Martingale difference sequence: Difference between revisions

From formulasearchengine
Jump to navigation Jump to search
en>MystBot
 
en>Schmock
Line 1: Line 1:
Interior Decorator Houston from Saint-Malo, usually spends time with passions which includes beatboxing, como [http://comoganhardinheiropelainternet.comoganhardinheiro101.com ganhar dinheiro] na internet and cheerleading. Has travelled ever since childhood and has traveled to numerous destinations, for example Heard and McDonald Islands.
In [[engineering]], the '''mass transfer coefficient''' is a [[diffusion]] rate constant that relates the [[mass transfer]] rate, mass transfer area, and concentration gradient as driving force:<ref name=SeaderHenley>{{cite book | author = Seader, J. D., and Henley, Ernest J. | title = Separation Process Principles | publisher = Wiley | location = New York | year = | isbn = 0-471-58626-9}}</ref>
 
<math>k_c = \frac{\dot{n}_A}{A  \Delta c_A}</math>
 
Where:
*''k''<sub>''c''</sub> is the mass transfer coefficient [mol/(s&middot;m<sup>2</sup>)/(mol/m<sup>3</sup>)], or m/s
*''<math>\dot{n}_A</math>'' is the mass transfer rate [mol/s]
*''A'' is the effective mass transfer area [m<sup>2</sup>]
*&Delta;''C''<sub>''A''</sub> is the driving force concentration difference [mol/m<sup>3</sup>].
 
This can be used to quantify the mass transfer between [[phase (matter)|phase]]s, [[miscible|immiscible]] and partially [[miscible]] [[fluid]] mixtures (or between a fluid and a porous solid<ref>e.g.: during [[adsorption]] process.</ref>). Quantifying mass transfer allows for design and manufacture of [[separation process]] equipment that can meet specified requirements, estimate what will happen in real life situations (chemical spill), etc.
 
Mass transfer coefficients can be estimated from many different theoretical [[equation]]s, [[correlation]]s, and [[analogy|analogies]] that are functions of material properties, [[intensive and extensive properties|intensive properties]] and flow regime ([[laminar flow|laminar]] or [[turbulence|turbulent]] flow). Selection of the most applicable model is dependent on the materials and the system, or environment, being studied.
 
==Mass transfer coefficient units==
* (mol/s)/(m<sup>2</sup>&middot;mol/m<sup>3</sup>) = m/s
 
==See also==
*[[Mass transfer]]
*[[Separation process]]
*[[Sieving coefficient]]
 
==References==
<references/>
 
[[Category:Chemical engineering]]
[[Category:Transport phenomena]]
{{engineering-stub}}

Revision as of 17:50, 13 April 2013

In engineering, the mass transfer coefficient is a diffusion rate constant that relates the mass transfer rate, mass transfer area, and concentration gradient as driving force:[1]

Where:

  • kc is the mass transfer coefficient [mol/(s·m2)/(mol/m3)], or m/s
  • is the mass transfer rate [mol/s]
  • A is the effective mass transfer area [m2]
  • ΔCA is the driving force concentration difference [mol/m3].

This can be used to quantify the mass transfer between phases, immiscible and partially miscible fluid mixtures (or between a fluid and a porous solid[2]). Quantifying mass transfer allows for design and manufacture of separation process equipment that can meet specified requirements, estimate what will happen in real life situations (chemical spill), etc.

Mass transfer coefficients can be estimated from many different theoretical equations, correlations, and analogies that are functions of material properties, intensive properties and flow regime (laminar or turbulent flow). Selection of the most applicable model is dependent on the materials and the system, or environment, being studied.

Mass transfer coefficient units

  • (mol/s)/(m2·mol/m3) = m/s

See also

References

  1. 20 year-old Real Estate Agent Rusty from Saint-Paul, has hobbies and interests which includes monopoly, property developers in singapore and poker. Will soon undertake a contiki trip that may include going to the Lower Valley of the Omo.

    My blog: http://www.primaboinca.com/view_profile.php?userid=5889534
  2. e.g.: during adsorption process.

Congratulations on accepting your provide to review with Curtin Singapore. We understand that moving to a brand new nation might be difficult, and we goal to give you impartial details about housing options.

That was one of many foremost explanation why I started Propwise.sg, to help you understand the Singapore property market and make better shopping for, promoting, renting and investing choices – minus all of the hype and misinformation. You'll find many of the basic knowledge you want to get started there. This new e-book takes it up a notch! The best way to find an attractive property to purchase Esmaco Valuers & Property Brokers Pte Ltd Every sale starts with 10 % low cost for end of season sale; changes to 20 p.c low cost storewide; follows by further discount of 50 p.c; and ends with ultimate discount of 70 percent or more. Generally there is even a warehouse sale or moving out sale with huge mark-down of costs for stock clearance. Abroad Property News

Whether you hire an agent or not, property funding is an costly business, so always do your own research. Consumers can check out recently transacted prices of HDB and personal properties at www.hdb.gov.sg or ura.gov.sg before setting their budget or selling price. Visit the unit at completely different times of the day and observe the neighbourhood. If doable, communicate with the neighbours to get a better feel of whether you and your loved ones will slot in. It's also a very good probability to find out if your vendor has a dubious previous.

I used to be invited to a brand new launch enterprise avenue undertaking briefing house for sale in singapore a premium workplace growth built-in with medical suites and F&B podium at Jurong Lake District. This new launch challenge is predicted to launch end Feb to early Mar 14. I am not precisely a west side individual and have to admit that I have neglected developments in Jurong, thankfully this briefing has enlighten me on the exploding development from this new launch at Venture Avenue in the Jurong Lake District.

The problem I've found is that there are only a few good and goal sources of knowledge out there to assist the budding Singapore property investor. While a very good property agent is certainly helpful, a smart investor can not rely solely on what an agent says as he has an inherent battle of interest – his purpose is to get you to transact, as that is how he earns his cash. Which may explain the amusing phenomenon of what number of within the trade will say that it's all the time a "good time" to purchase whether costs are going up or down.

The Letter of Intent comprises a number of important considerations, similar to a clause to guard you within the event your job unexpectedly terminates, you are moved to a different nation by your employer, or some other motive you need to depart earlier than anticipated, thus permitting you to end your tenancy early if required. Nonetheless, this is solely usually allowed if your settlement is for at the very least one year. Even so, you will usually still have to present not less than two months discover and with this clause in place, your landlord will have to refund your deposit.

If the owner or the landlord's agent is using the standard IEA settlement, it ought to be tremendous. Your agent will then be certain that the Tenancy Agreement is honest and unbiased. You will have to organize the rest of the security deposit and advance rental upon signing of the Tenancy Agreement. For 1 12 months lease - 1 month's deposit and 1 month's advance rental. For two years lease - 2 month's deposit and 1 month's advance rental. Minus the goodfaith deposit (if applicable) that you've got paid when signing the Letter of Intent. then round down to the nearest dollar Example 1a Monthly hire is $5,000 For properties that consist of each residential and non-residential portions, solely the non-residential portion is subject to GST. Personal Challenge Data Your Pleasant Agent