Luc Van Hoorebeke

Bronnikov-aided correction for x-ray computed tomography (2009)

De Witte, Yoni, Boone, Matthieu, Vlassenbroeck, Jelle, Dierick, Manuel, Van Hoorebeke, Luc

When a very-low-absorbing sample is scanned at an x-ray computed tomography setup with a microfocus x-ray tube and a high-resolution detector, the obtained projection images contain not only...

Multi-resolution X-ray CT research applied on geomaterials (2009)

Cnudde, Veerle, Boone, Matthieu, Dewanckele, Jan, De Witte, Yoni, Van Loo, Denis, Pieters, Koen, ...

Many research topics in geology concern the study of internal processes of geo-materials on a pore-scale level in order to estimate their macroscopic behaviour. The microstructure of a porous medium...

Practical use of the modified Bronnikov algorithm in micro-CT (2009)

Boone, Matthieu, De Witte, Yoni, Dierick, Manuel, Vlassenbroeck, Jelle, Van Hoorebeke, Luc

Through the years, the resolution of X-ray Computed Tomography (CT) systems has increased rapidly, in particular for the newer micro- and nano-CT systems. With this increasing resolution, the limits...

Combining micro-CT data and XRF spectra for advanced element analysis (2009)

Boone, Matthieu, Dewanckele, Jan, Cnudde, Veerle, Silversmit, Geert, Vandeputte, Kjeld, Ernst, Gerald, ...

In this study, two different applications of the combination of XRF and µCT will be discussed. The first application is a way of obtaining chemical information on the different compounds in the...

3D image analysis of a volcanic deposit (2009)

De Witte, Yoni, Vlassenbroeck, Jelle, Vandeputte, Kjeld, Dewanckele, Jan, Cnudde, Veerle, Van Hoorebeke, Luc, ...

During the last decades, X-ray micro CT has become a well established technique for non-destructive testing in a wide variety of research fields. Using a series of X-ray transmission images of the...

X-ray tomography as a tool for detailed anatomical analysis (2009)

Van Den Bulcke, Jan, Boone, Matthieu, Van Acker, Joris, Stevens, Marc, Van Hoorebeke, Luc

Wood identification, anatomical examination and retrieval of quantitative information arc important aspects of many research disciplines. Conventional light microscopy with a camera and...

High-resolution X-ray imaging and analysis of coatings on and in wood (2009)

Van Den Bulcke, Jan, Boone, Matthieu, Van Acker, Joris, Van Hoorebeke, Luc

Wood coatings are widely used for aesthetic and protective reasons. Assessment of coating performance during service life is crucial in order to establish a knowledge database for product...

The evaluation of Computed Tomography hard- and software tools for micropaleontologic studies on foraminifera (2009)

Van Loo, Denis, Speijer, Robert, Masschaele, Bert, Dierick, Manuel, Cnudde, Veerle, Boone, Matthieu, ...

Foraminifera (Forams) are single-celled amoeba-like organisms in the sea, which build a tiny calcareous multi-chambered shell for protection. Their enormous abundance, great variation of shape...

Laboratory and Synchrotron Radiation Micro and Nano X-ray Fluorescence (2009)

De Samber, Björn, Evens, Roel, De Schamphelaere, Karel, Masschaele, Bert, Silversmit, Geert, Schoonjans, Tom, ...

Micro X-ray Fluorescence (µ-XRF) is a rapidly evolving analytical technique which allows visualizing the trace level metal distributions within a specimen in an essentially non-destructive manner....

X-ray Fluorescence and Absorption Microtomography reveal Tissue Specific Distribution of Metals in Daphnia magna (2009)

De Samber, Björn, Silversmit, Geert, Schoonjans, Tom, Evens, Roel, De Schamphelaere, Karel, Janssen, Colin, ...

Micro X-ray Fluorescence (µ-XRF) is a rapidly evolving analytical technique which allows visualizing the trace level metal distributions within a specimen in an essentially non-destructive manner....

Detection of very small density fluctuations using the modified Bronnikov algorithm on micro-CT data (2009)

Boone, Matthieu, Almeida, Ana, De Witte, Yoni, Dierick, Manuel, Remon, Jean Paul, Vervaet, Chris, ...

Micro-CT (µCT) is a very useful tool in pharmaceutical sciences. It is able to visualize porosity in the whole sample without destroying it, making the risk of false results due to the sample...

Development of injection moulded matrix tablets based on mixtures of ethylcellulose and low-substituted hydroxypropylcellulose (2009)

Quinten, Thomas, Gonnissen, Yves, Adriaens, Els, De Beer, Thomas, Cnudde, Veerle, Masschaele, Bert, ...

The objective of this study was to produce sustained-release matrix tablets by means of injection moulding and to evaluate the influence of matrix composition, process temperature and viscosity grade...

Correcting phase contrast artefacts in X-ray CT imaging (2009)

De Witte, Yoni, Boone, Matthieu, Vlassenbroeck, Jelle, Dierick, Manuel, Masschaele, Bert, Van Hoorebeke, Luc, ...

When going to higher resolution in X-ray transmission CT, one of the biggest problems is the appearance of phase contrast. Achieving high resolution usually means scanning very small and thus very...

Three-dimensional X-ray imaging and analysis of fungi on and in wood (2009)

Van Den Bulcke, Jan, Boone, Matthieu, Van Acker, Joris, Van Hoorebeke, Luc

As wood is prone to fungal degradation, fundamental research is necessary to increase our knowledge aiming at product improvement. Several imaging modalities are capable of visualizing fungi, but the...

