Tony (A.M.C.) Davies looks at Multiple Linear Regression (MLR) this issue, as well as expressing his opinions about Principal Components Regression (PCR) and Partial Least-Squares (PLS).
With Pittcon and Analytica so close together this year, we have combined our reports to bring the very latest new spectroscopy product introductions from both sides of the Atlantic. Any evident trends were broadly similar to last year, with continued development in the miniaturisation of instrumentation, whether the end result is palm-sized or “luggable”. The areas of imaging and Raman spectroscopy (and sometimes both combined) produced a comparatively large number of introductions. As always, our apologies to any companies that we may have missed; we are always happy to try and include your new products in the section of that name.
Mathieu Duval raises the question “Dating fossil teeth by electron paramagnetic resonance: how is that possible?”. Whilst we are all familiar with 14C dating, the use of EPR is less well known. In fact, there are less than 10 laboratories in the world able to carry out EPR dating of fossil teeth!
“From lake ecology to biofuels—applications of Fourier transform infrared spectroscopy to algal research” is the topic of Andrew Dean, Jon Pittman and David Sigee. Algae are essential for our continued live on Earth, and FT-IR spectroscopy can increase our understanding of their physiology and biotech potential.
Curtis Marcott, Tadashi Awatani, Jiping Ye, David Gerrard, Michael Lo and Kevin Kjoller give us a “Review of nanoscale infrared spectroscopy applications to energy related materials”. Fuel cells, photovoltaics and specialised polymers for fracking are all considered.
With continuing food scares around the world, food producers need every tool they can get to prevent contamination of their products at every stage of production. Hyperspectral reflectance imaging in the NIR combined with chemometrics shows much promise for the detection and identification of foreign bodies among food grains.
This article describes an application of spectral imaging for the differentiation of tumour and normal cells. The authors also introduce the concept of a spectral barcode, which has had success with some tissues and has potential in others.
- The impact of water pollution with chromium and nickel to the food chain
- The last furlong (3). Principal component analysis
- Fourier transform infrared spectroscopic imaging of live cells
- Highlighting the importance of utilising the polarisation properties of resonance Raman scattering in obtaining molecular information
Page 9 of 27
- Infrared spectroscopy as a tool to study plant cuticles
- Dates and fates of pyrogenic carbon: using spectroscopy to understand a “missing” global carbon sink
- Solid mixed matrices and their advantages in matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry
- The analytical niche for Raman spectroscopy in biological pigment research
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