Pelican Parts Forums
Page 7 of 11 « First « Prev 5 6 7 8 9 Next » Last »
Show 40 post(s) from this thread on one page

Pelican Parts Forums (http://forums.pelicanparts.com/)
-   Off Topic Discussions (http://forums.pelicanparts.com/off-topic-discussions/)
-   -   Cool Science Story Of The Day [Continuing Thread] (http://forums.pelicanparts.com/off-topic-discussions/744238-cool-science-story-day-continuing-thread.html)

jyl 11-05-2017 07:48 PM
I don't work with biotech companies any more, but am still interested in new drug discovery.

Immune therapy is the hottest area in cancer research today. The drugs are derived from an improving understanding of how cancer cells evade detection and destruction by our immune system. Our immune systems are powerful, so much so that they can kill us if they are too active or attack things that they should not attack. We have various mechanisms to turn off the immune response. Cancer cells can mimic those mechanisms. Immune therapy involves suppressing those mechanisms or engineering immune cells that attack particular forms of cancer even when they are using those mechanisms. A few immune treatments have been approved by the FDA in the past two years. They work really well in some patients and not at all in others. As scientists try to understand what makes one patient respond to a treatment so he lives, and another not respond and die, they have been discovering a relationship with the gut biome.

The gut biome is all the microbes that live in your intestinal organs. We support huge numbers of microbes, and are starting to learn that, far from being dirty parasite to be eliminated, they are essential to our bodies' function. This will be one of the most exciting areas of research in coming decades, in part because it is easy to test hypotheses by transplanting microbes from one patient to another, or initially from one rat to another. The linked article illustrates one recent finding.

https://arstechnica.com/science/2017/11/gut-bacteria-may-make-or-break-your-chances-of-cancer-treatment-working/

I'm interested in seeing how the drug companies approach gut biome research. They need to be able to develop a patented drug. Simply learning how to cure patients won't bring profits, if anyone can do it. For example, there is a microbe called C. Difficile which is a major killer of hospitalized patients. It grows rampant in patients whose gut biome (aka gut flora) has been decimated by antibiotics, leaving C. Difficile with little competition. The conventional treatment for C. Diff is more antibiotics designed to kill C. Diff. These can suppress an outbreak, but leave the gut biome decimated and the patient at risk of re-infection, which often happens since C. Diff is very hard to eradicate from surfaces. Another way to treat C. Diff is to take fecal matter from a healthy person and introduce it into the gut of the patient, prompting his gut biome to rebuild. Since there is no way to patent this treatment or make it into a pharmaceutical, fecal transplants haven't gotten the attention, research, and marketing necessary to make the treatment widely available. If it isn't a drug, there isn't money in it.

IROC 11-10-2017 08:25 AM
Not quite to the "cool science" point yet, but we lifted our shiny new 70,000 lbs Inner Reflector Plug (beryllium reflector/liquid hydrogen moderators/heavy water cooling) into a test vessel this morning (for vacuum leak testing). There is only about .375" of clearance all the way down.

http://forums.pelicanparts.com/uploa...1510334611.JPG

http://forums.pelicanparts.com/uploa...1510334611.JPG

RonDent 11-10-2017 11:26 AM
I hate vacuum leak checking. Better you than me.

scottmandue 11-10-2017 12:24 PM
Authored by a co-worker, we didn't 'date' but I often took her out to dinner because she was fascinating to talk to... and she was so smart the rest of the guys were afraid to date her. ;)

https://www.ligo.caltech.edu/news/ligo20171016

More from her facebook page:

<iframe width="560" height="315" src="https://www.youtube.com/embed/EtIkOjq0_50" frameborder="0" allowfullscreen></iframe>

kach22i 11-10-2017 12:35 PM
Cool video, gave me something to watch while I charge car battery. Darn cold snap.

motion 11-15-2017 07:49 PM
Was reading this article tonight: Nasa forecast: Which cities will flood as ice melts? - BBC News

It struck me: Why would different cities be affected by differently melting ice masses? It had to be because "sea level" is not constant.

