Heat exchanger with liquid Nitrogen as coolant?

I want to cool Natural Gas from 195 Kelvin to 138 Klevin in a heat exchanger by using liquid nitrogen as the coolant medium. When entering the heat exchanger, the liquid nitrogen will have a...

01 March 2021 6,450 5 View

How to replicate the well conditions of a crystal hit with 20%(w/v) isopropanol?

I had a crystal hit in a well with 0.1M HEPEs pH 7.5, 10%(w/v) PEG 4000, and 20%(w/v) isopropanol. Why is isopropanol in w/v here if it's just solvent? How do I recreate this well condition?

25 February 2021 9,761 1 View

How to get/count refractive index in gasses?

20 February 2021 8,202 6 View

What is role of toluene and stearic acid in ball milling for powder ? In what weight percent we should add this to powder?

I am doing ball milling operation of Aluminum and silicon carbide powder. I am pretty confused about what should be added as process control agent ? what is role of toluene as PCA and stearic...

12 February 2021 5,205 3 View

2D wavelet transform?

Dear all I have a 2-dimensional mode shape of one concrete beam and I put the data of mode shape in a matrix (69*3) which the first column in the matrix is x coordination of my beam and the second...

10 February 2021 3,301 3 View

Is ANSYS Fluent good for simulation of a three phase reactor(stusy of its hydrodynamics or mass transfer...)?

Hello everybody, I would like to simulate a three phase reactor and study its hydrodynamics. I would like to know which type of software is better? I have a good command of ANSYS Fluent and I am...

10 February 2021 4,303 3 View

How to make Fast Green FCF from powder?

Hi everyone We need Fast Green to electroporate plasmid into mice embryos, therefore we simply need it to see some color in the liquid we are electroporating so that electroporation is more...

07 February 2021 1,671 2 View

Does anyone knows about a comercial software to record pressure and temperature during reaction in an Autoclave?

Dear all: Currently I am working with polymerization reaction in a reactor. For this, I need to control temperature, pressure, agitation speed etc. For calculation of rate of polymerization, I...

07 February 2021 355 2 View

Do you have any experience with transfection of EBV immortalized B cells with Lipofectamine?

I know that efficiency of transfection for primary B cells is very low with Lipofectamine. But I did not try that for EBV immortalized B cells. Do you have any experience with transfection of EBV...

05 February 2021 4,159 1 View

What is the reason for using Glass Impingers?

Impinger bottles are used at some applications, where the gas is cooled and the condensate is dissolved in a solvent contained in the impingers. I have always seen impingers made of glass. Why not...

03 February 2021 6,959 2 View