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martedì 30 agosto 2022

# gst: size, location and shape of interfacial nanobubbles can be tuned by nanostructures.

<< the nucleation mechanism of spontaneously generated NBs (nanobubbles) at solid-liquid interfaces of immersed nanostructured hydrophobic surfaces is studied. Depending on the size and density of the surface nanostructures, NBs with different size and density were reproducibly and deterministically obtained. >>️

moreover, << air entrapment experiments on a porous PS (coated polystyrene) surface covered with irregular nanopores show that also the shape of NBs can also be tuned by surface nanostructures, due to their pinning effect. It is thus feasible to tune NB size, position, and even morphology by varying surface nanostructures. >>️

Yuliang Wang, Xiaolai Li, et al. Entrapment of Interfacial Nanobubbles on Nano Structured Surfaces. arXiv:2208.08181v1 [physics.flu-dyn]. Aug 17, 2022.

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keyword "bubble" in FonT


Keywords: gst, nano, bubble, tune, pinning effect️







sabato 27 agosto 2022

# life; the hypothesis of early treatment (at home) of the virus sars-cov-2

Figure 1 - Proposed maladaptive hyperinflammatory response to SARS-CoV-2 infection (Perico N, Cortinovis M, Suter F, Remuzzi G. (2022))

<< A few observational studies have tested NSAIDs [non-steroidal anti-inflammatory drugs] (especially  relatively selective COX-2 inhibitors), often as part of multipharmacological protocols, for early outpatient treatment of COVID-19. The findings from these studies are promising and point to a crucial role of NSAIDs for the at-home management of people with initial COVID-19 symptoms. >>

<< Celecoxib, ibuprofen, and nimesulide should be avoided in children younger than 12 years, whereas aspirin should be taken only under prescription and at the dose recommended by the family doctor. >>️
Norberto Perico, Monica Cortinovis, Fredy Suter, Giuseppe Remuzzi. Home as the new frontier for the treatment of COVID-19: the case for anti-inflammatory agents. The Lancet Infectious Diseases. doi: 10.1016/ S1473-3099(22)00433-9. Aug 25, 2022. 

FonT

therefore the deadly infection by sars-cov-2 that has generated so much suffering,  pain, and dead everywhere it is recently hypothesized that it could easily be treated at home (an early treatment) with some success.

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aproposito di '1or2achoos' (da Wuhan (?)) ... FonT. Jul 13  2022.

Keywords: virus, coronavirus,  sarscov2, 2019ncov, covid19, 1or2achoos






lunedì 22 agosto 2022

# gst: vortex solitons in twisted circular waveguide arrays.

AA << address the formation of topological states in twisted circular waveguide arrays and find that twisting leads to important differences of the fundamental properties of new vortex solitons with opposite topological charges that arise in the nonlinear regime. >>️

They << find that such system features the rare property that clockwise and counter-clockwise vortex states are nonequivalent. >>️

Liangwei Dong, Yaroslav V. Kartashov, et al. Vortex solitons in twisted circular waveguide arrays. arXiv:2208.05049v1 [physics.optics]. Aug 9, 2022.


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keyword 'solitons' in Font


keyword 'vortex' in FonT


keyword 'vortice' in Notes
 (quasi-stochastic poetry)


Keywords: gst, solitons, vortex,  clockwise vortex, counter-clockwise vortex, waves






sabato 20 agosto 2022

# art: pictures of the floating world, a guide to making shadow puppets


<< Hiroshige (Utagawa Hiroshige) lived in the 19th century, the end of the classical period of ukiyo-e, the art of woodblock-printed “pictures of the floating world.” In that time he became one of the form’s last masters, having cultivated not just a high level of artistic skill but a formidable productivity. In total, Hiroshige produced more than 8,000 works. >>️

<< But his mastery encompassed more than the urban and rural landscapes of his homeland, as evidenced by this much humbler project: a set of omocha-e, or instructional pictures for children, explaining how to make shadow puppets. >>️

Hiroshige, Master of Japanese Woodblock Prints, Creates a Guide to Making Shadow Puppets for Children (1842). Art, History. Jul 6th, 2021. 

Utagawa Hiroshige. Art Institute of Chicago. 

