Conductivity Estimation of Breast Cancer Using COMSOL® Modeling of Microwave Scattering and Frechet Mean Estimate of Covariance - new
A. Jeremic, E. Khoshrowshahli
Electrical & Computer Engineering, McMaster University, Hamilton, ON, Canada
Biomedical Engineering, McMaster University, Hamilton, ON, Canada
Breast cancer detection is one of the most important problems in health care and it is second most frequent cancer according to WHO. It is recommended that women over fifty or even younger in some cases do a screening test every two years. Besides clinical breast examination, there are number of imaging methods used for this purpose, such as mammography, ultrasound and MRI. Among them, ...
Laser Interstitial Thermo Therapy (LITT) for Prostate Cancer Animal Model: Numerical Simulation of Temperature and Damage Distribution
M.F. Marqa, P. Colin, P. Nevoux, S. Mordon, and N. Betrouni
University of Lille, CHRU, Lille, France
Laser interstitial thermotherapy (LITT) is a cancer treatment technique in which laser fibers are introduced inside the tumor. While it destroys deep tumors, the LITT procedure allows minimizing the impact on adjacent healthy structures. One of the effective methods to perform treatment planning for LITT is simulation. We used COMSOL Multiphysics to simulate the heat distribution and thermal ...
Evaluating Nanogaps in Ag and Au Nanoparticle Clusters for SERS Applications Using COMSOL Multiphysics®
R. Asapu , R. Ciocarlan , N. Claes , N. Blommaerts , S. Bals , P. Cool , S. Denys , S. Lenaerts , S. W. Verbruggen 
 Department of Bioscience Engineering, DuEL Research Group, University of Antwerp, Belgium
 Department of Chemistry, PLASMANT Research Group, University of Antwerp, Belgium
 Department of Physics, EMAT Research Group, University of Antwerp, Belgium
Silver and gold nanoparticles are widely used in the field of surface enhanced raman spectroscopy (SERS) because of the unique plasmonic properties. Plasmons or surface plasmon resonance result from the wavelength dependent dielectric properties of noble metals like Ag, Au, Pt etc., which give rise to enhanced near-electric field which is the primary reason for enhancement of Raman signal in ...
Search for a Suitable Numerical Model for Electrical Stimulation: from the Electric Double Layer to Electrokinetics, Confrontation with Impedance Measurements
P. Pham, R. Scapolan, C. Rubeck, and F. Dupont
CEA-LETI-MINATEC, Grenoble, France
Electrical Stimulation is widely used today for Deep Brain Stimulation treatments and retinal prostheses. The Electrical Double Layer formed at the interface between the electrode surface and the extracellular medium is considered thru the linear Helmholtz model and the nonlinear more realistic modified Poisson Boltzmann model. These different models, solved using COMSOL Multiphysics, are ...
Extending Engineering Simulations to Scientists: Food Safety and Quality Prediction Using COMSOL Multiphysics® and LiveLink™ for Excel®
A. Warning, A. K. Datta
Cornell University, Ithaca, NY, USA
The objective of this study was to develop an easy to use interface in Excel® that connects to not only the solvers in COMSOL Multiphysics®, but also existing databases of food properties, foodborne pathogenic microorganisms kinetics, and chemical kinetics, creating a comprehensive simulation software to predict food safety and quality. The user interface allows the user to select the food, ...
Computational Modeling of the Electrohydrodynamics Influencing Trace Mercury Adsorption within Electric Utility Electrostatic Precipitators
University of Michigan, Ann Arbor, MI, USA
Anthropogenic mercury (Hg) emissions increase the risk of neurological and neonatal health effects in humans through fish consumption. There are several technological approaches to controlling mercury emissions from coal combustion, including the injection of a powdered mercury sorbent into the flue gas upstream of the particulate control device (PCD). As most PCDs are electrostatic ...
Hemodynamic Therapy of Middle Cerebral Artery Vasospasm Guided by a Multiphase Model of Oxygen Transport
S. Conrad[1,2], P. Chittiboina, and B. Guthikonda
Department of Bioinformatics and Computational Biology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
Department of Biomedical Engineering, Louisiana Tech University, Ruston, LA, USA
Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport, LA, USA
Cerebral vasospasm is a complication of subarachnoid hemorrhage and other neurosurgical emergencies that reduce blood flow to the brain. Part of the approach to management of vasospasm is to improve flow through the stenotic areas by reducing by decreasing blood viscosity and enhancing flow through the stenosis. To examine the interaction of these factors, we applied computational fluid ...
V. Nicolas[1,2], J.P. Ploteau, P. Salagnac, P. Glouannec, V. Jury, and L. Boillereaux
Laboratoire d’Ingénierie des MATériaux de Bretagne – Equipe Thermique et Energétique, Université Européenne de Bretagne, Lorient Cedex, France
Laboratoire d’Etudes des Phénomènes de Transfert et de l’Instantanéité : Agro-industrie et Bâtiment, Université de La Rochelle, La Rochelle Cedex, France
Laboratoire de Génie des Procédés, Environnement, Agroalimentaire, ENITIAA, France
In this paper, we present a first model carried out with COMSOL Multiphysics to model bread baking, considering heat and mass transfer coupled with the phenomenon of swelling. This model predicts the pressures, temperatures and water contents evolutions in the dough for different energy requests. First results obtained are analyzed according to various physical parameters in order to better ...
A. Gerisch, S. Tiburtius, Q. Grimal, and K. Raum
Technische Universität Darmstadt, Darmstadt, Germany
Laboratoire d’Imagerie Paramétrique, UPMC, Paris, France
Julius Wolff Institut & Berlin-Brandenburg School for Regenerative Therapies, Charité-Universitätsmedizin Berlin, Berlin, Germany
Musculoskeletal mineralized tissues (MMTs), e.g. bone, are hierarchical composite materials. Their effective elastic properties at different scales are of interest for computational studies of the MMT’s response to mechanical loading but also to realistically simulate implant osseointegration. We combine multi-scale and multi-modal experimental techniques with mathematical modelling of MMTs ...
A Method for Efficient Calculation of Diffusion and Reactions of Lipophilic Compounds in Complex Cell Geometry
Kristian Dreij, Qasim Ali Chaudhry, Bengt Jernström, Ralf Morgenstern, and Michael Hanke
Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
School of Computer Science and Communication, Royal Institute of Technology, Stockholm, Sweden
A general description of effects of toxic compounds in mammalian cells is facing several problems. Firstly, most toxic compounds are hydrophobic and partition phenomena strongly influence their behaviour. Secondly, cells display considerable heterogeneity regarding the presence, activity and distribution of enzymes participating in the metabolism of foreign compounds i.e. bioactivation ...