#spectroscopy — Public Fediverse posts

Coming up next week: Join the online #BeilsteinTalk "Probing nanostructures atom by atom: An advanced electron microscopy study" with Nasim Alem, The Pennsylvania State University 🇺🇸.

📅 May 21, 2026
🕒 3–4 pm CEST

Register for FREE 🔗 https://www.beilstein-institut.de/en/talks/nanotechnology-probing-nanostructures-atom-by-atom-an-advanced-electron-microscopy-study/?M=y

#ScanningTunnelingMicroscopy #spectroscopy #TransmissionElectronMicroscopy #TEM #AtomicForceMicroscopy #AFM #BeilsteinTalks

Making an astronomer portrait with a juicy rainbow roll 🌈

#linocut #printmaking #sciart #spectroscopy #histsci

Save the date 📅 May 21, 2026 🕒 3–4 pm CEST

Online #BeilsteinTalk "Probing nanostructures atom by atom: An advanced electron microscopy study" with Nasim Alem, The Pennsylvania State University 🇺🇸.

Register for FREE 🔗 https://www.beilstein-institut.de/en/talks/nanotechnology-probing-nanostructures-atom-by-atom-an-advanced-electron-microscopy-study/?M=y

#ScanningTunnelingMicroscopy #spectroscopy #TransmissionElectronMicroscopy #TEM #AtomicForceMicroscopy #AFM #BeilsteinTalks

📣 I'm planning to organize an online series of webinars/workshops, focused on #chemometrics and #MachineLearning for #spectroscopy (using #Python )

I'd like it to be beginner-friendly and informal.

🆓 Free registration

🏛️ Tutorial and research talks (including guest speakers and workshop sessions)

📅 Monthly or fortnightly schedule

💻 Fully online

If it sound like you may be interested, please read more and register your interest here
https://nirpyresearch.com/nirpy-webinars/

#Webinar

📣 I'm planning to organize an online series of webinars/workshops, focused on #chemometrics and #MachineLearning for #spectroscopy (using #Python )

I'd like it to be beginner-friendly and informal.

🆓 Free registration

🏛️ Tutorial and research talks (including guest speakers and workshop sessions)

📅 Monthly or fortnightly schedule

💻 Fully online

If it sound like you may be interested, please read more and register your interest here
https://nirpyresearch.com/nirpy-webinars/

#Webinar

📣 I'm planning to organize an online series of webinars/workshops, focused on #chemometrics and #MachineLearning for #spectroscopy (using #Python )

I'd like it to be beginner-friendly and informal.

🆓 Free registration

🏛️ Tutorial and research talks (including guest speakers and workshop sessions)

📅 Monthly or fortnightly schedule

💻 Fully online

If it sound like you may be interested, please read more and register your interest here
https://nirpyresearch.com/nirpy-webinars/

#Webinar

📣 I'm planning to organize an online series of webinars/workshops, focused on #chemometrics and #MachineLearning for #spectroscopy (using #Python )

I'd like it to be beginner-friendly and informal.

🆓 Free registration

🏛️ Tutorial and research talks (including guest speakers and workshop sessions)

📅 Monthly or fortnightly schedule

💻 Fully online

If it sound like you may be interested, please read more and register your interest here
https://nirpyresearch.com/nirpy-webinars/

#Webinar

📣 I'm planning to organize an online series of webinars/workshops, focused on #chemometrics and #MachineLearning for #spectroscopy (using #Python )

I'd like it to be beginner-friendly and informal.

🆓 Free registration

🏛️ Tutorial and research talks (including guest speakers and workshop sessions)

📅 Monthly or fortnightly schedule

💻 Fully online

If it sound like you may be interested, please read more and register your interest here
https://nirpyresearch.com/nirpy-webinars/

#Webinar

If your #spectroscopy dataset is small, deterministic data subdivision into training and test sets may be the way to go 🔬

The SPXY algorithm is an extension of the Kennard-Stone method that selects training samples to maximize coverage of both spectra (X) and response variable (Y) at the same time.

