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I'm going to have a few days' trail next week and kind of worried that my devices may run out of power. I want a portable power bank that I can put it in my backpack and keep my devices charged. Do you have a good power bank to suggest?
6 Replies
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1785 views
Solar cell project creates hydrogen fuel and bypasses batteries
http://www.unc.edu/campus-updates/researchers-harness-energy-during-day-for-use-at-night/
[h=1]Researchers harness energy during day for use at night[/h]Solar energy has long been used as a clean alternative to fossil fuels such as coal and oil, but it could only be harnessed during the day when the sun's rays were strongest. Researchers led by Tom Meyer at the Energy Frontier Research Center at UNC-Chapel Hill have built a system that converts the sun's energy not into electricity but hydrogen fuel and stores it for later use, allowing us to power our devices long after the sun goes down.
"So called 'solar fuels' like hydrogen offer a solution to how to store energy for nighttime use by taking a cue from natural photosynthesis" said Meyer, Arey Distinguished Professor of Chemistry at UNC's College of Arts and Sciences. "Our new findings may provide a last major piece of a puzzle for a new way to store the sun's energy – it could be a tipping point for a solar energy future."
The new system designed by Meyer and colleagues at UNC and with Greg Parson's group at NC State University does exactly that. Known as a dye-sensitized photoelectrosynthesis cell, or DSPEC, it generates hydrogen fuel by using the sun's energy to split water into its component parts. After the split, hydrogen is sequestered and stored, while the byproduct, oxygen, is released into the air.
"But splitting water is extremely difficult to do," said Meyer. "You need to take four electrons away from two water molecules, transfer them somewhere else, and make hydrogen, and, once you have done that, keep the hydrogen and oxygen separated. How to design molecules capable of doing that is a really big challenge that we've begun to overcome."
Meyer had been investigating DSPECs for years at the Energy Frontier Research Center at UNC and before. His design has two basic components: a molecule and a nanoparticle. The molecule, called a chromophore-catalyst assembly, absorbs sunlight and then kick starts the catalyst to rip electrons away from water. The nanoparticle, to which thousands of chromophore-catalyst assemblies are tethered, is part of a film of nanoparticles which shuttles the electrons away to make the hydrogen fuel.
However, even with the best of attempts, the system always crashed because either the chromophore-catalyst assembly kept breaking away from the nanoparticles or because the electrons couldn't be shuttled away quickly enough to make hydrogen.
To solve both of these problems, Meyer turned to the Parsons group at NCSU to use a technique that coated the nanoparticle, atom by atom, with a thin layer of a material called titanium dioxide. By using ultra-thin layers, the researchers found that the nanoparticle could carry away electrons far more rapidly than before, with the freed electrons available to make hydrogen. They also figured out how to build a protective coating that keeps the chromophore-catalyst assembly tethered firmly to the nanoparticle, ensuring that the assembly stayed on the surface.
With electrons flowing freely through the nanoparticle and the tether stabilized, Meyer's new system can turn the sun's energy into fuel while needing almost no external power to operate and releasing no greenhouse gases. What's more, the infrastructure to install these sunlight-to-fuel converters is in sight based on existing technology. A next target is to use the same approach to reduce carbon dioxide, a greenhouse gas, to a carbon-based fuel such as formate or methanol.
"When you talk about powering a planet with energy stored in batteries, it's just not practical," said Meyer. "It turns out that the most energy dense way to store energy is in the chemical bonds of molecules. And that's what we did – we found an answer through chemistry."
By Thania Benios, University Relations.
Published January 14, 2014.
http://www.unc.edu/campus-updates/researchers-harness-energy-during-day-for-use-at-night/
[h=1]Researchers harness energy during day for use at night[/h]Solar energy has long been used as a clean alternative to fossil fuels such as coal and oil, but it could only be harnessed during the day when the sun's rays were strongest. Researchers led by Tom Meyer at the Energy Frontier Research Center at UNC-Chapel Hill have built a system that converts the sun's energy not into electricity but hydrogen fuel and stores it for later use, allowing us to power our devices long after the sun goes down.
"So called 'solar fuels' like hydrogen offer a solution to how to store energy for nighttime use by taking a cue from natural photosynthesis" said Meyer, Arey Distinguished Professor of Chemistry at UNC's College of Arts and Sciences. "Our new findings may provide a last major piece of a puzzle for a new way to store the sun's energy – it could be a tipping point for a solar energy future."
Tom Meyer, Arey Distinguished Professor of Chemistry at UNC's College of Arts and Sciences.
In one hour, the sun puts out enough energy to power every vehicle, factory and device on the planet for an entire year. Solar panels can harness that energy to generate electricity during the day. But the problem with the sun is that it goes down at night—and with it the ability to power our homes and cars. If solar energy is going to have a shot at being a clean source of powering the planet, scientists had to figure out how to store it for night-time use.The new system designed by Meyer and colleagues at UNC and with Greg Parson's group at NC State University does exactly that. Known as a dye-sensitized photoelectrosynthesis cell, or DSPEC, it generates hydrogen fuel by using the sun's energy to split water into its component parts. After the split, hydrogen is sequestered and stored, while the byproduct, oxygen, is released into the air.
