How do you decide on a PhD research topic?

Now I am working on PhD proposal and I have around 4 topics. I am stuck here for two weeks and don't know how to proceed and decide on one topic. I am thinking about criteria like: job...

16 December 2020 3,198 18 View

What approach or criteria should I use to decide on the age group of my research?

I am doing phd research in educational psychology. It is about developing social emotional learning (sel) competencies for students. I should decide on an age group: school children or university...

13 September 2020 3,240 6 View

My melanoma cell line doesn't grow well suddenly, May i know the possible reasons for that?

I have 92-1 of melanoma cell line , when i thawed them they were totally normal , but after first passage , the cells begun not growing well and not totally attaching on the bottom of the flask...

30 June 2020 3,622 4 View

How to calculate of total phenolic and total flavonoid content?

Dear all colleagues We keep working for long time on antioxidant and bioactive properties of plant extracts however we some time miscalculate the accurate values my question is as follow: We...

30 April 2020 8,760 6 View

How can i calculate the antenna factor in the CST Microwave studio?

I need to use an antenna as sensor , therefor its necessary to estimate the antenna factor = (incident electrical field(Ei))/(received voltage (v)).

28 January 2020 1,335 3 View

Can I have an activated carbon with lower heavy metals removal efficiency than its Raw macroalgae?

Hello dear sir/Madam currently am working on producing activated carbon from red macroalgae by method of acid impregnation/pyrolsis. also am doing batch adsorption for lead Pb+2 amd Cu+2 for...

05 May 2019 6,989 9 View

How can Artificial Neural Networks (ANN) model be used by programming languages known that it is created by MATLAB ?

If ANN model is created using MATLAB 2015a or later. How this model is used in other programming languages e.g. Python, PHP or any. How can I pass parameters if the input of the ANN model is...

24 June 2018 6,710 4 View

What is the relation between pressure difference made by the fan and fan speed (or tip speed)?

Hello I'm trying to make a simulink model for Venturi tube, for the purpose of measuring volumetric airflow by making a pressure difference with a fan. The paper "Model-based analysis and...

13 December 2016 9,768 6 View

Is there a mathematical model that describes knowledge acquired by an individual?

If somebody wants to mathematically model data, information, and knowledge. Data represents a raw material for processing service delivery solutions to produce information. Knowledge acquired by...

01 January 1970 229 4 View

What your opinion about using avifavir for covid-19 treatment.?

Russian hospitals start receiving indigenously made anti-COVID drugs; mass production launched

01 January 1970 9,426 12 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

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