How can we accurately weigh the dry particles after freeze dry at the presence of BSA?

Hi all, Recently I saw quite a number of articles using 1-5% BSA to prevent nanoparticles from aggregation during freeze dry. Yet, I didn't figure out how they get rid of the BSA after that....

02 March 2019 7,731 4 View

Why mesoporous carbon is so different from mesoporous silica in catalysis?

Hi all, It has been bothering me quite some time and I would like to ask why mesoporous carbon can be used as catalysts while mesoporous silica can only be used as catalyst support? Anyone can...

11 December 2018 2,251 17 View

How shall I prepare the Trypan Blue solution from the powder?

Hi everyone, I just checked sigma website and found Trypan Blue powder got two different versions: 40% and 60% in terms of dye content. When I googled, usually what people say is we just need to...

02 March 2018 6,674 2 View

Can I use PCR to determine the gene expression across various cell lines?

Hi all, I currently have a puzzle when seeking to use PCR to compare some genes expression across different cell lines. I usually work within one single cell line. But I think the logic is okay...

02 March 2018 793 12 View

Any novel pathway in which cancer cells can be killed by drugs without directly taking up the drug?

Hello folks! I guess my question might not be quite clear. I am seeking some rare mechanisms that could allow cancer therapeutics take effect outside of the cells. For example, (Maybe) breaking...

10 November 2017 905 11 View

Can PI staining be washed after staining process and before flurorescence microscopy?

I checked many of the PI supplier companies, they all recommend not to wash after PI staining. But the reason is unstated. I am really curious to know what is the consequence of washing. By right,...

07 August 2017 5,676 2 View

What is the best software for drawing the schematics for illustrating the material or proposed mechanism

Hi folks, I am seeking a software (free of charge) that can draw a nice schematics for material illustration. something like I put in the attachment. just don't want to waste so much time...

05 June 2017 9,699 5 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

I need to image mesoporous silica nanoparticles that are in ~100 nm size and do high resolution TEM to look at mesopores. what grids should I use?

Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru

02 March 2021 1,787 2 View

What analysis to choose with a large neste dataset and clearly skewed or kurtotic distributions?

Hello! I have a dataset of n=3000 nested within 8 countries with approximately 200 or 400 responses in each country. I originally planned to perform multilevel modelling with 4 dependent variables...

02 March 2021 6,865 1 View

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 View