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Displaying 1176 - 1200 of 1612

A new model of pulse oximetry: Two-dimensional pulsation

March 14, 2007
Author(s)
Shao Yang, Paul B. Batchelder, Dena M. Raley
We developed a two-dimensional pulsation model of pulse oximetry. Instead of a one-dimensional single layer as in the conventional theory, the arteries pulsate in two dimensions taking into account the effect of probing light that does not pass through the

The Stiffness of Collagen Fibrils Influences Vascular Smooth Muscle Cell Phenotype

March 1, 2007
Author(s)
Dennis P. McDaniel, Gordon A. Shaw, John T. Elliott, Kiran Bhadriraju, Curtis W. Meuse, Koo-Hyun Chung, Anne L. Plant
Cells receive signals from the extracellular matrix through receptor-dependent interactions, but they are also influenced by the mechanical properties of the matrix. While bulk properties of substrates have been shown to effect cell behavior, we show here

Counter-Flow Gradient Electrofocusing

February 1, 2007
Author(s)
Jonathan G. Shackman, David J. Ross
Counter-flow gradient electrofocusing methods are methods whereby a combination of electrophoresis and a bulk solution counter-flow is used to accumulate or focus analytes at stationary points along a separation column. This review first describes the

Characterization and Control of Lipid Layer Fluidity in Hybrid Bilayer Membranes

January 31, 2007
Author(s)
Neil A. Anderson, Lee J. Richter, John C. Stephenson, Kimberly A. Briggman
The main gel-to-liquid-crystal (LC) phase transition temperature, Tm, of the distal lipid layer in hybrid bilayer membranes (HBMs) under water was investigated using vibrational sum frequency spectroscopy (VSFS). VSFS has unique sensitivity to order

Cell Morphology and Migration Linked to Substrate Rigidity

January 1, 2007
Author(s)
Yong Ni, Martin Chiang
A mathematical model, based on thermodynamics, was developed to demonstrate the substrate mechanics influences the cell morphology and migration. The mechanisms by which substrate rigidity are translated into cell morphological changes and cell movement

Analysis of potential cancer biomarkers in mitochondrial DNA

December 1, 2006
Author(s)
J P. Jakupciak, G. D. Dakubo, Samantha D. Maragh, R. L. Parr
Understanding mitochondrial biology is a fundamental research goal in human genetics and medicine. The use of mitochondria to serve as a biomarker is rapidly expanding in disciplines ranging from cancer, rare metabolic diseases, aging, the tracing of human
Displaying 1176 - 1200 of 1612
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