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The Marty Lounge>Science is Cool....
Fish 09:43 PM 05-21-2012
This is a repository for all cool scientific discussion and fascination. Scientific facts, theories, and overall cool scientific stuff that you'd like to share with others. Stuff that makes you smile and wonder at the amazing shit going on around us, that most people don't notice.

Post pictures, vidoes, stories, or links. Ask questions. Share science.

This is in support of the Penny 4 NASA project. If you enjoy anything you learned from this thread, consider making a donation and signing the petition.

http://www.penny4nasa.org/

Why should I care?:


[Reply]
Otter 10:06 AM 01-27-2021

My kind of news day:

"Geologist Finds Rare Formation Inside Rock That Looks Exactly Like Cookie Monster on Sesame Street" pic.twitter.com/rKftbLw804

— Dr. Jacqueline Antonovich (@jackiantonovich) January 23, 2021

[Reply]
Hydrae 10:15 AM 01-27-2021
Originally Posted by Otter:
You can see the holes they drilled into the one to make the eyeball. I suspect the same is true for the other one as well.

I have seen (and own) quite a few geodes (and thundereggs if you are familiar with those) and have never seen one with a hole to the outside. If it had a hole then the inside would not have formed.
[Reply]
Otter 11:14 AM 01-27-2021
Originally Posted by Hydrae:
You can see the holes they drilled into the one to make the eyeball. I suspect the same is true for the other one as well.

I have seen (and own) quite a few geodes (and thundereggs if you are familiar with those) and have never seen one with a hole to the outside. If it had a hole then the inside would not have formed.
I don't much about geology so I'm easily fooled in that category. To be honest, when I first saw the picture I thought they were sushi rolls.
[Reply]
Otter 03:45 PM 02-20-2021
If these didn't come from NASA I'd swear they were Photoshoped....

https://www.nasa.gov/mission_pages/j...ges/index.html
[Reply]
Fish 01:36 AM 02-25-2021
Yale scientists repair injured spinal cord using patients’ own stem cells

Intravenous injection of bone marrow derived stem cells (MSCs) in patients with spinal cord injuries led to significant improvement in motor functions, researchers from Yale University and Japan report Feb. 18 in the Journal of Clinical Neurology and Neurosurgery.

For more than half of the patients, substantial improvements in key functions — such as ability to walk, or to use their hands — were observed within weeks of stem cell injection, the researchers report. No substantial side effects were reported.

The patients had sustained, non-penetrating spinal cord injuries, in many cases from falls or minor trauma, several weeks prior to implantation of the stem cells. Their symptoms involved loss of motor function and coordination, sensory loss, as well as bowel and bladder dysfunction. The stem cells were prepared from the patients’ own bone marrow, via a culture protocol that took a few weeks in a specialized cell processing center. The cells were injected intravenously in this series, with each patient serving as their own control. Results were not blinded and there were no placebo controls.

Yale scientists Jeffery D. Kocsis, professor of neurology and neuroscience, and Stephen G. Waxman, professor of neurology, neuroscience and pharmacology, were senior authors of the study, which was carried out with investigators at Sapporo Medical University in Japan. Key investigators of the Sapporo team, Osamu Honmou and Masanori Sasaki, both hold adjunct professor positions in neurology at Yale.

Kocsis and Waxman stress that additional studies will be needed to confirm the results of this preliminary, unblinded trial. They also stress that this could take years. Despite the challenges, they remain optimistic.

“Similar results with stem cells in patients with stroke increases our confidence that this approach may be clinically useful,” noted Kocsis. “This clinical study is the culmination of extensive preclinical laboratory work using MSCs between Yale and Sapporo colleagues over many years.”

“The idea that we may be able to restore function after injury to the brain and spinal cord using the patient’s own stem cells has intrigued us for years,” Waxman said. “Now we have a hint, in humans, that it may be possible.”
[Reply]
Fish 01:46 AM 02-25-2021
Two fighter pilots passed out over Nevada last year. Software saved them both.

In separate incidents, F-16 aviators were rendered unconscious, but a ground-collision avoidance system righted the aircrafts.

On January 23 of last year, a pilot flying a single-seat F-16 over Nevada lost consciousness. Around 6 months later, on July 16, another pilot operating the same type of fighter jet, also in Nevada, passed out as well. Both of them would have almost certainly been killed were it not for built-in software that took over the controls before they crashed.

Both pilots experienced an aviation phenomenon called G-LOC, which stands for G-induced loss of consciousness, and both were operating in the Nevada Test and Training Range. And in each case, the onboard software system saved the aviators’ lives, according to the Air Force.

The software that saved them is known as Automatic Ground Collision Avoidance System, or AGCAS, and in the January instance, it engaged when the jet was about 2,600 feet above ground level. In the July incident, the software activated at about 4,000 above the deck.

The Air Force Safety Center explained via email to Popular Science that in both cases, “AGCAS is credited with saving the pilots’ lives.”

The Safety Center added: “In both incidents, the pilots were able to regain consciousness during the AGCAS pull-up and they assisted in the recovery of the aircraft; however, their actions alone would not have been in time to prevent collision with the ground.”

[...]
[Reply]
Otter 05:33 PM 02-26-2021

[Reply]
Otter 06:50 AM 03-06-2021
NZ to trial world-first commercial long-range, wireless power transmission

If I was in charge I would demand that the people implementing this live right in between these two towers. Also, I think I see potential for a Predator sequel in this pic.



https://newatlas.com/energy/long-ran...zealand-emrod/

A New Zealand-based startup has developed a method of safely and wirelessly transmitting electric power across long distances without the use of copper wire, and is working on implementing it with the country's second-largest power distributor.

