Nik Wallenda, first man to complete 1800-feet tightrope walk across Niagara Falls

June 16, 2012

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Ontario, Canada, June 16: Daredevil Nik Wallenda became the first person to walk on a tightrope across the Niagara Falls, taking steady, measured steps Friday night for 1,800 feet across the mist-fogged brink of the roaring falls separating the U.S. and Canada.

"I feel like I'm on cloud nine right now," an exuberant Wallenda told reporters after accomplishing what he said was his childhood dream before an estimated 112,000 people crowding the shores of both countries and millions more who watched a live television broadcast.

He described wind "coming from every which way," mist so powerful he had to blink it away to maintain his vision and a breathtaking view during the nighttime walk illuminated by spotlights that "compared to nothing."

"There was no way to focus on the movement of the cable," said Wallenda, 33. "If I looked down at the cable there was water moving everywhere. And if I looked up there was heavy mist blowing in front of my face. So it was a very unique, a weird sensation."

He said he accomplished the feat through "a lot of praying, that's for sure. But, you know, it's all about the concentration, the focus, and the training."

The seventh-generation member of the famed Flying Wallendas had long dreamed of pulling off the stunt, never before attempted. Other daredevils have wire-walked over the Niagara River but farther downstream and not since 1896.


"This is what dreams are made of, people," said Wallenda, who wore a microphone for the broadcast, shortly after he stepped off from a platform on the American shore.

Along the way, he calmly prayed aloud.

After passing the halfway mark, Wallenda expressed fatigue. "I'm strained, I'm drained," he said. "This is so physical, not only mental but physical."

Toward the end, as he neared the Canadian shore, Wallenda dropped to one knee and pumped his fist while the spectators cheered.


He broke into a playful run about 15 feet from the finish line, where his wife and three children waited.

"I am so blessed," he said later. "How blessed I am to have the life that I have."

ABC televised the walk and insisted Wallenda use a tether to keep him from falling in the river. Wallenda said he agreed because he wasn't willing to lose the chance to perform the walk it took him well over a year to win permission from two countries to do. Such stunts are normally illegal. ABC's sponsorship helped offset some of the $1.3 million cost of the spectacle.

Wallenda said he thought about the tether, which was secured at his waist and dragged behind him, at several points along the 30-minute walk but wasn't hindered by it as he'd feared.

"Awesome! The whole thing is awesome," 8-year-old William Clements of Dresden, Ontario, said after watching the walk with his family from the Canadian side, adding he wouldn't want to walk "even over something not high."

"He was meant to do it. The weather was perfect," said Glenda Rutherford of Ontario. "It was amazing."

For Wallenda, who has grown up on the high wire and holds six Guinness records for various stunts, the Niagara Falls walk was unlike anything he'd ever done. Because it was over water, the 2-inch wire didn't have the usual stabilizer cables to keep it from swinging. Pendulum anchors were designed to keep it from twisting under the elkskin-soled shoes designed by his mother.

The Wallendas trace their roots to 1780 Austria-Hungary, when ancestors traveled as a band of acrobats, aerialists, jugglers, animal trainers and trapeze artists. The clan has been touched by tragedy, notably in 1978 when patriarch Karl Wallenda, Nik's great-grandfather, fell to his death during a stunt in Puerto Rico.

Wallenda said that at one point in the middle of the walk, he thought about his great-grandfather and the walks he had taken:


"That's what this is all about, paying tribute to my ancestors, and my hero, Karl Wallenda."

About a dozen other tightrope artists have crossed the Niagara Gorge downstream, dating to Jean Francois Gravelet, aka The Great Blondin, in 1859. But no one had walked directly over the falls, and authorities hadn't allowed any tightrope acts in the area since 1896. It took Wallenda two years to persuade U.S. and Canadian authorities to allow it, and many civic leaders hoped to use the publicity to jumpstart the region's struggling economy, particularly on the U.S. side of the falls.




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Agencies
March 28,2020

Canadian researchers are developing a DNA vaccine for SARS-CoV-2, the coronavirus that causes COVID-19 and has currently infected nearly 5,00,000 people worldwide and crippled the global economy.

Entos Pharmaceuticals, a health-care biotechnology company headed by a University of Alberta researchers, develop new therapeutic compounds using the company's proprietary drug-delivery platform and has begun manufacturing vaccine candidates against the novel coronavirus.

"Given the urgency of the situation, we can have a lead candidate vaccine within two months. Once we have that it's a race to get it into clinical trials," said John Lewis, CEO of Entos and a Professor at the University of Alberta in Canada.

Lewis said in comparison to a traditional vaccine, DNA-based vaccines hold several advantages.

Nucleic acids are introduced directly into the patient's own cells, causing them to make pieces of the virus--tricking the immune system into mounting a response without the full virus actually being present, the researcher said.

According to the company, the approach is recognised as being easier to move into large-scale manufacturing, offers improved vaccine stability and works without needing an infectious agent.

