Why there are multiple spikes around 50Hz (Power Interference) in frequency domain (fft)?

I am working on a project related to sEMG classification. In order to process the signal, I am trying to filter the signal, especially power interference. The signal is acquired from Delsys...

07 December 2020 9,745 10 View

What is the best way to plot Ct values for a gene expression in different Samples ?

Hi I want to plot a graph for Ct values from qPCR assay that resulted from a gene expression in different samples.

29 October 2020 1,384 3 View

How to filter resonance frequencies in Matlab?

Following Image presents the frequency domain of sEMG signal which was sampled at 4000Hz. However, unexpected noises were captured during the experiment. I believe that these are some sort of...

29 August 2020 7,421 3 View

What changers can occur if Arsenobetaine (Organoarsenic) digested with an acid (Nitric acid) ?

Arsenobetaine is the non toxin organic form of Arsenic commonly found in fish.If muscle of fish samples subject to a acid digestion, will non toxic nature be changed

30 May 2020 9,109 4 View

Any explanation about the effect of the pH value on SARS-CoV-2 Virus activity ?

Some studies reveal that SARS-CoV-2 virus activity can be mitigated at the alkaline pH medium (above pH= 7.5). Any explanation about the mechanism or the Chemistry behind this phenomenon.

28 May 2020 9,352 3 View

How to input a set of data from an Excel sheet into MATLAB Simulink?

I've got Solar irradiance data and Temperature data for a month in 1 hour time intervals in a Excel sheet. I've modelled a Simulink block set to get the Output of a PV array. Unfortunately, I'm...

27 May 2020 3,072 5 View

What is the best technique / extraction method for extract sesquiterpene coumarins from oligo-gum resins of Ferula asafoetida ?

Phyto-chemicals such as Conferone, Samarcadin, Bdrakemin Farnesiferol A, Fernesiferol C and Galbanic acid can be isolated from Ferula asafoetida. suggest proper extraction methods and solvent to...

22 May 2020 6,350 6 View

Can the sign of a coefficient change from + to - when treat for endogeneity?

Hi, I'm running a model to see the growth effects of the exchange rate. The coefficient that I got for the real effective exchange rate is positive significant under the fixed effect model and...

19 November 2019 6,677 1 View

How do I amplify a 7.4 KB fragment in mouse genomic DNA ?

I am struggling to amplify an 7.4 kB fragment which I need to confirm my CRISPR KO. I have tried Pfu and Phusion polymerase, used both HF and GC buffers, tried 50 - 70 C temp gradient, DMSO...

27 March 2019 9,699 3 View

How to design best primers to amplify a region in mice genomic DNA?

What is the database I should select under the Primer Pair specificity parameters in NCBI primer design tool?

14 March 2019 7,696 2 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

What solvent can I used for Paal Knorr reaction between 6-amino hexanoic acid and 2.5 hexanedione?

I am try to make the Paal Knorr reaction between 2.5 hexnedione and 6-amino hexanoic acid, my problem is type of solvent to use, because 6-hexaminohexanoic acid is soluble in water but I am not...

02 March 2021 4,443 2 View

How to polymerize TEOS?

I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...

02 March 2021 1,404 6 View

How can extract ciprofloxacin hydrochloride disolve in water er to organic solvent such as dichloromethan or any other solvent?

I need a procedure to extract the ciprofloxacin hydrochloride from aqueous solution by using dichloromethane in detail,. I thank you very much.

01 March 2021 4,306 1 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

How to make fractions of chloroform extract of plant, using seperating funnel?

28 February 2021 8,466 2 View

Why am i not getting solid after reacting APTES with salicylaldehyde?

The reaction of APTES with salicylaldehyde in ethanol leads to the formation of imine compound yellow solid which is mention in literature, but I am not getting yellow solid I don't know why? when...

28 February 2021 2,955 2 View

can I treat waste water containing solvents and alcohol with electrocoagulation?

there are solvents and alcohol in the waste water of a factory that produces disinfectants. Increasing this waste water requires very serious operations. Can I treat this waste water with...

27 February 2021 2,609 3 View

Which transition metal salt precursor is best for doping? Why?

I would like to synthesize a transition metal doped TiO2 via solgel method. Hence, I would like to know which metal salt precursor to choose among Chloride, Nitrate, and Sulphate. A clear...

27 February 2021 4,285 3 View

How to replicate the well conditions of a crystal hit with 20%(w/v) isopropanol?

I had a crystal hit in a well with 0.1M HEPEs pH 7.5, 10%(w/v) PEG 4000, and 20%(w/v) isopropanol. Why is isopropanol in w/v here if it's just solvent? How do I recreate this well condition?

25 February 2021 9,761 1 View