Why polyethersulfone membrane is hydrophilic?

Polyethersulfone membrane are generally hydrophilic. How can I explain this in terms of chemistry, molecular structure and functional group?

03 January 2021 6,321 7 View

Does "response to item ratio" has any effect on "inter-item correlation"?

Suppose a survey was conducted with a lower sample size (less than 100) for factor analysis of the items (less than 20). Now would a larger sample size increase the inter-item correlation? What...

27 December 2020 1,722 3 View

Why my qPCR assay stopped working?

My qPCR taqman reaction has stopped working. It's a duplex reaction that amplifies a sample and an internal control having FAM and VIC probes respectively. I use a Quantstudio 6 flex equipment....

27 May 2020 5,653 4 View

Physical explanation of G and D peak in RAMAN spectroscopy of Graphene?

Hi, Can anyone explain me physical significance of peaks D and G in Raman spectroscopy of Graphene. I know these are from in plane and out of plane vibration. Can someone please explain from view...

19 May 2020 263 4 View

Is there any widely practiced research design (questionnaire/ experiment) that measures stress level during a particular task?

Generally in biomedical science, measurement of "cortisol" is used, but I am looking for some "pen & paper" procedure that strikes out blood sampling or anything like that.

09 January 2020 1,328 2 View

Does organic farming ensure the food security?

Organic farming is very much popular. World population is nearly 7.8 billion now a days. So is it possible for the organic farming to ensure the food security of these 7.8 billion people?

23 December 2019 2,433 42 View

What is the best way to express Kruskal-Wallis test result visually (through graph)?

I have conducted an experiment regarding anthracnose disease of strawberry and the data collected for disease index appears to be non-normal distribution. As such, I conducted Kruskal-Wallis test...

11 December 2019 5,184 1 View

Between Ethanol and DMSO, which will be better for dissolving phenolic acids like rosmarinic acid, caffeic acid for using in antifungal assay?

I wish to conduct an in vitro assay of rosmarinic acid and caffeic acid against fungal pathogens using Czapek-Dox liquid media. In this case, between ethanol and DMSO which solvent will be better...

05 September 2019 811 10 View

Do colonies disappear from plates after transformation?

Has anyone ever experienced that colonies disappear from plates after transformation? I cloned a small fragment using NEB cloning kit and transformed into XL1blue. I got few colonies, kept the...

20 May 2018 3,063 3 View

Allelopathic effect of rice plant against weed?

Which part of rice plant have allelopathic effect against weed suppression? Does anybody have paper about allelopathic effect of rice plant against weed?

24 July 2017 6,877 7 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 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

Dapi fluorescence protocol for colon cell lines ?

28 February 2021 2,534 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