Why do we need to neutralize the charge of the system by adding ions before we proceed to energy minimization step in GROMACS ?

I am learning MD simulations using GROMACS and while I was doing a protein in water MD simulation a doubt raised. I was following the steps mentioned on the tutorials page and it said The system...

15 February 2021 5,514 4 View

Divergence detected in AMG solver for temperature and species , DEFINE_VR_RATE, Fluent ?

In 2D Model, Reaction in porous Zone, Error occurs on hooking UDF , DEFINE_VR_RATE in Fluent, .The error spikes just after running calculation after 1st iteration. Divergence detected in AMG...

16 November 2020 9,053 3 View

How to verify if a measuring system is working right?

We have 2 machines that test products. Both of these qualify the product to be Good or Bad ( Based on amount of leak ). The final outcome is attribute variable (Good/ Bad) whereas the way we...

16 November 2020 688 7 View

How to create a surface plot and contour? If i have an excel file with X, Y ,Z values of the surface ( Periphery of a tube) and Q (heat flux) value.?

Need to create 3d surface plot. Data I have X, Y ,Z coordinate of the pipe surface and the corresponding Q (heat flux) values at that point. Nearly 222440 data points of a 2m length pipe. Thank you

07 October 2020 9,854 7 View

Initialization in Fluent? Hybrid initialization or Standard initialization ?

Looking towards an incompressible flow (with K-e, turbulence model), with mass flow/velocity inlet and Pressure outlet boundary condition. Which initialization method preferred? How far it can...

05 October 2020 4,742 5 View

Why did it take humanity so long to start writing though we have been speaking for tens of thousands of years ?

They say we were just speaking and not writing anything for tens of thousands of years till a basic form of writing evolved just about ten thousand years back. Why this yawning gap ?

22 September 2020 5,313 7 View

Which is the best software to simulate chemistry of materials in correlation with their mechanical properties ?

ANSYS or ABAQUS donot correlate materials chemistry wirh the observed or simulated mechanical properties. Is there a software that can do this structure to property correlation. ?

22 September 2020 1,171 3 View

Is there any cost-effective, simple and efficient way to analyse and estimate the amount of vitamins in algal samples?

I am currently pursuing my research in Phycology. I'd like to know if there's any simple and cost-effective method to detect and analyze nutrients and vitamins in the algal matter. The experiment...

18 September 2020 4,081 3 View

Which research institutes in India have an algal identification facility?

I am currently pursuing my research in Phycology and planning to conduct a study on microalgae. Is there any place where I can send my samples to be identified? (Preferably in South India) Also,...

17 September 2020 4,440 2 View

How is the co-expressed genes regulatory network plotted? Is there any Bioinformatics tool for the same?

Hi, I am working on molecular validation of co-expressed genes in Rice under moisture stress. I have a list of genes that are co-expressed in three rice varieties, under a particular set of...

12 July 2020 7,494 1 View

What is the difference between the supplementary cementitious materials and alkali-activated concrete?

18 February 2021 9,188 3 View

Good day sir/ma. Please, where can I have access to equipment for conducting XRF, XRD and SEM analysis?

I'm using blast furnace slag for stabilizing subgrade soil.

17 February 2021 7,333 3 View

How cane capture of Cl, K , Na, in the process of biomass gasification, I want to let these elements enter the solid slag phase but not enter the gas?

I want to fixation Cl, K, Na in gasification slag, which type of catalyst can be used?

13 January 2021 2,145 2 View

How to obtain V2O5?

Hi everyone! I`ve question about vanadium pentoxide. Exactly about precursors for the synthesis, about conditions. For example I need to obtain V2O5 powder, should I firstly obtain NH4VO3, or I...

11 January 2021 1,382 4 View

Can we mix elemental powders of 325 mesh using an agate mortar and pestle?

Elemental Powders like Titanium, vanadium, tungsten, zirconium, hafnium.

04 January 2021 7,357 1 View

Possible to made new industrial applications as composite materials from waste material steel slag and sludge?

Excellent industrial application from recycle the waste steel slag and sludge materials. abrasive tools and cutting tools, if possible as composite materials

22 December 2020 2,167 3 View

Is it possible to convert Fe2O3 to FeO for Electric Arc Furnace (EAF) steel slag?

I have done WD-XRFS analysis of slag samples, there Iron oxide gives as Fe2O3 but from literature and XPS analysis I have seen, majorly Iron stays in the slag as FeO in EAF, Hence I want to...

06 December 2020 7,973 2 View

Will there be effect of around 4wt % B2O3 in ladle slag on refractory erosion?

The effect of B2O3 additions on CaO-MgO-SiO2-Al2O3 based slag/flux was studied by many researchers. B2O3 addition helps in lowering the viscosity of slag which helps in eliminating the sticking of...

28 October 2020 6,722 6 View

How can the percentage of solid and liquid phases be determined in the CaO-FeO-SiO2 ternary diagram?

The attached ternary phase diagram is related to the CaO-FeO-SiO2-5%Al2O3-5%MgO system. As shown in the diagram, area number 5 is related to the stability of Liquid Slag + (Mg,Fe)O ((Mg,Fe)O is...

16 October 2020 2,201 3 View

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28 April 2020 8,048 3 View