Connect with us

Bizzare & Odd

Scientists Have Developed a Way to Make Wood as Strong as Steel

Scientists have developed a new type of “super wood” that is more than 10 times stronger and tougher than normal wood – and this innovation could potentially become a natural and inexpensive substitute for steel and other materials.

Key to the new wood’s superpowers is a special chemical treatment followed by a heated compression process. The resulting chemical bonds make the wood strong enough to one day be used in buildings and vehicles.

It could even take a turn in new armour plating – the researchers fired bullet-like projectiles at their new super wood and found they got lodged in the material rather than blasting their way through, as they did with standard-strength wood.

“This new way to treat wood makes it 12 times stronger than natural wood and 10 times tougher,” says senior researcher Liangbing Hu, from the University of Maryland.

“This could be a competitor to steel or even titanium alloys, it is so strong and durable. It’s also comparable to carbon fibre, but much less expensive.”

“It is both strong and tough, which is a combination not usually found in nature,” adds another of the team, Teng Li from the University of Maryland.

“It is as strong as steel, but six times lighter. It takes 10 times more energy to fracture than natural wood. It can even be bent and moulded at the beginning of the process.”

The new process used here has two steps. First, natural wood is boiled in a mix of sodium hydroxide and sodium sulphite, which is actually similar to the process made to create wood pulp for paper.

Next, the wood goes through a compression phase to collapse the walls between individual cells. Heat is added to encourage new chemical bonds while the wood continues to be compressed.

Those processes are able to strip out certain polymers to allow the new wood to reform while also keeping other polymers essential to the wood’s strength.

The strengthening ultimately comes from large numbers of hydrogen atoms bonding to nanofibres of cellulose, already naturally in the structure of the wood.

The chemical reactions are quite complex, but the procedure itself is actually pretty simple and inexpensive – and because wood literally grows on trees, it’s a promising option for replacing steel, titanium alloys, and other materials in certain situations.

The process has been shown to work on several different varieties of wood as well.

The finished super wood is strong, tough, and light, as we’ve already mentioned, but it’s also impressively dense, resistant to compression, hard and scratch-resistant, and even inherently protected against moisture.

As well as fitting it to aircraft and cars, the new super wood could also be used in furniture, allowing fast-growing woods like balsa or pine to replace denser but slower-growing options such as teak.

There’s a lot more work to do before you’ll see a wooden jumbo jet rolling down the runway though.

One of the next steps is to scale up and speed up the process of producing this new wood – though the researchers say that shouldn’t pose too much of a problem.

“It is particularly exciting to note that the method is versatile for various species of wood and fairly easy to implement,” says engineering scientist Huajian Gao from Brown University in Rhode Island, who wasn’t involved in the study.

“The [published] paper provides a highly promising route to the design of lightweight, high performance structural materials, with tremendous potential for a broad range of applications where high strength, large toughness and superior ballistic resistance are desired.”

The research has been published in Nature.

Read More On This At ScienceAlert – Latest

Continue Reading
Advertisement
Comments

Bizzare & Odd

Scientists Show That People Absorb Energy From Others

Many people claim to have felt how someone “steals” their energy or they feel exhausted by being in their presence.

Does he explain psychic vampirism?

A biological research team at the University of Bielefeld has made an amazing discovery: Plants can extract an alternative source of energy from other plants. This finding could have a major impact on the future of bioenergy by providing evidence that people extract, in the same way, energy from others, as a kind of “psychic vampire”.

Professor Olaf Kruse and his team studied a plant called  Chlamydomonas reinhardtii, which not only carries out the process of photosynthesis, but can also absorb energy from other plants to stay active. Studies suggest that our physical bodies are like sponges, absorb what is in the environment.

Kruse cultivated microscopic algae capable of absorbing energy from other plants and around them when they lack them. As he writes in Nature . “It is the first time that this behavior is confirmed in a plant organism. These algae can digest cellulose, contradicting all the previous notes. To a certain extent, what we are seeing are plants that feed on plants. “

Following a similar line, the psychologist, specialist in healing energy, Olivia Bader-Lee, ensures that when energy studies advance in the coming years, you can see that this also happens among people.

