What is a suitable age and size for tilapia to be immunocompromized?

More Khalid Shahin's questions See All

What thickness need for ITO to use as conductive layer?

I want to do RF sputtering of ITO on glass substrate using magnetron sputtering. what thickness do i need to make it good conductive layer to use it for PSC. Moreover, whats about thickness of...

01 March 2021 395 3 View

How do i analyze scratch assay data obtained thru imageJ?

hello. i manually measured the area in each image. the output i got was area/mean/min/max then i put all the data into excel, and also added the following columns: group names/date/hour pic was...

19 January 2021 3,936 3 View

What is the reason of weight gain in TGA curve of a HDPE polymer sample ?

HDPE samples were aged at higher temperatures in the presence of water and CO2 than the TGA test was performed in Nitrogen? Weight gain is seen in the curve? What could be the possible reason for...

16 January 2021 5,644 2 View

What are the alternative to Rotary Evaporation?

I want to remove solvent to obtain a solid . i would like to remove solvents such as THF, TEA, carbon tetrachloride . the obtained solid which is a Phosphorus ester. What could be an suitable...

04 January 2021 1,220 1 View

What suitable boundary for stream function in inlets & outlets with COMSOL code?

As it has known the Dirichlet boundary condition is suitable for no-slip wall boundary for the stream function in COMSOL. I need to ask if I have an inlet and outlet I need to look for another...

02 January 2021 6,255 4 View

ENVI error when opening Metadata?

ENVI software (V 5.3) has a problem with opening some Metadata files. An error appears which means it does not seem to be a Metadata file. How can I solve this problem?

20 December 2020 4,590 3 View

How to detect saturated pixels in Landsat images?

I have heard pixels with DN>10000 in Sentinel-2 images are saturated pixels. How to detect saturated pixels by DN in Landsat images? Is there any reference that has determined these DN numbers for...

16 December 2020 5,827 3 View

How to modify an article's "field of expertise" or "subspecialty"?

Greetings; I've recently published a preprint for a COVID treatment RCT, which appeared under "Dental" specialty instead of "Infectious diseases (ID)". This is an issue as it doesn't appear under...

14 December 2020 6,614 4 View

What is the role of Phytomelanin in seed coat?

We know commonly found in seed coat at Asparagales and Asteraceae family But, what is the role of Phytomelanin in the seed coat? Is it only a protector?

03 December 2020 7,493 5 View

Hello, What kind of statistical Analysis test can be used for the survey questions with four different options?

I have conducted a survey which includes two groups (1-Normal people, 2-Deaf and Dumb), and the questionnaire had a category of questions with 4 different options and to answer only tick one. I...

01 December 2020 1,147 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

How to consider effects of rapid warm adaptation in modeling of ecological impacts of warming?

I would highly appreciate it if my fellow ecologists (biologists) provide their opinion on the thoughts below [esp., shortly tell us which path may be more effective, if they know another way, if...

15 February 2021 3,642 6 View

Matrix based scientific data analysis: extrapolating to matrices of sets?

Data sets, when structured, can be put in vector form (v(1)...v(n)), adding time dependency it's v(i, t) for i=1...n and t=1...T. Then we have a matrix of terms v(i, j)... Matrices are important,...

30 January 2021 9,295 6 View

How did the tests or exams get to Latin America, specifically the written tests?

I am looking for some bibliographic references that explain how tests or exams (measurement and assessment in education) came to Latin America, specifically written tests. I would like to know if...

13 January 2021 8,607 0 View

How long person is protected from covid 19 after vaccination ?

Immunity from covid 19 after vaccination

28 December 2020 5,960 23 View

Is it indispensable to receive a vaccine by the COVID-19 recovered person?

22 December 2020 5,883 5 View

How to extract the different components at a specific frequency between two spectra?

Dear everyone: Hello! Sorry that my question may take up your valuable time. Recently I have a technical problem in the data processing. We have conducted a series of wind tunnel tests in order...

18 December 2020 8,847 2 View

How to select number of features selected from DWT decomposition ?

Dear community , currently working on emotions recognition , as a first step I'm trying to extract features , I was checking some recources , I found that they used the SEED dataset , it contains...

13 December 2020 9,364 6 View

Ansys mechanical: How to restart with /prep7 commands?

Hello, Currently I am working on a problem that considers both NLADAPTIVE and element deletion command snippets in Mechanical. Unfortunately NLADAPTIVE does not support EKILL commands for element...

05 November 2020 7,836 2 View