Is it essential to get ethical clearance to conduct a questionnaire survey on nutritional status of the children?

one of my colleagues doing research and collecting data on nutritional status of children using questionnaires and direct observation. whether ethical clearance certificate is needed for this study.

01 February 2018 6,152 10 View

How can we differentiate the sodic (Na) soil and alkaline soil?

does the sodicity (high sodium in water or soil) and alkalinity are different?

11 December 2017 1,571 1 View

Are there any relationship between water temperature and the presence of heavy metals in water?

trying to explain the relationship in the lagoon water systems under water quality studies

10 November 2016 6,235 0 View

How to calculate the total organic loading rate (TOLR) in terms of chemical oxygen demand (COD)?

03 April 2016 3,246 12 View

Is it worth to publish our research paper in Online international journals?

there are several online journals are emerging during these days. without having impact factors

07 August 2014 406 0 View

Is it possible to estimate the runoff from the residential area to the river using rainfall data and land area?

I'm looking to estimate the runoff as part of my research study (PhD) by collecting the data on daily rainfall and land area of that particular place.

02 March 2014 3,816 6 View

CALL FOR PAPERS FOR 2nd INTERNATIONAL SYMPOSIUM ON AGRICULTURE 2019 , Eastern University, Sri Lanka

Faculty of Agriculture, Eastern University Sri Lanka is organizing the 2nd International Symposium on Agriculture (ISA 2019). Date : 9th January 2019 Venue : Nallaiah Auditorium, Eastern...

01 January 1970 8,933 2 View

What is the most Operating System (OS) which can be INSTALL on Tiny hard devices like Raspberry Pi (RPi) hardware ?

I'm targeting to deploy a mesh network and manually configure MANET routing protocols. I'm preparing scenarios, architectures, and hard devices needed to do that. Are there some step-by-step...

03 March 2021 1,931 5 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Is there a classification scheme for rock cavities or caverns with respect to their size and shape?

The range of forms and sizes of cavities in rock is very big. Is there a classification scheme for rock cavities regarding their size and shape?

02 March 2021 4,511 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 View

Is there a powerful system for the security of the systems distributed on IoT systems?

Is there a powerful system for the security of the systems distributed on IoT systems?

02 March 2021 3,858 10 View

Which is suitable for use with Python? MySQL or SQL Server?

Which is suitable for use with Python? MySQL or SQL Server? What is your suggestion?

01 March 2021 3,422 3 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

What is the state of the drug inside solid lipid nanoparticles (SLNs)?

I am a little confuse with the mechanism of solid lipid nanoparticles (SLNs). The main point of encapsulating drugs into SLNs is because some drugs have low solubility in water. Therefore, SLNs...

01 March 2021 3,703 3 View

Why is the sum of the elements in a row in a Q matrix equal to zero?

When explaining substitution models, the substitutions are expressed as Q matrix. Why is the sum of the elements in a row zero?

28 February 2021 3,864 3 View