Hi Has anyone treated the wastewater of alcohol production units (specially ethanol units) with advanced oxidation methods?

if anybody uses these methods on an industrial-scale, please let me know. I wanna ask a few questions and I want information. thank you.

25 October 2020 8,605 2 View

Convective drying of a wet object in Ansys Fluent?

I have a wet object to dry by convection. The "object" can be treated as a porous medium or semi-solid. Do you have any idea about solving it in Fluent. This is a conjugate heat and mass transfer...

31 August 2020 6,646 5 View

What is the best method to predict the water consumption of EACH customer for the next month?

Say we have a dataset that has the following attributes: - customer_id: There are a total of 1000 customers, each of them with a unique customer_id - observation_date: The date on which we...

01 August 2020 5,376 5 View

Why Mean Absolute Percentage error is too high?

I would like to make a comparison on the performance of some regression algorithms according to different performance criteria, including Root Mean squared Error (RMSE), coefficient of...

10 July 2020 5,463 7 View

What is the best brand of protein molecular weight marker for SDS-PAGE?

Hello, I use from Biorad Precision Plus Protein dual-color standard (MW marker), but the molecular weight that is estimated with this marker isn't usually precise. to confirm, I used from USP...

19 April 2020 3,142 5 View

What is the reason of big variations in Biuret total protein assay?

Hello. I used from Thermo Scientific BCA kit and Sigma protein STD 2 mg/ml (0-2000 ug/ml) and prepared a lot of dilutions from my sample (up to 1-64). I had a different final concentration on my...

18 March 2020 488 3 View

How to accelerate running the first(geostatic) step in Abaqus?

Hi all I have modeled an excavation in three steps in Abaqus software. The model has 4 steps. The first one is the geostatic step and the rest of them are excavation steps. I am using Umat...

24 January 2020 6,821 2 View

Should I use from "WHO International Standard Somatropin (Recombinant DNA-Derived Human Growth Hormone) NIBSC 98/574" as standard in SDS-PAGE?

1) Hi, Do you know that NIBS 98/574 standard is used in SDS-PAGE? (in this standard COA, it's not mentioned that the above standard is suitable for SDS-PAGE or not?) 2) why my recombinant human...

28 December 2019 1,936 5 View

Does anyone know how to create a multi temporal map from different single band raster layers?

I`m wanna create a multi temporal map of built up areas in different time spans to show the urban sprawl trend in one layer. There are NDBI layers with a specific range which covers all features...

04 October 2019 9,272 3 View

How many interviews are needed for a pilot study in a qualitative research approach?

I`m a PhD candidate and as part of my project, I`m going to conduct a qualitative research by doing semi-structured interviews with social entrepreneurs as the data gathering instrument. I`m...

28 July 2019 8,976 10 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 deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

How the wettability of rock sample can be changed by ageing in pure hydrocarbon oils only?

I want to do wettability analysis of hydrocarbon oil (octane)/rock/surfactant solution system. but to do the analysis first I have to make rock surface oil-wet. Since hydrocarbon oil does not have...

27 February 2021 5,383 3 View

What are the patterns of human behavior that lead to COVID-19 infections?

Does data from contact tracing help in establishing patterns of behavior and social interactions that lead to infections? There are cases here in the Philippines where patients have no travel...

25 February 2021 9,002 13 View

How to measure angle between laser travel path and machine axis in Laser Measurement system?

25 February 2021 1,987 3 View

How do you mesh a thin solid in Fluent?

Hello, I have used the shell function on SpaceClaim to create thin solids for the model I am studying. These are contained within an enclosure for my study. I chose this approach as it avoids the...

24 February 2021 8,856 3 View

No streamlines present in a small region inside a flow. This means exactly what?

No streamlines present means whether the flow is getting obstructed there and the velocity inside the region is zero? Or else, the fluid is trapped inside that region with a nonzero velocity?...

22 February 2021 5,249 10 View

The most suitable method to calculate the stress intensity factor in the presence of contact between the crack lips?

I'm trying to study cracked structures under a compressive load taking into account contact between the crack lips. I would like to know if the method of extrapolation by displacement remains...

21 February 2021 8,694 4 View

Can anyone help with an Accurate Diffuser Expansion Loss formula for rectangular shaped diffusers in turbulent flow regime?

I have tried Idelchik's Handbook of Hydraulic Resistance 4th Edition (2007 page 300) formulas and across some range the formulas are reported valid for, the law of conservation of energy is...

20 February 2021 2,504 1 View