How to solve the fatal error "the entire source was rejected" in MCNP?

Simple geometry was made having concentric cylinders bounded by a square region. The geometry has a reflective boundary. The source was defined at one point in the boundary and when it had been...

17 February 2021 4,364 3 View

How i can extract the dose delivered to each pixel of CT image of TPS?

I generated a treatment plane for a patient using intensity modulated radiation therapy (IMRT). I intend to calculate cell survival in each voxel of target volume using LQ model. So, i need to...

03 November 2020 6,132 3 View

Why such a broad exothermic peak is present?

I'm working on electrospun nano fibers using PLA-PEG-PLA triblock polymer. I tried to perform DSC analysis for the characterization of the fiber mat. however there is a large hook at the beginning...

15 January 2020 8,874 4 View

What is the best solution for pH adjustment of HEPES A?

12 June 2019 3,226 8 View

What are the best polynomial approximation functions for analyzing free vibration and impact analysis of plates?

I want to do a free vibration analysis for a plate. In this research, I want to use the Ritz method. For Ritz-shape functions, which are the best polynomial functions that give the most accurate...

10 April 2019 2,612 5 View

Is it wrong to reference a paper like this " [23] showed a innovative approch" ?

I have read some papers who referenced like this " [23] showed an innovative approach" instead of one of the most common way "author X in 2017 showed an innovative approach [23]" . My question...

17 February 2018 3,279 5 View

What are the features of a good battery charger?

What indices can be used to measure the performance of the battery chargers used for EVs?

19 May 2017 2,673 3 View

What is the best cell-line other than HEK-293 for delivering vector containing guide?

Has anyone tried to deliver vector to cells other than HEK-293? What was the efficiency of transfection?

12 November 2016 757 2 View

Anyone familiar with Fly Ash properties in Engineered Cementitious Composites (ECC)?

Hi there I am a PhD student at university of Houston working on Engineered Cementitious Composites (ECC) using PVA fibers. In developing ECCs, fly ash is used and it seems that its chemical...

11 November 2015 8,184 9 View

Grid connected inverter using virtual synchronous machine?

Hi everybody, currently, I am working on the grid-connected inverter. I want to make my grid-connected PV system a PLL-less system. I have studied some reachers are implementing a virtual...

07 February 2021 6,078 2 View

Can't run my IPMSM drive system with DC-supply higher than 125 V. Have anyone had similar problem?

Hey, I try to run my 4 pole IPMSM with PWSVM and use a typical controller with PI-controller with a current loop and speed loop. When I run my system with DC-supply 100 V with a steady-state speed...

28 January 2021 7,354 8 View

I am facing problem with integration of boost converter with single phase offgrid inverter?

i tested boost converter with MPPT and single phase offgrid inverter with close loop control separately. They work fine but when i connect them boost converter doesn't give the output as it did...

17 January 2021 6,428 6 View

"The following block is not supported in Phasor simulation?

I am designing a control system for Hybrid renewable energy systems using Matlab/simulink/simscape, but currently having a problem. Whenever I run the simulation, I get the error shown below. "The...

12 January 2021 2,142 5 View

Why do the Dual Central Inverter one is star connected and the other one is delta connected to the 12-pulse transformers?

It's hard to understand for me. And I need answers really quick. Hope you can help me.

21 December 2020 8,140 2 View

How to calculate the critical clearing time CCT ?

I need to measure the CCT from rotor angle graph >> is it possible ? HOW? it will be highly appreciated, if you advice any method to calculate the CCT

17 December 2020 8,763 2 View

If you have solar PV panels and a grid-tied inverter, what happens if the system is connected to the grid without a net meter?

If you have solar PV panels and a grid-tied inverter, what happens if the system is connected to the grid without a net meter?

13 December 2020 8,874 3 View

Distributed vs centralized photovoltaic system performance ?

Hello everyone, I have two questions and I would like it if you could help me out please. I need to know, in your opinion, what is the most efficient PV panel configuration between a distributed...

09 December 2020 4,606 7 View

Publicly accessible solar photovoltaic generation data?

I would like to ask if there are possible resources to access any freely available datasets of actual power generation from a utility-scale solar photovoltaic power plant on an inverter-wise basis...

29 November 2020 1,743 4 View

MPC for grid connected inverter with LCL filter generates dominant 3rd & 5th order harmonics. solutions to eliminate them?

Hi, I'm trying to design a three phase grid feeding inverter. Haven't used a transformer and grid neutral is grounded. LCL filter is being used. Id* and Iq* are references for grid current. These...

23 November 2020 6,562 3 View