Hi I'm trying to find a list of gas permeability values for Paraffin for Oxygen and Carbon Dioxide?

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Why the CHi^2 is close to zero with a bad fitting but the Rp and Rwp are still high?

I am refining my XRD data using in FullProf program. The intensity of the modulated X-ray peaks is almost flat. I tried to adjust the peak intensities but unsuccessful. What is the reason? I guess...

23 February 2021 2,304 4 View

Are there any remarkable processes in practice to valorise both solid and liquid contents of city waste to fine chemicals?

Could anyone please suggest me a good texts/methods about city waste management towards the fine chemical ends? I am interested to develop methods to process both solid and liquid parts to...

01 January 2021 6,201 5 View

Hello Researchers, can organizational socialization effects on organizational ambidexterity? what's your opinion?

organizational ambidexterity simply talks about explosive and explorative innovation and how can this variable used with different variables i.e. leadership, resources, organization antecedent....

28 December 2020 4,022 3 View

Why peaks are shifted in XRD anlysis ?

I have synthesized zinc oxide nanoparticles by physical method (sputtering) direct interaction of plasma with zinc target and it is done in atmosphere. The sample were prepared at different...

18 December 2020 10,010 6 View

How to determine Friction coefficient in orthgonal milling?

I have used a Pin-on-disc tribometer to find the friction coefficient. However, now I am getting feedback from some seniors that I need to get a friction coefficient from orthogonal milling. There...

15 November 2020 8,151 9 View

What is your opinion about this UV-Visible spectra of Graphene oxide?

? As I have synthesized graphene oxide following the Modified Hummers method.One thing I understand that the absorption is too high but what is the reason behind this distortion and how I can fix...

05 November 2020 7,540 4 View

How to write result and discussion regarding 16S and ITS2 soil microbiome?

Hi everyone, I have a problem about how to write a result and discussion for my research project. It is about bioinformatics result from rhizosphere soil and bulk soil. I am lost and not sure...

07 July 2020 7,434 6 View

How to calculate kinetics using TGA data in excel?

I have tried to calculate kinetics in spreadsheet by Method of Coats Redfern but i did'n get the correct result of Ea. I got negative value instead of positive. I think my formula is'n correct....

23 June 2020 1,781 7 View

What is the expected time in which COVID-19 (Novel Corona Virus) would vanish from the surface of the Earth?

Dear Fellows With the developing stories of the spread of COVID-19 all around the world, which has been declared as a pandemic by WHO recently, I am wondering, in how much time this virus would...

11 March 2020 3,381 41 View

What is the recommended tool to assess the quality of case-control studies included in a meta-anlysis?

I am working on a meta-analysis of case-control studies. I used Newcastle-Ottawa scale (NOS) to assess the quality of the studies. I couldn't find a good reference to interpret the results...

08 March 2020 7,961 4 View

How to quantify carbon deposition on CuZnAl catalyst?

Dear All, I want to quantify carbon deposition on the surface of the CuZnAl catalyst. I have tried thermogravimetric analysis, but I've got weight gain as the active Cu- get oxidised. Does anyone...

01 March 2021 1,907 3 View

Why Trivalent chromium start precipitating above PH 5 ? Moreover discuss difference between adsorption of chromium and precipitation of chromium ?

I am a student of MS Environmental Engineering and started my research phase. I am working on metal removal ( chromium iii ) by using activated carbon prepared from the agricultural feedstock. So...

01 March 2021 5,475 2 View

What is the procedure to determine the permeability of concrete?

can anyone help me in this, it will help me with my research work

01 March 2021 834 3 View

Which fluorescent dye to use for measuring total ROS production?

Is DCFDA appropriate for measuring total ROS production, or can it only detect certain types of ROS? If I want to measure total ROS production, which dye should I use?

01 March 2021 9,447 3 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

How can I assign a velocity along one direction to CO2 molecules in a molecular dynamics simulation using GROMACS?

Dear all, I am trying to perform a MD simulation about the interaction between CO2 and a polymer. I create my model, solvate it and perform the NVT and NPT equilibration. Now I am not able to...

26 February 2021 10,014 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