Neutron Diffraction Utilizing the T-O-F Method

The Eff iciency o f Acute Infect ion o f CD 4 + T cells Is

Human immunodeficiency virus (HIV) disease is sub-Saharan Africa generally differs from that observed in the United States and other developed countries in that the risk of seroconversion after exposure is greater and the rate of disease progression to AIDS and death is faster. One theory that could in part explain this difference is the increased state of immune activation associated with a re...

o f CD 4 Lineage T Cells

Thymocytes must bind major histocompatibility complex (MHC) proteins on thymic epithelial cells in order to mature into either CD8 + cytotoxic T cells or CD4 + helper T cells. Thymic precursors express both CD8 and CD4, and it has been suggested that the intracellular signals generated by CD8 or CD4 binding to class I or II M H C , respectively, might influence the fate o f uncommitted cells. H...

Neutron Diffraction Experiments

This ISEN award supported research toward improving the energy efficiency of actuators. The focused research objective was to develop next-generation shape memory alloy (SMA) models and structures, to demonstrate this new technology in targeted near-term applications on airplanes. Two research avenues were pursued to enable development of this new technology: 1) neutron diffraction experiments ...

Biological Neutron Diffraction

Structure of the Molten 37 a/o Cu-63 a/o Sb Alloy Using the Isotopic Substitution Method in Neutron Diffraction

A neutron diffraction study o f the eutectic Cu-Sb-melt containing 37 a/o Cu has been performed using isotopically enriched samples. The three partial structure factors describing the Cu-Cu, Cu-Sb, and Sb-Sb correlations have been determined as well as a second set of partial structure factors relating to the distance correlation o f fluctuations in number density and concentration. Unsmoothed ...