# gst: polymeric complex coacervation; when a disordered strand is able to self-assemble into a very precise structure

<< to read patterns on long chains of molecules to understand and predict behavior of disordered strands of proteins and polymers. >>

<< The thing that I think is exciting about this work is that we're taking inspiration from a biological system, (..) The typical picture of a protein shows that it folds into a very precise structure. This system, however, is based around intrinsically disordered proteins. >> Charles Sing.

Researchers can now predict properties of disordered polymers. University of Illinois at Urbana-Champaign. Jun 3, 2019.

https://m.phys.org/news/2019-06-properties-disordered-polymers.html

<< Charged polymers are ubiquitous in biological systems because electrostatic interactions can drive complicated structure formation and respond to environmental parameters such as ionic strength and pH.  In these systems, function emerges from sophisticated molecular design; for example, intrinsically disordered proteins leverage specific sequences of monomeric charges to control the formation and function of intracellular compartments known as membraneless organelles. >>

Tyler K. Lytle, Li-Wei Chang, et al. Designing Electrostatic Interactions via Polyelectrolyte Monomer Sequence. ACS Cent. Sci.201954709-718. doi: 10.1021/acscentsci.9b00087 Apr 5, 2019.

https://pubs.acs.org/doi/10.1021/acscentsci.9b00087#

# astro: well, NGC1052-DF2 is not ab.normal, too

<< In 2018, a study published in Nature announced the discovery of a galaxy that apparently lacked dark matter. >>

<< The original article published in Nature stated that the galaxy (NGC1052-DF2) is at a distance of some 64 million light years from the Earth. However, this new research has revealed that the real distance is much less, around 42 million light years. (..) Thanks to these new results, the parameters of the galaxy inferred from its distance have become "normal," and fit the observed trends traced by galaxies with similar characteristics. >>

<< This implies that a significant part of the total mass must be made up of dark matter. >>

Ignacio Trujillo. Researchers solve mystery of the galaxy with no dark matter. Instituto de Astrofísica de Canarias. Jun 3, 2019.

https://m.phys.org/news/2019-06-mystery-galaxy-dark.html

Ignacio Trujillo, Michael A Beasley, et al.  A distance of 13 Mpc resolves the claimed anomalies of the galaxy lacking dark matter.  Monthly Notices of the Royal Astronomical Society. Volume 486, Issue 1, June 2019, Pages 1192–1219. doi: 10.1093/mnras/stz771.

https://academic.oup.com/mnras/article-abstract/486/1/1192/5380810

# gst: apropos of "Anomalous Diffusion"

<< Consider a chaotic dynamical system generating diffusionlike Brownian motion. Consider a second, nonchaotic system in which all particles localize. Let a particle experience a random combination of both systems by sampling between them in time. What type of diffusion is exhibited by this random dynamical system?  >>

Yuzuru Sato and Rainer Klages. Anomalous Diffusion in Random Dynamical Systems. Phys. Rev. Lett. 122, 174101 doi: 10.1103/PhysRevLett.122.174101 Apr 29, 2019.

https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.122.174101  

# phys: a plasma soup "cooked" in laboratory

<< a team of scientists (..) has for the first time created a particular form of coherent and magnetized plasma jet that could deepen the understanding of the workings of much larger jets that stream from newborn stars and possibly black holes-stellar objects so massive that they trap light and warp both space and time. >>

<< We are now creating stable, supersonic, and strongly magnetized plasma jets in a laboratory that might allow us to study astrophysical objects light years away, >>  Edison Liang.

Raphael Rosen. Physicists create stable, strongly magnetized plasma jet in laboratory. Princeton Plasma Physics Laboratory.  May 31, 2019.

https://m.phys.org/news/2019-05-physicists-stable-strongly-magnetized-plasma.html

L. Gao, E. Liang, et al. Mega-Gauss Plasma Jet Creation Using a Ring of Laser Beams. ApJL 873 L11. March 8, 2019.

https://iopscience.iop.org/article/10.3847/2041-8213/ab07bd/meta

# physio: bioclocks: liver knows what time it is.

Two studies << analyze the network of internal clocks that regulate metabolism. Although researchers had suspected that the body's various circadian clocks could operate independently from the central clock in the hypothalamus of the brain, there was previously no way to test the theory >>

<< The results were quite surprising, (..) No one realized that the liver or skin could be so directly affected by light.>> Paolo Sassone-Corsi.

Body parts respond to day and night independently from brain, studies show.  University of California, Irvine.  May 30, 2019

https://m.medicalxpress.com/news/2019-05-body-day-night-independently-brain.html    

Patrick-Simon Welz, Valentina M. Zinna, et al.  BMAL1-Driven Tissue Clocks Respond Independently to Light to Maintain Homeostasis. Cell. Volume 177, Issue 6, P1436-1447.E12. doi: 10.1016/ j.cell.2019.05.009.  May 30, 2019.

https://www.cell.com/cell/fulltext/S0092-8674(19)30507-0

Also

"BMAL1"

https://www.ncbi.nlm.nih.gov/pmc/?term=bmal1

# life: a case of extreme swing: clearly "He is not not" or vice versa "He is yes yes"

Jonathan Chait. Mueller: Trump Is Not Not a Criminal. 12:03 P.M.

http://nymag.com/intelligencer/2019/05/mueller-trump-is-not-not-a-criminal.html

<< I usually listen to music during my stressful work.  Today was Rage Against the Machine.  I am thinking Bey for tomorrow.  Suggestions? >>

Robert S. Mueller @VSpecialCounsel 5:17 AM  Aug 15, 2017.

https://mobile.twitter.com/VSpecialCounsel/status/897296036493840384

FonT

Ozzy Osbourne. Mister Crowley. (Blizzard of Ozz). (1:07:25)

https://youtu.be/_fY9I3ySSfs

<< Standing with their backs to the wall
Was it polemically sent?
I wanna know what you meant
I wanna know
I wanna know what you meant, yeah! >>

https://it.m.wikipedia.org/wiki/Mr._Crowley

# gst: to create standing waves induced by mismatches

<< In work recently published (..), the mismatch of electronic momentum across domain walls (i.e., regions with a different orientation of the intrinsic electric dipole) is shown to create standing waves, even though there is no potential buildup across the domain wall. >>

Researchers demonstrate new properties of atomically thin ferroelectrics. University of Arkansas.  May 28, 2019

https://m.phys.org/news/2019-05-properties-atomically-thin-ferroelectrics.html  

Kai Chang, Brandon J. Miller, et al. Standing Waves Induced by Valley-Mismatched Domains in Ferroelectric SnTe Monolayers. Phys. Rev. Lett. 122, 206402 May 24, 2019.

https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.122.206402