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Cohen, Bruce H. – Developmental Disabilities Research Reviews, 2010
The vast majority of energy necessary for cellular function is produced in mitochondria. Free-radical production and apoptosis are other critical mitochondrial functions. The complex structure, electrochemical properties of the inner mitochondrial membrane (IMM), and genetic control from both mitochondrial DNA (mtDNA) and nuclear DNA (nDNA) are…
Descriptors: Genetics, Genetic Disorders, Drug Therapy, Molecular Structure
Rahayu, Sri; Treagust, David F.; Chandrasegaran, A. L.; Kita, Masakazu; Ibnu, Suhadi – Research in Science & Technological Education, 2011
Background and purpose: This study investigated Indonesian and Japanese senior high-school students' understanding of electrochemistry concepts. Sample: The questionnaire was administered to 244 Indonesian and 189 Japanese public senior high-school students. Design and methods: An 18-item multiple-choice questionnaire relating to five conceptual…
Descriptors: Chemistry, Concept Formation, Foreign Countries, Comparative Analysis
Hawkins, Ian; Phelps, Amy J. – Chemistry Education Research and Practice, 2013
The use of virtual laboratories has become an increasing issue regarding science laboratories due to the increasing cost of hands-on laboratories, and the increase in distance education. Recent studies have looked at the use of virtual tools for laboratory to be used as supplements to the regular hands-on laboratories but many virtual tools have…
Descriptors: Science Laboratories, Simulated Environment, Computer Simulation, Educational Technology
Long, S. R.; Browning, S. R.; Lagowski, J. J. – Journal of Chemical Education, 2008
The electrochemical synthesis of transition-metal acetylacetonates described here can form the basis of assisting in the transformation of an entry-level laboratory course into a research-like environment where all members of a class are working on the same problem, but where each member has a personal responsibility for the synthesis and…
Descriptors: Chemistry, Science Experiments, Science Instruction, Problem Solving
Chang, Hasok – Science & Education, 2011
I advance some novel arguments for the use of historical experiments in science education. After distinguishing three different types of historical experiments and their general purposes, I define "complementary experiments", which can recover lost scientific knowledge and extend what has been recovered. Complementary experiments can help science…
Descriptors: Science History, Scientific Principles, Chemistry, Science Education
Yuruk, Nejla – Journal of Science Education and Technology, 2007
The aim of this study was to investigate the effectiveness of instruction supplemented by conceptual change texts (CCTs) over traditional instruction on students' understanding of electrochemical (galvanic and electrolytic) cell concepts. The participants of the study consisted of 64 students from the two classes of a high school located in…
Descriptors: Experimental Groups, Control Groups, Multiple Choice Tests, Chemistry
Velazquez-Jimenez, Litza Halla; Torres-Rodriguez, Luz Maria; Garcia-de la Cruz, Ramon Fernando; Montes-Rojas, Antonio; Lopez-Arteaga, Rafael Eduardo – Journal of Chemical Education, 2010
An electrochemical experiment is presented to illustrate biosorption to second-year and upper-division undergraduate students. The extraction of Cd[superscript 2+], Pb[superscript 2+], and Cu[superscript 2+] by nonliving "Typha latifolia" (cattail) roots can be monitored in real time by potentiometry determinations. The open circuit potential…
Descriptors: Undergraduate Students, Plants (Botany), Hazardous Materials, Metallurgy
King, David; Friend, Jeffrey; Kariuki, James – Journal of Chemical Education, 2010
A pencil lead successfully served as an electrode for the determination of ascorbic acid in commercial orange juice. Cyclic voltammetry was used as an electrochemical probe to measure the current produced from the oxidation of ascorbic acid with a variety of electrodes. The data demonstrate that the less expensive pencil lead electrode gives…
Descriptors: Chemistry, Foreign Countries, Food, Scientific Concepts
Bonicamp, Judith M.; Clark, Roy W. – Journal of Chemical Education, 2007
Short circuiting an electrochemical cell is an unreported but persistent error in the electrochemistry textbooks. It is suggested that diagrams depicting a cell delivering usable current to a load be postponed, the theory of open-circuit galvanic cells is explained, the voltages from the tables of standard reduction potentials is calculated and…
Descriptors: Textbooks, Chemistry, Visual Aids, Textbook Content
Russo, D.; Fagan, R. D.; Hesjedal, T. – IEEE Transactions on Education, 2011
The University of Waterloo, Waterloo, ON, Canada, is home to North America's first undergraduate program in nanotechnology. As part of the Nanotechnology Engineering degree program, a scanning probe microscopy (SPM)-based laboratory has been developed for students in their fourth year. The one-term laboratory course "Nanoprobing and…
Descriptors: Chemistry, Engineering, Foreign Countries, Laboratory Experiments
Saricayir, Hakan; Uce, Musa; Koca, Atif – Journal of Chemical Education, 2010
This experiment employs current technology to enhance and extend existing lab content. The basic principles of spectroscopic and electroanalytical techniques and their use in determining material properties are covered in some detail in many undergraduate chemistry programs. However, there are limited examples of laboratory experiments with in…
Descriptors: Chemistry, Laboratory Experiments, Spectroscopy, Undergraduate Students
Bard, Allen J. – Journal of Chemical Education, 2007
The drooping mercury electrode (DME) was previously used to carry out electrochemical experiments but invention of polarography technique changed this. Voltammetry with DME was given the term polarography and are used in measurement of current as a function of potential at small electrodes.
Descriptors: Chemistry, Science History, Science Equipment, Laboratory Equipment
Xie, Qingji; Li, Zhili; Deng, Chunyan; Liu, Meiling; Zhang, Youyu; Ma, Ming; Xia, Shaoxi; Xiao, Xiaoming; Yin, Dulin; Yao, Shouzhuo – Journal of Chemical Education, 2007
A real-time, labeled-free and nanogram-sensitive mass sensor, electrochemical quartz crystal microbalance (EQCM) is used to monitor a cyclic voltammetric deposition of polyaniline (PANI). The results determined that the efficiency for PANI deposition and the anion-doping ratio is calculated in one single cyclic voltammetric.
Descriptors: Chemistry, Laboratory Experiments, College Science, Science Instruction
Diaz-Ruiz, Oscar; Zhang, YaJun; Shan, Lufei; Malik, Nasir; Hoffman, Alexander F.; Ladenheim, Bruce; Cadet, Jean Lud; Lupica, Carl R.; Tagliaferro, Adriana; Brusco, Alicia; Backman, Cristina M. – Learning & Memory, 2012
In the present study, we analyzed mice with a targeted deletion of [beta]-catenin in DA neurons (DA-[beta]cat KO mice) to address the functional significance of this molecule in the shaping of synaptic responses associated with motor learning and following exposure to drugs of abuse. Relative to controls, DA-[beta]cat KO mice showed significant…
Descriptors: Animals, Career Development, Memory, Cognitive Processes
Ivey, Michelle M.; Smith, Eugene T. – Journal of Chemical Education, 2008
In this demonstration, the students use their knowledge of electrochemistry to determine that tarnish can be removed from silverware by electrochemically converting it back to silver using items commonly available in the kitchen: aluminum foil and baking soda. In addition to using this system as an example of a galvanic cell, an electrolytic cell…
Descriptors: Chemistry, Science Instruction, Experiments, Science Activities