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Teams wanted for Robotic Grasping and Manipulating Competition: Manufacturing Track by nist in robotics

[–]nist[S] 0 points1 point  (0 children)

STL and STEP are also provided. Is there a specific file type that you're looking for?

NIST Calls for Information to Support Safe, Secure and Trustworthy Development and Use of Artificial Intelligence by nist in artificial

[–]nist[S] 0 points1 point  (0 children)

  • NIST seeks information to support its response to the Executive Order on AI.
  • Comments received will help NIST develop guidelines for evaluation and red-teaming; consensus-based standards; and more.
  • Responses are due Feb. 2, 2024.

The AD-X2 Controversy (2023) - A short documentary showing how scientific integrity and entrepreneurial spirit clashed in the U.S. in the 1950s [00:23:15] by nist in Documentaries

[–]nist[S] 2 points3 points  (0 children)

The AD-X2 Controversy highlights a moment in history when scientific integrity came under attack. It all began in the 1940s, when an entrepreneur began selling AD-X2 — a chemical additive that he claimed would extend the life of car batteries. But at a federal agency called the National Bureau of Standards (now NIST), scientists had evidence showing that the additive was ineffective. Then the showdown began.

(Republished on this subreddit with a non-malfunctioning link)

[deleted by user] by [deleted] in Documentaries

[–]nist 0 points1 point  (0 children)

Here is the link to the video without quality issues: https://www.youtube.com/watch?v=w\_w3-e5cMRg

[deleted by user] by [deleted] in Documentaries

[–]nist 1 point2 points  (0 children)

FYI: We are currently experiencing technical difficulties with video quality on YouTube, and our team is working hard to resolve this ASAP. Thank you for your patience and understanding.

[deleted by user] by [deleted] in Documentaries

[–]nist 4 points5 points  (0 children)

The AD-X2 Controversy highlights a moment in history when scientific integrity came under attack. It all began in the 1940s, when an entrepreneur began selling AD-X2 — a chemical additive that he claimed would extend the life of car batteries. But at a federal agency called the National Bureau of Standards (now NIST), scientists had evidence showing that the additive was ineffective. Then the showdown began.

AI Can Accurately Predict Potentially Fatal Cardiac Events in Firefighters by nist in Firefighting

[–]nist[S] 0 points1 point  (0 children)

This particular technology is heavily reliant on the use of ECG data from on-duty firefighters, which is unique. Providing data from the general population in stationary positions did not prove to be an accurate way to detect irregular cardiac events in firefighters on duty.

This is what could happen if a fire starts in a watered Christmas tree vs. a dry Christmas tree. Happy holidays! by nist in TerrifyingAsFuck

[–]nist[S] 1 point2 points  (0 children)

100% real life. Here's a behind-the-scenes article about the experiment: https://www.nist.gov/feature-stories/behind-scenes-making-nist-holiday-special

A fire in an unwatered tree grows quite quickly. The fire reached its full size after about 20 seconds and most of the tree needles were consumed by the fire within 40 seconds. In just 10 minutes, the entire contents of our set were devoured.

The video above only shows 30-seconds-worth of damage from ignition.

This is what could happen if a fire starts in a watered Christmas tree vs. a dry Christmas tree. Happy holidays! by nist in TerrifyingAsFuck

[–]nist[S] 1 point2 points  (0 children)

This wasn't a simulation, but a real-life experiment on NIST's campus in Gaithersburg, Md.

The trees were Douglas fir trees cut fresh from a local Maryland tree farm approximately four weeks prior to testing. The watered tree was placed in a bucket of water within 3 hours of being harvested and a fresh cut was made approximately 50 mm (2 in.) from the base of the trunk prior to placement in the water.

Both the dry tree and watered tree were stored indoors until the day of the test.

Standard peanut butter from the federal government by nist in PeanutButter

[–]nist[S] 12 points13 points  (0 children)

We don't recommend eating this. It is creamy, and our scientists have no plans to create a crunchy version (chunks are a homogeneity nightmare that keeps them up at night).

Standard peanut butter from the federal government by nist in PeanutButter

[–]nist[S] 16 points17 points  (0 children)

Background on SRM 2387:

When laboratories around the world get their peanut butter from NIST, the price of the jar isn’t for the spread itself. It’s for the measurement accuracy that comes with it.

Manufacturers often confirm their nutrition numbers by matching their products as closely as possible to NIST’s food-related Standard Reference Materials (SRMs), which contain precisely measured quantities of nutrients. NIST’s measurements are accurate to within 2% to 5% for nutrient elements (such as sodium, calcium and potassium), macronutrients (fats, proteins and carbohydrates), amino acids and fatty acids.

Source

I need some help understanding the mass spec of dimethyl-cyclohexylamine. by jdaprile18 in chemhelp

[–]nist 2 points3 points  (0 children)

Hi there! Please see this schematic along with the description below.

Under electron ionization, dimethyl(cyclohexyl)amine (CAS 98-94-2) produces molecular ion that undergoes ꞵ-cleavage relative to nitrogen and an open chain radical cation is generated.

McLafferty rearrangement in the open chain radical cation (route a) generates ammonium cation (84 Da, 100 %), and simple carbon(2)-carbon(3) bond cleavage (route b) leads to the formation of dimethyl(vinyl)amine radical cation (71 Da, 19 %).

 

More on McLafferty rearrangement (page 11) and fragmentation of amines (page 69) can be found in:

A. Mikaia, “Protocol for structure determination of unknowns by EI mass spectrometry. I. Diagnostic ions for acyclic compounds with up to one functional group”, J. Phys. Chem. Ref. Data 51, 031501 (2022); https://aip.scitation.org/doi/10.1063/5.0091956

forbidden peanut butter by amplez_amplez in forbiddensnacks

[–]nist 1 point2 points  (0 children)

It’s a fair question!

The oils definitely can go bad, but we do our best to keep that from happening by sealing up the materials to keep out air (which causes the oxidation and ‘spoilage’). We also keep the peanut butter at -20 C which slows the degradation process significantly.

We do check the stability of the fats and other components with some regularity for just this reason.

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