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Researchers Are Developing Fast, Accurate Tests to Detect Viruses Like SARS-COV-2

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Researchers at the University of Central Florida have developed a device that detects viruses such as SARS-COV-2 in the body more accurately and as quickly as the rapid detection tests commonly used today.

Optical sensors use nanotechnology to accurately identify viruses in seconds. Blood sample..Researchers say the device can tell if someone has it with 95% accuracy virusSignificant improvements to the current rapid testing, which experts warn, may be less accurate. Testing for the virus is important for early treatment and prevention of the spread of the virus.

The results are detailed in a new study in the journal Nano letter..

Researchers tested the device with a sample of dengue virus, a mosquito-borne pathogen that causes dengue fever and poses a threat to people in the tropics. However, this technology can be easily adapted to detect other viruses such as SARS-COV-2, says Debashis Chanda, a professor at UCF’s NanoScience Technology Center, co-author of the study. ..

“High-sensitivity optical sensors, along with the rapid manufacturing approach used in this task, can transform this promising technology with a high degree of specificity and accuracy for detection of any virus, including SARS-COV-2 and its mutations. I promise, “says Chanda. “Here we have demonstrated a reliable technique that combines a genetic code such as PCR with an optical system on a chip to accurately detect the virus directly from the blood.”

This device closely matches the accuracy of gold standard PCR-based tests, but with near-instantaneous results rather than days of reception. Its accuracy is significantly improved over the current rapid antigen test warned by the U.S. Food and Drug Administration and the Centers for Disease Control and Prevention, and is inaccurate if the viral load is low or if the test instructions are not followed correctly. Results may occur.

The device works with a gold nanoscale pattern that reflects the virus’s signature that is set to detect on blood samples. Different viruses can be detected by using different DNA sequences that selectively target a particular virus.

The key to device performance is the ability to detect viruses directly from blood samples without the need for sample preparation or purification. This speeds up testing and improves accuracy.

“Most of the biosensor demonstrations in the literature use buffers as a test matrix to contain targeted analytes,” says Chanda. “But these approaches are not practical in real-world applications. Complex body fluids containing target biomarkers, such as blood, are the main cause of sensing, while at the same time the main cause of protein contamination leading to sensor failure. Because it is the cause. “

Researchers have confirmed the effectiveness of the device in multiple tests using different viral concentration levels and solution environments, including the presence of non-target viral biomarkers.

Abraham Vazquez Guardard, a postdoc at Northwestern University who was the lead author of the study and worked as a postdoctoral student in Chanda’s lab, said he was excited about the possibility.

“There was a previous demonstration of optical biosensing with human serum, but it requires offline complex and dedicated sample preparation by skilled personnel. This is a product not available in regular point of care applications.” Vazquez-Guardado says. “This study demonstrates for the first time an integrated device that separates plasma from blood and detects target viruses without pretreatment, with potential for practical use in the near future.”

According to Chanda, the next step in the study will include adapting the device to detect more viruses.

Portable, Affordable, Accurate, Fast: Team Invents New COVID-19 Test

For more information:
Abraham Vazquez-Guardado et al., DNA-modified plasmon sensor for detecting viral biomarkers directly from blood, Nano letter (2021). DOI: 10.1021 / acs.nanolett.1c01609

Quote: The researchers obtained SARS-COV-2 (2021, November 29, 2021) from https: //phys.org/news/2021-11-rapid-highly-accurate-viruses- on November 29, 2021. ) Develop fast and accurate tests to detect viruses like. sars-cov-.html

This document is subject to copyright. No part may be reproduced without written permission, except for fair transactions for personal investigation or research purposes. Content is provided for informational purposes only.

Researchers are developing fast, accurate tests to detect viruses like SARS-COV-2

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Polish Researchers Invent Anti-smog Sound Cannon

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“We use vertical shock waves generated by the combustion of acetylene and air,” says Dominique Grivos on the right.

In the constant fight against Poland’s smog, scientists are experimenting with new “cannons” that use sound waves to push toxic particles into the atmosphere, allowing residents to breathe.

The experimental device sits on a metal container and consists of a large upside-down cone that makes a loud noise every 6 seconds.

The purpose is to track smog From Kalwaria Zebrzydowska, where the inhabitants face problems every winter in a heavily polluted state, like many Polish towns and cities. Heating system..

