University of North Carolina at Wilmington

About: University of North Carolina at Wilmington is a education organization based out in Wilmington, North Carolina, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 3329 authors who have published 6797 publications receiving 186308 citations.

Eukaryotic genome size databases

Abstract: Three independent databases of eukaryotic genome size information have been launched or re-released in updated form since 2005: the Plant DNA C-values Database (www.kew.org/genomesize/homepage.html), the Animal Genome Size Database (www.genomesize.com) and the Fungal Genome Size Database (www.zbi.ee/fungal-genomesize/). In total, these databases provide freely accessible genome size data for >10 000 species of eukaryotes assembled from more than 50 years' worth of literature. Such data are of significant importance to the genomics and broader scientific community as fundamental features of genome structure, for genomics-based comparative biodiversity studies, and as direct estimators of the cost of complete sequencing programs.

The concept map as a research and evaluation tool: Further evidence of validity

Abstract: This study sought further evidence of the concurrent validity of concept mapping as a research and evaluation tool in science education Specifically, the study examined the extent to which differences exist in the concept maps of advanced college biology majors (N = 25) and beginning nonmajors (N = 25) in the domain of mammals Furthermore, it explored whether these differences are reflected in the way subjects assign class membership as revealed in a card sorting task The results indicate that concept maps of biology majors are structurally more complex than those of nonmajors and that differences in the structural complexity and organizational patterns depicted in concept maps are reflected in the underlying dimensions used to assign class membership Together, these findings suggest that the concept map provides a theoretically powerful and psychometrically sound tool for assessing conceptual change in experimental and classroom settings

Hedges and Safe Havens: An Examination of Stocks, Bonds, Gold, Oil and Exchange Rates

Abstract: In this paper we investigate the return relations between major asset classes using data from both the US and the UK. Our first objective is to examine time variation in conditional correlations to determine when these variables act as a hedge against each other. Secondly, we provide evidence on whether the dependencies between the asset classes differ during extreme price movements by using quantile regressions. This analysis provides evidence on whether these asset classes can be considered as safe havens for each other. A noteworthy finding of our study is that gold can be regarded as a safe haven against exchange rates in both countries, highlighting its monetary asset role

Differential gene expression during thermal stress and bleaching in the Caribbean coral Montastraea faveolata.

Abstract: The declining health of coral reefs worldwide is likely to intensify in response to continued anthropogenic disturbance from coastal development, pollution, and climate change. In response to these stresses, reef-building corals may exhibit bleaching, which marks the breakdown in symbiosis between coral and zooxanthellae. Mass coral bleaching due to elevated water temperature can devastate coral reefs on a large geographical scale. In order to understand the molecular and cellular basis of bleaching in corals, we have measured gene expression changes associated with thermal stress and bleaching using a complementary DNA microarray containing 1310 genes of the Caribbean coral Montastraea faveolata. In a first experiment, we identified differentially expressed genes by comparing experimentally bleached M. faveolata fragments to control non-heat-stressed fragments. In a second experiment, we identified differentially expressed genes during a time course experiment with four time points across 9 days. Results suggest that thermal stress and bleaching in M. faveolata affect the following processes: oxidative stress, Ca2+ homeostasis, cytoskeletal organization, cell death, calcification, metabolism, protein synthesis, heat shock protein activity, and transposon activity. These results represent the first medium-scale transcriptomic study focused on revealing the cellular foundation of thermal stress-induced coral bleaching. We postulate that oxidative stress in thermal-stressed corals causes a disruption of Ca2+ homeostasis, which in turn leads to cytoskeletal and cell adhesion changes,