thermal conductivity
Published in DKUM: 03.09.2024; Views: 36; Downloads: 16
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Keywords: optical sensor layers preparation, spin coating, spray coating, inkjet printing, SFE, XPS, NH3, response, real-time response
Published in DKUM: 28.03.2024; Views: 198; Downloads: 14
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Abstract: The preparation and usability of a sulphide ion selective electrode, prepared by means of chemical pretreatment of silver wire with an ammonium perdisulphate solution, and the sulphidization in an alkaline sulphide solution are described. The electrode is suitable for direct potentiometric measuring of sulphide in alkaline solutions of concentrations down to ▫$1 X 10^{-6} mol/L$▫. The 45 min required for each chemical treatment are enough for the preparation of the described electrode.
Keywords: analytical chemistry, ion selective electrode, preparation, silver wire, potentiometric measurements, sulphide ions
Published in DKUM: 17.08.2017; Views: 1403; Downloads: 128
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Abstract: Poly(glycidyl methacrylate-co-ethyleneglycol dimethacrylate) monolithic supports were prepared by radical polymerisation of the continuous phase of water in oil high internal phase emulsions. Morphology of monolithic materialswas studied by scanning electron microscopy and mercury intrusion porosimetry. The ratio of phase volume and the degree of crosslinking influenced the void size and pore size distribution of resulting polymers. Void sizes between 1 and 10 m were observed and average pore sizes around 100nm. Polymers with 60, 75, 80 and 90% pore volume were prepared and even samples with highest pore volume showed good mechanical stability. They were modified to bear weak-anion exchange groups and tested on the separation of standard protein mixture containing myoglobin, conalbumine and trypsin inhibitor. Good separation was obtained in a very short time similar to the separation obtained by commercial methacrylate monoliths. However, higher dispersion was observed. Bovine serum albumin dynamic binding capacity for monolith with 90% porosity was close to 9 mg/ml.
Keywords: organic chemistry, methacrylate monoliths, preparation, emulsion polymerization, high porosity, high mechanical stability, polymer chromatographic supports, monolithic methacrylate supports, protein separation
Published in DKUM: 01.06.2012; Views: 2570; Downloads: 67
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