Digging further, I found this: Sea Level not the same everywhere; up to 300 foot variation. - John Englander - Sea Level Rise Expert

Sea level varies by up to 300' globally! That is amazing.

I was in Thailand last week during the full moon and saw the extreme low tide. It was awesome to explore the ocean floor hundreds of meters out from the normal tide line. Lots of marine life that you don't normally get to see.

masraum 11-27-2017 08:27 PM
I thought this was pretty interesting. Not so much science as engineering.

<iframe width="853" height="480" src="https://www.youtube.com/embed/hUhisi2FBuw" frameborder="0" gesture="media" allowfullscreen></iframe>

Evans, Marv 11-27-2017 08:44 PM
That was soooo interesting I couldn't stop watching! Very well done.

kach22i 11-28-2017 04:56 AM
So much science and know how goes into the making, yet the contents of the beverage can are not typically what an intelligent knowledgeable person would consume.

I hope the epoxy coating on the inside doesn't one day turn out to be poisonous, otherwise we are all done for.

kach22i 11-29-2017 04:58 AM
Life Goes Deeper
https://aeon.co/essays/deep-beneath-the-earths-surface-life-is-weird-and-wonderful
https://d2e1bqvws99ptg.cloudfront.ne...set-image-.jpg
Quote:
The amount of water in the subsurface is considerable. Globally, the freshwater reservoir in the subsurface is estimated to be up to 100 times as great as all the available fresh water in the rivers, lakes and swamps combined.

This water, ranging in ages from seven years to 2 billion years, is being intensely studied by researchers because it defines the location and scope of deep life.

We know now that the deep terrestrial subsurface is home to one quintillion simple (prokaryotic) cells. That is two to 20 times as many cells as live in all the open ocean.

By some estimates, the deep biosphere could contain up to one third of Earth’s entire biomass....................
Things that I've read in the past if I recall correctly is that ground water is only 4-percent of all fresh water, and 90 percent of Earth's bio-mass is in the soil including the seabed. I'm not sure how accurate my memory is, nor how accurate this article above is. Thing is, we are still learning and discovering, and that is pretty cool.

GH85Carrera 12-12-2017 12:17 PM
The Remarkable "Curvature Blindness" Illusion - Neuroskeptic

This is cool. Another optical illusion. Even looking at the image close, it looks like sharp lines at first.

http://forums.pelicanparts.com/uploa...1513113413.jpg

GH85Carrera 12-14-2017 07:58 AM
99-million-year-old ticks sucked the blood of dinosaurs | Science | AAAS

GH85Carrera 12-19-2017 06:50 AM
Interstellar object may hold 'alien' water - BBC News

Just a bizarre looking asteroid.

kach22i 12-29-2017 05:55 AM
Posted by Tim De Chant on Fri, 17 Mar 2017
Super-Safe Glass Battery Charges in Minutes, Not Hours
Super-Safe Glass Battery Charges in Minutes, Not Hours — NOVA Next | PBS
Quote:
Who says that only young scientists make breakthroughs?

For John Goodenough, the 94-year-old co-inventor of the lithium-ion battery, lightning appears to have struck twice. He recently published his latest battery design, the lithium-glass battery, an entirely solid cell that has a strikingly long list of admirable characteristics.
Will a New Glass Battery Accelerate the End of Oil?
By Mark Anderson
Posted 3 Mar 2017
https://spectrum.ieee.org/energywise/energy/renewables/does-new-glass-battery-accelerate-the-end-of-oil
https://spectrum.ieee.org/image/Mjg3MTUxMA.jpeg
Quote:
John Goodenough, coinventor of the lithium-ion battery, heads a team of researchers developing the technology that could one day supplant it.
Quote:
But the development is going to be with the battery manufacturers. I don’t want to do development. I don’t want to be going into business. I’m 94. I don’t need the money.”

