Теплофизические модели слоисто-неоднородных горных массивов

Стисло розглянуто математичні моделі процесів переносу тепла в шаруватонеоднорідних гірничих масивах. Запропоновано загальний метод моделювання теплопереносу в шаруватих системах різної геометрії. Знайдено рівняння «склеювання», за допомогою якого розглянуто асимптотичні випадки.Mathematical models of heat transfer in layered inhomogeneous rock media are summarized. A general method of modeling the heat transfer in layered systems of a different geometry is proposed. A “matching” equation for different asymptotic cases has been found

SARS-CoV-2 infection in farmed minks, the Netherlands, April and May 2020

Respiratory disease and increased mortality occurred in minks on two farms in the Netherlands, with interstitial pneumonia and SARS-CoV-2 RNA in organ and swab samples. On both farms, at least one worker had coronavirus disease-associated symptoms before the outbreak. Variations in mink-derived viral genomes showed between-mink transmission and no infection link between the farms. Inhalable dust contained viral RNA, indicating possible exposure of workers. One worker is assumed to have attracted the virus from mink

Limits to Growth in Organic Sales

field experiment, consumption, price elasticity of demand, organic food, C93, D12, Q18,