Drx Gayatri

06/02/2021

https://lifehack1032.blogspot.com/2021/02/l.html?m=1

इस गर्मी में बालों के झड़ने को रोकने के लिए क्या तरक़ीब लगाया जा सकता है? यदि आप अपने बालों को चमकदार और प्राकृतिक र.....

06/02/2021

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इस गर्मी में बालों के झड़ने को रोकने के लिए क्या तरक़ीब लगाया जा सकता है? यदि आप अपने बालों को चमकदार और प्राकृतिक र.....

29/02/2020

A team has have designed compounds that block the replication of coronaviruses, as well as other disease-causing viruses, in the lab. The compounds have not yet been tested in people.

08/02/2020

06/10/2017

Vitamin D reduces risk of hospitalisation for asthma attacks

Taking oral vitamin D supplements as well as standard asthma medication halves the rate of asthma attacks requiring hospital attendance, and cuts the likelihood an asthma attack will require treatment with systemic steroids by almost a third.

25/09/2017

Happy world 🌏 pharmacist day.

21/09/2017

Octlantis is the name of the underwater site built by octopuses where they communicate with each other by posturing, chasing or colour changes.

New Delhi: Scientists from the University of Illinois in the US have discovered an underwater city off the east coast of Australia which belongs to octopuses.
Yes, you have heard it right.
Octlantis is the name of the underwater site built by octopuses, a home of upto 15 gloomy ones, where they communicate with each other by posturing, chasing or colour changes.
It is the second gloomy octopus settlement found in the area, and the discovery sheds light on the theory that octopuses are not necessarily loners.
The first gloomy octopus site was found in Jervis Bay off the east coast of Australia in 2009.
The new site is located just a few hundred meters away from the first site, and has been dubbed Octlantis.
The site is about 10 to 15 metres under the water's surface and is about 18 metres in length and four metres wide, researchers said.
It is composed of a few patches of exposed rock and beds of discarded shells from prey animals. A total of 13 occupied and 10 unoccupied octopus dens - holes excavated into sand or shell piles - were found at the site, they said.
Researchers placed four cameras at the new site to film for a day, recording 10 hours of footage that showed numerous social interactions among the inhabitants.
The number of octopuses observed at the site ranged from 10 to a high of 15.

12/09/2017

Insects can see with much higher resolution than thought
London | Insects have much better vision and can see in far greater detail by generating images of higher resolution than previously thought, scientists say.
It has been long believed that insects can not see fine images. This is because their compound eyes typically consist of thousands of tiny lens-capped ‘eye-units’, which together should capture a low-resolution pixelated image of the surrounding world.
Researchers from the University of Sheffield in the UK have now discovered that insect compound eyes can also generate surprisingly high-resolution images, and that this has much to do with how the photo receptor cells inside the compound eyes react to image motion.
To record these movements inside intact insect eyes during light stimulation, the researchers had to build a microscope with a high-speed camera system.
They also found that the way insect compound eye samples an image is tuned to its natural visual behaviours.
By combining their normal head/eye movements – as they view the world in saccadic bursts – with the resulting light- induced microscopic photo receptor cell twitching – insects, such as flies can resolve the world in much finer detail than was predicted by their compound eye structure, giving them hyperacute vision, researchers said.
The team found that photo receptors resolve small moving objects, even at high speeds, far better than predicted by compound eye optics and reveal the mechanisms behind this remarkable hyperacuity.
“By using electro physiological, optical and behavioural assays with mathematical modelling we have demonstrated that fruit flies (Drosophila) have much better vision than scientists have believed for the past 100 years,” said Mikko Juusola, professor at University of Sheffield.
From humans to insects, all animals with good vision, irrespective of their eye shape or design, see the world through fast saccadic eye movements and gaze fixations, said Juusola.
“Our results suggest that by adapting the way photo receptor cells sample light information to saccadic eye movements and gaze fixations, evolution works towards optimising the visual perception of animals,” Juusola added.
The study was published in the journal eLife.

02/09/2017

New way to mix water and oil identified🙇🙅

London: Oily molecules, which normally repel water, can be dissolved in the liquid when the two are squeezed together under extreme pressure, a study suggests.
Understanding the mixing properties could help find ways of replacing expensive and hazardous solvents used in the chemical industry, researchers said.
It could also help provide new insights into conditions at the bottom of the ocean or in the outer solar system, they said.
Researchers at University of Edinburgh in the UK applied high pressure to tiny containers filled with water and methane, creating conditions similar to the intense pressure found on the ocean floor or inside the planets Uranus and Neptune.
By compressing water and methane together, scientists have been able to gain insights into how the chemicals interact.
Methane is often used in experiments to study the properties of substances like oil that repel water ? called hydrophobic molecules.
The new findings suggest it may be possible to mix other hydrophobic molecules with water in a similar way.
The team squeezed methane and water molecules between two ultra-sharp diamonds and compressed them by bringing the two anvil points together.
The diamond anvil was used to apply pressures of up to 20,000 Bars - 20 times greater than the pressure at the bottom of the Mariana trench, the deepest part of the world's oceans.
Under a microscope, methane - much like oil - appears as large droplets in water at normal pressure, demonstrating that the substances do not mix.
However, the team found the droplets disappeared at high pressures, indicating that the methane had dissolved.
Researchers think this happens because methane molecules shrink as pressure is increased, while water molecules stay largely the same.
This could allow compacted methane molecules to fit between the much larger water molecules, enabling them to mix, researchers said.
"These exciting findings shed light on how water- repelling substances behave under high pressures, such as those found at the ocean floor or inside planets," said John Loveday from University of Edinburgh.
"This could have a huge range of applications, from replacing expensive and environmentally hazardous industrial solvents to modelling planetary bodies like Saturn's largest moon, Titan," Loveday added.
The study was published in the journal Science Advances.