Is there any phosphates sensor (or total phosphorus) for online monitoring of the lakes?

We need to monitor surface waters in terms of nutrients and algae content. We are building up an on-line in-situ monitoring system for early detection of cyanobacterial blooming and toxicity into...

27 February 2020 9,612 7 View

Would you be interested in hosting a Fulbright Visiting Scholar?

I would like to apply for a Fulbright Visiting Scholarship, but I need a colleague who would like to host me in a U.S. University. My research interests include Special and Inclusive Education,...

08 October 2019 3,089 3 View

Best method for dna extraction from honey ?

hello, what is the best method for extracting bacterial dna from honey? thank youu

19 February 2019 131 6 View

Does anyone have any experience with RET immunohistochemistry?

Does anyone have any experience with RET immunohistochemistry? I am interested in staining nerves in skin. Thank you

09 November 2016 7,648 2 View

Is there a way to increase the sensitivity in the "do it yourself/ready-set-go" kits?

19 October 2016 8,696 3 View

What demethylating reagent do you suggest?

I would like to demethylate a substrate which carries one aryl methoxy group and heterocycle moieties. I tried some methods by using HBr and BBr3 but they didn't give any demethylated product. My...

03 August 2016 4,711 19 View

Is anybody working on architectural spaces and/or urban places or neighbourhood projects aiming at well-being of people with dementia condition?

02 August 2016 7,382 8 View

Can I use boron tribromide for the demethylation of a methoxy group on a compound which carries also a primary arylamine?

Do I have to protect the amine?

28 July 2014 3,785 3 View

Imaging extracellular membrane proteins

I want to visualize a protein which will reach the plasma membrane and localize on the extracellular space while performing live cell imaging. Is there a way to have a tag, which will only become...

03 November 2013 582 9 View

When using Autodock Vina is there any way to exclude an allready existed ligand from your protein?

I am currently using an Autodock Vina wizard with PyRx.

10 July 2013 9,534 6 View

What are some alternatives to the Self-Directed Learning Readiness Scale (SDLRS) developed by Dr. Lucy L. Guglielmino?

The Self-Directed Learning Readiness Scale (SDLRS), also known as the Learning Preference Assessment (LPA), was developed by Dr. Lucy M. Guglielmino in 1977 to measure learners' attitudes of and...

15 February 2021 3,095 4 View

How to calculate response rate if the number of eligible respondents is not available?

Hi All, I am carrying out an international research with clinicians (speech-language pathologists/ therapists). International professional associations will be distributing the questionnaire link...

02 February 2021 5,306 3 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 do you multiple impute item scores and perform a linear regression on factor scores?

I am developing a questionnaire and first performing an exploratory factor analysis. After I have the final factor structure, I plan on regressing the factor scores on some demographic covariates....

18 January 2021 883 8 View

How do I access Domestic Violence Attitude Scales or find them for free?

Hi, I'm a postgraduate student currently starting up a research project on attitudes towards domestic violence (DV). The study will aim to compare cultural differences between attitudes and...

31 December 2020 781 3 View

What is the best Quality of Life questionnaire for chronic patients?

Hello! I am looking for a SHORT questionnaire/scale to measure Quality of Life in chronic patients (e.g. fibromyalgia, or multiple sclerosis). Ideally, validated for English and Spanish speakers....

22 December 2020 9,962 4 View

Is it always mandatory to report and test the validity and reliability of a newly developed questionnaire?

Hello everyone! Currently, I am doing an observational, cross-sectional study on knowledge, atittude, and practice towards thalassemia in Indonesia. My area of interest is in population studies....

16 December 2020 3,725 16 View

May I use Minimal important difference (MID) in non-normal distribution?

MID is based on Standard deviation, consequently, I should not use it in non-normal distribution. Am I right? If yes, which test may replace MID?

13 December 2020 7,573 3 View

How to do Factor analysis for extracting items - side by side column questions ?

Hi everyone, I have side by side questions in the questionnaire. There are total 29 questions. Each question has more than 11 items and three side by side columns to capture different contexts...

02 December 2020 5,499 3 View

How best is to compute the internal reliability of a CPTED elements scale which is made up of binary coded responses?

I develop a CPTED elements audit and site assessment checklists questionnaire consisting of about 43 questions to be answered in the (yes=1, no=0) setup. I want to compute the internal reliability...

19 November 2020 6,286 11 View