This article describes the concept of graphene and metamaterial, their possible structure, principle of operation, properties, basic technologies, as well as the possibility of using these materials in industry. The relevance of modern materials in the future is revealed and the main events in the history of the development of this type of materials are indicated.

Observations of the epidemiological process of meningococcal infection over the past 10 years on the scale of a large city and its districts made it possible to note a decrease and subsequent stabilization of the incidence; to identify differences in the course of the epidemiological process in the city districts characterized by population migration, social, demographic and other characteristics. In addition to other epidemiological features inherent in the period of decline in incidence, changes in the pathogenic properties of pathogens were found. It is recommended, along with other markers of bacteriological surveillance of meningococcal infection, to use the assessment of the cytopathogenicity of the latter by their effect on the cell culture.

Dialkylester der phosphorigen Säure (I) und dialkyl‐ bzw. diphenylphosphinige Säure (IV) lagern Brenztraubensäure (II) oder Benzoylameisensäure (VI) an unter Bildung der phosphorylierten Hydroxycarbonsäuren (III), (V) bzw. (VII).

DOI: http://dx.doi.org/10.5564/mjc.v13i0.155 Mongolian Journal of Chemistry Vol.13 2012: 23-27