Have anyone tried SYBR green with GoTaq DNA Polymerase for a qRT-PCR?

Hi, everyone. I need to perform a real time reverse-transcription PCR in one step. What we have is SYBR green I PCR Master mix with GoTaq DNA Polymerase. So far, our attemps to perform the assay...

07 January 2021 6,507 3 View

Does international survey based researches needs approval in each country ethics commitee?

We plan a contingent valuation of ecosystem services. The study will be based on surveys. We want to apply it in fifteen different countries. Is it necessary to approve the project in ethics...

25 June 2020 8,099 3 View

How to choose the best smooth algorithm for your data in Origin?

I have several curves of applied potential versus electric current with hundreds of points in each of them. I am trying to analyze their first and second derivatives, but they are too noisy to...

27 April 2020 5,932 2 View

I can't make my RAPD-PCR work anymore. Can anyone help me?

Guys, I REALLY NEED HELP At the end of the last year I optimized every parameter of my RAPD-PCR, and as a result I did obtain great products multiple times. Then, I went home for my vacation (I...

18 February 2020 9,236 3 View

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10 December 2019 7,354 5 View

Hi, I would like to solubilize a hidrophobic compound in order to administer it to mices. Should anyone suggest a nontoxic vehicle?

The compound is very insoluble in aqueous solution and the compound administration will be given orally. The compound manufacturer has no information regarding the solubility of the compound....

16 January 2019 834 1 View

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Hello everyone! I have been consulting this webpage http://beast.community/ and http://www.beast2.org/ , but the examples for the use of BEAUti and BEAST are for old versions. The versions of...

02 April 2018 3,942 3 View

Two-step cluster in SPSS - how to validate results?

Hi everybody. After applying a two-step cluster in SPSS, involving both continuous and nominal variables, how can I validate if the results are satisfactory? In other clustering methods there are...

03 October 2017 5,765 8 View

Have you COI sequences of Potamotrygon orbigyi?

24 August 2017 6,634 2 View

How many sequences it needed to put in a crown group to calibrate a tree?

17 August 2017 4,155 2 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

How to accurately quantify chitin?

Hi all, I have been working on the quantification of chitin in insect samples and feed for a while but I can notice that the quantification methods (e.g. exposure to HCl, NaOH, and weighing sample...

01 March 2021 1,843 2 View

Can someone suggest a way to prepare slides to observe under confocal microscope for observing fluorescent tagged proteins??

I am growing the cells on coverslips and transfecting the fluorescent tagged protein directly on them. Then i want to observe these cells under confocal microscope. Currently i am just using...

01 March 2021 6,142 3 View

Why does intensity drops as concentration increases?

Is there any reason for decrease in fluorescence emission intensity of HSA,BSA when increase the concentration ?

28 February 2021 3,653 4 View

Quantifying leaking DNA from bacteria - what's the secret?

Hi, all! I need to determine if my treatment causes membrane damage in bacteria (S. aureus and E. cloacae), but I cannot use a fluorescent probe such as PI and similar ones because my compound is...

24 February 2021 2,006 2 View

What are difference between laser diodes, simple light emitting diodes and power light emitting diodes when operated in the visible spectrum ?

I want to illuminate a scene (small space) using LED to capture photographs or videos of some tiny objects inside the space. But am not sure if I should use a Laser LED, or simple LED or power...

22 February 2021 4,240 4 View

Did anyone perform CD107a degranulation assay without the use of inhibitors like monensin?

I am planning to perform a degranulation assay using CD107a antibody. Some resources suggest to use inhibitors like monensin to inhibit the intracellular traficking and acidification of the...

21 February 2021 6,260 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

Interpretation of a fluorescence Emission spectrum ?

Hello, i work with a spectrometer which only render the fluorescence emission spectrum. Until now i just found how to interpret an exitation- and emission spectrum together to generate deeper...

20 February 2021 1,291 3 View

Good day sir/ma. Please, where can I have access to equipment for conducting XRF, XRD and SEM analysis?

I'm using blast furnace slag for stabilizing subgrade soil.

17 February 2021 7,333 3 View