Blar i Department of Physics and Technology på emneord "VDP::Matematikk og naturvitenskap: 400::Fysikk: 430::Elektromagnetisme, akustikk, optikk: 434"
Viser treff 1-7 av 7
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Determining the fibrillar orientation of bast fibres with polarized light microscopy: the modified Herzog test (red plate test) explained
(Peer reviewed; Journal article, 2013)The identification of bast fibre samples, in particular, bast fibres used in textiles, is an important issue in archaeology, criminology and other scientific fields. One of the characteristic features of bast fibres is ... -
Monte Carlo simulations of a scanning system based on a panoramic X-ray tube with a conical anode
(Peer reviewed; Journal article, 2014-08-21)Monte Carlo simulations were used to study photon production in a panoramic X-ray tube with a conical tungsten target to determine the optimal characteristics of the target shape and electron beam configuration. Several ... -
Mueller matrix measurements and modeling pertaining to Spectralon white reflectance standards
(Peer reviewed; Journal article, 2012)The full Mueller matrix for a Spectralon white reflectance standard was measured in the incidence plane, to obtain the polarization state of the scattered light for different angles of illumination. The experimental setup ... -
Nettle as a distinct Bronze Age textile plant
(Peer reviewed; Journal article, 2012-09-28)It is generally assumed that the production of plant fibre textiles in ancient Europe, especially woven textiles for clothing, was closely linked to the development of agriculture through the use of cultivated textile ... -
Periodic shock-emission from acoustically driven cavitation clouds: a source of the subharmonic signal
(Peer reviewed; Journal article, 2014-12)Single clouds of cavitation bubbles, driven by 254 kHz focused ultrasound at pressure amplitudes in the range of 0.48–1.22 MPa, have been observed via high-speed shadowgraphic imaging at 1 × 10⁶ frames per second. Clouds ... -
Power budget equations and calibration factors for fish abundance estimation using scientific echo sounders and sonar systems
(Peer reviewed; Journal article, 2016-07-09)Acoustic methods used in fish abundance estimation constitute a key part of the analytic assessment that makes the basis for abundance estimation of marine resources. The methods rely on power-budget equations and calibrated ... -
Viking and early middle ages Northern Scandinavian textiles proven to be made with hemp
(Peer reviewed; Journal article, 2013-10-18)Nowadays most plant textiles used for clothing and household are made of cotton and viscose. Before the 19th century however, plant textiles were mainly made from locally available raw materials, in Scandinavia these were: ...