Solve standard curve equation?

I have a standard curve for an ELISA, and want to find unknown concentrations from absorbances. my polynomial equation is: y= - 1e-06x^2 + 0.0032x + 0.2562 How can I solve this to find analyte...

07 August 2019 3,433 3 View

What is the best method for finding unknown concentrations from optical density?

We have an in house ELISA, how do you calculate unknown concentrations from optical density values? We produced a standard curve but don't know whether to use sigma plot or excel. Also, Which...

07 August 2019 9,881 6 View

By how much is CVD risk reduced for a reduction in TC:HDL ratio?

Does anyone have papers showing statistics of CVD risk reduction with improvements in TC:HDL ratio?

10 November 2018 5,083 1 View

Reduction in fasting Insulin levels and associated CVD/T2D risk?

Does anyone have papers relating fasting insulin levels and associated CVD risks?

10 November 2018 1,898 4 View

What is a clinically relevant reduction in 24-hr Blood Pressure?

Is there a threshold by which 24-hr Blood Pressure needs to be reduced by to be clinically relevant? or is it possible to use the clinic-based blood pressure thresholds? any papers would be...

10 November 2018 9,731 3 View

Statistical difference between correlations?

Which test should be run for determining statistical differences between 2 (r values) correlations (correlated correlations)? I am looking to see if there are any differences between a placebo...

09 October 2018 6,566 5 View

What is the average dropout rate of human RCTs involving dietary supplements?

Any papers would be appreciated.

09 October 2018 2,335 2 View

What are normal serum concentrations of ACE enzyme in humans?

Does anyone have papers showing angiotensin-converting enzyme concentrations in serum in humans, preferably Metabolic Syndrome humans? Thanks

08 September 2018 6,238 3 View

Bland Altman for repeated measures reliability?

Can you use Bland-Altman for more than 2 repeated measures in the same person? I have measured the same dependent variable 5 times in the same person.

06 July 2018 9,472 3 View

Should Partial Eta Squared be used as an effect size?

When conducting a repeated-measures ANOVA between 2 conditions, SPSS outputs report Partial Eta Squared for effect size. Should this be used or is there a better alternative for effect size?

05 June 2018 6,676 3 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

What is the status of bread making and more bakery foods with the use of insect flour/powder?

Insects have been consumed by human diet since prehistoric times. At present, the idea of looking at insects as food has been getting traction worldwide, also in response to increasing food...

03 March 2021 6,223 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

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

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 View

How to calculate Total Flavonoid?

I analyzed flavonoid total spectrophotometry, the procedure as below: 2 ml supernatan added 5 ml dd.H2O, then added 0,15 ml NaNO2 5%, 5 minutes later added 0,15 ml AlCl3 10%, After 6 minutes,...

01 March 2021 6,722 1 View