Does anybody know a company specialized in platinum machining?

Good day! Does anybody know a company providing on-demand platinum machining service? Thank you in advance for your help! Kind regards, Reda

01 February 2019 2,139 3 View

How do empty d-orbital cations affect the non linear optical properties of SiO2-based glasses?

It has been confirmed early in the nineties that adding oxides of empty d-orbital cations (like TiO2, Nb2O5, WO3...) improves the non-linear optical response (namely third order non linear...

03 April 2016 4,403 2 View

How to determine the crystal structure of nanoparticles (less than 5nm) embedded in a glass network?

Hello!Let's imagine a glass network (silica-based for instance) and some crystalline nanosized (< 5nm) particles are statistically distributed through this network. Indeed, by means of Raman...

02 March 2016 2,055 8 View

Are there any commercial twin-roller quenching devices for laboratory use?

As the question title suggests, could you please let me know if there is a company that fabricates laboratory-scale twin-roller quenching devices? Thank you in advance! Kind regards,

11 December 2014 9,467 1 View

What is the common DTA curve's shape of glasses that require very fast quenching rates?

05 June 2014 1,151 8 View

How does crystalline phase amount in a glass influence the glass' transition peak at DSC curve?

To be more clear, does the glass transition peak differ considerably between a pure glass and a glass with a negligible amount of crystallinity? Glass and crystals having the same chemical...

05 June 2014 1,499 8 View

What is the approximate cooling rate of a furnace once turned off?

As the question's title suggests, what is the approximate cooling rate of a standard laboratory furnace once shut off, i.e. allowed to cool to room temperature.

04 May 2014 5,780 18 View

How do you explain XRD pattern change upon heating?

To be more clear, what are the key elements to explain XRD pattern change when performing a High-temperature XRD? Please see the attached file (High-temperature XRD profiles of K2Te4O9 glass),...

04 May 2014 3,709 27 View

How do you quantify the amount of amorphous material in a crystalline matrix?

I am trying to synthesize a crystalline inorganic compound with a very low tendency of devitrification. A posteriori, XRD patterns reveal the presence of a non-negligible amount of amorphous...

04 May 2014 2,841 15 View

What makes the Raman spectra of bulk glass and its corresponding powder different?

To be more clear, how can you explain that the Raman spectrum of a bulk glass sample features some other variations than that of the powder of the same bulk glass?

03 April 2014 3,875 16 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

How climate change will influences human and animal behavioral change?

The role of climate change influencing the human behavior as well as economics interest

01 June 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 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

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 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

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to upload pdf of my articles published?

How to upload pdf of my articles published?

03 March 2021 2,183 3 View