How to calculate distance between antenna and metamaterials ?

Hello every one, I'm working with a bowtie antenna based on metamaterials. How can i calculate the distance between the antenna and the metamaterial unit cells in order to resonate at the...

07 September 2020 1,077 5 View

PTC( positive temperature coefficient) materials , is there any way to cool down faster these materials after curing them?

I need at least an overnight to measure the resistance of a PTC ink after curing it. I am looking for a faster way to have the resistance value.

19 March 2020 9,827 3 View

Is there a database for miRNA of cancers?

I am searching for miRNA database that contains the nucleotide sequences of cancers in the human genome. I have found a database that characterizes the samples by the number of reads_per_millio...

07 March 2019 9,628 3 View

Is there a database for C.elegans RNA?

I wish to locate miRNA in C.elegans based on the signal processing tools; so i have to know the RNA sequences of the entire chromosomes. I would appreciate all the help I can get, thanks.

28 January 2018 9,958 4 View

How to write a custom function for distance for the fitcknn?

Hello, hello , I need a matlab code for using custom function(distance function) for distance parameter with ficknn or classificationknn. In fact i want to define the distance below...

18 May 2017 2,658 1 View

Weighted sum error in discrete adaboost should be small than 0.5 and great than 1

Hi, I'm confused with the condition of the sum eeror for a wek learner. Sometimes i find a condition that err

15 January 2017 1,276 6 View

What is the residence time of dust aerosols over the MENA region (below 1.5km, near surface)?

I am trying to estimate the residence time of dust aerosol over the MENA region. I have tried to compute it using the equation T=fct(radius, normalized_radius,Twet). But, Twet varies with the...

29 November 2015 8,626 5 View

Where can I find a free database for C.elegans nucleosomes?

C.elegans nucleosomes.

16 September 2014 5,655 3 View

I am looking for the global maps of soil clay fraction, soil texture, and soil erodibility?

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12 February 2014 7,248 1 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

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

What techniques can I use to determine the miscibility of polymer blends?

The term miscibility refers to the single-phase state in thermodynamics. I do not mean the compatibility of different components. To determine the miscibility I know several techniques such as...

03 March 2021 4,107 4 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

Shall I skip the measurement model in SmartPLS?

Hello everyone, I had run a mediation model in SmartPLS using questionnaires that were already validated among my statistical population. A professor who edited my paper -though she is not...

01 March 2021 3,052 3 View

What is involved in morphological changes of SEM images of a substance?

In the sem analysis of CaCO3 nanaoparticles, the morphology images showed spherical shaped particles but the proposed morphology for these type of nanoparticles is trigonal. I prepared the...

01 March 2021 1,960 4 View

Does anyone know HRM channel in a 2 plex QIAGEN Rotor- Gene Q qPCR can be used as a separate channel?

I am going to have 3 different probes in my qPCR work that I am going to do. But I realized that the machine we have in the lab is a Rotor-Gene Q 2plex HRM Platform, saying it has green, yellow,...

01 March 2021 8,544 1 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