Is it possible to determine COD for solid substrates (e.g. corn straw, sunflower stalk)?

More Đurđica Kovačić's questions See All

How Respirometric Sensor System (Velp Scientifica) eliminates methane from the system?

Dear all, today I started my Velp Respirosoft system for the first time and everything is new for me. I want to analyze pig manure for BMP. I am wondering is everything well set because I am a...

28 April 2024 7,609 1 View

[UTAUT2/SEM] Is it better not to covary exogenous constructs in a structural model?

Dear community, When drawing a structural model, I am highly dissatisfied with the final significance values. I obtain only one significant predictor for my dependent variable. If I remove the...

17 November 2021 2,813 7 View

How you deal with incomplete tritium input function when modeling groundwater MRT?

I mean which method you use to complete the dataset at your location? Or you simply use the nearest station with long dataset of tritium in precipitation? I am a bit sceptical of extrapolating...

17 February 2014 7,665 3 View

Could someone point me to the most recent checklists of marine fish for countries in Mediterranean, Black Sea, Baltic Sea and NE Atlantic areas?

I would be grateful for the references or even better pdfs of these reviews. I need these for IUCN species assessment.

09 February 2014 3,141 31 View

Calculation of the total amount of electricity needed to charge electric vehicles

Dear researchers, I am currently working on research that analyzes the necessary capacities that could meet the demands for electricity if the full implementation of electric vehicles occurs. I...

01 January 1970 5,496 0 View

The transition from fossil vehicles to electric vehicles - 2035

Dear Researchers, Considering the adopted plan to end the production of cars on fossil fuels by 2035, which means a complete transition to electric vehicles, I am interested in your opinions on...

01 January 1970 7,559 4 View

Aspen Plus Simulation?

Greetings When one is to perform Simulation or modelling of Pyrolysis of Biomass Waste materials using Aspen Plus software, and one has both the macromolecules breakdown (Cellulose, Lignin and...

06 August 2024 5,023 1 View

Why results of ROS flurescence are negative as there was no bacteria within?

Hello. I am working on ROS production of two systems: system A is cerium oxide and hydrogen peroxide, system B is cerium oxide nanoparticle, hydrogen peroxide and potassium bromide. I did some...

04 August 2024 5,974 3 View

Why aren't most metal oxides insoluble in water?

Why BaO (s) + H2O(l) ---> Ba 2+(aq) + 2 OH - (aq) if Oxygen loves owning all the electrons, why would it bind to hydrogen which competes with Oxygen for electron ownership more so than...

03 August 2024 5,392 1 View

How to Transform my handy-wavy explanation of why group I/II metals oxides in aqueous solution are basic into a rigorous argument?

I heard an explanation about something being a better proton acceptor or lone pair donor but that doesn't make sense. I couldn't explain in in terms of acid-base theory. The hand-waving way I saw...

03 August 2024 9,918 0 View

¿Are oxygen vacancies in semiconductors capable to change the band gap?

Dear all! Oxygen vacancies do raise negatively the Fermi level by increasing the negative charge in the semiconductor crystal structure. In the case of n-type semiconductors, I wonder if this...

30 July 2024 8,339 2 View

What is the best method to detect the chemical composition of pollen ?

I have multiple small samples of grass pollen with anthers. I want to find a method to identify concentrations of proteins, lipids, and other various elements for these samples. any suggestions?

28 July 2024 5,331 1 View

Hi dear researchers, do you suggest the best and shortest path for chemical synthesis and green synthesis of magnetite(Fe3O4)?

Suggest the best and shortest route for the chemical synthesis and and green synthesis of magnetite(Fe3O4) The chemical synthesis should contain the least dangerous chemicals along with full...

21 July 2024 2,476 2 View

Why do fish have fishy odors naturally ?

Chemical Engineering /Food Engineering

20 July 2024 4,152 4 View

What should be consider when do CVD?

I'm trying to create a new substance. Are there any important considerations when fabricating with CVD? For example, lattice constant If you have any such considerations, please let me know.

15 July 2024 9,359 0 View

Is there any possible explanation for the statement written below?

Low magenic concenrartion indicating enhanced chemical weathering associated with warm and wet climate in detrital sediments.

14 July 2024 1,381 4 View