How to validate regridding results of environemental data to higher spatial resolution in R?

I am working with several continous, environmental marine datasets at varying original spatial resolutions. My aim is to regrid each dataset to one common, high resolution grid. I am currently...

22 February 2021 2,290 2 View

How to Reinstall Operating System for a TA Instruments 2910 DSC?

Hard drive crashed on an old windows 2000 that was used to control a TA Instruments 2910 DSC. Installed new hard drive and I am trying to figure out where I can find the software/operating system...

17 November 2020 2,467 3 View

How to do a Repeated measures analysis with not normal distributed data?

I have results from a listening test in 12 sound environments which are build up out of 3 room properties and 4 occupancy rates. Since the sound samples were often intelligible, subject scores...

04 November 2020 5,423 11 View

Can I use my DNA after the tube was "sterilized" by UV light?

I left tubes with isolated DNA drying (before resuspension) in a biosafety hood for too long and a colleague came and turned on the UV light for some 20-30min. The light did not shine on the DNA...

29 September 2020 536 3 View

How could I avoid mutations upon transforming my gRNAs into the lentiCRISPRv2 vector?

After I have cloned my gRNAs into the lentiCRISPRv2 vector and sent the construct for sequencing, I have noticed that a single mismatch between my clone and original sequence has been introduced....

11 September 2020 4,066 1 View

DNA extraction of swabs stored in ethanol?

Hi all, I am using buccal swabs of seals as a sample source for microsats and mitochondrial sequencing. There is a few samples that were shipped stored in ethanol. , i.e. swab of the buccal area...

08 September 2020 1,013 1 View

How do I interprete the results of a moderation analysis with a categorical and a continuous variable?

Hi all, I have a question concerning a moderation analysis within an experimental setting. The independent variable is categorical and has two options. The moderator is a continuous variable. I...

06 January 2020 9,511 1 View

How to run a binary logistic regression with two experimental treatments?

Hi all, is it possible to run a binary logistic regression within an experiment? That means that the two experimental treatments (treatment 1 vs. control) predict a categorical variable...

03 December 2019 7,319 9 View

What method should I use to freeze the human kidney tissue samples?

Thehuman kidney tissue samples will be used later for immunohistochemistry, ELISA, gene analysis, etc. Should I freeze it in solution or not?

20 June 2019 3,052 3 View

How do THP-1 cells normally look like after PMA treatment?

We just started to culture THP-1 cells and treat them with PMA (100nM) for 72 h. Afterwards we change the media daily as recommended. Does anyone have experiences with serum-free culture in the...

23 October 2017 4,566 1 View

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02 March 2021 3,060 3 View

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28 February 2021 9,936 2 View

When is it unnecessary to change organisational culture?

As a former management practitioner, I recall a generally accepted view that changing organisational culture is difficult, so you should only attempt it if the organisational change that you are...

27 February 2021 2,595 8 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

What is the best surface to culture cells isolated from a skin biopsy?

Hello, recently I am having some difficulties with maintaining the cell culture of primary cells isolated from a skin biopsy (normal and malignant). The coating of culture plates with Matrigel (a...

26 February 2021 6,151 2 View

Unknown debris sheets observed in cell culture flasks?

Hi, We culture neural progenitor cells in T175 culture flasks coated with PLO-Laminin. We have successfully grown these cells with our protocol for months. Recently, we observed large sheets...

25 February 2021 3,443 4 View

Has anyone experienced changes in growth for cell culture when purchasing media from different companies?

I recently switched the company where we buy our DMEM/F12 and i have noticed a signficant change in growth for my human olfactory neurosphere cell lines

24 February 2021 2,268 3 View

Can cells be reused after using WST 8/ CCK 8 from Sigma Aldrich?

Hi all, Can cells be reused after I have seed them onto 96 well plates and test them with cell counting kit at OD450 (CCK8) at 12 hours, wash them with PBS x3 and add new media and let them...

24 February 2021 5,072 1 View

Advice on growing lactobacillus species in the lab?

Hello everyone, For part of my PhD project, I'm hoping to grow some lactobacillus species in the lab so that I can create standard curves for a qPCR quantification of a faecal sample. However, I...

24 February 2021 3,157 6 View

Recommendations on homogenizers for RNA isolation?

I will be performing RNA isolation with frozen lung biopsy samples and am in the market for a tissue homogenizer. I am wanting a homogenizer that will fit in a 1.5ml tube. I was looking at the...

24 February 2021 3,623 3 View