What are the physical properties of the largest dust grain existing in astrophysical media?

I'm trying to test the effect of dust on lung cells

I was thinking of getting 2 conditions as my negative control, one without anything and one with something that mimic dust in physicals properties without the actual dust

the closest I can think of is titanium dioxide

What do you think? or should I just stick with one negative control i.e. no dust

Thank you

There are several papers which are using following formula (as shown in the picture) to calculate the dust mass (Md) of the dusty environments such as Nebula, loops etc in the ISM. The expression for dust mass shows that it depends on grain size, grain density and grain emissivity, here, for IRAS Survey, grain size = 0.1 micron, density = 1000 kg/m3 and emissivity = 0.0010 for 100 micron, respectively, are used. Are these constants same for AKARI and WISE survey too? OR, are there any other methods for the dust mass calculation using AKARI and WISE data? I would be very much happy to get your valuable suggestions. Thank you :)

A three-dimensional (3-D, nonplanar) geometrical configuration of astrophysical fluids could be conveniently visualized.

What is a justified way to visualize one-dimensional (1-D, planar) geometrical configuration of dust molecular cloud fluids in astrophysics?

What is well represented by the single spatial variable, x, in this context?

Hi, I am Jeremy Gabriel and I am a student who really need help with an assignment. So i am given 2 properties, Young's modulus of 110 MPa (mechanical property) and 4.51 gcc (physical property) and i am required to propose two materials that have these 2 properties.

So please kindly help and assist me with this problem I am encountering.

Thank you.

I want to ask you that if we can analyze the dust particles present in air passing through a filter such as HEPA filter in ansys

Sir basically we want to know how fast the filter gets dirty mean blocked by dust particles.

I want that the air contains dust and some other particles and it is passed through a series of filter each of different pores size.Can this be done in ansys.

Do you consider that the availability of soil moisture to crops is solely a function of soil physical properties?

Is there a technical reason for not taking the data or the lack of data is due to the lack of interest in the information it might contain?

If you want to study dust disks around nearby stars, there is data from Herschel and Alma in infrared and radio range that enables spectroscopic studies of molecular transitions but there is no data taken at shorter wavelengths to study other kinds of processes. Why is that?

Is a chemical cleaning with alcohol OK?

See above