Environ Sci Technol
November 2023
Krypton chloride (KrCl*) excimer ultraviolet (UV) light may provide advantages for contaminant degradation compared to conventional low-pressure (LP) UV. Direct and indirect photolysis as well as UV/hydrogen peroxide-driven advanced oxidation (AOP) of two chemical contaminants were investigated in laboratory grade water (LGW) and treated secondary effluent (SE) for LPUV and filtered KrCl* excimer lamps emitting at 254 and 222 nm, respectively. Carbamazepine (CBZ) and -nitrosodimethylamine (NDMA) were chosen because of their unique molar absorption coefficient profiles, quantum yields (QYs) at 254 nm, and reaction rate constants with hydroxyl radical.
View Article and Find Full Text PDFSimulation is used with greater frequency by nursing programs to strengthen the learning process of student nurses. Best practices suggest active learning with the addition of standardized patients engages the student in realistic lifelike scenario. Therefore, the aim of the research study was to have nursing student's self-evaluate classroom learned communication skills through practical application on a standardized mental health patient simulated scenario.
View Article and Find Full Text PDFBackground: Research on simulation in nursing education has demonstrated the positive impact active, experiential learning has on student satisfaction, self-confidence, and knowledge. As a result, simulation laboratories with high-fidelity human patient simulators have become a common adjunct to clinical teaching. It is important to also promote active learning in the classroom setting; however, there is limited evidence on using video simulations in large classrooms.
View Article and Find Full Text PDFBackground: Undergraduate nursing programs continuously strive to improve student learning outcomes within the simulation lab experience. As a result, simulation labs are evaluating computer-based simulation programs to engage the millennial student learner.
Objective: Examine undergraduate nursing student perceptions and experiences when given a computer-based simulation program as a preparation prior to their simulated lab experience.
Proteins constitute a particularly bioavailable subset of organic carbon and nitrogen in aquatic environments but must be hydrolyzed by extracellular enzymes prior to being metabolized by microorganisms. Activities of extracellular peptidases (protein-degrading enzymes) have frequently been assayed in freshwater systems, but such studies have been limited to substrates for a single enzyme [leucyl aminopeptidase (Leu-AP)] out of more than 300 biochemically recognized peptidases. Here, we report kinetic measurements of extracellular hydrolysis of five substrates in 28 freshwater bodies in the Delaware Water Gap National Recreation Area in the Pocono Mountains (PA, United States) and near Knoxville (TN, United States), between 2013 and 2016.
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