How to model in HFSS or FEKO Free Space Material Characterization?

I am having trouble setting up this problem in HFSS or FEKO. In HFSS, I've tried both FEM and FEBI-IE solvers. With FEKO, I've tried it's MoM solver and default settings. I am would like model...

09 February 2021 375 2 View

Statistical Test for Single Group over Multiple Conditions & Different Time Lengths?

I have a dataset with an unusual configuration and was hoping for guidance on choosing a method to test for changes in mean. For context, this is operational data tracking vehicle arrivals at 10...

20 January 2021 4,429 4 View

How long does MQAE solution last once prepared?

I am wanting to prepare a small quantity of MQAE solution. Once prepared, how soon should it be used? How fast will it degrade? Is there a way I can store a leftover amount for future use? Are...

20 December 2020 1,416 3 View

Why do many stock buffers ask you to adjust pH and then add more water?

Could someone please explain why many stock buffers ask you to adjust the solution's pH and subsequently increase the volume to a set amount? For example: Add 500g of powder X to 800mL of...

09 December 2020 1,882 3 View

How to estimate sample size when you think the effect size will be reduced (compared to previous studies)?

Hi, I am planning a follow-up experiment to a previous study and have a question about estimating sample size: For the sake of simplicity, the previous study showed that Condition 1 had more...

19 November 2020 7,948 6 View

What is angular velocity of projection of uniform circular motion?

12 November 2020 481 5 View

Peptide solubility in DMF (n,n-dimethylforamamide)?

I am looking to dissolve a suite of "acidic" peptides for, ultimately, a validated LCMS assay. Using DMF as an initial solvent (20% of final volume) but some peptides precipitate when aqueous is...

15 October 2020 9,171 1 View

How do crush foraminifera for d18O analysis?

I am looking to combine and crush 5 foraminifera to create a homogeneous carbonate powder that I will then be sending out for oxygen analysis. Does anyone have any good methods to make these...

14 October 2020 8,128 7 View

Troubleshooting co-IP from a small amount of brain tissue?

I am looking to perform a co-IP; however, I am using a very small amount of tissue to begin with from region specific microdissection in mice (2-3 300um sections per animal). I am concerned that...

07 October 2020 8,937 3 View

Can Stimulus Packages safeguard businesses during the Covid-19 Pandemic?

Research Proposals

02 October 2020 6,404 9 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

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

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 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

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View