What solvent can I used for Paal Knorr reaction between 6-amino hexanoic acid and 2.5 hexanedione?

I am try to make the Paal Knorr reaction between 2.5 hexnedione and 6-amino hexanoic acid, my problem is type of solvent to use, because 6-hexaminohexanoic acid is soluble in water but I am not...

02 March 2021 4,443 2 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 drug is better to modify blood pressure in awake monkey, if I provide it in the food or drink reward?

I need to modify the blood pressure in a monkey while is awake in the recording chamber, and I am planing on provide a drug for that in the food or water used for reward... any advise? Thank you

08 February 2021 9,900 1 View

Why do my cells die during transfection with JetPei?

Hello everyone, two months ago I did a transfection of HEKs cells to insert a miR using the JetPei reagent. On that occasion, the transfection was highly efficient and the cells were in perfect...

03 February 2021 1,296 6 View

Moving bacteria-like organisms in my HEK293T cell culture?

Hi everyone, I have been culturing HEK293T cells that have been engineered to overexpress the mechanosensitive protein Piezo1. However, I am finding it very difficult to keep them in culture -...

02 February 2021 7,892 4 View

Has anybody a protocol to determine the AChE activity in larvae zebrafish brain?

Even following the instruction of Karnovsky and Roots (1964), I still do not know how long I should fix the larvae and in what fixative. Could anyone help me? Thank you!

14 January 2021 385 2 View

What fluorescent dye can be used in fixed cells for membrane imaging?

07 January 2021 4,802 2 View

R package for multivariate dispersion as a measure of beta diversity?

Hello, everyone: I've been reading some old and new papers on how to compute beta diversity using incidence or abundance data from several assemblages/communities. For my data, I am interested...

03 January 2021 9,293 1 View

How to structure a Knowledge Management model, to strengthen research and improve educational quality in higher education institutions?

22 November 2020 8,558 9 View

How to hydroxylate the surface of bismuth telluride nanoparticles?

Would it be possible to add -OH functional groups to Bi2Te3 nanoparticles?

07 October 2020 6,560 3 View

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 View

Do you know good and user-friendly programs to measure plant quantitative traits?

For my research i will need to measure plant quantitative traits (especially leaves area and roots length, but would be nice to add some more information). I recently discovered...

01 March 2021 5,035 2 View

Does anyone know how to plot my station to a section plot on Ocean Data View (ODV)?

I made a vertical section plot with WOA .nc file on ODV, and now I want to plot my stations (csv. file) in it. Does anyone know how to import my points to the section? They are two different...

01 March 2021 3,610 1 View

Any suggestions for a website that allows you to create questionnaires and gather unlimited data (Totally free)?

I have found only four of them; www.surveyplanet.com www.online-anket.gen.tr www.surveey.com and of course google forms. Expecting to see your suggestions if there is any. Thank you

28 February 2021 3,237 3 View

To date, according to health authorities, 30% of the population's diseases are initiated by drinking water pollution. Do you know this problem?

The main studies are as follows: * regular and timely receipt of information about the state of the environment using automated systems (stationary and mobile); * operational analysis of the...

23 February 2021 912 5 View

How do historians determine the credibility sources in modern history?

For a source to be considered reliable it must contain accurate historical information. But how does one determine the accuracy and reliability of sources in modern and recent history since not...

23 February 2021 1,346 13 View

Do I need to ask permission to use pictures for my questionnaire?

I would like to use some photo from a government website for my questionnaire. But, different photo is from the different owner. So, should I just get permission from that government body or still...

23 February 2021 1,631 3 View

How can I get the coding gene sequences of Hela and U2OS cell lines? Is mRNA sequence of Hsp90 alpha tissue specific??

I am looking for hsp90 mRNA sequence in Hela and U2OS cell lines, I have tried through ncbi but always the output is hsp90 in homo sapiens not in the specific cell line. Kindly, could any one...

22 February 2021 1,853 3 View

How do you interpret multiple meta-regression in STATA?

Please could someone recommend a resource that explains performing meta-regression with multiple moderators. I have read the STATA META ANALYSIS REFERENCE MANUAL, but this only gives examples of...

17 February 2021 7,376 1 View

Can anyone pls provide me information regarding the libraries where from i can get the absorption data of different materials used in solar cells??

I want to create .abs file ( absorption) for simulating solar cell in SCAPS. Can anyone pls provide me information regarding the libraries (websites) where from i can get the absorption data of...

10 February 2021 6,034 7 View