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covid-19: Keep Covid away! Homemade single layer mask that is effective in blocking cough droplets

 


Washington: Scientists Homemade mask In blocking the droplets produced by coughing and sneezing, they were found to be fairly protected, even as a single layer.

Previous research focused on small transfers, Nanoscale aerosol particles Researchers at the University of Illinois at Urbana-Champaign in the United States say that vocalization, coughing, and sneezing through a mask produce large droplets (about 1 millimeter in diameter) that can carry virus particles.

They have a problem because if the large droplets have sufficient momentum, they can squeeze through some cloth pores and break into smaller droplets and float in the air. Said to cause.

In this study, published in the journal Extreme Mechanics Letters, scientists filled the nozzle of an inhaler with distilled water seeded with easy-to-find microscopic fluorescent particles-which happened to be the size of a novel. Coronavirus particle.

Researchers say that when the inhaler puffed, it pushed water into the nozzle, producing high-momentum droplets that were collected in a plastic dish placed in front of the inhaler.

Researchers have tested the ability to block particles by repeating this process by placing various materials on a collection dish.

“Use a high-resolution confocal microscope to count the number of nanoparticles that reach the dish. Then use the ratio of the number collected with and without cloth to the droplet blocking efficiency. You can get measurements. “Author Tahelsaif.

However, scientists said that in order for an individual to feel compelled to wear a mask, it must not only be able to block the droplets, but also be comfortable and breathable.

“Masks made of low-breathable fabrics are not only unpleasant, but also leak because exhaled air is pushed around the contours of the face, defeating the purpose of the mask and providing a false sense of protection. It can also cause, “said Saif.

“Our goal is to show that many common fabrics take advantage of the trade-off between breathability and efficiency of blocking large and small droplets,” he added.

Scientists used medical masks as a benchmark to test the breathability and droplet blocking capacity of 11 common household fabrics, including new and used clothing, quilted fabrics, sheets, and towels. ..

Next, we characterized the fabric in terms of structure, fiber content, weight, number of threads, porosity, and water absorption.

Their analysis shows that droplets exit the inhaler at about 17 meters (mps) per second, while those released by speech, coughing, and sneezing have velocities in the range of 10-40 (mps). Revealed.

“All the fabrics tested, even as a single layer, are quite good at blocking 100 nanometer particles carried by high-speed droplets similar to those emitted by talking, coughing and sneezing. It turned out to be effective. ”

“With two or three layers, even highly permeable fabrics such as T-shirt fabrics can achieve the same or better liquid drop blocking efficiency as medical masks while maintaining equal or better breathability.” He added.

Researchers believe that a new platform may provide a way to test the blocking efficiency of fabrics against the small or large droplets released when people breathe or cough. ..

Five Most Required Skills in the Workplace After Covid

Need to improve time skills

Skill up is the order of the day, whether the industry is affected, you are asked to retire, or you are just considering a change. And the new normal means that certain skills are highly required in the world after COVID-19, given that many of the normal lifestyles have changed. Employees around the world need to adapt to their digital infrastructure and work remotely. This requires learning new skills. Not only technology, but also soft skills to smoothly transition to new skills are required. Lakshmi Mittra, VP-Center of Excellence (CoE), and Clover Academy, Clover Infotech share the best skills in the post-covid world.

problem solving

Problem-solving skills are essential in situations where you work remotely. This can pose a range of challenges, as employees are effectively collaborating and communicating. Problem-solving skills allow employees to reasonably tackle problems and see them as opportunities. In this way, you can fix the situation and identify the most effective ways to keep your business operations running smoothly.

leadership

The current global crisis has tested not only the ability of employees to perform in remote work environments, but also their emotional resilience. Some companies have announced that they will work remotely until the end of 2020, so managers will manage the team remotely, inspire the team with results-based management, and have strong leadership qualities to get the best out of it. Development has become essential. Companies are organizing courses to improve their leadership and mid-career management teams to better plan and manage their work, and to build a sense of peerness remotely between teams.

Cyber ​​security expert

Most of the workforce is at home, so hackers use it as an opportunity to launch cyberattacks. According to recent reports, the number of cyber attacks on personal computers, networks and routers has increased significantly. As IT and cybersecurity become more important than ever, cybersecurity professionals are on the priority list of every company.

Communication skills

When working and collaborating remotely, it is very important to communicate clearly and plan well to get the most out of your team. From employee training and skill development to project implementation on time, communication skills can be very important and can be a key factor in distinguishing a successful project from other projects.

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