Cloudy or "milky" surface of soft (Ag, Al, etc) single crystals. How to avoid?

Hi all, sorry for double-posting, but the "discussion topic" doesn't seem to get enough attention. We have recently started to work with Al single crystals for surface science experiments....

30 July 2020 2,603 3 View

Abaqus high stresses?

Hello , Recently I received a strange effect: stresses in the outcome are higher, then those specified by Plastic material performance, i.e. there was specified 180MPa, while in the odb frame I...

02 July 2020 4,118 4 View

Humic acids degradation by microorganisms?

Is there any new info on microbial degradation of humic acids in or out of soil?

07 March 2018 1,087 2 View

Inflamation by dead cells?

If dead cells of microorganisms forming a biofilm on a stent, accumulate due to actions of antimicrobials, could they provoke inflamation?

27 February 2018 8,671 3 View

How to immobilize lactic acid producing bacteria on the surface of medical devices?

Do you know some cheap hydrogel to cover the surface of medical devices?

25 February 2018 8,916 2 View

How to make small FOV collimator?

I have a sensor and I want to make really small FOV, like 0.1 degree.So, I use lens, which focus light into pinhole. So FOV is Tan(D/f)^-1, where D is pinhole size, f is focal length. It means, If...

18 September 2017 3,889 3 View

Is it possible to predict UV-VIS absorption spectra of polyconjugated polymers?

Hi, and thanks for taking a look. There are well-known Woodward-Fieser rules that allow predicting the absorption peak locations in diene compounds that may have unsaturated substituents attached...

07 June 2017 9,188 2 View

Has anyone else experienced this problem with Omicron (Focus) EFM 3/4 evaporator?

I would like to deposit iron from the commercial e-beam evaporator, in UHV, but I can get no emission current, fhile flux monitor shows negative flux in the range of nA. I would guess, this is the...

06 March 2014 5,862 9 View

Can somebody help me find reasonably simple software for calculations of magnetic exchange between paramagnetic metallic centers in complexes?

I am new to this area and we are having more and more of these kind of compounds. Any help will be highly appreciated.

27 November 2013 1,901 2 View

What do you think are the most effective measures to suport the economic activity in the COVID-19 environment?

What is your opinion about the effectiveness and efficiency of economic measures taken in the times of that specific crisis? Why do you think measures taken in your country gave a positive (or...

01 January 1970 4,149 21 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

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

Which is suitable for use with Python? MySQL or SQL Server?

Which is suitable for use with Python? MySQL or SQL Server? What is your suggestion?

01 March 2021 3,422 3 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View