Different Raman spectra of graphene like quantum dots?

The characteristic raman spectra that I've obtained for graphene like quantum dots shows a kink at about 1450 cm-1, this is different from the reported literature. What can be the posible reason...

01 February 2020 2,243 3 View

How can I index XRD peaks of a graphite like sample?

I've a nano-scaled graphite like material, the XRD pattern is showing some peaks which are not matching with any of the reported literature. For example usually a broad peak is seen around 21...

01 February 2020 6,185 2 View

What can be the perfect GC-MS operating conditions for acetonitrile?

I have to analyse the change in composition of acetonitrile after being reacted mechanically at different time intervals, hence I'm planning to undertake a GC-MS of the samples. Can anyone suggest...

05 June 2019 9,128 8 View

What is a Solid State Metathetic Reaction?

What kind of synthesis is this SSM route useful for?

03 April 2018 9,998 2 View

Can retention time for a particular compound change when detected at various wavelengths?

I'm using a PDA detector HPLC unit, I was wondering whether it is possible that the retention time can change for a particular compound when the detector is set at a different wavelength, all...

11 December 2017 5,337 6 View

What can be the plausible reason for increase in the area of a peak in HPLC spectrum, even when the reaction is to degrade the compound?

I'm withdrawing samples after a 15 minute interval for 90 minutes. Hence, the 90th minute sample is to show the highest amount of degradation or the least peak area, but it shows the highest, this...

10 November 2017 5,853 7 View

What is the JCPDS card number for potassium ferrioxalate trihydrate crystals?

How to identify crystalline phase data from the XRD data of the said crystals

08 September 2017 345 2 View

Why is the lambda max of dibenzothiophene chosen as 275-284nm and not 230-240nm?

In most research papers the wavelength chosen for DBT detection is 284nm, but according to the NIST data the maximum absorbance occurs around 230-240nm. Can anyone explain why it is...

07 August 2017 3,923 4 View

Which is the better analytical software Modde Pro or Design expert? Why?

07 August 2017 5,576 4 View

Will dextran coated iron oxide nano particles react adversely in an acidic medium?

Nanoparticles Iron oxide Acid HCl coating

05 June 2017 7,300 4 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 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

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

How optimize the Size Exclusion Chromatography?

Hello! I'll do a size exclusion chromatography, but I only have an open column, and I'll perform the peptide extraction from yeast, using buffer lysis (sodium phosphate 50 mM/NaCl 30 mM/DNAse and...

01 March 2021 2,215 2 View

Does anyone know HRM channel in a 2 plex QIAGEN Rotor- Gene Q qPCR can be used as a separate channel?

I am going to have 3 different probes in my qPCR work that I am going to do. But I realized that the machine we have in the lab is a Rotor-Gene Q 2plex HRM Platform, saying it has green, yellow,...

01 March 2021 8,544 1 View

I have designed reflectarray element and feeding it though Horn Antenna on HFSS. After full wave simulation, I am not getting desired results?

I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. After full wave simulation, i am not getting desired results i.e Radiation pattern...

01 March 2021 9,701 5 View

Precipitate after adding laemmli buffer to protein solution containing Potassium Acetate?

Hi, I am running a size exclusion chromatography experiment with a buffer containing Potassium Acetate as a salt. I analyse these fractions through SDS-PAGE. After boiling my SEC fractions in...

01 March 2021 2,622 3 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

Microstrip antenna design tutorial of HFSS 3D layout module ?

I have designed a 24 GHz rectangular antenna on HFSS 3D model and got desired results while desing the same antenna with same dimensions I am getting resonance frequency at 27 GHz I am...

28 February 2021 4,426 2 View