#PhageSky

Kevin Graaf: Computerising Hieroglyphic Scripts YouTube video by Visual Interactions in Early Writing Systems

www.youtube.com/watch?v=Vhx-...

EllipsePerimeter[a_, b_] :=
2*Pi*Sqrt[a*b]*LegendreP[
1/2, (a^2 + b^2)/(2*a*b)]
c.f. content.wolfram.com/sites/19/200...

Conformal Elastodynamics in 2D Dilational Metamaterials Flexible mechanical structures can undergo large deformations under small loads, enabling large, complex, and nonlinear wave responses under finite-frequency driving. Here, we study a dynamically driv...

arxiv.org/abs/2604.16637
/Conformal Elastodynamics in 2D Dilational Metamaterials/
Neel Singh, Audrey A. Watkins, Giovanni Bordiga, Vincent Tournat, Katia Bertoldi, Zeb Rocklin

Implementing p-adic numbers in Macaulay2 using its foreign function interface and FLINT Macaulay2 is a computer algebra platform widely used by researchers in algebraic geometry and commutative algebra. Using the ForeignFunctions package, it is possible to make calls from Macaulay2 to dy...

arxiv.org/abs/2604.16799
/Implementing p-adic numbers in Macaulay2 using its foreign function interface and FLINT/
Douglas A. Torrance

Puffin population structure: There is more than meets the eye Genetic study provides evidence for four genetic clusters.

Your daily Avian Hybrids story!

Puffin population structure: There is more than meets the eye
avianhybrids.wordpress.com/2022/09/21/p...

#ornithology

Photo of a pied flycatcher by ViiruPesonen, Wikimedia commons

Fig. 1 from the article: (a) Correlation between the annual average hatching date and the date of the caterpillar peak (open dots are experimental years: 2015 (intermediate in caterpillar peak date of the three experimental years), 2021 (latest caterpillar peak date) and 2022 (earliest caterpillar peak date), (b) the interval between arrival and laying in response to the caterpillar peak, (c) the annual strength of selection on laying date, measured as the linear slope of standardized laying date on relative fitness (measured as the number of locally recruiting offspring per female) (open dots are experimental years: 2015, 2021 and 2022), (d) example of the correlation between individual interval between arrival and laying in response to variation in arrival date for two experimental years: blue triangles: 2021, a cold spring, and red dots: 2022, a relatively warm spring.

New paper: can food availability explain timing of breeding? Across studies, effects of supplemental feeding on laying date vary, suggesting that ecological context matters and should be reported to interpret experimental results.

➡️ vist.ly/4z3jj

#ornithology #birds #diet #layingdate

closeup view of a bunch of at least 8 white pear flowers on a tree, with a brown and black bee hovering in front of them

#FlowersOnSunday #Stunday #Pear #Pyrus #trees #Flowers #FlowerReport #FlowerSky #FlowerPhotography #Bees #Honeybee #insects #bugs #nature #NaturePhotography #photo #PhotoSky #PhonePhotography #photography #MobilePhotography #Phonetography #AltText #NoAI

New video, on mechanisms that illustrate the duality between the cube and the octahedron! Here's one of them: a linkage with fabric panels designed by Sabetta Matsumoto.
Full video at youtu.be/T9BNMLFHXUw

Computer vision and converse theorems Random matrices provide a well-established statistical model for a range of arithmetic phenomena. In this paper, we investigate the extent to which one- and two-dimensional convolutional neural networ...

arxiv.org/abs/2604.15155
/Computer vision and converse theorems/
Yang-Hui He, Kyu-Hwan Lee, Thomas Oliver, Yidi Qi

Characterizing iron-bound organic carbon in cold seep sediment cores: impacts of anaerobic oxidation of methane - Biogeochemistry Reactive iron oxides (FeR), often termed the “rusty sink” of organic carbon (OC), has been well studied in estuarine settings but remains poorly constrained in deep-sea sediments. Here, we investigate...

Characterizing iron-bound organic carbon in cold seep sediment cores: impacts of #anaerobic oxidation of #methane

link.springer.com/article/10.1...

