The purpose of the proposed phase i project is to demonstrate that a useful software interface can be constructed that is capable of faithfully converting normal computer-aided design (cad) output files into a format that is directly readable by the geant high energy physics detector simulation… More

A technique is proposed whereby energy-dispersive x-ray fluorescence analysis can be made to accurately measure small concentrations ( 1%) of an element in a sample whose composition is dominated (>90%) by an element of similar but larger atomic number (z). such measurement is now precluded by the… More

This phase i research will study the feasibility of constructing and implementing on a fast, powerful, and relatively inexpensive microcomputer an electron treatment planning (tp) algorithm that will permit full three-dimensional (3-d) calculations taking accurate account of body inhomogeneities.… More

We propose to develop the rudiments, in phase i, of a software shell that will allow teachers and others interested in scientific education to construct specific scientific "experiments" on personal computers. the shell will incorporate a graphical user interface, already developed in previous work,… More

We propose to investigate in phase i a volume-specific, limited-scan photon backscatter technique for the detection of localized changes in composition and/or thickness of a layer hidden under a surface layer, as a generic analogue ofthe hidden corrosion problem. features inherent in the… More

This research project seeks to develop a model for a local legislative tracking system for cancer control policies related to smoking. the model will address all aspects of an effective legislative tracking mechanism, including data sources, data collection, data storage, databse management, system… More

This project seeks to construct, test and prepare for a later clinical trial (by others), a flying-spot infra-red (ir) or near-ir transilluminator, which might have use as an adjunctive breast-cancer examination modality. the instrument differs from previous designs by this and other groups in that… More

The properties of closed or almost-closed surfaces with beta-emitting walls will be studied by means of powerful monte carlo transport models. possible use of the enclosures in delivering areally uniform surface doses to targets that are either within the enclosures or that are externally apposed to… More

Researchers are investigating the feasibility of measuring to very high resolution the locations of multiple components of known composition whose postitions are intended to conform to a well-defined pattern inside a structure. the technique depends on scanning photon beams across the structure… More

152 Development of an Object-Oriented Interface to an Enhanced EGS Monte Carlo Code--Quantum Research Services, Inc., 5410 Apex Highway, Suite W, Durham, NC 27713-9434; (919) 544-4952 Dr. A. M. Yacout, Principal Investigator Ms. Karen E. J. Dunn, Business Official DOE Grant No.… More

175 Development of the Integrated Physics Data Miner--Quantum Research Services, Inc., 5410 Apex Highway, Suite W, Durham, NC 27713-9434; (919) 544-4952 Dr. William L. Dunn, Principal Investigator Dr. Karen E.J. Dunn, Business Official DOE Grant No. DE-FG02-97ER82466 Amount: … More

50826-98-I Development of Fibre Channel Disk Clusters--Quantum Research Services, Inc., 5410-W Apex Highway, Durham, NC 27713-9434; (919) 544-4952 Dr. William L. Dunn, Principal Investigator Dr. Karen E. J. Dunn, Business Official DOE Grant No. DE-FG02-98ER82648 Amount: $75,000 The next… More

DESCRIPTION (provided by applicant): Physical principles of drop formation will be investigated for the highly controlled encapsulation of islets and other viable tissue. The goal is to produce capsules that have good biological capatibility, exclude cytotoxic antibodies,… More