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

What are possible factors influencing the isotope-based hydrograph separation in river confluences?

When performing hydrograph separation (EMMA method) with isotope tracers in river confluences (natural large basin), we found that the contribution of each end member sometimes exceeds the...

20 January 2021 8,403 5 View

How to know if 87Sr/86Sr is reliable for Sr isotope chemostratigraphy in marbles?

I am currently looking for parameters to know if 87Sr/86Sr data is reliable for chemostratigrahy in marbles, and/or parameters to know if those marbles have had some post-depositional...

30 November 2020 9,032 8 View

Which isotopes can be used for preserving agricultural products?

Different kinds of Isotopes are playing very important roles in agriculture. They are used to detect different nutrient elements in soil and other crop improvement program. But which isotopes and...

16 November 2020 9,248 7 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

Dear fellows, what models are there available for water stable isotopes in the vadose zone?

I'm aware of Hydrus and Netpath, but are there others? I am highly interested in water stable isotopes in variably saturated and non-equilibrium flow (double porosity/permeability). Any hints...

21 October 2020 9,395 2 View

One step RT-PCR enzyme optimisation, can anyone help?

Helping others is the way we help help ourselves! In this case literally!! I work at a biotech company called Genaxxon Bioscience GmbH in Germany. We have an amazing one step RT-PCR enzyme which...

13 July 2020 7,395 2 View

Have you published anything about the Ebrahimi meteorite? If so can you comment on anything pertaining to the isotopes of oxygen seen?

Did you see any evidence of D-ribose or other organic chemistry?

14 June 2020 9,565 8 View

What program/software can I use to search/mine a high resolution full scan mass spectrum (QTOF) for halogen isotope patterns?

For Bromine, the program would be able to go though each of the m/z's in the full scan, add 1.99795 (difference in mass between 79Br and 81Br) to that m/z, determine the intensity ratio between of...

16 May 2020 7,373 2 View

Does anyone has good references to "Organic x Inorganic CO2 in the atmosphere"? Volcanos x Burning fossil fuels?

I need more details and references about: the increase in carbon observed in the atmosphere is the organic origin CO2, not the inorganic origin CO2 released when a volcano erupts. Evaluation of...

19 March 2020 948 3 View

Suitable Software for the Interpretation of isotopic data?

I am currently working on the effects of climatic and vegetational change on mammals for past 15 Ma. I want to ask that how the data of oxygen and carbon stable isotopes can be interpreted in the...

26 January 2020 970 3 View