"But splitting water is extremely difficult to do," said Meyer. "You need to take four electrons away from two water molecules, transfer them somewhere else, and make hydrogen, and, once you have done that, keep the hydrogen and oxygen separated. How to design molecules capable of doing that is a really big challenge that we've begun to overcome."
Meyer had been investigating DSPECs for years at the Energy Frontier Research Center at UNC and before. His design has two basic components: a molecule and a nanoparticle. The molecule, called a chromophore-catalyst assembly, absorbs sunlight and then kick starts the catalyst to rip electrons away from water. The nanoparticle, to which thousands of chromophore-catalyst assemblies are tethered, is part of a film of nanoparticles which shuttles the electrons away to make the hydrogen fuel.
However, even with the best of attempts, the system always crashed because either the chromophore-catalyst assembly kept breaking away from the nanoparticles or because the electrons couldn't be shuttled away quickly enough to make hydrogen.
To solve both of these problems, Meyer turned to the Parsons group at NCSU to use a technique that coated the nanoparticle, atom by atom, with a thin layer of a material called titanium dioxide. By using ultra-thin layers, the researchers found that the nanoparticle could carry away electrons far more rapidly than before, with the freed electrons available to make hydrogen. They also figured out how to build a protective coating that keeps the chromophore-catalyst assembly tethered firmly to the nanoparticle, ensuring that the assembly stayed on the surface.
With electrons flowing freely through the nanoparticle and the tether stabilized, Meyer's new system can turn the sun's energy into fuel while needing almost no external power to operate and releasing no greenhouse gases. What's more, the infrastructure to install these sunlight-to-fuel converters is in sight based on existing technology. A next target is to use the same approach to reduce carbon dioxide, a greenhouse gas, to a carbon-based fuel such as formate or methanol.
"When you talk about powering a planet with energy stored in batteries, it's just not practical," said Meyer. "It turns out that the most energy dense way to store energy is in the chemical bonds of molecules. And that's what we did – we found an answer through chemistry."
By Thania Benios, University Relations.
Published January 14, 2014.
TWiT Tech Podcast Network
Time for another AWESOME video from the TWIT Network!
View: https://www.youtube.com/shorts/z72cjoZP83E
Direct YouTube Link - AI Can Self-Replicate: Unplugging the Threat! #shorts
TWIT's Website
TWIT Live Feed
View: https://www.youtube.com/shorts/z72cjoZP83E
Direct YouTube Link - AI Can Self-Replicate: Unplugging the Threat! #shorts
TWIT's Website
TWIT Live Feed
0 Replies
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5 views
TWiT Tech Podcast Network
Time for another AWESOME video from the TWIT Network!
View: https://www.youtube.com/shorts/w5TOILSc_U8
Direct YouTube Link - AI Model Poisoning: The Hidden Threat on Hugging Face #shorts
TWIT's Website
TWIT Live Feed
View: https://www.youtube.com/shorts/w5TOILSc_U8
Direct YouTube Link - AI Model Poisoning: The Hidden Threat on Hugging Face #shorts
TWIT's Website
TWIT Live Feed
0 Replies
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5 views
Staff member
HERE TO HELP YOU!
Cutting Edge
Sometimes a thread gets so many posts in it that is can cause issues for the server so that why today we introduce The Song Name Game Part 3!
So let the game continue!
The last song was added by Bobby who posted...
One Meat Ball - Andrews Sisters
CONTINUE ON AND HAVE FUN! WELCOME HOME TO SATELLITEGUYS.US!
Here are the original rules for the game as posted by WebbyDude back in 2006. http://www.satelliteguys.us/threads/68645-Song-Name-Game
Just name a song title and the band who performed it. The next person does the same thing, but needs to list a song title or band name which includes a word from the previous entry. Pick songs from any genre.
Example:
Long Live Rock and Roll -- Rainbow
Rainbow in the Dark -- Dio
Another example:
Ride the Lightning -- Metallica
Lightning Strikes -- Ozzy Osbourne
Get it?
An additional note: we all know that song titles, sometimes, use profane words. Because this is a family friendly website it is advised that you clean up that title up a bit. This is accomplished by using something like sh!t instead of the real word. Thanks....
So let the game continue!
The last song was added by Bobby who posted...
One Meat Ball - Andrews Sisters
CONTINUE ON AND HAVE FUN! WELCOME HOME TO SATELLITEGUYS.US!
Here are the original rules for the game as posted by WebbyDude back in 2006. http://www.satelliteguys.us/threads/68645-Song-Name-Game
Just name a song title and the band who performed it. The next person does the same thing, but needs to list a song title or band name which includes a word from the previous entry. Pick songs from any genre.
Example:
Long Live Rock and Roll -- Rainbow
Rainbow in the Dark -- Dio
Another example:
Ride the Lightning -- Metallica
Lightning Strikes -- Ozzy Osbourne
Get it?
An additional note: we all know that song titles, sometimes, use profane words. Because this is a family friendly website it is advised that you clean up that title up a bit. This is accomplished by using something like sh!t instead of the real word. Thanks....
