Insect Lipase Activity?

Hi everyone! My name is Nacho. I am trying to assay lipase activity from insect midgut supernatant, and I have some problems and some doubts about it. I do not have the pH-stat. Thus, the...

22 November 2020 5,595 3 View

Is Tetrabutylammonium hydroxide Mass Spectrometry compatible?

Hello forum, I would like to know if TBA.OH is volatile in mixtures of acetonitrile or methanol. I want to analyze peptides that were previously dissolved in TBA.OH-conatining solution, but dried...

05 October 2020 6,936 3 View

Any good manual for phenomenological approach to sustainability?

I'm thinking about a turn from my ethnographic approach to a phenomenological approach in the study of sustainability and forest preservation. However, I didn't find any good manual to design and...

06 July 2020 9,618 1 View

Can RL agent's decision be explained after inference?

I would like to know if there is a method, or sets of method that can explain why a RL agent has chosen certain decision, after the agent has been trained. I'm not looking for different RL...

23 April 2020 151 3 View

Can you desalt peptide digests with high pH RPLC?

Hello! I am working with some materials that require desalting of the peptide samples prior testing. My samples contain a salt of potassium. With a standard sample, I would use R3 or C18 resins...

19 January 2020 6,772 3 View

Methods available to calculate animal density by means of camera trapping?

We have two large camera trap data sets (tropical and temperate forest), which I would like to use for estimating animal density. Which are the available methods? Strengths and weaknesses? Thanks

16 January 2019 5,879 3 View

I have to remove RNA from DNA samples. Using a RNAase A (4 mg/ml), which volumen do you recommend to use?

I have some sample that I have to re-purify and some samples to isolate DNA de novo. In both cases I have to use RNAase to remove RNA. I tried with 1.5 ul of RNAase A (4 mg/ml) but the RNA is...

13 December 2018 860 2 View

Available shapefile of marine sea temperature hotspots?

Dear researchers, someone has a shapefile of marine sea temperature hotspots worlwide desribed in Hobday & Pecl (2014). Thanks in advance for sharing. Regards Ignacio

17 October 2018 7,500 1 View

Which tail occluder size is appropiate for C57 mice?

We're planning to measure non invasive blood pressure in C57 mice. Weight should be around 20-40 Grams. There are 2 sizes available at Kent Scientiffic: small and extra-small... they're both...

26 June 2018 9,849 1 View

Seminal papers about digital platforms?

25 June 2018 6,246 2 View

What is your perception on using visual analysis or quantitative approaches to evaluate data from single-case research designs (n of 1 trials)?

Results of single-case research designs (i.e., n-of-1 trials) are often evaluated by visually inspecting the time-series graph and computing quantitative indices. A question our research team is...

03 March 2021 687 1 View

How to approach CFD simulation results of a flow past a cylinder?

Hi all, I'm doing a transient simulation of flow past a rectangular cylinder close to the free surface. As far as I'm concerned, the common practice is to discard the initial stages of the...

25 February 2021 1,348 3 View

How to visualize stress in a coating defined by "Skin" in Abaqus?

Hello All! I'm trying to model a contact between a coated substrate and a tip in Abaqus. The coating is ultra-thin compared to the geometry of the substrate. So I defined the coating using the...

16 February 2021 1,594 3 View

How to perform Cox proportional hazard analysis or Kaplan-meier survival analysis in SPSS?

At first please see the attachment. This experiment was performed for a period of 7 days (n=100). After 7 days, we found different level of survival rate (%) for each treatment. Now, I want to...

15 February 2021 9,145 2 View

How to calculate visual angle of a visual stimulus?

I am currently trying to figure out how to calculate the visual angle of some visual stimuli I used in an experiment. I think I have all of the information I need to calculate this. One is a...

15 February 2021 3,189 2 View

Hyperspectral Image : open, visualize, process in Python?

I am looking for a tutorial or course to learn how to open, visualize , process hyperspectral images in .hdr , .raw format using python. Any recommendation for a tutorial is appreciated ? Thank...

08 February 2021 7,896 3 View

Recommendations for sample size in visual qualitative research (using children's drawings)?

Hi everyone! Asking for a little help, if I may. I am working on a research project, where I aim to analyse children's drawings about Covid-19. I am fairly new to using visual data in qualitative...

07 February 2021 9,530 3 View

How To Properly Show Displacement Versus Force For A Capacitive Parallel Plate With Multiple Electrodes in COMSOL?

I want to determine through simulation in COMSOL the displacements due to applied forces. The sensor has 4 bottom and 4 top electrodes that do not complete align along with a bump on top which...

21 January 2021 6,856 3 View

Inexpensive eye tracking hardware + software solution?

Hello, I am starting a project that will require an eye tracking device. I've seen eye tracking hardware + software solutions that are $10,000+ so I am hoping to find one that is significantly...

18 January 2021 8,121 12 View

Is it possible to combine two continuous variables into one categorical variable in order to create a dummy in SPSS ?

As background, in my model, my independent variable is visual clutter which has two conditions (higher visual clutter/ low visual clutter) and the conditions measure the amount of visual clutter...

13 January 2021 4,760 4 View