Terminology for chain polymerization (IUPAC Recommendations 2021)

Abbreviated terminology of oligosaccharide chains. Recommendations 1980. IUB-IUPAC Joint Commission on Biochemical Nomenclature (JCBN).

Recommendations for terminology and databases for biochemical thermodynamics.

Chemical equations are normally written in terms of specific ionic and elemental species and balance atoms of elements and electric charge. However, in a biochemical context it is usually better to write them with ionic reactants expressed as totals of species in equilibrium with each other. This implies that atoms of elements assumed to be at fixed concentrations, such as hydrogen at a specifi...

Concept Systems and Ontologies: Recommendations for Basic Terminology.

This essay concerns the problems surrounding the use of the term "concept" in current ontology and terminology research. It is based on the constructive dialogue between realist ontology on the one hand and the world of formal standardization of health informatics on the other, but its conclusions are not restricted to the domain of medicine. The term "concept" is one of the most misused even i...

Further conventions for NMR shielding and chemical shifts IUPAC recommendations 2008.

IUPAC has published a number of recommendations regarding the reporting of nuclear magnetic resonance (NMR) data, especially chemical shifts. The most recent publication [Pure Appl. Chem. 73, 1795 (2001)] recommended that tetramethylsilane (TMS) serve as a universal reference for reporting the shifts of all nuclides, but it deferred recommendations for several aspects of this subject. This docu...

Nanowire connection using chain polymerization

We demonstrate that chain polymerization of molecules can be initiated by stimulating a thin molecular film with a scanning tunneling microscope (STM) tip, so that a conjugated polymer nanowire can be created at designated positions. The demonstration has been presented for a self-ordered monomolecular layer of diacetylene compound adsorbed on a graphite surface. By stimulating the molecular la...