How to solve carry-over and interference problem when detecting tulathromycin by LCMS?

I am working on the determination of tulathromycin in rat faeces using QE-focus (Thermo Fisher)(Waters BEH C18, 2.1x100mm, 1.7um)(0.1%FA+H2O, 0.1%FA+ACN) . I encountered two tricky problems....

02 January 2021 2,713 5 View

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21 October 2020 7,860 3 View

Can anyone share image dataset of food such as cheese, fruits, one object per photo?

I need a dataset of food items. Prefer one object per photo. Any hints are helpful.

05 October 2020 536 5 View

Electropolymeriztaion to synthesis polymer film. But it is too thin, what to do?

Hey guys, these days I am using electropolymerization to form polymer film. I mimiced the procedure of the paper, and got very thin membrane (~hundreds of nanometer), while the paper says they...

24 August 2020 3,379 7 View

Is there a gentle method to reduce cuprous oxide to copper while maintaining the original morphology?

Hello, Recently, I have synthesized some cuprous oxide nanomaterials and want to reduce them to metal while maintaining the morphology. Is there a way to do this?

04 August 2020 4,850 3 View

What is the best way to register crop point clouds and spectral information in a plot of the field ?

Hi everyone, The goal: i want to register crop point clouds and spectral information in a plot of the field. The data detail: 1.The crop point clouds will be obtained by terrestrial Lidar (or UAV...

05 July 2020 9,128 5 View

The collagen gel evaporate with 3D organoid model (air Liquid interface method), why?

Hi, guys, I have a queation, please help me. I used air liquid interface method to do 3D culture. This is the first time to do it. the collagen gel prepared according to literature, 8 vol of...

13 May 2020 7,288 2 View

Can someone recommend me how to plot such pie chart for analyzing antibody germline usage and somatic hypermutations?

I would like to analyze the germline usage and somatic hypermutations of a large number of antibody sequences, can somebody recommend a software or R package to generate such pie chart plot...

28 March 2020 9,574 2 View

How often to get more loci/SNPs from reference based compare to de novo in RADSeq?

Hi, I have this simple but wired question that how many of you ever compared the results of the same data set using both reference-based and de novo approach, and get more loci/SNPs using the...

16 February 2020 9,641 4 View

Can pramipexole be used instead of apomorphine for the verification of 6-hydroxydopamine induced Parkinson's disease mice model?

since apomorphine is not availble, and pramipexole and apomorphine are both dopamine receptor agonists, so I'm wondering if I can use other dopamine receptor agonists to verify the rotation test...

08 January 2020 152 3 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

No title

01 March 2021 3,905 5 View

How vaccines of covid 19 work?

Millions ask how vaccines of covid 19 be successful and safe, its here to explain generally how vaccine of pfizer work ,mRNA vaccines teach our cells how to make a protein that will trigger an...

28 February 2021 2,723 4 View

Which group formation theory do you recommend for projects that aim to bring together entrepreneurs for training for regional development?

I would like to have ideas about which theories of group formation are suitable for entrepreneurial training projects, with the aim of creating bonds, building trust, and collaboration for...

28 February 2021 4,223 2 View

What is the most common number of epitopes in an multi-epitope Vaccine?

hi everyone, I'm interested in the field of vaccine design specifically multi-epitope cancer vaccines , I want to know if there is a minimum and maximum number of epitopes we could use in a...

27 February 2021 3,882 3 View

Standard curve shifting over time. How do I stabilise the ELISA?

24 February 2021 1,365 3 View

Do you think there is cognitive oversaturation in the current pandemic? What impact can this have? And other manifestations?

Dear colleagues, Do you think there is cognitive oversaturation in the current pandemic? What impact can this have? And other manifestations? The question is mainly aimed at adolescents (pupils,...

23 February 2021 7,796 4 View

What is the optimum time and temperature of blanching and pre-frying potato for frozen fries?

I am helping a local home industry for developing frozen fries from their local farm. I want to know what is the optimum blanching and pre-frying temperature and time for processing. Please also...

23 February 2021 1,616 5 View

Alternative to mediation analysis?

I am currently working on my dissertation and want to explore the role of competence as a mediator between the effect of colour of clothes on voting intention (focus on Western countries)....

21 February 2021 8,609 1 View