68495 Replies
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2670605 views
Supporting Founder
Several Dish offers showed up today in my account. Once you choose one the rest are removed. Offers were Showtime, Starz, AMC and others.
32 Replies
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1560 views
Not for me, mines has no mention of how long aka the offer period and the Terms and conditions the $0.00 is good for. All I see is one can lose $5.00 if you decide to remove it before day 31 after you add it to the account.
Pub Member / Supporter
Cutting Edge
I created this thread on the original Edgecutter Cutting Edge Forums site. It's simply a place for those to review the latest software available for those using Windows 10 and Windows 11. To date it has received 112,559 views. I have been asked by staff to continue this thread here.
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47202 views
To each there own but I've found that Windows can't do much more than Linux can. Can't have everything.
For niche use cases, yes I agree. Kali for ethical hacking and security testing, and running a Cacti server for network monitoring are the two things I have experience in. Plus thousands and thousands of other things, but for every day use I just can't see it. The owner of the GMRS repeater that I pay to access is changing the Tx DPL tones tomorrow, while Chirp is available on Linux, the software to program my MXT500 is not.To each there own but I've found that Windows can't do much more than Linux can. Can't have everything.
I run Fedora and Ubuntu in VMWare, honestly I don't care much for the UI of either of them and I don't feel like spending days/weeks to customize the UI to make it look Windows-like when I could just use Windows. The cartoonish dock at the bottom of the screen reminds me of Apple products.
As I said above, and, FWIW, I run Win11 Pro and Arch on separate 250 GB NVME drives, using F8 to select which I boot to, with a 1TB SSD for storage, accessible to both OSs and a third formatted Nvme I want to use to learn Kali. It was much faster to setup Arch than it was to strip down Windows. Windows still takes much longer to boot.
For some reason, the satelliteguys.us site is loading a lot slower than usual on both Chrome on my Asus laptop and Safari on my iPhone.
I'm also seeing longer appearances of the blue bar at the top and the "3 blue bars" loading symbol.
Is anyone else also having the same problem? Thanks in advance.
I'm also seeing longer appearances of the blue bar at the top and the "3 blue bars" loading symbol.
Is anyone else also having the same problem? Thanks in advance.
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17928 views
Remember folks... just like DNS... its always Foxbat. 
WTF… …What the Foxbat!Remember folks... just like DNS... its always Foxbat.
S
wow what a kick in the balls!!! the wife blames you when things don't work now scott's blaming youWTF… …What the Foxbat!
I know. Here's what Scott has in store for me if I get out of line:wow what a kick in the balls!!! the wife blames you when things don't work now scott's blaming you
Help, I'm a little confjused on the activation process.
I purchased the Joey 4 from Solid Signal and shipping box has Call 866 726-4282 to Avtivate new Receiver. That number is Solid Signals number.
I googled and that search said call Dish to activate. I assume that is correct unless this requires a 2 step process.
Please let me know.
Thanks
I purchased the Joey 4 from Solid Signal and shipping box has Call 866 726-4282 to Avtivate new Receiver. That number is Solid Signals number.
I googled and that search said call Dish to activate. I assume that is correct unless this requires a 2 step process.
Please let me know.
Thanks
6 Replies
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198 views
All good called Dish and new Joey 4 is activated and working.
Old Joey 2 deactivated and no need to return.
Old Joey 2 deactivated and no need to return.
S
i bought mine straight from dish as it was only $ 100.00 bucks!!! had the protection plan they came out removed and deactivated the 4k joey and activated and installed the joey 4.All good called Dish and new Joey 4 is activated and working.
Old Joey 2 deactivated and no need to return.
Supporting Founder
Pub Member / Supporter
Lifetime Supporter
Apple has finally released their Apple TV 4K with built-in Siri and a microphone so it can respond to your queries even if you don't have the remote. It also increases in price, to $299. I had been planning on updating my current Apple TV 4K streamers, but that's $600 for the two of them, and that's a pass at this point.
At $299, it had better come with 256 GB of Storage, Gigabit (or better) Ethernet, the latest HDMI tech and standards, and one year of free Apple One. But it probably won't…
At $299, it had better come with 256 GB of Storage, Gigabit (or better) Ethernet, the latest HDMI tech and standards, and one year of free Apple One. But it probably won't…
Apple TV 4K
Apple TV 4K. New Siri AI and hands-free control. Stunning picture and immersive HomePod surround sound. Works with your Apple and smart home devices.
www.apple.com
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180 views
S
. apple's been making money off of software and not hardware for a while
they all do that anyways.. ever notice your cell phone slows down when you come up for an upgrade..
. apple's been making money off of software and not hardware for a while
The new curated multiview is now live.
While on many of the sports channels and non sports channels there is a multi view option button. It will pull up a side bar with many different multi view options.
While on many of the sports channels and non sports channels there is a multi view option button. It will pull up a side bar with many different multi view options.
3 Replies
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162 views
Supporting Founder
Really excited for this season with Kentucky having a new coach and some really exciting recruits. Probably won't last long, but here's hoping this season is great.
141 Replies
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1357 views
