Simulations show two droplets hitting a micro‑structured hydrophobic surface bounce differently depending on spacing and angle. This dynamic is useful for surface engineering.
#dropletimpact #hydrophobic #leidenfrosteffect #fluidmechanics #microstructure
The Microstructure of Wealth Transfer in Prediction Markets
https://www.jbecker.dev/research/prediction-market-microstructure
#HackerNews #Microstructure #Wealth #Transfer #PredictionMarkets #Research
Slot machines on the Las Vegas Strip return about 93 cents on the dollar. This is widely considered some of the worst odds in gambling. Yet on Kalshi, a CFTC-regulated prediction market, traders have wagered vast sums on longshot contracts with historical returns as low as 43 cents on the dollar. Thousands of participants are voluntarily accepting expected values far lower than a casino slot machine to bet on their convictions.
Our #preprint where we derive an #activeGel #model with entropic elasticity of the #microstructure from the thermodynamic constraints on the dynamics of #myosin molecular motors is now updated!
Hopefully more readable, and with the example of a #cyst like contractile sphere.
#cytoskeleton #rheology #activeMatter #softMatter #actomyosin
UBC super-black wood can improve telescopes, optical devices and consumer goods
By sheer accident, UBC researchers created a new super-black material that absorbs almost all light and trademarked it as Nxylon
https://news.ubc.ca/2024/07/ubc-super-black-wood-nxylon
https://news.ycombinator.com/item?id=41147393
New super-black 'wonder wood' called Nyxlon absorbs almost all light
https://www.earth.com/news/new-super-black-wonder-wood-called-nyxlon-absorbs-almost-all-light/
https://onlinelibrary.wiley.com/doi/10.1002/adsu.202400184
#light #MaterialsScience #UBC #optics #basswood #reflectance #SuperBlack #wood #microstructure #plasmas
A new #preprint where we derive an #activeGel #model with entropic elasticity of the #microstructure and give interpretations of the thermodynamic constraints on the dynamics of #myosin molecular motors.
Going Beyond DTI in the Clinic: The Appeal of Microstructural MRI by Prof. Ileana Jelescu (Microstructure Mapping Lab, CHUV & UNIL, Switzerland)
Diffusion #MRI is much richer than DTI. There is significant value in retrieving information about cellular density, morphology, characteristic sizes, myelination, etc.
Microstructural MRI has taken on the challenge with remarkable progress over the past few years.
Congratulations to IOB’s
Dr. Lauren Simonitis on her FANTASTIC upcoming position (@)ADHUS_FAUHS as the #research and #bioimaging Specialist!
& we hope no one misses Lauren & Chris Marshall's IOB read:
#Microstructure of the Bonnethead #Shark (Sphyrna tiburo) #Olfactory Rosette
Simonitis (@)OceanExplauren , Marshall
https://doi.org/10.1093/iob/obac027
&
https://sicb.org/sicb-news/in-honor-of-womens-history-month-meet-some-inspiring-sicb-women/
❗️A recently published #study sheds light💡 on the important role of the changing #microstructure and #inherentopticalproperties of #ice in affecting the #radiationtransfer of #Arctic #seaice❄️
Read more below🔎👇
https://tc.copernicus.org/articles/18/273/2024/
Abstract. Variations in Arctic sea ice are apparent not only in its extent and thickness but also in its internal properties under global warming. The microstructure of summer Arctic sea ice changes due to varying external forces, ice age, and extended melting seasons, which affect its optical properties. Sea ice cores sampled in the Pacific sector of the Arctic obtained by the Chinese National Arctic Research Expedition (CHINARE) during the summers of 2008 to 2016 were used to estimate the variations in the microstructures and inherent optical properties (IOPs) of ice and determine the radiation budget of sea ice based on a radiative transfer model. The variations in the volume fraction of gas bubbles (Va) of the ice top layer were not significant, and the Va of the ice interior layer was significant. Compared with 2008, the mean Va of interior ice in 2016 decreased by 9.1 %. Meanwhile, the volume fraction of brine pockets increased clearly during 2008–2016. The changing microstructure resulted in the scattering coefficient of the interior ice decreasing by 38.4 % from 2008 to 2016, while no clear variations can be seen in the scattering coefficient of the ice top layer. These estimated ice IOPs fell within the range of other observations. Furthermore, we found that variations in interior ice were significantly related to the interannual changes in ice ages. At the Arctic basin scale, the changing IOPs of interior ice greatly changed the amount of solar radiation transmitted to the upper ocean even when a constant ice thickness is assumed, especially for thin ice in marginal zones, implying the presence of different sea ice bottom melt processes. These findings revealed the important role of the changing microstructure and IOPs of ice in affecting the radiation transfer of Arctic sea ice.
Pratiques pluripro des #MSP et #CdS d'Occitanie pour le soin des addictions (Y. Vergès)
Représentations négatives. Connaitre autres auteurs.
#Microstructure = psychologue + travailleur social dans le lieu de cs habituel
Questionnaire. 270 MSP 86 CdS. 2 relances.
43% de réponses.
65% actions pluripro pour le soin des addictions
Mois sans tabac (40%), projets ou protocoles spécifiques (20%) surtout si microstructure
#CNGE2023
Here is a recent paper from my previous gig at #argonnenationallaboratory published in #npjcompumats. We demonstrate #coherent #diffraction #xrays #imaging at the #advancedphotonsource #synchrotron through a new #optimization based #phaseretrieval scheme. Our method effectively leverages the power of #hpc to vastly improve #3Dimensional reconstructions of defected #crystals on the #nanoscale.
https://www.nature.com/articles/s41524-023-01022-7
#physics #materialscience #microstructure #nanoscience #argonnenationallab
In this paper we demonstrated a method to reconstruct vector-valued lattice distortion fields within nanoscale crystals by optimization of a forward model of multi-reflection Bragg coherent diffraction imaging (MR-BCDI) data. The method flexibly accounts for geometric factors that arise when making BCDI measurements, is amenable to efficient inversion with modern optimization toolkits, and allows for globally constraining a single image reconstruction to multiple Bragg peak measurements. This is enabled by a forward model that emulates the multiple Bragg peaks of a MR-BCDI experiment from a single estimate of the 3D crystal sample. We present this forward model, we implement it within the stochastic gradient descent optimization framework, and we demonstrate it with simulated and experimental data of nanocrystals with inhomogeneous internal lattice displacement. We find that utilizing a global optimization approach to MR-BCDI affords a reliable path to convergence of data which is otherwise challenging to reconstruct.
LeidenForce
Hacker News
Jocelyn Etienne
Victoria Stuart 🇨🇦 🏳️⚧️
Jocelyn Etienne – research
Antje Hellwich
SICB journals(ICB & IOB)
PolarRES
Pilou 🐧⚔️
Siddharth Maddali