World TB Day Tuberculosis in the 21st Century: Payam Nahid
Payam Nahid, M.D., Associate Professor at the University of California San Francisco, counteracts the stigma of TB as an ancient disease and addresses the reason why the disease is prevalent in the present.
Cell Phone Spectrophotometer
Instructions and software are provided to allow students to build an inexpensive spectrophotometer, using digital cameras or cell phone cameras as array detectors. Supplementary materials include instructions for high school teachers and laboratory instructions for both high school and college students. Software source code allows customization.
Active Learning in Advanced Analytical Chemistry, a course for first year graduate students
The introductory lecture course for graduate-level analytical chemistry is commonly understood to require students to be broadly aware of analytical tools, current problems, and methods for linking problems and measurements. This article describes an active learning approach to this course, using review articles to focus discussion and reveal gaps in student knowledge. Students give most of the course\'s lectures, with grades based on lectures, exams, and a term paper.
Animation of sample loop HPLC injections
This site deals specifically with sample loop injections in liquid chromatography. The animations are short (one to two minutes) and can easily be shown in class as part of a lecture. They are extremely helpful in illustrating key components and concepts of chromatographic systems. Users are encouraged to explore the site and the other brief animations as well. Separate links to other simulations by the same company (TRSL) are listed below.
Quantitative Spectroscopic Calibration
Spectroscopic calibration is the process of using mathematical calculations to relate spectroscopic measurements to chemical composition. Several algorithms can be used to perform these calculations. Success depends on selecting a suitable set of calibration samples to train the system, using the correct algorithm to match the characteristics of the measured data, and properly evaluating and validating the calibration model developed. Various aspects of calibrating spectroscopic instruments
Introduction to Dynodes
This site is presented as a guided exploration into the operation of a photomultiplier from the first light incidence to the output signal. Questions guide the exploration and allow (sometimes require)the student to speculate on the result before going forward. A careful, patient student will get a thorough introduction to the operation of a dynode and how to bias it.
Quantitative NMR
A learning module focused on principles and practice of NMR for quantitative analysis, an application less commonly associated with the technique than is structure determination. Links to simulation packages are included.
A Primer on Scanning Tunneling Microscopy (STM)
A video primer on STM by Prof. R. Reifenberger, Purdue University Nanotech Center. A thorough discussion of fundamentals followed by the technical barriers and implementations - excellent graphics illustrating principles and experimental results. Historical context is provided making presentation interesting. Should be viewed by anyone interested in surface analysis at atomic dimensions.
Tales of the Riverbank
This environmental PBL unit can be downloaded as a set of pdf\'s that include materials for students and an instructor\'s guide. These materials present a compelling environmental problem and analytical data that allow students to be educated as they work through the various tasks associated with identifying potential pollutants responsible for the reduction in fish within the Coley River. In addition, to providing the data necessary to solve the problem, the authors provide simple analytical sk
Solid State NMR
This website introduces both theoretical and experimental solid state NMR. The subject matter is covered thoroughly. The material is presented with numerous examples that are easy to follow, regardless of one\'s background. The subject matter is extremely well organized and a pleasure to read.
Cooperative Learning Structures
This website is an invaluable resource on cooperative learning. The site provides information on a number of cooperative learning techniques such as jigsaw, think-pair-share, etc. that faculty who are interested in active learning will find invaluable.
RCSB Protein Data Base
This website is an "Information Portal To Biological Macromolecular Structure". It is a protein data bank that contains a very large structural database in addition to providing a variety of tools and resources for studying the structure of biological macromolecules and their relationships to sequence, function and disease. A good starting point is to take the tutorial which explains how to use the site and its contents. This site contains meritorious information on biological macromolecules an
X-ray Diffraction
This site is a good freshman or sophomore level introduction to diffraction and its application to studying crystal structure. Because it\'s very visual and interactive, it engages the student. It\'s not mathematical enough for an upper level course. The basics of diffraction are covered with excellent interactive demos. Demos are great as a supplement but not as a stand alone module on diffraction.
Fourier Transform
An overview of the Fourier theorem as applied to analytical measurements is given. The Discrete Fourier Transform and the Fast Fourier Transform algorithms are mentioned, and sampling requirements are discussed. Links are provided to descriptions of Fourier transform based mass spectrometry, infrared spectroscopy and NMR techniques.
Micro- and Nano Technology, 1st Int'l Symp 2004
Technologies developed at Oak Ridge National Laboratory include: 1) use of nanoprobes based on plasmon-resonance (which is defined) to enhance surface Raman scattering and fluorescence; 2) an optical neurosensor based on a 40 nm fiber optical tip; and 3) a multifunctional biochip capable of DNA and other protein-based bioassays. The article is written in PDF format with several illustrative graphics. Although insufficient in details to duplicate experimentally, the article does provide a nice ov
NMR animation
This site has very nicely animated tutorials on NMR with sufficient depth to be useful to the non NMR savy. The animations are accompanied by short descriptions so that the processes displayed can be understood by the viewer. This site goes beyond just showing precession. There are nice animations showing the effect of different pulses, including composite pulses on the magnetization, the effects of magnetic gradient pulses to measure diffusion and do coherence pathway selection. Other aspects a
Go with the Energy Flow
Students learn about energy and nutrient flow in various biosphere climates and environments. They learn about herbivores, carnivores, omnivores, food chains and food webs, seeing the interdependence between producers, consumers and decomposers. Students are introduced to the roles of the hydrologic (water), carbon, and nitrogen cycles in sustaining the worlds' ecosystems so living organisms survive. This lesson is part of a series of six lessons in which students use their growing understanding
IR Helper
JCAMP formatted spectra and javascript are used to lead the user through the analysis of IR spectra. The software asks the user a series of questions about the spectrum, and provides correction if the user answers incorrectly.
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9 Notes to help you complete your assessment To complete your portfolio, you must include a contents page indicating how your reflective commentary in Part A and your evidence in Part B are related. Figure 1 (PDF, 1 page, 0.1MB) Although the requirements of Parts A and B are listed separately, you should think of them as parts of a whole in which each part relates to the others. Parts A and B together must show that you can plan strat
