How to dissolve alpha melanocyte hormone (alpha-MSH)for long storage?

I am going to use alpha-MSH to stimulate B16F10 melanin production. I bought 1mg alpha-MSh from sigma. According to sigma, the protein dissolve in water. Can I dissolve the alpha-MSH in pbs, or...

06 December 2018 9,851 2 View

How to change the solvent used in preparing standard stock solution?

Hi, can I know how to change solvent used in my standard stock solution? For your information, I initially prepared the standard (styrene) in methanol and I need to change it to hexane. Can I...

05 February 2018 2,935 3 View

DPPH Assay for enzymatic antioxidant?

Assalamualaikum and Good Day. I am currently working with enzymatic antioxidants such as SOD, CAT, APX etc in rice plants exposed to different water level (water stress treatment). I am a bit...

11 September 2017 3,456 3 View

I need to detect same compound using HPLC in different sample. Should I construct different calibration curve for each and every sample I studied?

I need to detect styrene monomer from different food sample

03 June 2017 3,662 10 View

How can I test the statisitcal significance of mean frequencies?

This is the situation: I observed 12 classes (4 elementary, 4 intermediate and 4 advanced) without any intervention or treatment. Each class was taught by a different teacher. So there were 12...

29 May 2017 1,228 4 View

Is Tafel plot suitable to determine corrosion rates of organic coatings?

I'm doing research about anticorrosive composite coatings by using different filler compositions (1%-5%). Currently I'm using EIS to study the anticorrosive behavior of my coatings. My question...

16 March 2017 4,781 7 View

Which package in R to implement the feature selection that suitable for regression?

15 January 2017 5,834 2 View

What are the suitable solvent extraction for liquid-liquid extraction ketamine?

liquid-liquid extraction of ketamine for chromatographic analysis

03 April 2016 9,248 1 View

Is there strong evidence in increasing estrogen from soy protein?

03 March 2016 3,091 1 View

How to load a dataset in Hortonworks sandbox VMware hadoop 2.3.2?

28 October 2015 6,622 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

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 View

How to normalise data on OPM package from R Studio ?

Good afternoon, I recently used OmniLog from BIOLOG for my experimentations : I tested the metabolism of different strains on 2 types of plates. I have 16 strains of 3 different groups...

02 March 2021 3,584 1 View

How do I determine the degree of polymerization of PEG 400 based on NMR integration?

Hello, I am working on the photocatalytic degradation of PEG 400. I would like to know if it's possible to determine the degree on polymerization based on NMR integration, or by the MW of the...

02 March 2021 6,186 3 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

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View

POlymer+DMSO solution and moisture??

What could be the reason of moisture at the sides of Vial when I am preparing my polmyer+DMSO solution for membrane fabrication? What etiquettes I am possibly missing here?

28 February 2021 6,516 5 View

How to plot the probability paper of Gumbel distribution using R programing?

In R-studio, there are many commands of Gumbel package. Arguments are also different. I`m asking about the alpha parameter of the Copula which must be greater than 1. If this is the one used to...

25 February 2021 5,229 3 View

Has anyone had luck using cell lines other than HEK 293 (such as COS1) to package lentivirus?

I am looking to package lentivirus in endothelial cells but I am opposed to using 293 cells due to personal ethics regarding the source. I have done some reading and saw that COS1, COS7, & CHO...

25 February 2021 3,030 1 View

No title

25 February 2021 5,713 1 View