How crypsis occurs? wath are the reason of camouflage in animal?

how crypsis occurs? Is there information (journal, book, etc.) easy to understand? Why animal hide in nature, wthat is the resaon. Is there information (journal, book, etc.) easy to understand?...

11 December 2017 6,014 1 View

Where to find books about Crypsis, natural selection or adaptation?

I want to know how Crypsis, natural selection or adaptatio is carried out in nature, somebody know book with good example?

08 September 2017 9,844 0 View

Is there a mathematical modeling of peltier modules?

I want to make a mathematical model of a peltier module, is there a model that take into account heat and electrical energy (volts and amperes)

03 April 2017 4,374 0 View

How obtain the power output of PV solar cell as a function of temperature?

05 June 2016 6,006 1 View

How can I simulate Phase Change Material in Autodesk CFD simulation?

I want to simulate CFD autodesk simulation, but there are not information or samples in the literature.

03 April 2016 3,035 0 View

How can I calculate lift force in Autodesk CFD simulation?

I'm making a 2D simulation of flow around cylinder, but I want to know the lif force prodeuced by a air flow. Also, want to know the force over the time.

03 April 2016 7,863 1 View

What happens if I add new equipment or processes to an existing thermodynamic cycle? Can it be patented?

What happens if I add new equipment or processes to an existing thermodynamic cycle? Can it be patented? Just looking for general opinions on the matter.

09 October 2015 9,301 5 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

How Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 View

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View