Vertical air monitoring and relating with meteorological data ?

I have collected vertical air pollutant samples at three different heights close to the road. Meanwhile I observed meteorological data at one particular point i.e. above the building roof during...

31 December 2018 8,023 2 View

Air pollutant accumulated Filter paper preservation?

Usually the filter papers will be desiccated for 24 hr before and after ambient air pollutant sampling. As we encounter some error in weighing balance, we are unable to weigh the exposed air...

09 October 2018 6,253 6 View

HYSPLIT trajectory for 7days?

I am looking for a tutorial or method discussion on simulating back-trajectory for 7 days in HYSPLIT. I have a knowledge in running multiple locations. Looking for experts help.

07 August 2018 4,940 0 View

What is daytime heating?

01 January 1970 2,823 0 View

How a species with high concentration contributes low % of species contribution and vice versa?

Source: EPA PMF User guide A graph for PM2.5 data was shown in practice exercise. Actually higher the conc. in total species will contribute higher %. How actually is the below condition...

01 January 1970 4,419 2 View

How to compare data and show reliability of data?

I have observed PM2.5 and PM10 concentration for a particular site on alternate days for a period of 1 week. I wish to analyse the ratio of pollutants in that specific site. But as the...

01 January 1970 3,684 8 View

What does the grading in whatman filter paper signifies?

I find filter papers with various grades in glass fibre material like GF/A, GF/B, GF/C in whatman make. What does this grading signifies?

01 January 1970 2,922 2 View

How to draw Conditional probability Function (CPF) plot?

On refereeing few literature's, CPF is used to interpret the air pollutant concentration and wind direction to predict the source path to the receptor point. The formula with description contained...

01 January 1970 4,324 2 View

Tutorials for practicing HYSPLIT model?

I am doing my research on vertical atmospheric pollutant modelling near and far coastal area. In this regard to study the vertical wind profile I have decided to use HYSPLIT model. But I couldn't...

01 January 1970 3,242 7 View

Particulate matter - 12hr sampling data ?

As per the Indian and other standards, PM pollutants permissible limits are defined for 24hr and Annually. If the samples are collected for 12hr basis, can we use them for analysis and also will...

01 January 1970 5,647 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

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 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