Here's a primer, with a #Python implementation for #NIR spectroscopy.

https://nirpyresearch.com/spxy-algorithm/

#Chemometrics #MachineLearning

If your #spectroscopy dataset is small, deterministic data subdivision into training and test sets may be the way to go 🔬

The SPXY algorithm is an extension of the Kennard-Stone method that selects training samples to maximize coverage of both spectra (X) and response variable (Y) at the same time.

Here's a primer, with a #Python implementation for #NIR spectroscopy.

https://nirpyresearch.com/spxy-algorithm/

#Chemometrics #MachineLearning

If your #spectroscopy dataset is small, deterministic data subdivision into training and test sets may be the way to go 🔬

The SPXY algorithm is an extension of the Kennard-Stone method that selects training samples to maximize coverage of both spectra (X) and response variable (Y) at the same time.

Here's a primer, with a #Python implementation for #NIR spectroscopy.

https://nirpyresearch.com/spxy-algorithm/

#Chemometrics #MachineLearning

If your #spectroscopy dataset is small, deterministic data subdivision into training and test sets may be the way to go 🔬

The SPXY algorithm is an extension of the Kennard-Stone method that selects training samples to maximize coverage of both spectra (X) and response variable (Y) at the same time.

Here's a primer, with a #Python implementation for #NIR spectroscopy.

https://nirpyresearch.com/spxy-algorithm/

#Chemometrics #MachineLearning

If your #spectroscopy dataset is small, deterministic data subdivision into training and test sets may be the way to go 🔬

The SPXY algorithm is an extension of the Kennard-Stone method that selects training samples to maximize coverage of both spectra (X) and response variable (Y) at the same time.

Here's a primer, with a #Python implementation for #NIR spectroscopy.

https://nirpyresearch.com/spxy-algorithm/

#Chemometrics #MachineLearning

Cells under the spotlight reveal their inner secrets

All living things are made of cells, and the molecular machinery within them is imperative to survival. Different…
#NewsBeep #News #Science #CA #Canada #Cell #Nutrients #Protein #Proteome #Proteomics #Ramanspectroscopy #research #RNA #Spectroscopy #students
https://www.newsbeep.com/ca/633294/

https://www.europesays.com/ie/457227/ Cells under the spotlight reveal their inner secrets #Cell #Éire #IE #Ireland #Nutrients #Protein #Proteome #Proteomics #RamanSpectroscopy #Research #RNA #Science #Spectroscopy #Students

New instance, new #introduction

#science #physics
since 2021 working on
#fiberlinks #frequency #time #transfer #reference #quantum #metrology
before that on
#biophysics #raman #spectroscopy #microscopy #biofilm #bacteria #protein #microplastics

#programming & #computing
#python (#fortran #mathematica )
#linux (not quite but almost still a newbie)
#freesoftware

Other interests:
#plants #cats #sciencefiction #fantasy #reading #writing #audiobooks #asiandramas #unplugbigtech #diday

New instance, new #introduction

#science #physics
since 2021 working on
#fiberlinks #frequency #time #transfer #reference #quantum #metrology
before that on
#biophysics #raman #spectroscopy #microscopy #biofilm #bacteria #protein #microplastics

#programming & #computing
#python (#fortran #mathematica )
#linux (not quite but almost still a newbie)
#freesoftware

Other interests:
#plants #cats #sciencefiction #fantasy #reading #writing #audiobooks #asiandramas #unplugbigtech #diday

New instance, new #introduction

#science #physics
since 2021 working on
#fiberlinks #frequency #time #transfer #reference #quantum #metrology
before that on
#biophysics #raman #spectroscopy #microscopy #biofilm #bacteria #protein #microplastics

#programming & #computing
#python (#fortran #mathematica )
#linux (not quite but almost still a newbie)
#freesoftware

Other interests:
#plants #cats #sciencefiction #fantasy #reading #writing #audiobooks #asiandramas #unplugbigtech #diday

New instance, new #introduction

#science #physics
since 2021 working on
#fiberlinks #frequency #time #transfer #reference #quantum #metrology
before that on
#biophysics #raman #spectroscopy #microscopy #biofilm #bacteria #protein #microplastics

#programming & #computing
#python (#fortran #mathematica )
#linux (not quite but almost still a newbie)
#freesoftware

