Can random sampling have inclusion criteria?

As random sampling means that everyone in the population have an equal chance to be chosen, can it have inclusion criteria? My research participants have been chosen based on the inclusion...

26 February 2021 6,905 10 View

Hye All, Greetings, How can i get surface run off water data?

this is for my thesis project, so this is the title of my thesis, the effect of land use on hydrological components in Muar, Johor, Malaysia any ideas, guidance, and suggestions all? Thank You, :)

02 February 2021 265 5 View

What is the difference of FTIR for functional properties and structural properties of protein?

I need to send my sample to outsource laboratory and how can i tell them that i want to run the FTIR for structural properties of protein? is there any differenece between FTIR for functional...

15 January 2021 8,992 1 View

How to create suspended particles flow and simulate distribution in a chamber using CAD software?

Allow me first to apologize in advance for the long post. I have tried to keep it right-to-the-point as possible!. Objective To simulate suspension of solid particles using CAD software/create...

12 January 2021 6,389 2 View

What's the correct way of treating ordinal variable as continuous in regression?

08 January 2021 920 16 View

Does low pHPZC (Zero point charge) indicates higher negative charged surface ?

I found that, there is a difference in pHPZC value when higher impregnation ratio of acid on adsorbent surface. Lower pHPZC value when higher ratio of acid impregnation and adsorption performance...

05 January 2021 7,224 3 View

Why do I see many vacuoles on my cancer cells?

I am currently growing BICR31 cancer cells for conditioned media collection, and as I passaged it I have seen many bubbles/vacuoles - like structures. Cells were healthy during the first split...

05 January 2021 2,320 5 View

How can be the Virus COVID-19 become mutation?

The current situation the virus become mutation, but there were information that zero percent case in Wuhan?

31 December 2020 2,457 4 View

Why does activation process called as activation? what does the term means actually?

I'm referring to activated carbon activation. Activation process does increase the surface area and functional groups content in activated carbon compared to biochar and raw biomass. But I'm...

30 December 2020 6,514 1 View

What is the good water absorption value for construction materials (brick, mortar etc.)?

According to many construction standards such as ASTM, a good construction material should have a water absorption value within 20%. However, if we compare with many water absorption values (from...

26 November 2020 8,538 8 View

How to improve the buffer capacity of sea water?

Hello everyone I would like to improve the buffer capacity of seawater (pH ~8) in order to dissolve as much CO2 as possible without dropping the pH below 7.5 (a range between 7 - 7.5 is...

17 February 2021 2,797 2 View

How can Sea water impact the hydrodynamic size of Nanoparticles differently than the same Sea water if it is autoclaved?

I am using the same sea water as autoclaved as well as non-autoclaved after adding the nanoparticle. I am getting different Hydrodynamic size for the same nanoparticle.

06 January 2021 3,184 3 View

Which configuration of seawater treatment is better?

Hi world, I have a curious question about desalination of seawater. Since seawater contains a alarming amount of suspended solids and salt (35 ppt). Which of these configuration is more viable...

03 January 2021 2,383 2 View

Could u help with different techniques installed across the world to prevent jelly fish ingress problems in sea water intake syts desalination plant?

jelly fish ingress is a major problem affecting the sea water intake systems leading to plant outages in power plants and desalination plants. can anyone through some insight on installed and...

15 December 2020 6,643 4 View

How can sea water be used as an input for green hydrogen production?

If you extract sea water, and filter it, would it be suitable as an input for green hydrogen production? From an electrochemical perspective, would this be the only process step required?

13 December 2020 2,665 8 View

What is the most controllable (marine) bacterial culture you can cultivate in simulated seawater?

02 December 2020 6,796 3 View

Why only less than .3 mm sieved samples are considered in microplastics observation???

Basically, I was looking for the laboratory method for microplastics observation from a seawater sample and beach sample. Most of the cases, they followed some criteria to get a precise amount of...

09 November 2020 8,485 6 View

Hi I want to ask about electrolysis of seawater that using copper and graphite electrode to get hydrogen gas is it better to use copper or graphite?

I already do the research about electrolysis of seawater using the graphite-graphite and graphite-copper to compare each electrode to see which one can produce hydrogen gas better. The data that I...

29 October 2020 3,493 3 View

What is the impact of Total Organic Cabon (TOC) present in saline water on membrane fouling?

In all our seawater samples taken from 1 km (approx) from beach showing TOC between 4 to 7 mg/L. Would like to know how much this TOC will impact on fouling/biofouling of desalination membrane....

15 October 2020 3,816 3 View

How can i increase the pH of synthesic sea water to 12?

How can i increase the pH of sea water to 12? Because when i adding NaOH to seawater the pH does not go above 10 and begins to precipitate.

12 September 2020 564 9 View