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Recurrent neural network with density-based clustering for group pattern detection in energy systems
(Peer reviewed; Journal article, 2022)This research explores a new direction in power system technology and develops a new framework for pattern group discovery from large power system data. The efficient combination between the recurrent neural network and ... -
Recycled aggregates derived from excavation materials — mechanical performance and identification of weak minerals
(Peer reviewed; Journal article, 2022)The present study investigates the mechanical performance of recycled aggregates derived from excavation materials (REM). REM is blended with different quantities of recycled phyllite materials (RPM) and is investigated ... -
Recycled Aluminium Alloys and their Models: Role and Behaviour of Alloying Elements during Alkaline Etching
(Peer reviewed; Journal article, 2023)Alkaline etching is a common pretreatment for aluminum surfaces. Etching behavior was compared between an alloy based on post-consumer scrap (PCS) and several model alloys of rolled AA3005 and extruded AA6060 with ... -
Recycling of the Flue Gas from Aluminium Electrolysis Cells
(The Minerals, Metals & Materials Series;2367-1181, Chapter; Peer reviewed, 2020)Recycling of the flue gas from aluminium reduction cells is a possible method for increasing the CO2 concentration, thereby enabling CO2 capture. The present paper represents a preliminary study concerning some of the ... -
Recycling of the Rare Earth Oxides from Spent Rechargeable Batteries Using Waste Metallurgical Slags
(Journal article; Peer reviewed, 2013)A high temperature process for recycling spent nickel-metal hydride rechargeable batteries has been recently developed at SINTEF/NTNU. The spent battery modules were first frozen with liquid nitrogen for the de-activation ... -
Redesigning Work With a Lightweight Approach to Coordination Technology
(Journal article; Peer reviewed, 2018)Coordination of information and resources is central to efficient ward management. Tools to aid coordination include standardized procedures and paper lists and, more recently, electronic tools such as whiteboards and ... -
Redox transformations of Ru catalyst during NO oxidation at industrial nitric acid production conditions
(Peer reviewed; Journal article, 2023)Oxidation of nitric oxide is one of the main steps in the Ostwald process for industrial nitric acid production. This work summarises the use of - supported Ru catalyst to study the oxidation of NO to NO at ambient and 4 ... -
Reduced head steadiness in whiplash compared with non-traumatic neck pain
(Journal article; Peer reviewed, 2010) -
Reduced order models for finite-volume simulations of turbulent flow around wind-turbine blades
(Peer reviewed; Journal article, 2021)The computational cost of the design optimisation of wind turbines, as well as the optimisation of the operation and maintenance of offshore wind farms represents a limitation to the application of conventional simulation ... -
Reduced well path parameterization for optimization problems through machine learning
(Peer reviewed; Journal article, 2021)In this work we apply a recently developed machine learning routine for automatic well planning to simplify well parameterization in reservoir simulation models. This reduced-order parameterization is shown to be beneficial ... -
Reducing Numerical Artifacts by Sacrificing Well-Balance for Rotating Shallow-Water Flow
(Chapter, 2023)We consider the problem of rotational shallow-water flow for which non-trivial rotating steady-state solutions are of great importance. In particular, we investigate a high-resolution central-upwind scheme that is well-balanced ... -
Reduction and Dissolution Behaviour of Manganese Slag in the Ferromanganese Process
(Journal article; Peer reviewed, 2020)The reduction and liquidus behaviour of manganese slag with different basicities were studied in non-isothermal experiments in the temperature range of 1400–1500 °C. Certain amounts of quartz were added to Assmang ore ... -
Reduction Kinetics of Pre-Oxidized Ilmenite Pellets by H2-H2O Gas Mixtures
(Peer reviewed; Journal article, 2023)The reduction behavior of pelletized and pre-oxidized ilmenite is investigated in H2-H2O atmospheres containing between 0 and 7% H2O and at temperatures between 983 and 1183 K (710 and 910 °C). The reduction mechanism ... -
Reference case and test case for benchmarking of HiPerCap technologies
(Peer reviewed; Journal article, 2017)HiPerCap aims to develop high-potential novel and environmentally benign technologies and processes for post-combustion CO2 capture leading to real breakthroughs. The project includes all the main separation categories for ... -
A Reference Data Model to Specify Event Logs for Big Data Pipeline Discovery
(Peer reviewed; Journal article, 2023)State-of-the-art approaches for managing Big Data pipelines assume their anatomy is known by design and expressed through ad-hoc Domain-Specific Languages (DSLs), with insufficient knowledge of the dark data involved in ... -
Reference data set of volcanic ash physicochemical and optical properties
(Peer reviewed; Journal article, 2017)Uncertainty in the physicochemical and optical properties of volcanic ash particles creates errors in the detection and modeling of volcanic ash clouds and in quantification of their potential impacts. In this study, we ... -
Reflectivity and polarization dependence of polysilicon single-film broadband photonic crystal micro-mirrors
(Journal article, 2012)We report on the fabrication of 2-D photonic crystal (PC) micro-mirrors, and Finite Difference Time Domain (FDTD) simulations and measurements of their reflectance spectra and polarization dependence at normal incidence. ... -
Regenerable Sorbents for High-Temperature Desulfurization of Syngas from Biomass Gasification
(Peer reviewed; Journal article, 2021)Single-metal high-temperature solid sorbents for syngas cleaning using Mn, Ca, Fe, Cu, or Mo supported on γ-Al2O3 were synthesized, characterized, and tested in a fixed-bed reactor. H2S and SO2 concentrations in the gas ...