Problem with Charge discharge test in supercapacitors?

I have synthesized a polyaniline based composite and coated it on nickel foam. I performed CV in three electrode system at a potential window of -0.2 - 0.8 v. but the problem is : When I perform...

01 August 2020 9,399 3 View

Does CEC have an effect on the type of cations adsorbed?

I came across a confusing concept in a reference and was wondering wether increasing CEC, increases the preference of adsorb sites to bind with cations with higher valence ? For example divalents...

02 March 2020 3,684 3 View

I need early numeracy skills tool for kindergarten or preschool children, can anyone help me?

Dear Researchers and Friends My name is Kamyar Azimi, an Educational Psychology PhD student, Shahid Chamran University of Ahvaz, Ahvaz, Iran. As you might be in the know that there are many...

12 December 2019 1,854 3 View

Are dynamic factor models a powerful way to forecast the stock prices? do you have links and examples of these models?

i want to work with dynamic factor models to model the stock prices and develop a statistical arbitrage strategy based on these models. i looking for resources to understand these models better...

15 September 2016 9,154 4 View

Can reflectance be greater than one for evanescent waves between two different media?

05 September 2016 4,949 3 View

What is the best method to model the melting of particles in a liquid-solid slurry flow?

I'm modelling heat transfer of ice slurry flow inside a tube by ANSYS Fluent. What are the methods to take into account the melting of ice particles? I have so far implemented Euler-Euler approach...

21 January 2016 9,278 4 View

Where can I find design examples according to JSCE GUIDELINES for CONCRETE (for example a simple flexure design of a beam)?

25 October 2014 1,534 2 View

How to convert grade point average to academic achievement variables in SPSS?

Hi dear friends I wanted to help you with your guidance on how to convert GPA scores into academic achievement variable in SPSS. Thanks for your kindness

01 January 1970 1,027 4 View

What is co-normed?

Hi I am translating an early mathematics Inventories from English to Persian and was having trouble with the word "co-normed" in the following sentence: The TEMI-O was co-normed with the...

01 January 1970 3,053 3 View

Does any one know how i can prepare liver tissue with transmission electron microscope with good fixation?

i have problem in preparation of liver tissue with bad cell organelles and how i can adjust osmolarity

03 March 2021 8,890 1 View

How do I increase the yield of my PCR product?

Hello, We would like to increase the yield of our PCR product. We are running a series of PCR reactions that is targeting ~1.1kb sequence. We begin each reaction with ~400pg of template DNA...

02 March 2021 4,029 3 View

1 nm thick MgO thin-film to be deposited on Si wafer using thermal evaporation. What will be the optimum deposition conditions?

Favourable conditions of base pressure, rate of deposition. Also, by which characterisation technique to be used to verify the thickness of the deposited film.

28 February 2021 3,640 3 View

Calculating volume of DNA required from DNA concentration?

Hi I am a bit confused. They are asking me to find out the volume of DNA required in ul (a total of 30-100 ng for genomic DNA) from the DNA concentration in the nanodrop reading which was 404.8...

26 February 2021 5,029 2 View

What is the best etching method for Mg-Ca alloy?

I have used Picral etchant (4.2 g Picric acid, 10 mL Acetic acid, 70 mL Ethanol, 10 mL distilled water) but it didn't work. Is there any alternative?

21 February 2021 2,558 5 View

How to prepare electrolyte of NaClO4 salt for Na-ion battery? Any problem with this salt?

Hello, I am trying to make anode for Na-ion batteries. I have no experience with preparation of the electrolyte for any batteries. NaClO4 salt are available and I am planning to use EC:PC as...

21 February 2021 8,132 1 View

I want to remove TiO2 and SiO2 coating from surface. any one can help me?

I want to remove TiO2 and SiO2 coating from surface. I think that i should use HCl and MgCl2 and an oxidation agent such as potassium nitrate, but i dont know in which propertion should these...

14 February 2021 300 3 View

References for relative humidity created by salt solutions at different temperatures?

I understand that the ability of standard salt solutions commonly used to produce a certain relative humidity (RH) in a closed space changes somewhat with the temperature. Where do I find data...

04 February 2021 7,370 4 View

How to make ppb level concentration ?

Hi, I've N2 gas cylinder and 100 ppm NH3 gas cylinder. With these two cylinders, I'd like to make a ppb level (1- 100) concentration. Any idea how to do that?

01 February 2021 3,264 2 View

Working with insect primary cells in cell medium and in saline solution?

I work with insect primary cells, which I let grow in TC100 insect medium. For fluorescence measurements I have to discard medium (because of its fluorescence properties) and give a saline...

28 January 2021 3,867 1 View