Title
Modelirovanie massoperenosa vo fraktal'nykh sredakh: Metody nelineynoy termodinamiki i fraktal'noy geometrii dlya issledovaniya ,Used
Delivery time: 8-12 business days (International)
V izuchenii i opisanii perenosa veshchestv cherez podvizhnye granitsy sistem zhidkost'zhidkost' dominiruet traditsionnyy podkhod, pri kotorom v kachestve dvizhushchey sily ispol'zuyut raznost' kontsentratsiy, svoystva faz schitayutsya neizmennymi vplot' do mezhfaznoy granitsy, a sama granitsa ne imeyushchey tolshchiny. V to zhe vremya, ekstraktsiya neorganicheskikh veshchestv, pochti vsegda soprovozhdaetsya khimicheskimi reaktsiyami i takimi yavleniyami, kak gidrodinamicheskaya neustoychivost', samoproizvol'noe dispergirovanie, obrazovanie dispersnykh mezhfaznykh sloev, adsorbtsiya dispersnykh chastits, ikh koagulyatsiya i vozniknovenie strukturirovannykh mezhfaznykh plenok. Dannye protsessy formiruyut novuyu dinamicheskuyu mezhfaznuyu oblast', novye usloviya protekaniya reaktsiy i perenosa massy v ney. Issledovateli poka ogranichivayutsya lish' konstatatsiey fakta o nalichii fraktal'noy razmernosti u mezhfaznoy oblasti. Popytki opisaniya protsessov, proiskhodyashchikh v ney, natalkivayutsya na matematicheskie trudnosti. Odnako, perenos massy vo fraktal'nykh sredakh mozhno opisyvat' s pomoshch'yu differentsial'nykh uravneniy, soderzhashchikh drobnye proizvodnye. Predlagaemyy metod chislennogo resheniya takikh uravneniy pozvolil vpervye izvlech' informatsiyu o mezhfaznykh yavleniyakh.
By changing our most important processes and
products, we have already made a big leap forward. This ranges from the
increased use of more sustainable fibers to the use of more
environmentally friendly printing processes to the development of
efficient waste management in our value chain.
⚠️ WARNING (California Proposition 65):
This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, please visit www.P65Warnings.ca.gov.
Shipping & Returns
Shipping
We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
Shipping & Returns
Shipping
We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
Secure Payment
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
We accept payments with :
Visa, MasterCard, American Express, Paypal, Shopify Payments, Shop Pay and more.
Secure Payment
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
We accept payments with :
Visa, MasterCard, American Express, Paypal, Shopify Payments, Shop Pay and more.