However, the dam's construction forever altered the Yangtze River ecosystem and the lives of local residents. This case was developed for use in the first semester of a sophomore organic chemistry laboratory to illustrate how a combination of techniques is usually required in the identification of chemical compounds. The discovery of a bacterium capable of substituting arsenic for phosphorus in its DNA was announced with much fanfare in 2010.
It was immediately and very publicly critiqued by researchers posting their analyses of the paper on their blogs. In this dilemma case, the central character, a museum curator, must decide whether or not to show a painting as a hitherto “undiscovered” Cezanne.
Many analytical tools could be used, but in this case study we focus on infrared spectroscopy and our knowledge of the chemistry of waxes and scents.
Fourier Transform Infrared Chemical Imaging is a technique that that provides wavelength-specific, high resolution infrared images and the underlying spectral data used to determine chemical differences in a sample.
In this case study, students play the role of a NASA scientist tasked with analyzing samples of atmosphere and soil collected on Mars as part of the Mars Curiosity Mission.
The case study takes place in the future when samples of the Martian atmosphere... Invented by Edward Kasner, an American mathematician who popularized the number in his 1940 book, Mathematics and the Imagination, it is a 1 followed by a hundred zeros.The infant was diagnosed with pneumonia and given an intravenous dose of the antibiotic azithromycin, the...This clinical case study was developed to engage students by making connections between core concepts in chemistry and physiological processes in the body. Users should expect a reply within 24 hours of submission during the working week or the next business day if submitted on a weekend.This case was developed for use in the first weeks of a course in order to show students how participating in active learning exercises in their classes can benefit them.As the business climate improves, many companies who utilize outside analytical services start to wonder if it makes more sense to bring the capability in-house.This white paper describes the pros and cons of such a move — and, more importantly, points out hidden costs may make this choice more complicated than originally thought.Proper sample packaging can mean the difference between a successful or a failed analysis.In techniques that analyze small areas or are used to determine trace chemical composition, packaging that appears innocuous can contribute as much material as was present initially.This case study describes the application of a variety of microscopy techniques to examine a failed motorcycle suspension to determine the root cause of the failure.Outwardly the appearance of a spark plug has not changed—but internally there have been many improvements.