What spectrophotometric method can be used to detect and quantify total nitroso compounds in wine?

The samples will be fruit wines, since nitrosation in red wine was reported to contribute to mutagenicity. So far, a chemiluminescence method was reported, although our laboratory has limited...

11 December 2014 7,314 6 View

What is the best assay to detect pro-oxidative stress in bacterial and cell cultures?

I am interested to know what assays can be used to detect pro-oxidative stress in cells.

04 May 2014 8,839 2 View

Can science education graduates perform experimental research in chemistry?

I am aware that chemistry science education students should perform science education research. But is it allowed for a student to conduct research on natural product chemistry or environmental...

03 April 2014 5,009 2 View

Which is a more appropriate statistical test for assessing genotoxicity of samples: Student's T-test or ANOVA?

I compared the genotoxicity of four compounds (metal complexes of an organic compound) with the positive control. Most studies utilized Student's T-test. What I have in mind is ANOVA with post hoc...

11 December 2013 8,060 5 View

Is there a protocol for the isocratic HPLC for ochratoxin A and sterigmatocystin using UV?

I am planning to quantify the two fungal toxins in coffee simultaneously using HPLC but our equipment has no fluorescence detector. Is it possible to utilize UV detection?

09 October 2013 3,196 4 View

How do you isolate proanthocyanidins from peanut seed coat extracts?

Proanthocyanidins in peanuts were reported to be similar with those found in cranberries. In some references, ethyl acetate was used. How do I remove ethyl acetate and produce a pure...

04 May 2013 9,071 3 View

How do you separate biogenic amines using paper electrophoresis?

I used a pH 6.0 Phosphate Buffer Solution, and regular paper chromatography at 100V. It did not work well though.

03 April 2013 4,569 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

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

How can the use of Jolly Phonics improves the quality of reading, speaking and writing in rural disadvantaged communities in Papua New Guinea?

Jolly Phonics reading program is an effective way to teach early reading to young learners. How can lectures at the university prepare early childhood student teachers to teach Jolly Phonics to...

03 March 2021 3,731 3 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