Can an airplane stay up in the the air without moving forward just like helicopter ?

How the lift and weight cancel each other perfectly for a helicopter to stay it motionless? Because its propeller do generate huge amount of lift due to air pressure plus a blend of air stream...

09 February 2021 3,990 14 View

What is the formula used for the calculation of L10?

Is there any formula, which can be used for the calculation of L10 i.e, peak noise level? Please give your opinion?

14 January 2021 8,408 3 View

What is the relation between lattice parameters and particle size in manganites??

The change in particle size is resulting in change in unit cell lattice paramaters in manganites. Please explain it in terms of crystallography and why is it so.

28 February 2018 1,590 3 View

How can i dissolve Sodium Nitrate in organic solvents??

I am to make a solution of Sodium Nitrate and a polymer which is hydrophobic. I have been trying with ethanol, but in vain. Please suggest me a procedure to make a solution of sodium nitrate.

07 November 2017 4,018 5 View

PH of 0.01N HCl ? any reference for this.

It was required for buffer preparation.

27 June 2017 3,684 3 View

Which is the best solvent system for flavonoid isolation in TLC method ?

14 May 2017 3,450 4 View

1000g vcf file mapping against bed file?

Hi all, basically this is a bioinformatics query, I have a 1000genome phase3 vcf file and a clinical bed file, i need to map the bed file against my vcf file to find only CNVs, but not indels, for...

13 October 2016 7,924 2 View

How can I remove chlorophyll from ethyl acetate plant extract ?

13 September 2016 4,655 8 View

Whether sex ratio affects fertility and hatchability in japanese quails? under what mechanism of action sex ratio affects these parameters?

sex ratio, fertility, hatchability, Japanese quails

17 August 2016 149 3 View

How to improve color and odor of polyethylene glycol adipate ?

During drying of polyethyle glycol adipate, odor goes to intense and color becomes dark. Any possible expalanation or solution to this problem.

14 March 2016 4,395 2 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

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View