Search Results - "Sørensen, H.O."

Improved segmentation of X-ray tomography data from porous rocks using a dual filtering approach by Müter, D., Pedersen, S., Sørensen, H.O., Feidenhans'l, R., Stipp, S.L.S.

“…We present a new method for image segmentation of X-ray microtomography data that is especially adapted for samples where the feature of interest, in this case…”
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Microstructure and micromechanics of the heart urchin test from X-ray tomography by Müter, D., Sørensen, H.O., Oddershede, J., Dalby, K.N., Stipp, S.L.S.

“…[Display omitted] The microstructure of many echinoid species has long fascinated scientists because of its high porosity and outstanding mechanical…”
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Direct observation of 3-D grain growth in Al–0.1% Mn by Schmidt, S., Olsen, U.L., Poulsen, H.F., Sørensen, H.O., Lauridsen, E.M., Margulies, L., Maurice, C., Juul Jensen, D.

“…Grain growth in an Al–0.1% Mn sample has been measured non-destructively using a three-dimensional X-ray diffraction (3DXRD) microscope. The 3-D grain…”
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Direct non-destructive observation of bulk nucleation in 30% deformed aluminum by West, S.S., Schmidt, S., Sørensen, H.O., Winther, G., Poulsen, H.F., Margulies, L., Gundlach, C., Juul Jensen, D.

“…A 30% deformed aluminum sample was mapped non-destructively using three-dimensional X-ray diffraction (3DXRD) before and after annealing to nucleation of…”
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Looking for the Signal: A guide to iterative noise and artefact removal in X-ray tomographic reconstructions of porous geomaterials by Bruns, S., Stipp, S.L.S., Sørensen, H.O.

“…•Denoising of tomography reconstructions needs to consider correlation in the noise.•An iterative modification to the nonlocal means algorithm is…”
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Statistical representative elementary volumes of porous media determined using greyscale analysis of 3D tomograms by Bruns, S., Stipp, S.L.S., Sørensen, H.O.

“…•Segmentation based analysis can fail in fine grained or compacted porous materials.•Remapping greyscale values to local porosity enables statistical…”
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980 – Psychotropic polypharmacy in patients with severe mental illness. a controlled intervention study aimed to reduce the use of psychotropic medication by Hjorth, P, Jørgensen, P.M, Sørensen, H.Ø

“…Background Patients with mental illness receive psychotropic medicine in high dosages and from more than one drug. Additionally the patients have high level of…”
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P02-99 - Mental health in the workplace by Sørensen, H.Ø, Munk-Joergensen, P

“…Introduction Depression and simple phobia are the most prevalent mental illnesses among employees leading to an increased number of sick days, decreased social…”
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P-1018 - Assessment of mental illness in danish workplaces the use of SCL-90-R as screening instrument to identify possible psychiatric cases by Sørensen, H.Ø, Østergaard, S.D, Munk-Jørgensen, P

“…Introduction Many cases of mental illness are not detected and therefore not treated adequately. One reason for the low detection rate is that people do not…”
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Transient increase in reactive surface and the macroscopic Damköhler number in chalk dissolution by Yang, Y., Rogowska, M., Zheng, Y., Bruns, S., Gundlach, C., Stipp, S.L.S., Sørensen, H.O.

“…[Display omitted] •Direct observation of increasing surface area in chalk using in situ X-ray imaging.•Model simulations suggest that the increase does not…”
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Evaluation of the behaviour of the lateral boreholes in the Gorm chalk field by Medetbekova, M.K., Hajiabadi, M.R., Christensen, H.F., Brovelli, A., Shamsolhodaei, A., Sørensen, H.O., Müter, D., Nick, H.M.

“…Open hole wellbores present cost efficient completion solution; however, instability of such boreholes in weak formations such as chalk in the course of…”
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Impact of microstructure evolution on the difference between geometric and reactive surface areas in natural chalk by Yang, Y., Bruns, S., Stipp, S.L.S., Sørensen, H.O.

“…•The difference between the geometric surface area and the reactive surface area of a natural porous structure increases over time in a sustained, imposed flow…”
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A fuzzy logic based algorithm for defining and extracting pore network structure from tomography images of rocks by Moaddel, A., Müter, D., Gooya, R., Sørensen, H.O., Stipp, S.L.S.

“…•The definition of a pore is vague and arbitrary. To make sense of pore network models and pore related quantities (pore size distribution, pore coordination…”
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P01-371 - Outpatient treatment in mental health care by Bording, M.K, Sørensen, H.Ø, Puschner, B, Munk-Jørgensen, P

“…Introduction There is a lack of knowledge on outpatient treatment in mental health and its outcome. The major reason for this is that research on clinical…”
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Numerical simulations of NMR relaxation in chalk using local Robin boundary conditions by Ögren, M., Jha, D., Dobberschütz, S., Müter, D., Carlsson, M., Gulliksson, M., Stipp, S.L.S., Sørensen, H.O.

“…[Display omitted] •Random walk on synchrotron radiation CT-scanned chalk samples.•Numerical NMR dynamics are shown to be improved by local boundary…”
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Smaller Calcite Lattice Deformation Caused by Occluded Organic Material in Coccoliths than in Mollusk Shell by Frølich, S, Sørensen, H. O, Hakim, S. S, Marin, F, Stipp, S. L. S, Birkedal, H

“…The growth and nucleation of biominerals are directed and affected by associated biological molecules. In this paper, we investigate the influence of occluded…”
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X-ray microscopy in four dimensions by Jensen, D. Juul, Lauridsen, E.M., Margulies, L., Poulsen, H.F., Schmidt, S., Sørensen, H.O., Vaughan, G.B.M.

“…Three-dimensional X-ray diffraction (3DXRD) microscopy offers the possibility of time-resolved mapping of structures down to the micrometer scale1–6, i.e…”
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Dissolved CO2 Increases Breakthrough Porosity in Natural Porous Materials by Yang, Y, Bruns, S, Stipp, S. L. S, Sørensen, H. O

“…When reactive fluids flow through a dissolving porous medium, conductive channels form, leading to fluid breakthrough. This phenomenon is caused by the…”
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Mental health in the workplace by Sørensen, H.Ø., Munk-Joergensen, P.

“…Introduction Depression and simple phobia are the most prevalent mental illnesses among employees leading to an increased number of sick days, decreased social…”
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Mapping grains and their dynamics in three dimensions by Sørensen, H.O., Jakobsen, B., Knudsen, E., Lauridsen, E.M., Nielsen, S.F., Poulsen, H.F., Schmidt, S., Winther, G., Margulies, L.

“…The three-dimensional X-ray diffraction (3DXRD) microscope has become a mature tool to investigate the microstructure in the bulk of polycrystalline materials…”
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