Other interests:
#plants #cats #sciencefiction #fantasy #reading #writing #audiobooks #asiandramas #unplugbigtech #diday

New instance, new #introduction

#science #physics
since 2021 working on
#fiberlinks #frequency #time #transfer #reference #quantum #metrology
before that on
#biophysics #raman #spectroscopy #microscopy #biofilm #bacteria #protein #microplastics

#programming & #computing
#python (#fortran #mathematica )
#linux (not quite but almost still a newbie)
#freesoftware

Other interests:
#plants #cats #sciencefiction #fantasy #reading #writing #audiobooks #asiandramas #unplugbigtech #diday

A personal highlight for me was of course the full-scale model of the #HubbleSpaceTelescope ❤️🔭

#Hubble #Smithsonian #HST #Ganymede #Spectroscopy #STIS #Aurora #Jupiter #Museum #SpacePhysics #PlasmaPhysics #Plasma #Space #Astronomy

A personal highlight for me was of course the full-scale model of the #HubbleSpaceTelescope ❤️🔭

#Hubble #Smithsonian #HST #Ganymede #Spectroscopy #STIS #Aurora #Jupiter #Museum #SpacePhysics #PlasmaPhysics #Plasma #Space #Astronomy

A personal highlight for me was of course the full-scale model of the #HubbleSpaceTelescope ❤️🔭

#Hubble #Smithsonian #HST #Ganymede #Spectroscopy #STIS #Aurora #Jupiter #Museum #SpacePhysics #PlasmaPhysics #Plasma #Space #Astronomy

A personal highlight for me was of course the full-scale model of the #HubbleSpaceTelescope ❤️🔭

#Hubble #Smithsonian #HST #Ganymede #Spectroscopy #STIS #Aurora #Jupiter #Museum #SpacePhysics #PlasmaPhysics #Plasma #Space #Astronomy

A personal highlight for me was of course the full-scale model of the #HubbleSpaceTelescope ❤️🔭

#Hubble #Smithsonian #HST #Ganymede #Spectroscopy #STIS #Aurora #Jupiter #Museum #SpacePhysics #PlasmaPhysics #Plasma #Space #Astronomy

Scale Dependence In Remotely Sensed Biodiversity: Leveraging Continental-Scale Imaging Spectroscopy From The National Ecological Observatory Network [spatial analysis]
--
https://doi.org/10.1002/rse2.70068 <-- shared paper
--
https://doi.org/10.1038/s41559-022-01702-5 <-- shared paper
--
#spectraldiversity #spectroscopy #spatialscale #US #NEON #NationalEcologicalObservatoryNetwork #species #ecology #humanimpacts #remotesensing #biodiversity #earthobservation #GIS #spatial #mapping #scale #scale #diversity #metrics #ecosystems #spectral #richness #scaledependency #principalcompoenent #divergence #spatialanalysis #raster #topography #climate #geomorphology #regression #geostatistics #vegetation #plant #area #region #largescale #continent #forest #tree

Scale Dependence In Remotely Sensed Biodiversity: Leveraging Continental-Scale Imaging Spectroscopy From The National Ecological Observatory Network [spatial analysis]
--
https://doi.org/10.1002/rse2.70068 <-- shared paper
--
https://doi.org/10.1038/s41559-022-01702-5 <-- shared paper
--
#spectraldiversity #spectroscopy #spatialscale #US #NEON #NationalEcologicalObservatoryNetwork #species #ecology #humanimpacts #remotesensing #biodiversity #earthobservation #GIS #spatial #mapping #scale #scale #diversity #metrics #ecosystems #spectral #richness #scaledependency #principalcompoenent #divergence #spatialanalysis #raster #topography #climate #geomorphology #regression #geostatistics #vegetation #plant #area #region #largescale #continent #forest #tree

