Where can I get extended and reliable data from seawater and oil production waters worldwide to do chemometrics?

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What progress is there in calculating potential energy surfaces (PES)?

I have reviewed some articles of DFT and calculation with Neural Networks, but to what extent it has been possible to calculate PES for complex molecules. With NN there is no physics, but you get...

09 October 2018 2,167 1 View

Are there mathematical models to predict NORM in scales?

There is a variety to predict to some extent the formation of scale of CaCO3(s), BaSO4(s), and forms of CaSO4(s), however when NORM is generated usually species of type Ba(Ra)SO4(s) are...

06 July 2018 2,159 4 View

What book do you recommend to study integral transforms?

I am studying integral transforms (Fourier, Laplace, etc), to apply them in physics problems. However, it is difficult to get books that have enough exercises and their answers. I have found that...

04 May 2018 8,624 41 View

What is the limit of the concentration of radioactivity in Bq/L of Ra - 226 and Ra - 228 in liquid effluents?

If you have oil production waters that will be destined for the environment, what international standards should be followed in the event that you are reaching a river? In drinking-water,...

03 April 2018 382 6 View

What is the best library to build an artificial neural network with Fortran 95 and with Python?

The ANN with a backpropagation algorithm is enough, this ANN will be used under the Fortran 95 and Python languages. Best regards, Ender Araujo.

02 March 2018 6,944 7 View

What are the current research topics in statistical mechanics?

Regards, I would like to know the current trends in statistical mechanics. Where are the research efforts oriented? Ender Araujo

01 February 2017 7,490 4 View

Methodology of software development for scientists (numerical analysis)

Regards, I would like to know if there is a software development methodology for scientific development work. For example for theoretical physics or for theoretical chemistry is there a...

01 February 2017 2,519 0 View

Importance of physical sense in state equations for real gases?

Greetings. I have studied about state equations for mixing real gases. However, I have seen that there is a great quantity of state equations, in conditions of high temperatures and low pressures...

01 January 1970 1,703 3 View

What is the safest laboratory procedure to make solid rocket fuel, using potassium nitrate and sugar?

I would like to start a project for the construction of rockets as a project for high school students. Starting with the development of a solid fuel (KNO3 + sugar) which is the safest method for...

01 January 1970 8,532 17 View

• What the possible Persistent Organic Pollutants and Heavy metals present in fluorspar, sediments, and water bodies around its mining area?

Approximate concentrations are require in compared with the WHO permissible limts

11 August 2024 2,723 1 View

Handling Missing Data and Building a Predictive Model with Incomplete Information ?

I am developing a predictive model for a water supply network that involves 20 influencing points. However, I only have historical data for 10 out of these 20 points. I would like to know how to...

10 August 2024 4,005 2 View

Which Scopus Journal provides the most affordable fees?

"PUBLISHING IN A SCOPUS JOURNAL" Researchers are now at a cross road. The critical need to publish in a Scopus or ISI, etc journal is ever vital. Journal Publication fees must be submitted....

10 August 2024 8,621 1 View

Seeking Advice on Viability and Execution of Undergraduate Thesis Topic?

Hello everyone, I am currently developing a thesis proposal and would appreciate your input on its viability and how to effectively carry it out. My proposed topic is: "Does the perceived threat...

10 August 2024 8,992 0 View

Why Do TDS and EC Increase with Larger Wastewater Volumes, While BOD and COD Decrease?

I have carried out MFC experiments on three different volumes, 50, 500 and 1000 mL of wastewater. Results after MFC treatment shows that TDS and EC are more in larger volumes of water i.e. TDS and...

09 August 2024 9,621 0 View

Do interactions between biosphere, carbon cycle, & water cycle impact global warming & interaction between atmosphere & hydrosphere?

How do interactions between the biosphere, the carbon cycle, and the water cycle impact global warming and interaction between the atmosphere and the hydrosphere?

09 August 2024 3,291 2 View

Who will be moral responsible for the death of thousands of people in the event of an earthquake?

Who will bear moral responsibility for the deaths of thousands of people in the event of an earthquake? Weeks and months remain before the onset of strong earthquakes that bring death to...

08 August 2024 6,134 12 View

Is it true that $\det(V(A))$ may be only $\pm 1$, depending on $n$, for the last symmetric tridiagonal matrix $A$?

One can try to generalize the Vandermonde determinant in the following direction: Let $A$ be any symmetric $n$-order square matrix. Consider its powers' diagonal elements $(A^k)_{ii}$ and...

08 August 2024 6,690 1 View

I need JCPDS file of LSFCO nanomaterial. Can anyone provide me?

Require for Rietveld refinement in XRD.

08 August 2024 3,081 2 View

How can we differentiate between calcite, dolomite, siderite, magnesite and ankerite minerals in carbonatite rocks in thin section under op microscop?

How can we differentiate between calcite, dolomite, siderite, magnesite and ankerite minerals in carbonatite rocks in thin section under optical microscope?

07 August 2024 2,132 3 View