What is your plan for summer holiday!?

Traveling, more Conference, Tourism, talk about your plan maybe I can be your partner, I am sereaching tourism and work partner during the second half of June, July, and August I am waiting for...

04 May 2018 135 0 View

How to Get a Nano of Micro Powder in a Mechanical Way?

I have micro polyethylene powder, and want to get nano particles such as milling or any mechanical method. Could I get the Nano by chemical method? Best regards Mohammed

05 June 2017 6,487 0 View

How to investigate the anticorrosion of non conductor coating?

Could anybody tell me a method or a device has to test the anticorrosion of insulated coating for low carbon steel content steel-106?

04 May 2017 272 4 View

Is Tetrahydrofuran (THF) a good solvent for bitumen, Do you have a suggestion?

11 December 2016 9,631 0 View

Could anybody tell me how I get the last version of the CFD program (Fluent +Gambit)?

07 August 2016 994 1 View

What's the best way to concrete coating by using the bitumen?

06 July 2016 1,495 4 View

Can I get FTIR analysis for Semi-Solid material (e.i like wax)? Also can I know the exact percentage composition of this material by FTIR?

Semi-Solid material (e.i like wax)? OH (inter molecular hydrogen bonding), C-H, (CO), and asymmetrical C-O-C , Also can I know the exact percentage composition of this material by FTIR? Material I...

04 May 2016 5,286 9 View

Kindly can anybody here tell me how to make Bitumen Diluted (solvent % (vol or wt%))?, I know the best solvent used in this regard is Tolune?

I need to reduse the Bitumen viscosity for concrete coating purpose

03 April 2016 7,079 3 View

How I could know the chemical formula or chemical composition of a polymer has been degraded by chemical heating process?

For example: Degradation of Polyethylene Terephthalate (PET), FTIR couldn't give the total composition of materials, but focus on the bonds have been appeared.

01 January 1970 8,133 4 View

Could anybody have an explanation or experimental reference about thermal spray coating by polymer?

01 January 1970 3,007 0 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

Heat exchanger with liquid Nitrogen as coolant?

I want to cool Natural Gas from 195 Kelvin to 138 Klevin in a heat exchanger by using liquid nitrogen as the coolant medium. When entering the heat exchanger, the liquid nitrogen will have a...

01 March 2021 6,450 5 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

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