How can I calculate packing density of particles by fomulas or softwares?

I have all data of particles, such as size distribution, or numbers. Is there any way that I can calculate the packing density of these particles? Assume that all particles are circular.

05 January 2021 4,272 2 View

How to measure telomerase activities in TISSUE?

Can anyone recommend a protocol to measure the telomerase activity in tissue samples? Before I was able to measure telomerase activity in cell populations using a telomerase activity measurement...

25 November 2020 1,509 1 View

Why did the heat flow of DSC in the 2nd cycle decrease without any decomposition or volatilizing of sample?

My sample was the copper paste contained PEG, and there were no endothermic peaks or exothermal peaks, so I was wondering why did the heat flow in the 2nd and the 3rd cycle decrease? Thanks!

31 August 2020 7,169 3 View

Commercially available TCR-mimic antibody?

18 August 2020 9,995 2 View

Which software is used to plot graphs in engineering books?

Hello guys, I encounter such this plot (attached) in the engineering books, but don't know which software the authors used. It is not only about the plot itself because plotting observed X-Y...

17 July 2020 8,036 4 View

DNase specific to plasmid (circular) DNA?

Is there a specific DNase that digest plasmid (circular) DNA and leaving linear blunt-ended DNA intact? For example after doing CRISPR-Cas9 guided digest of a large BAC vector (~100 kb), I want to...

04 March 2020 4,857 3 View

Which software tool implemented the algorithm for maximum common edge (connected) subgraph?

I need to find the maximum common edge (connected) subgraph of two input graphs. I have implemented them in Python as follow: I construct line graphs of two input graphs then identify the maximum...

16 December 2019 8,088 1 View

Lingo problem, how to use the optimization result of the LP model in the calculation section?

Suppose we have a linear programming model in the below: Model: Max = 3*x1+5*x2 x1

02 October 2019 8,061 3 View

How to mesh a tapered plate in ABAQUS CAE?

Hi all, I am new to ABAQUS CAE and is trying to seek help in RG with regard to my research project. I am trying to mesh a marine stabilizing fin (Basically a tapered plate with hinges-solid) and...

11 April 2018 6,753 6 View

Vapor pressure or Antoine coefficients of LiOH and FeSe?

The experiments I'm doing is gas-phase reaction, so that I wonder to know the vapor pressure of LiOH and FeSe. However, I can't find any data or reference on the internet or the handbook that...

02 November 2017 8,323 2 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

Could you recommend any books about Number Theory?

Beginner level books. High level books. Analytical Number Theory. Algebraic Number Theory. Combinatorical Number Theory. Books about partitions. Books about primes.

03 March 2021 7,174 5 View

No title

03 March 2021 5,360 2 View

What SPSS analysis should I run with one IV (with two levels) and two DVs?

Hi, I am trying to figure out which test would be most appropriate to run for the following question: Is there a difference in task blood pressure between smokers and non-smokers? There are two...

01 March 2021 8,235 2 View

Does anyone know an alternative product for cardiac Troponin T antibody for Immunofluorescence (Thermo # MA512960)?

We have been using Thermo Fisher anti-cardiac Troponin T antibody for immunofluorescence staining in FFPE mouse heart sections but it was recently discontinued. The literature shows it to be the...

01 March 2021 4,937 1 View

Sample size determination for non-parametric tests?

How do I run a a priori sample size determination for non-parametric tests, like the Mann-Whitney U-test and the Kruskall-Wallis or other non-parametric tests that accord with the unpaired t-test...

24 February 2021 166 6 View

Does PHA-P stimulate the proliferation of lymphocytes from mice?

Hello, I will start performing MLR using lymphocytes from mice's spleen and I would like to know the better way for the stimulation. If is using PHA-P or CD3/CD28? I would like to know as well if...

23 February 2021 5,476 4 View

Statistical Tests for Quantitative Study?

Hello Everyone, I have one population, sample size 200. and needed to find the correlation between Variable A and B. Also, which T-test should I choose for hypothesis testing Please advise...

21 February 2021 7,591 4 View

Looking for advices and tips to improve the staining and the gating strategy in human blood?

Hi, I am staining a human blood with CD19, CD3,CD14 and CD16. My gating strategy in FlowJo goes like this: - First, I gate a general population SSC-A VS FSC-A => Then gate for single cells, =>...

21 February 2021 5,724 4 View

How T cells recognise non-peptide antigens?

This might sound very basic question, but please share with me an explanation of how the T cell is activated when the antigen is not a peptide? What happens? And what are the molecules involved in...

21 February 2021 564 3 View