jyl 01-19-2018 03:47 AM
NASA has developed a fission reactor the size of a desk wastebasket that produces about 1 kW or about 1.3 HP. A larger model - but not that much larger - produces about 10 kW or 13 HP. For decades . . .

https://www.popsci.com/nuclear-reactors-mars

https://www.reuters.com/article/us-space-nuclear/u-s-tests-nuclear-power-system-to-sustain-astronauts-on-mars-idUSKBN1F72T8

Which means that atomic cars are coming!

kach22i 01-19-2018 05:29 AM
Quote:
Originally Posted by GH85Carrera (Post 9854026)
That's because it's an ancient spaceship. ;)

https://ichef.bbci.co.uk/news/660/cp...em99255496.jpg

Oh, it's "Artwork".............................who knows what it really looks like?

Quote:
Artwork: Observations of 'Oumuamua noted its unusual elongated shape

kach22i 01-19-2018 05:34 AM
Quote:
Originally Posted by jyl (Post 9891965)
NASA has developed a fission reactor the size of a desk wastebasket that produces about 1 kW or about 1.3 HP. A larger model - but not that much larger - produces about 10 kW or 13 HP. For decades . . .

https://www.popsci.com/nuclear-reactors-mars
By "car" do you mean RC models?

Quote:
The Kilopower reactor is designed to operate at two sizes, a one kilowatt (1,000 watt) model and a 10 kilowatt model.

“Your toaster uses about a kilowatt,” Pat McClure, Kilopower project lead at Los Alamos, says with a laugh.“In your average household, you use about 5 KW on average a day, at any given time. Realize, though, that this is a lot of energy for NASA. At NASA they’re used to tens to hundreds of watts. So to have a kilowatt or 10 kilowatts is a lot of electricity.”
I'm thinking they could use solar panels and get the same energy, no clouds on Mars.

However, don't they have storms that can tear up solar panels and wind generators - or is that just in the movies?

kach22i 01-19-2018 05:36 AM
Quote:
“Mars is a very difficult environment for power systems, with less sunlight than Earth or the moon, very cold nighttime temperatures, very interesting dust storms that can last weeks and months that engulf the entire planet,” said Steve Jurczyk, associate administrator of NASA‘s Space Technology Mission Directorate.

“So Kilopower’s compact size and robustness allows us to deliver multiple units on a single lander to the surface that provides tens of kilowatts of power,” Jurczyk added.
Okay, now I get it.

I should have read the second article first.

IROC 01-19-2018 08:03 AM
Quote:
Originally Posted by jyl (Post 9891965)
NASA has developed a fission reactor the size of a desk wastebasket that produces about 1 kW or about 1.3 HP. A larger model - but not that much larger - produces about 10 kW or 13 HP. For decades . . .

https://www.popsci.com/nuclear-reactors-mars

https://www.reuters.com/article/us-space-nuclear/u-s-tests-nuclear-power-system-to-sustain-astronauts-on-mars-idUSKBN1F72T8

Which means that atomic cars are coming!
We (and by "we" I mean ORNL a long time ago) designed, built and tested a nuclear reactor to power an airplane (Aircraft Reactor Experiment). Crazy stuff. I can still see the towers used to hoist a reactor up in the air for shielding tests...

Crowbob 02-02-2018 12:17 PM
I was wandering around the Yucatan jungle one time and there were all kinds of heavily overgrown ancient Mayan ruins. The guide said every little pump, mound or 'mountain' down there was a ruin yet to be uncovered...

Sprawling Maya network discovered under Guatemala jungle - BBC News

john70t 02-02-2018 06:37 PM
Quote:
Originally Posted by kach22i (Post 9865061)
Posted by Tim De Chant on Fri, 17 Mar 2017
Super-Safe Glass Battery Charges in Minutes, Not Hours
Super-Safe Glass Battery Charges in Minutes, Not Hours — NOVA Next | PBS
So why isn't this guy on the front page of media instead of Section8 Musk?


