Browsing AURA by Author "Akhtar, Naureen"
Now showing items 1-18 of 18
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Characterization and Evaluation of Hydrothermal Liquefaction Char from Alkali Lignin in Subcritical Temperatures
Jayathilake, Madhawa; Rudra, Souman; Akhtar, Naureen; Christy, Alfred Antony (Peer reviewed; Journal article, 2021) -
Characterization and treatment of tunneling wastewater using natural and chemical coagulants
Ghorbani Mooselu, Mehrdad; Liltved, Helge; Akhtar, Naureen (Peer reviewed; Journal article, 2023)Particles are a concern regarding tunneling wastewater, but gaps remain in understanding metal(loid)s content and coagulation efficiency. In this research, characterization of the wastewaters before and after treatment was ... -
Data-driven green energy extraction: Machine learning-based MPPT control with efficient fault detection method for the hybrid PV-TEG system
Khan, Kamran; Rashid, Saad; Mansoor, Majad; Khan, Ammar; Raza, Hasan; Zafar, Muhammad Hamza; Akhtar, Naureen (Peer reviewed; Journal article, 2023)The hybrid photovoltaic-thermoelectric generation system (PVTEG) gives two-fold benefits; firstly, it efficiently utilizes the available solar energy as it converts both solar irradiance and solar thermal energy into ... -
Defects and fault modes of field-aged photovoltaic modules in the Nordics
Segbefia, Oscar Kwame; Akhtar, Naureen; Sætre, Tor Oskar (Peer reviewed; Journal article, 2023)PV module durability and reliability influences its efficiency and return on investment. Hence, collection of ample and credible PV module reliability data in each climatic zone becomes increasingly essential. In this work, ... -
The effect of Mo and Ge reactive elements on high-temperature oxidation of higher manganese silicide
de Padoue Shyikira, Antoine; Akhtar, Naureen; Skomedal, Gunstein; Middleton, Peter Hugh (Journal article; Peer reviewed, 2021)Higher manganese silicide (HMS) alloys (Mnx-αMoαSiy-βGeβ (x = 0.99–1.011, α = 0.005–0.02, y = 1.75, β = 0.005–0.01)) were studied to elucidate the effect of Mo and Ge pertaining to oxidation. Oxidation experiments were ... -
Evaluating the effect of mineralogy and mechanical stability of recycled excavation materials by Los Angeles and micro-Deval test
Adomako, Solomon; Thorstensen, Rein Terje; Akhtar, Naureen; Norby, Mariann; Engelsen, Christian John; Danner, Tobias; Barbieri, Diego Maria (Chapter, 2021) -
Experimental investigation of effect of printing direction and surface roughness on the mechanical properties of AlSi10Mg-alloy produced by selective laser melting
Vysochinskiy, Dmitry; Akhtar, Naureen; Nordmo, Tord; Strand, Mathias Rabjerg; Vyssios, Adrian; Bak, Morten Kollerup (Journal article, 2021)The additive manufacturing has initially gained popularity for production of non-loadbearing parts and components or in the fields where the material strength and ductility are less important such as modelling and rapid ... -
Federated learning and non-federated learning based power forecasting of photovoltaic/wind power energy systems: A systematic review
El Robrini, Feria; Bukhari, Syed Muhammad Salman; Zafar, Muhammad Hamza; Al-Tawalbeh, Nedaa; Akhtar, Naureen; Sanfilippo, Filippo (Peer reviewed; Journal article, 2024)Renewable energy sources, particularly photovoltaic and wind power, are essential in meeting global energy demands while minimising environmental impact. Accurate photovoltaic (PV) and wind power (WP) forecasting is crucial ... -
Graphene and graphene oxide on Ir(111) are transparent to wetting but not to icing
Kyrkjebø, Signe; Cassidy, Andrew; Akhtar, Naureen; Balog, Richard; Scheffler, Martha; Hornekær, Liv; Holst, Bodil; Flatabø, Ranveig (Peer reviewed; Journal article, 2020)Anti-icing coatings reduce the freezing onset temperature for water by changing the chemical and physical environment at the water-substrate interface to prevent ice nucleation and growth. Graphene oxide has several ... -
