Hi, I am currently working on composition of Algerian propolis and it's antibacterial effect, I need An Interpretation of chromatographie hplc-uv, How could help me?
I have a response variable called skin yellowness, which I will measure via a scored color chart, whereby 1 is pale yellow and 15 is orange. I'm not sure if this counts as an ordinal variable,...
11 August 2024 4,793 1 View
Approximate concentrations are require in compared with the WHO permissible limts
11 August 2024 2,723 1 View
how can I read Waters, R. S. 1958. Morphological mapping. Geography 43 :10-17 from internet? note: not in google or resaearch gate
26 July 2024 7,813 3 View
How can the rubber fibres produced by the electrospinning device be removed from the fibre collector (aluminium foil) without affecting the orientation of the rubber fibres for use in reinforcing...
26 July 2024 8,281 0 View
Despite not having cells in the media, I am getting purple color. I have tried many troubleshooting methods, varying media types, and even different MTTs from different companies to figure out the...
21 July 2024 9,914 1 View
As PhD student specialized as food and industrial microbiology need to further research on bacteriocin and fermented food.
16 July 2024 7,394 1 View
What are some of the areas to consider in undertaken research in educational administration in MPhil.
14 July 2024 8,394 2 View
XRD analysis
08 July 2024 977 4 View
how i can calculate mathematically COD concentration if i add 1gr from glucose to 1 L distilled water
08 July 2024 9,104 2 View
Previously, I successfully modelled the transmission and reflection of electromagnetic waves incident on non-magnetic materials. Please refer to my publications for details: 1- A polynomial model...
05 July 2024 1,396 2 View
A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...
11 August 2024 9,801 2 View
Hello, Why do i see this baseline drift when i compare my blank (black) to the sample (blue)? Any suggestions as to why this happened? Thank you!
11 August 2024 3,770 4 View
I'm researching light sources and their UV emissions. I'm curious if a 50W, 7500K conventional LED lamp emits any UV light. I found that a 200W tungsten lamp can emit up to 1.5 mW/cm² at 350 nm....
31 July 2024 3,843 7 View
How can we calculate the percentage of configuration interaction (CI) in the UV output data of the Gaussian program? for example: Excited State 17: Singlet-A 5.1359 eV 241.41 nm...
28 July 2024 9,165 2 View
I was performing estimation of Total Soluble Sugar content in bacterial cultures by Anthrone method. Out of 9 samples, only one sample showed positive reading while others had a negative reading...
22 July 2024 9,576 4 View
For example, oxazine type moieties which forms diastereomers, how the separation can be done? Chiral HPLC is the only possibility?
10 July 2024 1,519 3 View
Hi, I need to measure the real-time (or temporal intervals) thickness variation of a transparent material from dry to wet/humid conditions, however, I cannot use the following techniques: -...
08 July 2024 4,799 4 View
Hi, Just curious to know that in chromatography, a chromatogram should be zoomed to what scale? 10 times of output , 50X or ..? Is there any regulation or general chapter which describes this?...
03 July 2024 3,119 6 View
I isolated a mixture of three compounds from the stem bark of a plant . I have NMR, Mass spec, IR, and UV data. There are a lot of things I can't make meaning out of. Kindly help me with the...
02 July 2024 9,531 4 View
I am trying to eliminate infection from my plates and therefore, gave UV treatment after addition of amino acid (used for better growth). Can you please suggest if UV destroys amino acids or not,...
02 July 2024 2,922 1 View