China's seven warring states united by the first emperor.
Monetary trade units, weights and bounds and measures, weapons and interchangeable parts, language and printed news, all standardized.
The unknown pyramid of Qin Shi Huang.
Terracotta army. Active rivers of mercury. Golden heavens of the planetary systems on the ceiling.
http://forums.pelicanparts.com/uploa...1517628558.jpg

kach22i 02-02-2018 07:01 PM
February 9, 2017
The Lavish Qin Shi Huang Tomb – Built for Immortality
https://www.historicmysteries.com/qin-shi-huang-tomb-first-emperor-china/
https://www.historicmysteries.com/wp...-1024x527.jpeg
Quote:
The Qin Shi Huang tomb lies deep within this mound. Source: Wikimedia Commons, Sylvannus.
https://www.historicmysteries.com/wp...0-1024x582.png
Quote:
Imaging of Qin Shi Huang tomb hidden within burial mound. Source: Youtube, China’s Megatomb Revealed, Dewei Ku.

https://en.wikipedia.org/wiki/Mausoleum_of_the_First_Qin_Emperor
https://upload.wikimedia.org/wikiped...ramids.svg.png
Quote:
Comparison of approximate profiles of the Mausoleum of the First Qin Emperor with some notable pyramidal or near-pyramidal buildings. Dotted lines indicate original heights, where data are available. In its SVG file, hover over a pyramid to highlight and click for its article.

jyl 02-11-2018 02:31 PM
Far UV light shown to kill viruses (e.g. flu) without harming humans.

A Special UV Light Could Kill Airborne Flu Virus | Time

IROC 02-12-2018 03:45 AM
We installed a 70,000 lbs super-critical hydrogen moderator/beryllium reflector on Saturday. No more than .5" of clearance around it all the way down. Dose rates at the plane of the opening of the hole it went into were ~50 R/hr. This was the first time this has ever been done. I am the lead engineer on this installation and will get some mileage out of this... :)

http://forums.pelicanparts.com/uploa...1518439254.JPG

http://forums.pelicanparts.com/uploa...1518439254.JPG

http://forums.pelicanparts.com/uploa...1518439410.JPG

http://forums.pelicanparts.com/uploa...1518439410.JPG

NY65912 02-12-2018 02:21 PM
https://www.scientificamerican.com/article/stronger-than-steel-able-to-stop-a-speeding-bullet-mdash-it-rsquo-s-super-wood/

RSBob 02-12-2018 09:27 PM
Just heard on the national news that next year a new pill maybe released that can reduce the symptoms of the flu to 1 day. Amazing stuff.

kach22i 02-20-2018 05:29 AM
I was just going to post that article, someone in another car forum recently posted it.

Stronger Than Steel, Able to Stop a Speeding Bullet—It’s Super Wood!
By Sid Perkins on February 7, 2018
https://www.scientificamerican.com/article/stronger-than-steel-able-to-stop-a-speeding-bullet-mdash-it-rsquo-s-super-wood/
Quote:
Simple processes can make wood tough, impact-resistant—or even transparent

GH85Carrera 04-11-2018 09:32 AM
This is just cool!

<iframe width="854" height="480" src="https://www.youtube.com/embed/nr5Pj6GQL2o" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>

kach22i 05-10-2018 12:36 PM
Researchers create a real cloaking device
https://www.yahoo.com/finance/news/researchers-create-real-cloaking-device-130850890.html
Quote:
Hanford created an acoustic metamaterial that deflected sound waves under water, a difficult feat. In testing she and the team were able to place the material in water and measure sound waves pointed at it. The resulting echoes in the water suggested that the sound waves did not bounce off or around the material. This means the new material would be invisible to sonar.
http://forums.pelicanparts.com/uploa...1525984568.jpg

masraum 05-10-2018 07:44 PM
Quote:
Originally Posted by IROC (Post 9922974)
We installed a 70,000 lbs super-critical hydrogen moderator/beryllium reflector on Saturday. No more than .5" of clearance around it all the way down. Dose rates at the plane of the opening of the hole it went into were ~50 R/hr. This was the first time this has ever been done. I am the lead engineer on this installation and will get some mileage out of this... :)

http://forums.pelicanparts.com/uploa...1518439254.JPG

http://forums.pelicanparts.com/uploa...1518439254.JPG

http://forums.pelicanparts.com/uploa...1518439410.JPG

http://forums.pelicanparts.com/uploa...1518439410.JPG
That's really freakin' cool. I'd like to buy you a beer and talk, but probably from the other end of the bar, far away from all of those rampant neutrons. :eek: :D