In the current absence of a vaccine for COVID-19, several companies around the world are mounting efforts to begin similar work.

The first clinical trial using a DNA-based vaccine developed by Moderna Inc.in the US on March 13.

Their approach allows for antibodies to be made in the human trial volunteers against a specific protein on the surface of the coronavirus that lets the virus enter human cells.

The hope is that the antibodies will stop the interaction.

Though this approach is designed to be effective against COVID-19 specifically, Lewis said Entos is taking a different tack.

The company plans to use plasmid DNA to amplify the production of key coronavirus surface and structural proteins with each injection, with an eye to the bigger picture.

"Many of the structural proteins in the virus are pretty well conserved across all the coronaviruses, including SARS and MERS," said Lewis.

"We're hoping that if we express more of the structural proteins that are common to most coronaviruses, we can inhibit the current COVID-19, and also potentially protect against all coronaviruses both past and future," Lewis added.

To move the project forward quickly, the company is seeking financial support from both provincial and federal levels of government.

"We have the opportunity to save a lot of lives, and I think it's really upon us and governments to find solutions for that," Lewis said.

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News Network
May 20,2020

London, May 20: The current physical distancing guidelines of 6 feet may be insufficient to prevent COVID-19 transmission, according to a study which says a mild cough in low wind speeds can propel saliva droplets by as much as 18 feet.

Researchers, including those from the University of Nicosia in Cyprus, said a good baseline for studying the airborne transmission of viruses, like the one behind the COVID-19 pandemic, is a deeper understanding of how particles travel through the air when people cough.

In the study, published in the journal Physics of Fluids, they said even with a slight breeze of about four kilometres per hour (kph), saliva travels 18 feet in 5 seconds.

"The droplet cloud will affect both adults and children of different heights," said study co-author Dimitris Drikakis from the University of Nicosia.

According to the scientists, shorter adults and children could be at higher risk if they are located within the trajectory of the saliva droplets.

They said saliva is a complex fluid, which travels suspended in a bulk of surrounding air released by a cough, adding that many factors affect how saliva droplets travel in the air.

These factors, the study noted, include the size and number of droplets, how they interact with one another and the surrounding air as they disperse and evaporate, how heat and mass are transferred, and the humidity and temperature of the surrounding air.

In the study, the scientists created a computer simulation to examine the state of every saliva droplet moving through the air in front of a coughing person.

The model considered the effects of humidity, dispersion force, interactions of molecules of saliva and air, and how the droplets change from liquid to vapour and evaporate, along with a grid representing the space in front of a coughing person.

Each grid, the scientists said, holds information about variables like pressure, fluid velocity, temperature, droplet mass, and droplet position.

The study analysed the fates of nearly 1,008 simulated saliva droplets, and solved as many as 3.7 million equations.

"The purpose of the mathematical modelling and simulation is to take into account all the real coupling or interaction mechanisms that may take place between the main bulk fluid flow and the saliva droplets, and between the saliva droplets themselves," explained Talib Dbouk, another co-author of the study.

However, the researchers added that further studies are needed to determine the effect of ground surface temperature on the behaviour of saliva in air.

They also believe that indoor environments, especially ones with air conditioning, may significantly affect the particle movement through air.

This work is important since it concerns safety distance guidelines, and advances the understanding of the transmission of airborne diseases, Drikakis said.

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News Network
February 22,2020

Johannesburg, Feb 22: To meet shortage of skilled nursing staff, private hospitals in South Africa are recruiting senior Indian nurses for their good work ethics and ability to become efficient trainers for the local staff, according to a media report.

A report at a 2018 jobs summit indicated that the country had a shortage of more than 47,000 nurses.

The shortage of the skilled nursing staff has been attributed to several factors, including preference of highly qualified nurses to emigrate or take up contract employment in countries such as the UK, the United Aarb Emirates, Saudi Arabia or New Zealand for want of higher salaries, a report in the weekly Business Times said.

Mediclinic, one of South Africa's largest private hospital groups, confirmed that it is recruiting 150 nurses from India this year.

“To supplement our training, as an internal strategy, we will continue to recruit senior registered nurses from India,” a Mediclinic spokesperson told the Business Times.

Mediclinic started recruiting nurses from India in 2005 but could not provide details about how many among the more than 8,800 nurses it employs at its hospitals are from India.

Another company, Life Healthcare SA, said it employed 135 Indian nurses between 2008 and 2014.

Top managements at the hospital groups lauded senior Indian nurses as being very efficient trainers for local staff.

“But we find that many of them prefer coming here on short-term contracts due to family commitments," a hospital executive said on the basis of anonymity.

The official said that the few who apply for long-term positions are usually young newly-qualified nurses, which is not the group in demand.

“They work hard, with a patient-oriented work ethic, and do not have the nine-to-five approach of many local nurses, especially those who are unionised," the official said.

“We would be very happy to take in more nursing staff from India," the official added.

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