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 the presence of salt affect the water-in-oil Pickering emulsion stability ?

I have prepared the stable water-in-oil Pickering emulsion by using stearic acid-modified CaCO3 nanoparticles. The oil phase is toluene and the dispersed phase is deionized water. I want to use...

21 September 2019 9,938 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

Charmm/GROMACS Residue 'ZN' not found in residue topology database?

I am trying to do some MD simulations of a protein with zinc ions. I am trying to use a charmm forcefield (I have tried 2017 and 2021) and Gromacs. I get an error when doing pdb2gmx Residue 'ZN'...

12 February 2021 9,367 2 View

Which is the best gene editing tool among TALENs, ZFNs, CRISPR and HENs?

Since two decades we came across many tools to edit the desired gene and genome viz., clustered regularly interspaced short palindromic repeats (CRISPR)-CRISPR-associated protein 9 (Cas9), (2)...

27 December 2020 7,667 10 View

Why peaks are shifted in XRD anlysis ?

I have synthesized zinc oxide nanoparticles by physical method (sputtering) direct interaction of plasma with zinc target and it is done in atmosphere. The sample were prepared at different...

18 December 2020 10,010 6 View

How to know if Zinc Oxide is coated on the glass substrates?

Hello all I have prepared Zinc Oxide nanoparticles using sol gel synthesis. I tried to coat the ITO and glass substrates with the ZnO nanoparticles ( dispersed in ethanol). But I am not sure if...

08 December 2020 3,692 8 View

Why band gap energy of cobalt ferrites is increased with increased in zinc(dopinng element) concentration?

In most of cases band gap energy of cobalt ferrites is decreased with increase in Zinc concentration that is hold to brass model. But when energy band gape is increases with increased...

03 December 2020 2,439 3 View

Why does zinc chloride salt powder melt at 50 degrees?

I have a question about zinc chloride salt powder. When I put zinc chloride powder in an oven at a temperature of 50 degrees to dry it (because it may absorb moisture), after about an hour, the...

26 November 2020 3,751 3 View

How should I prepare solutions of divalent metals at neutral pH?

Hello, I would like to prepare metal solutions of 50 mM Mg, Zn, Ca, and Cu (separately) from their chloride salts, to study protein-metal-ion interaction. For this reason, I would prefer that it...

25 November 2020 1,924 11 View

How to create a metal binding curve for a metalloprotein using prism?

hello, I need to create a binding curve to measure the affinity of my enzyme to its zinc cofactor, to determine the Kd value. I'm using prism (graphpad) and there are a lot of options under the...

14 November 2020 2,120 3 View

How could alloys of metal be used to improve the life span of a casein battery?

Batteries have become every household appliance, the Lead-Acid battery being the most common. the set objective is to develop local research tools for getting reliable, longer life battery components.

08 November 2020 2,353 1 View

Which PEIE to use?

Hello all Thanks for answering my previous questions. I am making perovskite LED and intend to use PEIE on zinc oxide layer as ETL. But I am not sure what version of PEIE to us. There is the one...

08 November 2020 5,710 3 View