CHARACTERIZATION WITH X-RAYS OF LIQUID LOCATION AND MIGRATION INSIDE BUILDING MATERIALS (2009)

Cnudde, Veerle, Boone, Matthieu, Silversmit, Geert, Dewanckele, Jan, Vlassenbroeck, Jelle, Vincze, Laszlo, ...

Liquid migration inside building materials is influenced by the microstructure of the porous medium and by the physical characteristics of the solids and the fluids that occupy its pore space....

Multi-disciplinary characterisation of a sandstone surface crust (2009)

Cnudde, Veerle, Silversmit, Geert, Boone, Matthieu, Dewanckele, Jan, De Samber, Björn, Schoonjans, Tom, ...

Sandstones are used in many contemporary and historical buildings. With time, these buildings become dark and a surface crust is formed. Generally, these crusts mainly consist of minerals of which...

Virtual histology by means of high-resolution X-ray CT (2008)

Cnudde, Veerle, Masschaele, Bert, De Cock, H, Olstad, K, Vlaminck, Lieven, Vlassenbroeck, Jelle, ...

Micro-CT is a non-destructive technique for 3D tomographic investigation of an object. A 3D representation of the internal structure is calculated based on a series of X-ray radiographs taken from...

X-ray computed microtomography on cementitious materials: Possibilities and limitations (2008)

Boel, Veerle, Cnudde, Veerle, De Schutter, Geert, Van Meel, Bart, Masschaele, Bert, Ye, Guang, ...

In order to achieve a fundamental evaluation of durability on the 'engineering level', an extensive investigation of the microstructure on the 'materials science level' should be carried out. Many...

Dietary restriction of Caenorhabditis elegans by axenic culture reflects nutritional requirement for constituents provided by metabolically active microbes (2008)

Lenaerts, Isabelle, Walker, Glenda A., Van Hoorebeke, Luc, Gems, David, Vanfleteren, Jacques

In Caenorhabditis elegans, several manipulations that affect nutrition slow development, reduce fecundity, and increase life span. These are viewed as dietary restriction (DR) and include culture in...

Comparison of different nano- and micro-focus X-ray computed tomography set-ups for the visualization of the soil microstructure and soil organic matter (2008)

Sleutel, Steven, Cnudde, Veerle, Masschaele, Bert, Vlassenbroeck, Jelle, Dierick, Manuel, Van Hoorebeke, Luc, ...

This study explores the potential of different X-ray computed tomography (X-ray CT) set-ups for the discrimination of soil mineral matter, soil organic matter (OM) and the pore phase. Different X-ray...

The use of 2D pixel detectors in micro- and nano-CT applications (2008)

Dierick, Manuel, Van Hoorebeke, Luc, Jacobs, Patric, Masschaele, Bert, Vlassenbroeck, Jelle, Cnudde, Veerle, ...

Computed tomography or CT is a non-destructive imaging technique that uses penetrating radiation (mostly X-rays) to visualize the internal structure of a sample. The best-known example is the medical...

A new measurement of the structure functions P-LL-P-TT/epsilon and P-LT in virtual Compton scattering at Q(2)=0.33 (GeV/c)(2) (2008)

Janssens, Peter, Doria, L, Achenbach, P, Ryckbosch, Dirk, Van Hoorebeke, Luc, ...

The cross-section of the ep -> e'p'gamma reaction has been measured at Q(2) = 0.33 (GeV/c)(2). The experiment was performed using the electron beam of the MAMI accelerator and the standard detector...

Extensive Jaw Mobility in Suckermouth Armored Catfishes (Loricariidae): A Morphological and Kinematic Analysis of Substrate Scraping Mode of Feeding (2008)

Adriaens, Dominique, Geerinckx, Tom, Vlassenbroeck, Jelle, Van Hoorebeke, Luc, Herrel, Anthony

Loricariidae, or suckermouth armored catfishes, possess upper and lower jaws that are ventrally oriented and that bear teeth that touch the substrate from which algae and other food items are...

A Top-Down Approach using X-ray Imaging Techniques: Instrumental Developments and Applications in Life Science (2008)

De Samber, Björn, Schoonjans, Tom, Silversmit, Geert, Vekemans, Bart, Vincze, Laszlo, Evens, Roel, ...

Synchrotron radiation X-ray fluorescence micro- and nanobeam techniques at second- and third generation SR sources offer the potential of non-destructive multi-element analysis down to trace...

Three dimensional SR-confocal micro XRF combined with absorption microtomography on Daphnia magna: Instrumental developments and recent advances in dataprocessing (2008)

De Samber, Björn, Evens, Roel, Schoonjans, Tom, Silversmit, Geert, Vekemans, Bart, De Schamphelaere, Karel, ...

Daphnia magna are being used to study the mechanism of intoxication by metals (Zn, Cu, Ni) and to develop so called biotic ligand models (BLM's). It has been shown that Daphnia magna responds...

Studying Tissue-Specific Distributions of Metals in Daphnia magna using Scanning X-ray Fluorescence and Absorption Microtomography (2007)

De Samber, Björn, Silversmit, Geert, Schoonjans, Tom, Evens, Roel, De Schamphelaere, Karel, Janssen, Colin, ...

Daphnia magna are being used to study the mechanism of intoxication by metals (Zn, Cu, Ni) and develop so called biotic ligand models (BLM). It has been shown that Daphnia's respond differently to...