Compared to carbon microfibres the carbon nanotubes have superior mechanical properties. Why no initiatives are documented with kevlar and zylon ?

What are the technical difficulties involved in the synthesis and use of kevlar and zylon nano tubes and fibres ?

09 October 2019 2,737 3 View

Any inputs on 3 D printing of human spare parts ? What are the bio compatibility issues with additive manufacturing ?

Any inputs on 3 D printing of human spare parts ? What are the bio compatibility issues with additive manufacturing ? What are the possibilities of growing tendons, tissues,ligaments and cells on...

07 August 2017 585 0 View

Has demonetization led to economic downturn in India leading to devaluation of the indian currency?

Has demonetization led to economic downturn in India further leading to devaluation of the indian currency against a more guarded american dollar ?l

10 November 2016 1,887 1 View

Though the potential of processing nanosteel and nanocastiron for novel applications is immense, the realizations are meager. Why?

Though the potential of processing nano-steel and nano-castiron for novel applications is immense, the realizations are meager. Why? Carbon's polymorphic and allotropic forms can be best used in...

08 September 2016 1,354 3 View

I want to know whether any light foam is superior to PMI ( Rohacell) in thermomechanical properties ?

I want to know whether any light foam is superior to PMI ( Rohacell) in thermomechanical properties ?

08 September 2016 1,984 1 View

Why is it that some nano materials and alloys exhibit inverse Hall-Petch effect?

Why is it that some nano materials and alloys exhibit inverse Hall-Petch effect? It is true that some nano scale materials exhibit inverse Hall-Petch effect, i.e, decreasing grain size doesn't...

08 September 2016 6,568 3 View

How good are the carbon and graphitic foams for structural applications ?

Any comparisons with the other foams in mechanical properties and thermal properties ? Do they come in coated forms and who are the suppliers in India ?

08 September 2016 5,105 2 View

Why is it that woolly mammoths disappeared near Kashmir more recently than any other part of the globe, if so ?

It is said that just near and above Kashmir some woolly mammoth skeletons were unearthed. They were said to be alive as late as 10,000-15,000 BP. But their extinction elsewhere was much earlier,...

07 August 2016 9,740 1 View

Why is it that friction is simply a quantity with out a direction vector ?

We measure coefficient of friction as the lateral force divided by normal force when two bodies slide against each other. But sliding is directional. Why not define it with respect to the...

07 August 2016 5,305 4 View

Now that we have an Article Influence Score (AIS) to rate ourselves, can it be used as a career measure?

06 July 2016 7,838 1 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

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

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

How to prevent ANFIS Model from negative prediction values in MATLAB?

I have input and output data set for "ANFIS modeling in MATLAB", and I am getting some negative predicted values of output in testing. However, the predicted values of output in training are...

28 February 2021 3,459 3 View

What is the difference between genotype and haplotype data in the ped format?

Hi everybody In the ped format for genotype, alleles of any SNP are represented by two columns (one for each allele, separated by a space). Is a column sufficient for the haplotype to...

27 February 2021 1,965 1 View

Is there an open source free software for text mining and sentiment analysis?

I am looking for a free software for text mining and sentiment analysis for my research on customer review mining (it involves calculating polarity of attributes,opinion oriented information...

25 February 2021 1,920 6 View