How can I select the best plasmid after sequencing?

I have transformed a drought-related gene of 1.7kb into pGEMt vector (E.coli DH5 alpha strain). After sequencing the plasmids (3 replicates) 4 changed amino acids are visible at different...

06 February 2021 336 3 View

What can be the problem in the isolation of Plasmid?

I've tried transformation of a 1.7 kb gene with DH5 alpha strain of competent cells and also used PuC19 as a control. After selecting colonies and broth-culturing overnight, I isolated plasmid....

27 December 2020 3,596 5 View

How to obtain thermodynamic potential differences of a reaction?

Adsorption reaction on SnO2 surface Say for ex. 2nh3 + 3O- NOx + 3h2o + 3e 2H2S + 15O- 2SO2 + 2h2o + 6e

02 August 2020 216 3 View

In Ag doped SnO2 nanoparticles, can we find silver ions on the surface? In a redox gas sensing using Ag doped SnO2, in what form silver attributes?

In a gas sensing process using Ag doped SnO2 nanoparticles on silicon substrate, in what form silver is present on the surface before adsorption and during adsorption of a target species. Can we...

15 June 2020 9,641 3 View

How can i reduce primer dimers and get my cDNA PCR amplification done?

24 March 2020 1,525 3 View

What is the substitute of soil in experimental purposes?

Soil as a reference is very complex and need to be simplified for experimental purposes. What could be a true substitute for this soil medium.

23 May 2017 381 5 View

What are the possible devices that could be used to study sleep in earthworms?

I need details to study sleep in earthworms belonging to different functional categories. The problems are: (i) alternative medium to replace soil, (ii) colour of light to be used, (iii) flexible...

16 October 2015 5,323 4 View

Is anyone familiar with the green disposal of both organic and inorganic wastes in bulk, of a Pharmaceutical Industry?

08 April 2015 1,556 3 View

How can a bio-sensor be designed and developed for detection of plant metabolites specifically flavonoids?

05 August 2014 3,094 3 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 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

Which database would give me this list of chemical components?

Dear colleagues: I would like to know if anyone knows of a database that gives me the parameters pH, K, K, Mg, P, C, N, Zn, Cu, Ni and Cd of common foods. I find a lot of information of proteins,...

26 February 2021 5,525 3 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 there an ideal incubation time of RGO-modified SPCE before subsequent use, i.e., electrochemical characterization or further modification?

I notice that upon washing and air-drying of my RGO/SPCE surface and characterizing again via DPV, the current response towards ferricyanide probe significantly decreases. My worry is that the...

22 February 2021 5,324 3 View

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22 February 2021 9,932 11 View

Can anyone help or comment on solubilising chlorobutanol in aqueous injections in minimum time possible?

Please suggest solubilisation of chlorobutanol in injections. Tried pH and high temperature. But the issue is of assay drop. If anyone can suggest any solution. Its a commonly used excipient for...

21 February 2021 7,397 1 View

What reaction will occur when adding hexamine into ammonium nitrate in an acidic medium?

Hello, I am investigating properties of water in oil emulsion explosives. And adding hexamine (hexamethylenetetramine) into one of the phases that are used to make the emulsion should increase the...

21 February 2021 8,680 1 View

What properties of water shall be analyzed and evaluated to test the effectiveness of activated carbon?

I would like to ask what other properties of water (pH and such) shall be analyzed and evaluated to test the effectiveness of activated carbon from filtering the contaminants present in the water?

20 February 2021 9,422 8 View

Phenol-pH graphic?

We want to use phenol pH graphic to measure the pH of mediums before and after inhibitor application to cells. We have phenol absorbence values at 460, 560 and 720 nm wavelength. When we measure...

20 February 2021 7,700 3 View