Flowers need water and light to grow and people are no different. Our physical bodies are like sponges, absorbing from the environment. “This explains – in his opinion – why there are certain people who feel uncomfortable in specific groups where there is a mixture of energy and emotions”.

Something similar can be experienced when we are in a natural environment and we can feel how the whole body gains in vitality. This contact with vegetation has been lost over time, however, it can recover and people can find new ways to heal each other. 

Source link

Continue Reading

Bizzare & Odd

New Research on the Theory that Octopuses are Aliens

The controversial theory that mysterious and biologically complex octopus is so unique that it had to come from another planet just got a scientific paper backing it.

“Thus the possibility that cryopreserved Squid and/or Octopus eggs, arrived in icy bolides several hundred million years ago should not be discounted as that would be a parsimonious cosmic explanation for the Octopus’ sudden emergence on Earth circa 270 million years ago.”

OK, “should not be discounted” is not exactly a bet-your-life savings-on-it endorsement, but it’s still a big deal. In a paper entitled “Cause of Cambrian Explosion – Terrestrial or Cosmic?” published in the Progress in Biophysics and Molecular Biology journal, 33 scientists researching the cause of the Cambrian Explosion – the mysterious point in Earth’s history when single-cell organisms were suddenly overshadowed by complex animals – linked the panspermia or cosmic cause to the equally mysterious and sudden appearance of octopuses.

“The transformative genes leading from the consensus ancestral Nautilus to the common Cuttlefish to Squid to the common are not easily to be found in any pre-existing life form – it is plausible then to suggest they seem to be borrowed from a far distant “future” in terms of terrestrial evolution, or more realistically from the cosmos at large. One plausible explanation, in our view, is that the new genes are likely new extraterrestrial imports to Earth – most plausibly as an already coherent group of functioning genes within (say) cryopreserved and matrix protected fertilized Octopus eggs.”

“Cryopreserved and matrix protected” sounds like a Superman origin story with creatures sent by another civilization to populate the galaxy (let’s take a moment to remember Margot Kidder, who played Lois Lane to Christopher Reeve’s movie Superman and passed away this week), but the paper leans more towards the idea that Earth received a bombardment of comets and asteroids that could have been carrying organisms that somehow managed to survive the cold, the radiation and the long trip. Only a complex species could devise a way to do this … an advanced species with a really big brain like … an octopus?

Yes, that seems to be the flying octopus in the panspermian ointment of this particular paper. It singles out octopuses as an (or possibly the only) advanced species that sent preserved eggs during the same period that it speculates asteroids and comets were involuntarily bringing other hardy cells and viruses en masse to ignite the Cambrian Explosion some 540 million years ago. “Speculates” because there’s no physical proof yet of the real cause of the Cambrian Explosion – so panspermia, climate change, evolution and others are in play.

If they’re an advanced species, do they know about this?

Octopuses are a special and highly unusual species that can edit their own RNA and slow down their evolution – a process that science can’t explain yet. It’s interesting that many scientists think the idea of intentional panspermia as their origin on Earth “should not be discounted.” Does this mean octopuses are aliens? Only an eight-legged, squishy Jor-El knows for sure.

Source link

Continue Reading

Bizzare & Odd

Here’s Why Google’s New ‘Smartphone Addiction’ Features Aren’t Based on Science –

Google wants you to stop using the term FOMO.

Instead of complaining about your fear of missing out, the search engine giant would like you to celebrate – “JOMO,” the joy of missing out. And it hopes a bunch of new features geared at preventing you from feeling addicted to your devices will help.

It’s all part of an initiative that Google unveiled at this week’s Google I/O developer conference called “Digital Wellbeing”.

Intended to free Android users from the tether of their smartphones, the strategy includes features that allow users to do things like track the time they spend on social media, block distracting notifications, and make their screens less vibrant around bedtime.

But it’s a big question whether the strategy will actually do any good. The features don’t have much basis in science.

Dashboard tells you how often you check your phone

Google Dashboard(Google)

One of the primary new features in the Digital Wellbeing initiative is called Dashboard.

Dashboard shows you how frequently you check your phone or tablet, how much time you spend overall on your devices, and even how much time you spend within individual apps such as Facebook, YouTube, or Instagram.

