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
Helmet-kirjastojen verkkosivustolla on ollut käytössä seurantateknologioita, joiden kautta tietoja esimerkiksi käyttäjän hakemista kirjoista ja muusta aineistosta on voinut välittyä sivullisille. HS
Riverside.fm makes it easy for podcasters and media companies to record remote interviews in studio quality. End result? 4k video and WAV audio content.
Diza ligger vaken på nätterna bredvid sin fyra månader gamla son. I huvudet snurrar allt hon har läst på nätet. Ska hon tillåta att han vaccineras mot sjukdomar som mässling och polio? När träffade hon senast någon med mässling? Trots att vi lever i en pandemi tycks antivaccin-rörelsen koppla ett allt hårdare grepp om de unga föräldrarna. Journalisterna Anna Nordbeck och Malin Olofsson har infiltrerat antivaccinationsrörelsen i mer än 1,5 år. De har förvånats över all värme och gemenskap som präglar rörelsen. Men ju djupare in i rörelsen de lyckats komma, desto tydligare har det också blivit att det finns metoder och mål som oroliga föräldrar inte ska få reda på.
Skjutvapenvåldet ökar i Sverige. Unga män i kriminella miljöer besitter ett våldskapital som chockerar. Gängkriminalitet och dödsskjutningar väntas bli en av de stora frågorna i nästa års val och de politiska partierna profilerar sig. Många människor känner rädsla och vanmakt.
We are trying to provide you with the latest news in minimum words, so you can stay informed without wasting time, so please Subscribe to our Channel.
We aim to bring updated and unfiltered information to maintain transparency with our audience. Our channel is trusted and reviewed by many. Join in with us by visiting and subscribing to our channel.
Digital99x is a leading force in digital solutions, offering innovative services including digital marketing, enterprise-level security, and creative design. Our dedicated team ensures tailored solutions, propelling businesses into the forefront of the digital era. With a commitment to excellence, Digital99x stands as a trusted partner for navigating the evolving digital landscape. We use various strategies to make sure your business gets noticed online, connects with right people & turns them into customers. Valuable services such as SEO, PPC Advertising, Social media marketing, local SEO, Lead generation, Website development which are beneficial for your business
On Monday, June 3, the Ukrainian government banned the World Socialist Web Site across the country, issuing an order commanding all internet service providers to block access to the WSWS indefinitely.
The decision to ban the WSWS is a response to the outpouring of support within Ukraine and internationally for Bogdan Syrotiuk, a 25-year-old socialist internationalist who was arrested by the Zelensky regime on April 25 on trumped up charges of “high treason” for writing articles for the WSWS, which SBU prosecutors (Ukraine’s domestic intelligence agency) deceitfully claim is “Russian propaganda.” Syrotiuk and the organization to which he belongs, the Young Guard of Bolshevik-Leninists (YGBL), are Trotskyists and irreconcilable opponents of the US-NATO war against Russia as well as the capitalist government of Vladimir Putin.
A. Savoy, R. Proctor, and G. Salvendy. Computers & Education, 52 (4):
858-867(May 2009)The benefit of PowerPoint™ is continuously debated, but both supporters and detractors have insufficient empirical evidence. Its use in university lectures has influenced investigations of PowerPoint’s effects on student performance (e.g., overall quiz....