What is the unit of extinction coefficient?

Hi dear researchers Is it right use 1/mmol unit for extinction coefficient (molar absorption coefficient) instead of 1/mM? (I see this in some atticles)

11 December 2018 3,989 4 View

Why DNA polymerase require a primer but RNA polymerase does not?

Dear researchers Why does DNA polymerase need an RNA primer? but RNA polymerase don't? What happened in catalytic site?

05 June 2018 4,919 0 View

What is the role of polyubiquitin in DNA repair?

Dear researchers I want to know polyubiquitin roles in DNA repair .(briefly)

04 May 2018 8,492 0 View

What is metagenome?

Hi dear researchers I Want to know about metagenome and metataxonomic (definitions and applications). Why we need metagenomics? How metagenomics differ from genomics?

03 April 2018 3,299 0 View

How many torsion angles(Dihedral angle) are there in nucleotide?

Dear researchers, I want to know about torsion angles in nucleotide. Can someone help me?

31 December 2017 2,982 0 View

Does H2O2 have oxidation effects on the nanomaterials?

Dear researchers, Nanomaterials such as nanotubes and nanoporouses are used for immobilization of peroxidase enzymes. H2O2 is one of the Horseradish peroxidase enzyme substrates. Does oxidation...

31 December 2017 2,653 0 View

How Recombinant Insulin is produced?

Dear researchers, I want to know about methods of producing recombinant insulin. Could anyone help me with some literature. Thanks in advance

11 December 2017 2,956 4 View

How sulfide concentration is measured by standard spectrophotometric method?

Hi dear researchers In a nature report "Amperometric inhibitive biosensor based on horseradish peroxidasenanoporous gold for sulfide determination" measuring sulfide concentration in a wastewater...

10 November 2017 5,111 3 View

How gene expression can be regulated by mRNA structure?

Hi dear researchers According to this sentence "mRNA Spatial shape can effect on gene expression even the amount of gene expression" I waned to know how gene expression can be regulated by mRNA...

09 October 2017 3,209 4 View

How biological element attach to surface in biosensors?

I study a bout biosensors and bioreceptors... I am new biochemistry student...and I want to know a bout surface attachment of the biological element in biosensors... it is mystery for me ...

09 October 2017 1,228 4 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

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

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