Simulation and validation studies of a large drift tube Muon Tracker

Cosmic ray muons are massive, charged particles created from high energy cosmic rays colliding with atomic nuclei in Earth’s atmosphere. Because of their high momenta and weak interaction, these muons can penetrate through large thicknesses of dense material before being absorbed, making them ideal for nondestructive imaging of objects composed of high-Z elements. A Giant Muon Tracker with two horizontal 8 × 6 in.2 and two vertical 6 × 6 in.2 modules of drift tubes was used to measure muon tracks passing through samples placed inside the detector volume. The experimental results were used to validate a Monte Carlo simulation of the Giant Muon Tracker. The imaging results of simulated samples were reconstructed and compared with those from the experiment, which showed excellent agreement

MEETING CONSUMERS' EXPECTATIONS FOR QUALITY AND SAFETY OF PORK PRODUCTS (PowerPoint Presentation)

POWERPOINT PRESENTATIO

MEETING CONSUMERS' EXPECTATIONS FOR QUALITY AND SAFETY OF PORK PRODUCTS (PowerPoint Presentation)

Food Consumption/Nutrition/Food Safety, Livestock Production/Industries,

Survival analysis of 97 cats with nasal lymphoma: a multi-institutional retrospective study (1986-2006)

BACKGROUND: Feline nasal lymphoma (NLSA) is a condition for which no standard of care exists. HYPOTHESIS: There is no difference in survival times of cats with NLSA treated with single or multimodality therapy. ANIMALS: Records from 97 cats diagnosed with NLSA were examined. METHODS: The purpose of this retrospective study was to compare the survival times of cats with NLSA treated with radiation therapy (RT) alone, chemotherapy alone, or RT + chemotherapy and identify potential prognostic variables that affected survival. Cats were grouped according to therapy: RT + chemotherapy (n = 60), RT alone (n = 19), or chemotherapy alone (n = 18). RESULTS: Survival was calculated with 2 methods. The 1st survival analysis (method A) included all cats, but counted only deaths caused by progressive NLSA. The median survival time (MST), regardless of therapy modality, was 536 days. The 2nd survival analysis (method B) also included all cats and counted all deaths, regardless of cause, as events. The overall MST calculated for all deaths was 172 days. A negative independent prognostic variable identified was anemia (P \u3c .001), and positive independent prognostic variables were a complete response to therapy (P \u3c .001) and total radiation dose \u3e32 Gy (P= .03). CONCLUSIONS AND CLINICAL IMPORTANCE: There were no significant differences in survival times among the 3 treatment groups but these results suggest that the addition of higher doses of RT to a cat\u27s treatment protocol may control local disease and therefore influence survival