Which method is preferable for modelling tuned liquid damper (TLD) in SAP2000/ETABS?

There are two methods to model tuned liquid damper (TLD) which is based on shallow wave theory (Sun's) model and equivalent tuned mass damper (TMD) approach (Yu's model). which one is better...

29 January 2020 8,076 1 View

From which point of view we assume the dimentions of structural elements before doing structural design?

I am going to check the effectiveness of tuned liquid damper as seismic control and i want to take sample multi story building with out designing the structural elements. so to take that sample...

17 May 2019 2,220 6 View

Wat doese the term 'tuned' mean from the point of view of tuned mass damper?

why the vibration control dampers like mass dampers called as tuned mass damper

24 March 2019 9,510 3 View

Any advise on HPLC analysis of proteins?

I was trying to analyze protein sample using HPLC, but unfortunately I am unable to get a good baseline of my blank run; it is sloppy with zigzag kind of pattern. I tried different things to fix...

01 October 2017 2,261 3 View

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 get/count refractive index in gasses?

20 February 2021 8,202 6 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

Which is the best software for the simulation of tribological properties of materials?

I want to simulate the tribological properties of solids, liquids, and fluids, please suggest good software.

02 February 2021 3,947 3 View

Does anybody work with CoolLED in fluorescence microscopy?

I have trouble with exciting wavelengths higher than 460 nm while e.g. ex with 405 nm works. Filtercubes are correc, as I used them with my old xenon lamp before... I work on axiovert200M and with...

25 January 2021 5,201 2 View

How to prepare a liquid sample for FTIR spectrum?

I have a ethanol-water 50% extract of mango peel. I purified mangiferin from the extract with filtration and precipitation. so i obtained a low concentrated extract which i want to se the IR...

24 January 2021 8,880 7 View

Why high voltage and current (and some gases) Cause Spray-mode metal transfer in Gas-Metal Arc Welding (GMAW)?

This transition phenomena of Globular to spray mode as voltage , and especially current is raised, is very commonly known to Manual Metal Arc Welding (MMAW) and Gas-Metal Arc Welding (GMAW)...

20 January 2021 7,984 2 View

Can you have pressure inlet and velocity inlet at the same time?

I was reading a reference (Reitz-A Photographic Study of Flash Boiling Atomization). In his experiment, his boundary condition is delta p and constant velocity. The liquid injection pressure was...

18 January 2021 842 9 View

How can you confirm new liquid FTIR cell fits calibration?

We have an FTIR instrument which was calibrated in transmission/absorption mode using a set of cells for different ranges of D2O concentration. One of the cells at high range broke and the new one...

16 January 2021 4,791 2 View

Where can I find these two papers?

14 January 2021 1,572 3 View