How to adjust a SEM parameters to get a good resolution for the image ?

i synthesized pyrochlore nanopowders and i want to get a clear image using SEM techniques but oI have to know more about the parameters

12 October 2020 4,146 5 View

Why does my empty vector control fluoresce more than my fluorophore-containing vectors?

I'm using the SpectraMax M3 from Molecular Devices to read 96 well plates which contain wells with E. coli transformed with vectors containing a fluorophore under an inducible promoter. On this...

03 November 2019 1,787 1 View

Which isotope should I choose when doing ICP-MS?

12 September 2017 6,528 5 View

Can I use the quantile regression to test a interaction term?

Hey, everyone ! I really need some help for my research! Basically, my study focus on how the relationship between a and b is moderated by c, so c supposed to have moderate effect on the relation...

19 June 2016 4,639 4 View

How to embed Eu-doped Y2Sn2O7 in the co-precipitation method

using a coprecipitation method, I am preparing nanopowders Eu-doped Y2Sn2O7 and I want to embed these nanoparticles, how to do that using the same method

01 January 1970 5,080 3 View

How to decrease the Z-Average(d.nm) and the PdL in Th DLS measurements and what is the right method to disperse nanoparticles ?

I am measuring the size of my nanopawder (after dispersing them in deionized water ) and every time the Z-Average and the PdL are high

01 January 1970 2,153 4 View

How to reduce the size of nanoparticles? (after having synthesized them by coprecipitation method) and how which solvant should i use for DLS

I had synthesized nanopowders by using the coprecipitation method and I got 300nm of size but I want to reduce their size for better imaging and results and also I want to characterize them using...

01 January 1970 1,789 6 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

Adherance of Polyaniline coating over stainless steel?

Is the electropolymerisation of polyaniline coating over stainless steel (SS) via Cyclic voltammetry technique is really adherant? Else how to improve the adhesion of the coating, whether any...

01 March 2021 8,220 2 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 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

Is anyone familiar with the cyclic compressive fatigue testing (BS EN 12697 - 25) ?

I would like to get more information on the cyclic compressive fatigue testing (BS EN 12697 - 25) which is typically done for bituminous material in pavement design. Any one can advise on the...

28 February 2021 2,004 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

Can we recognize signs of the "volatility clustering" property of a time series in its time domain plot?

My purpose is to recognize the volatility clustering property without statistical tests such as The Lagrange Multiplier (LM) test.

24 February 2021 4,150 3 View

Any easy method of analyzing vitamin D in foods by HPLC?

Looking for method of extracting and analyzing vitamin D in foods by HPLC

24 February 2021 7,524 7 View

What HPLC Marker(s) should be used to detect anthocyanins in a sample?

What HPLC Marker(s) or standard is used to detect and quantify anthocyanins such as Delphinidin, Cyanidin in a given sample of plant extract?

23 February 2021 1,832 4 View

How we can measure Kemp % in wool without using of benzene?

Would you please let me to know about the methods for measurement of medullation and Kemp % on animal? My problem is that the wool sampling and sending to laboratory is not possible. So I would...

21 February 2021 7,260 4 View