I don't subscribe to this, but the preview is worth posting, about what the #US #federal #forces are up to in #dc
https://premium.boingboing.net/p/fbi-and-secret-service-agents-deployed
The mesoderm invagination of the Drosophila embryo is known as an archetypal morphogenic process. To explore the roles of the active cellular forces and the regulation of these forces, we developed an integrated vertex model that combines the regulation of morphogen expression with cell movements and tissue mechanics. Our results suggest that a successful furrow formation requires an apical tension gradient, decreased basal tension, and increased lateral tension, which corresponds to apical constriction, basal expansion, and apicobasal shortening respectively. Our model also considers the mechanical feedback which leads to an ectopic twist expression with external compression as observed in experiments. Our model predicts that ectopic invagination could happen if an external compressive gradient is applied.
"Support #ABCMoscow !
Right now, we cannot #help those under #threat
This #year, ABC-Moscow carried out #three successful #evacuations of #anarchists facing #criminal charges in #Russia. #Security #forces wanted to send these #activists to pre-trial #detention #centers, but instead they remain #free — though forced into #exile.
Every #evacuation is difficult and expensive. It involves complex #logistics: crossing #borders, new #phones and #SIM #cards, #transport, #housing, #visa issues, and #money for the first #weeks. In just the past few #months, this has cost about 3,000 euros. And more help is needed — we continue to receive requests from #people under threat of #prosecution.
Here is the story of one of the #evacuated #comrades:
“I was engaged in #activist #work, and because of this, #FSB #officers came to search my #home. They took me to the #police #station and, after #interrogations, placed me [informally] under house #arrest — without providing any official documents. On my #phone, they found correspondence with a #clandestine #organization, and I was accused of ‘training for #terrorist #activity.’
To avoid #imprisonment, they offered me #cooperation. I pretended to agree but did not betray anyone, while secretly preparing to flee the country.
I contacted ABC, and they instructed me on how to safely leave Russia. The escape was successful, but in the first country I reached there was still a risk of arrest at Russia’s request. ABC paid for my flight to a safer country, helped me find temporary housing, provided money, and are now assisting me in obtaining a humanitarian visa in an EU country.”
At the moment, we have no money left for evacuations. Our fund is completely depleted, and we have even accumulated a debt of more than 2,000 euros to our supporters. As a result, we cannot help new comrades who are reaching out for support. To continue evacuating people, we urgently need financial assistance.
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#KnowledgeByte: In physics, there are four observed #Fundamental #Interactions (also known as Fundamental #Forces) that form the basis of all known interactions in nature.
Some speculative theories have proposed a fifth force to explain various anomalous observations that do not fit existing theories. Recently some progress made in search for the #FifthForce.
https://knowledgezone.co.in/posts/Fundamental-Forces-of-Nature-64d88bfaed7a1cf91c654df8
A key challenge in performing experiments with microparticles is controlling their adhesion to substrates. For example, levitation of a microparticle initially resting on a surface requires overcoming the surface adhesion forces to deliver the microparticle into a mechanical potential acting as a trap. By engineering the surface of silicon substrates, we aim to decrease the adhesion force between a metallic microparticle and the silicon surface. To this end, we investigate different methods of surface engineering that are based on chemical, physical, or physio-chemical modifications of the surface of silicon. We give quantitative results on the detachment force, finding a correlation between the water contact angle and the mean detachment force, indicating that hydrophobic surfaces are desired for low microparticle adhesion. We develop surface preparations decreasing the mean detachment force by more than a factor of three, or the force at which 50% of particles move by more than a factor of six, the compared to an untreated silicon surface. Our results will enable reliable levitation of microparticles and are relevant for experiments requiring low adhesion between microparticles and a surface.
Rxiv mechanobio
WINGS_radio
Dave 
Osna.FM
Knowledge Zone