IROC 05-11-2018 03:24 AM
Quote:
Originally Posted by masraum (Post 10032817)
That's really freakin' cool. I'd like to buy you a beer and talk, but probably from the other end of the bar, far away from all of those rampant neutrons. :eek: :D
Yeah, we started this job a couple of days after Christmas and just finished it up yesterday. Most of time was spent connecting the new piping for the super-critical hydrogen moderators (multi-layer, vacuum-jacketed piping that has to be cold-shocked with liquid nitrogen and leak tested after every weld). The neutrons are traveling at about 90% of the speed of light when they are produced, so we pass them thru liquid hydrogen to slow them down.

Here we are installing the some of the final shield blocks yesterday:

http://forums.pelicanparts.com/uploa...1526037787.JPG

masraum 05-11-2018 04:34 AM
Quote:
Originally Posted by IROC (Post 10032987)
Yeah, we started this job a couple of days after Christmas and just finished it up yesterday. Most of time was spent connecting the new piping for the super-critical hydrogen moderators (multi-layer, vacuum-jacketed piping that has to be cold-shocked with liquid nitrogen and leak tested after every weld). The neutrons are traveling at about 90% of the speed of light when they are produced, so we pass them thru liquid hydrogen to slow them down.

Here we are installing the some of the final shield blocks yesterday:

http://forums.pelicanparts.com/uploa...1526037787.JPG
Very cool!

kach22i 05-17-2018 08:12 AM
Asteroid the size of a city block just gave Earth a close shave
https://www.nbcnews.com/mach/science/asteroid-size-city-block-give-earth-close-shave-ncna873906
Quote:
A fast-moving asteroid the size of a city block gave Earth a close shave today, zooming safely past at 6:05 p.m. EDT at a distance of about 126,000 miles. That's about half the distance from the Earth to the moon and the closest approach the asteroid has made in nearly 300 years, EarthSky.org reported.

The space rock, known as 2010 WC9, was moving at almost 29,000 miles per hour as it passed. It has a diameter of 60 to 134 meters, or roughly 200 to 400 feet — "as big across as a city block," Dr. Erin Ryan, an asteroid expert at NASA's Goddard Space Flight Center in Greenbelt, Maryland, told NBC News MACH in an email.......................
Good to know.
Quote:
An asteroid roughly the size of 2010 WC9 collides with Earth only about once every 6,000 years, Chodas said. And as Dr. Amy Mainzer, another asteroid expert at the Jet Propulsion Laboratory, told MACH in December, “There are no objects that have been identified that are known to be on a collision course with Earth.”

Porchdog 05-22-2018 08:13 AM
https://www.youtube.com/watch?v=k0tnqPmwWvk

A relatively short, not to scientific description of the Hawaii volcano, it's history and how they know.

I thought this was just fascinating.

kach22i 07-25-2018 10:06 AM
Evidence detected of lake beneath the surface of Mars
https://www.cnn.com/2018/07/25/world/mars-subsurface-water-lake-evidence/index.html
http://forums.pelicanparts.com/uploa...1532541890.jpg
Quote:
(CNN) A lake of liquid water has been detected by radar beneath the southern polar ice cap of Mars, according to a new study by Italian researchers from the Italian Space Agency, published Wednesday in the journal Science.

Evidence was gathered by the Mars Advanced Radar for Subsurface and Ionosphere Sounding instrument, also known as MARSIS, on the European Space Agency's Mars Express spacecraft.

