if the desired temperatures are to be maintained economically. cork, glass fibre, and various foam plastics in sheet or granulated form may be used for insulating purposes, also air spaces which are less efficient. glass fibre is often used in modern ships as it has a number of advantages over the other...
if the desired temperatures are to be maintained economically. cork, glass fibre, and various foam plastics in sheet or granulated form may be used for insulating purposes, also air spaces which are less efficient. glass fibre is often used in modern ships as it has a number of advantages over the other...
if the desired temperatures are to be maintained economically. cork, glass fibre, and various foam plastics in sheet or granulated form may be used for insulating purposes, also air spaces which are less efficient. glass fibre is often used in modern ships as it has a number of advantages over the other...
the infectivity of sars-cov- on inanimate surfaces or in aerosol flows in closed buses may last at least min. the distance from patient zero to his infected persons is - m. patient zero and all of the infected passengers in the bus did not wear masks, of which two infected passengers infected two other...