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de la Vega-Herna´ndez, Karen; Antuch, Manuel – Journal of Chemical Education, 2015
A vectorial representation of the full sequence of events occurring during the 2D-NMR heteronuclear single-quantum correlation (HSQC) experiment is presented. The proposed vectorial representation conveys an understanding of the magnetization evolution during the HSQC pulse sequence for those who have little or no quantum mechanical background.…
Descriptors: Correlation, Quantum Mechanics, Science Experiments, Magnets
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van Duuren, Esther; Nieto Escamez, Francisco A.; Joosten, Ruud N. J. M. A.; Visser, Rein; Mulder, Antonius B.; Pennartz, Cyriel M. A. – Learning & Memory, 2007
The orbitofrontal cortex (OBFc) has been suggested to code the motivational value of environmental stimuli and to use this information for the flexible guidance of goal-directed behavior. To examine whether information regarding reward prediction is quantitatively represented in the rat OBFc, neural activity was recorded during an olfactory…
Descriptors: Stimuli, Rewards, Coding, Knowledge Representation
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Wilder, Anna; Brinkerhoff, Jonathan – Journal of Computers in Mathematics and Science Teaching, 2007
This study assessed the effectiveness of computer-based biomolecular visualization activities on the development of high school biology students' representational competence as a means of understanding and visualizing protein structure/function relationships. Also assessed were students' attitudes toward these activities. Sixty-nine students…
Descriptors: Visualization, Student Surveys, Participant Satisfaction, Performance Based Assessment