When the sun goes down, the chimneys spew out thick smoke, causing heavy smog to fall into the town.

Poland is one of the most polluted countries in Europe, violating EU standards by hundreds of percentage points at the worst of the year.

By creating sound waves, researchers can “Cannon“Helps reduce the concentration of harmful PM2.5 and PM10 particles in the town air.

“We use vertical shock waves generated by the burning of acetylene and air,” said Dominik Grybos of the Mining and Metallurgy Academy in Krakow, one of the inventors.

“The waves are Polluted air Higher, “he told AFP.

The Toxic particles It is sent hundreds of meters (yards) high and is harmless to the inhabitants.

The experimental sound “cannon”, as described by Polish researchers, can blow toxic particles into the sky hundreds of meters.

“We found that using the cannon for 30 minutes to an hour reduced pollution by 15-30% within a range of 2-3 km (1.2-1.9 miles) from the cannon,” says Grybos. He adds that the effect lasts “between 1 and 3 hours.”

Researchers are trying to calculate the required frequency of blast waves and the duration and time required for the entire procedure.

The price is estimated to be 1,000 to 1,500 zloty ($ 250 to $ 375) for one hour of use.

Mr. Grivos said he hopes that the invention will find commercial use, especially in Poland.

Residents of Kalwaria Zebrzydowska are in widespread support for this idea, despite the sound.

“The smog is very heavy here. The smell is so bad that I can’t deflate the apartment. If that helps, let them test,” said 43-year-old accountant Joranta Warkowich.

“I can hardly hear the sound. It’s like a fireworks display,” she added.

Toxic smog chokes Indian capital during Diwali celebration

© 2022 AFP

Quote: Polish researchers obtained the Anti-Smog Sound Cannon (January 20, 2022) from https: //phys.org/news/2022-01-anti-smog-cannon.html on January 20, 2022. ) Was invented

This document is subject to copyright. No part may be reproduced without written permission, except for fair transactions for personal investigation or research purposes. Content is provided for informational purposes only.

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Jake Paul Reportedly Earned $ 45 Million in 2021 and Logan Earned $ 18 Million.

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Jake When Logan Paul It was a money-making machine in 2021 … People who turned from YouTube superstars to boxers reportedly made a total of $ 63 million over the past year.

Forbes We just released a list of the highest-paying influencers on social media platforms on Friday … Problem Child comes in second and is expected to generate $ 45 million in revenue.

The outlet reports that about $ 40 million of that Mula came through the boxing ring-Jake is defeating Ben Askren April and Tyron Woodley In August and December.

Whether or not Jake is considered a “real” boxer, the serious money he has in his pocket is indisputable-his income in 2021 made him among the top athletes last year. You put it in … Canelo AlvarezIt reportedly brought in $ 34 million.

Logan, who ranked 8th on Forbes’ YouTube list, reportedly earned $ 18 million in 2021 … Floyd Mayweather, His “Impaulsive” podcast, and other business opportunities.

Despite the insane profits of 2021, neither Jake nor Logan could beat Beast As the number one spot, the YouTube King brought only $ 54 million.

Jake Paul reportedly earned $ 45 million in 2021 and Logan earned $ 18 million.

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Florida Black Bear Killed After Attacking a Dog Walking Woman

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Volcia County, Florida — A black bear in Florida was killed after attacking a woman walking a dog on Thursday night.

and Press releaseThe Florida Fish and Wildlife Conservation Commission (FWC), along with the Volusia County Sheriff’s Office, said it answered a call at DeBary around 9 pm about a woman who was injured by a black bear while walking her dog.

Upon arrival, the agent found an adult female bear of a yearling in a nearby tree.

“FWC bear biologists threw adult bears in trees and humanely killed them according to FWC policy to protect public safety,” FWC said in a press release.

The FWC refused to capture the yearlings because “three 100-pound yearlings are old enough to survive on their own.”

The woman was treated by EMS for a non-life-threatening injury. According to the FWC, her dog was not injured.

If you feel threatened by a bear, please contact the FWC Wildlife Alert Hotline (888-404-FWCC (3922)). Observe sick, injured, dead, or orphaned bears. Or report someone who is harming or intentionally feeding the bear. For more information on how to avoid bear-to-bear collisions, please visit: MyFWC.com/Bear also BearWise.org..

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