How to calculate enthalpy of melting of any other change with DSC 131evo ?

I'm using DSC 131evo, the heat flow is given by uV, and when performing peak area calculation, the heat is given by uV.s/mg. How to change this unit to J/mg or J/mol.

09 October 2018 8,051 1 View

What is the best technique to be used for particle size distribution analysis for nano- to micro particles?

One of the characterizations of synthesized nano-particles is particles size distribution. But what method or technique is the best ??

31 December 2017 429 7 View

What is the meaning of (non-monotonic pressure) practically wit obtained results of gas adsorption analyzer?

Complete isotherms (Adsorption - desorption) of N2 was done using QuantaChrome iQC 6.... some of the data results are said to be non-monotonic pressure, what is the meaning of this message and...

11 December 2017 9,672 2 View

Why the combustion column of CHN-S-O analyzer breaks after 2-3 run ?? (PerkinElmer )?

06 July 2017 2,628 0 View

In the process of determination of SSA and pore size of polymer materials, does the step of outgasing (de-gasing ) is medded??

01 February 2017 4,882 4 View

What is the exact meaning of refractory compound? and what are they ?

03 April 2015 5,959 0 View

How metal , like platinum wire or silver wire, is weld to glass? for example to build up a discharge lamp??

31 December 2014 1,475 2 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 View

Necessary tube lenght to cool Natural gas in a dry-ice cooling bath?

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...

27 February 2021 8,128 1 View

Exit velocity of natural gas from pressurized tank?

Hi Guys. I'm a mechanical engineer and have a bit trouble, would be very glad if you could help me with my questions. I have a pressurized tank which contains Natural Gas at 200 Bar and 293...

26 February 2021 6,253 3 View

Gas sensor response and recovery time independant of flow rate and chamber volume?

I am trying to obtain the response and recovery times for my gas sensor device. It appears the the response/recovery times are primarily dependant on the flow rate of the gas I inject into the...

26 February 2021 1,511 3 View

Why do a weight decrease for thermal degradation in nitrogen gas condition?

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...

26 February 2021 1,100 5 View

Why do the air flow results vary totally when adding scalar in CFD ?

Dear All, We are using Autodesk cfd to calculate the air flow in a single sided naturally ventilated room, where air flow depends only on buoyancy due to temperature difference between inside and...

25 February 2021 9,602 4 View

Aspen Plus Error: Unknown or undefined bead number?

Hello, in my Aspen Plus Simulation (see attachment) there are two heat exchangers. One HEX1 (oil+gas) ist fed by hot gas which ist coming out of a burner. The other HEX2 (gas+gas) shall work as a...

14 February 2021 8,096 2 View

NVT or NPT is preferable for gas adsorption simulation ?

Hi there, In order to perform molecule dynamic simulation on gas adsorption on substrate materials, NVT or NPT ensemble is preferable ? Thanks!

08 February 2021 173 1 View

How can I convert permeability unit from barrer to m^2 for using COMSOL MultiPhysics?

I am looking for gas permeability of PDMS for simulation in COMSOL MultiPhysics and using creeping flow , fluid and matrix properties. The permeability unit in COMSOL is m^2 whereas I have the...

08 February 2021 4,305 2 View

Any reference paper with detailing on how to hybradize Q-Learning algorithm with Genetic Algorithm, especially for a variable optimization problem?

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...

07 February 2021 3,123 8 View