Why am I seeing a fluctuating GCMS baseline/ baseline noise?

I am working with a 7820A GC and 5977B MS. Recently, we changed the helium tank and since then we have been seeing baseline noise in the chromatogram which is high enough to interfere with my...

11 November 2020 6,520 2 View

What can these peaks in PL corresponds to ?

In Zno (pristine and doped) kindly help in the analysis of these PL results at exc. 510 and 380

26 May 2020 7,393 7 View

What can be the reason of getting a negative slope in W-H plot for my synthesised nano material ?

I got negative slope (W-H plot) in my synthesised nanomaterial and on doping that same material , I got negative slope again but it's value decreased . What can I conclude from it .

01 May 2020 2,230 10 View

How to increase the yield of extracellular DNA in extraction process from water samples?

I am using 1% CTAB for extracellular DNA extraction, followed by isopropanol precipitation, phenol chloroform extraction, ethanol precipitation and wash. How can I increase my yield?

02 March 2020 7,947 3 View

For studying electrocatalytic behaviour of a nanocomposite what should I do?

I have prepared MgO nanocomposite in powder form . I want to check its electrocatalytic properties but I have no expertise in making electrodes as it is also not my guide's field. Is there any...

10 December 2019 10,027 3 View

What are the possible effects of the laser incidence angle on the sample(tissue)? Can it reduce scattering?

I am trying to build an optical tomography sytem and generate a SHG. I was wondering if changing my laser incidence angle on my sample can reduce scattering by a bit? Or is it best to keep the...

19 November 2019 7,829 4 View

Why absorbance is increasing on adding doped semiconductor NP?

I hve prepared a Doped Zno with diff conc. For photodegradation of a phenolic pollutant I got absorbance value higher. Is it mean that it can't be used for it or I should try something else

04 November 2019 3,506 4 View

What is the standard procedure to purify gallic acid from fermented sample?

I have carried out the solid state fermentation of organic substrate using Aspergillus niger.I want to purify gallic acid from it.Can anyone suggest me simplest method to do it with references.

18 June 2019 8,156 3 View

Which type of phenol has retention time between 10.91 minutes?

I have analyzed my sample using LC-Ms. The sample was fermented organic waste sample. Aspergillus niger was the microorganism used.

10 June 2019 9,710 4 View

What can be done if peaks are not coming proper for organic acids using LC-MS?

I have carried out solid state fermentation of sample containing organic waste.Due to limited facilities, I could only do filtration and centrifugation for my sample.But,when I subjected this go...

25 May 2019 4,856 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

What are the most reliable approaches to extract key continuous frames from a video, with complete automation?

I have an input video, of skin (from a microscope that means it is magnified such that blood capillaries are visible). The idea is to extract 15 sec of continuous frames from a video of 1 min,...

02 March 2021 2,735 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

How can extract ciprofloxacin hydrochloride disolve in water er to organic solvent such as dichloromethan or any other solvent?

I need a procedure to extract the ciprofloxacin hydrochloride from aqueous solution by using dichloromethane in detail,. I thank you very much.

01 March 2021 4,306 1 View

Which bacteria are suitable for quorum sensing screening?

I want to find a quorum sensing inhibitor from plant extracts. Klebsiella pneumoniae, Moraxella catarrhalis, Staphylococcus aureus, and Streptococcus pneumoniae. I looked for these strains...

01 March 2021 7,675 3 View

How to perform statistical analysis of coefficients extracted from transform techniques?

I am studying the potential of DCT and FFT coefficients extracted from a signal to classify the different objects that emit the signal. I applied the Shapiro-Wilk to confirm that data was not...

01 March 2021 8,079 2 View

How to remove fatty material from plant extract?

The resultant solid was partitioned three times with 250 ml of petroleum ether (40-60/c) to remove any fatty material and evaporated to dryness.

28 February 2021 9,464 2 View

Can water be extracted from Olivine?

I have always been interested in geology and wondered about how unique structures of materials behave in different circumstances. I stumbled upon Olivine, the magnesium iron silicate, and heard...

28 February 2021 7,330 4 View

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

28 February 2021 8,466 2 View

Good morning research fellows, Has anyone worked with senna alata plant extract on any kind of fish?

Literatures on the piscicidal effect of sennaa alata is scanty. if you have any related litrature either in the bark, leaves or roots used as treatment to any aquatic organism please kindly help...

28 February 2021 9,138 2 View