Searched for: subject:"Reflectance"
(1 - 20 of 121)

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Tsoy, Natalya (author), Prado, Valentina (author), Wypkema, Aike (author), Quist, J.N. (author), Mourad, Maurice (author)
Environmental analysis should be performed early in the Research and Development (R&D) phases of new technologies to timely determine potential impact and, thereby, include prevention and minimization of unfavorable ecological impact into the innovation process. Here, we demonstrate the application of anticipatory Life Cycle Assessment ...
journal article 2019
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Adatrao, S. (author), Sciacchitano, A. (author)
A novel approach is introduced that allows the elimination of undesired laser light reflections from particle image velocimetry (PIV) images. The approach relies upon anisotropic diffusion of the light intensity, which is used to generate a background image to be subtracted from the original image. The intensity is diffused only along the...
journal article 2019
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Swamy, A. (author), Burström, Gustav (author), Spliethoff, Jarich W. (author), Babic, Drazenko (author), Reich, Christian (author), Groen, Joanneke (author), Edström, Erik (author), Terander, Adrian Elmi (author), Racadio, John M. (author), Dankelman, J. (author), Hendriks, B.H.W. (author)
Safe and accurate placement of screws remains a critical issue in open and minimally invasive spine surgery. We propose to use diffuse reflectance (DR) spectroscopy as a sensing technology at the tip of a surgical instrument to ensure a safe path of the instrument through the cancellous bone of the vertebrae. This approach could potentially...
journal article 2019
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Hartstra, I.E. (author), Almagro Vidal, C. (author), Wapenaar, C.P.A. (author)
Virtual Green's functions obtained by seismic interferometry (SI) can provide valuable reflectivity data that can complement tomographic inversion schemes. However, virtual reflections are affected by illumination irregularities that are typical of earthquake-induced wavefields recorded by the receiver array. As a consequence, irregular...
journal article 2018
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Wu, Y. (author)
The Aerosol Optical Depth (AOD), a measure of the scattering and absorption of light by aerosols, has been extensively used for scientific research such as monitoring air quality near the surface due to fine particles aggregated, aerosol radiative forcing (cooling effect against the warming effect by carbon dioxide CO2 ), aerosol long-term trend...
doctoral thesis 2018
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Rajabzadehdizaji, Aydin (author), Heusdens, R. (author), Hendriks, R.C. (author), Groves, R.M. (author)
In the past few decades, fibre Bragg grating (FBG) sensors have gained a lot of attention in the field of distributed point strain measurement. One of the most interesting properties of these sensors is the presumed linear relationship between the strain and the peak wavelength shift of the FBG reflected spectra. However, subjecting sensors to a...
journal article 2018
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Dooley, Kathryn A. (author), Gifford, E. Melanie (author), van Loon, A. (author), Noble, Petria (author), Zeibel, Jason G. (author), Conover, Damon M. (author), Alfeld, Matthias (author), van der Snickt, G.R. (author), Legrand, Stijn (author), Janssens, Koen (author), Dik, J. (author), Delaney, John K. (author)
Late paintings of Rembrandt van Rijn (1606–1669) offer intriguing problems for both art historians and conservation scientists. In the research presented here, the key question addressed is whether observed stylistic differences in paint handling can be correlated with material differences. In Saul and David, in the collection of the Royal...
journal article 2018
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Adank, Maartje W. (author), Fleischer, J.C. (author), Dankelman, J. (author), Hendriks, B.H.W. (author)
In breast surgery, a lack of knowledge about what is below the tissue surface may lead to positive tumor margins and iatrogenic damage. Diffuse reflectance spectroscopy (DRS) is a spectroscopic technique that can distinguish between healthy and tumor tissue making it a suitable technology for intraoperative guidance. However, because tumor...
journal article 2018
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Langhout, Gerrit C. (author), Kuhlmann, Koert F.D. (author), Schreuder, Pim (author), Bydlon, Torre M. (author), Smeele, Ludi E. (author), van den Brekel, Michiel W.M. (author), Sterenborg, Henricus J.C.M. (author), Hendriks, B.H.W. (author), Ruers, Theo J.M. (author)
Background: Careful identification of nerves during head and neck surgery is essential to prevent nerve damage. Currently, nerves are identified based on anatomy and appearance, optionally combined with electromyography (EMG). In challenging cases, nerve damage is reported in up to 50%. Recently, optical techniques, like diffuse reflectance...
journal article 2018
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van Driel, W.D. (author), Beijer, JGJ (author), Bikker, J.W. (author), van Blokland, C.H.M. (author), Ankomah, C. (author), Jacobs, B. (author)
We have seen an increasing number of reported colour maintenance issues in the market when it concerns LED-based products. Besides this, there are also requests to provide products that have < 2 SDCM colour point changes over lifetime. To understand the mechanisms behind colour maintenance in our LED-portfolio we have developed a...
