How can I interpret the values of zero-sequence impedance in the pic. and use them for short circuit current calculus in a 3winding power transformer?

I have a three winding power transformer with the zero-sequence impedance values given in the picture. I need to model those in a equivalent circuit for simulation purposes.

23 December 2020 3,866 1 View

How to Interpret Box Plot IQR?

I have a unidimensional marital satisfaction scale (Johnson, Zabriskie, & Hill, 2006) with five items. My sample was 194 married individuals, and using the data from my sample, I wanted to...

29 September 2020 6,595 3 View

How can i dissolve curcumin in ethanol (% of ethanol?) for antimicrobial test ?

I want to test the antimicrobial properties of curcumin, is ethanol the best solvent? if yes what is the least percent concentration i can use to dissolve the curcumin powder?

21 September 2020 5,890 5 View

Do you think that schools could resume quickly after the lockdown period due to the emphasis on social distancing, following the Covid-19 pandemic?

It may be difficult for schools to resume immediately after the lockdown period as a result of the emphasis on social distancing rules, following the Covid-19 pandemic?

27 April 2020 9,766 96 View

How does one compute energy eigenvalues in atomic unit?

please find attached question Thank you

20 April 2020 4,025 9 View

How to take advantage of the social isolation generated by COVID-19 to boost the transition from face-to-face education to remote education?

The isolation generated by the COVID-19 pandemic has forced most of the world's universities to choose remote or virtual classes. In the case of engineering programs and other programs where real...

28 March 2020 2,350 57 View

In which powder bed fusion equipments have been implemented the skywriting scan strategy?

25 March 2020 8,679 4 View

Is it possible to reduce energy consumption without affecting human well-being?

Climate change is a reality. Responsible for this change is the excessive concentration of CO2 in the atmosphere, mainly due to the requirement of electricity at the residential, commercial,...

13 February 2020 8,805 12 View

How to estimate charge transfer and polarization resistance in a battery?

Hi. I have performed many EIS experiments using a cylindrical battery at different temperatures and state of charge. Some results (near SOC=0) are as the attached figure. How can I find the...

08 July 2019 1,746 2 View

Anyone experienced in using Dab library from Daniel Christ?

I have been troubleshooting the use of this library for the isolation of antibody fragments for a couple of months with some success.However I went into some troubleshooting. I'm looking for...

16 June 2019 8,389 3 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

Which cell line should we use to perform biological dosimetry experiments?

We are preparing some experiments based on irradiating cells under different conditions in order to evaluate the effects in terms of DNA damage, genetic expression, etc. As our project is...

01 March 2021 3,355 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

For modelling epoxy-based matrices (in composites), which model in ABAQUS is the most suitable, Concrete damaged plasticity or Drucker-Prager model?

I am working on developing a micromechanical FE model for predicting kink-band formation in UD composites. To model matrix plasticity, which model, out of Concrete Damaged Plasticity and...

28 February 2021 5,415 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

B-mercaptoethanol (BME) protocol?

Hi everybody, I have been running a multiplex IHC which allow me to stain the same tissue with different markers (Primary Ab + Secondary conjugated Ab) (AF487, AF555, AF647). Since I would like to...

27 February 2021 5,028 2 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