R software in fish stock assessment?

More Samuel Amponsah's questions See All

Can any fish taxonomist assist me in identifying this species?

This species was caught from the coastal waters of Ghana. It has the ability to blow itself up just like the puffer or porcupine fish. Despite this unique feature, identification still remains a...

04 May 2018 4,960 0 View

Histamine in smoked fish?

Is there any effect of ash from fuel wood on histamine levels in fish?

01 February 2018 5,330 1 View

Bound water in food chemistry?

Does anyone know how to estimate bound water in food science for estimating water holding capacity?

02 March 2017 1,010 0 View

How to quantify polystyrene microplastic (8 micron) bioaccumulation in fish tissue?

"I have treated adult zebrafish with 8-micron polystyrene microplastic and want to study the bioaccumulation in different organs. Can this be done using hydrogen peroxide digestion followed by...

05 August 2024 853 3 View

Methyl jasmonate preparation ?

How do I calculate the stock solution to apply 100 uM MeJA for 1000 ml of plant nutrient medium ?

01 August 2024 723 0 View

Do anyone knows any book dealing with fish growth/zootechnical performances and somatic indexes in aquaculture?

In the aquaculture and fish nutrition research field, a number of growth and somatic indexes are often used, including specific growth rate (SGR), feed conversion rate (FCR), protein efficiency...

22 July 2024 2,480 4 View

Why do fish have fishy odors naturally ?

Chemical Engineering /Food Engineering

20 July 2024 4,152 4 View

How do I prepare a working stock solution of 14C sodium bicarbonate to get a final activity of 3uCi?

I need to make a stock solution for radioisotopic incubations of freshwater sediments to study dark primary productivity but I have some confusion as to how I calculate the concentration of 14C...

15 July 2024 5,898 0 View

What kind of t-test can I use if I have two variables measured using the same raw data?

I plan to perform a t-test between risk index and leakage values to know if there is a significant difference between leakage values of low, medium, and high risk pipes. However, the data I have...

10 July 2024 6,199 3 View

Is it appropriate to apply the COSMIN guidelines for evaluating the quality of tools used to assess acute postoperative pain?

Hi, I'm a graduate student, college of nursing, chungnam national university in Daejeon. The topic of my thesis is "Quality Assessment of Tools for Evaluating Acute Postoperative Pain." I have...

10 July 2024 3,048 1 View

Chromosomal spreads are shrunken after fluorescence in situ hybridization (FISH), why?

Dear colleagues, We are trying to do FISH on mice PDEC metaphase spreads. We use homemade biotin labelled probes, synthetized using a nick translation kit. For hybridization, initially we were...

08 July 2024 8,687 3 View

Determination of fatty acids in fish?

I measured the fatty acids in the fish, using the internal standard method in the national standard method, I first extracted the fish oil with cable extraction, please ask me how many grams of...

02 July 2024 900 1 View

How many fish otoliths and charophyte gyrogonites should you find in a sedimentary sample weighing 50g in order to be considered enviromental indices?

It's for my thesis on Quaternary costal sediments from Western Greece.

01 July 2024 4,854 0 View