No module named 'tensorflow.keras.backend.tensorflow_backend' ?

System Description Cuda 11.2 GeForce GTX 1080ti tensorflow version 2.4.1 keras version 2.2.0 python version 3.8 I was getting the below error when I try to run my code on the...

25 February 2021 6,673 2 View

Should I use higher centrifuge speed or my polymerization actually did not work?

One of my sample (NIPs-non-imprinted polymer) couldn't settling down after centrifugation (4000 rpm). Might be due to very fine particles. So what I did, I let the samples to evaporate under fume...

06 December 2020 3,344 3 View

Can anyone help me with MATLAB code for GF URLLC using NOMA?

Please, I need someone to help me with MATLAB code for simulating Grant free Non orthogonal multiple access for Ultra reliable low latency communications.

04 June 2020 2,434 3 View

What can explain the high desorption percentage when the desorbent is NaOH on a material that has adsorbed an anionic dye ?

Good morning to all of you Please, I need some help, After the adsorption of an anionic dye by an activated carbon at acidic pH, I studied the desorption phenomenon using NaOH, H2O and H2SO4 as...

18 April 2020 2,592 5 View

How does the current flow in the tunnel junction of dual-junction solar cells?

The dual-junction solar cell composed of two sub-cells would achieve a better conversion efficiencies, but how does the current flow in the tunnel junction P++/n++ withou current loss?

12 April 2020 3,573 6 View

What's the best way to connect two solar cells in series?

We can connect CIGS/Pyrovskyte solar cells with several ways to form tandem solar cell. But what's the best one of them? . thank you.

08 April 2020 7,662 3 View

What's the best way to reduce the carrier recombination at the back contact of solar cells?

P-type absorber material, an n-type material is mandatory for creating a good p-n junction. The heterojunction Absorber/Buffer cell requires a transparent conducting oxide (TCO) layer at the front...

05 April 2020 7,047 4 View

How can help me about the real parameters for Perovskite thin film?

I would like to simulate a typical perovskite solar cell. I have found a lot of references for perovskite parameter values in literature. Does anyone have any reference so that I can get values...

02 April 2020 1,777 6 View

Can you tell me about the characterization methods to determine defects levels in the gap energy?

It's very important to determine the defects levels that impact on the solar cell performances, especially in the absorber part. We would like to know also the origin of this defects and their...

21 March 2020 4,938 7 View

How can I model & simulate quantum dote thin films using CASTEP with different tail parameters?

A QDSC solar cell design that uses quantum dots as the absorbing photovoltaic material. It attempts to replace bulk materials such as Si, CIGS, CdTe ... etc. Quantum dots have bandgaps that are...

16 March 2020 1,986 4 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

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 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

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 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

Which is suitable for use with Python? MySQL or SQL Server?

Which is suitable for use with Python? MySQL or SQL Server? What is your suggestion?

01 March 2021 3,422 3 View