In my LLDPE-ZnO composite at 15 wt% ZnO the Youngs modulus increased but storage modulus decreased. I can't understand why ?

I am using LLDPE as polymer and ZnO (40 micron diameter) powder as filler.Upon doing tensile testing I found that the Young's Modulus decreased till 3 wt% and then increased till 15% and then...

08 September 2017 2,779 3 View

Does using Hydroxyapatite as a composite in polymeric heart valve, increase the chance for calcification?

For Example, making HA-LLDPE composite polymeric heart valve, Will the chances for calcification increase?

07 August 2016 8,330 3 View

Does single leaflet mechanical heart valve have any advantage over bileaflet mechanical heart valve?

For example TTK chitra valve still uses single leaflet valve, whereas SJM uses bi-leaflet.But could not find the advantages of mono-leaflet over bi-leaflet?

04 May 2016 917 3 View

Why should a drug be coated with a polymer for its delivery?What is so novel about it?

I mean why can't we just take it just like that?What are the advantages of coating it with a polymer?

08 September 2015 6,564 0 View

Why are my polymer films very sticky and very brittle after drying?

Polymer is Poly-2-ethyl-2-Oxazoline.I have added both PVA and PEG to it,still its sticky at room temperature humidity. If I dry it in a desiccator, it turns very brittle. How do I overcome this...

31 December 2014 3,572 11 View

In the case of pH sensitive hydrogels that are used for drug release,how can I make sure that the drug releases at a particular pH?

For example, pH of stomach is around 3, so how can I make sure that the drug doesn't get released at a pH 4? How can I make sure exactly that it gets released at a particular said pH, and not...

31 December 2014 9,955 3 View

Can anyone suggest a method for making polymer films?

I am trying to make Poly-2-ethyl 2 Oxazoline films, but films become very brittle after drying. I am making it by solution casting at room temperature.

10 November 2014 3,513 8 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

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

What is your perception on using visual analysis or quantitative approaches to evaluate data from single-case research designs (n of 1 trials)?

Results of single-case research designs (i.e., n-of-1 trials) are often evaluated by visually inspecting the time-series graph and computing quantitative indices. A question our research team is...

03 March 2021 687 1 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