Scale Dependence In Remotely Sensed Biodiversity: Leveraging Continental-Scale Imaging Spectroscopy From The National Ecological Observatory Network [spatial analysis]
--
https://doi.org/10.1002/rse2.70068 <-- shared paper
--
https://doi.org/10.1038/s41559-022-01702-5 <-- shared paper
--
#spectraldiversity #spectroscopy #spatialscale #US #NEON #NationalEcologicalObservatoryNetwork #species #ecology #humanimpacts #remotesensing #biodiversity #earthobservation #GIS #spatial #mapping #scale #scale #diversity #metrics #ecosystems #spectral #richness #scaledependency #principalcompoenent #divergence #spatialanalysis #raster #topography #climate #geomorphology #regression #geostatistics #vegetation #plant #area #region #largescale #continent #forest #tree

Scale Dependence In Remotely Sensed Biodiversity: Leveraging Continental-Scale Imaging Spectroscopy From The National Ecological Observatory Network [spatial analysis]
--
https://doi.org/10.1002/rse2.70068 <-- shared paper
--
https://doi.org/10.1038/s41559-022-01702-5 <-- shared paper
--
#spectraldiversity #spectroscopy #spatialscale #US #NEON #NationalEcologicalObservatoryNetwork #species #ecology #humanimpacts #remotesensing #biodiversity #earthobservation #GIS #spatial #mapping #scale #scale #diversity #metrics #ecosystems #spectral #richness #scaledependency #principalcompoenent #divergence #spatialanalysis #raster #topography #climate #geomorphology #regression #geostatistics #vegetation #plant #area #region #largescale #continent #forest #tree

Scale Dependence In Remotely Sensed Biodiversity: Leveraging Continental-Scale Imaging Spectroscopy From The National Ecological Observatory Network [spatial analysis]
--
https://doi.org/10.1002/rse2.70068 <-- shared paper
--
https://doi.org/10.1038/s41559-022-01702-5 <-- shared paper
--
#spectraldiversity #spectroscopy #spatialscale #US #NEON #NationalEcologicalObservatoryNetwork #species #ecology #humanimpacts #remotesensing #biodiversity #earthobservation #GIS #spatial #mapping #scale #scale #diversity #metrics #ecosystems #spectral #richness #scaledependency #principalcompoenent #divergence #spatialanalysis #raster #topography #climate #geomorphology #regression #geostatistics #vegetation #plant #area #region #largescale #continent #forest #tree

https://www.europesays.com/ie/374862/ Mantle Convection And Nightside Volcanism On Lava World K2-141 b #AstroPhEP #Atmosphere #BASALT #Éire #Exoplanet #Https://astrobiologyCom/2026/03/astrogeology #IE #Ireland #LavaWorld #lithosphere #Science #SingleLidTectonics #Spectroscopy #tectonics #VolcanicOutgassing #Volcanism

Timing And Style Of Tectonic Assembly And Exhumation Of The Mchugh Complex Within The Chugach-Kodiak Accretionary Wedge, Alaska
--
https://doi.org/10.1029/2025TC009004 <-- shared paper
--
https://discoveryalert.com.au/chugach-prince-william-terrain-geology-alaska-2025 <-- shared technical article
--
[this paper is WAY over my head in terms of the nuance of structural geology, but still fascinating; further, I have to say: these are TRULY gorgeous, well-designed & presented, and useful geologic maps, cross-sections, annotated photographs and other visualisations (I am jealous of that level of skill, in the BEST of ways!)]
#geology #structuralgeology #fieldwork #geologic #mapping #KenaiPeninsula #McHughComplex #tectonics #underplating #faulting #subduction #erosion #Exhumation #ChugachKodiak #AccretionaryWedge #Alaska #coast #coastal #mineralogy #transects #crosssections #model #modeling #sampling #spectroscopy #accretionary #accretionarymargin #plateboundary #trench #interpretation #peneplanation #forearc

Dumb NMR question. Why don't we see splitting from 35Cl or 37Cl in the solvent signal when we run either 1H or 13C NMR? Is it being decoupled as with {1H}13C or does it have something to do with the gyromagnetic ratio or???? #NMR #coupling #decoupling #spectroscopy #chemistry #chemchat #help

https://www.europesays.com/ie/293117/ Teen girls who play organized sports show lower breast cancer risk biomarkers #Biomarker #blood #BreastCancer #cancer #Collagen #Éire #Health #IE #inflammation #Ireland #OxidativeStress #PhysicalActivity #PublicHealth #Research #Spectroscopy #Stress

I learnt about the "entropy of the derivative" or delentropy from the paper linked.

