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Experimental and Numerical Studies of Gas Permeability through Orthogonal Networks for Isotropic Porous Material

Grzegorz Wałowski
2021 Materials  
With regard to the problem of gas flow through isotropic porous deposits, the issues were considered in the category of description of gas movement mechanisms for structural models of the skeleton.  ...  On the other hand, the highest value of the flow resistance is gradually achieved in the range of gas velocity (1–10) ms−1. This is due to the different structure of the isotropic polyamide material.  ...  structure of its structure Figure 4 , which is similar to a diamond pattern and has isotropic proper-ties.  ... 
doi:10.3390/ma14143832 fatcat:3ldf6tl3wngpnnkm72eyndobmi

$3D+t$ Morphological Processing: Applications to Embryogenesis Image Analysis

M. A. Luengo-Oroz, D. Pastor-Escuredo, Carlos Castro-Gonzalez, E. Faure, T. Savy, B. Lombardot, J. L. Rubio-Guivernau, L. Duloquin, M. J. Ledesma-Carbayo, P. Bourgine, N. Peyrieras, A. Santos
2012 IEEE Transactions on Image Processing  
Several methods (filtering, tracking, segmentation) dedicated to the analysis of 3D +1 datasets of zebrafish embryogenesis are introduced and validated through a synthetic dataset.  ...  Then, we illustrate the application of these methods to the analysis of datasets of zebrafish early development acquired with various microscopy techniques.  ...  ACKNOWLEDGMENT The authors would like to thank the ccIN2P3, J.-Y. Nief and P. Calvat for their support with data management, I. Colin, S. Desnoulez, and A.  ... 
doi:10.1109/tip.2012.2197007 pmid:22562755 fatcat:uc6uladubjewrbkcuhf5sg4j7u

A coalescence criterion for porous single crystals

J. Hure
2019 Journal of the mechanics and physics of solids  
Arbitrary sets of slip systems can be considered. The coalescence criterion is assessed through comparisons to numerical limit analysis results performed using a Fast-Fourier-Transform based solver.  ...  isotropic materials.  ...  Tanguy for the careful reading of the manuscript.  ... 
doi:10.1016/j.jmps.2018.10.018 fatcat:2znz7zatfvgijc5ps6sfxeiuna

Magnetic resonance imaging for detection and analysis of mouse phenotypes

Brian J. Nieman, Nicholas A. Bock, Jonathon Bishop, X. Josette Chen, John G. Sled, Janet Rossant, R. Mark Henkelman
2005 NMR in Biomedicine  
Adaptation of magnetic resonance imaging (MRI) to the scale of the mouse promises to address this challenge and make major contributions to biomedical research by non-invasive assessment in the mouse.  ...  Challenges unique to mouse MRI are also identified.  ...  Brian Nieman is the recipient of a Canada Graduate Scholarship. Mark Henkelman is the recipient of a Canada Research Chair in Imaging.  ... 
doi:10.1002/nbm.981 pmid:16206127 fatcat:xym33bpwgfhnhk2q66yu6a6kri

Polarization of Femtosecond Laser for Titanium Alloy Nanopatterning Influences Osteoblastic Differentiation

Mathieu Maalouf, Alain Abou Khalil, Yoan Di Maio, Steve Papa, Xxx Sedao, Elisa Dalix, Sylvie Peyroche, Alain Guignandon, Virginie Dumas
2022 Nanomaterials  
We created, on polished titanium-6aluminum-4vanadium (Ti-6Al-4V) plates, a laser-induced periodic surface structure (LIPSS) using linear or azimuthal polarization of infrared beams to generate linear or  ...  Taken together, we identified that creating more isotropic than linear surfaces enhances cell differentiation, resulting in an improved osseointegration.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/nano12101619 pmid:35630841 pmcid:PMC9147489 fatcat:n7rjufgclndavder4rzaaq2qlq

Analysis of the effective thermal conductivity of isotropic and anisotropic Periodic Open Cellular Structures for the intensification of catalytic processes

