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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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Study Shows That 3 Cups of Coffee or Tea Daily May Cut Risk of Stroke

Are you an ardent coffee or tea lover, but advised to avoid caffeinated beverages due to your heart conditions Cheer up, drinking upto three cups of coffee or tea a day is safe as well as reduce irregular heartbeat and stroke risk, a study says.

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Are you an ardent coffee or tea lover, but advised to avoid caffeinated beverages due to your heart conditions Cheer up, drinking upto three cups of coffee or tea a day is safe as well as reduce irregular heartbeat and stroke risk, a study says.

A single cup of coffee contains about 95 mg of caffeine. It acts as a stimulant to the central nervous system and works to block the effects of adenosine — a chemical that causes atrial fibrillation (AFib).

AFib is the most common heart rhythm disorder, causes the heart to beat rapidly and skip beats, and if left untreated, can cause strokes.

The results suggest that caffeine intake of up to 300 mg per day may be safe for arrhythmic patients.

Jasmine Green tea and its benefits
Jasmine Green tea. Pixabay

“There is a public perception, often based on anecdotal experience, that caffeine is a common acute trigger for heart rhythm problems,” said lead author Peter Kistler, Director at Melbourne’s Alfred Hospital.

But, “caffeinated beverages such as coffee and tea have long-term anti-arrhythmic properties mediated by antioxidant effects and antagonism of adenosine,” he added.

For the review, published in the journal JACC: Clinical Electrophysiology, the team analysed multiple population-based studies.

A meta-analysis of 228,465 participants showed that AFib frequency decreasing by 6 per cent in regular coffee drinkers, and an analysis of 115,993 patients showed a 13 per cent reduced risk.

Nestle Pays Starbucks $7.1bn to Sell its Coffee.
Nestle Paid Starbucks $7.1bn to Sell its Coffee. Pixabay

Another study of 103 post-heart attack patients who received an average of 353 mg of caffeine a day showed improvement in heart rate and no significant arrhythmias — or abnormal heart rhythms, that cause the heart to beat too fast, slow or unevenly.

However, in two studies, where patients drank at least 10 cups and nine cups of coffee per day, showed an increased risk for ventricular arrhythmias (VAs) — a condition in which the lower chambers of the heart (ventricles) beat very quickly.

Also Read: 5 Health Benefits of Drinking Tea

On the other hand, patients with pre-existing heart conditions who consumed two or more energy drinks — that contains concentrated caffeine — per day reported palpitations within 24 hours. (IANS)

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Affects of Prenatal Marijuana on Baby

If you smoke marijuana during your pregnancy, your baby could be at high risk of being born with a low birth weight as well as influencing behavior problems, researchers have warned. The findings, published in the journal Child Development, suggests that prenatal marijuana use can have consequences on infant's weight and can influence behavior problems, especially when combined with tobacco use.