In a OLS regression, how can I perform an interaction when one of the terms follows a quadratic function?

Hi everybody, One of the predictors (A) of my dependent variable clearly follows a quadratic function (A and A squared both significant). I want to see how this predictor interacts with another...

18 February 2021 4,088 7 View

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Hello, I am using Coulomb 3.3. When I try to use the option "Build input from CMT or focal mech. data" I have the next errors: Unrecognized function or variable 'deg2utm'. Error in distance2...

18 January 2021 4,487 4 View

What RNase-free solution can I use to transport fresh mice brains?

I will be having freshly isolated mice brains shipped. However, these brains will be eventually used for RNA isolation and immunofluorescence staining, so it is critical that I have them delivered...

07 October 2020 1,343 3 View

What is the recommended maximum length of listening tasks for primary school children?

I would like to know if there are studies that investigated how long primary-school children are able to concentrate on a listening task. Are there official recommendations for a maximum task length?

20 September 2020 1,934 7 View

When does speaker normalization develop in children?

I am on the research for studies that investigate speaker normalization in children. For example, I wonder whether children around the age of six years can already normalize acoustic differences...

16 September 2020 9,907 7 View

How can I prevent Ngn2 neuron-astrocyte co-cultures from peel off the coverslip?

Hello everyone, I've been co-culturing hiPSC-derived Ngn2 neurons with human fetal astrocytes, and at the time of grabbing the coverslip from the plate (24 wp) the cells peel off the coverslip. I...

03 September 2020 2,947 1 View

How can I get individual rarefaction on PAST4 (Paleontological Statistics software)?

Hi, I'm currently working with PAST 4.01 and I have my data organized on a table of 4 columns (treatments) and 45 rows (different bacteria genders) with the amount of genders found in every...

31 March 2020 1,914 1 View

Benjamini- Hochberg correction, which p value use?

We have carried out 6 repeated measures ANOVAS: 2 (group) X 4 (image categories: pleasant, unpleasant, food and neutral) for 3 physiological measures (blink, corrugator and zygomatic) and 3...

20 November 2019 3,451 3 View

Is anyone interested in evaluating the antibacterial or antifungal activities, or the toxicity of their new nanomaterials or nanoparticles?

In the Nanobiology Laboratory we are looking for international collaborators interested in evaluating the effect of the nanomaterials synthesized by them, in different model organisms, prokaryotes...

06 November 2018 1,854 7 View

What is the minimum amount of seawater necessary to obtain RNA signal?

13 September 2018 5,730 2 View

Precipitate after adding laemmli buffer to protein solution containing Potassium Acetate?

Hi, I am running a size exclusion chromatography experiment with a buffer containing Potassium Acetate as a salt. I analyse these fractions through SDS-PAGE. After boiling my SEC fractions in...

01 March 2021 2,622 3 View

How to make fractions of chloroform extract of plant, using seperating funnel?

28 February 2021 8,466 2 View

How to calculate the fraction metabolized of a drug by an enzyme using clearance(ml/min) values of the metabolite formed?

I am trying to find the fraction metabolized of a drug by CYP and UGT enzymes. I am unable to get the values of fraction metabolized (Fm) directly from the literature. Can we calculate the Fm of a...

21 February 2021 5,379 2 View

Is my GFAP staining in right position?

I was differentiate hESC to astrocyte. In the second week of differentiation, I stained my cell with s100beta and GFAP. I expected that the staining site of GFAP would come from the cytoplasm,...

15 February 2021 8,982 1 View

How can I calculate volume fraction of MWCNT from a nano hybrid composite ?

I am adding 0.1wt percent MWCNT to glass fiber epoxy composite and want to determine the volume fraction of the MWCNT from this composite but I don't know how to calculate it. can anyone help me...

09 February 2021 8,883 3 View

Fractional derivative users, are you on the same page with me on the validity of the fractional order parameter, say alpha?

Taking a fractional ODE problem as an example. It has come to my attention that if the fractional order parameter is in the interval (0,1], many only presents results for alpha=0.9, 0.99. I saw...

08 February 2021 9,671 3 View

How should I go about evaluating cytoplasmic and nuclear Arginase-1 activity?

Hello! I've stained some bright field Arginase-1 Hematoxylin slides, but I'm having a hard time finding any computed histology predicates for evaluating the intensity of the cytoplasm verses the...

03 February 2021 3,039 1 View

Is there any protein soluble in oil?

Hello, I am looking if proteins or protein fractions soluble in oil exist? For food application Thank you for your help

01 February 2021 2,103 3 View

How to extract RNA from brown adipose tissue(BAT)?

30 January 2021 6,610 3 View

Does someone know which structure could exit the olfactory bulbs at their antero-dorsal top ?

Hi people, I am studying bat brains through endocranial casts and I cannot identify which structure could be present in sort of a canal located dorsally to the cribriform plate. It is like...

27 January 2021 797 6 View