What solvent can I used for Paal Knorr reaction between 6-amino hexanoic acid and 2.5 hexanedione?

I am try to make the Paal Knorr reaction between 2.5 hexnedione and 6-amino hexanoic acid, my problem is type of solvent to use, because 6-hexaminohexanoic acid is soluble in water but I am not...

02 March 2021 4,443 2 View

Measurement invariance of a bifactor model with categorical indicators. What is the recommended approach?

I have a bifactor model with categorical indicators: 4-option Likert-type items. One of my research objectives involves testing measurement invariance between two groups. I have been doing it as...

16 December 2020 4,601 2 View

How to concentrate a PCR product before sequencing?

Hi everybody, I'm planning to sequence several phytoplasma strains by doing a nested PCR and cloning the resulting amplicons. Standard phytoplasma universal primers pairs will be used (P1/P7...

08 November 2020 2,155 4 View

Discrepancy protein levels and receptor expression?

I measured the expression of a protein that is a receptor in a panel of cell lines. When I measured the protein levels by Western blot the protein levels were about the same in all cell lines ,...

09 September 2020 6,671 3 View

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24 July 2020 9,872 3 View

Who decides if a paper is submitted or not?

If one of the coauthors of a research paper does not contribute intellectually but financially only to a project, is he/she entitled to call off the submission of the paper?

10 May 2020 2,851 7 View

Does anyone know home range databases for mammals and birds?

I am conducting a study using wildlife traits, however, home range data is limited. Pd. I have already used data from Tamburello et al. 2015, but I still have lots of species without home range data.

30 April 2020 6,608 2 View

IEEE 34 node test feeder in DigSilent PowerFactory?

18 April 2020 1,949 2 View

Can pressured steam carry small biomolecules?

Apparently there is a belief that contaminated steam in the autoclave can contaminate your pipette tips while sterilizing them with biomolecules such as peptides and DNA, and that this can be a...

05 March 2020 1,439 3 View

Narrowband filter before or after sLoreta transformation?

Hello everyone: I was wondering about narrow band filtering the EEG (ALPHA, BETA, THETA) and doing a source analysis with sLORETA in a particular set of ROIs. Filtering before (EEG electrodes...

24 February 2020 538 5 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 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

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 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

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 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

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 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

How to calculate average trend in maximum annual NDVI from MODIS?

I am wanting to calculate the average trend in maximum annual NDVI in Iceland from 2010-2020 using MODIS MYD13Q1 V6. How would I do this? I have currently inserted the NDVI bands from the MODIS...

02 March 2021 752 2 View