research

Even Cheaper Solar Cells

- Adam Clare

We recently reached the point that solar power is cheaper than nuclear power and now some researchers at the University of Toronto have found a way to make solar cells even cheaper by using nickel instead of gold.

One of the major drawbacks of most renewable energy sources is high cost. In order to see a huge rise in the use of renewable energy sources, prices must come down. In the world of solar there have recently been some major breakthroughs in cost advantages and efficiency increases. Scientists at the University of Toronto in Canada have come up with a way to reduce colloidal quantum dot solar cell prices by up to 80%, by swapping out costly conductive gold for cheap nickel.

Read more: Super Cheap Solar Cells Just Got Cheaper, Switch Gold For Nickel

Study: Sisters Protect Their Brothers

- Adam Clare

New research shows that siblings are very important and that they provide different benefits to one another. One finding that seems pretty neat is that having a sister can protect brothers from depression.

Padilla-Walker’s research stems from BYU’s Flourishing Families Projectand will appear in the August issue of the Journal of Family Psychology. The study included 395 families with more than one child, at least one of whom was an adolescent between 10 and 14 years old. The researchers gathered a wealth of information about each family’s dynamic, then followed up one year later. Statistical analyses showed that having a sister protected adolescents from feeling lonely, unloved, guilty, self-conscious and fearful. It didn’t matter whether the sister was younger or older, or how far apart the siblings were agewise.
Brothers mattered, too. The study found that having a loving sibling of either gender promoted good deeds, such as helping a neighbor or watching out for other kids at school. In fact, loving siblings fostered charitable attitudes more than loving parents did. The relationship between sibling affection and good deeds was twice as strong as that between parenting and good deeds.

Keep reading at Science Daily

And a big thank you to my sister!!!!!

A Shrew Spit Solution

- Adam Clare

Shrew spit may help in the screening of prostate, ovarian, and breast cancers. I don’t understand this one, so here it is from the CBC:

The northern short-tailed shrew, a mouse-like mammal with a long snout, is one of the world’s few venomous mammal species. With one bite, its saliva can paralyze prey.

Biochemist Jack Stewart of Mount Allison University in Sackville, N.B., set out to find out how.

Stewart spent several years luring the animals with pepperoni and trapping dozens of shrews in his rural backyard before he eventually identified the chemical in shrew saliva that causes paralysis. Researchers then purified and synthesized it.

At first, Stewart thought the chemical — called soricidin — might be a potential painkiller, because it blocked nerve transmission. When he tested it on a random cell culture that happened to be ovarian cancer cells, however, he found the cells died — which was initially a source of annoyance to him.

“Then a light bulb came on,” Stewart recalled. “Oh, they died,” he said with a laugh. “That’s a good thing in cancer.”

Read more at the CBC.

Using YouTube to Study Effects of Drugs

- Adam Clare

Researchers have noted that people like to get high and post video of themselves doing drugs. As a result some researchers are looking at YouTube videos to understand what salvia does to the brain and body. Strange, I know, but apparently these people sharing their drug trips can help us understand a little more about pharmacology.

They created a systematic coding scheme which researchers used when watching the videos. This allowed them both to categorise the effects and check that each viewer was agreeing on what they saw.

After watching 34 videos, each of which was selected to show an entire trip from the initial hit to when the effects wore off, the team categorised the effects into five main groups:

(1) hypo-movement (e.g. slumping into a slouched position, limp hands, facial muscles slack or relaxed and falling down), (2) hyper-movement (e.g. uncontrolled laughter, restlessness, touching or rubbing the face without apparent reason or thought), (3) emotional effects included being visibly excited or afraid, (4) speech effects (unable to make sense, problems with diction, problems with fluency, inability to speak, and having problems recalling words) and finally (5) heating effects related to being hot or heated (e.g. flushed, or user makes a statement about being hot or sweating).

Read the rest at Mind Hacks.

Thanks Trevor!

Self-Cleaning Solar Panels

- Adam Clare 2 Comments

Solar panels work best outside and as a result nature tends to get dust, dirt, grime, and such on the panels which lower the efficiency of the panels. Now some researchers have accidentally found a way to have self-cleaning solar panels to cut back on maintenance costs and increase efficiency.

Molecular microbiology and biotech professor Ehud Gazit and his team research ways to control peptide atoms and molecules. People with Alheimer’s disease have a peptide called beta amyloid found in the plaques that form in their brains. While working on self-assembling nano-tubules in the lab, the scientists made an interesting discovery.

They got the peptides to self-assemble in a vacuum, forming tiny tubes that look like grass. The resulting nanocoating repels dust and water, which would be useful for protecting desert solar arrays, reducing maintenance. Plus, the material has potential as a super-capacitor, which could give lithium batteries more kick. The assembly technique is detailed in Nature Nanotechnology

Keep reading about it at Discovery.

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