How to obtain V2O5?

Hi everyone! I`ve question about vanadium pentoxide. Exactly about precursors for the synthesis, about conditions. For example I need to obtain V2O5 powder, should I firstly obtain NH4VO3, or I...

11 January 2021 1,382 4 View

Good entry literature on philosophy and/ or ethics of technology?

Hello, I am searching for a good introduction or overview on the topics, methods and research of philosophy or ethics of technology (separately). Any suggestions? Thanks in advance! Hallo, suche...

23 April 2020 5,096 1 View

How to calculate extraction steps?

Hello! Can you, please, help me to find an equation for calculating theoretical steps for separating two components by liquid extraction (not graphically) I`ve performed extraction for two...

19 December 2019 6,696 7 View

How to separate Eu and Gd?

Hi! I`ve found a lot of articles in which REMs are devided into light, medium and heavy groups, and it`s quite easy, ok. But I still can`t find information about Eu and Gd separation. Is it...

05 December 2019 161 4 View

Does anyone know test battery for assessing musician's genre?

05 February 2017 2,192 1 View

Hplc grade vs ACS reagent.

I want to run hplc analysis using tannic acid as standard. May I know whether ACS reagent is applicable for hplc analysis. I kept searching for tannic acid hplc grade but could not find one....

08 March 2016 6,438 4 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

How to calculate average trend in maximum annual NDVI from MODIS?

I am wanting to calculate the average trend in maximum annual NDVI in Iceland from 2010-2020 using MODIS MYD13Q1 V6. How would I do this? I have currently inserted the NDVI bands from the MODIS...

02 March 2021 752 2 View

How Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 View

Where can I find atmospheric measurement profiles (temperature, density, etc.) between 300-800 km altitude?

I am investigating thermospheric mass density profiles between 300-800 km altitude. I would like to compare the variability with other parameters, including temperature, electron content,...

01 March 2021 5,902 3 View

How can we simulate an hyperelastic-viscoelastic behavor with Ansys APDL?

I am working on modeling and simulation of biomecanical material behaviour, I have succeded on simulating skin using anisotropic hyperelastic material, on APDL and in our lab's finite element...

28 February 2021 552 3 View

How to find the right number of integration points in second order 3d finite elements?

I am familiar with finite element simulations and numerical schemes like the Gauss Legendre quadrature. I also know that the Gauss integration yields exact values for polynomials up to degree 2n-1...

27 February 2021 6,818 3 View

Trouble with Charting with Google Earth Engine (Technical)?

Hello. I have a problem with the charting in google earth engine. I created an image collection by combining 5 image collections of five parameters and using ee.Join.inner ( ) and .apply ( )...

26 February 2021 7,084 2 View

What is the best way to calculate the angles of twist for concrete columns subjected to torsional moment using finite element software?

In Finite element software like ANSYS , there is difficulty in obtaining direct results of twisting of concrete members because SOLID65 which is the unique element designed to represent concrete...

26 February 2021 3,806 2 View

Is there any one who can provide a donation of HPV detection and genotyping kits in exchange collaboration fors?

Warm greetings My name is Ayichew S. and I am doing my Ph.D. in Medical Microbiology (on Human papillomavirus). At this stage, I have almost completed a clinical sample Cervical swabs)...

25 February 2021 1,660 3 View

Is there any one who can provide a donation of HPV detection and genotyping kits in exchange collaboration forms?

Warm greetings! My name is Ayichew S. and I am doing my Ph.D. in Medical Microbiology focusing on Human papillomavirus). At this stage, I have almost completed a clinical sample (Cervical swabs)...

25 February 2021 3,612 3 View