PEG-400 or PEG-4000 can be used as an alternative to PEG-1000 ?

I use PEG-1000 (poly ethylene glycol) in my synthesis process, but I only have PEG-400 and PEG-4000. So, what is an alternative to PEG-1000 ?

19 February 2020 2,142 3 View

What is the best way to add contact formulations in an FEA code ?

I am working on a finite element modelling problem in MATLAB. I had a code which did not take contacts between elements into account and the elements just went through each other. But I modified...

11 June 2019 5,222 5 View

How to prepare AS (III) stock solution for electrochemical detection

16 July 2017 8,898 4 View

How to change a 3 electrode deposition to two electrode system?

26 February 2017 3,690 4 View

Does pseudomonas degrade polyethylene bags?

to know easier way to degrade plastic using microorganisms.

23 July 2016 9,484 4 View

Can anybody suggest how methyl bis acrylamide (crosslinker process) react in presence of O-H and COOH functional group present in polymer?

Can anybody suggest how methyl bis acrylamide (crosslinker process) react in presence of O-H and COOH functional group present in polymer?

03 March 2016 6,524 7 View

Can I calculate the radius of gyration using GROMACS package? How do I install the GROMACS package in a windows machine?

Dear RG friends, Could me help me to resolve GROMACS

05 January 2015 3,953 7 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

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

Why does intensity drops as concentration increases?

Is there any reason for decrease in fluorescence emission intensity of HSA,BSA when increase the concentration ?

28 February 2021 3,653 4 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

Trouble with Charting with Google Earth Engine (Technical)?

Hello. I have a problem with the charting in google earth engine. I created an image collection by combining 5 image collections of five parameters and using ee.Join.inner ( ) and .apply ( )...

26 February 2021 7,084 2 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