For mixed conductors (ion and electron) how can we distinguish the activation energy contributed by ion and electron?

Activation energy at high temperature region corresponds to mobility energy. For mixed conductor, how can we determine the value of mobility energy due to the ion or electron? If we know the...

01 October 2014 1,727 6 View

How to identify nonribosomal protein synthetases, polyketide synthetases in bacterial genomic sequence?

We have recently sequenced a bacterial genome and it seems there is a good chance to find nonribosomal protein, polyketide synthetases. However the multimodular compounds are difficult to spot. I...

15 October 2013 6,043 1 View

Developing asthma in mice

How long does it take to sensitize mice with ovalbumin so that they develop acute and chronic phase of asthma or allergic airway inflammation?

13 March 2013 2,773 3 View

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I would like to ask your opinion on this statement. Is this true? Do you have any good references?

30 April 2012 9,903 8 View

Why Cadmus the Phoenician called the city he founded in Greece, Thebes and not by a Phoenician name?

Cadmus, a Phoenician, went to Greece having with him the alphabet and founded a city by the name of Thebes. Thebes was an ancient Egyptian capital city at one time. Cadmus was not an Egyptian.

01 January 1970 9,940 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

How can you bring two structures together to create an adhesive bond in LAMMPS?

I have created an Ice 1h crystalline structure and an Aluminium substrate structure and equilibrated both at 250K. Now I need to bring them together in a way that an adhesive bond is created....

01 March 2021 3,325 2 View

Necessary tube lenght to cool Natural gas in a dry-ice cooling bath?

I have a tank which contains natural gas at 250 Bar and 293 Kelvin. I want to cool the gas in a dry-ice cooling bath to about 195 Kelvin. The gas will flow in a copper-tube through the bath with a...

27 February 2021 8,128 1 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