This protocol describes an analytical platform for the analysis of intra- and extracellular metabolites of microbial cells (yeast, filamentous fungi and bacteria) using gas chromatography–mass ...

Ambient ionization complements chromatographic workflows, offering rapid chemical composition snapshots and aiding in sample analysis. Chip Cody discusses his work in mass spectrometry, including DART ...

Aristotle’s postulate that “nature abhors a vacuum” could be used to explain why X-ray photoelectron spectroscopy (XPS) has not found routine application in the analysis of biological samples. The ...

Regression imputation is commonly used to compensate for item nonresponse when auxiliary data are available. It is common practice to compute survey estimators by treating imputed values as observed ...

A number of methods have been available in industrial microscopy for measuring the materials in a sample. This article discusses the similarities and differences of three specific methods: phase ...

Tim Smith has 20+ years of experience in the financial services industry, both as a writer and as a trader. Amanda Jackson has expertise in personal finance, investing, and social services. She is a ...

MENLO PARK (CBS SF) -- An analysis of hamburger meat sold in stores and restaurants in Northern California found some samples with traces of human and rat DNA, along with some substituted ingredients ...