Is there any ingredient I an add into formula to slow down gas generation from Vitamin C?

I know Vitamin C is unstable and tends to be oxidized quickly. The problem here is I made a Vitamin C beverage at pH 4-5, and it starts to generate gas in the packaging, especially at high...

13 December 2020 6,055 1 View

Do you have experiences or publications on the nonlinear vibration analysis with Rayleigh-Ritz method?

Our research is turing to nonlinear vibrations of plates and solids of acosutic wave device strcutures. It is high frequency vibration, and associated phononmena can only be considered with...

01 December 2020 4,315 4 View

Does anyone know a company that does Pyrosequencing to determine mitochondrial DNA mutation heteroplasmy?

We are looking to genotype our mice. Our mice have a mutation in their mitochondrial DNA and we want to know the level of heteroplasmy i.e. % of mutation in their mitochondrial DNA. So we cannot...

09 November 2020 4,246 3 View

How can purify amount of ssRNA except gel purification?

06 October 2020 6,771 3 View

Why do I get the same model fit indices for bollen-stine bootstrap and ML in AMOS?

Hi Guys, I would highly appreciate some help/input regarding boolen-stine bootstraping in AMOS. Given that my data violated the multivariate normality assumption I have opted to run bollen-stine...

12 May 2020 2,391 3 View

Positive Zeta Potential NPs dispersed in water?

Hello guys I am looking for positive zeta potential colloidal particles dispersed in water which I can order online. pH around 6 to 7. The size its from 300 nm until 700 nm. Thanks a lot for...

28 March 2020 6,869 3 View

Shutdown of the BESA Research 6.0 when I apply the 'Automatic Artifact Correction' to correct artifacts of eye blinks in an 8-channel EEG data.?

Thank you for taking the time to read this. I have an EEG data recorded by an 8-channel wireless system. I want to correct the artifacts of eye blinks using the 'Automatic Artifact Correction'...

06 February 2020 4,744 1 View

What is the most recent agricultural model for grape/berry yield prediction?

Dear all, I am trying to create a machine learning model for grape/berry yield prediction based on some agricultural model, so would be great to hear any suggestions in relation to this area....

14 January 2020 9,008 5 View

How can I calculate band gap of nano metal particle?

I'm studying for nano metal particles. The metal particles diameter is about 5nm. And the particles are stuck on nano wires through UV irradiation. I mean the nano wires are soaked in metal...

08 January 2020 8,807 6 View

How to write a bus signal to workspace in Simulink?

I am facing a problem in Simulink. When I want to write a bus signal to workspace in Simulink, I fail. The next time I use a bus selector to select some signals in the bus and then write into the...

06 January 2020 10,036 3 View

Chlorinated organic formation in odor control scrubbers using hypochlorite?

I'm involved in a study of odor control technologies for municipal wastewater treatment plant. One of the control options involves a chemical 2-stage (acid/alkaline) packed bed scrubber. The...

03 March 2021 3,661 2 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

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View

What is the indication of the absence of peaks in Methanol electrooxidation CV curves ?

I have several question regarding the MOR; hope anyone help me better understand. 1- in CV using (KOH+MEOH) what is the indication of absence of the redox peaks? shouldn't they exist as a sign...

28 February 2021 4,851 8 View

How to remove DCU and HOBT from my reaction?

I am doing a acid and a chiral amino alcohol reaction using DCC and HOBT in DCM or THF? Can anyone suggest me how to remove DCU and HOBT from a reaction mixture??

28 February 2021 2,153 1 View

What is the most common number of epitopes in an multi-epitope Vaccine?

hi everyone, I'm interested in the field of vaccine design specifically multi-epitope cancer vaccines , I want to know if there is a minimum and maximum number of epitopes we could use in a...

27 February 2021 3,882 3 View

How to increase solubility of Poly acrylic acid in Dioxane solvent?

I am working with Polyacrylic acid (100.000Da) and instead of water, I need to use another solvent (dioxane) to dissolve PAA. However, because of the high molecular weight, it's quite hard to...

25 February 2021 2,225 5 View

Why is NH4OH added in heavy metals limit test?

The limit test I'm referring to is USP method II. In this procedure you need to dropwise add 6N of NH4OH to the sample until it the pH is alkali. After that you need to dilute and add HOAc until...

23 February 2021 2,049 3 View

Is it efficient to do liquid biopsy to investigate the gene expressions of the tumor?

To do liquid biopsy and look for specific gene expressions there are so many published papers. Thera are different protocols and procedures used to isolate circulating cell free RNA or mRNA from...

23 February 2021 7,326 5 View

Is this the write procedure for acid digestion of soil for heavy metal analysis using AAS?

How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?

23 February 2021 3,053 7 View