Battery energy storage (BES) can provide many grid services, such as power flow management to reduce distribution grid overloading. It is desirable to minimise BES storage capacities to reduce investment costs. However, it is not always clear how battery sizing is affected by battery siting and power flow simultaneity (PFS). This paper describes a method to compare the battery capacity required to provide grid services for different battery siting configurations and variable PFSs. The method was implemented by modelling a standard test grid with artificial power flow patterns and different battery siting configurations. The storage capacity of each configuration was minimised to determine how these variables affect the minimum storage capacity required to maintain power flows below a given threshold. In this case, a battery located at the transformer required 10–20% more capacity than a battery located centrally on the grid, or several batteries distributed throughout the grid, depending on PFS. The differences in capacity requirements were largely attributed to the ability of a BES configuration to mitigate network losses. The method presented in this paper can be used to compare BES capacity requirements for different battery siting configurations, power flow patterns, grid services, and grid characteristics.
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Background: Experiencing flow, an optimal psychological state, can support health and well-being. A developmental perspective on flow so far examines strategies to facilitate these experiences in the face of developmental losses such as ageing. People with disabilities experience restrictions in participation and thus fewer occupations that potentially induce flow. Therefore, contributions to this perspective can be gained from disabled people’s experiences. Thus, this meta-study synthesises qualitative research literature to determine the contribution to a developmental perspective on flow in people with disabilities. Methods: Following a systematic search of four databases (PsycInfo (EBSCO), PubMed, CINAHL (EBSCO), Scopus) 10 qualitative, peer-reviewed studies were included, and critically appraised. Findings as well as methodologies, and underlying theories were analysed and synthesised. Findings: Various methodologies have been used to explore flow experiences of people with disabilities. Incongruencies between underlying theories and chosen methods, as well as lack of researcher reflexivity impacted the trustworthiness of some studies. All studies originated within occupational therapy research and were located in the global North, implying assumptions about occupation and well-being and a rehabilitation framework. The individuals’ choice and control, and adaptations of environment and occupation emerged from the meta-synthesis as important factors to experiencing flow. Conclusion: To enhance opportunities for flow in the lives of people with disabilities, a shift of perspective from individual impairments towards issues of accessibility and occupational justice is needed. Based on this meta-study, critical disability theory and participatory frameworks are recommended for future research to explore strategies to enhance access to flow inducing occupations.
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This work reports the fabrication of a titanium carbide nanoparticle-based inkjet printed flexible bidirectional flow sensor. The design of the flow sensor consists of an inkjet printed titanium carbide piezoresistive strain gauge on a polyester cantilever. The sensors demonstrated a normalized flow sensitivity of 1.043/(ms-1) in the velocity range 0.15 - 0.55 m/s (for water flow). The fabrication method reported in this work potentially opens a new direction for fabrication of a class of robust, repeatable, and inexpensive flexible flow sensors.
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Hoe kan zorgvernieuwing structureel en efficiënt gerealiseerd worden door inzet van 3D-technieken en welke praktische medische vraagstukken worden hiermee opgelost? Dat was een vraag die voortkwam uit experimenten van MST (afdeling Radiotherapie) voor het KIEM-project ‘Zorgvernieuwing door de inzet van 3D’. Hierin is onderzoek gedaan naar state-of-the-art 3D-technieken in de zorg. Op basis hiervan is een roadmap ontwikkeld waarin de kansen voor MST zijn samengevat. Dit heeft MST-intern geleid tot intensieve discussies over de vraag HOE deze 3D-technieken gerealiseerd kunnen worden in de huidige workflow. Uit de roadmap is een selectie gemaakt waar 3D-technieken een duidelijke meerwaarde kunnen bieden, als deze goed geïntegreerd kunnen worden met de ontwikkelende workflow binnen het in het KIEM-project opgezette Medisch-3D-Printlab bij het MST. De uitdaging is enerzijds om 3D-printen succesvol te introduceren en implementeren in de bestaande workflow van verschillende afdelingen in het ziekenhuis, waardoor innovatie in de zorg plaatsvindt en de kwaliteit van deze zorg verbeterd kan worden. Anderzijds een volgende stap in de mogelijkheden van 3Dprinten te verkennen: combinatie harde-zachte materialen. Het MST, Saxion Lectoraat Industrial Design en FabLab Enschede slaan de handen ineen, samen de met nieuwe partners uit de regio Siemonsma Tandtechniek en LAYaLAY om 3D-technieken daadwerkelijk te implementeren binnen de complexe wereld van het ziekenhuis. Doel van dit project is drieledig: 1) Implementatie van nieuwe 3D-technieken uit de roadmap en deze te optimaliseren aan de hand van praktijkcasussen. 2) Het verkennen van kansen binnen verschillende medische disciplines alsmede nieuwe 3Dscan/ printtechnieken (combinatie van harde-zachte materialen). 3) Het bijeenbrengen van nieuwe kennispartners en andere specialismen om dit thema grootschalig uit te werken in een vervolgproject.
National forestry Commission (SBB) and National Park De Biesbosch. Subcontractor through NRITNational parks with large flows of visitors have to manage these flows carefully. Methods of data collection and analysis can be of help to support decision making. The case of the Biesbosch National Park is used to find innovative ways to figure flows of yachts, being the most important component of water traffic, and to create a model that allows the estimation of changes in yachting patterns resulting from policy measures. Recent policies oriented at building additional waterways, nature development areas and recreational concentrations in the park to manage the demands of recreation and nature conservation offer a good opportunity to apply this model. With a geographical information system (GIS), data obtained from aerial photographs and satellite images can be analyzed. The method of space syntax is used to determine and visualize characteristics of the network of leisure routes in the park and to evaluate impacts resulting from expected changes in the network that accompany the restructuring of waterways.
Chemical preservation is an important process that prevents foods, personal care products, woods and household products, such as paints and coatings, from undesirable change or decomposition by microbial growth. To date, many different chemical preservatives are commercially available, but they are also associated with health threats and severe negative environmental impact. The demand for novel, safe, and green chemical preservatives is growing, and this process is further accelerated by the European Green Deal. It is expected that by the year of 2050 (or even as soon as 2035), all preservatives that do not meet the ‘safe-by-design’ and ‘biodegradability’ criteria are banned from production and use. To meet these European goals, there is a large need for the development of green, circular, and bio-degradable antimicrobial compounds that can serve as alternatives for the currently available biocidals/ preservatives. Anthocyanins, derived from fruits and flowers, meet these sustainability goals. Furthermore, preliminary research at the Hanze University of Applied Science has confirmed the antimicrobial efficacy of rose and tulip anthocyanin extracts against an array of microbial species. Therefore, these molecules have the potential to serve as novel, sustainable chemical preservatives. In the current project we develop a strategy consisting of fractionation and state-of-the-art characterization methods of individual anthocyanins and subsequent in vitro screening to identify anthocyanin-molecules with potent antimicrobial efficacy for application in paints, coatings and other products. To our knowledge this is the first attempt that combines in-depth chemical characterization of individual anthocyanins in relation to their antimicrobial efficacy. Once developed, this strategy will allow us to single out anthocyanin molecules with antimicrobial properties and give us insight in structure-activity relations of individual anthocyanins. Our approach is the first step towards the development of anthocyanin molecules as novel, circular and biodegradable non-toxic plant-based preservatives.
