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

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

I have designed reflectarray element and feeding it though Horn Antenna on HFSS. After full wave simulation, I am not getting desired results?

I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. After full wave simulation, i am not getting desired results i.e Radiation pattern...

01 March 2021 9,701 5 View

Why are my bands weird in this Agarose gel?

Can someone please give me some possible things that could go wrong? Here is my recipe: 0.5g Agarose 50 mL of TAE 1x 1 uL ethyl bromide. Gel was run at 100V for 1 hour. The buffer used is also TAE.

01 March 2021 9,952 3 View

Microstrip antenna design tutorial of HFSS 3D layout module ?

I have designed a 24 GHz rectangular antenna on HFSS 3D model and got desired results while desing the same antenna with same dimensions I am getting resonance frequency at 27 GHz I am...

28 February 2021 4,426 2 View

How to improve and implement WBAN MAC and Radio modules under Castalia 3.2 ?

Hello researchers, Hello Castalia3.2 researchers I am a beginner with Castalia, I work on optimization of RFID systems used in wireless body networks. I simulated a WBAN with 10 nodes and one...

28 February 2021 400 1 View

Compact antenna for the frequency range 1 MHz-5 MHz?

Hello everybody! I have a problem with developing a compact antenna for the 1MHz-5MHz frequency range. Tell me what type of antenna can be used and what books and articles to read to perform this...

27 February 2021 7,710 4 View

What is the better software for approximation of 3D surface with equations?

I have a massive of x, y, z coordinates of 2D surface in 3D space, which builded in Ansys HFSS or AutoCAD. How can I get the analitical aproximation of this surface by formulas?

21 February 2021 3,444 7 View

How to correctly choose the number of solution intervals when preforming harmonic analysis in ANSYS?

Good day, I design the rail-wheel geometry and the harmonic frequency ranges between 20-10kHz with 500Hz solution intervals and the results makes sense. Most of the time on the related literatures...

19 February 2021 3,190 3 View

Dataset for CNN based spectrum sensing?

I am doing a project concerning Cognitive Radio Networks, My project is about CNN based spectrum sensing. I need a dataset for my CNN model. The input data will be energy features from signals.

10 February 2021 954 3 View

How to model in HFSS or FEKO Free Space Material Characterization?

I am having trouble setting up this problem in HFSS or FEKO. In HFSS, I've tried both FEM and FEBI-IE solvers. With FEKO, I've tried it's MoM solver and default settings. I am would like model...

09 February 2021 375 2 View