Why am I getting negative values for antioxidant assay standard curve?

I am trying to get a standard graph for antioxidant activity of ascorbic acid using 0.1 mM DPPH solution. I had used 100 ug/ml stock and serial dilutions were from 1 ug/ml to 10 ug/ml. All of the...

07 August 2020 1,835 3 View

What interpretation can be given for similar values of anodic and cathodic tafel slopes in corrosion studies?

During calculating the corrosion parameters using tafel extrapolation method what does it mean if the values of anodic and cathodic tafel slopes are coming out same (approx.).

19 May 2019 3,147 3 View

How to choose training data from a satellite imagery for supervised classification?

I am performing supervised classification of Sentinel 2 imagery using a Random Forest Classifier. I wish to select the training data from the image. Could anyone please tell me the method to...

06 February 2018 8,644 2 View

What is the procedure to extract single band from Sentinel 2A and export it as GeoTIFF in SNAP?

I am trying to export individual bands from Sentinel 2A file by clicking the individual band and using the Export -> GeoTIFF option from file menu. But every time complete dataset gets exported...

14 October 2017 8,718 3 View

High Strength Low Alloy Steels (HSLA)?

13 April 2017 5,349 4 View

Creep and Superplasticity notion?

For better creep resistance of the material, the single crystal is recommended, like single crystal nickel superalloy for turbine blades. But, why the grain size less than 10 micrometres is...

17 February 2017 8,898 3 View

What kind of purification method is used for zika virus?

All papers only mention using supernatant of the cell culture. But wouldn't the FBS in the medium cause unnecessary binding?

26 January 2017 7,295 4 View

Where i can get hydraulic modulator dynamics for ABS? how ECU output actuate hydraulic valves and motor?

I an searching for hydraulic modulator dynamic and how to use my controller output( braking torque) to modulate pressure by actuating solenoid valves? Please help me... Thank You

09 November 2016 9,440 4 View

What is the relation between Equicohesive temperature and Recrystallization temperature?

What is the relation between Equicohesive temperature and Recrystallization temperature?

01 February 2016 4,366 1 View

Is the Lorenz curve the same as the cumulative frequency curve?

In case of the rank frequency data if after calculation of cumulative frequencies if the cumulative frequencies are normalized and the frequency curve is drawn (for cumulative frequencies) with...

07 January 2015 3,820 5 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

How climate change will influences human and animal behavioral change?

The role of climate change influencing the human behavior as well as economics interest

01 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

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