Why did the authors design a sociodemographic questionnaire?

This is a question from a journal reviewer who asked my manuscript. Can someone please guide me on how to prepare the reviewer's answer? Thanks. here is reviewer question. why did the authors...

16 November 2020 735 2 View

How can I fix the capacity curve of two different structure?

I have two frames for nonlinear analysis, one of them is CBFs and one of them is BRBFs ( the generals are the same, only lateral elements are different). When I drew the capacity curve of my...

11 November 2020 10,034 3 View

Why the initial pressure in a fluid cavity simulation in Abaqus fall to zero just at the starting increments?

I am using fluid cavity capability for simulation of a water-filled container with Abaqus-Static-Standard. The container has an initial pressure and is been surrounded by another solid layer with...

21 March 2020 7,153 3 View

How can I save normal directions of solid elements in Abaqus?

Dear all, I need to have normal directions of solid elements in my 3D simulation with Abaqus. I know that in Visualization Module, Options tab> common or superimposed, there is the possibility...

28 February 2020 2,703 3 View

No title

I'm trying to collect milk from our knockout mice (at the end of the lactation stage) to isolate milk exosomes. But I have a hard time with milk collection from mice. I have used either pump or...

22 January 2020 4,527 1 View

Should the working memory capacity of EFL learners be measured by L1 or L2 memory span test?

The capacity of the working memory is commonly measured by asking participants to remember a list of items and then counting how many letters they can repeat. I have noticed that for some L2...

26 August 2019 2,497 2 View

What is curtain gas in LC-MS technique?

is collision gas is the same with curtain gas in LC-MS technique? and as a whole what is curtain gas in LC-MS?

22 January 2019 2,823 5 View

How to do a repeated measure anova in spss with two unmatched groups?

We conducted an intervention study with three measurements of fear in three time points. Results showed that two groups were not matched for two demographic variables (education level &...

13 January 2019 8,071 3 View

Can we use insulin instead of injection as an eye droplet?

Many people around the world need to use insulin and they are not interested in taking medication in the form of injections. Injections also decrease the patient's quality of life. So is there...

12 October 2018 9,604 4 View

How do I invitro transcription?

Hi I am trying to do a pull down test so, in the first phase I should do invitro transcription for that I am using of T7 RNA polymerase from promega company. I designed a forward primer with T7...

12 October 2018 3,890 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Standard curve shifting over time. How do I stabilise the ELISA?

24 February 2021 1,365 3 View

How does the injection volume impact LLOQ and ULOQ in regression analysis (LC-MSMS)?

Hello, I have run into an issue that has sparkled a debate at work: is the LLOQ/ULOQ impacted by injection volume under the following circumstances: 1) Same dilution factor of all samples 2)...

23 February 2021 9,159 3 View

Using the Pfaffl method: Is it possible that the ratio of the calibrator does not equal 1?

Hi all, I have a question regarding calculations using the Pfaffl method. I have 3 groups per experiment: 1 control group (calibrator) and 2 treatment groups with 6 to 7 biological repeats per...

19 February 2021 8,351 2 View

How to estimate/know plant virus concentration to make a standard curve in ELISA after serial dilution?

Hello, I am trying to know tomato virus titer/concentration in samples and I will perform serial dilution of the positive control. I wanted to ask How to estimate/know plant virus concentration to...

13 February 2021 6,534 4 View

XRPD Quantification - Building a calibration curve of drug excipient?

I am aiming to utilise XRPD to quantify a drug excipient within a drug product and have been having a little trouble building the calibration curve to allow for this quantification up until this...

10 February 2021 6,145 3 View

Gain and offset values in Sentinel-2 L1C?

Hello everyone. I have been trying to apply radiometric calibration on Sentinel-2 L1C images (bands 2,3,4 and 8), but every time after layerstacking I come across this error: "Calibration...

28 January 2021 7,160 1 View

What is a good software for non-linear curve fitting rather than Excel and Lab Fit?

I am looking for good software for curve fitting. My curve equation is non-linear. I used Lab Fit and Excel software but could not find the curve equation with good accuracy. What software do you...

20 January 2021 5,554 13 View

How can you confirm new liquid FTIR cell fits calibration?

We have an FTIR instrument which was calibrated in transmission/absorption mode using a set of cells for different ranges of D2O concentration. One of the cells at high range broke and the new one...

16 January 2021 4,791 2 View

Standard addition calibration without blank matrix available?

I have a problem of analytical chemistry. We are working on a spectroscopy technique (FTIR) for the quantification of a mineral phase in complex matrices. We intended to use chemometric techniques...

12 January 2021 7,739 1 View