This pair of pH calculation programs serves as an excellent tool for anyone wishing to calculate the pH of a solution containing multiple acids and bases. These programs allow practitioners to predict the pH of simple and complex acid/base solutions and buffers. Users are encouraged to carefully read the guides provided by the author.
Animations and Simulations in the Teaching of Analytical Sciences
This article by Cynthia Larive, published in the \"ABCs of Teaching Analytical Science\" series of the journal Analytical and Bioanalytical Chemistry, will be of interest to faculty members teaching courses in the analytical sciences. The article provides a good introduction to the animations, simulations, and other on-line resources available on the internet. More important, it encourages instructors to develop a teaching philosophy that emphasizes the use of these materials.
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.
Population Genetics and Statistics
This website is part of the President\'s DNA Initiative and is devoted to past and current methods of macromolecules such as DNA. This website introduces the student to the subject of population genetics and stresses factors that can alter allele frequencies in a population and calculations associated with the Hardy-Weinberg principle. The student will learn to use acceptable statistical approaches to evaluating DNA data and how DNA databases are constructed and applied. This site is designed as
Gas Chromatography Video
This is a high quality video module demonstrating the basics of gas chromatography. Highlights include different GC instruments, detectors etc., as well as unique topics such as trouble shooting and interfacing the column that are not addressed in standard texts. This resource can be run (Shockwave Flash) from the home server or downloaded to your computer.
NMR of Paramagnetic Proteins
This site presents an overview of techniques used for structural elucidation of paramagnetic metalloproteins. The content is directed to the more advanced NMR user and would be suitable for an upper division or graduate level NMR class.
This website provides resources that can aid in the interpretation of NMR proton shifts, identification of IR features and mass loss identification in mass spectrometry. The original site is in German, but most (but not all) the content is translated on the English version of the site. From the left hand menu under Spektroskopei-Tools choose Wizards. From here you can enter a chemical shift in ppm and the NMR tool will identify likely protons and environments that could cause the shift. Enter a
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
Handbook of Basic Atomic Spectroscopic Data
This National Institute of Standards and Technology (NIST)) site containing atomic spectroscopic reference data. Information can be accessed through a variety of means, such as an interactive periodic table and dropdown lists of elements organized by name or atomic number. Data available include isotope abundance, electron configuration, nuclear spin, magnetic moment, ionization energies, spectral line wavelengths and intensities, and energy level information. References are also given.
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.
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.
The site demonstrates principles behind the operation of the interferometer in an FTIR spectrometer. Graphics and interactive movies are used. Examples start from a single wavelength and build to the superposition of multiple wavelengths. The connection between an interferogram and a frequency domain spectrum is discussed.
Biosensors and Other Medical and Environmental Probes
This site links an article from the Oak Ridge Nat\'l Laboratory that reviews publications dealing with biosensors and their applications. Although limited to work from ORNL\'s scientists, it contains several examples of cutting-edge sensor devices with sufficient background information linking their use to real-world applications. The narrative is written more in a story-telling fashion than as a journal report that contributes to its readability. The descriptions and graphic illustrations co
Biological Animation Library
This site produced by the Dolan DNA Learning Center of the Cold Springs Harbor Laboratory contains a number of high quality animations that explain processes important in bioanalytical chemistry. For example, one animation illustrates the process of Sanger sequencing and another explains what Gene Chips are and how they work. PCR, gel electrophoresis, cloning, model organisms and stem cell lines are also treated. The site allows the animations to be viewed or downloaded for PC or Mac, which mean
VIs y funciones de bajo nivel para File I/O
En este módulo, se aprenderá a usar los VIs y funciones de bajo nivel para la entrada/salida con ficheros.
Hoofdluis : Hoekenwerk met ganzenbord Hoekenwerk met zeven verschillende opdrachten over luizen, zoals het maken van een mindmap, opdrachten bij een filmpje, het spelen van een elektrospel met aangepaste vragen.
Hoekenwerk met zeven verschillende opdrachten over luizen, zoals het maken van een mindmap, opdrachten bij een filmpje, het spelen van een elektrospel met aangepaste vragen.
Money talks: April 4th 2011
In this week's programme - goings on at Berkshire Hathaway, the ECB tightens interest rates and the latest on exchange mergers
242 GG "Like" Versus "Such As"
Learn when to use "like" and when to use "such as." Find out why "like" should be used for comparisons and "such as' should be used for examples and how to use commas with "such as." The Grammar Girl print book is now available on Amazon.com! http://tinyurl.com/2pkej7