I would like to know any methods and steps could be use to treat waste containing mixture of alcohol solvent, oils and glycerol?

I'm not sure the steps to treat wastewater containing mixture of alcohol solvent, oils and glycerol. do we neet to separate before further treatment.

27 December 2020 6,058 6 View

Which is a lucid standard comprehensive book to guide on psychological scale construction and its standardization?

02 March 2021 7,082 3 View

Looking for genomic DNA extraction kits from mouse tissue (centrifuge-based, not spin-column)?

Hello. I am looking to extract genomic DNA from mouse brain and lungs and I need a kit that is not spin-column based because I need to scale up the solution amounts for 400mg tissue (most cap at...

25 February 2021 155 2 View

How do I understand the relationship of age and the answers on Likert scale?

Hi people, I want to see the relationship between 4 age categories and Likert scale questions on SPSS, which method or test is the best to find that out? To be more exact, I want to measure if the...

10 February 2021 2,241 3 View

Where can I find the Affiliate Stigma Scale developed by Mak and Cheung?

Need the scale for a dissertation. Would be better if I could get it for free since my work is not funded. I need the English version of this scale.

09 February 2021 4,022 3 View

Any recommendations for open-source survey form builder, which has option for semantic differential scale questions apart from Likert scale?

Asking this as Google forms doesn't allow multiple items in a semantic differential format.

04 February 2021 5,869 4 View

Can I add a neutral option in a 4-point Likert scale?

Hello, I want to use a motivation scale with my students (secondary school) for my research, but the scale is in a 4-point Likert style with no neutral option (Certainly true - True - Not True -...

04 February 2021 4,757 13 View

How do I scale up a column for preparative isolation/purification from analytical conditions in HPLC?

What protocol should I follow to determine optimum separation conditions using an analytical column in an HPLC system?

03 February 2021 7,288 3 View

Hello friends, happy evening !! I am just wondering if you would know where I can find the (ALTS) altruism scale by S.N.Rai and S Singh to download ?

ALTS is an altruism scale developed by S.N Rai and S.Singh.

02 February 2021 7,243 2 View

How is it possible to rank variables using Likert scale?

Hello Everyone, I have a questionnaire of a 3-point Likert scale for an overall evaluation for a service, and several detailed attributes evaluation of that service. For example: Overall...

31 January 2021 9,612 8 View

How can I use nonparametric tests for Likert scale?

I have 32 items 5-points Likert scale to capture 4 different theoretical constructs. I am going to compare two independent groups. The Liker scale is treated as ordinal. - Construct 1=...

30 January 2021 8,482 14 View