Calculate pH after addition of base?

04 February 2021 2,232 4 View

Western blot with very acidic proteins, any suggestions?

I am trying to do a Western Blot to detect acidic proteins (~30kDa) that have a PI of ~3.5, due to the presence of Asp and Glu repeats. The proteins are about 80% pure. After I ran them on...

24 January 2021 7,226 3 View

How does one create IFORM contours?

Hello: Can anyone assist with plotting IFORM contours. I have been trying to plot contours using Hs and Tp as variables. The marginal distribution is a GPD-Kernel density and the conditional...

12 December 2020 4,355 3 View

How can I transfer heat between groups in Gromacs?

Is it possible to transfer heat from one group to another using simulated aneeling technique in the Gromacs software? I would like to transfer heat from a gold nanoparticle (group 1 from 310 to...

20 November 2020 9,062 3 View

Would ER NiCrMo-3 be the best option for weld overlay of carbon and low alloy steels?

Alloy 625 is the most popular alloy for weld overlay. Without considering the price factor, would NiCrMo-3 be the best technical option for weld overlay of API 5L and low alloy steels, in general,...

24 August 2020 2,478 4 View

Dose-response on non-Michaelian response enzymes, how?

Hello For typical dose-response assays, our lab usually uses steady state intervals for defining the difference between control and tested compound. For those assays, we typically use the angular...

23 July 2020 8,662 2 View

What is the best way to graph an SVM classification in R or Python?

I'm trying to find a way to graph a classification made by the support vector machine algorithm. Something like a PCA or LDA chart would be excellent. Any help will be welcome.

26 April 2020 4,588 1 View

Gene therapy with transgenics viruses Covid-19?

Viral load and symptomatic picture Is there any relationship between the viral load of exposure and contamination, in number of viruses and contamination processes, and the symptomatic picture in...

08 April 2020 6,349 2 View

Is it allowed to publish part of a journal paper(under review) as a conference paper?

Is it allowed to publish part of a journal paper under review as a conference paper? I have submitted a full research paper to a journal. I'm waiting for the review answer and I want to submit...

01 April 2020 430 6 View

Do KG-1a human macrophages need to be activated in some way?

Hello everyone. I was wondering if you can help me clarify this question. I am seeking to perform infection assays with bacteria, using this human cell line. Research articles regarding infection...

24 March 2020 9,884 3 View

No title

02 March 2021 3,060 3 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

No title

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