An #OpenSource, low-cost multinuclear #NMR #spectrometer operating in the mT field regime:
-high spectral resolution
-arbitrary #RF pulse programming
-requires #LabVIEW
-cost: k$ 20 (mainly PXI waveform generator & digitizer alone)
-cost could be driven down by half using a home-built RF amplifier made with high-power operational amplifiers
#NOpenAccess paper: https://doi.org/10.1016/j.jmr.2021.107076
#DIYbio #DIYchem #chemistry #analytics #ULF #spectroscopy
Designing & building a low-cost portable #OpenSource FT-NMR #spectrometer:
https://doi.org/10.1016/j.crci.2019.07.001
#DIYbio #DIYchem #chemistry #lab #instruments #NMR #spectroscopy
"Very old bottles of whisky have sold for more than £2m. But bottles which are that expensive are devalued when you open them to test a sample and check they are authentic."
Dr. Graham Bruce + his team @uniofstandrews.bsky.social are using #laser #spectroscopy to identify counterfeit whiskey. 🥃
RE: https://bsky.app/profile/did:plc:ofdhex3di7y5eod5kkjbvo7t/post/3lrfjcrbark2n
Near-infrared spectroscopy as a diagnostic screening tool for lethal chytrid fungus in eastern newts
Weekly Update from the Open Journal of Astrophysics – 07/06/2025
It’s Saturday so once again it’s time for the weekly update of papers published at the Open Journal of Astrophysics. Since the last update we have published two new papers, which brings the number in Volume 8 (2025) up to 69 and the total so far published by OJAp is now up to 304.
The two papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.
The first paper to report is “Chemical Abundances in the Leiptr Stellar Stream: A Disrupted Ultra-faint Dwarf Galaxy?” by Kaia R. Atzberger (Ohio State University) and 13 others based in the USA, Germany, the UK, Sweden, Australia, Canada and Brazil. This one was published on 2nd June 2025 and is in the folder marked Astrophysics of Galaxies. It presents a spectroscopic study of stars in a stellar stream suggesting that the stream originated by the accretion of a dwarf galaxy by the Milky Way.
The overlay is here:
You can read the final accepted version on arXiv here.
The second paper is “Scaling Laws for Emulation of Stellar Spectra” by Tomasz Różański (Australian Nastional University) and Yuan-Sen Ting (Ohio State University, USA). This was published yesterday, i.e. on 6th June 2025, and is in the folder Instrumentation and Methods for Astrophysics. The paper discusses certain scaling models and their use to achieve optimal performance for neural network emulators in the inference of stellar parameters and element abundances from spectroscopic data.
The overlay is here:
You can find the officially-accepted version of the paper on arXiv here.
That’s the papers for this week. I’ll post another update next weekend.
As a postscript I have a small announcement about our social media. Owing to the imminent demise of Astrodon, we have moved the Mastodon profile of the Open Journal of Astrophysics to a new instance, Fediscience. You can find us here. The old profile currently redirects to the new one, but you might want to update your links as the old server will eventually go offline.
#arXiv241017312v2 #arXiv250318617v2 #AstrophysicsOfGalaxies #DiamondOpenAcccess #InstrumentationAndMethodsForAstrophysics #MilkyWay #neuralNetworks #OpenJournalOfAstrophysics #spectroscopy #stellarSpectra #StellarStreams #TheOpenJournalOfAstrophysics
We are so excited to attend NAM29 in Atlanta next week!
Stop by our booth#324 to explore the innovative world of lab XAFS and XES.
Can't make it? Visit us at https://bit.ly/4gJMMDa for more info.
#XAFS #XAS #spectroscopy #MRSSpring #scienceandtechnology #Seattle
Cheap Is Good On Average, Could Be Better Dept:
#Video
#Spectroscopy
Bimodal video imaging platform predicts #HyperSpectral frames from RGB video
Via #PhysOrg…as always see the paper DOI
https://phys.org/news/2025-05-bimodal-video-imaging-platform-hyperspectral.html
Hi NMR spectroscopy friends,
Apologies for the silent running.
< UPDATE :
Aside from engineering the remaining features in ELEMENTS, we have also been navigating through some opportunities that have come our way.
... more news soon!
: END >
#bioinformatics #biology #biochemistry #biophysics #chemistry #CompChem #metabolomics #NMR #NMRChat #NMROnline #physics #spectroscopy #StructuralBiology
A set of interference optics used in #Raman #spectroscopy must perform cohesively as a unit to successfully detect the desired Raman signal above the background noise level. Expertise in optical interference design, coupled with highly precise thin-film deposition technology, results in the most advanced optics available. Learn more: https://ilphotonics.com/chroma-supplies-key-optics-for-raman-spectroscopy/
What are we measuring at easyXAFS?
Rapid scans of Cu K-edge.
Measurement time of 5 mins per sample.
Visit us @ https://bit.ly/4gJMMDa
#spectroscopy #xanes #easyXAFS #XAFS
#chemtwitter
#XAS
#analyticalchemistry
Total Solar Eclipse of 1869 was a pivotal moment in the devlopment of American "physical astronomy" (now astrophysics). Thank you, Rebecca Charbonneau for your elequont summary of the article I recently published with Tom Hockey.
https://ww2.aip.org/history/the-total-solar-eclipse-of-1869-and-american-astrophysics
#astronomy #astrophysics #histsci #spectroscopy #solareclipse #Navy #USNO
It's our last day at NSLS-II and CFN User Meeting!
Stop by our booth to explore the innovative world of lab XAFS and XES.
Can't make it? Visit us at https://bit.ly/4gJMMDa for more info.
South Fork Instruments partners with ITPhotonics to introduce advanced Polispec spectrophotometers, expanding measurement solutions across Americas industrial, agricultural, and chemical sectors. Cutting-edge technology meets comprehensive analytical capabilities. #Spectroscopy #Innovation
Galaxy is a caricature of #Spectroscopy.
After some time I finally published a new release of my #julia package to process data from #spectroscopy (#raman, #infrared...). Check the new version of Spectra.jl, that includes many new functions, including cool peak fitting features!! https://charlesll.github.io/Spectra.jl/stable/index.html #science
Introduction to spectroscopy ｜ Intermolecular forces and properties ｜ AP Chemistry ｜ Khan Academy (2020)
>> ...
NMR Online - ELEMENTS: The FREE web NMR spectroscopy software suite
■ v1.00 // REUBEN
-- [coming soon]
Even though we've taken a break from #NMRchat, we've not stopped making connections and engineering our free #NMR software suite.
! More news soon.
_ end transmission //
>> ...
#bioinformatics #biology #biochemistry #biophysics #chemistry #CompChem #metabolomics #NMROnline #physics #spectroscopy #StructuralBiology
Diffuse correlation #spectroscopy allows label-free, noninvasive investigation of microvascular dynamics deep within tissue, such as cerebral blood flow (CBF). A newly developed system reveals CBF with better sensitivity - learn more: www.spiedigitallibra... #Neuorscience #Neurophotonics
