Blar i Fakultet for naturvitenskap (NV) på tittel
Viser treff 12389-12408 av 12453
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Wire Arc Additive Manufacturing of Aluminium Alloys
(Doctoral theses at NTNU;2021:263, Doctoral thesis, 2021)Summary Additive manufacturing of metals has gained considerable attention from the industry and academia in the last decade. The attributes to create stand-alone components with novel designs and enhanced properties ... -
Wire Arc Additive Manufacturing of an Al-Mg Aluminium Matrix Nanocompsite
(Master thesis, 2020)Målet med denne studien var å benytte 10 mm ekstrudatprofiler fra kontinuerlig skrueekstrusjon av metaller (Metal Continuous Scew Extrusion, MCSE), en ny metode for fast tilstandsproduksjons av metalltråd for additiv ... -
Within-colony segregation of foraging areas: from patterns to processes
(Journal article, 2023-02-27)Spatial segregation of foraging areas among conspecifics breeding in neighbouring colonies has been observed in several colonial vertebrates and is assumed to originate from competition and information use. Segregation ... -
Wolverine foraging strategies in a multiple-use landscape
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:43, Doctoral thesis, 2008)The principal objective of the research project Wolverines in a Changing World was to gain better insights into the role wolverines have in ecosystem dynamics, their adaptation to ecosystem change, and its implications for ... -
Wood-based nanocellulose and bioactive glass modified gelatin-alginate bioinks for 3D bioprinting of bone cells
(Peer reviewed; Journal article, 2019)A challenge in the extrusion-based bioprinting is to find a bioink with optimal biological and physicochemical properties. The aim of this study was to evaluate the influence of wood-based cellulose nanofibrils (CNF) and ... -
Work Hardening and Mechanical Anisotropy of Aluminium Sheets and Profiles
(Dr. ingeniøravhandling, 0809-103X; 2003:105, Doctoral thesis, 2003)The processing of aluminium alloys from casting to end product is associated with a large number of metallurgical phenomena. In order to further improve and optimise process routes and alloys, a thorough understanding of ... -
Work hardening and Portevin-Le Chatelier (PLC) effect in aluminium alloys
(Master thesis, 2019)Bruk av enkelte Al-Mg-legeringer kan føre til utfordringer. Innenfor visse tøyningshastigheter og temperaturer kan det oppstå overflatefeil og tap av mekaniske egenskaper. Dette på grunn av Portevin-Le Chatelier-effekten. ... -
Work hardening and Portevin-Le Chatelier (PLC) effect in aluminium alloys
(Master thesis, 2018)Mechanical testing and microstructure characterization of an AA5182 alloy is performed for use as input for calibration and further development of models for work hardening and dynamic strain aging effects. The experimental ... -
Workshop in Trondheim and excursions to the Norwegian seafood industry and NTNU
(Research report, 2014)During the SeaMed project we have arranged workshops and visited seafood industry in Albania, Montenegro, Kosovo and Bosnia & Herzegovina. In October 2014, the whole consortium visited Trondheim. The three-day workshop ... -
World checklist of hornworts and liverworts
(Journal article; Peer reviewed, 2016)A working checklist of accepted taxa worldwide is vital in achieving the goal of developing an online flora of all known plants by 2020 as part of the Global Strategy for Plant Conservation. We here present the first-ever ... -
wTO: An R package for computing weighted topological overlap and a consensus network with integrated visualization tool
(Journal article; Peer reviewed, 2018)Background Network analyses, such as of gene co-expression networks, metabolic networks and ecological networks have become a central approach for the systems-level study of biological data. Several software packages exist ... -
X-ray absorption spectroscopic studies on active metal sites in zeotypes during the selective catalytic reduction of NOx with propene in an oxygen rich atmosphere
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:130, Doctoral thesis, 2005)This thesis is concerned with the synthesis and characterisation of CuAPO-5, CuSAPO-5 and also copper ion-exchanged SAPO-5, SAPO-11 and ZSM-5. The ability of these materials to catalyse the selective reduction of NOx using ... -
X-ray absorption, X-ray diffraction and electron microscopy study of spent cobalt based catalyst in semi-commercial scale Fischer-Tropsch synthesis
(Peer reviewed; Journal article, 2014)Calcined, reduced and spent Co-Re/γ-Al2O3 catalysts for Fischer–Tropsch synthesis (FTS) were characterized and compared. Co-K-edge and Re-LIII-edge X-ray absorption near edge structure (XANES), X-ray powder diffraction ... -
X-ray Diffraction and Tomography Studies of Functional Organic Fibres
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:74, Doctoral thesis, 2013)Structural characterisations of materials belong to the primary interests of basic and applied research, since they provide insights into the interactions of molecules and atoms, establish correlations with desired properties ... -
X-ray Microprobe Investigation of Iron During a Simulated Silicon Feedstock Extraction Process
(Peer reviewed; Journal article, 2016)Elemental silicon is extracted through carbothermic reduction from silicon-bearing raw feedstock materials such as quartz and quartzites. We investigate the micron-scale distribution and valence state of iron, a deleterious ... -
X-ray nanoscopy of a bulk heterojunction
(Journal article; Peer reviewed, 2016)Optimizing the morphology of bulk heterojunctions is known to significantly improve the photovoltaic performance of organic solar cells, but available quantitative imaging techniques are few and have severe limitations. ... -
X-ray Scattering Study of Nanostructured GaSb Surfaces
(Master thesis, 2013)In this thesis the surface structure of a sample consisting of slightly tilted, denselypacked Gallium-Antimonide (GaSb) nanocones, self-assembled through Ion Beam Sputtering(IBS) is investigated with a selection of X-ray ... -
X-ray Studies of Capture, Storage and Release of CO2
(Master thesis, 2012)We show experimentally that CO2 intercalates into the interlayer spaceof the synthetic smectite clay Li-fluorohectorite (LiFh). The intercalationoccurs for a range of conditions in terms of pressure (5 bar to 20 bar) ... -
X-ray Studies of Carbon Dioxide Intercalation in Na-Fluorohectorite Clay at Near-Ambient Conditions
(Journal article, 2012)We show experimentally that gaseous CO2 intercalates into the interlayer space of the synthetic smectite clay Na-fluorohectorite at conditions not too far from ambient. The mean interlayer repetition distance of the clay ... -
Xandarovula patula (Gastropoda: Ovulidae) new to Scandinavia
(Journal article; Peer reviewed, 2011)In August 2009 six specimens of the ovulid gastropod Xandarovula patula (Pennant, 1777) (formerly known as Simnia patula Pennant, 1777), were found in dredge samples from a locality west of Smögen in western Sweden (58°22′N ...