question anyone can answer?

suggest how to apply for post doctorate degree?

06 July 2018 6,796 2 View

What is the difference between degradation of polymers at low temperatures and degradation of polymers at high temperatures?

Can anyone point out the difference between degradation of polymers at low temperatures (around -150 degree celsius) and degradation of polymers at high temperatures. And also can anyone highlight...

21 May 2017 7,115 10 View

Why is entropy of mixing not zero for ideal solutions?

Theoretically speaking, entropy should increase while mixing two ideal mixtures (from Second law of Thermodynamics). But when mixing happens at constant pressure, (deltaH) =(delta Q) and thus...

13 March 2017 647 8 View

How does Thermal conductivity of nanofluid change with decreasing particle size of the dispersed nanoparticle?

Some papers, mention that with decrease in nanoparticle size, thermal conductivity of nanofluid increases. But some papers mention the same in the opposite way, that is, thermal conductivity...

28 February 2017 1,001 2 View

What effect will the nanoparticle size have on surface plasmon resonance?

It is known that increasing the size of the nanoparticle, increases the wavelength at which surface plasmon resonance occurs? But can anyone let me know what is the reason behind this? And how...

29 November 2016 7,651 4 View

Is there any database for Sudden Caridac Arrest(SCA) predicton using ECG signals besdes (MIT-BIH) database?

We have developed some novel algorithms in our group for early prediction of SCA using MIT-BIH database. We now need some other data sets to validate our algorithms.

30 June 2014 1,151 2 View

Will the invariant features of HOS will be useful for emotional state detection in EEG signals?

We have tried to investigate some conventional features in PSD (mean, energy, entropy) and Higher order spectra (HOS). But, the accuracy of emotional state detection is not much improved using...

10 February 2014 1,762 2 View

How to increase the spatial resolution of 14 channel EEG data?

An 14 channel EEG system is used to collect the data for clinical investigation. The spatial resolution of this EEG data must be improved for better clinical diagnosis. In the mean time, is there...

10 February 2014 9,749 8 View

Why is His tag not binding to Ni, or are there any non-specific interactions?

I am trying to purify my His-tagged subunit of a protein complex using a Ni-NTA agarose column. I am doing a WT control with no His tag on the subunit of protein complex. Based on Western Blot,...

08 October 2013 8,288 26 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

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 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

Do you kow of any database containing data on retention time, log P and polarizability for a large number of molecules?

Hi, I am a chemistry undergraduate doing my dissertation project on HPLC. In my project, I need to predict the HPLC retention time of 20 aromatic molecules, the calibration set. To do this I will...

24 February 2021 2,602 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 it efficient to do liquid biopsy to investigate the gene expressions of the tumor?

To do liquid biopsy and look for specific gene expressions there are so many published papers. Thera are different protocols and procedures used to isolate circulating cell free RNA or mRNA from...

23 February 2021 7,326 5 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