How to isolate diazonium tetrafluoroborate ?

I'm trying to synthesis and isolate diazonium salt of tetrafluoroborate. this salt showing white color as per reported paper. while I'm doing after addition of NaNO2 colour showing faint yellow...

11 February 2020 4,590 2 View

How to calculate Eigen sensitivity matrix for structural dynamic problems?

I am solving finite element model updating problem. In order to achieve that i am studying inverse Eigen sensitivity method as a updating method. There, i am unable to understand how to calculate...

04 February 2020 4,513 4 View

What are the techniques to calculate impurity concentration in a metal?

Hello, Can anyone inform me on the techniques (other than semi grand canonical or grand canonical ensembles) that one can use to calculate the equilibrium impurity (say P) concentration in...

21 November 2019 5,137 3 View

Information extraction from unstructured documents?

I am looking for algorithm(s) to extract data and its value from unstructured documents. We were given list of tokens against which the information from the documents to be extracted. Going...

19 October 2017 9,065 3 View

How to calculate the amount of different phases in a composite?

Hi all, I have composites of magnesium silicate and magnesium titanate. I have confirmed from the XRD data that, they have different phases with the change in the composition. I want to calculate...

22 May 2016 1,566 2 View

Which is the best algorithm of cluster analysis?

I have read literature from different sources as well solved examples. However, it was not possible for me to identify best algorithm for a given set of data. The clusters created with one...

20 February 2016 4,160 5 View

How enhance transfection in CHO cells to express fusion proteins of approx. 90-100 KDa in size?

13 August 2015 5,668 4 View

What is the optimum sample size for factor analysis?

Number of initially variables varies from 8 to 50. In some cases even it is more than 50. Let us assume if one has 20 initial variables, what will be optimal sample size for the purpose of...

07 February 2014 4,302 38 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

Does any one can help me choose a reasonable basis set for intermediate metal ions interactions with guanine (i.e Fe2+, Mn2+, Cu2+ and exc.)?

Hello every body Does any one has any idea to help me choose a reasonable basis set for intermediate metal ions (i.e Fe2+, Mn2+, Cu2+ and exc.) interactions with guanine or other DNA organic...

01 March 2021 6,187 2 View

What could be some reasons why unstimulated monocytes are getting activated?

Im doing PBMC isolation -> CD14+ enrichment using magnetic beads -> stimulation setup. My negative control is just cells in cRPMI but they seem to get activated over and over again.

28 February 2021 7,883 3 View

How to make fractions of chloroform extract of plant, using seperating funnel?

28 February 2021 8,466 2 View

Why does intensity drops as concentration increases?

Is there any reason for decrease in fluorescence emission intensity of HSA,BSA when increase the concentration ?

28 February 2021 3,653 4 View

POlymer+DMSO solution and moisture??

What could be the reason of moisture at the sides of Vial when I am preparing my polmyer+DMSO solution for membrane fabrication? What etiquettes I am possibly missing here?

28 February 2021 6,516 5 View

Should we reduce the standard unit of length to 0.31951540592 meter ?

The reasoning behind this question is to align the ratios of the proton potential in energy per charge to the speed of light in distance per time. As these two dimensions appear to be related,...

27 February 2021 947 7 View

What could be reason for getting such type of graph for complex impedance in case of polymer blend films?

Its effect appears in real part of ac conductivity also. Can anyone suggest any reason behind it?

26 February 2021 3,487 3 View

What might be the reason for obtaining two bands in plant genomic DNA extraction?

I got a thin band and a thick band i guess it would be the genomic DNA and the 260/280 ratio is 3.

21 February 2021 6,523 6 View

Methodological confusions regarding deductive and inductive reasoning, hypothesis and theory test?

Hi Colleagues- What do you think about the following methodological issues: 1. Is it methodologically wrong to formulate quantitative research questionnaire based on inductive reasoning? 2. Is it...

21 February 2021 4,634 6 View