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Stanford Professor Manu Prakash invents paperfuge medical device

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Manu Prakash
Manu Prakash

Stanford professor Manu Prakash’s lab developed a 20-cent centrifuge based on an ancient spinning toy. Credit: Kurt Hickman/Stanford News Service.

SAN FRANCISCO (Diya TV) – An Indian-American professor at Stanford University has developed a whirligig centrifuge that has the potential to reinvent the separation of blood plasma from red blood cells. Researchers and scientists have been using centrifuge tubes since their invention in 1938, however, now it looks like things are changing.

Here’s how to build a whirligig: Thread a loop of twine through two holes in a button. Grab the loop ends, then rhythmically pull. As the twine coils and uncoils, the button spins at a dizzying speed.

Using this ancient technology, Manu Prakash and Stanford bioengineers have created an ultra-low-cost, human-powered centrifuge that separates blood into its individual components in only 1.5 minutes. Built from 20 cents of paper, twine and plastic, a “paperfuge” can spin at speeds of 125,000 rpm and exert centrifugal forces of 30,000 Gs.

“To the best of my knowledge, it’s the fastest spinning object driven by human power,” Prakash, an assistant professor of bioengineering at Stanford, told the university’s website.

A laboratory centrifuge is critical for detecting diseases such as malaria, African sleeping sickness, HIV and tuberculosis. This low-cost version will enable precise diagnosis and treatment in the poor, off-the-grid regions where these diseases are most prevalent. The physics and test results of the device were published in the Jan. 10 issue of Nature Biomedical Engineering.

When used for disease testing, a centrifuge separates blood components and makes pathogens easier to detect. A typical centrifuge, powered by electricity, spins fluid samples inside a rotating drum. As the drum spins, centrifugal forces separate fluids by density into layers within a sample tube.

Prakash, who specializes in low-cost diagnostic tools for underserved regions, came up with the idea for the centrifuge after he saw an expensive version of the device being used as a doorstop in a rural clinic in Uganda because there was no electricity to run it. His device requires no electricity.

“There are more than a billion people around the world who have no infrastructure, no roads, no electricity. I realized that if we wanted to solve a critical problem like malaria diagnosis, we needed to design a human-powered centrifuge that costs less than a cup of coffee,” he said.

Information from Stanford News Service contributed to this report.

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Missing Hindu woman found mutilated in Pakistan

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SAN FRANCISCO (Diya TV) – The mutilated body of a Hindu woman was found in a field in southeastern Pakistan. Police say 40 year old Daya Bheel was murdered in the latest suspected attack against minorities in the Muslim-majority country. Authorities say they have arrested some suspects but have not determined a motive.

The Khosla family has donated nearly 2 million dollars to the Nudge Institute to help fight poverty. The philanthropists have donated millions of dollars for many other causes.

And disgraced FTX founder Sam Bankman-fried pleaded not guilty to eight different counts of wire fraud, securities fraud, and conspiracy before a U.S. federal court in the Southern District of New York. U.S. prosecutors allege that under Bankman-Fried’s direction, FTX, once considered one of the largest and most-trusted cryptocurrency exchanges, transferred billions in customer assets to his trading firm, Alameda Research. If convicted of these charges, Bankman-Fried faces up to 115 years in prison.

Ravi Kapur contributed to this report.

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Christmas crash kills Indian American toddler

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Tragic news out of Nevada. Authorities say an Indian American toddler has died in a devastating Christmas day car crash and his mother is in critical condition fighting for her life. Authorities say the accident happened on a busy Las Vegas boulevard and they were returning home from a trip in California.

Anil Beephan is now the first Indian American Republican ever to be elected to the New York State Assembly in Albany. So far only Indian American Democrats have been elected to the state legislature. Beephan will also become the first minority to represent Dutchess County and at 29 years old, he’s the youngest GOP rep in the state legislature. He’s currently in the tech industry and has also worked as a volunteer firefighter.

Vice President Kamala Harris has named Indian American Rajeev Badyal to a key national advisory group, responsible for strategy and recommendations to improve and maintain space policy. Badyal already works for Amazon, helping launch satellites into orbit. 

Ravi Kapur contributed to this report.

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EXCLUSIVE: Warriors host first-ever Bhangra Night

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SAN FRANCISCO (Diya TV) – The Golden State Warriors first-ever Bhangra Night made its debut during the Warriors-Jazz game at the Chase Center in San Francisco. The Warriors say it’s a chance for the team to connect with the Bay Area’s rapidly growing South Asian community and fan base. Only Diya TV was on hand to capture the festivities. This change from the annual Bollywood night was supposed to take place in 2020 but was postponed because of the pandemic.

A federal jury in San Francisco has convicted Sivannarayana Barama of insider trading. Authorities say he used the quarterly financial performance of Palo Alto Networks before that information was released to the public and then traded in that company’s stock while that information was still confidential. Barama worked in IT for several Silicon Valley companies.

U.S. Border Patrol caught more than 4000 Indians illegally crossing the Mexico border in October and November. That’s more than double compared to the same time frame last year. An Indian man recently died climbing a border wall in Texas. The Biden administration is struggling to contain a surge of illegal immigration at the southern border.

Ravi Kapur contributed to this report.

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