Dołączył: 29 Lip 2020
|Wysłany: Czw Gru 31, 2020 03:49 Temat postu: That development and popularity associated
|That development and popularity associated with modern protective masks are closely linked to air pollution, pollen, as well as the spread of disease. Many about the history involving protective mask?
This article contains this:
History of shielding mask
IN series: No time reduce for protection of non-oily revoked particles
R series: safety of non-oily suspended contaminants and sweaty suspended allergens for eight hours
P set: protection against non-oily dangling particles and sweaty halted particles without time restrict
When the carrier of some particulate matter will be oily, and these substances are attached with the electrostatic non-woven cloth, it will reduce this electrical property and permit the fine dust to help penetrate. Purpose of debris. So each series is usually divided into 3 concentrations: 95%, 99%, 99. 97% (ie NINETY FIVE, 99, 100 for short), so you'll find 9 categories of sieve media.
History of protecting mask
China was the first to use a protective mask on the earth. In ancient times, people in the court began to pay their noses and noses with silk scarves so that you can prevent dust and air pollution.
In the quick 13th century, protective masks only appeared within the Chinese court. To stop the breath from getting the emperor's food, the waiter made a mask created from silk and gold post.
At the end from the 19th century, protective masks began being used in the field of health care. German pathologist Leidge begins recommending medical staff to make use of gauze wraps to prevent transmissions.
At the beginning belonging to the 20th century, protective masks became that must-have items of public life for initially. The Spanish flu containing swept the world offers claimed about 50 k lives, and the general population has been required to wear masks to fight herpes.
In the middle and late 20th century, the large-scale using protective masks was a lot frequent. In history, masks have played a good deal of important roles in keeping and blocking the spread of germs inside the major influenza flu.
Around 1897, the German Medech introduced a technique for covering mouth and also nose with gauze to counteract bacterial invasion. Later, someone made a six-layer gauze disguise and sewed it for the collar. Just turn that over and cover your own nose and mouth. However, it has been highly inconvenient to press along with hold this mask.
Subsequently, someone came up which includes a strap on the ear, which became a protective mask that searchers often use today.
With 1910, a plague split out in Harbin. The moment, Dr. Wu Liande, the deputy supervisor in the Beiyang Army Medical University, invented the "wood-style goggles. "
In 2003, the utilization and popularity of masks reached a fresh climax. A SARS caused masks for being sold out for a period. There were long lines while in front of major drug stores, and people rushed to get masks.
In 2009, adhering to the "bird flu" around 2004, the "Avian H1N1 Influenza" produced protective masks once again appear as you're watching cameras of major news media around the globe.
The emergence of this PM2. 5 air hazard theory in 2013 caused public attention on the problem of air carbon dioxide, making protective equipment such as protective masks very well-liked during haze weather.
People with heart as well as respiratory problems (such because asthma emphysema), pregnancy, dizziness soon after wearing, difficulty breathing, and sensitive skin aren't suitable for wearing defensive masks.
The article is concerning the history of this protective masks. If you might have and demand of sterile masks, please contact Vench.