Control of capillary flow through porous media has broad practical implications. However, achieving accurate and reliable control of such processes by tuning the pore size or by modification of interface wettability remains challenging. Here we propose that the liquid flow by capillary penetration can be accurately adjusted by tuning the geometry of porous media. Methodologies: On the basis of Darcy’s law, a general framework is proposed to facilitate the control of capillary flow in porous systems by tailoring the geometric shape of porous structures. A numerical simulation approach based on finite element method is also employed to validate the theoretical prediction. Findings: A basic capillary component with a tunable velocity gradient is designed according to the proposed framework. By using the basic component, two functional capillary elements, namely, (i) flow accelerator and (ii) flow resistor, are demonstrated. Then, multi-functional fluidic devices with controllable capillary flow are realized by assembling the designed capillary elements. All the theoretical designs are validated by numerical simulations. Finally, it is shown that the proposed concept can be extended to three-dimensional design of porous media
Olli Tammilehto HS-yleisönoasastossa : DCA-sopimus antaisi mahdollisuuden perustaa Suomeen sellaisia sotilasalueita, joihin vain Yhdysvalloilla olisi pääsy.
An Insider's Guide to "Anti-Disinformation"
Andrew Lowenthal spent more than two decades defending digital rights, and watched as peers and partner organizations switched to an opposite mission called "anti-disinformation." An inside account
Andrew Lowenthal
The Racket 25 apr. 2023
"Pakistan sörjer minst 300 personer som sägs ha omkommit på Medelhavet förra veckan. Det är fortsatt svårt att säga exakt hur många som drunknade när en överfylld migrantbåt sjönk utanför Grekland."
Se även https://www.collettiva.it/copertine/internazionale/2023/06/16/podcast/strage-migranti-mai-fatalita-3158675/ : i moltiplicano le testimonianze e i video che confermerebbero l'ipotesi di un colpevole ritardo degli interventi della Guardia costiera greca durante l'affondamento del barcone con a bordo circa 750 migranti al largo delle coste del Peloponneso lo scorso 13 giugno.
"Tämän vuoden aikana noin 72 000 pakolaista ja siirtolaista on YK:n tilaston mukaan tullut Välimeren maihin Italiaan, Espanjaan, Kreikkaan, Maltalle ja Kyprokselle." (HS 14.6.: "Kymmeniä siirtolaisia hukkui matkalla Libyasta Italiaan Kreikka on julistanut kolmen päivän suruajan onnettomuuden vuoksi."
11.2.2020. "Yrityskauppa on merkittävä investointi kotimaisen, riippumattoman journalismin digitaaliseen tulevaisuuteen. Kaupan tavoitteena on vahvistaa ostettavien lehtien ja Sanoman uutismedialiiketoiminnan kehitystä ja varmistaa kaikkia suomalaisia palveleva elinvoimainen, kotimainen, riippumaton uutismedia myös digitaalisessa toimintaympäristössä. Journalistisen riippumattomuuden varmistaminen myös jatkossa on yrityskaupan keskeinen osa: toimitukset ja uutisbrändit jatkavat itsenäisinä omien päätoimittajiensa johdolla."
By
Amber A’Lee Frost
Jacobin, Januari 2024: Om tonårstidningen Teen Vogue som läses av mer än 8 miljoner: "Även om de exakta siffrorna är omtvistade är en sak helt klar: långt fler vuxna - mestadels millenniegenerationen, även när vi är på väg in i medelåldern - läser tonårstidningen som kallar sig "den unga människans guide till att erövra (och rädda) världen" än tonåringar."
"Most damningly, just 1.7 percent of their May 2018 audience was 17 or younger. Only 2.6 percent were 18 to 24 years old. At the absolute most generous estimate, in Teen Vogue’s digital audience — the only audience they still have after they shelved their print edition with a final copy featuring Hillary Clinton on the cover — 1 in 20 readers is an actual teenager."
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F. Abel, M. Frank, N. Henze, D. Krause, D. Plappert, und P. Siehndel. The Semantic Web, 6th International Semantic Web Conference,
2nd Asian Semantic Web Conference, ISWC 2007 + ASWC 2007,
Busan, Korea, November 11-15, 2007, Volume 4825 von Lecture Notes in Computer Science, Seite 871-878. Springer, (2007)
M. Atzmueller. Solving Large Scale Learning Tasks: Challenges and Algorithms. Festschrift in Honour of Prof. Dr. Katharina Morik, Volume 9580 von LNCS, Springer Verlag, (2016)