Small-angle x-ray scatter imaging has a high intrinsic contrast in cancer research and other applications, and provides information on molecular composition and micro-structure of the tissue. In general, the implementations of small-angle coherent scatter imaging can be divided into two main categories: direct tomography and angular dispersive computerized tomography. Based on the recent develo...

Current microwave hyperthermia applicators are not well suited for uniform heating of large tissue regions. The objective of this research is to identify an optimal microwave antenna array for clinical use in hyperthermia treatment of cancer. For this aim we present a novel 434MHz applicator design based on a metamaterial zeroth order mode resonator, which is used to build larger array configur...

In this paper, we describe a new direction in the advancement of dense-array EEG technology. It is generally accepted that three-dimensional spatial analysis of EEG via electric head models requires accurate representation of both head geometry and head tissue conductivity. Anatomical information can be obtained from structural MRI. At present, however, most researchers still take conductivity ...

A fast photoacoustic (PA) imaging system, based on a 320-transducer linear array, was developed and tested on a tissue phantom. To reconstruct a test tomographic image, 64 time-domain PA signals were acquired from a tissue phantom with embedded light-absorption targets. A signal acquisition was accomplished by utilizing 11 phase-controlled sub-arrays, each consisting of four transducers. The re...

BACKGROUND In worms, as in other organisms, many tissue-specific promoters are sequestered at the nuclear periphery when repressed and shift inward when activated. It has remained unresolved, however, whether the association of facultative heterochromatin with the nuclear periphery, or its release, has functional relevance for cell or tissue integrity. RESULTS Using ablation of the unique lam...

Partial shading reduces the power output of solar modules, generates several peak points in P-V and I-V curves and shortens the expected life cycle of inverters and solar panels. Electrical array reconfiguration of PV arrays that is based on changing the electrical connections with switching devices, can be used as a practical solution to prevent such problems. Valuable studies have been perfor...

This project considers the problem of trying to selectively sense and induce activity in individual neurons within a network in a living organism, using a small array of electrodes placed some distance away. We consider a variety of approaches to relate neural behavior to the potential or current at the electrode array. Then we perform a simulation using the simple linear model with uniform con...

This work describes a novel transparent micro-needle array for photodynamic therapy (PDT) applications. This micro-needle array, with 250 um in height and 35 um in diameter, was placed onto skin and penetrated the cuticle yet not reaching the corium layer, so as to avoid pain and bleeding but achieve superior light transmission efficiency. For PDT applications, this design can significantly red...

MOTIVATION Data from one-channel cDNA microarray studies may exhibit poor reproducibility due to spatial heterogeneity, non-linear array-to-array variation and problems in correcting for background. Uncorrected, these phenomena can give rise to misleading conclusions. RESULTS Spatial heterogeneity may be corrected using two-dimensional loess smoothing (Colantuoni et al., 2002). Non-linear bet...