The dream of wireless power transmission is far from new; everyone's favorite electrical genius Nikola Tesla once proved he could power light bulbs from more than two miles away with a 140-foot Tesla coil in the 1890s – never mind that in doing so he burned out the dynamo at the local powerplant and plunged the entire town of Colorado Springs into blackout.

Tesla's dream was to place enormous towers all over the world that could transmit power wirelessly to any point on the globe, powering homes, businesses, industries and even giant electric ships on the ocean. Investor J.P. Morgan famously killed the idea with a single question: "where can I put the meter?"

It has taken 120 years, but New Zealand company Emrod appears to have finally convinced a major power distributor to have a crack at going wireless in a commercial capacity. Powerco, the second-biggest distributor in New Zealand, is investing in Emrod, whose technology appears to be able to shift large amounts of electricity much more efficiently, between any two points that can be joined with line-of-sight relays.

"We’re interested to see whether Emrod’s technology can complement the established ways we deliver power," said Powerco’s Network Transformation Manager Nicolas Vessiot. "We envisage using this to deliver electricity in remote places, or across areas with challenging terrain. There’s also potential to use it to keep the lights on for our customers when we’re doing maintenance on our existing infrastructure."

Emrod currently has a working prototype of its device, but will build another for Powerco, with plans to deliver by October, then spend several months in lab testing before moving to a field trial. The prototype device will be capable of delivering "only a few kilowatts" of power, but can easily be scaled up. "We can use the exact same technology to transmit 100 times more power over much longer distances," said Emrod founder and serial entrepreneur Greg Kushnir. "Wireless systems using Emrod technology can transmit any amount of power current wired solutions transmit."

The system uses a transmitting antenna, a series of relays and a receiving rectenna (a rectifying antenna capable of converting microwave energy into electricity). Each of these components appear in these images to simply look like big ol' squares on poles. Its beams use the non-ionizing Industrial, Scientific and Medical band of the radio spectrum, including frequencies commonly used in Wi-Fi and Bluetooth.

Unlike Tesla's globally-accessible free power dream, the power here is beamed directly between specific points, with no radiation around the beam, and a "low power laser safety curtain" immediately shuts down power transmission before any object, like a bird, drone, power thief or helicopter, can touch the main beam. There will be no difficulties this time working out where to place the meter.

Emrod says it works in any atmospheric conditions, including rain, fog and dust, and the distance of transmission is limited only by line of sight between each relay, giving it the potential to transmit power thousands of kilometers, at a fraction of the infrastructure costs, maintenance costs and environmental impact a wired solution imposes.

Indeed, Emrod sees wireless transmission as a key enabling technology for renewable power, which is often generated far from where it's needed. This kind of system could be terrific for getting the products of offshore and remote renewable energy generation into the city grids without the need for giant storage batteries and the like.

It'll also be handy in certain unplanned outage events; a truck can be fitted out with a rectenna, and then driven anywhere in visual range of a relay to create a temporary wireless power connection.

The company has been liaising with the Radio Spectrum Management authorities in New Zealand throughout its development process, with a view to meeting every safety standard even once the technology scales right up to high power levels, a process Kushnir says has also helped Emrod develop guidelines for the companies that will be using the technology.

We've contacted Emrod to ask more about efficiency, the size, shape and state of the current prototype, future plans and what indeed would happen if you stuck your hand in the middle of the beam, and will bring you more information when we can.
[Reply]
Fish 02:05 AM 03-14-2021
Scientists clone the first U.S. endangered species

A black-footed ferret was duplicated from the genes of an animal that died more than 30 years ago.



CHEYENNE, Wyo. — Scientists have cloned the first U.S. endangered species, a black-footed ferret duplicated from the genes of an animal that died over 30 years ago.

The slinky predator named Elizabeth Ann, born Dec. 10 and announced Thursday, is cute as a button. But watch out — unlike the domestic ferret foster mom who carried her into the world, she’s wild at heart.

“You might have been handling a black-footed ferret kit and then they try to take your finger off the next day,” U.S. Fish and Wildlife Service black-footed ferret recovery coordinator Pete Gober said Thursday. “She’s holding her own.”

Elizabeth Ann was born and is being raised at a Fish and Wildlife Service black-footed ferret breeding facility in Fort Collins, Colorado. She’s a genetic copy of a ferret named Willa who died in 1988 and whose remains were frozen in the early days of DNA technology.

Cloning eventually could bring back extinct species such as the passenger pigeon. For now, the technique holds promise for helping endangered species including a Mongolian wild horse that was cloned and last summer born at a Texas facility.

“Biotechnology and genomic data can really make a difference on the ground with conservation efforts,” said Ben Novak, lead scientist with Revive & Restore, a biotechnology-focused conservation nonprofit that coordinated the ferret and horse clonings.

[...]
[Reply]
Baby Lee 02:33 AM 03-14-2021
Originally Posted by Otter:
NZ to trial world-first commercial long-range, wireless power transmission
The charge [npi] that wireless was killed because it couldn't be metered is cynical. It's other biggest drawback is losses/inefficiency.

If your criticism is the overall level of energy production and the byproducts of said production, wireless means you are producing more for convenience sake, and just releasing it back into the 'ether' through transmission losses.

This is less of a problem with renewables, because you are essentially rounding up energy available around you [wind, light, water], directing it for potential useful purpose, and whatever doesn't get used or gets wasted is just released back to nature.

Think of it like this loose analogy. Suppose you lived by a lake and wanted access to water in your little village. Wireless is somewhat like putting a big pump in the lake and spraying water over the village, so it's just perpetually 'raining' throughout the village. All you need to do to get water is set a pot outside your house and wait, and supposedly the excess will return to the water table and eventually the lake. It's more convenient than plumbing and sewers for every house, but it's also less efficient.
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