Solution to best food reference material challenge

Solution to phenylbutazone purity challenge.

In the last 15 years NMR has become a reference technique for the determination of purity for organic standards containing NMR active nuclei [1, 2]. The puzzle proposed for this Analytical Challenge was focused on the use of 1H-NMR for the characterization of a phenylbutazone standard. Such material was purchased from Sigma-Aldrich and analyzed in parallel by HPLC-UV and 1H-NMR. Initially, appl...

Solution to spectroscopy challenge 8.

Malic acid was first isolated by Carl Wilhelm Scheele from apple juice in 1785. Scheele was born in 1742 in Stralsund. The German seaport of Stralsund is situated on the southern coast of a sound of the Baltic Sea that separates the island of Rügen from the mainland. This small town remained under Swedish control until 1815, when it became a part of the Prussian Province of Pomerania. Thus, Sch...

Solution to half-titration challenge.

Disseminating the Best Material to Practitioners

The Mission First, this department’s mission is to disseminate the best material that’s relevant to software practitioners. This mission is straightforward, but not always easily accomplished. Many other IEEE Software departments attract great, practitioneroriented articles. We don’t aim to overlap with them and the regular focus and feature articles; rather, we seek niche, even emerging topics...

How to Best Sample a Solution Manifold?

Model reduction attempts to guarantee a desired “model quality”, e.g. given in terms of accuracy requirements, with as small a model size as possible. This article highlights some recent developments concerning this issue for the so called Reduced Basis Method (RBM) for models based on parameter dependent families of PDEs. In this context the key task is to sample the solution manifold at judic...