Recent content by Hyo X

What do you mean by actual presence of a particle?

http://www.climatetechwiki.org/technology/straw-ammoniation-and-silage seems like it would reduce methane emissions

Has this study been done? It seems the ammoniation [using ammonium hydroxide] of low-quality straw to increase digestibility of the feedstock is an established practice. Also, cows are a pretty big producer of methane, a significant greenhouse gas. Does treating with ammonium hydroxide the...

I must have my terminology wrong! The sample resistance must be the source. it is the resistance between the V+ and V- inputs of the amplifier. The load resistance should be negligible as this output voltage goes to a data acquisition system. How can i reduce the drift of the output of the...

Thats the lowest resistance of the samples I characterize. It is set by physical limits and we can't reduce it. Other samples have 10 Gohm or higher resistance.

I built a voltage amplifier based on the AD625 instrumentation amplifier. This chip has a 1 G-Ohm input impedance. When the load has a resistance of 100 kOhm, output drift is negligible. When the load has a resistance of 100 MOhm, output drift is significant and not acceptable. Are there any...

Most solvents we use in the laboratory have some shelf life. Experimental example: Say you have a 4L bottle of anhydrous toluene and you regularly pour out/use small volumes of it over the course of a year. One year from opening date, you have 1L of toluene left. Will this toluene still be...

By yield you mean dopant concentration? How do you characterize dopant concentration? You could try cycling the material. run the process with the dopant, then take the doped crystal and melt it and cycle it again. run it many times to increase the dopant conecntration slowly.

Lets assume AB is GaAs. Is element C substituting only into the B sites? AB (1-x) Cx or both sites A(1-x/2)B (1-x/2) Cx? If you can control the atmosphere around the AB so that even if C is a gas, AB is exposed to high concentration 100% C, does that help?

Band structure. In your material the silicon determines the band structure. One phosphorus atom can lose its electron to become delocalized. but the effect of its extra proton (which is confined to the nucleus) is minimal because the matrix is silicon.

Thanks for your help DrC. I want to revisit my gendanken and replace the non-blackbody molecule in the vacuum box with a blackbody solid metal, and figure out the appropriate energy distribution for electrons. Let's say there is a sphere of solid metal floating in vacuum in a box with walls at...

I'm trying to understand the meaning of kT (energy) in molecular systems, how to define the temperature of an individual molecule, and how a molecule receives thermal energy or dissipates thermal energy. Here is my 'gendanken': One molecule is floating in a box, in vacuum. The temperature of...

highest calculated vibrational state for diatomic hydrogen: 5481 cm-1 = 0.68 eV Boltzmann distribution at kT = 0.2 eV (2000 Celsius) :: exp(-0.68/0.2)=0.032 diatomic hydrogen dissociation energy: 426 kJ/mol = 4.5 eV per molecule. http://cccbdb.nist.gov/vibs2.asp...

A. Most probable for hydrogen molecules in a "blast furnace." Ambient thermal energy kT is greater than the bond energy and the diatomic hydrogen easily overcomes the energy barrier for diossociation. B. unlikely. Diatomic hydrogen is very small, and the idea that the location of impact of...

dp/dt = L/(t*deltaV) change in specific pressure over change in temperature is equal to the latent heat of vaporization divided by the temperature times the change in volume associated with the phase change. dp = change in specific pressure dt = change in temperature L = latent heat of...