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Physical Sciences and Mathematics Commons™
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Full-Text Articles in Physical Sciences and Mathematics
Addressing Learning Gaps In Acid-Base Chemistry Using Novel Three-Dimensional Models With Learning Module, Gabrielle Marie Grimes
Addressing Learning Gaps In Acid-Base Chemistry Using Novel Three-Dimensional Models With Learning Module, Gabrielle Marie Grimes
Theses and Dissertations
Teaching scientific concepts is very complex and includes the discussion and use of different models that support students’ understanding of particle-level interactions and behavior of chemical phenomena. The presented research describes the development of three-dimensional acid-base models and an accompanying learning module to support students’ understanding of the autoionization of water, acidic strength, pH, and Ka in aqueous acid-base chemistry. The model set includes acid and base models embedded with magnets and removable hydrogen atoms or hydroxide groups to model particle-level interactions. The magnetic models allow students to investigate particle-level processes with student-built models of aqueous acid and base systems. …
From General Chemistry To Anatomy And Physiology: Revalidating And Adapting Assessments And Models, Victoria Fisher
From General Chemistry To Anatomy And Physiology: Revalidating And Adapting Assessments And Models, Victoria Fisher
Theses and Dissertations
The 1980s saw an increasing demand for education standards that would create a scientifically literate society. In response, the American Association for the Advancement of Science (AAAS) published a report that outlined four themes that are characteristic of a scientifically literate individual: systems, models, constancy and change, and scale (1). In 1993, the AAAS published the Benchmarks for Science Literacy which outlined common scientific skills that a student should be able to demonstrate by grades 2, 5, 8, and 12 (2). Beyond the AAAS scale was not included in national science educational standards until 2012 when the National Research Council …
Persistence In Stem: Development Of A Persistence Model Integrating Self-Efficacy, Outcome Expectations And Performance In Chemistry Gateway Courses, Shalini Srinivasan
Persistence In Stem: Development Of A Persistence Model Integrating Self-Efficacy, Outcome Expectations And Performance In Chemistry Gateway Courses, Shalini Srinivasan
Theses and Dissertations
STEM persistence has been an important issue, especially in the context of underrepresented groups based on race and gender. Researchers in the last decade or so have been examining the powerful impact that affective and cognitive factors can exert individually on performance and persistence. It is only reasonable to hypothesize that combining affective and cognitive measures would offer a more thorough understanding of factors that impact students’ performance and STEM persistence. Evaluating these outcomes in the context of gateway courses is particularly essential due to the non-negligible percentage of students who drop out of these courses or decide to change …
Seasonal And Spatial Variations In Chemical Composition And Fluxes Of Dissolved Organic Matter And Nutrients In The Lower Milwaukee River, Tarek A. Teber
Seasonal And Spatial Variations In Chemical Composition And Fluxes Of Dissolved Organic Matter And Nutrients In The Lower Milwaukee River, Tarek A. Teber
Theses and Dissertations
Physical, chemical and biological processes directly influence the transport, composition, and fluxes of dissolved organic matter (DOM) in river watersheds. Changes in the abundance and composition of DOM and nutrients (P&N) in the watershed should reflect changes in hydrological cycle, effluent discharge, land-use and land-cover, and anthropogenic activities in the river basin, especially in rivers that run through metropolitan areas such as the Milwaukee River. Despite the importance of DOM to ecosystem health and function, a literature search to date finds no comprehensive accounting of DOM in the Milwaukee River. To examine DOM dynamics, monthly water samples were collected between …
The Function Of Renalase, Brett Allen Beaupre
The Function Of Renalase, Brett Allen Beaupre
Theses and Dissertations
Renalase was originally reported to be an enzyme secreted into the blood by the kidney to lower blood pressure and slow heart rate. Despite multiple reports claiming to confirm this activity in vivo there has been considerable discord in regards to the reaction catalyzed by renalase. The structural topology of renalase resembles that of known flavoprotein oxidases, monooxygenases and demethylases, but the conserved active site residues are unique to renalase. It has been reported that the catalytic function of renalase is to oxidize circulating catecholamines, however in vitro studies have failed to demonstrate a catalytic activity in the presence of …