Our new paper published in @zoojlinnsoc.bsky.social on the osteology and neuroanatomy of the crocodyliform Koumiodontosuchus. Great study led by @christijanibarker.bsky.social with @tetzoo.bsky.social et al
academic.oup.com/zoolinnean/a...
@linneansociety.bsky.social @sotonbiosciences.bsky.social

Liao, M., Liu, Y., Xu, Z., Fang, M., Yu, Z., Cui, Y., Sun, Z., ...., Thakkar, N., Hardin, P. E., Golden, S. S., Zhang, E. E. (2025). The P-loop NTPase RUVBL2 is a conserved clock component across eukaryotes Nature, 642(8066):165-173 pubmed.ncbi.nlm.nih.gov/40140583/

Large wader with upturned, curved bill, tan head and neck, and white body and black wings and back, and blue legs, walking in turbulent and turbid shallow water.

An American avocet for the #Waders theme of #BirdOfTheDay picked by @alan678.bsky.social

The bird is wading at the edge of a 100-acre seasonal playa lake (full of crustaceans) where the water always looks like latte ☕️ because of suspended clay particles.
#birds #photography #nature #ECK

Quantification of Fish Littoral Carbon Use and Trophic Position Using Stable Isotopes: An Empirical Comparison of Equations Using Freshwater Lakes Standardizing stable isotope values with these metrics allows for comparison across different systems and time scales; however, several equations to quantify LCU and TP have been introduced with litt...

Quantification of Fish Littoral Carbon Use and Trophic Position Using Stable Isotopes: An Empirical Comparison of Equations Using Freshwater Lakes - Andersen - 2026 - Ecology and Evolution #stableisotopes onlinelibrary.wiley.com/doi/full/10....

Very proud of this work and all the efforts from my team and collaborators on this! You can now use DGRs for in vivo targeted hypermutagenesis in E. coli. We also included some early proof of concept in Yeast thanks to @seth-shipman.bsky.social !

Diversification of the 10th core atom of 9-cyanopyronins expands the resonance Raman vibrational palette Communications Chemistry, Published online: 16 April 2026; doi:10.1038/s42004-026-02019-1Rhodamine derivatives with different core atoms at the 10th position exhibit diverse optical properties for fluorescence imaging, however, the effect of the 10th core atom on vibrational properties remain largely underexplored. Here, the authors prepare 9-cyanopyronin derivatives in which the 10th core atom is substituted with group 13, 14, 15 or 16 elements and evaluate their properties as resonance Raman probes, performing live-cell three-color imaging using distinct patterns of C ≡ N or C = C bond vibrations together with different subcellular probe localization.

Just out: Diversification of the 10th core atom of 9-cyanopyronins expands the resonance Raman vibrational palette

We love #zebrafish too!

A 5-Enolpyruvylshikimate 3-Phosphate Synthase Functions as a Transcriptional Repressor in Populus An isoform of the EPSP synthase enzyme possesses a DNA-binding helix-turn-helix motif and has dual roles in shikimate biosynthesis and transcriptional repr

A moonlighting (trigger) EPSP synthase in Populus trichocarpa:

5-Enolpyruvylshikimate 3-Phosphate Synthase Functions as a Transcriptional Repressor in Populus:

academic.oup.com/plcell/artic...

#triggi #glyphosate

Scientists stunned by ‘fundamentally new way’ life produces DNA | Science | AAAS www.science.org/content/arti...

Dickinsonia: How did it move? YouTube video by Life Through Time

skip to 34:10
www.youtube.com/watch?v=ZWQW...

ironwrights imply ironwlefts?

In collaboration with the Llobet lab in Barcelona and the NXR, we characterized a Xenopus model of Danon disease, a rare lysosomal disorder. Extra cool that the functional characterization was done during the Neurobiology course at @mblscience.bsky.social last summer!

The 1-2-3 conjecture for polygonal tilings The 1-2-3 conjecture has been solved positively in 2024 for finite graphs and by extension for infinite graphs which are locally finite. The solution is non-constructive, and finding explicit solution...

arxiv.org/abs/2604.15138
/The 1-2-3 conjecture for polygonal tilings/
Alison Charlesworth, Christopher Ramsey, Nicolae Strungaru

It’s use the reflection formula to convert a gamma functions identity into something like this. zeta(1/2) is more slippery though

take a theta functions special value with gamma functions, use the reflection relation to produce identities like this

New paper alert: Our latest shows how maternal diet impacts ribosome levels and early growth intergenerationally in #Celegans

Led by Sigma Pradhan and in collab with @nstroustrup.bsky.social

journals.plos.org/plosbiology/...

@plosbiology.org @izb-unibern.bsky.social @unibe.ch

🎭 London Stage Debut 🎭

Looking forward to our MRC Centre for Medical Mycology Q&A event following a performance of Lifeline at Southwark Playhouse next week.