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Questions related to Gas
Hello everyone Does anyone know how to estimate the black carbon emission rate? I need it for pollution dispersion modeling. Thanks in advance
16 June 2021 6,296 2 View
Hello Everyone, I am a very beginner to Quantum Espresso. I create input file using Cif2QE (Qetoolkit) for 2H MoS2 monolayer supercell (221). First, I have done ‘scf’ calculation to converge the...
14 June 2021 2,229 13 View
I'm going to make wax for investment casting. How can I make it? I know paraffin is one of its main substitutes, but what are its other components?
09 June 2021 2,748 0 View
In literature we can see a general molecular structure for saturates(CnH2n+2) and aromatics (CnH2n−6m) but there is no general structure for resin. so do they have one? If not, then why aren't...
31 May 2021 1,306 2 View
Hello everyone... Please, in electrochemical corrosion studies, what can explain the variation between the open circuit potential obtain during chronopotentiometry measurement and the corrosion...
26 May 2021 9,959 3 View
Hello friends, I intend to simulate the cementation process in porous media (i.e. granular soil). I'm not sure if I can model the cement slurry as a mere fluid with high viscosity and density. If...
20 May 2021 4,209 4 View
I want to detect hydrogen gas using GC TCD detector, and the carrier gas is Helium, but the response is very low due to the thermal conductivity of Hydrogen (0.1805 W·m−1·K−1) and Helium (0.1513...
28 April 2021 1,185 4 View
need help to find a good heuristic for multi vechile ?
19 April 2021 8,284 3 View
(First problem) In this studies, Pt is used as a catalyst to catalyze the oxidation of formaldehyde in this process, CO and formate are formed as reaction intermediate, in this case formate is...
06 April 2021 6,052 3 View
When commercially available silica gel (SiO2) and in-house synthesized SBA-15 mesoporous silica were taken as catalyst supports for the same oxidation reaction for same metal loading, both have...
29 March 2021 8,523 4 View
In Ecological Risk assessment procedures, What are the procedures of ecological risk assessment of polluted fresh water rivers and lake?
19 March 2021 9,005 9 View
I have a tank which contains natural gas at 250 Bar and 293 Kelvin. I want to cool the gas in a dry-ice cooling bath to about 195 Kelvin. The gas will flow in a copper-tube through the bath with a...
28 February 2021 8,486 1 View
Hi all The question is related to TGA(Thermogravimetric analysis). Thermal degradation easily understood but why do samples weight decrease? altough just binding is broked, the weight of...
27 February 2021 1,480 5 View
Dear researchers, I have small RNA data from stress and normal condition of two rice varieties (three reps). please suggest me a pipeline for snoRNA seq analysis from quality check to diff...
27 February 2021 8,043 0 View
In band diagram, influence of charge recombination.
17 February 2021 8,316 6 View
Hi there, In order to perform molecule dynamic simulation on gas adsorption on substrate materials, NVT or NPT ensemble is preferable ? Thanks!
09 February 2021 694 1 View
I am planning to hybradize Q-Learning algorthm with Genetic algorithm at the population initialization stage, crossover stage and mutation stage. The problem under consideration is a...
08 February 2021 3,339 8 View
Hi, I've N2 gas cylinder and 100 ppm NH3 gas cylinder. With these two cylinders, I'd like to make a ppb level (1- 100) concentration. Any idea how to do that?
02 February 2021 3,553 2 View
While the magnetite particles are much above single-domain limit, they indeed form spike-like structure under strong magnetic field. Would not that be predominantly caused by aligning of...
31 January 2021 7,104 3 View
Let h belong to C[x] (C = complex numbers). Denote by R_h the C-subalgebra of C[x] of the form C+(h), where (h) is the ideal of C[x] generated by h. Claim: C[x] is separable over R_h iff h is...
25 January 2021 6,030 1 View
hi my name is syahida. may i know the accurate concentration of lpg gas?? is it 250 ppm consider as dangerous gas in household? can you guide me to do the project of lpg gas detector system...
24 January 2021 9,645 4 View
Hello, I have several TGA curves of different compounds showing an odd weight gain/bump. The attached file is an example of some of these curves. I read oxidation can cause this if the purge gas...
22 January 2021 1,140 3 View
I have a range of gas stream temperature, and I wanted to get the optimum temperature in the gas compressors.
15 January 2021 3,379 3 View
I want to fixation Cl, K, Na in gasification slag, which type of catalyst can be used?
14 January 2021 2,319 2 View