Why can't I get an Sdr value when measuring surface texture parameters?

I am performing a texture surface analysis of a polished ceramic surface using an optical profiler; amongst the parameters I am measuring is the Sdr. I got values for the Sdr when I analyzed my...

25 January 2021 4,462 3 View

Does anyone know about vision-guided control of civil structures?

I would like to know more about the following issues: 1. Using images as feedback for the closed-loop control of civil structures 2. Simulating the vision-guided control on the computer without...

03 January 2021 7,566 1 View

Why the density of the buoyancy liquid should be less than or equal to 1 gr/cm3 in Archimedes experiment ?

Why the density of the buoyancy liquid should be less than or equal to 1 gr/cm3 in Archimedes experiment ?

28 December 2020 3,887 2 View

How can i redraw the published figures to reproduce them in my articles?

is there an application or website that can be used to redraw and edit the figures to re-publish them without permission from the main author?

21 December 2020 921 3 View

Has anybody done Mineral Potential Mapping using Artificial Neural Network in Matlab?

I would like to figure out how to integrate evidence layers using Artificial Neural Network (ANN) for mineral potential mapping (MPM) in the Matlab step by step. I will be grateful to you if you...

06 September 2020 2,413 4 View

Why i am getting pig spikes in the Avg fitness data from TinyGP?

hi all i am currently working with TinyGP which is a simple implementation of genetic programming for symbolic regression problems. so I am testing it with simple problems like sin(x) symbolic...

29 June 2020 9,720 2 View

Any suggestion with a mobile application can be to test hearing with reliable results?

I am looking for any experience with an application could be used to self test hearing with good reliability.

23 June 2020 6,876 3 View

How to increase diffusion of liposomes in invitro agar diffusion test ?

during a comparison between nano liposomes loaded with antibiotic and antibiotic itself in invitro antimicrobial assessment , we found that the antibiotic showed more inhibition for the bacterial...

23 February 2020 1,025 3 View

How to draw a 3D model for ALSIN protein?

Hello I'm trying to model ALSIN protein for my article. It is a quite large protein with 1657 amino acids. First, I tried to use SWISS-MODEL web server, but Based on its homolgy modeling strategy,...

13 February 2020 7,735 8 View

How to calculate the Permittivity of the cotton in the range from 0.5- 1.5 THZ needed to calculate the total pathloss?

I'm new in the field, working on characterization for a model of air , cotton , air in the terahertz band. I need to calculate the Permittivity of the cotton in the range from 0.5- 1.5 THZ needed...

14 December 2019 3,886 2 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

How to measure angle between laser travel path and machine axis in Laser Measurement system?

25 February 2021 1,987 3 View

Helix antenna coupling problem?

Dealing with a helix antenna, made with flexible material and not rigid like using a PCB board or wire. At the beginning of the helix is too close to the ground plane, causing coupling. How can I...

21 February 2021 4,453 3 View

Could the "incoming radiation (net radiation)" values be negative?

Could the "incoming solar radiation" values be negative? What is the difference between "global solar radiation" and "incoming solar radiation"? Which one might be measured negative values?

21 February 2021 7,726 9 View

In methylene blue test Why is UV absorbance reading very low as soon adsorbent is added and then increasing before reaching equilibrium?

Hello, I'm working on removal of methylene blue. 01. in the dark test very first reading is taken 15 minutes after adding adsorbent to the dye solution and that UV absorbance reading is very...

19 February 2021 472 5 View

How to calculate ultraviolet dose in Gy or J/kg?

Currently I'm doing a literature review regarding the comparisons of different types of radiation such as uv, electron beam and gamma radiation. But I'm having a difficult time converting uv unit...

11 February 2021 7,642 3 View

Design parameters of L1 frequency Helix antenna?

Could I please get the guidance on Helix antenna operated from 1.5 - 1.8 GHz. I am designing in hfss and not able to cover 1.5 GHz. Could I get papers or suggestions on numbers I use to cover this...

02 February 2021 622 7 View

Statistical methods for comparing gene expression curves?

Hi all, I have generated two gene expression curves by measuring bioluminescence every 10 mins for 12 hrs. These curves tend to overlap at at some time points, while a difference can be seen at...

02 February 2021 2,613 7 View