How to evaluate motivation in scholars, teachers and students who work from home during pandemic?

Dear all, What tool can be used to measure motivation in scholars, teachers and students who are in home isolation or work remotely? Any specific tool suitable for all people involved in Academia...

08 December 2020 7,968 10 View

How to replace the liquid blocker?

Dear colleagues, In my immunofluorescence stainigs I use liquid blocker pen, before solution with 0.3% Triton X-100. This helps to avoid dripping of solutions with primary antibodies and Triton...

30 September 2020 9,134 4 View

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06 July 2020 4,133 2 View

How long can one store primers?

Dear colleagues, one year ago we put our liquid primers in a high concentration into a -80 fridge. Can we still use them for the qPCR?

11 May 2020 4,521 16 View

What is an acceptable small sample size to carry out principal component analysis for a rating scale with 16 items???

Hi Can someone tell me what would be an acceptable sample size for principal component analysis for a rating scale with 16 items. Thanks!

30 March 2020 9,756 3 View

How to insert image in introductory text of survey in Opinio?

Hi I need some technical help. I am trying to insert an image in the introduction of a survey in Opinio. I click on 'insert image' button, then I am prompted to paste the url of the desired image,...

28 March 2020 1,543 3 View

How does the Excel work with GRG algorithm?

I'm struggling with my qualification work. Excel methods solve the math problem easy, but I don't catch the idea how he does it. I need to understand it to create the code or just to describe the...

12 March 2020 6,567 6 View

What to do if Fatal error: Atomtype LC3 not found and force field is fine?

When I was simulating my protein, "Fatal error: Atomtype LC3 not found" had occured. I checked my force field atom type and it contains LC3 with correct parameters. Before this error I used...

10 March 2020 2,189 2 View

Has anyone optimized ViromerRED in THP-1, H9, and MCF7 cell lines?

I am currently attempting to optimize ViromerRED transfection in THP-1, H9, and MCF7 cells. Our initial transfections with the first batch was promising, but the new viromer we received doesn't...

15 October 2019 5,053 4 View

Can anybody explain why does the line on gel disappear after 15 cycles of PCR?

We make test PCR to choose optimal quantity of cycles and amount of cDNA for amplification, and there are lines on 9 cycles and 12 cycles (same sample), but the line on 15 cycles disappear (also...

02 April 2019 3,158 7 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

Why might my GFP tag be dissociating from my plasmid after transfection?

I have a set of stably transfected cell lines all transfected with plasmids containing GFP tags on the C terminus. During a western blot using anti-GFP antibody, one of my plasmids has dissociated...

01 March 2021 9,310 4 View

Precipitate after adding laemmli buffer to protein solution containing Potassium Acetate?

Hi, I am running a size exclusion chromatography experiment with a buffer containing Potassium Acetate as a salt. I analyse these fractions through SDS-PAGE. After boiling my SEC fractions in...

01 March 2021 2,622 3 View

What are the most relevant MSc proposal topics for Petroleum Production Engineering at the moment?

I am a Petroleum Production Engg MSc student at Robert Gordon University in Aberdeen and I am in the process of selecting a topic for my MSc Engineering Investigation proposal. I would very much...

01 March 2021 7,396 4 View

What is the most suitable server for predicting protein structures in bacteria?

I have used the i-Tasser several times, however it has been unavailable for several days. I tried the swiss-model, but the output was not very pleasant due to the model used. Is there any other...

28 February 2021 4,521 3 View

Do you need the CMV enhancer before the CMV promotor for a proper function of CMV on the gene that follows?

I'm a student and I have to produce a cell line with a knockin for the NRF2 gene with GFP. I have to put a promotor in front of the GFP because the gene will be too far away from the promotor of...

28 February 2021 7,127 2 View

Are protein samples in SDS compatible with ELISA?

I have used an AllPrep DNA/RNA/Protein Mini Kit QIAGEN kit to extract RNA and protein from my samples. At the end of the protein purification, I resuspend my protein in 5% SDS. Will these samples...

28 February 2021 7,370 3 View

What is the exact mechanism of the antimicrobial effect of local anesthetics?

The antimicrobial effect of local anesthetics has been known for more than 50 years, but it still seems to have an unclear mechanism of action. which bacteria? which concentration? etc etc. ....

27 February 2021 4,450 2 View

I want to performe MALDI-TOF MS for bacterial identification, I would appreciate it if anyone can tell me the matrix solution preparation protocol ?

based on what I've studied on multiple papers, for peptide and protein identification Alpha-cyano-4-hydroxycinnamic acid (CHCA) is an appropriate matrix to use, I also know that the CHCA powder...

26 February 2021 6,799 3 View

Does RNAiMAX transfection reagent work in serum free medium?

I diluted siRNA and RNAiMAX in opti-MEM and added to the cells which they were in the growth medium. Is it a right way? or should I culture cells in the opti-MEM medium for a while and not in...

26 February 2021 10,041 3 View