What are the economic benefits of recycling PET, Papers, Glass, Metals, and etc.?

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Which methods could be used to determine the specific surface of fixed-bed and moving-bed packing media?

The methods/devices which could be used to determine the nominal and effective specific surface of fixed-bed and moving-bed packing media which have been used for biological wastewater treatment...

01 February 2018 5,172 2 View

What do you think can be done to help solve the problems of environmental pollution?

Stopping environmental pollution is important for the survival of our planet, and even more importantly, the health and well-being of the people who depend on it. What do you think can be done to...

08 September 2017 912 11 View

Does anyone knows the ideal thickness of growth biofilms in bio-carriers of MBBR process?

MBBR technology employs thousands of polyethylene biofilm carriers operating in mixed motion within an aerated basin of wastewater treatment plants. Each individual bio carrier increases...

07 August 2017 5,341 8 View

What are the substantional challenges of global solid waste management?

Rapid economic growth, urbanization and increasing population have caused (materially intensive) resource consumption to increase, and consequently the release of large amounts of waste to the...

07 August 2017 9,183 12 View

Does anyone familiar with nitrogen-based biocarriers which have been used in the MBBR process?

Dear respectful researchers Could you please provide me some information regarding the nitrogen-based bio-carriers which have used in the MBBR process. What are the main differences and possible...

07 August 2017 8,540 3 View

What are the most limitations and disadvantages of Membrane bioreactor (MBR) process ?

Dear Respectful researchers I need the information regarding to limitations and disadvantages of the MBR process in treating high industrial strength wastewater. There are some limitations such as...

07 August 2017 6,487 10 View

What is your opinion on the role of metabolomics in exposure assessment science?

Metabolomics, the study of small molecules in biological systems, is the comprehensive analysis of all metabolites of an organism. It has the potential to improve exposure measures and delineate...

01 January 1970 1,951 1 View

How to disaggregate country data into city ones?

I'm using a number of indicators in my research which are not available at a sub-national level. Is there a reliable method for disaggregating the country data into city ones? (preferably with a...

16 February 2021 6,861 3 View

How do you obtain ASI (Annual Survey of Industries) plant identifiers, to create a panel data?

Dear all, Is there anybody who has worked with ASI (Annual Survey of Industries) Firm-Level data? I have extracted the data files with STATA, and now I need help with creating a panel for...

11 February 2021 876 4 View

What could be an interesting topic for a bachelor's thesis in a finance/marketing/computer science field?

Hi everyone! I would like to write my bachelor's thesis on a topic that's currently relevant in the sphere of finance, marketing or computer science (or if it's possible a topic concerning all the...

08 February 2021 1,300 12 View

How to find the independent research projects (paid) in the field of economics of education?

I am an independent researcher in the field of economics of education. need guidance the sources ( like website, forum ) to find the independent research projects. Thanks

19 January 2021 3,925 2 View

Any recommendation to calculate time to dominant design emergence?

01 January 2021 3,809 5 View

What are core advantages of 2nd & 3rd generation panel data techniques over the 1st generation techniques?

I am interested to know about the difference between 1st and 2nd and 3rd generation panel data techniques.....

31 December 2020 7,204 7 View

Are drones following the e-Auto industry technological trajectory or are they following its own?

* Are drones following the e-Auto industry technological trajectory or it is following its own? * Will drones diffuse faster than electrical vehicles? * Will it depend on the application?, What...

29 December 2020 7,379 3 View

What are you most proud of you in 2020?

I have published two papaers in this year. I learn adobe illustrator logo design , R program and so many new recipes . What about you?

29 December 2020 1,738 27 View

Technically is there any difference between policy implications and policy recommendations?

Usually we use the two terms interchangeably in our articles but whether is there any technical difference between them?

26 December 2020 185 18 View

Which techniques do you recommend to be combined with a technique in Big Data Analytics?

I am trying to assess or predict the use of one specific technology that might have several impacts on one operational activity. This technology is supposed to improve the efficiency of the...

24 December 2020 7,497 4 View