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

Why is the TMB substrate turning blue without being in contact with the sample and in the dark?

Hi everyone, last time I was doing an ELISA without exposing it to the light and before I added the substrate it was turning blue. Do you have any idea or suggestion of a better substrate?, the...

03 January 2020 1,294 7 View

Hello. Does XPowder has capability to carry out Rietveld refinment? Where can I find it in the software?

Hello XRD experts. I am getting acquainted with analyzing XRD data using XPowder. Does anyone know whether XPowder has the capability to carry out Rietveld refinement? If so, where do I find in...

02 January 2020 1,162 2 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

Where can I buy olfactometers for entomological use?

Good morning, I need to know where I can buy olfactometers, whether in y shape or four ways for entomological use, the idea is that in the odor chamber small samples can be disposed (essential...

11 January 2019 2,227 4 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

Up to what extent website personalization can help in creating urge to buy impulsively?

Up to what extent website personalization can help in creating urge to buy impulsively? The digital transformation is making most of the organizations to go online and start doing business through...

09 February 2021 4,430 6 View

Looking for help in writing my research proposal ?

Looking for help in writing my research proposal in the following areas : HRIS / HR / Change management / Remote work Please get in touch with me if that sounds like your expertise. Thank you very...

08 February 2021 5,434 4 View

How to best engender critical thinking in K-12 education?

From my observations, there appear to be three principal avenues to engender critical thinking in education K-12: debate; mathematics, and science. For some students, all three avenues are...

04 February 2021 9,605 7 View

Does the Parcelmouth library include functions to calculate zero crossing rate, short term energy, spectral rolloff, and spectral flux?

I am performing sound signal processing for speech, heart, and breath sounds for a project. Our software already uses the Parcelmouth library for some processing features, so I would like to...

10 November 2020 6,261 1 View

How to defend against the reviewer's "not enough trials" objection (non-parametric observed power issues)?

Hi everyone, we need some help with a request from a reviewer. Here's the issue: In our study we investigated the impairment in the ability to recognize facial emotions when a facemask is present...

05 November 2020 1,238 18 View

Karl Marx vrs Adam Smith, can you see the market illusion associated with each model?

If there are sustainability gaps, then there are market illusions as well as broken circular economic structures. Hence there is a market illusion associated with red socialism/Karl Marx and with...

15 October 2020 1,538 8 View

How to personalize math learning according to profiles?

Hello, I am interested in the personalization of learning based on profiles, more specifically in mathematics. Do you know any relevant references? Thank you

11 October 2020 4,473 0 View

No title

07 September 2020 6,086 2 View

Any authors you can recommend that can enlighten me on how to apply philosophical assumptions to my study?

Chosen paradigm is interpretive

27 July 2020 5,384 3 View

Are there examples of sounds that cause an adverse physiological reaction when heard?

I am collecting examples of highly unpleasant sounds that cause an adverse physiological reaction when heard; I call these Auditory Noxious Events. Two such examples are (1) the sound made by a...

16 April 2020 6,842 24 View