How to dissolve cross-linked Amberlite IRC120 H, hydrogen form resin?

Hello all, I have used Amberlite IRC120 H, hydrogen form acidic cation-exchange resin for the ion-exchange of waterglass [sodium silicate solution -- 40% Sodium silicate (mol ratio > 3.2)...

21 February 2021 5,614 3 View

Simulation or Experiment? How do we choose?

If we want to assess if a phenomenon is going in a direction we expect, we can simulate it, using digital models, possibly agent models factoring in known properties and interaction features. We...

12 February 2021 1,141 21 View

Why RFLP Digestion looks in this way?

01 February 2021 9,576 3 View

Matrix based scientific data analysis: extrapolating to matrices of sets?

Data sets, when structured, can be put in vector form (v(1)...v(n)), adding time dependency it's v(i, t) for i=1...n and t=1...T. Then we have a matrix of terms v(i, j)... Matrices are important,...

30 January 2021 9,295 6 View

SELECT IF in SPSS and its Syntax?

I am writing a piece of code in the Syntax of SPSSstatistics. The code is the following. GET DATA /TYPE=XLSX /FILE='file' /SHEET=name 'Sheet2' /CELLRANGE=full /READNAMES=on...

14 January 2021 2,463 8 View

How to calculate the gas composition for a heat treatment where a very low oxygen partial pressure is needed?

I'm interested in a selective oxidation in an austenitic stainess steel so that Chromia rather then ferrous oxide is formed on top of my metal. I know I should have a value of pO2 around...

16 December 2020 8,541 7 View

The loss of hyperbolicity in PDE?

Question about the loss of hyperbolicity in nonlinear PDE: when complex eigenvalues appear, what is the effect on flow? I understand that we do not have general results on existence in this case,...

16 December 2020 2,571 3 View

How to resolve the sample contamination issue in transmission electron microscopy (TEM) even after long-time plasma cleaning?

Hi, I am doing TEM routinely in my daily research work. Most of my TEM samples are the inorganic oxide-metal nanocomposite films deposited on single crystal oxide substrate (such as STO, MgO)....

11 December 2020 2,695 5 View

Statistical code for indexes?

05 December 2020 664 3 View

Non-parametric correlation tests on SPSS?

I have computed multiple Kendall tau-b and Spearman rho on SPSS. For some of my instances, Spearman rho index is 1 and the Kendall tau-b is 0.988. It should be also the Kendall tau-b 1. How...

21 November 2020 9,833 3 View

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 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

Help request in CST microwave?

im working now on TPV solar cells and metamaterials and i realy need our help in CST microwave i have a tpv cell simulation and i want to extract particullarly the absorbtion of only the active...

02 March 2021 2,246 2 View

Anyone found any research papers on solar furnace design calculations (for solar concentration)?

I am thinking about working on solar furnace with heliostats that concentrate sunlight and heat molten salt, but currently no luck with research. Not a lot of papers based on the subject. (check...

01 March 2021 5,023 5 View

How to size battery banks?

I am designing a small grid connected solar PV power-plant. As the battery's capacity is specified in Ah and demand in kWh. What is the best way to size the battery bank? I have battery price in...

28 February 2021 1,638 3 View

How to design a boost converter for a mppt controller?

I have a doubt on how to select the inductor and capacitor value when I want to implement MPPT controller. This is because we always take a maximum output voltage and current but in this case, we...

28 February 2021 3,637 2 View

How to sample data to increase presence of solar panels in the images?

I am working on creating deep neural network on geospatial dataset and wanted to know how to do the sampling so that I can increase the presence of solar panels in the images. I cannot use entire...

25 February 2021 3,936 6 View

Suppose we have a banana seller cart consisting of 4 wheels, weighing about 300 kg. How much torque motors are needed to pull of push it electrically?

I am thinking of electrifying the street food carts while harvesting energy using solar panels on top.

22 February 2021 4,323 3 View

Gallium Antimonide (GaSb). Can anyone help me to find vendor (provider) to sell GaSb solar cell ?

I am searching of provider (GaSb), I only found this one (https://jxcrystals.com/wp/about/). Can anyone help me?

21 February 2021 1,945 2 View

Could the "incoming radiation (net radiation)" values be negative?

Could the "incoming solar radiation" values be negative? What is the difference between "global solar radiation" and "incoming solar radiation"? Which one might be measured negative values?

21 February 2021 7,726 9 View