Keyword: «bio-contamination»

INVESTIGATION OF THE MICROBIOLOGICAL LANDSCAPE FROM THE SURFACES OF PCMS IN THE CLIMATIC CONDITIONS OF YAKUTSK

Authors:

L. Erofeevskaya,

Elena Dalbaeva,

A. Kichkin,

Afanasii Dyakonov,

Anastasiya Saltikova

The article examines the biodegradation of polymer composites (glass, carbon, and basalt plastics) by bacteria, mold fungi, and their consortia at various temperatures, humidity, and exposure time. The biological contamination was assessed using microscopy, and structural changes were revealed: the formation of new functional groups and the cleavage of polymer chains caused by climatic aging and biodegradation.

Keywords: polymer composite materials, mold fungi, bacteria, biodegradation, bio-contamination, microscopy

THE INFLUENCE OF DEPOSITION AND STORAGE CONDITIONS ON THE PROPERTIES OF THE MAMMOTH TUSK MAMMUTHUS PRIMIGENIUS

Authors:

Evgeniya Petyhova,

Tatyana Isakova,

Tyskyl Solovev,

Gleb Botvin,

Vyacheslav Petrov,

Aleksandr Chirikov,

B. Platonov ,

Anastasiya Argynova,

L. Erofeevskaya

This article presents the results of a study on the properties of mammoth tusks (Mammuthus primigenius) after exposure to various conditions simulating natural and artificial environmental factors. It has been shown that storage conditions have a significant impact on the infection of tissues by microorganisms. It was established that the physicomechanical properties depend on the moisture content of the tusk tissues. The characteristics of cracking are determined by the ambient temperature, the influence of wind, and microorganisms present in the environment. Keyword:

Keywords: mammoth tusk, storage conditions, cracking, bio-contamination, physicomechanical properties