Mohammad Keyhani

7 Questions 11 Answers 0 Followers

Questions related from Mohammad Keyhani

Is it possible to do standard addition simultaneously in the multicomponent system?

I work on the determination of the three component system of heavy metal ions (Pb2+, Cu2+, Cd2+) in water by an anodic stripping voltammetry technique on a thin film of mercury on the glassy...

10 October 2018 7,939 9 View

Is detection of metal ions concentration (Pb2+,Cu2+,Cd2+,Zn2+) in trace amounts (0.1-50 ppm) possible with voltametric technique?

We want to determine heavy metal concentrations in a synthetic matrix, our requirement is a reliable and conventional procedure to find these metal levels in water, with no advance electrodes or...

04 April 2018 2,385 5 View

What are the practical applications of molecular sulfur nano-particles?

By sheer coincidence, I found a simple method to produce sulfur in aqueous media as a colloid. In my country sulfur is a very abundant and cheep. For these reasons i am interesting to investigate...

07 July 2015 6,053 9 View

What is the main difference between Analysis of Variance (ANOVA) and Sensitivity Analysis in investigation of varition in the mutivarable system?

I am highly confused about the mentioned methods. When we have a multivariate system like a chemical reactor many variables can changes the reaction yield.It is possible to do both ANOVA and SA...

03 March 2015 4,596 4 View

What is maximum allowed tolerance of lambda max for UV-Vis spectrophotometry of a organic compound?

I want to determine oxidation of hydroquinone to p-benzoquinone numerically. For solving this problem i preferred to use spectrophotometry. I ran some calibration experiments in Lab and with...

01 January 2015 6,604 7 View

Would you please consult me about energy loss in ultrasonic mixing?

Ultrasound waves have a huge energy and evidently they can’t convert completely into mixing force, a part of this energy convert to heat and increase the temperature of mixing media. I am working...

10 October 2014 5,869 5 View

Did you have any experience about Least Squares Support Vector Machines (LS-SVM) for function estimation? specially please describe about over-fitting

The main results of LS-SVM model are so perfect but I'm hesitant about using LS-SVM , due to it's results that indicates over-fitting occurrence. Do you have any similar observations? Is it safe...

08 August 2014 6,747 7 View