About pesticide recovery in poultry feed i got 30% recovery how do get 100 %recovery?

More Karthikeyan Periyasamy's questions See All

How to filter few markers from a gene set?

I am not good in bioinformatics. I have a gene set which has some 1000 genes which are highly correlating with aging. I want to select some highly significant genes from this geneset for further...

04 November 2020 5,602 5 View

Base paper for renewable energy forecast especially wind energy?

Please suggest me a good base paper for forecasting renewable energy. I am interested in doing research on applying deep learning neural network model for forecasting. Thank you

17 November 2019 2,234 5 View

Where can I get wind energy data for carrying out forecasting research?

Dear Researchers, I am started exploring forecasting research work for renewable energy forecast especially wind. I want to develop a DNN model for forecasting of wind energy. So I need a standard...

14 November 2019 3,854 7 View

What will be the perfect markers to differentiate Neural Stem cells from differentiated Neurons?

I've been working on differentiating Rat fetal Neural Stem cells into Neurons with a drug of interest. The Problem here for me is I have used various Neuronal markers like MAP2, TUJ1, NFM to...

15 October 2019 7,114 5 View

How to extract elevation value related to a particular pixel (latitude, longitude) in USGS 1-arc-second SRTM Geotiff file using python3?

Attached the elevation data from USGS 1-arc-second SRTM data. I understood that every pixel is associated with a latitude/longitude and elevation data at that location. I want to extract the...

30 August 2019 7,094 3 View

What is the difference between fuzzy optimization and mechine learning optimization? In which kind of application, we can prefer fuzzy optimization?

Difference between fuzzy optimization and mechine learning optimization.

13 August 2019 9,248 1 View

While creating analytical fields using expressions in Abaqus, what will the unit of theta if we use trigonomtetric function?

I have applied pressure as trigonometric function using the expression cos(2*atan(Y/X)). I would like to know what will the unit of atan(Y/X). Is it in Degree or Radian?

10 July 2019 8,518 3 View

Why the SOD1 mutant model expressing the mutant protein but not the native protein?

I am working with drug activity on familial ALS model cells. I am using mouse Neural stem cells which express the mutated human SOD1 protein. I did western blot with the protein extracted from the...

14 March 2019 511 3 View

How to use fatigue tool for composite in a Ansys workbench?

Currently doing final year project in a leaf spring fatigue test in Ansys workbench 16.0. we have done fatigue test for steel, but error came for composite while testing we don't know how to...

07 March 2019 3,100 2 View

Crack initiation and propagation in Fe-safe?

Whether crack initiation and propagation in the finite element model could be obtained from the results of Fe-safe? Is it possible to know how the crack propagates?

30 January 2019 7,736 3 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

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

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

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

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

HPLC baseline failure (ACN/Water)?

My baseline increases without any explanation, it is only fixed by changing the solution B, will it be the column? Reagents? Bomb? Detector? Solution A: H3PO4 0.01% IN WATER Solution B: H3PO4...

21 February 2021 5,656 3 View

Which vial septa the right one to be used for HPLC?

This is the unanswered question stored very long in my mind and till now I could not find a right answer. Google search educated me that the red surface is the PTFE material compatible to wider...

21 February 2021 546 3 View

What is the stability of 2 3-dihydroxyquinoxaline in acidic water?

I'm developing a UHPLC assay, and the fluorescent product is 2,3-dihydroxyquinoxaline. The reaction to produce this requires hydrochloric acid (about 1.2 M). Will storage in this acidic...

20 February 2021 5,820 4 View

C.A. (Kees) Kan

!00 % recovery is seldom achieved and not essential. A consistent recovery might be much more important.

Reaching a better recovery is often a matter of trial and error. Literature data on the compound(s) you are interested in, might be of help

Bruce Neagle

AAFCO (American Association of Feed Chemists) supplies reference materials (feeds).

Karthikeyan Periyasamy

100 %recovery not essential mr.kan at least 80% recovery means i submit .