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Quin~ones, Rosalynn; Moreno, Sara; Shoup, Deben; Klein, Mieke; Westfall, Tamara D.; Damai, Aakriti – Journal of Chemical Education, 2021
With the advancements in broad-spectrum sunscreens and the recent bans on benzene-based sunscreens due to their environmental toxicity, there has been a push toward broad-spectrum sunscreens containing in organic active ingredients. In this study, a procedure was developed to analyze the particle size and size distribution of inorganic active…
Descriptors: Radiation, Safety, Hazardous Materials, Chemistry
Zhao, Yanlu; Lim, Minyoung; Choi, Sungmoon; Yu, Junhua – Journal of Biological Education, 2022
The attractive photophysical properties of luminescent nanoparticles have prompted numerous studies on their synthesis and biological applications. Due to the complexity of components, sizes, morphologies, and strong light scattering of the nanoparticles the absorption spectrum alone is not enough for characterising and analysing the real…
Descriptors: Spectroscopy, Cytology, Light, Science Instruction
Chng, J. J. Kenneth; Patuwo, Michael Yudistira – Journal of Chemical Education, 2021
We described and ran a lesson plan for a build-your-own visible-range spectrophotometer undergraduate project as inspired by the research of Bougot-Robin, Imperial College London. Students were required to improve a basic Raspberry Pi spectrophotometer design and evaluate their improvements. Students learned firsthand how to manage instrumental…
Descriptors: Lesson Plans, Chemistry, Science Instruction, Spectroscopy
Rudolph, Alexander L. – Astronomy Education Review, 2013
The increasing use of interactive learning [IL] strategies in Astro 101 classrooms has led some instructors to consider the usefulness of a textbook in such classes. These strategies provide students a learning modality very different from the traditional lecture supplemented by reading a textbook and homework and raise the question of whether the…
Descriptors: Science Instruction, Astronomy, Textbooks, Teaching Methods
Christensen, Warren; Johnson, James K.; Van Ness, Grace R.; Mylott, Elliot; Dunlap, Justin C.; Anderson, Elizabeth A.; Widenhorn, Ralf – CBE - Life Sciences Education, 2013
Undergraduate educational settings often struggle to provide students with authentic biologically or medically relevant situations and problems that simultaneously improve their understanding of physics. Through exercises and laboratory activities developed in an elective Physics in Biomedicine course for upper-level biology or pre-health majors…
Descriptors: Physics, Majors (Students), Student Attitudes, Surgery
Virji-Babul, N.; Cheung, T.; Weeks, D.; Herdman, A. T.; Cheyne, D. – Journal of Intellectual Disability Research, 2007
Background: This preliminary study served as a pilot for an ongoing analysis of spectral power in adults with Down syndrome (DS) using a 151 channel whole head magnetoencephalography (MEG). The present study is the first step for examining and comparing cortical responses during spontaneous and task related activity in DS. Method: Cortical…
Descriptors: Down Syndrome, Motion, Brain, Brain Hemisphere Functions