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Ethnic Differences Among Maltreated Youths With Respect To Posttraumatic Stress Disorder And Related Symptoms, Amie Marie Lemos-Miller
Ethnic Differences Among Maltreated Youths With Respect To Posttraumatic Stress Disorder And Related Symptoms, Amie Marie Lemos-Miller
UNLV Retrospective Theses & Dissertations
Symptoms associated with the development and maintenance of Posttraumatic Stress Disorder (PTSD) were examined in a diverse group of maltreated adolescents. The first hypothesis was that levels of PTSD symptomatology, depression, dissociation, anger, and maladaptive cognitions were expected to significantly differ among African-American, Caucasian, Hispanic, and Multiracial adolescents. The second hypothesis was that ethnicity was expected to significantly moderate a relationship between (1) severity of PTSD as measured by symptomatology, and (2) the expression of related symptoms (i.e., depression, dissociation, anger, and maladaptive cognitions). Regarding hypothesis one, African-Americans reported less depressive symptoms overall than other ethnic groups, with Caucasians and …
Residual Stress Characterization And Defects Analyses By Microscopy, Subhra Bandyopadhyay
Residual Stress Characterization And Defects Analyses By Microscopy, Subhra Bandyopadhyay
UNLV Retrospective Theses & Dissertations
The structural material to contain the spallation target during transmutation of spent nuclear fuel (SNF) may develop internal stresses resulting from forming operations including plastic deformation and welDing Techniques such as pair-production, activation and life-time analysis based on classical positron annihilation spectroscopy (PAS) have been used to characterize residual stresses in candidate structural materials subjected to cold-reduction, plastic deformation and welDing Since the PAS techniques can only provide qualitative evaluation of residual stress, calibration curves were developed to estimate the resultant residual stress as a function of PAS line-shape parameters. Since plastic deformation can lead to the generation of defects …
Changes In The Stress Tolerance Of Two Mojave Desert Perennial Shrubs After Eight Years Of Growth In Elevated Carbon Dioxide, Allison Louise Ebbets
Changes In The Stress Tolerance Of Two Mojave Desert Perennial Shrubs After Eight Years Of Growth In Elevated Carbon Dioxide, Allison Louise Ebbets
UNLV Retrospective Theses & Dissertations
Global climate change is a significant issue facing modern society. Potential changes include increased atmospheric CO2 concentrations, increased temperature, altered precipitation patterns, and increased nitrogen deposition. The Nevada Desert FACE (Free Air Carbon dioxide Enrichment) Facility (NDFF) examines the effects of increased atmospheric CO2 concentration in an arid ecosystem. The effects of elevated CO2 on plants include increased growth rates and stress tolerance. This study examined the mechanistic changes in drought tolerance of two dominant Mojave Desert shrubs ( Larrea tridentata and Ambrosia dumosa) grown in elevated (550 mumol mol-1) or ambient (380 mumol mol -1) CO2 concentrations. Previous studies …