This paper presents a methodology for glaucoma detection based on measuring displacements of blood vessels within the optic disc (vascular bundle) in human retinal images. The method consists of segmenting the region of the vascular bundle in an optic disc to set a reference point in the temporal side of the cup, determining the position of the centroids of the superior, inferior, and nasal vas...

BACKGROUND We examined whether sales of new motorcycles was a mechanism to explain the relationship between motorcycle fatalities and gasoline prices. METHODS The data came from the Motorcycle Industry Council, Energy Information Administration and Fatality Analysis Reporting System for 1984-2009. Autoregressive integrated moving average (ARIMA) regressions estimated the effect of inflation-a...

An extension of the stoichiometric displacement (SD) model for the ion-exchange adsorption of dilute proteins is developed which accounts for the effects of hydrogen ion Donnan equilibrium on the protein charge. The ability of the new model to fit retention data when the fluid phase pH is near the protein pI and the effects of hydrogen ion Donnan equilibrium are important is examined using four...

Objectives. This study, being part of a broader program that will cover the entire lumbar region of the human spine, aims at developing a fine partition, three-dimensional, finite element model of the L5/S1 intervertebral disk suitable for step-by-step calculation and video recording of the impacts of vibratory and shock loading that simulate conditions of whole body vibration, time-dependent m...

Introduction Phase contrast MRI which is commonly used to map blood [1]has been applied more recently to map gas velocities using hyperpolarized tracers[2, 3].The bipolar gradient used to induce a phase shift proportional to velocity also introduces diffusion weighting. This can be safely neglected considering diffusion coefficients of liquids. However, for a gas, diffusion can no longer be neg...

6 Visual DSD code for PI controller implementations 13 6.1 Chemical Reaction Network implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6.2 4Domain DNA Strand Displacement implementation . . . . . . . . . . . . . . . . . . . . . . . . . . 16 6.2.1 Initial Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.2.2 Reac...

Dynamic DNA nanotechnology often uses toehold-mediated strand displacement for controlling reaction kinetics. Although the dependence of strand displacement kinetics on toehold length has been experimentally characterized and phenomenologically modeled, detailed biophysical understanding has remained elusive. Here, we study strand displacement at multiple levels of detail, using an intuitive mo...