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Related Concept Videos

Mixing Concrete01:30

Mixing Concrete

431
Concrete mixing ensures a homogenous blend where aggregates are well-coated with cement paste. Concrete mixing is typically done using two main types of mixers: batch and continuous. Batch mixers handle one batch at a time, thoroughly combining materials before discharging and receiving the next batch. In contrast, continuous mixers receive a steady flow of ingredients, mixing them consistently and discharging without interruption. Within batch mixers, tilting drum mixers mix with internal...
431
Carrier-Mediated Transport01:06

Carrier-Mediated Transport

1.4K
Carrier-mediated transport is a pivotal process in drug absorption, particularly for lipid-insoluble drugs, and encompasses facilitated diffusion and active transport. Facilitated diffusion allows drugs to move along their concentration gradient without energy expenditure, while active transport utilizes ATP to drive drug movement against this gradient.
Active transport involves two types of membrane-spanning transporters: uptake and efflux. Uptake transporters are expressed in the small...
1.4K
Active Transport01:14

Active Transport

2.3K
Active transport is a critical biological process that allows cells to move solutes against an electrochemical gradient. This process requires direct energy input and is characterized by its selectivity, saturability, and susceptibility to competitive inhibition.
Primary active transporters, like Na+, K+ and -ATPase, directly utilize ATP to move ions across the membrane. These transporters play significant roles in various physiological processes. For instance, Na+, K+ and -ATPase maintain...
2.3K
Mixing Time01:19

Mixing Time

509
The concept of mixing time is significant in producing a uniform concrete mix with the required strength. The mixing period starts once all components are in the mixer. Initially, the mixer is charged with 10% of the water, followed by the consistent addition of solids and then 80% of the water. The remaining water is added later, within the first quarter of the mixing period. The minimum mixing time varies according to the mixer's capacity; for example, mixers with up to 1 cubic yard...
509
Pore Transport and Ion-Pair Transport01:17

Pore Transport and Ion-Pair Transport

1.4K
Pore transport and ion-pair formation are critical mechanisms for the absorption and distribution of drugs in the body.
Pore transport, also known as convective transport, is a process where small molecules like urea, water, and sugars rapidly cross cell membranes as though there were channels or pores in the membrane. Although direct microscopic evidence is limited  but the concept of pores or channels is widely accepted based on physiological evidence. Despite the lack of direct...
1.4K
Drug Absorption Mechanism: Carrier-Mediated Membrane Transport01:19

Drug Absorption Mechanism: Carrier-Mediated Membrane Transport

6.5K
Certain large, lipid-insoluble drug molecules that resemble amino acids, peptides, or glucose, require specialized carrier proteins to facilitate their diffusion across cell membranes. This transport can occur through either facilitated diffusion, which does not require energy input, or active transport, which does require energy input.
Facilitated diffusion is a passive process that utilizes human Solute Carrier (SLC) transporters. These transporters bind to the drug, undergo structural...
6.5K

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Related Experiment Video

Updated: Feb 22, 2026

Quantifying Mixing using Magnetic Resonance Imaging
07:33

Quantifying Mixing using Magnetic Resonance Imaging

Published on: January 25, 2012

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Mixing and Transport.

Elena Siverts-Wong, Taira Newman, Tom Chapman

    Water Environment Research : a Research Publication of the Water Environment Federation
    |September 29, 2017
    PubMed
    Summary
    This summary is machine-generated.

    This review summarizes 2016 research on mixing and transport processes, focusing on their application in anaerobic digesters for improved efficiency.

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    Area of Science:

    • Environmental Engineering
    • Chemical Engineering

    Background:

    • Mixing and transport are critical for optimizing anaerobic digestion processes.
    • Understanding these phenomena is key to enhancing biogas production and waste treatment.

    Purpose of the Study:

    • To review and synthesize research on mixing and transport processes published in 2016.
    • To highlight advancements and key findings in the field of anaerobic digester operation.

    Main Methods:

    • Literature review of scientific publications from 2016.
    • Analysis of studies focusing on fluid dynamics and mass transfer within anaerobic digesters.

    Main Results:

    • Identified key trends in mixing strategies and their impact on digester performance.
    • Summarized findings on transport phenomena influencing substrate degradation and biogas yield.

    Conclusions:

    • Continued research in mixing and transport is vital for the advancement of anaerobic digestion technology.
    • Optimized mixing and transport can lead to more efficient and sustainable waste-to-energy systems.