Recent additions

  • Role and Important Properties of a Membrane with Its Recent Advancement in a Microbial Fuel Cell 

    Banerjee, Aritro; Calay, Rajnish Kaur; Eregno, Fasil Ejigu (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-09)
    Microbial fuel cells (MFC) are an emerging technology for wastewater treatment that utilizes the metabolism of microorganisms to generate electricity from the organic matter present in water directly. The principle of MFC is the same as hydrogen fuel cell and has three main components (i.e., anode, cathode, and proton exchange membrane). The membrane separates the anode and cathode chambers and ...
  • Residential Construction Sustainability in the UK and Prospects of Knowledge Transfer to Kazakhstan 

    Calay, Rajnish K; Tokbolat, Serik (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-10-22)
    This paper aimed to investigate the up-to-date levels of sustainability in the UK construction with special interest to sustainable housing. It also aims to examine the justification behind construction and housing sustainability, and to look at the practicality of transferring current expertise within the UK as well as to an emerging Central Asian country such as Kazakhstan. A synergy of case ...
  • The Volcanic Hazards of Jan Mayen Island (North-Atlantic) 

    Gjerløw, Eirik; Höskuldsson, Ármann; Bartolini, Stefania; Biass, Sebastien; Mossoux, Sophie; Gilbert, Jennie S.; Pedersen, Rolf Birger Svarstad; Marti, Joan (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-04)
    Hazard assessment of remote volcanic islands provides many challenges compared to other volcanoes and volcanic fields. Here we present the first systematic volcanic hazard assessment of Jan Mayen Island, a remote island located in the North-Atlantic Ocean and home to the northernmost active subaerial volcano in the world (Beerenberg Volcano), and we discuss some of the challenges and characteristics ...
  • Integration of Renewable Energy Technologies in University Campuses: a Case Study 

    Mustafa, Mohamad; Tokbolat, Serik; Almahadin, Aziz; Khussainova, Diana; Nazipov, Farnush (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-10)
    Renewable energy technologies are becoming widely integrated into energy generation systems around the world. While the majority of such technologies are integrated at a large scale in the form of wind and solar farms, there is a need for their incorporation into the built environment. A university campus is an ideal place for testing and understanding how renewable energy technologies can be ...
  • Utvikling av digitale læringsressurser for forkurs for ingeniørutdanning på tvers av studiesteder 

    Esjeholm, Bjørn Tore; Fredriksen, Helge (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-25)
    Fra høsten 2019 har forkursene for ingeniørutdanning ved UiT -Norges arktiske universitet deltatt i prosjektet «Sammen 2021» der målet er å bedre gjennomstrømmingen og øke rekrutteringen til ingeniørstudiene gjennom å forbedre studieopplegget og læ ringsprosessene i alle fagene på forkursene. Forkurs/realfagskurs tilbys i dag ved studiestedene Alta, Tromsø, Narvik og ...
  • Investigation of the impacts of design parameters on thermal performance of buildings in cold climate 

    Mustafa, Mohamad; Zhong, Hua; Gaitov, Rashid (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-29)
    While design optimization of buildings seeks to improve energy efficiency and, thus, leads to greenhouse gas emissions reduction, the thermal performance of buildings can be compromised. Thermal performance is an important aspect as it directly affects the health and wellbeing of occupants. This study aims to investigate using a simple simulation tool to examine the correlation between a set of ...
  • Simplified Thermal Performance Evaluation of a PCM-Filled Triple-Glazed Window under Arctic Climate Conditions 

    Riise, Raymond; Calay, Rajnish Kaur; Ravasio, Lucrezia (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-02)
    This paper evaluates the thermal performance of a triple-glazed glass window filled with a phase-change material (PCM) compared to the performance of a traditional triple-glazed window with air gaps. The chosen PCM was paraffin wax. A mathematical model to simulate heat transfer within the system was presented. A commercially available software, COMSOL Multiphysics, was used to numerically solve the ...
  • Simplified Thermal Performance Evaluation of a PCM-Filled Triple-Glazed Window under Arctic Climate Conditions 

    Riise, Raymond; Calay, Rajnish K; Ravasio, Lucrezia (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-02)
    This paper evaluates the thermal performance of a triple-glazed glass window filled with a phase-change material (PCM) compared to the performance of a traditional triple-glazed window with air gaps. The chosen PCM was paraffin wax. A mathematical model to simulate heat transfer within the system was presented. A commercially available software, COMSOL Multiphysics, was used to numerically solve ...
  • Soil Moisture Variations in Frozen Ground Subjected to Hydronic Heating 

    Sveen, Svein Erik; Nguyen, Hung Thanh; Sørensen, Bjørn Reidar (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-10)
    Full-scale thawing experiments, performed on three types of homogenous, initially frozen soils, were carried out during late winter 2011 and repeated in 2012. An auxiliary heat source (hydronic heating) was employed to initiate and expedite the thawing process. The corresponding phase change, soil temperature increase, and variations in bound and unbound water content were monitored during the ...
  • Circular economy: Challenges and opportunities in the construction sector of Kazakhstan 

    Torgautov, Beibut; Zhanabayev, Asset; Tleuken, Aidana; Turkyilmaz, Ali; Mustafa, Mohammad; Karaca, Ferhat (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-24)
    The circular economy in the construction sector in emerging economies is one of the most promising concepts that aims to keep the value of the construction materials and structures as long as possible. The construction industry is rapidly developing in Kazakhstan with a yearly increase in projects. This research paper investigates the construction sector in Kazakhstan in terms of the potential ...
  • Use of digital technology to follow the consequences of a warming Arctic climate 

