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 to eradicate the deteriorated contact resistance in the electrical or electronic devices, like SCR or contactor' pin cable ?

Through years operation, some of the devices' pins connection gradually become worse and finally burn out due to the high temperature at the connection point. We can check out these risk points...

04 February 2021 7,401 5 View

Is it possible to find out the wettability and contact angle of water on the rough or corrugated substrate?

First of all, whether it is possible to identify the presence of water and its amount on the Silicon substrate by using only FT-IR spectroscopy. Can ATR-FTIR spectroscopy find out the wettability...

03 February 2021 9,085 4 View

Could you please interpret the data and SAXS patterns of lipid nanoparticles for us?

Dear Prof. Weiss, Recently, we prepared lipid nanoparticles (composed of phophatidylserine and aluminum ions), and we characterized the particles using SAXS. However, we are unable to interpret...

15 December 2020 4,292 3 View

How can I represent contact with cohesive behavior and friction in abaqus?

Hi, I am trying to represent an experimental test of pull out in abaqus, I have managed to get the detachment behavior (first section of the graph) but the part where the fiber slides does not...

30 November 2020 6,474 3 View

Why does surface roughness enhance (super)hydrophobicity?

Hello, according to Wenzel's model, an increase in surface roughness will also increase the contact angle, but what is the thermodynamic reason for it? Considering the lotus effect, does a...

22 October 2020 9,004 8 View

Is it possible that the hydrophilicity of a scaffold decreases by increasing the concentration of graphene oxide?

The water contact angle results exhibited increased hydrophilicity by increasing the graphene oxide(0 to 0.5%w/v). Still, it occurred oppositely at the concentration of 0.75%w/v even with...

19 October 2020 553 3 View

Why is the q-value in SAXS data 2pi/d and not 1/d?

I am usually working with electron microscopy images of macromolecules, and we use reciprocal distance units [1/Angstrom] for units in Fourier Space. A repeating signal every e.g. 10 Angstrom...

27 September 2020 5,008 1 View