Is there any way to calibrate transducer without needle hydrophone?

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How to convert mV output into MPa?

I am working on acoustic characterization of microbubbles using two transducers arranged at 90 degrees. During calibration, I am receiving response in dBm or mV. How I can know the PNP of my...

14 December 2020 1,814 5 View

What is the dielectric constant(Real and Imaginary parts ) of MASnI3 for 300 to 1200nm wavelength?

What is the dielectric constant(Real and Imaginary parts ) of MASnI3 for 300 to 1200nm wavelength? as I need it for Perovskite solar model design in Comsol Multiphysics

25 November 2020 1,350 1 View

Is there any way to prepare Polymeric Nanoparticles without adding water??

I am making Poly Glycerol Sebacate nanoparticles by solvent evaporation and nanoprecipitation, but material got hydrolyzed upon adding water. I want to replace aqueous phase. Which chemical should...

21 October 2020 8,319 9 View

Path to node for column diameter while linking Aspen with excel or Matlab?

i am optimizing a reactive distillation column. I have simulated a base case in Aspen Plus and now want to calculate its total annual cost in Matlab. while linking aspen Plus and Matlab i need...

01 October 2020 207 2 View

What happen if sebacic acid and glycerol were reacted for hour and then left the continued next day??

I have to end a reaction in process due to sone emergency. I was synthesizing poly glycerol sebacate. I reacted them at 170 under nitrogen for an hr and then stopped. Normal duration is 4 hr....

23 September 2020 7,827 5 View

Instead of gold or carbon coating, may I use platinum sputtering to get SEM image of a non-conducting material?

I actually don't have gold and carbon. I would like to know if I can do platinum sputtering on my sample to get SEM image? My sample is a non-conducting nanofiber

22 September 2020 2,470 3 View

How to check previous TC track record from the Japan Meteorological Agency (JMA)?

The TC track record can be checked easily from the Shenzhen Typhoon website, but how to check such records from the JMA website? Looking forward to a positive response.

31 August 2020 6,285 3 View

How to prevent hydrolysis of Pre-Polymer Poly Glycerol Sebacate?

I am working on encapsulating drug in Pre-PGS by solvent evaporation method. In which organic phase is PGS dissolved in THF, drug in water with tween 20. I am getting little particles at end. But...

02 April 2020 497 11 View

How to find Mean pixel intensity of ROI by using Image Processing Tool in MATLAB?

I am trying to find mean & SD of selected ROI via image processing tool. It is showing individual pixel intensity but not mean. Did I have to write a code for it?

25 February 2020 6,225 3 View

How to fix the consistency check, CR and CI while using fuzzy AHP method?

Dear fellows, I am working on fuzzy AHP for a research data. At the end the consistency ratio and consistency index are found more than 0.10. It is ok with the spread data which seems...

04 January 2020 4,118 3 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

Why can't make aluminum nitride film successfully by use sputter?

We use reactive sputtering process to make aluminum nitride film, and want to make c-axis aluminum nitride film on a silicon substrate, but the crystal orientation cannot be seen with...

03 March 2021 7,975 3 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

Is there any test to determine the cardiovascular risk of patients with obesity? from the perspective of obesity?

We found tests to determine cardiovascular risk taking into account lipid profile, blood pressure, age, history of diabetes, other laboratories. But when weight is involved, there is a paradox. I...

02 March 2021 6,036 1 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

Sutter electrode holder leaking after applying positive pressure. How to fix?

I am using a Sutter electrode holder for my patch clamp experiments, but I'm having trouble keeping positive pressure inside my electrode due to a leak out of the back of the holder. I have added...

02 March 2021 5,829 1 View

What SPSS analysis should I run with one IV (with two levels) and two DVs?

Hi, I am trying to figure out which test would be most appropriate to run for the following question: Is there a difference in task blood pressure between smokers and non-smokers? There are two...

01 March 2021 8,235 2 View

How much pressure we can reduce at the outlet to avoid Reverse Flow?

I am simulating Heat Exchanger. I have tried and tested all the methods to resolve this issue from the internet like refining mesh, improving skewness and orthogonal quality ,extending outlet to...

01 March 2021 6,985 3 View

Is anyone familiar with the cyclic compressive fatigue testing (BS EN 12697 - 25) ?

I would like to get more information on the cyclic compressive fatigue testing (BS EN 12697 - 25) which is typically done for bituminous material in pavement design. Any one can advise on the...

28 February 2021 2,004 3 View