Aspen plus (hydrometallurgy set-up) & reactions solid-liquid ?

I have to simulate a hydrometallurgical process where there are the following phases: - leaching (solid-liquid reactions) - cementation (solid-liquid reactions) - electrowinning (energy ) -...

30 January 2021 9,225 3 View

What is any peak other than 11 on the xrd in synthesis graphene oxide?

i use 3 gr graphite H2SO4 120ml H3PO4 13,3 (9:1) and i varying KMnO4 10gr 15gr and 20gr with time process 8 hour (4 hour stirrer graphite H2so4 and H3PO4 temp 97 degg ) and 1 hour adding slowly...

20 August 2020 260 4 View

Varying kmn04 and hummer synthesis time methods for graphene oxide, affected or not?

i use 3 gr graphite H2SO4 120ml H3PO4 13,3 (9:1) and i varying KMnO4 10gr 15gr and 20gr with time process 3 hour (2 hour stirrer graphite H2so4 and H3PO4 temp 97 degg ) and 30 minutes adding...

17 August 2020 4,928 14 View

How do I add the full text of past publications? Do I have to scan them myself and load?

I received a notice that 13 of my papers are not available on line.

09 April 2020 9,419 3 View

Can anyone help me about errors of Process Macro multiple mediator analysis with model 4?

When I start PROCESS I get two error messages: ->Error 12410 Source operand for EVAL is not balanced. > >Undefined error #12354 - not found in file .. How can I solve this...

26 March 2020 6,738 2 View

How to input multiple conditions in excel IF nested function?

Hi community, I am facing some issues to input the conditions when I use the IF formula. Can anyone please enlighten me on this? So far, I have this formula, =IF(B1

19 January 2020 7,558 2 View

Has anyone carried out public health expenditure reviews on spending on nutrition in their country ?

If you have carried out national budget analysis for nutrition expenditure I would love to read your research findings

03 October 2019 5,213 2 View

What established models/guidelines for sustainability reporting exist?

Each company may choose to build their own sustainability report, with their own indicators. However, what are existing models/guidelines/tools/templates available to be adopted by a company to...

15 August 2019 8,910 5 View

NDVI vs EVI for mining environmental impact assessment. Which one is better?

Greetings! I am doing some environmental assessment studies using GIS and Remote sensing applied to mining areas. Which of the previous index would you recommend to do that.

07 August 2019 722 4 View

Can anyone recommend a free HPLC prediction program?

Hi everyone, Can anyone recommend a free HPLC prediction software/program to predict Retention times of a few molecules using various flow rates and/or columns? It would be very useful. Thank...

07 January 2019 5,181 6 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Where can I find life cycle inventory or assessment of non woven materials?

Dear network, I am looking for the LCA or LCI or at least the energy balances of the non woven fabrics process for my master project, in specific for natural fibers, yet I have found...

02 March 2021 9,662 1 View

No title

01 March 2021 3,905 5 View

Which group formation theory do you recommend for projects that aim to bring together entrepreneurs for training for regional development?

I would like to have ideas about which theories of group formation are suitable for entrepreneurial training projects, with the aim of creating bonds, building trust, and collaboration for...

28 February 2021 4,223 2 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

What is the most common number of epitopes in an multi-epitope Vaccine?

hi everyone, I'm interested in the field of vaccine design specifically multi-epitope cancer vaccines , I want to know if there is a minimum and maximum number of epitopes we could use in a...

27 February 2021 3,882 3 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

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

Standard curve shifting over time. How do I stabilise the ELISA?

24 February 2021 1,365 3 View