Between May 2012 and December 2015, MARSIS was used to survey the Planum Australe region, which is in the southern ice cap of Mars. It sent radar pulses through the surface and polar ice caps and measured how the radio waves reflected back to Mars Express..................

But how reliable are these detections?

Outside experts have not been able to confirm these findings with other radar detections, like SHARAD, the Shallow Radar sounder onboard the Mars Reconnaissance Orbiter.

kach22i 07-26-2018 02:17 PM
SIGNS IN THE SKIES Blood moon will appear above Mars during longest lunar eclipse this century on Friday in extremely rare cosmic alignment
This week will see the moon's creamy sheen change to a menacing red - while Mars will shine brighter than it has for 15 years

https://www.thesun.co.uk/tech/6857098/blood-moon-lunar-eclipse-friday-mars-when-what-time/
https://www.thesun.co.uk/wp-content/...0&h=500&crop=1
Quote:
Its colour will change and darken from the normal creamy silver sheen to a menacing blood red.

The phenomenon struck terror into our ancestors and is still seen as a sign of doom in some parts of the world today.

In fact it is caused by sunlight being filtered through the Earth's atmosphere so that red colours predominate when it reaches the lunar surface.

Meanwhile, in a rare cosmic alignment, Mars will add to the spectacle by appearing directly below the blood moon at close to its maximum brightness.
https://www.thesun.co.uk/wp-content/...trip=all&w=960
Quote:
A glorious view of Jupiter in the south-west will also be visible on Friday and amateur astrologers will have a chance of catching the International Space Station sailing overhead.

Blood moon 2018 will be longest lunar eclipse of the century. Will eclipse be visible in U.S.?
https://www.nj.com/weather/index.ssf/2018/07/blood_moon_2018_lunar_eclipse_july_in_us.html
https://image.nj.com/home/njo-media/...4d69f8f199.jpg
Quote:
When will the July lunar eclipse be visible?

Here's the bad news for people living in the United States. The longest lunar eclipse of the century will NOT be visible anywhere in North America.

That's because the eclipse will happen during daylight hours on our continent. Other places around the world, where the sky will be dark, will get to see this awesome sky show.

Those places are Africa, Asia, Australia, Europe and South America, according to experts from NASA. So, if you happen to be visiting one of those places this weekend, you’re in luck!

Blood Moon 2018: Longest Total Lunar Eclipse of Century Occurs July 27
https://www.space.com/41007-blood-moon-2018-longest-lunar-eclipse-guide.html
Quote:
The longest total lunar eclipse of the 21st century takes place this Friday, July 27.

The total phase of the "blood moon" eclipse of July 27 will last 1 hour and 43 minutes, during which Earth's natural satellite will turn a spectacular red or ruddy-brown color. From start to finish, the entire celestial event will last nearly 4 hours.

The eclipse won't be visible to viewers in North America, except via webcasts. But observers in much of Africa, the Middle East, southern Asia and the Indian Ocean region will get an eyeful, given cooperative weather, according to lunar scientist Noah Petro, of NASA's Goddard Space Flight Center in Greenbelt, Maryland. [In Photos: The Rare Super Blue Blood Moon Eclipse of 2018]
Why you won't be able to see the blood moon eclipse in Michigan
https://www.freep.com/story/news/local/michigan/2018/07/18/july-lunar-eclipse-blood-moon/795761002/
Quote:
While NASA has provided live streams of eclipses in the past, an agency spokeswoman told the Free Press it did not yet have plans to do so this year, but that might change.

Other websites, like timeanddate.com, are planning to provide a livestream of the event. That stream will kick off at 2 p.m. Detroit time, and the eclipse will be at its greatest point at 4:21 p.m.

If you'd prefer to watch an eclipse with your own eyes, you're in luck. The next lunar eclipse will occur over North America on Jan. 21 and Michigan will be able to see the entire thing.

kach22i 07-29-2018 04:38 AM
7/24/2018
Next-Gen Nuclear Is Coming—If Society Wants It
https://www.wired.com/story/next-gen-nuclear/
https://media.wired.com/photos/5b565...ticnuclear.jpg
Quote:
“The question was, ‘Can we do better than the conventional reactors that were commercialized 60 years ago?” Irish recalled. “And the answer was, ‘Absolutely.’”

