Series solution for viscous power-law fluid velocity in rectangular cross-section?

Dear Colleagues, I am looking for a series solution of the velocity in a rectangular cross-section in the presence of a power-law fluid in laminar regime. I found the expression of the average...

20 January 2020 6,502 3 View

Bingham fluid for laboratory experiments?

Dear Colleagues, I am looking for a Bingham fluid to be used in lab experiments as alternative to Herschel-Bulkley fluids. This last category is well reproduced by Carbopol, which shows a fluid...

05 April 2019 7,125 3 View

Someone have experience about the capture of Cavia aperea?

03 November 2016 8,552 2 View

How can I assign free outflow conditions?

I want to assign free outflow as boundary condition. I know that free outflow means stresses + pressure null. But i cannot specify pressure, I must leave it free to develop. Is it enough if I set...

11 May 2016 1,540 6 View

Are these true spheroids?

Hello everyone. I'm trying to form spheroids fom hct116 cells. The first time I did the experiment I could see a defined edge around the spheres and they looked tight. Now all I get are those...

06 March 2016 7,709 3 View

How can I determine a clinically relevant concentration?

Hi! I am testing a new compound on colorectal cancer cell lines and I want to compare it's efficacy with the standard drug utilized in the treatment, which is the 5-FU. What concentrations should...

25 December 2015 9,641 4 View

What is the best way to model the infiltration of a porous body by a descending liquid?

I could find good models to simulated ascending infiltration (capillary rise), because it tends to reach a equilibrium state.

05 October 2015 3,271 4 View

Are there any suggestions for creating a nomogram for the prediction of cancer patient survival?

Is there anyone that can give me some suggestions? I normally use Stata for my analyses. Thank you.

02 October 2014 4,062 2 View

Could the Titan moon be a wake-up call about our biological ignorance and exoplanet fashion despair?

Far as we know (which is very little), Titan doesn't harbor life (the life we know), but has two strong (Earth Life) biosignatures N2 98% and CH4 2%. As far as we know, abiotic processes occurred...

04 February 2014 195 3 View

Analysis of official statistics

Believing that only trained personnel works at official statistical agencies (like IBGE in Brazil), I would like to ask why they insist in the presentation of results from studies (census and...

19 March 2013 2,346 8 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 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

Helix antenna coupling problem?

Dealing with a helix antenna, made with flexible material and not rigid like using a PCB board or wire. At the beginning of the helix is too close to the ground plane, causing coupling. How can I...

21 February 2021 4,453 3 View

How to determine measurement uncertainty of a mass balance?

Hi everyone, I work at a factory plant where they use a mass balance. The problem is that there is an huge difference between the input and output of one element. There are several people working...

10 February 2021 5,764 3 View

I have a problem with sensible heat flux (H) iteration process in Sebal model?

In each iteration, I get the same value of H for different values of aerodynamic resistance and the temperature difference between two heights. Do the results make sense? Is it necessary to adjust...

07 February 2021 8,953 2 View

Which method need to be used to predict crack propagation?

Need to predict the crack propagation phenomenon in a CI component. Suggestions are needed regarding the the methods ( XFEM, J integral, etc.,) which will predict the crack propagation behavior...

06 February 2021 1,936 4 View

What are the advantages and limitations of online teaching mode of HEIs; and how we can make a balance between them?

With the increase in use of online modalities during the current situation, it is necessary to assess the advantages and limitations with regards to teaching and learning from various...

04 February 2021 4,558 8 View

Data balancing before test/train split or only training data balancing. which is correct?

While reviewing technical articles, I encounter some papers where authors have used data balancing before splitting test and train (on full data), and some only balanced training data and let the...

04 February 2021 1,446 0 View

Which software is the best to model a non-linear concrete (ABAQUS, ANSYS,ADINA, ATENA, etc.)?

What is the best finite element modeling software packages for modeling non-linear and fracture analysis of CONCRETE? I've had some with ABAQUS standart/explicit, but I would like to learn if...

27 January 2021 330 6 View