VIF very high, but correlation is low and coefficient is significant. Which one whould I choose?

Hello. I have a question whether if my coefficients (statistically significant) would be valid when VIFs are really high. In my model, there are independent variables(IV), moderating variables...

26 February 2021 956 13 View

How to clean up TEM grid with plasma cleaner?

I need to clean the hydrocarbon contamination on the carbon substrate of TEM grid. However, I heard that substrate could be broken by the powerful plasma. My substrate is pure carbon, with ~3nm,...

23 February 2021 3,262 5 View

Sb2Te3 thin film annealing and damage(break)?

21 January 2021 9,642 2 View

When comparing two very similar surveys taken over time, but with different sample size, what would be the best way to approach this problem?

Hi, I'm currently analysing a survey for a university course design, and some guidance would be very much appreciated. The students who are enrolled in a (year-long) course were given a link to...

08 December 2020 6,624 9 View

When analysing survey using Likert scale, is it okay to use Friedman's test?

Hi, I'm currently analysing a survey for a university course design, and some guidance would be very much appreciated. The students who are enrolled in a course were given a link to participate...

06 December 2020 6,060 2 View

Which time-serie model is good when using concatenate data?

I would like to make a model using sequence datasets. As I've searched that , many LSTM, RNN tutorials use long-sequential data such as weather in 1950-2020. However, my datasets are short...

24 November 2020 808 3 View

Could you answer some basic questions on CRISPR-cas9?

Hi, I would like to ask simple some questions related to CRISPR-Cas9 that I could not understand by reading some basic articles on it. I am not in that scientific field so my questions might be...

21 October 2020 2,439 2 View

How can I design resin column for test?

I'm interested in the research field of ion exchange resin. I want design about resin column with acryl for test. How do you usually design the diameter and length of small columns for test? I...

13 October 2020 3,443 2 View

How do you check the locations of brain-implanted cannulas?

Hello. I implanted single cannulas bilaterally into the brains of mice to infuse drugs. After behavior tests, what would be the simplese way to validate if the cannulas are in the target areas?...

18 September 2020 8,457 3 View

Why this HPLC data show negative peak?

Lysine was dissolved in mobile phase and injected in HPLC but there are two peaks. One for positive at 2.1 min and another for negative at 2.8 min? Contents of moilbe phase are ACN:Water:TFA =...

08 July 2020 2,695 13 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 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

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

Does the circuit modeling for planar monopole antennas using Foster canonical forms give good approximation?

Hi researchers, I am searching for some accurate way to do the circuit modeling of planar CPW-fed monopole antennas. I have gone through the literature where mostly circuit modeling is done using...

28 February 2021 7,016 1 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

What is Flat Lens Antenna?

28 February 2021 5,433 3 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

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

Runs of nucleotides in Sanger sequencing?

I performed site directed mutagenesis, transformation, and then I sent out plasmids for Sanger sequencing and found out that there is extension of DNA just before the stop codon. I am not sure...

27 February 2021 547 3 View