Dashboard appears to be a reaction to the spate of recent stories that suggest that spending time on social media is universally bad for us.

Some of those reports have claimed that Facebook and Instagram in particular are making us depressed and even “eroding” our brains.

While such claims make for good headlines, there’s little-to-no good research to back them up. Most of the studies that have been done so far suffer from significant shortcomings.

Some are looking at too few people to reach conclusions that are statistically significant, while others were conducted by the very companies they’re studying or by researchers with clear agendas, which represent conflicts of interest that can cast doubts on results.

Some other studies suggest use of devices may be contributing to an existing problem but don’t establish that they’re causing a problem by themselves.

Andrew Przybylski, a senior research fellow at the Oxford Internet Institute, has attempted to replicate some of the studies that suggest a strong tie between social-media use and depression.

However, when he used larger sets of people in well-controlled environments, he failed to duplicate their results. Instead, he found either no link or one that was so small, he found it laughable.

“It is literally the lowest quality of evidence that you could give that people wouldn’t laugh you out of the room,” Przybylski told Business Insider in March.

Last year, Przybylski co-authored a study published in the journal Psychological Science in which he examined the effect of screen-time on a sample of more than 120,000 British teens who used their devices for social media, streaming, and playing games.

The data suggested a shocking conclusion: screen-time isn’t harmful for the vast majority of teens. In fact, it’s sometimes helpful – especially when teens are using it for two to four hours per day.

“Overall, the evidence indicated that moderate use of digital technology is not intrinsically harmful and may be advantageous,” Przybylski wrote in the paper.

For Dashboard to actually be beneficial, Google or someone else would first need to demonstrate that there’s some type of relationship between our overall wellbeing and how we’re using our devices and apps.

Simply showing which apps we’re using and for how long likely isn’t going to do us a lot of good on its own.

Placing your phone face-down will quiet notifications

Another big Digital Wellbeing feature offers an easy way to block notifications.

When you place your phone face-down on a surface, it will automatically go into its “do not disturb” mode. The idea behind the new feature is that fewer alerts will mean less anxiety and more tranquility.

There is a growing amount of research that hints that getting constantly flooded with a barrage of beeps and flashes reduces our productivity and increases anxiety. No surprise there.

But there aren’t any studies that indicate snoozing our devices’ notifications will help us feel better.

When researchers have attempted to solve the anxiety problem by muting notifications, it didn’t seem to work. In fact, some people actually felt worse.

In a study presented last month at the annual conference of the American Psychological Association, researchers including Duke University behavioural economist Dan Ariely found that people who had the notifications from their devices sent in clusters of several at a time said they felt less stressed and happier than people who received them in the usual way, where they arrive sporadically throughout the day.

But the people who got their alerts in clusters also felt less stressed and happier than people who didn’t get any notifications at all.

“Participants who did not receive notifications experienced higher levels of anxiety and fears of missing out,” the researchers wrote. “These findings highlight mental costs inherent in today’s notification systems (or of abandoning them).”

Wind Down puts your phone in grayscale

Android p wind down mode(YouTube/Google)

Google designed its other big Digital Wellbeing feature to be used at bedtime.

Wind Down drains the colour from your Android device’s screen, so that it displays everything as a shade of grey. The rational behind the feature is similar to that behind Apple’s Night Shift feature, which changes an iPhone’s colour scheme from one tinged with bright blue light to one imbued with orange light.

Night Shift is actually based on some scientific research. Blue light, which is also given off by the sun, is nearly the brightest light in the visible spectrum.

In humans, blue light depresses the production of melatonin, a key hormone our brains use to tell our bodies to start preparing for sleep. That’s something you don’t want to be doing at night, especially as you’re heading to bed.

Unlike Night Shift, though, Wind Down doesn’t have much research behind it. No one has really scientifically studied how removing colour from a display affects users’ attention, productivity, sleep, or mood.

All we have are anecdotal reports from a couple of users who’ve willingly experimented on themselves with the feature and claimed it helped them.

So feel free to try to find joy in missing out, but don’t rely on a host of new Google apps to do it.

This article was originally published by Business Insider.

Continue Reading

Trending