Tuesday February 19, 2019
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This new technology will help you brew tea three times faster

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By Newsgram Staff Writer

Scientists at Drexel University in Pennsylvania have developed a technology that can heat water faster up to three times. This can be really helpful in conserving energy in industrial power plants or large-scale electronic cooling systems. It can also be used to make tea quickly, technically speaking.

The air bubbles created while heating water temporarily insulate heating elements from the surrounding water, slowing down the transfer of heat. The scientists have found that the size of these bubbles can be reduced by coating a heating element with a virus found on tobacco plants.

The reduction in bubble size will also prevent ‘critical heat flux’ caused when bubbles merge into a blanket surrounding the element hampering the transfer heat to the water.

‘What happens then is the dry surface gets hotter and hotter, like a pan on the stove without water in it. This failure can lead to the simple destruction of electronic components, or in power plant cooling applications, the catastrophic meltdown of a nuclear reactor.’  Matthew McCarthy, an engineer at Drexel University was quoted in the PSFK magazine.

Scientists had been looking for ways to develop a surface that repels bubbles and keep the boiling surface wet. McCarthy’s team found that tobacco mosaic virus was perfect for the purpose.

They have genetically modified the virus so that it can attach itself to any surface. Once the virus is attached to the surface, it is coated with a microscopically thin layer of nickel to make the virus inert.  This forms a sort of metallic grass which can wick moisture to the surface and repel bubbles.

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Tobacco Vendors Eye Schools For Sale, Says Study

It also stated that vendors display tobacco products in ways that are appealing to children and youth and utilize sales techniques such as discounting products and distributing free samples

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Tobacco vendors eye schools for sale: Study. Pixabay

Tobacco companies in India are targeting schoolchildren as young as eight years for sale of their products and placing advertisements, finds a new study.

Conducted by Consumer Voice and Voluntary Health Association (VHA) of India the study titled ‘India Tiny Targets Report’ which was released here on Wednesday, found that nearly half of the vendors around schools sell tobacco products.

It covered schools in 20 cities across six states — Delhi, Gujarat, Madhya Pradesh, Assam, Tamil Nadu and Telangana.

For the study, survey was carried out in 243 schools at 487 point of sales (PoSs) across India has found that about half of them (225) sell tobacco products to minors.

FILE – Cigarette packs are seen on shelves in a tobacco shop in Cagnes-sur-Mer, France.

“Street vendors were the most common form of vendors of the 225 tobacco points of sale. Vendors advertise tobacco products around schools and sell cigarettes and bidis via single sticks, making these products cheap and accessible to children and youth,” the study found.

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It also stated that vendors display tobacco products in ways that are appealing to children and youth and utilize sales techniques such as discounting products and distributing free samples.

“The tobacco industry must be held accountable for their aggressive advertising efforts around our children’s schools. Our schools are not safe so long as the tobacco industry continues to try and lure our children into buying their deadly products,” Bhavna B Mukhopadhyay, Chief Executive, Voluntary Health Association of India said. (IANS)