Is there any questionnaire used to study the prevalence of feather pecking in laying hens with different housing systems?

More Mohammed Sallam's questions See All

Is skin yellowness an numerical or ordinal variable?

I have a response variable called skin yellowness, which I will measure via a scored color chart, whereby 1 is pale yellow and 15 is orange. I'm not sure if this counts as an ordinal variable,...

11 August 2024 4,793 1 View

• What the possible Persistent Organic Pollutants and Heavy metals present in fluorspar, sediments, and water bodies around its mining area?

Approximate concentrations are require in compared with the WHO permissible limts

11 August 2024 2,723 1 View

Why Do TDS and EC Increase with Larger Wastewater Volumes, While BOD and COD Decrease?

I have carried out MFC experiments on three different volumes, 50, 500 and 1000 mL of wastewater. Results after MFC treatment shows that TDS and EC are more in larger volumes of water i.e. TDS and...

09 August 2024 9,621 0 View

How to enrich pig excreta for increasing nutrient quality organically ?

Pig slurry is rich in major and minor nutrients. Is there any way to improve / Enrich its manure quality to be used in agriculture organically ? please share your knowledge.

09 August 2024 5,605 2 View

Is it possible to plot the atom-projected band structure using GPAW?

Hi, I'm currently working on a project where I need to plot the atom-projected band structure using GPAW. I've been able to calculate the band structure for my material, but I'm having trouble...

07 August 2024 269 3 View

Unusual intensity drop in some sections of chromatograms in DDA?

Hi, we have measured tryptic peptides using both DDA and DIA method on QExactive. In DDA replicates i saw unusual intensity drops occurring at the same sections of chromatograms in DDA replicates...

07 August 2024 3,218 4 View

Leaf area of tomato ?

Hi How can this equation Ln(LA) = 1.038 + 0.89 ln(X) be applied to calculate the leaf area of a tomato? Can you explain with an example and what is the substitution of Ln and ln?

06 August 2024 2,508 2 View

Why did the authors extrapolate a phenotype that they experimentally proved in one bacterial strain across the whole genus of the organism?

I aim to be as skeptical as possible regarding whether a pair of orthologous genes results in the same phenotype in their different but related bacterial organisms under similar environmental...

05 August 2024 6,787 4 View

How to preform densitometry on SDS-page bands?

I ran a SDS-page of a bacterial lysate and I want to quantify protein concentration in a specific band. I was thinking of using a standards ladder or make some standards are different...

05 August 2024 9,805 3 View

XRD Analysis is showing only Calcium carbonate. It is not showing other compounds. Can anyone help me get the other compounds?

XRD Analysis is showing only Calcium carbonate. It is not showing other compounds. Can anyone help me get the other compounds

04 August 2024 3,019 3 View

Should I remove an item from a scale to raise Cronbach's alpha and McDonald's omega or is it better to leave it if they are both over .7 already?

Hello! I have this scale which had 10 items initially. I had to remove items 8 and 10 because they correlated negatively with the scale, and then I removed item 9 because Cronbach's alpha and...

01 August 2024 4,606 7 View

What should I do in this situation ?

I'm an undergraduate university student conducting research on the effects of internet use on depression and anxiety among undergraduate Ghanaian university students: Mediation role of Internet...

31 July 2024 2,979 3 View

In teaching with Evidence-Based Practices for students with ASD, what are some that can benefit from the use of AI?

I am a student in a master's program for Special Education and I am curious to see what Evidence-Based Practices that are used in teaching individuals with Autism Spectrum Disorder benefit from...

30 July 2024 5,611 1 View

How to retain the a GFP tagged gene expression in stable cell line?

Hello , I established a stable cell line expressing GFP tagged to a centrosomal gene having G418 drug selection marker. I validated the stable line by IFA and Western blotting, results are fine....

29 July 2024 5,007 0 View

How do we pick data for determination of Validation Acceptance Criteria?

Hello, colleagues! There is commenting open for new upcoming edition of USP 1033. Validation target acceptance criteria is now different from what it used to be and it doesn't include Cpm....

23 July 2024 7,292 3 View

How to extract binding energy from pv.maegz file without using Schrodinger?

I have conducted virtual screening using Schrödinger on a database of 17,000 molecules. Unfortunately, I cannot use the system with the Schrödinger license at the moment. I am trying to find a way...

18 July 2024 2,881 4 View

Could someone please help me to understand the role of the quarter-wavelength principle in optimizing the thickness of perovskite solar cells?

How does the quarter wavelength affect the efficiency and light absorption of the cells, and what considerations need to be taken into account when applying this concept to optimize the thickness...

10 July 2024 647 5 View

What are the consequences of violating the code of ethics in research and consequences of breaching ethical principles?

10 July 2024 5,236 0 View

What is the difference between Caputo fractional derivative and conformable fractional derivative?

While working on fractional order derivatives I found the behavior of conformable derivative is different from Caputo fractional derivative. Therefore, I want to know the difference between these...

08 July 2024 4,057 1 View

Good evening, I would like to evaluate the heavy metal content in bird feathers. Can I keep my samples in powder form ?

Good evening, I would like to evaluate the heavy metal content in bird feathers. Can I keep my samples in powder form ? and can I use other tubes than Teflon for digestion?

04 July 2024 158 4 View

C.A. (Kees) Kan

You might contact Prof Harry Blokhuis in Sweden with this question.

Harry Blokhuis

Professor

Department of Animal Environment and Health

Division of Ethology and Animal Welfare

Ethology Unit

Telephone: 018-671627

E-mail: [email protected]

Postal address:

Inst för husdjurens miljö och hälsa, Box 7068