01 January 1970 1 733 Report

How can I calculate total EQE when I have the absorption of the first two modes of the system and their S parameters? Do I need to use S parameters at all? (I am using CST Microwave Studio for simulations.)

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How we can dissolve the styrene-butadiene rubber bale in a solvent (after this step we want to prepare a liquid-liquid solution) ?

1. what is a good and Inexpensive (preferably aliphatic) solvent for SBR ? 2. how we can dissolve SBR bale in White Spirit (402) solvent ? 3. how we can grind SBR bale ? 4. How we can reduce SBRs...

15 March 2024 272 3 View

What are the differences between Amine Value and Amine Content? How can I evaluate these two concepts?

Please introduce me to some references and provide formulas. Thanks

11 March 2024 1,845 1 View

When does a surfactant act as a foam stabilizing agent and when does it act as a destabilizing agent?

Can someone explain the mechanism to me?

27 January 2024 3,530 1 View

How do surfactants act as a defoamer?

Can anyone explain how surfactants act as an antifoaming agent?

23 January 2024 6,894 7 View

Related to HSE ?

Please describe a safety or health problem (disease specific to mining environments) in mining in Iran or the world, and if possible, tell the causes of the accident and ways to prevent it ....

26 December 2023 3,952 2 View

How to calculate the dielectric constant of a material at high frequency?

Hello everyone, In one of our studies we need to investigate the dielectric constant of material for cables. The NAYY cables have 4 different parts in frequency from 1MHz to 40MHz. The first one...

13 December 2023 6,070 3 View

What kind of membrane is used to make the reference electrode?

What kind of membrane is used to make the reference electrode? Is it possible to use a ptfe membrane with a pore size of 0.22 micrometers (similar to syringe filters)?

06 November 2023 9,816 0 View

White spots appear on the surface after polishing SS316 LVM ????

I am polishing 316 steel with electro-polishing bath compound, white spots appear on the surface after polishing? How can I solve this problem? Thank you all for your help? -Phosphoric...

17 May 2023 2,444 0 View

How we can charectrize pyrolytic carbon and distinguish it from garphite with raman spectroscopy?

can anybody help me?! I'm researching on depositing pyrolytic carbon for about a month and I really stuck on the characterization methods. because the distinguishing this material from graphite is...

13 April 2023 1,724 3 View

Which universities are best for power electronics in US?

I am considering applying to US universities and I am interested in power electronics related to electric vehicles. your answers are highly appreciated. Thanks.

24 March 2023 1,988 1 View

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