Why modal significance of designed metasurface antenna constant as shown in the figure ?

I designed the metasurface antenna C band and X band applications. it provides very wide bandwidth with more than 10 dB gain . I used characteristic mode analysis (CMA) in CST. the result provided...

03 August 2020 5,374 2 View

How to plot this simple step pressure response of an integral controller using SIMULINK?

I don't know how to use SIMULINK... Also, the science of control systems is my Minor field of research ... I want to enhance my skills for this field.. Help me to plot and estimate the...

06 February 2020 8,302 16 View

Do you have any application of thermal engineering that is solved using SIMULINK?

I'm searching for MATLAB/SIMULINK tutorials that predict the temperature or pressure response of any negative feed back closed loop control systems such as: 1- Temperature control of fluid in...

08 December 2019 3,221 5 View

What is the best Simulink text book that is most suitable to solve applications of thermal engineering?

Hi.. What is the best MATLAB text book that is most suitable and full of solved examples to teach students how to solve applications of thermal engineering using Simulink?

05 December 2019 8,241 2 View

Why inorganic perovskites are unstable?

I know organic-inorganic and all-inorganic perovskites are unstable, the first one is due to reaction organic cation with the moisture, and inorganic perovskites are "electrochemically " are not...

01 June 2019 2,429 2 View

I got a liquid DNA primer! does anyone worked with liquid primers before? and it came without colling! no dry ice , nothing?

Infos I have on the sheet is 23.3 nmoles, OD 5.20. The question is, is it already 100mM or do I need to dilute? No idea! Please let me know if you have experience with this!

19 June 2018 4,201 4 View

is there an equipment (a method) to measure tissue pH from outside (e.g. percutaneous) ?

i would like to gauge the effect of certain food, drugs etc. on the pH deep tissue.

28 March 2018 7,490 2 View

What are the recent advances and studies in early ( pre-clinical )detection of occult breast cancer?

Most available diagnostic methods for early detection of breast cancer detect tumor after it had reached a relatively dangerous size concerning tumor pathogenesity. Besides , most are either...

08 December 2017 1,634 3 View

What's the proportion for the peak area of identifiable compounds based on NIST database to the total detected products used GC-MS?

25 July 2017 7,830 10 View

Do you know a questionnaire for strategic ignorance?

do you know questionnaire about strategic ignorance. thank you.

14 December 2015 3,769 2 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 3 View

How Can I bring as much common elements in steel as possible to calculate stable phase(s) in OpenCalphad?

As I was tweaking step-by-step OpenCalphad6 Macros step1.ocm involving phase and thermal property calculation of a High-speed steel, I could not incorporate more than 6 elements in the steel...

01 March 2021 8,840 1 View

How can you bring two structures together to create an adhesive bond in LAMMPS?

I have created an Ice 1h crystalline structure and an Aluminium substrate structure and equilibrated both at 250K. Now I need to bring them together in a way that an adhesive bond is created....

01 March 2021 3,325 2 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

Is anyone familiar with the cyclic compressive fatigue testing (BS EN 12697 - 25) ?

I would like to get more information on the cyclic compressive fatigue testing (BS EN 12697 - 25) which is typically done for bituminous material in pavement design. Any one can advise on the...

28 February 2021 2,004 3 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