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Related Concept Videos

The Thermodynamics of Mixing01:28

The Thermodynamics of Mixing

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Mixing is a fascinating phenomenon in thermodynamics, particularly when considering the Gibbs energy of a mixture at constant temperature and pressure. This energy, denoted as G, tends to decrease during spontaneous mixing processes, offering insights into the composition changes that occur.Imagine two ideal gases, initially separated in different containers, with amounts nA and nB, respectively, both at a temperature T and pressure p. The chemical potentials of these gases have their 'pure'...
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Mixing Concrete01:30

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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...
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Carrier-Mediated Transport01:06

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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...
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Active Transport01:14

Active Transport

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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...
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Mixing Time01:19

Mixing Time

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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...
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Pore Transport and Ion-Pair Transport01:17

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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...
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Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique
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Mixing and Transport.

Chein-Chi Chang1, Tom Chapman, Elena Siverts-Wong

  • 1Department of Environmental Science and Engineering, School of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, China.

Water Environment Research : a Research Publication of the Water Environment Federation
|September 14, 2016
PubMed
Summary
This summary is machine-generated.

Research in 2015 focused on mixing and transport processes. Key areas included anaerobic digester mixing, heat transfer mixing, and environmental fate and transport studies.

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Area of Science:

  • Environmental Science
  • Chemical Engineering
  • Fluid Dynamics

Background:

  • Mixing and transport processes are crucial in various environmental and engineering applications.
  • Understanding these phenomena is essential for optimizing system performance and predicting environmental impacts.

Purpose of the Study:

  • To review and synthesize research published in 2015 concerning mixing and transport processes.
  • To highlight key findings and identify trends in the study of anaerobic digester mixing, heat transfer, and environmental fate and transport.

Main Methods:

  • Literature review of scientific publications from the calendar year 2015.
  • Categorization of research based on specific application areas: anaerobic digesters, heat transfer, and environmental fate and transport.

Main Results:

  • Compilation of studies addressing mixing dynamics in anaerobic digesters.
  • Summary of research on mixing phenomena related to heat transfer processes.
  • Overview of investigations into the environmental fate and transport of substances.

Conclusions:

  • The year 2015 saw significant contributions to the understanding of mixing and transport processes across diverse fields.
  • Continued research is vital for advancing applications in waste management, energy, and environmental protection.