The Residence Time Distribution (RTD) technique combined with mass spectroscopic Residual Gas Analysis (RGA) is employed, for the first time, to study the nature of nonideal gas flow in atmospheric thermal silicon oxidation reactors. The RTD results are inter reted in terms of various dispersion models. Hi [er flow rates improve plug flow conditions by recfucing the Dispersion Number, D. In cases where baffles are not used upstream of the wafers, the Finite Length System (FLS) model agrees most closely with the experimental data due the presence of macroscopic variations in Row caused by the entering gas jet. When baffles are present, the Semi-Infinite Length System (SILS) model is shown t o apply. Increasing the number of baffles and the longitudinal location results in lower D. The trends are explained theoretically by determining the extent of natural convection which has been shown t o be the major obstacle towards achieving plug flow conditions in thermal silicon oxidation reactors.
The purpose of this study was to identify risk factors associated with homelessness, assess the relationship between housing status and consumption of costly publicly funded resources, to identify characteristics associated with service retention, and to evaluate whether length of treatment is associated with better outcomes. The Overall, patients who remained enrolled in services from Year 1 to Year 3 had improved housing stability, fewer days of incarceration, and required less staff support. The overrepresentation of African Americans among patients who experienced homelessness suggests that racism could be a factor contributing to homelessness for this racial group.Further research is needed to assess the relationship between race and homelessness.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.