What colour is a resorufin solution at pH < 6.1?

The redox dye resazurin (dark blue) can be reduced in aqueous solution at pH > 6.1 via resorufin (pink) to dihydroresorufin (colourless). What colour is the resorufin solution at pH < 6.1?

21 January 2021 8,442 2 View

We use Thermo Scientific Superfrost plus gold coated slides. Why our cryo sections of dry fruits do not stick to the slides?

We use Thermo Scientific Superfrost plus gold coated slides. Why our cryo sections of dry fruits do not stick to the slides?

13 January 2020 1,215 1 View

My mysterious red dye may not be neutralized before HPLC/MS as it is only stable between pH 12.5-12.9. Who could help with equipment tolerating pH13?

More information in https://www.chemistryviews.org/details/education/10821368/150_Years_Alfred_Wohlk.html

04 July 2019 1,409 1 View

Are smaller insect species more sensitive to residual insectides?

Alarming declines of insects elicited a vivid public debate, particularly in Germany (#Insektensterben), but also in many other countries (see...

06 September 2017 7,975 4 View

Someone knows a company that offers gene synthesis in expression plasmids for use in plants?

16 May 2016 8,212 3 View

Which flower signals are honest?

There are some reports about honest floral signals, e.g. flower colour change in many flowering plants correleted to nectar production, size of Dalechampia bracts indicating the size of a resin...

25 April 2016 1,418 5 View

Which pan trap colors are attractive for bees?

Dear All, I want to learn about pan trapping of bees and the most attractive colours. Does anybody know published spectral reflectance curves of pan trap colors? Can anybody explain the term...

08 March 2016 7,710 44 View

How does flower suntracking correspond to bee foraging behaviour?

Many flowers show heliotropism and the flowers are sun tracking. The discussed benefits of sun tracking flowers are heating up the flowers for better pollen germination and seed production, and...

26 January 2016 9,316 5 View

Does it make sense to compare linear regression slopes in the Murmansk region (Russia) using air temperatures from gridded E-OBS data?

12 June 2015 8,483 14 View

Why do some researchers neglect multiplicity in the calculation of statistical significance?

14 February 2014 786 3 View

How do I build a cohesive discussion section?

Hi all, I have a question in regards to my discussion and conclusion section in regards to my master thesis. I am currently a few days before the deadline and starting to question...

05 December 2020 7,200 2 View

What are first, second and third cracks (red, green&blue color outline) in crack pattern of RC beams in ANSYS APDL?

Hello everyone, Can anyone kindly explain what is mean by three different colours of cracks in RC beams in ANSYS APDL and the features of first crack (red colour outline) second crack (green...

17 November 2020 2,512 1 View

What are the major steps in the antimalarial screening of drugs?

Outline the four major steps in the antimalarial screening of drugs.

22 September 2020 7,996 1 View

What's the best kit to test plasma corticosterone and ACTH concentrations in mice ?

Hi, I'm planning to collect plasma from the tail of anesthetized mice. I am looking for the best method to determine corticosterone and ACTH concentrations in these samples ? Thank you for...

07 September 2020 8,885 4 View

I presented an integrated model for marketing management, Would you like to give an opinion on my model?

The model outlines the basic stages of marketing management, the basic foundations, and supporting factors to achieve the model's goals.

07 April 2020 830 11 View

Image processing protocol for zebrafish myelin?

I'm relatively new to microscopy imaging analysis so I'm seeking some help! I have z-stack images (.czi files) from zebrafish using a Zeiss LSM 880 confocal microscope at 40x water immersion...

29 March 2020 2,900 2 View

In ImageJ, is there a way to edit area manually?

Hey all! I'm new here and to ImageJ. I work with blueberries, mainly with micropropagation. Our group has a desire to measure the surface area of the plants without removing them from test tubes....

22 March 2020 3,356 3 View

Getting stuck with DLM package in R?

Hi, I'm analysing time series data using a few different methods, including Dynamic Linear Models. For such I am using the dlm package in R. However, I don't feel like I really understand it and...

03 March 2020 1,135 3 View

fluro-labelled myelin?

Any suggestions on a good fluro dye one can use, to label Myelin with, to study internalization of myelin into cells??

15 January 2020 6,394 1 View

Statement of Purpose for PHD admission?

What is actually a SOP: Statement of Purpose? And what are the general outlines to follow while writing it? Especially in the field of GIS/ Remote sensing/ Big Data. Do share your experiences or...

11 December 2019 5,674 5 View