Also

keyword 'fluttuante' in Notes
(quasi-stochastic poetry)

keyword 'floating' in FonT

keyword 'onda' in Notes 
(quasi-stochastic poetry)


Keywords: arts, puppets, shadow puppets, floating worlds, waves






mercoledì 17 agosto 2022

# gst: rare transitions in noisy net scenarios


AA << study small white noise perturbations of planar dynamical systems with heteroclinic networks in the limit of vanishing noise. (They)  show that the probabilities of transitions between various cells that the network tessellates the plane into decay as powers of the noise magnitude. (They) show that the most likely scenario for the realization of these rare transition events involves spending atypically long times in the neighborhoods of certain saddle points of the network. >>️

Yuri Bakhtin, Hong-Bin Chen, Zsolt Pajor-Gyulai. Rare transitions in noisy heteroclinic networks. arXiv: 2205.00326v1 [math.PR]. Apr 30, 2022.    https://arxiv.org/abs/2205.00326

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keyword 'noise'  in FonT 

keyword 'rumore'  in Notes
(quasi-stochastic poetry)

Keywords: gst, transitions, networks, heteroclinic networks, noise


sabato 13 agosto 2022

# gst: how a synchronization could emerge from chaotic activities

<< Can we find order in chaos? Physicists have shown, for the first time that chaotic systems can synchronize due to stable structures that emerge from chaotic activity. These structures are known as fractals, shapes with patterns which repeat over and over again in different scales of the shape. As chaotic systems are being coupled, the fractal structures of the different systems will start to assimilate with each other, taking the same form, causing the systems to synchronize. >>️

<< If the systems are strongly coupled, the fractal structures of the two systems will eventually become identical, causing complete synchronization between the systems. These findings help us understand how synchronization and self-organization can emerge from systems that didn't have these properties to begin with, like chaotic systems and biological systems. >>️

Topological synchronization of chaotic systems. Bar-Ilan University. Apr 22, 2022. 

<< chaotic synchronization has a specific trait in various systems, from continuous systems and discrete maps to high dimensional systems: synchronization initiates from the sparse areas of the attractor, and it creates what (AA) termed as the ‘zipper effect’, a distinctive pattern in the multifractal structure of the system that reveals the microscopic buildup of the synchronization process. >>️

Lahav, N., Sendina-Nadal, I., et al. Topological synchronization of chaotic systems. Sci Rep 12, 2508. doi: 10.1038/ s41598-022-06262-z. Feb 15, 2022. 

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keyword 'self-assembly' in FonT


Keywords: gst, self-assembly, self-organization, fractals, topological synchronization, zipper effect, chaos, chaotic systems







venerdì 12 agosto 2022

# gst: like steering a marble through a tilting labyrinth, randomness seems to quickly deliver specific outcomes.

<< According to the infinite monkey theorem, a monkey randomly hitting the keys of a typewriter will eventually write something worth reading—but it might take a few trillion years of trying. For those lacking the patience to wait, (AA)  now show that randomness can deliver specific outcomes much more quickly.  Simulating a 2D nanocluster of a dozen particles, (they) determine the temperature at which thermal fluctuations can most quickly rearrange those particles into a predetermined shape. They find that this time can be dramatically cut by applying an appropriate macroscopic force to the particles. >>

<< The duo also simulated nanoclusters that were subject to a macroscopic force field, for example, metallic nanoparticles in an electric field. Like steering a marble through a tilting labyrinth, they found the optimal global force to apply at each iteration such that the nanocluster navigated the space of possible configurations several orders of magnitude more quickly. >>️️

Marric Stephens. Rearranging Nanoclusters Using Randomness. Physics 15, s83. Jun 22, 2022. 

Francesco Boccardo, Olivier Pierre-Louis. Controlling the Shape of Small Clusters with and without Macroscopic Fields. Phys. Rev. Lett. 128, 256102. Jun 22, 2022.  

Also

keyword 'random' in FonT:


keyword 'error' | 'fuzzy' | 'noise'  in FonT 




keywords 'errore' | 'errori' in Notes (quasi-stochastic poetry)



keywords 'jelly roll' in FonT


Keywords: gst, nano, nanocluster, fluctuations, randomness, noise