Hot weather theory falls flat, coronavirus more potent in India post-summer

Bengaluru, May 27: Karnataka Chief Minister Yediyurappa on Wednesday said that his government will re-open temples, mosques and churches in the state after May 31.

"We are going to open temples, mosques and churches in the state after May 31, he said while speaking to media in Bengaluru.

The Chief Minister added that the "guidelines will be followed" as suggested by experts for opening the worship places.

"We have no objections to open malls and cinema halls, but we are waiting for the guidelines of the central government, Prime Minister will take decisions to allow malls and cinemas to open," he added.

Yediyurappa has said that people from Gujarat, Maharashtra, Kerala and Tamil Nadu will not be allowed in the state till May 31.

Scientists have designed a “catch and kill” air filter which they say can trap the novel coronavirus and neutralise it instantly, an invention that may reduce the spread of COVID-19 in closed spaces such as schools, hospitals and health care facilities, as well as public transit environments like airplanes.

According to the study, published in the journal Materials Today Physics, the device killed 99.8 per cent of the novel coronavirus, SARS-CoV-2, in a single pass through its filter. It said the device, made from commercially available nickel foam heated to 200 degrees Celsius, also killed 99.9 per cent of the spores of the deadly bacterium Bacillus anthracis which causes the anthrax disease.

“This filter could be useful in airports and in airplanes, in office buildings, schools, and cruise ships to stop the spread of COVID-19,” said Zhifeng Ren, a co-author of the study from the University of Houston (UH) in the US.

“Its ability to help control the spread of the virus could be very useful for society,” Ren added.

The researchers said they are also developing a desk-top model for the device which is capable of purifying the air in an office worker’s immediate surroundings. According to the scientists, since the virus can remain in the air for about three hours, a filter that could remove it quickly was a viable plan, and with businesses reopening across the world, they believe controlling the spread in air conditioned spaces was urgent.

The study noted that the novel coronavirus cannot survive temperatures above 70 degrees Celsius, so by making the filter temperature far hotter — about 200 degree Celsius, the researchers said they were able to kill the virus almost instantly.

Ren said the nickel foam met several key requirements. “It is porous, allowing the flow of air, and electrically conductive, which allowed it to be heated. It is also flexible,” the researchers noted in a statement.But they added that nickel foam also had low resistivity, making it difficult to raise the temperature high enough to quickly kill the virus.

The researchers said they solved this problem by folding the foam, connecting multiple compartments with electrical wires to increase the resistance high enough to raise the temperature as high as 250 degrees Celsius. By making the filter electrically heated, rather than heating it from an external source, they said the the amount of heat that escaped from the filter is minimised, allowing air conditioning to function with very low strain.

When the scientists built and tested a prototype for the relationship between voltage/current and temperature, they said it satisfies the requirements for conventional heating, ventilation, and air conditioning (HVAC) systems, and could kill the coronavirus.

“This novel biodefense indoor air protection technology offers the first-in-line prevention against environmentally mediated transmission of airborne SARS-CoV-2, and will be on the forefront of technologies available to combat the current pandemic and any future airborne biothreats in indoor environments,” said Faisal Cheema, another co-author of the study from UH.

The researchers have called for a phased roll-out of the device, “beginning with high-priority venues, where essential workers are at elevated risk of exposure.” They believe the novel device will both improve safety for frontline workers in essential industries and allow nonessential workers to return to public work spaces.

New Delhi, May 29: Opining that there is no harm in importing ideas from abroad Swadeshi Jagran Manch, an affiliate of Rashtriya Swayamsevak Sangh, has suggested that India should take a cue from Pakistan and turn the “locust threat” into “chicken feed.

In an interview, Ashwani Mahajan, national co-convener of Swadeshi Jagran Manch (SJM) said: “I saw an article which shows that Pakistan has turned the locust threat into an opportunity by converting it into chicken feed”

“If there is a good idea originating from anywhere, we should be open to exploring such ideas. We should adopt good ideas. There is no harm in that,” he added.

He also shared the article on Twitter and wrote: “Pakistan turns locust threat into chicken feed. Need to understand the idea and replicate it in India.”

The article stated “an innovative pilot project in Pakistan’s Okara district offers a sustainable solution in which farmers earn money by trapping locusts that are turned into high-protein chicken feed by animal feed mills”.

“It was the brainchild of Muhammad Khurshid, a civil servant in the Ministry of National Food Security and Research, and Johar Ali, a bio-technologist from the Pakistan Agricultural Research Council,” according to the article.

Both Pakistan and India have been hit by locust attacks. These are desert locusts, which is one of the 12 species of short-horned grasshoppers. Swarms can comprise billions and travel up to 130 km in a day.

India has been battling the locust attacks with moderate success since December. However, the onset of monsoon could bring more trouble.