Klartext handlar i dag om att den svenska regeringen har föreslagit att vi ska skicka stridsflygplan till kriget i det afrikanska landet Libyen. Och på fredagen godkändes det förslaget av riksdagen. Du hör även om att en svenska dödats i Elfenbenskusten i Afrika, om en ny droglag och om varför vi luras på första april.
A retrospective look at space shuttle Endeavour.
From unemployed to entrepreneur
Exasperation leads to inspiration for one man who was laid off twice before starting his own internet company.
This site is a wonderful resource for undergraduate researchers and their mentors. Topics covered include research nuts and bolts, funding your science, scientific ethics, lab safety, communicating your science and mentoring issues. The site makes good use of case studies, self-study questions and references on each topic.
Teaching Chemical Equilibrium Concepts Using Field-Lab Experiences
This online article describes an inquiry-based experience designed to integrate concepts in water quality and geology for pre-education science students preparing to become teachers at the primary and secondary level. The field and laboratory exercise could be used to effectively introduce equilibrium chemistry in an introductory or environmental chemistry course, and courses for non-majors.
Introduction to Scanning Probe Microscopy
This learning module teaches the principles behind scanning tunneling microscopy and atomic force microscopy. The module includes example applications and ample literature citations.
Chromatography and Mass Spec Lectures
This site contains mass spectrometry and chromatography lecture notes for a graduate course. They are subdivided by topic (history, theory, etc.) and are easy to browse. They may be helpful to someone constructing their own course in chromatography and/or mass spectrometry. The notes are fairly complete. The historical sections may particularly save time in preparing courses. The notes also provide good information and a helpful outline to follow. The site also has some nice mass spectrometr
Animation of GC solvent focusing
This site has very good animations related to separations. It deals specifically with solvent focusing in gas 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 also listed on ASDL.
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.
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.
Tunable Monochromator Movie
This Quick Time movie illustrates and describes to operation of a Czerny-Turner monochromator. The slits, mirrors, grating and grating scan are described in the production of a specific wavelength at the outlet slit. The movie is a companion to the double beam spectrometer animation.
RSC.org: Proton NMR
This video, distributed on YouTube by the Royal Society of Chemistry is on the basic principles of NMR. This video is a good primer and would be very useful to supplement introductory lectures on NMR. The video covers the basic theory behind a 1H spectrum and goes through actually acquiring a spectrum. The top-off look of the instrument is useful and how the superconducting magnet is mounted. Good for a basic introduction.
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.
This article by Peter Griffiths, published in the ABCs of Teaching Analytical Science series of the journal Analytical and Bioanalytical Chemistry, will be of interest to faculty members teaching analytical or quantitative analysis courses to chemistry, biochemistry, pre-health or natural science majors. Drawing from a survey of colleges and universities in the western United States, Griffiths summarizes how the quantitative analysis course is currently being taught, highlighting difference
Atomic Spectroscopy in a Project-Based Lab
An article published in the \"ABCs of Teaching Analytical Science\" series of the journal Analytical and Bioanalytical Chemistry describes a project-based lab in which students investigate the distribution of Pb and As (from pesticides) in a contaminated apple orchard. Students have complete control of the lab, from designing a sampling strategy to using the primary literature to develop procedures for extracting the analytes and for their subsequent analysis by ICP-AES or ICP-MS.
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
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.
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
Accelerator Mass Spectrometry in Biology and Health Care
This video, developed at Lawrence Livermore National Laboratory, describes the instrumentation for accelerator mass spectrometry and its applications. The video describes the instrumentation and its application for carbon dating and measurements of drug distribution.
Fundamentals of NMR
This e-text presents an introduction to the fundamentals of NMR covering magnetic resonance, pulsed NMR, relaxation, chemical shift, spin-spin coupling, the nuclear Overhauser effect and chemical exchange.