Why are we measuring gel content of NBR latex? Does gel content related to the amount of cross-linked in a polymer?

Hi good day to everyone! I am actually studying the gel content of synthetic latex. Refer to ASTM 3616, gel content is measure of insoluble rubbers in the chosen solvent. So, I just would like to...

07 February 2021 605 4 View

How to determine the number of cells before suspending them in 1x binding buffer in Annexin V FITC assay?

I am performing Annexin V FITC assay for adherent cells. According to the protocol described, the treated cells were trypsinised and collected, followed by washing them twice with cold PBS. The...

18 July 2020 8,695 5 View

Appearance of crossing point signal even in water during qPCR. Help?

We have been running qPCR to detect Fusarium in wheat grains. Suddenly out of nowhere, we kept getting crossing point signal in the blank (PCR water). We have done the following: ran with only...

01 March 2020 1,408 3 View

What are the factors that affect the compatibility between filler and solvent in fabrication of mixed matrix/composite membrane?

I've heard of compatibility between polymer and solvent used to dissolve it based on the solubility parameter. However, little have I found upon solvent and filler interaction and compatibility....

18 August 2019 5,376 1 View

How to perform data analysis for ranking of familiarity of foods?

the most familiar food was assigned to 1 and continue rank among the list of the foods until the least familiar food. How to perform weighted ranking or any suitable method can be suggested for...

21 September 2018 6,557 3 View

Why do my western blots look so odd?

The three images attached here are for 3 different proteins probed at the same time. The first one is GAPDH. Does anyone have any idea why (1) Despite reasonable Bradford assay results, GAPDH...

14 January 2018 5,544 3 View

Choice of electrolyte for characterizing Cu2O/CuO coated on Cu mesh?

I have Cu2O/CuO coated on Cu mesh and would like to characterize its electrochemical properties using CV and Impedance analysis. I have tried using 0.5M and 1M of Na2SO4 (scan rate 10mV and 20mV),...

03 September 2017 4,244 4 View

Peak height in qPCR melt curve analysis?

31 October 2016 1,428 5 View

Why my cells (Flp-in CV-1) precipitate after adding in the antibiotics?

The culture looks fine during maintenance but after transfection, precipitation forms immediately after I adding the antibiotics (hygromycin b) for positive cells selection. So I tested the fresh...

18 August 2016 2,955 3 View

Where do i buy Sybr green dye?

27 June 2016 6,138 3 View

What are some of the research gaps in machine learning and artificial intelligence in africa?

i would to know some of the research gaps in the artificial intelligence field in most african countries.

03 March 2021 6,145 3 View

No title

02 March 2021 3,060 3 View

How does Scientist/RG community evaluates a case study article and the impact of it on a researcher career?

An article that is published as a case study in the SJR listed journal. How much value is added to a researcher career? How it is evaluated by a scientific researcher/University admission...

02 March 2021 9,661 3 View

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View

How to modify Johnson cook equation in ABAQUS?

I wanted to add an extra parameter to the existing Johnson cook equation in the ABAQUS simulation. How to add those extra parameters. Ref: A modified Johnson-Cook material model with strain...

28 February 2021 4,841 3 View

How to find the right number of integration points in second order 3d finite elements?

I am familiar with finite element simulations and numerical schemes like the Gauss Legendre quadrature. I also know that the Gauss integration yields exact values for polynomials up to degree 2n-1...

27 February 2021 6,818 3 View

What could be the reason for not having further low chi square value (better agreement) in my refinement result?

I have tried every combination of parameter changes and after that i have a poor chi square value. I can't get it lower any further. I know there have been a lot of discussion about Rietveld...

26 February 2021 8,480 3 View

Which software is best to analyse multi-phase fluid flows ?

Hello everyone, hope all is good. I want to analyse multi-phase fluid flow through pipe, which software is best to do so ?

21 February 2021 4,230 8 View

Is there any effective FEM solver to perform simulation of balloon inflation with large deformation (e.g. 300% strain)?

Hi! Thank you for your time, attention, and support. I am currently using FEM solver Abaqus to perform a set of balloon inflation simulations, trying to understand the deformation shape, stress,...

14 February 2021 2,524 4 View

Is there a way in which microglia can be extracted from mice without killing them ?

I'm aiming to use an adoptive cell transfer approach, with microglia in mice with ALS. So far all the protocols I have seen, require sacrificing the mouse. I'd like to re-infuse the microglia back...

11 February 2021 9,509 1 View