The idea is that the standard formula for information entropy doesn't distinguish between permutations. The entropy formula −∑p(x)logp(x) depends on p(x) which, absent any extra information about a signal, is estimated by the histogram of that signal.

Now, if we do a random permutation of the values of the signal, the histogram doesn't change, so the entropy doesn't change. To find an 'entropy metric' that accounts for that we need to go to the second order, calculating the entropy of the signal derivative.

The delentropy is sensitive to the actual shape of a signal or spectrum, not only the distribution of its values.

https://arxiv.org/abs/1609.01117

#physics #SignalProcessing #spectroscopy

It took a while, but I'm finally back to writing my blog 😎

The first installment for 2026 is an easy introduction to calculating information #entropy for optical spectra (or for any signal, really).

In my blog, I focus on #data analysis (#chemometrics, machine learning) applied to optical and near-infrared #spectroscopy Smoothing, or denoising, is one of the most common steps to work with spectroscopy data, and information entropy can be used as a criterion to guide the smoothing process.

Better still, the entropy of the derivative of a signal can help with that, because it accounts for the shape of the signal more naturally.

Read more at https://nirpyresearch.com/information-entropy-spectra/

#MachineLearning #NIR #Physics

It took a while, but I'm finally back to writing my blog 😎

The first installment for 2026 is an easy introduction to calculating information #entropy for optical spectra (or for any signal, really).

In my blog, I focus on #data analysis (#chemometrics, machine learning) applied to optical and near-infrared #spectroscopy Smoothing, or denoising, is one of the most common steps to work with spectroscopy data, and information entropy can be used as a criterion to guide the smoothing process.

Better still, the entropy of the derivative of a signal can help with that, because it accounts for the shape of the signal more naturally.

Read more at https://nirpyresearch.com/information-entropy-spectra/

#MachineLearning #NIR #Physics

It took a while, but I'm finally back to writing my blog 😎

The first installment for 2026 is an easy introduction to calculating information #entropy for optical spectra (or for any signal, really).

In my blog, I focus on #data analysis (#chemometrics, machine learning) applied to optical and near-infrared #spectroscopy Smoothing, or denoising, is one of the most common steps to work with spectroscopy data, and information entropy can be used as a criterion to guide the smoothing process.

Better still, the entropy of the derivative of a signal can help with that, because it accounts for the shape of the signal more naturally.

Read more at https://nirpyresearch.com/information-entropy-spectra/

#MachineLearning #NIR #Physics

It took a while, but I'm finally back to writing my blog 😎

The first installment for 2026 is an easy introduction to calculating information #entropy for optical spectra (or for any signal, really).

In my blog, I focus on #data analysis (#chemometrics, machine learning) applied to optical and near-infrared #spectroscopy Smoothing, or denoising, is one of the most common steps to work with spectroscopy data, and information entropy can be used as a criterion to guide the smoothing process.

Better still, the entropy of the derivative of a signal can help with that, because it accounts for the shape of the signal more naturally.

Read more at https://nirpyresearch.com/information-entropy-spectra/

#MachineLearning #NIR #Physics

It took a while, but I'm finally back to writing my blog 😎

The first installment for 2026 is an easy introduction to calculating information #entropy for optical spectra (or for any signal, really).

In my blog, I focus on #data analysis (#chemometrics, machine learning) applied to optical and near-infrared #spectroscopy Smoothing, or denoising, is one of the most common steps to work with spectroscopy data, and information entropy can be used as a criterion to guide the smoothing process.

Better still, the entropy of the derivative of a signal can help with that, because it accounts for the shape of the signal more naturally.