Irish was so convinced that this new reactor was a great investment that he bet his career on it. Nearly a decade later, Irish is the CEO of New York City-based Terrestrial Energy, a company that expects to have a molten-salt reactor online before 2030.

Terrestrial is far from alone. Dozens of nuclear startups are popping up around the country, aiming to solve the well-known problems with nuclear power — radioactive waste, meltdowns, weapons proliferation, and high costs.

Willem Fick 08-02-2018 03:00 AM
Would love to get my hands on this:

World's biggest titanium powder printer.

IROC 08-09-2018 08:34 AM
Kind of specific to my neck of the science world, but:

Quote:
SNS completes full neutron production cycle at record power level

OAK RIDGE, Tenn., Aug. 9, 2018—The Spallation Neutron Source at the Department of Energy’s Oak Ridge National Laboratory has reached a new milestone by operating a complete neutron production run cycle at 1.3 megawatts.

Achieving the record power level with a remarkable 94 percent accelerator beam availability establishes a new baseline of operation as well as a path to operate reliably at higher powers. Increased power offers researchers the ability to conduct faster scientific analyses using neutrons on more types of materials.

SNS, a DOE Office of Science User Facility, began operations in 2006 and is currently the world’s most powerful pulsed accelerator-based neutron scattering facility, used by scientists to reveal fundamental properties and behaviors of energy and materials at the atomic scale. Neutron contributions at SNS have resulted in advances in electronic devices, improved drug delivery, and stronger building materials for transportation infrastructure.

The facility accelerates protons at nearly 90 percent the speed of light down a linear accelerator and into a ring that compresses the proton pulse by a factor of 1,000. The protons collide with a liquid mercury target, which creates a “spall” of neutrons that flow to powerful instruments where scientists measure the neutrons’ interactions with a variety of materials.

Continuous and reliable operations at 1.3MW during SNS’s latest 12-week production cycle were enabled by a more robust stainless-steel target module and a series of improvements in the accelerator systems that allowed higher proton current and energy. SNS has reached power levels as high as 1.4 MW, but this is the first time the facility has sustained levels as high as 1.3MW over a predicted timeframe.

Oak Ridge scientists and engineers have extended the lifetime of SNS targets by studying the performance of previous targets and making adjustments such as the injection of small bubbles of helium gas into the target vessel’s liquid mercury flow—an improvement that reduces the impact stresses caused by the proton beam.

In 2016, SNS implemented a Target Management Plan to capture performance data and incorporate design improvements in new targets, which are currently installed approximately three times a year. Since the plan’s implementation, each target has performed reliably according to its intended design.

As planned, SNS will operate the next neutron production cycle at 1.4MW.

SNS is a DOE Office of Science User Facility. UT-Battelle manages ORNL for the DOE’s Office of Science. The Office of Science is the single largest supporter of basic research in the physical sciences in the United States, and is working to address some of the most pressing challenges of our time. For more information, please visit http://science.energy.gov/.
My group is responsible for target design. Here's a picture of the target when we retracted it from the Core Vessel. It's in a hot cell as the dose rates on contact are about 40,000 rads/hr...

http://forums.pelicanparts.com/uploa...1533832382.JPG

kach22i 08-12-2018 07:39 AM
Why all world maps are wrong
https://www.youtube.com/watch?v=kIID5FDi2JQ
<iframe width="560" height="315" src="https://www.youtube.com/embed/kIID5FDi2JQ" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>
Quote:
Vox
Published on Dec 2, 2016
Making accurate world maps is mathematically impossible.


All times are GMT -8. The time now is 09:30 AM.
Page 7 of 11 « First « Prev 5 6 7 8 9 Next » Last »
Show 40 post(s) from this thread on one page

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website


DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.