Mauro Bracconi, Matteo Ambrosetti, Matteo Maestri, Gianpiero Groppi, Enrico Tronconi
2020 Chemical Engineering and Processing  
At constant solid fraction and cell size, these structures can improve the effective thermal conductivity of the solid matrix up to 40 % and 100 % for structures thickened in two or one direction respectively  ...  A correlation previously derived for the description of open cell foams shows an excellent agreement with the results of POCS structures.  ...  In fact, the simple geometry of this cell allows for a facile derivation of dedicated geometrical models useful for the generation of the virtual structure and for the analysis of the data.  ... 
doi:10.1016/j.cep.2020.108169 fatcat:cllmg6fdtff6ddlkg4vitcfo3e

A micron-scale surface topography design reducing cell adhesion to implanted materials

Francesco Robotti, Simone Bottan, Federica Fraschetti, Anna Mallone, Giovanni Pellegrini, Nicole Lindenblatt, Christoph Starck, Volkmar Falk, Dimos Poulikakos, Aldo Ferrari
2018 Scientific Reports  
progress of the cell cycle.  ...  which mediate the inflammatory response to foreign bodies.  ...  To decouple the effect of anti-adhesive topographies, a direct comparison was performed between flat biocellulose and corresponding substrates structured with the selected isotropic and quasi-isotropic  ... 
doi:10.1038/s41598-018-29167-2 pmid:30022037 pmcid:PMC6052105 fatcat:prsojofb4ffpnnep2ulzfjlkxm

Enhancing retinal images by extracting structural information

G. Molodij, E.N. Ribak, M. Glanc, G. Chenegros
2014 Optics Communications  
We were able to perform a precise shift-and-add at the sub-pixel level in order to resolve the structures of the size of single cells in the living human retina.  ...  The enhancement of images with poor contrast and the detection of faint structures require objective methods for assessing perceptual image quality.  ...  Acknowledgments We would like to thank Nizan Meitav for supplying us with the wide field-of-view images at the Technion.  ... 
doi:10.1016/j.optcom.2013.10.011 fatcat:a2shl2ux45ez7nokaghyiq5cry

A Guided Tour of Selected Image Processing and Analysis Methods for Fluorescence and Electron Microscopy

Charles Kervrann, Carlos Oscar Sanchez Sorzano, Scott T. Acton, Jean-Christophe Olivo-Marin, Michael Unser
2016 IEEE Journal on Selected Topics in Signal Processing  
In this area, image processing and analysis methods are now essential to understand the dynamic organization of groups of interacting molecules inside molecular machineries and to address issues in fundamental  ...  In this paper, we present recent advances in fluorescence and electron microscopy and we focus on dedicated image processing and analysis methods required to quantify phenotypes for a limited number but  ...  ACKNOWLEDGMENT The authors would like to thank the members of the Inria Serpico Project-Team and of the Bioimage Analysis unit (Institut Pasteur) for their inputs and contributions to some of the ideas  ... 
doi:10.1109/jstsp.2015.2505402 fatcat:fgbrxtuhsfbobluogllqll6q2e

Highlighting directional reflectance properties of retinal substructures from D-OCT images

Florence Rossant, Kate Grieve, Michel Paques
2019 IEEE Transactions on Biomedical Engineering  
In this paper, we present advanced image processing methods to perform differential analysis of a set of D-OCT images and extract the angle-dependent retinal substructures.  ...  Therefore, the intensities in the stack of images are not directly comparable, and a normalization step is required before differential analysis.  ...  ACKNOWLEDGMENT The authors would like to thank the medical team of the Clinical Investigation Center of the Quinze-Vingts hospital for doing the manual segmentations that enabled us to evaluate our image  ... 
doi:10.1109/tbme.2019.2900425 pmid:30794503 fatcat:x6fpmtfcxzggpob4p74k3bd4ua