Read more at https://nirpyresearch.com/information-entropy-spectra/

#MachineLearning #NIR #Physics

Another day, another new feature in #LabPlot - #BaselineCorrection (#arPLS) as an #analysis curve on the plot. 🎁:boost_love:

#MerryChristmas! We hope Santa is good to you this year!🎅 🎄

@[email protected]
@opensource

#OpenSource #FreeSoftware #FLOSS #FOSS #DataViz #DataAnalysis #KDE #BaselineRemoval #BackgroundCorrection #NoiseRemoval #XRD #FTIR #RamanSpectrum #SignalProcessing #Spectroscopy #PeakAnalysis #MaterialsScience #Chemistry #Nanomaterials #Tech #Technology

Another day, another new feature in #LabPlot - #BaselineCorrection (#arPLS) as an #analysis curve on the plot. 🎁:boost_love:

#MerryChristmas! We hope Santa is good to you this year!🎅 🎄

@[email protected]
@opensource

#OpenSource #FreeSoftware #FLOSS #FOSS #DataViz #DataAnalysis #KDE #BaselineRemoval #BackgroundCorrection #NoiseRemoval #XRD #FTIR #RamanSpectrum #SignalProcessing #Spectroscopy #PeakAnalysis #MaterialsScience #Chemistry #Nanomaterials #Tech #Technology

Another day, another new feature in #LabPlot - #BaselineCorrection (#arPLS) as an #analysis curve on the plot. 🎁:boost_love:

#MerryChristmas! We hope Santa is good to you this year!🎅 🎄

@[email protected]
@opensource

#OpenSource #FreeSoftware #FLOSS #FOSS #DataViz #DataAnalysis #KDE #BaselineRemoval #BackgroundCorrection #NoiseRemoval #XRD #FTIR #RamanSpectrum #SignalProcessing #Spectroscopy #PeakAnalysis #MaterialsScience #Chemistry #Nanomaterials #Tech #Technology

Another day, another new feature in #LabPlot - #BaselineCorrection (#arPLS) as an #analysis curve on the plot. 🎁:boost_love:

#MerryChristmas! We hope Santa is good to you this year!🎅 🎄

@[email protected]
@opensource

#OpenSource #FreeSoftware #FLOSS #FOSS #DataViz #DataAnalysis #KDE #BaselineRemoval #BackgroundCorrection #NoiseRemoval #XRD #FTIR #RamanSpectrum #SignalProcessing #Spectroscopy #PeakAnalysis #MaterialsScience #Chemistry #Nanomaterials #Tech #Technology

Another day, another new feature in #LabPlot - #BaselineCorrection (#arPLS) as an #analysis curve on the plot. 🎁:boost_love:

#MerryChristmas! We hope Santa is good to you this year!🎅 🎄

@[email protected]
@opensource

#OpenSource #FreeSoftware #FLOSS #FOSS #DataViz #DataAnalysis #KDE #BaselineRemoval #BackgroundCorrection #NoiseRemoval #XRD #FTIR #RamanSpectrum #SignalProcessing #Spectroscopy #PeakAnalysis #MaterialsScience #Chemistry #Nanomaterials #Tech #Technology

New in the #VirtualObservatory: “WISDOM Proj XII ALMA CO(2-1) of clumps and clouds” by Liu L. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/517/632
#Astrometry #DwarfGalaxies #Interferometry #Spectroscopy

New in the #VirtualObservatory: “Spectra of AF Lep b using SPHERE & GRAVITY from VLT” by Balmer W.O. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/169/30
#InfraredAstronomy #Spectroscopy #Exoplanets #Interferometry

#VikingSpectrophotometer: A home-built, simple & cost-efficient #OpenSource #absorption & #fluorescence #spectrophotometer for #education in #chemistry:
https://pubs.acs.org/doi/10.1021/acs.jchemed.2c00679
#DIYbio #lab #instruments #spectroscopy #EDU #MINT #STEM #school

Cheese and milk in Italy show alarming levels of microplastic contamination https://www.diningandcooking.com/2178102/cheese-and-milk-in-italy-show-alarming-levels-of-microplastic-contamination/ #aging #Cheese #contamination #food #Italia #Italian #ItalianCheese #italiano #italy #micro #Polymers #Spectroscopy #tongue

NASA's Habitable Worlds Observatory Will Search For Life

#Astrophysics #CarbonDioxide #Coronagraph #Eic(earthinformationcenter)display #Exoplanet #HabitableWorldsObservatory #Spectroscopy

⏩ 2 new pictures and 2 new videos from NASA (SVS) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=10&user=OptimusPrimeBot&ilshowall=1&offset=20250708125534