conference paper 2018
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Brouwer de Koning, Susan G. (author), Baltussen, Elisabeth J.M. (author), Karakullukcu, M. Baris (author), Dashtbozorg, Behdad (author), Smit, Laura A. (author), Dirven, Richard (author), Hendriks, B.H.W. (author), Sterenborg, Henricus J.C.M. (author), Ruers, Theo J.M. (author)
This ex-vivo study evaluates the feasibility of diffuse reflectance spectroscopy (DRS) for discriminating tumor from healthy tissue, with the aim to develop a technology that can assess resection margins for the presence of tumor cells during oral cavity cancer surgery. Diffuse reflectance spectra were acquired on fresh surgical specimens...
journal article 2018
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Balthasar, Andrea J.R. (author), Bydlon, Torre M. (author), Ippel, Hans (author), van der Voort, Marjolein (author), Hendriks, B.H.W. (author), Lucassen, Gerald W. (author), van Geffen, Geert Jan (author), van Kleef, Maarten (author), van Dijk, Paul (author), Lataster, Arno (author)
Background: During several anesthesiological procedures, needles are inserted through the skin of a patient to target nerves. In most cases, the needle traverses several tissues—skin, subcutaneous adipose tissue, muscles, nerves, and blood vessels—to reach the target nerve. A clear identification of the target nerve can improve the success of...
journal article 2018
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de Vries, F.K. (author), Shen, J. (author), Skolasinski, R.J. (author), Nowak, M.P. (author), Varjas, D. (author), Wang, L. (author), Wimmer, M.T. (author), Zwanenburg, F.A. (author), Li, A. (author), Kölling, S. (author), Verheijen, M.P.A.M. (author), Bakkers, E.P.A.M. (author), Kouwenhoven, Leo P. (author), More Authors (author)
Low dimensional semiconducting structures with strong spin-orbit interaction (SOI) and induced superconductivity attracted great interest in the search for topological superconductors. Both the strong SOI and hard superconducting gap are directly related to the topological protection of the predicted Majorana bound states. Here we explore the...
journal article 2018
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Zhang, L. (author), Slob, E.C. (author)
We retrieve transmission compensated subsurface primary reflections from the reflection response measured at the surface. This is achieved by filtering the reflection response. The application of this scheme does not require model information. In this process, the reflection response is convolved and correlated with itself. The result after each...
conference paper 2018
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Alkadri, M.F. (author), Turrin, M. (author), Sariyildiz, I.S. (author)
The utilization of point cloud as a 3D laser scanning product has reached across
multi-disciplines in terms of data processing, data visualization, and data
analysis. This study particularly investigates further the use of typical attributes
of raw point cloud data consisting of XYZ (position information), RGB (colour
information...
conference paper 2018
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Boullenger, B. (author)
The theory of seismic interferometry predicts that the cross-correlation (and possibly summation) between seismic recordings at two separate receivers allows the retrieval of an estimate of the inter-receiver response, or Green's function, from a virtual source at one of the receiver positions. Ideally, the recordings must consist of the...
doctoral thesis 2017
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Dabironezare, S.O. (author), Neto, A. (author), Llombart Juan, N. (author)
Passive imaging cameras at sub-millimeter wave-lengths are currently entering a new era with the development of large format arrays of direct detectors. Several of these arrays are being developed with bare absorbing meshes without any antenna coupling (lens or horn) structures. This paper uses a spectral electromagnetic model to analyze the...
conference paper 2017
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Hoving, J.S. (author), Metrikine, A. (author)
This contribution considers the wave reflection at the interface between a discrete lattice that describes the nonlinear near-field response to a dynamic load and a matching system that describes the linear far-field response. The near-field system is modelled as a one-dimensional discrete system of particles that is capable of describing...
conference paper 2017
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Rajabzadehdizaji, Aydin (author), Groves, R.M. (author), Hendriks, R.C. (author), Heusdens, R. (author)
In this paper the behaviour of fibre Bragg grating (FBG) sensors under non-uniform strain distributions was analysed. Using the fundamental matrix approach, the length of the FBG sensor was discretised, with each segment undergoing different strain values. FBG sensors that are embedded inside composites, also undergo such non-uniform strain...
conference paper 2017
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Baltussen, Elisabeth J.M. (author), Snaebjornsson, Petur (author), De Koning, Susan G.Brouwer (author), Sterenborg, Henricus J.C.M. (author), Aalbers, Arend G.J. (author), Kok, Niels (author), Beets, Geerard L. (author), Hendriks, B.H.W. (author), Kuhlmann, Koert F.D. (author), Ruers, Theo J.M. (author)
Colorectal surgery is the standard treatment for patients with colorectal cancer. To overcome two of the main challenges, the circumferential resection margin and postoperative complications, real-time tissue assessment could be of great benefit during surgery. In this ex vivo study, diffuse reflectance spectroscopy (DRS) was used to...
journal article 2017
Searched for: subject:"Reflectance"
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