How to fight to coronavirus

日期: 2020-02-29
浏览次数: 138
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DateTime: 2020-02-29
浏览次数: 138

How to fight to coronavirus 

COVID-19, the name of the new coronavirus, was thought to have passed from animals to humans.

 

The coronavirus is horrible, but our ultrasonic still can break the germ call and kill the virus.

 

Following are some tips to fight to coronavirus:

 

Wash your hands frequently

Regularly and thoroughly clean your hands with an alcohol-based hand rub or wash them with soap and water.

Why? Washing your hands with soap and water or using alcohol-based hand sterilizer kills viruses that may be on your hands.

How to fight to coronavirus

Take off and clean your germ mask once back home.

Using ultrasonic cleaner to clean, it is a good choice.

Why? The ultrasonic will destroy the cell wall of germs and kill the germs, the ultrasonic cleaner is a good germ killer.

 

Avoid touching eyes, nose and mouth

Why? Hands touch many surfaces and can pick up viruses. Once contaminated, hands can transfer the virus to your eyes, nose or mouth. From there, the virus can enter your body and can make you sick.

 

Wear a medical mask when going out, take off and drop your medical mask once back home.

 

Sterilize baby's feeding equipment, including bottles and teats before use.

Ultrasonic cleaner or baby bottle sterilizer are good choices for protecting babies, VGT-6250 is your best baby bottle sterilizer if you have it.

Why? There’s always some risk of bacteria or disease getting into the reservoirs, it does reduce the risk to your kid by some super tiny amount.

How to fight to coronavirus

Stay informed and follow advice given by your healthcare provider.

Stay informed on the latest developments about COVID-19. Follow advices given by your healthcare provider, your national and local public health authority or your employer on how to protect yourself and others from COVID-19.

Why? National and local authorities will have the most up to date information on whether COVID-19 is spreading in your area. They are best placed to advise on what people in your area should be doing to protect themselves.

 

Ultrasound potentially safe, effective way to kill bacteria

University Park, Pa. - High-power ultrasound, currently used for cell disruption, particle size reduction, welding and vaporization, has been shown to be 99.99 percent effective in killing bacterial spores after only 30 seconds of non-contact exposure in experiments conducted by researchers at Penn State and Ultran Labs, Boalsburg, Pa.

In the experiments, bacterial spores contained in a paper envelope, were placed slightly (3mm) above the active area of a specially equipped source of inaudible, high frequency (70 to 200 kHz) sound waves and hit for 30 seconds. There was no contact medium, such as water or gel, between the ultrasound source and the spores as is typically used in low-power, medical diagnostic ultrasound. The experiments mark the first time that Non-Contact Ultrasound (NCU) has been shown to inactivate bacterial spores.

The researchers say the experiments demonstrate that NCU is a potentially safe, effective, non-radioactive way to decontaminate mail, including packages, since ultrasound waves potentially can penetrate cardboard and other wrappings just as they do layers of skin and tissue when used to image internal organs in the human body. They add that the technology could potentially sterilize medical and surgical equipment, food materials, the air duct systems of buildings, airplanes - even the space station.

The research team includes Dr. Kelli Hoover, assistant professor of entomology; Mahesh Bhardwaj, director of research and development, Ultran Labs; and Dr. Nancy Ostiguy, senior research associate in entomology. A patent, 'Gas Contact Ultrasound Germicide and Therapeutic Treatment,' is pending on the technique.

Hoover explains that the team used Bt spores in their experiments rather than the deadly anthrax spores found to contaminate mail last year. Bt, bacillus thuringiensis, is a common commercial insecticide and is also a close cousin of the anthrax bacillus. 'Bacillus anthracis and bacillus thuringiensis are very close relatives,' she adds. 'They differ by only a few genes on their plasmids that encode different toxins. If you remove those plasmids, Bt cannot be distinguished from B. anthracis and therefore can serve as a safe model for testing.'

In the experiments, samples of Bt spores were each subjected to different amounts of NCU exposure for different lengths of time. The spores were then supplied with nutrients so that they could grow. The number of bacterial spores that survived was determined by counting the number of colonies that grew.

The NCU devices used in the experiments were invented by Bhardwaj who also develops and markets speciality transducers for industrial and biomedical applications. Bhardwaj holds U.S and international patents for very high transduction NCU transducers that can generate high power ultrasound in air in the frequency range of 50 kHz to 10 MHz, comparable to conventional ultrasound frequencies.

'I thought these NCU transducers should be investigated to destroy germs and spores since conventional high power ultrasound was already being used for invasive and non-invasive tissue destruction,' adds Bhardwaj, who is director of R&D at Ultran.

He says, 'The efficiency of an NCU device is dependent on the properties of the transition layers on the piezoelectric material which create the high acoustic pressure ultrasound waves in air. This principal, in conjunction with new materials, is applied in the new patented NCU device developed for decontamination.'

Bhardwaj, who a Penn State alumnus, recruited Hoover and Ostiguy for the decontamination studies, which were supported, in part, by Hoover's Hatch grants.

 

Reference: news is from https://news.psu.edu/story/187690/2002/12/11/ultrasound-potentially-safe-effective-way-kill-bacteria

 


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