How can I take subsamples of water from a larger sample in a way that allows me to measure the iron content of the subsample?

I learned how to take subsamples with a magnetic stir bar, but I noticed iron particles stick to the bar, and I am having trouble finding a standard method to solve that problem. How can I take a...

04 February 2021 4,778 1 View

I am looking to develop a basic oral microbiome assay. Can anyone advise on culture vessel, conditions and organisms that require minimal maintenance?

I am looking to investigate oral care products with an easy-to-prepare culture of orally derrived microorganisms.

21 January 2021 3,448 1 View

PEI DNA in-vivo transfection concentration?

04 January 2021 6,908 7 View

What would be the recommended color/method for quad-IF?

I'm trying to perform quad-IF staining on frozen tissue sections on a fluorescent widefield (axioplan) microscope. I was wondering what people might suggest for colour/strategy for a co-IF...

13 October 2020 6,863 4 View

How do you remove the tolerance limits when running collinearity statistics in SPSS?

I am using SPSS syntax to determine multicollinearity with predictor variables of interest. When I enter the variables, SPSS is removing some of the variables because the minimum tolerance limit...

02 June 2020 3,639 1 View

How to distinguish different phases on an xrd pattern?

In XRD, how do you distinguish among the crystallized phase, amorphous phase, and a mixture of the two? How will the peak look like in a mixture of a crystalline and amorphous material?

05 May 2020 9,707 7 View

Are there any techniques to embed transmembrane proteins in solid lipid nanoparticles like liposomes or micelles?

25 January 2020 3,991 2 View

Specim FX17 hyperspectral camera/sensor - UAV/drone application?

Hey, I am looking into the feasibility of attaching a Specim FX17 sensor to a multi rotor system. Specs wise it looks possible, sensor is 1.4kg and Matrice M600 max payload is approx 15kg....

16 December 2019 4,169 2 View

Is the calculation of AVE and composite reliability after EFA recommended?

Greetings! The link to the Todd Grande tutorial below demonstrating the calculation of AVE and composite reliability to factor loadings appears to be popular viewing. My question is would you...

08 December 2019 711 4 View

What is the best way to model 9 continuous factors with 2 factors out of the 9 with a non-linear response, i tried using statgraphics, DOE beginner?

Good Day,this is urgent please, i want to use statgraphics trial version to study a part of my work. I am considering different stratified layers in a particular oil reservoir, i considered...

19 October 2019 3,227 1 View

How to compare 2 samples recruited with different sampling methods?

If I want to compare characteristics of 2 groups of patients, one group is recruited from a random sample of the general public while another group is from a sample with a fixed gender (male to...

26 February 2021 3,526 3 View

Do you consider undergoing a structure literature review / Meta analysis and getting numerical findings sort of quantitative method?

I am looking for a classification of the research methods included in literature review papers or Meta analysis ones .

22 February 2021 1,131 4 View

Can I do two kinds of mixed method in explanatory research?

Dear distinguish professors and scholars, I have a research in measuring two kinds: think tank capacity and research impact on policy. Can I do two kinds of mixed methods in order to find, "Is...

20 February 2021 6,897 1 View

How to analyse a (perceptual) study using differing/comparable sets of stimuli?

I plan on running an online perceptual experiment that has, let's say, 100 unique video stimuli altogether. Since these are too many to be rated by every participants, I would like to present the...

15 February 2021 7,444 2 View

How to analyse a split-plot design in stata ?

I have run an split-plot design experiment evaluating the efficacy of a treatment (with 3 whole plots and 4 sub-plots), and I am planning to analyse the collected data in Stata. However, I do...

14 February 2021 7,800 7 View

Can I use a likert survey for criterion sampling in a qualitative study or would that make it mixed methods?

I am doing a phenomenographic study on the reading experiences of avid v. Neutral v. Non-Readers. If I use a likert survey to criterion sample for participants, does that make it a mixed method...

09 February 2021 8,594 3 View

How to create the context-mechanism-outcome configuration (CMOc) in the realist methodology?

In the realist methodology (especially by Raymond Pawson et al), the CMOc is a common structure to explain what works, for whom, in what circumstances, and why? I'm always asked about the...

08 February 2021 2,792 1 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 do I create a categorical variable, level of exposure, and a dummy dichotomous, yes-no, variable for the Harvard Trauma Questionnaire Part 1?

I am using the Harvard Trauma Questionnaire (HTQ) Trauma Events scale (original version) that has 17 items (17 different traumatic events) with 4 response options, indicating 4 levels of exposure:...

04 February 2021 1,509 3 View

How to report path analysis / SEM with Yuan-Bentler correction from R output?

Dear all, I am currently writing my master thesis where I am analysizing my data using path analysis and SEM in R (lavaan package). Now that I like to write up my results, I am struggling with...

04 February 2021 8,993 2 View