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

Where can I obtain a copy of the Sternberg Triarchic Ability Test?

I am interested in using the questionnaire to assess the intelligence profile of students in our department in relation to developing a plan of action for our teaching strategies.

03 April 2014 4,161 3 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

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

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 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

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

How optimize the Size Exclusion Chromatography?

Hello! I'll do a size exclusion chromatography, but I only have an open column, and I'll perform the peptide extraction from yeast, using buffer lysis (sodium phosphate 50 mM/NaCl 30 mM/DNAse and...

01 March 2021 2,215 2 View

Does anyone know HRM channel in a 2 plex QIAGEN Rotor- Gene Q qPCR can be used as a separate channel?

I am going to have 3 different probes in my qPCR work that I am going to do. But I realized that the machine we have in the lab is a Rotor-Gene Q 2plex HRM Platform, saying it has green, yellow,...

01 March 2021 8,544 1 View

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01 March 2021 3,905 5 View

I have designed reflectarray element and feeding it though Horn Antenna on HFSS. After full wave simulation, I am not getting desired results?

I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. After full wave simulation, i am not getting desired results i.e Radiation pattern...

01 March 2021 9,701 5 View

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View