Spectroscopic observation of a catalyst surface in a reactive atmosphere at high pressure

Article Abstract:

Heterogeneous catalysis can be analysed spectroscopically by arranging the catalyst sample as a photocathode ionization detector and then measuring the ionization using X-ray absorption spectroscopy. This spectroscopic method is usable at the one-atmosphere pressures usual for heterogeneous catalytic reactions, unlike other spectroscopic techniques that must be performed in a zero-pressure vacuum. X-ray absorption spectroscopy has great promise as a facilitator of research into heterogeneous catalysis and other interfacial fields.

Heterogeneous catalysis, X-ray spectroscopy, Absorption spectra, Photocathodes

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Dodecamer repeat expansion in cystatin B gene in progressive myoclonus epilepsy

Article Abstract:

The Unverricht-Lundborg (EPM1; MIM 254800) type of progressive myoclonus epilepsy is common in Finland and the western Mediterranean. It is an autosomal recessive disorder. Mutations in the cystatin B (CSTB) gene show that it is responsible for the disorder. Of 58 unrelated EPM1 alleles studied in the CSTB gene, only 14% were mutations. Most of EPM1 alleles contained two or three dodecamer repeat expansions while the mutations had over 60 of the repeats.

Health aspects, Gene mutations, Gene mutation, Epilepsy, Genetic disorders

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Chiral discrimination by chemical force microscopy

Article Abstract:

Chirality is important in pharmacology and there is interest in methods that distinguish between different chiral forms of a compound. Chemical force microscopy combines chemical discrimination with atomic force microscopy, and has been used to study hydrophobic and hydrophilic interactions, and binding between biotin and streptavidin and DNA bases. Chemical force microscopy has been used to discriminate between chiral molecules.

Chirality, Chemical microscopy

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