World TB Day Tuberculosis in the 21st Century: Christy Hanson
Christy Hanson, Ph.D., Chief of the Infectious Disease Division, USAID, talks about the role of the USAID in fighting tuberculosis around the world.
World TB Day Tuberculosis in the 21st Century: David Rochkind
David Rochkind, photojournalist and Pulitzer Center grantee, features his photos and personal stories from people in South Africa, India and Moldova with TB.
Migrants stranded on Italian island
Strong winds and rough seas prevent ships deployed by the Italian government from docking at the island of Lampedusa, halting efforts to clear the island of thousands of North African migrants.
Nasdaq, ICE go after NYSE
Summary of business headlines: Nasdaq OMX, ICE offer $11.3 billion for NYSE Euronext; U.S. job growth near one-year high; Gas prices slow U.S. auto sales; Wall Street continues rally.
Kinetic Capillary Electrophoresis(KCE): A conceptual Platform for Kinetic Homogeneous Affinity Metho
Kinetic Capillary Electrophoresis is a family of methods for studying binding of biopolymers, measuring rate constants, binding constants, and in some cases providing mechanistic details. This annimation illustrates several kinetic CE modes and their effect on the complex formation and dissociation.
Animation of pulse dampner in HPLC
This animation site deals specifically with pulse dampners is LC and could help in a general lecture about LC pumps. 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 also listed on ASDL.
GC Electron Capture Detector Animation
This site is one in a series of sites with very good animations related to separations. This animation deals specifically with electron capture detectors. 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) a
Applications Searchable Site
This site is a search engine for chromatographic and mass spectral methods in the Waters Corporation database. It searches based on analyte. It pulls up refereed journals(citations only) and company literature (pdf format). The site claims 23,500 documents. The site will be useful to those looking for methods in chromatography, including faculty and students looking for project ideas for either research or laboratory experiments.
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
Light sources - Technical Information
This is a commercial site with some detailed information included with product announcements. The discussion of light collection is an exceptional introduction to matching optical elements with maximum throughput. There are also illustrative spectra of typical sources and descriptions of laws of radiation and radiation units.
Theme-Based Modular Approach for Delivering the Undergraduate Analytical Curriculum
This paper from the ABCs of Teaching Analytical Science in the journal Analytical and Bioanalytical Chemistry describes the modifications to the analytical curriculum at Butler University. The laboratory associated with the course in Quantitative Analysis was retooled to include a series of projects emphasizing report-writing, data reduction/analysis, method development, method comparison, and a guided-inquiry capstone project. The laboratory for Instrumental Analysis is a semester-long module
Experiments in Electroanalytical Chemistry
This website offers educators a set of eight classical electroanalytical experiments suitable for use in a quantitative analysis, instrumental analysis, or electrochemistry course. The materials should be useful for advanced undergraduates and beginning graduate students. Experiments include coulometric, conductometric, and potentiometric titrations, stripping analysis, flow injection analysis, and polarography. It is important to note that several of the experiments use mercury or mercury co
LabVIEW for Instrumental Analysis
This site provides two useful resources for instructors and students of analytical chemistry. The first is a collection of LabVIEW virtual instruments (VIs) for demonstrating topics such as signal-to-noise ratios, boxcar and ensemble averaging, power spectra, digital filtering, analog-to-digital conversions, and the Nyquest frequency. For users that do not have a working copy of LabVIEW, executable versions are included that use LabVIEW\'s free run-time engine (Windows only). The second set of r
Laboratory Orientation and Testing of Body Fluids and Tissues for Forensic Analysts
This web site is part of the President\'s DNA Initiative and is devoted to an overview of historical and contemporary techniques to characterize body tissues. The first part of the course covers basic laboratory procedures, safety requirements for laboratory personnel and emphasizes quality control and quality assurance in the laboratory. The second section deals with serological techniques for characterizing specimens such as saliva, semen, blood and urine Identification and individual utilizin
Gas Chromatography experiment
This site provides a Word document that describes a GC experiment involving the separation and quantitation of four butyl alcohol isomers. It has a complete background about the components of a GC instrument (with labeled pictures) and their functions. It has a section devoted to the measurement of response factors of the detector in use (here an FID). This would be a good experiment for a new faculty member to use as is, with slight modification to make it relevant to the particular GC syste
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.
Animated Vibrational Modes of Triatomic Molecules
Molecular vibration modes are discussed using animation to depict atomic motion. As examples, the fundamental vibrational modes and their composite superposition are demonstrated for sulfur dioxide and carbon dioxide. A brief overview of the approach for calculating molecular vibrational modes is included with references to basic literature on the topic. Atomic motion resulting from the superposition of fundamental modes is discussed in relation to effects of molecular vibrations on reactivity.
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
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
CASE TEACHING NOTES for Filthy Lucre
The website presents a case study involving the detection of cocaine on dollar bills. The case study uses GC-MS, but has an introduction appropriate for beginning chemistry students.