Enhanced Factor
Enhanced Factor - Related Videos
02:16
Transcription Factors
0 Views •
2019
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
11:25
Enhanced Yeast One-hybrid Screens To Identify Transcription Factor Binding To Human DNA Sequences
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Cited by 6 •
2019
Here, we present an enhanced yeast one-hybrid screening protocol to identify the transcription factors (TFs) that can bind to a human DNA region of interest. This method uses a high-throughput screening pipeline that can interrogate the binding of >1,000 TFs in a single experiment.
03:00
Self-Evaluation: Self-Enhancement and Self-Verification
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2020
Social psychologists have documented that feeling good about ourselves and maintaining positive self-esteem is a powerful motivator of human behavior (Tavris & Aronson, 2008). In the United States, members of the predominant culture typically think very highly of themselves and view themselves as good people who are above average on many desirable traits (Ehrlinger, Gilovich, & Ross, 2005). Often, our behavior, attitudes, and beliefs are affected when we experience a threat to our...
04:01
Factors Affecting Solubility
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2020
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide: This solubility equilibrium may be shifted left by the addition of either silver or iodide ions, resulting in...
01:19
Factors Affecting Drug Distribution: Miscellaneous Factors
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2025
Drug distribution in the human body is a complex process influenced by various individual factors, including age, pregnancy, obesity, diet, body water composition, pH levels, and specific disease conditions. Age plays a significant role due to differences in body composition among different age groups. Infants, for instance, have a higher proportion of total body water and lower albumin levels, a protein that binds drugs in the bloodstream. This unique composition in infants enhances the...
FAQs
Within the liquid film, the dissolved species is consumed after crossing the interface. That reaction keeps the local concentration lower than it would be during nonreactive uptake, so the concentration difference through the film remains larger. The resulting transport increase reflects the coupling between reaction rate and diffusion, rather than either process acting independently.
The enhancement factor responds to several linked properties: reaction kinetics determine how quickly the dissolved species is consumed, while diffusivity controls movement through the liquid film and solubility affects entry into the liquid. Operating conditions also matter because they influence the relative importance of these processes and therefore the reaction-assisted transport predicted for the equipment.
Compared with physical absorption or diffusion alone, a reactive liquid film can sustain a stronger driving gradient without changing the underlying need for interfacial transfer. The useful comparison is therefore the transport rate with reaction versus the corresponding nonreactive case. This distinction lets engineers separate reaction-assisted performance from ordinary dissolution and diffusion.
An engineering analysis can begin with the nonreactive mass-transfer case, then incorporate the reaction occurring in the liquid film. The analyst evaluates kinetics, diffusivity, solubility, and operating conditions to determine the factor and applies it to estimate the reaction-assisted flux. This sequence connects transport behavior with calculations for mass-transfer equipment.
For an absorber or membrane contactor, the factor provides a way to account for chemical reaction when estimating mass-transfer performance. Engineers can compare predicted reaction-assisted fluxes under different operating conditions and use those estimates in equipment analysis. The same reasoning extends to other mass-transfer equipment where a dissolved species reacts during transport.
Applications include gas treatment, carbon capture, and chemical processing, especially where a gas-phase species dissolves and reacts in a liquid. In these settings, the factor helps connect reaction and diffusion effects to engineering decisions about mass-transfer equipment. Its value supports analysis under specified operating conditions rather than serving as an isolated material property.