Methanogenic Archaea and oral infections — ways to unravel the black box

Archaea, organisms that make up the third domain of cellular life are members of the human oral microflora. They are strikingly less diverse than oral bacteria and appear to be relatively rare with respect to their numerical abundance. Since they have been exclusively found in association with oral infections such as periodontitis and apical periodontitis and given their unique physiology and energy metabolism, it is highly plausible that they are more than just secondary colonizers of infected areas, but instead are actively involved in the overall poly-microbial infection process. Conversely, it is a highly challenging task to clearly demonstrate their possible active participation – mostly due to the difficulty to grow them in routine microbiology laboratories. This current review points out the importance for understanding the medical impact of methanogens and aims at devising strategies for elucidating the true function of archaea in the oral ecosystem

Анализ применения криогелей для укрепления грунтов в условиях Крайнего Севера

Объектом исследования являются способы закрепления грунта. Цель работы - анализ применения криогеля для укрепления грунта. В магистерской диссертации рассмотрены прочностные характеристики криогелей. Рассмотрена технология применения криогеля для закрепления грунта. Проанализирована предварительно построенная компьютерная модель напряженно-деформированная состояния трубопровода при осадке грунта с применением криогеля и без него и сделаны выводы по перспективе применения криогеля.The object of the study ways of fixing of soil. The purpose of the study is to analyze the operational features and effectiveness of use of cryogel for soil strengthening. In the master thesis strength characteristics of cryogels are considered.The technology of use of cryogel for soil fixing is considered. Previously constructed computer model deformed conditions of the intense pipeline at soil draft with use of cryogel and without him is analysed and conclusions on the prospect of use of cryogel are drawn

Устойчивое водопотребление и геоэкологическая безопасность (на примере Западной Сибири)

Представлены результаты многолетних исследований факторов, определяющих состояние водных ресурсов, и тенденции изменения качества природных вод. Охарактеризованы элементы концепции обеспечения геоэкологической безопасности хозяйственно-питьевого водопотребления в Западной Сибири. Она учитывает естественно-природные (ландшафтно-климатические, гидрогеологические, экологические и др.), техногенные (эмиссия загрязняющих веществ, гидротехнические сооружения, добыча энергоресурсов и др.) и социально-экономические (уровень урбанизации, финансовое обеспечение и др.) факторы.The article deals with long-term studies of factors determining the state of water resources, and trends in the quality of natural water. The concept of providing geoecological safety of domestic and drinking water consumption in Western Siberia is described. It takes into account the natural (landscapeclimatic, hydro-geological, ecological, etc.), technogenic (emission of pollutants, hydraulic structures, extraction of energy resources, etc.) and socio-economic (level of urbanization, financial provision, etc.) factors

Mentoring in students' adaptation to labor market requirements

The article contains the analyzes of the problems of youth employment, the development of mentoring in Russia. The ways of their joint decision are proposed with the purpose of acquiring production experience, professional self-realization and increasing the competitiveness of future specialists