How to calculate the sample concentration with different dilution factor from standard curve?

A silly question!!! Pardon please. Usually a standard curve follows serial dilution with at least four points (especially in 5 point curve) in eight and I assume it reach to 10,000 dilution from...

21 December 2020 9,994 2 View

Where is Fluent 2020R2 "normalization" option?

I can't find the Fluent 2020R2 "normalization" option. Pic 1 (screenshot) is from a guide that a Professor sent me.

13 September 2020 5,620 1 View

How to get Ansys CFX to converge?

I have a problem with Ansys CFX. My runs aren't converging. I have attached a screenshot of a previous run. Any ideas on how to resolve this?

29 August 2020 3,387 14 View

How to destroy plant roots to become powder without damaging the polymer (solid sample preparation for FTIR)?

please give me advice. I want to trace polymer molecules in plant roots using FTIR. what is the correct method for turning my root sample into powder (solid sample) without damaging the polymer? I...

11 November 2019 9,006 4 View

How do I allow my essential oils to be miscible with my cell culture (SH-SY5Y) besides using DMSO?

I am working on the potential of essential oils on an Alzheimer's disease model using neuroblastoma cells SH-SY5Y. How do I dissolve my essential oils into the culture so it would not form a...

27 July 2018 351 1 View

Do you have questionnaire for diversity within groups, innovation, knowledge sharing?

I am searching the questionnaire for the diversity within groups, innovation, and knowledge sharing. If anyone could share me, it will be a big help for my PhD paper for degree requirement. Thanks...

25 April 2018 470 6 View

How can I prepare media containing alpha naphthol?

I would like to screen laccase producing fungi and I will use alpha naphthol. Please share me how can I prepare media that contain alpha naphthol as it is not soluble in water.

13 August 2016 6,528 1 View

Why discrepancy between the results of deviance and pearson goodness of fit test in logistic regression?

I run a binary logistic model and had a results showing significant in deviance and non-significant in Pearson GOF test. I also tried HL stat and showed non-significant. How do I decide on that...

31 March 2016 9,860 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

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

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

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View