Tomographic brain imaging with nucleolar detail and automatic cell counting

Simone E. Hieber, Christos Bikis, Anna Khimchenko, Gabriel Schweighauser, Jürgen Hench, Natalia Chicherova, Georg Schulz, Bert Müller
2016 Scientific Reports  
Moreover, we highlight that three-dimensional data allows for the segmentation of sub-cellular structures, including dendritic tree and Purkinje cell nucleoli, without dedicated staining.  ...  Since the discovery of cells, visual inspection has been a common investigation method for localisation and analysis purposes.  ...  The authors would also like to thank Hans Deyhle and Peter Thalmann for many helpful discussions and Beat Fasel for his support concerning the computational experiments on the Linux Cluster.  ... 
doi:10.1038/srep32156 pmid:27581254 pmcid:PMC5007499 fatcat:f3utyh62hzcfbjvlsmw7si5m3e

3D MRI of explanted sheep hearts with submillimeter isotropic spatial resolution: comparison between diffusion tensor and structure tensor imaging

Julie Magat, Valéry Ozenne, Nicolas Cedilnik, Jérôme Naulin, Kylian Haliot, Maxime Sermesant, Stephen H Gilbert, Mark Trew, Michel Haissaguerre, Bruno Quesson, Olivier Bernus
2021 Magnetic Resonance Materials in Physics, Biology and Medicine  
The aim of the study is to compare structure tensor imaging (STI) with diffusion tensor imaging (DTI) of the sheep heart (approximately the same size as the human heart).  ...  Tensor analysis, angles extraction and segments divisions were performed on both volumes. A 3D FLASH allows for visualization of the detailed structure of the left and right ventricles.  ...  Acknowledgements The authors thank Peter Ullmann, Johannes T Schneider and Simon Stark from Bruker for providing us a homemade RF design coil with seven elements and developing protocol to map and shim  ... 
doi:10.1007/s10334-021-00913-4 pmid:33638739 pmcid:PMC8421292 fatcat:tz2aj7jeevhwxfptor2vb4sidm

Towards Adaptive Grids for Atmospheric Boundary-Layer Simulations

J. Antoon van Hooft, Stéphane Popinet, Chiel C. van Heerwaarden, Steven J. A. van der Linden, Stephan R. de Roode, Bas J. H. van de Wiel
2018 Boundary-layer Meteorology  
However, the overall analysis shows that the method has a clear potential for numerical investigations of the most challenging atmospheric cases.  ...  We present a proof-of-concept for the adaptive mesh refinement method applied to atmospheric boundary-layer simulations.  ...  , and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.  ... 
doi:10.1007/s10546-018-0335-9 pmid:31258159 pmcid:PMC6560679 fatcat:226wrrnk5rer7kuavch4hlq4xe

Image Analysis & Stereology: 2017 Research Highlights

Tomaž Vrtovec
2018 Image Analysis and Stereology  
Most of the contributions are relatively interdisciplinary, however, they can be assigned to the following fields of study: computer vision (2), image analysis (2), materials science (3), medical imaging  ...  A detailed overview of the 22 contributions, published in volume 36 (2017) of Image Analysis & Stereology (IAS), is presented.  ...  However, by broader publicity, development of dedicated software and incorporation of (semi)automated image analysis techniques, in their opinion stereology will find its way to the plant biology community  ... 
doi:10.5566/ias.1916 fatcat:jlfwybzvojdlrmcroxbowosipq

Analysis of spatial relationships in three dimensions: tools for the study of nerve cell patterning

Stephen J Eglen, Dan D Lofgreen, Mary A Raven, Benjamin E Reese
2008 BMC Neuroscience  
Here we demonstrate the utility of our analysis methods to discriminate between two different simulated neuronal populations.  ...  Furthermore, in conjunction with analyses of dendritic morphology, they can be used to determine the degree of dendritic coverage within a volume of tissue exhibited by mature nerve cells.  ...  As well as informing us about developmental mechanisms, these methods can also be applied to adult tissue, as the spatial distribution of neurons can help assess the number of natural cell types in a structure  ... 
doi:10.1186/1471-2202-9-68 pmid:18644136 pmcid:PMC2491625 fatcat:cwwqfgbndbgjhgxaftml3p47pq
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