Sample Size in Count analysis ?

Hello everybody and thank you in advance. I would like to ask you about a power analysis problem starting from an example. I have two medical devices (A and B) that finds lymphnodes. My...

01 November 2020 4,306 11 View

How to perform XRD Analysis of Catalysts supported on Carbon Gas Diffusion Layer?

Hello, I'd like to analyze a copper catalyst dispersed on a carbon GDL. The thickness of the sample is about 200-250 microns. Does anyone developed a method for analyzing this kind of samples....

12 June 2019 1,657 3 View

What kind of software can I use for reading NXS files from a Synchrotron facility?

I have a collection of *.NXS files got from the Diamond Light Source and I need to open and see the plots of the contained data. Can anyone advice an easy to use reader software for MS...

01 August 2018 790 1 View

Good books for beginners in Electrocatalysis?

Hi I was looking for good books in electrocatalysis for students. Do you know some good books starting from the very basics, reporting also good worked examples and possibly exercises?

28 January 2018 395 3 View

Under the same hypothesis, why Bernoulli's equations for incompressible and compressible flows give different results?

Assuming flow is:-Uncompressible-at constant H-irrotational-steady,why do the classical Bernoulli equation for uncompressible flows and the one for compressible flows give different results for...

18 April 2017 6,376 6 View

Activity coefficient Calculation in Aspen Hysys, is it Possible to retrive this parameter for a solution?

Hi, I was curious about the possibility of retrieving the "activity coefficient" of solute in a solution by using methods like UNIFAC or NRTL. In Aspen Plus it is possible to retrieve these...

10 October 2016 1,619 5 View

Does anyone know the formula or syntax for SPSS to convert BMI to zBMI (BMI-for age-growth for ages 4-18?

I am working with 2 cycles of NHANES just before they provided the percents and their correspondence to BMI categories - under, normal, over, obese....for children. I have age (yrs. or months) ht....

08 May 2015 1,200 30 View

How can I determine the tortuosity factor in a porous membrane?

I use AAS membrane with the a porosity of the finer layer of 70nm as a contactor.

27 February 2014 9,804 11 View

In which way can I graphically show more groups in ranked distributions?

I thought bar graphs with different colors for each group, but Excel nor STATA include this option.

12 November 2013 3,474 6 View

What questionnaire are you using and is this research a pilot or funded?

Is this a qualitative study? What type of questions are you asking? Do you collect any sociodemographics and record estimated BMI categories? How do you approach the adolescents without making...

01 January 1970 7,233 1 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

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

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View