This article presents the data from an analysis of the epidemiological situation on the incidence of syphilis in the Republic of Sakha (Yakutia) (RS(Y)) for the period between 1982 and 2017. The highest incidence of syphilis in RS(Y) was in 1997, 1998, 1999, which coincided with the socio-economic transformations in society. Currently, there is a decrease in syphilis morbidity. Nevertheless, the high rate of late latent forms requires epidemiological monitoring. В статье представлены данные анализа эпидемиологической ситуации по заболеваемости сифилисом в Республике Саха (Якутия) (РС(Я)) за период с 1982 по 2017 гг. В 1997, 1998, 1999 гг., что совпало с социально-экономическими преобразованиями в обществе. В настоящее время отмечается снижение заболеваемости сифилисом. Тем не менее высокая частота поздних латентных форм требует эпидемиологического контроля.

Об экологической безопасности Северо-Востока России

The group composition of asphaltene-resin-paraffin deposits (ARPD) in the Irelyakh field and their solubility in the composite solvents on the hexane base with the additives consisting of nonionic surface-active substances (NSAS) and concentrates of aromatic hydrocarbons is determined. The results of the investigations show that the additives Neonol AF-9-10 and liquid products of pyrolysis (LPP) are most efficient. The use of these additives allows to increase the efficiency of ARPD breaking and dissolving by 1,3 – 1,6 times as compared with a base solvent. It is shown that the increase in the concentration of individual additives from 0,5 to 3 % causes a decrease in the efficiency of detergent compounds.

Новые технологии как фактор сохранения экологического баланса в Арктике

Предварительные заметки по пастбищному делу и мастерству в оленеводстве Восточной Сибири: изучение Южной Якутии

Rheological, structural and oil displacing properties of the solutions of polyacrylamide (PAA) and carboxymethylcellulose (CMC) are fully investigated in the conditions of abnormally low reservoir temperatures. Physico-chemical processes occurring at a contact of highly mineralized formation water with the polymer solutions of PAA and CMC, which are different in composition, in the pore space of the reservoir are studied. The possibility of increasing the efficiency of hydrodynamic influence on the reservoir in the conditions of the fields of the southwest Yakutia due to the use of displacing compounds on the water-soluble polymer base is established experimentally.

We have studied the process of artificial methane hydrates obtaining in static conditions from distilled and "secondary" water (prepared by the decomposition of methane hydrate), as well as the additional metal surface using inside of cameras. It was found dependence from the type of the liquid phase and the presence/absence of additional metal surface inside the camera; in the same initial conditions of temperature and pressure, it can be obtained samples with different degrees of transformation of the "water-gas" to hydrate and various crystalline morphology.