Browsing NTNU Open by Title
Now showing items 53672-53691 of 100758
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Leaching kinetics and mechanism of slag produced from smelting-reduction of bauxite for alumina recovery
(Peer reviewed; Journal article, 2020)In the present study, we investigate the kinetics and mechanism of the leaching of calcium aluminate slag in Na2CO3 solution for alumina recovery. The slag consists of leachable phases, e.g., 12CaO·7Al2O3, CaO·Al2O3, ... -
Leaching of Hydrogen Pre-Reduced Mn ore to Produce MnO2
(Bachelor thesis, 2023)HAlMan project team har som mål å utvikle en bærekraftig metode for produksjon av mangandioksid (MnO2). De jobber også med produksjon av manganholdige legeringer for stål og aluminium i tillegg til å utforske ekstraksjon ... -
Leaching of surfactants as a function of oil droplet size and surfactant properties. An approach using mass spectrometry and multivariate data analysis
(Master thesis, 2017)Oil dispersants are used extensively in order to minimize the environmental damage that often follows an oil spill. A widely used dispersant, Corexit 9500A, consists of four surfactants with different properties and a ... -
Lead concentrations in blood from incubating common eiders (Somateria mollissima) in the Baltic Sea.
(Journal article; Peer reviewed, 2020)Here we investigate if lead may be a contributing factor to the observed population decline in a Baltic colony of incubating eiders (Somateria mollissima). Body mass and blood samples were obtained from 50 incubating female ... -
Lead isotopic signatures in blood from incubating common eiders (Somateria mollissima) in the central Baltic Sea
(Peer reviewed; Journal article, 2020)The Christiansø colony of common eiders (Somateria mollissima) in the central Baltic Sea were exposed to high levels of Pb during the 2018 breeding season that were not present in 2017. Due to these high Pb blood levels, ... -
Lead-Free Ferroelectric KNN Films for Biomedical Applications
(Doctoral theses at NTNU;2020:246, Doctoral thesis, 2020)Ferroelectric materials are utilized in a wide range of different electronic devices throughout our modern society, including all kinds of consumer electronics, ultrasound equipment, minimally invasive surgical tools and ... -
Lead-Free Ferroelectric Materials based on BiFeO3 and Bi0.5K0.5TiO3
(Doctoral thesis at NTNU;2015:180, Doctoral thesis, 2015)Blyfrie ferroelektriske materialer basert på BiFeO3 og Bi0.5K0.5TiO3 Ferroelektriske materialer finnes i dag i nesten all elektronikk, inkludert forbrukerelektronikk, som for eksempel blekk-printere, mobiltelefoner og ... -
Lead-free piezoelectric Materials based on Silver Niobate
(Master thesis, 2013)Studies done on base material AgNbO3 reveals that a large polarization, which is comparable to values reported for PZT, occurs under application of a high electric field. Density functional calculations show that solid ... -
Lead-free piezoelectric materials for medical application
(Master thesis, 2018)In this work, K0.5Na0.5NbO3, (KNN) and K0.495Na0.495Ca0.005NbO3 thin films for biomedical applications have been prepared from an aqueous precursor solutions with 2.5 or 5.0 mol% of alkali excess. Ca2+ was introduced as ... -
Lead-Free Relaxor-Like 0.75Bi(0.5)K(0.5)TiO(3)-0.25BiFeO(3) Ceramics with Large Electric Field-Induced Strain
(Journal article; Peer reviewed, 2012)Dense and phase-pure ferroelectric ceramics of 75 mol.% Bi0.5K0.5TiO3 – 25 mol.% BiFeO3 are prepared by the conventional solid state reaction method. Their crystal structure is analyzed and discussed. The dielectric and ... -
Leader-follower Dynamic Synchronization of Surface Vessels
(Journal article, 2006)This paper introduces a dynamic leader-follower synchronization scheme for surface vessels that specifies the behavior of the follower vessels as they approach their desired position in a formation, or in a docking operation. ... -
Leader-Follower Synchronisation for a Class of Underactuated Systems
(Lecture Notes in Control and Information Sciences;470, Chapter; Peer reviewed, 2017)In this work leader-follower synchronization is considered for underactuated followers in an inhomogeneous multi-agent system. The goal is to synchronise the motion of a leader and an underactuated follower. Measurements ... -
Leader-Follower Synchronization of Mechanical Systems
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:58, Doctoral thesis, 2010)In this thesis a nonlinear output feedback scheme for leader-follower synchronization of rigid robot manipulators and ships is developed. The scheme is also applicable to other systems with Lagrangian dynamics in the same ... -
Leadership @ sea: Essential non-technical skills
(Chapter, 2017)The aim of the paper is to suggest a taxonomy of the non-technical skills that are relevant for maritime leadership. The empirical basis is approximately fifty interviews with crewmembers on three different tankers. The ... -
Leadership and leadership communication in a matrix structured organization : some critical factors
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:233, Doctoral thesis, 2005)This case study has shown how nearly every success and failure in the matrix structured Segment X was a result of leadership behaviour. If Project I was to be an unreserved success every leader on every level had to succeed ... -
Leadership behavior in elite football
(Master thesis, 2023)Denne masteroppgaven har hatt som hensikt å belyse profesjonelle mannlige fotballspilleres erfaringer med trenere de har jobbet med, og hvordan de opplevde treneratferdene har fremmet og hemmet skapelsen av et vell-fungerende ... -
Leadership development program - useful? Which influence/impact have leadership development programs had to your development as a leader?
(Master thesis, 2014)This is a quantitative study where the main objective was to find out which influence/impact leadership development programs have had for leaders’ development. The basis was different theories within leadership development, ... -
Leadership in the context of digitalization: theoretical and empirical insights
(Master thesis, 2020)Digitalisering er et alarmerende fenomen som forvandler eksisterende ledelse i rask fart. Digitalisering endrer landskapet i arbeidet, inkludert hvordan man effektivt kan lede ansatte i den digitale æra. Selv om lederegenskaper ... -
Leadership of volunteers - an exploration into what matters according to leaders in voluntary organizations in Norway.
(Master thesis, 2023)Hensikten med studien er å undersøke ledelse av frivillige i frivillig sektor. Jeg har undersøkt hva lederne som deltok i studien opplever som viktig i ledelse av frivillige, og hva som bidrar til at de opplever å være ...