Which is better in plastic pipes or steel pipes in fish projects What is their effect on fish?

More Salam Zidane Khalifa's questions See All

Can a genetic analogy be made between tilapia and carp?

Is it possible to conduct a genetic observation between tilapia and carp Or there are differences between the number of chromosomes The purpose of the sampling procedure is correct to improve the...

04 May 2018 3,308 1 View

What actions can we take to control the behavior of children in order to develop a generation of leadership, science and culture compared to previous?

What actions can we take to control the behavior of children in order to develop a generation of leadership, science and culture compared to previous centuries?

03 April 2018 8,542 6 View

Are there studies on industrial kidney innovation? Or is there a scientific industrial kidney and what is its method of operation?

02 March 2018 9,346 4 View

Which is better in plastic pipes or steel pipes in fish projects What is their effect on fish?

02 March 2018 4,924 11 View

What are your ideas about the work of the machine to rotate water in fish ponds without the need for an electrical or oil source? Your opinions?

I would like to hear your opinion about the mechanism of making a machine that is used to rotate the water in order to raise the oxygen level in lakes and ponds? What are your ideas?

02 March 2018 1,994 8 View

What are the reasons that led to the failure of the closed system used in fish breeding in most Arab and foreign countries?

02 March 2018 9,083 8 View

Who has the book of animal production?

01 February 2018 2,587 0 View

What are the reasons behind the low levels of the Tigris River? It is causative What are your solutions?

01 February 2018 4,454 0 View

How to build an ongoing relationship on love and respect between spouses and their inheritance to children Your opinions?

How to build an ongoing relationship on love and respect between spouses and their inheritance to children Your opinions

01 February 2018 1,857 8 View

What are the effects of communication on the mind or health in general and the impact of addiction to social media?

What are the effects of communication on the mind or health in general and the impact of addiction to social media

11 December 2017 3,565 0 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View

Why Austenite grains in steel show much more twinning than ferrite grains?

It is oftentimes said to be a distinctive metallographic trait that differentiates a fully austenitic and a fully felly ferritic steel without etching that might distinguish between two. Why...

02 March 2021 728 2 View

How Can I bring as much common elements in steel as possible to calculate stable phase(s) in OpenCalphad?

As I was tweaking step-by-step OpenCalphad6 Macros step1.ocm involving phase and thermal property calculation of a High-speed steel, I could not incorporate more than 6 elements in the steel...

01 March 2021 8,840 1 View

I need to accelerate corrosion in steel parts that are used in a salt-water environment. Is there a technique for doing so?

I have a structure that employs d-ring swiveling tie-downs that corrode during use and become "frozen". I have sample swivel assemblies that I wish to corrode to see if I can free them using one...

01 March 2021 3,739 3 View

Why is my platinum counter electrode getting dirty during electrodeposition?

I am conducting anodic electrodeposition of MnO2 onto a stainless steel substrate, using a platinum strip as a counter electrode. This is done galvanostatically, with the current held between 5...

27 February 2021 1,829 3 View

Is the a way to contol flow (Flow velocity) without impacting pressure value?

I have a pipe with 10 mm in Diameter and 2 bar pressure, the fluid velocity is 200 m/s, the fluid is air. is there a way to reduce velocity without affecting the pressure value?

25 February 2021 7,187 3 View

Steps to calculate activation energy by coats & redfern method?

I'm a chemistry student and I'm researching the kinetic degradation of mixed plastic waste. I'm having trouble calculating the activation energy by the coats & Redfern method. The data that...

24 February 2021 974 1 View

What kind of steel moulds are used for hot pressing metal powders?

My main concern is that the metal powders should not weld to the mold surface and I should easily be able to eject out the pressed samples. I am looking for alternative for graphite moulds. The...

22 February 2021 2,965 4 View

What are effects of steel jacketing on flexural strength?

Dear all, If steel jacketing is used to retrofit a reinforced-concrete (RC) column, can we use it to improve flexural strength? I understand that we leave gaps between the ends of the jacket and...

22 February 2021 1,906 5 View