How Bacteria changes the pH of nutrient broth media?

Bacteria can change the pH of media by producing EPS. In my work, initial pH of nutrient broth is 6.5 and after the bacterial growth pH increases about 7.5. Which type of reactions can involved in...

01 February 2019 7,393 5 View

Is siderite protective in nature for metals?

If mild steel exopsed to a solution for 3 months. after the 3 months exposure siderite is present in corrosion products. I observe that in this case corrosion is more in comparision of control. I...

10 November 2017 6,173 2 View

What are the effects of sulfites on corrosion?

06 July 2017 7,716 1 View

What is the difference between impact factor and impact index?

Please tell me what is the difference between impact index and impact factor? Suppose If any journal have impact index 4.3 what does it means?

09 October 2016 6,010 1 View

Bacterial growth by spectrophotometer

Why we take the optical density of bacteria at 600 nm generally. what is the basic concept behind it?

03 April 2016 1,557 6 View

Which technique i can use tomeasure biofilm thickness on metal surface?

How can i measure the biofilm thickness diposited on metal surface?

02 March 2016 2,753 5 View

Is Pseudomona aeruginosa an Iron oxidizing bacteria? how can i confirm that the bacterial isolates are iron oxidizing?

Is Pseudomona aeruginosa an Iron oxidizing bacteria? how can i confirm that the bacterial isolates are iron oxidizing?

01 February 2016 8,978 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 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

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

Multi effect distillation modeling in EES?

Dear colleagues If anyone has a model of multi-effect distillation in EES or MATLAB software, please send it to me.

24 February 2021 7,282 1 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

What is the best etching method for Mg-Ca alloy?

I have used Picral etchant (4.2 g Picric acid, 10 mL Acetic acid, 70 mL Ethanol, 10 mL distilled water) but it didn't work. Is there any alternative?

21 February 2021 2,558 5 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