High temperature oxidation of higher manganese silicides
de Padoue Shyikira, Antoine; Akhtar, Naureen; Skomedal, Gunstein; Sætre, Tor Oskar; Middleton, Peter Hugh (Journal article; Peer reviewed, 2021) -
Highly efficient maximum power point tracking control technique for PV system under dynamic operating conditions
Moosavi, Syed Kumayl Raza; Mansoor, Majad; Zafar, Muhammad Hamza; Khan, Noman Mujeeb; Mirza, Adeel Feroz; Akhtar, Naureen (Peer reviewed; Journal article, 2022) -
Hybrid General Regression NN Model for Efficient Operation of Centralized TEG System under Non-Uniform Thermal Gradients
Khan, Noman Mujeeb; Ahmed, Abbas; Haider, Syed Kamran; Zafar, Muhammad Hamza; Mansoor, Majad; Akhtar, Naureen (Peer reviewed; Journal article, 2023)The global energy demand, along with the proportionate share of renewable energy, is increasing rapidly. Renewables such as thermoelectric generators (TEG) systems have lower power ratings but a highly durable and ... -
Moisture induced degradation in field-aged multicrystalline silicon photovoltaic modules
Segbefia, Oscar Kwame; Akhtar, Naureen; Sætre, Tor Oskar (Peer reviewed; Journal article, 2023)Moisture ingress is one of the key fault mechanisms responsible for photovoltaic (PV) devices degradation. Understanding moisture induced degradation (MID) mechanisms in field-aged PV modules is more reflective of the ... -
A Novel MPPT Controller Based on Mud Ring Optimization Algorithm for Centralized Thermoelectric Generator under Dynamic Thermal Gradients
Zafar, Muhammad Hamza; Abou Houran, Mohamad; Mansoor, Majad; Khan, Noman Mujeeb; Moosavi, Syed Kumayl Raza; Khan, Muhammad Kamran; Akhtar, Naureen (Peer reviewed; Journal article, 2023)Most industrial processes generate raw heat. To enhance the efficiency of industrial operations, this raw heat is recovered. Thermoelectric generators (TEG), as solid state devices, provide an excellent application of heat ... -
A novel optimization algorithm based PID controller design for real-time optimization of cutting depth and surface roughness in finish hard turning processes
Muqeet, Abdul; Israr, Asif; Zafar, Muhammad Hamza; Mansoor, Majad; Akhtar, Naureen (Peer reviewed; Journal article, 2023)This paper proposes a novel method to improve surface finish in turning processes by effectively controlling the cutting depth. A metaheuristic algorithm based PID control system, in combination with a piezoelectric vibration ... -
On the Influence of Cross-Section Size on Measured Strength of SLM-Produced AlSi10Mg-Alloy
Vysochinskiy, Dmitry; Akhtar, Naureen (Peer reviewed; Journal article, 2022)The freedom in choice of geometries in additive manufacturing (AM) favors the use of structures with large surface and small cross-section such as lattice structures and thin-walled hollow profiles. On the other hand, the ... -
Preparation and Characterization of Spherical Nickel Silicide Powder by Inductively Coupled Plasma Spheroidization for Additive Manufacturing
Tareq, Foysal Kabir; Aune, Ragnhild Elizabeth; Grasmo, Geir; Akhtar, Naureen; Sætre, Tor Oskar (The Minerals, Metals & Materials Series;, Chapter; Peer reviewed, 2022)Metal alloy powder with spherical-shaped morphology, high flowability, and packing density is the main requirements for metal-based additive manufacturing (AM). Among metal alloys, nickel silicide is considered as a potential ... -
Training Deep Neural Networks with Novel Metaheuristic Algorithms for Fatigue Crack Growth Prediction in Aluminum Aircraft Alloys
Zafar, Muhammad Hamza; Younis, Hassaan Bin; Mansoor, Majad; Moosavi, Syed Kumayl Raza; Khan, Noman Mujeeb; Akhtar, Naureen (Peer reviewed; Journal article, 2022)