| Description: | One category of evidence comes from laboratory studies of respiratory droplets and the ability of various masks to block them. An experiment using high-speed video found that hundreds of droplets ranging from 20 to 500 micrometers were generated when saying a simple phrase, but that nearly all these droplets were blocked when the mouth was covered by a damp washcloth. Another study of people who had influenza or the common cold found that wearing a surgical mask significantly reduced the amount of these respiratory viruses emitted in droplets and aerosols.
House & Construction tips : Slower percolation rates due to poorly draining soil with clay, bedrock, high ground water, proximity to a creek, or other complications require larger leach fields. There are two methods of calculating the minimum absorption area for a leach field. Traditionally, you dig an eight foot deep test inspection hole in the area of the intended leach field to allow building inspector, or your local engineer, to physically examine the soil and determine its Long Term Acceptance Rate. Or you can have a local soil testing firm perform a percolation test to clock the speed of your soil's capacity to absorb liquids.
Real estate business developments: What Are Virtual House Tours? Over the past few years, virtual reality (VR) has taken the world by storm. This new technology allows businesses to give customers a glimpse into their products and services. Why spend hours trying to convince buyers when you can offer a virtual tour? Today, most industries use virtual reality to a certain extent. For instance, hospitals train medical students in surgery with the help of this technology. Dentists use VR headsets to keep patients distracted during treatment. Read additional info on this website. |