    Myrmel, Liv Brita Hætta; Gudmestad, Ove Tobias (Journal article; Tidsskriftartikkel; Peer reviewed, 2021)
    The rapid warming climate is causing the Arctic ice to retreat and the permafrost to melt. These visible manifestations of the ongoing climate change are few of many environmental and societal changes that take place in the Arctic. The acceleration of digitalization and implementation of digital technology bring new opportunities to follow the consequences of the warmer arctic climate, but also ...
  • On crystallographic aspects of heterogeneous plastic flow during ductile tearing: 3D measurements and crystal plasticity simulations for AA7075-T651 

    Morgeneyer, Thilo; Khadyko, Mikhail; Buljac, A; Helfen, Lukas; Hild, Francois; Benallal, Ahmed; Børvik, Tore; Hopperstad, Odd Sture (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-21)
    Crystallographic aspects of heterogeneous plastic flow during ductile tearing are assessed experimentally by combining in situ synchrotron laminography imaging of notched flat samples with a full-field measurement technique and numerical simulations with the crystal plasticity finite element method (CP-FEM). Advantage is taken of the plane strain condition in the region ahead of the notch root (i.e., ...
  • A Comprehensive Summary of Available Legislation and Practices in Demolition and Construction & Demolition Waste Management in the Arctic Region 

    Novakova, Iveta; Drozdyuk, Tatiana; Ohenoja, Katja; Ayzenshtadt, Arcady; Arntsen, Bård; Perumal, Priyadharshini; Dyvesveen, Martin Skjerve (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-17)
    The need for better natural resource use is currently increasingly recognised, and high emphasis is given to the circularity of building materials and the reduction of activities with negative environmental impact. Legislation, guidelines, and other documentation play an important role in improving demolition activities and construction and demolition waste (CDW) management. Good practices in CDW ...
  • Hvordan kommuniserer lærere med elevene i teknologiprosjekter? 

    Lysne, Dag Atle; Esjeholm, Bjørn Tore (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-14)
    Inquiry-based methods have been seen as important for developing science in school. There are good reasons why the work of designing various technological devices in technology should also be part of inquiry-based methods. If so, it requires that the teachers have an exploratory approach in communicat-ing with students. In this paper, we analyze the communication between teachers and students in six ...
  • Finite element simulation of ductile fracture in polycrystalline materials using a regularized porous crystal plasticity model 

    Khadyko, Mikhail; Frodal, Bjørn Håkon; Hopperstad, Odd Sture (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-18)
    In the present study, a hypoelastic–plastic formulation of porous crystal plasticity with a regularized version of Schmid’s law is proposed. The equation describing the effect of the voids on plasticity is modified to allow for an explicit analytical solution for the effective resolved shear stress. The regularized porous crystal plasticity model is implemented as a material model in a finite element ...
  • Poly[2,2′-(4,4′-bipyridine)-5,5′-bibenzimidazole] functionalization of carbon black for improving the oxidation stability and oxygen reduction reaction of fuel cells 

    Berber, Mohamed R.; Mustafa, Mohamad Y. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-20)
    The rapid oxidation of carbon black (CB) is a major drawback for its use as a catalyst support in polymer electrolyte fuel cells. Here, we synthesize poly[2,20 -(4,40 -bipyridine)-5,50 -bibenzimidazole] (BiPyPBI) as a conducting polymer and use it to functionalize the surface of CB and homogenously anchor platinum metal nanoparticles (Pt-NPs) on a CB surface. The as-prepared materials were ...
  • Modelling Multi-layer Hydronic Radiators 

    Chen, Liguo; Sørensen, Bjørn Reidar (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-30)
    This report simulates Purmo type C22 and C33 radiators with both standard calculation and heat transfer method with help of Matlab/Simulink. Simulation results are presented to describe the radiators’ thermal performances with different simulation strategies. The deviations between two different calculation methods are identified and the heat transfer radiator model can be improved with more ...
  • Green Building in the Arctic Region: State-of-the-Art and Future Research Opportunities 

    Ravasio, Lucrezia; Sveen, Svein-Erik; Riise, Raymond (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-10)
    The concept of Green Building refers to environmentally friendly constructions with the target of minimizing the impact on the natural environment through sustainable and efficient use of resources over their life cycle. Since modern buildings are large contributors to global energy consumption and greenhouse gas emissions, policies and international strategies intended to reduce the carbon footprint ...
  • Green Buildings in the Arctic region: a literature review 

    Ravasio, Lucrezia; Riise, Raymond; Sveen, Svein-Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-30)
    Green Buildings are defined as environmental-friendly buildings aimed at minimizing the impact on the natural environment through a sustainable and efficient use of resources over their life-cycle. This is, perhaps, a recently-introduced building concept that is increasingly gaining attention due to the policies and strategies intended to reduce the carbon footprint of conventional buildings, which ...
  • Ship resistance analysis using CFD simulations in Flow-3D 

    Deshpande, Sujay; Sundsbø, Per-Arne; Das, Subhashis (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-19)
    While designing the power requirements of a ship, the most important factor to be considered is the ship resistance, or the sea drag forces acting on the ship. It is important to have an estimate of the ship resistance while designing the propulsion system since the power required to overcome the sea drag forces contribute to ‘losses’ in the propulsion system. There are three main methods to calculate ...

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