'Impedance measurements' presentation slideshows

Lens as an Osmotic Pump, a Bidomain Model. DOI: 10.13140/RG.2.2.25046.80966

The lens of the eye has no blood vessels to interfere with vision. The lens is far too large for diffusion to provide food and clear wastes. Experimental, theoretical and computational work has shown that the lens supports its own microcirculation. It is an osmotic pump that implements what physiologists have long believed u201cConvection provides what diffusion cannot.u201d We introduce a general (non-electro-neutral) model that describes the steady-state relationships among ion fluxes, water flow and electric field inside cells, and in the narrow extracellular spaces within the lens. Using asymptotic analysis, we derive a simplified model exploiting the numerical values of physiological parameters. The model reduces to first generation u2018circuitu2019 models and shows the basis of computer simulations too large to easily understand. The full model helps resolve paradoxes that have perplexed molecular biologists: crucial physiological properties do not depend as expected on the permeability of the lens interior (to water flow).

556 views • 55 slides

2016 Chamonix Workshop

2016 Chamonix Workshop. Main outcomes from 2015 for LIU-SPS, and outlook. B . Goddard, E . Shaposhnikova , on behalf of the full LIU-SPS team. Outline. Scope Recall of target parameters, performance limitations and LIU baseline solutions Key 2015 progress Beam studies and simulation

526 views • 38 slides

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE

429 views • 26 slides

306 views • 18 slides

Calorimeter Impedance Study

Calorimeter Impedance Study. K. A. Barger, M. A. Lindeman, and L. E. Rocks. Designing a Rocket payload to study the diffuse X-ray Background in the Galactic ISM. This rocket will travel to the upper atmosphere of Earth and collect data for ~5min

248 views • 16 slides

Project Update

Project Update. 04/17/2014. Stoichiometry by Positioning. To test the deposition characteristics of the chamber, a long sample was placed in the chamber and analyzed at several positions Best results are obtained when the sample is closest to the center of the chamber. .

231 views • 11 slides

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE

238 views • 10 slides

MD on nominal collimator settings

MD on nominal collimator settings R.W. Assmann , R. Bruce, F. Burkart , M. Cauchi , D. Deboy , L. Lari , E. Metral , N. Mounet , S. Redaelli , A. Rossi, B. Salvant , G. Valentino, D. Wollmann. Motivation and goal. Presently running with relaxed collimator settings

191 views • 6 slides