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An active microbial assemblage cycles sulfur in a sulfate-rich, ancient marine brine beneath Taylor Glacier, an outlet glacier of the East Antarctic Ice Sheet, with Fe(III) serving as the terminal electron acceptor. Isotopic measurements of sulfate, water, carbonate, and ferrous iron and functional gene analyses of adenosine 5'-phosphosulfate reductase(More)
No differences were seen in performance on either verbosequential or visuospatial neuropsychological tests among three groups of women. There were also no differences among the phases of the menstrual cycle on any of the tests. The design of this study was to sample performance of women on verbosequential and visuospatial neuropsychological tests during(More)
Follicle Stimulating Hormone (FSH) levels were negatively correlated with visuospatial function in two successive testing sessions in 32 young adult men. Men with high concentrations of FSH performed poorly on three-dimensional tests and tests of point localization. Men with low concentrations tended to perform better. Luteinizing Hormone (LH) tended to(More)
This study examined how specific domains of cultural orientation (language, social affiliation, and cultural pride) related to self-esteem for a sample of 174 Chinese American male and 179 Chinese American female college students. Participants completed measures of cultural orientation (General Ethnicity Questionnaire; J.L. Tsai, Y.W. Ying, & P.A. Lee,(More)
Based on Antonovsky's salutogenic model, the authors hypothesized that sense of coherence would mediate the effects of parent and peer attachment and college challenges on depressive symptoms as well as moderate the relationship between college challenges and depressive symptoms in Chinese Americans. To test our hypotheses, 353 Chinese American college(More)
The Ross Sea is home to some of the largest phytoplankton blooms in the Southern Ocean. Primary production in this system has previously been shown to be iron limited in the summer and periodically iron and vitamin B(12) colimited. In this study, we examined trace metal limitation of biological activity in the Ross Sea in the austral spring and considered(More)
Nine gonadotropin-deficient hypopituitary men were cycled through periods of treatment with testosterone (T), gonadotropin (Gn), and placebo (Pl) using a blind cross-over design. Self-reports of sexual behavior, recordings of nocturnal penile tumescence (NPT), and sex steroid levels were obtained during each treatment period. Subjects had significantly(More)
Increase of follicle stimulating hormone (FSH) and luteinizing hormone (LH) in men by injection of luteinizing hormone releasing hormone (LHRH) prevented improvement in a spatial orientation test relative to a placebo condition. By contrast, performance on a fluency task was significantly increased after LHRH injection relative to the placebo condition.(More)