Where can I purchase pure silicon powder in the 20-75 range or similar?

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Trouble growing THP-1 cells?

Hi, everyone. I have some issues with THP-1 cell culture. I have little experience in cell culture and I hope some of you could share some experiences in culturing this type of cell. I'm...

30 May 2024 7,764 1 View

Why do some indicators (NFI, chi-square, D_g) not appear in smartpls results?

Why do some indicators (NFI, chi-square, D_g) not appear in smartpls results? When I analyze my research data, the previous tests are all ok, only the NFI test and D_g appear as N/A, and the...

02 November 2023 9,263 3 View

Are there non-destructive protocols for de-metalization of electron microscopy samples?

Hello to all. My peers and I intend on using micro-CT scans to generate images of the penises of small mammals; in particular, we would like to assess the shape of the baculum (penis bone),...

21 September 2023 8,394 1 View

Which is the correct transformation matrix for converting from DQ0 to dq0 and vice-versa?

I have been working with multi-machine power systems, and I have been struggling with the transformation between the *dq0* and *DQ0* frames. I will first introduce my understanding of these...

10 July 2023 857 2 View

How to compute residuals (upper and lower) in frequency response function reconstruction after experimental modal analysis?

When regenerating FRFs with modal data estimated from real measurements, it is common to add upper and lower residuals to the synthesized FRFs, which are related to non-considered modes located...

30 May 2023 8,535 1 View

How to determine the HLB of vegetable oils?

Good afternoon! A part of my master's degree involves determining the HLB of vegetable oils that I will work with to develop a formulation. I have found it difficult to determine this parameter...

11 February 2023 5,977 2 View

How to dilute fatty acids ?

Hi everyone, I need to prepare ngm plates supplemented with fatty acids to grow C. elegans. Thus, I would like to know which solvent can I use to dilute fatty acids (myristic acid and linoleic...

28 September 2021 7,477 4 View

Which method is more eficient to isolate RNA from C. elegans?

I have been trying to isolate RNA from C. elegans by the trizol method, but when I go to the quatification step (with biodrop) the sample has no RNA. I imagine the trouble can be with the lysate...

17 June 2021 7,019 6 View

What is considered a good binding affinity energy value between macromolecules?

Hi everyone, Does exist any threshold for binding affinity value between macromolecules? E.g. Any value lower than -5.0 Kcal/Mol..... How to determine that the binding affinity among different...

22 September 2020 4,527 3 View

High pH in aeration tank?

I work in the WWTP of a tannery down in Brazil and lately there's been this one thing that's really bugging me. I have learned from experience in the plant that when the pH of the aeration tank...

11 August 2020 2,403 7 View

In the presence of VERY high concentration (1000 ppm) of silicon, the adsorption isotherms of arsenic are showing anomalous trends, why so?

I conducted an adsorption experiment of arsenic on soil in the presence of different doses of silicon as competing ions to see the effect of silicon on arsenic adsorption and desorption. I took 5...

03 August 2024 6,500 3 View

How gold procurement?

Please note it

29 July 2024 4,920 3 View

How gold procurement?

https://www.cleanteqwater.com/resources/case-studies/gold-mine-australia/

29 July 2024 5,161 1 View

Mechanochemistry: ball to powder mass or ball to powder volume?

I run mechanochemical reactions that involves the use of a large amount of catalyst (1:1 molar ratio to the reactant). When I try to understand the effect of amount of catalyst on the reaction, I...

23 July 2024 9,938 1 View

I want to plot calibration curve of pure mirtazapine powder using HPLC. Can someone please suggest a method without HPLC buffer as a mobile phase?

I am searching for HPLC method to estimate Mirtazapine but i want to avoid HPLC-buffers as a mobile phase component. So, I am looking for alternative HPLC-solvent (acetonitrile, methanol etc.)...

14 July 2024 1,493 3 View

What binders suggestion that I can use for zinc alloy?

I am working on powder metallurgy, and during the compaction process, the powder does not pelletize and remains in its powder form. To address this issue, I am considering using binders to improve...

13 July 2024 9,003 2 View

How i figuer out the weight of curcumin powder?

I am trying to load curcumin emulsion in 4% chitosan gel but i don not know how many mg powder is needed ?

10 July 2024 2,462 1 View

Can anyone suggest what amount of powder I have to disperse in the solvent for taking the FTIR spectra?

I have to compare the FTIR of the two samples, one is in powder form and other one is the powder dispersed in IPA or water. Both are same material, so how the bond will change

09 July 2024 8,011 2 View

Is VSM measurment of NdFeB alloy powder sample require any spesific sample preparation ?

Is any specific sample preparation required to perform VSM measurement of NdFeB alloy powder to get a square-shaped M-H loop? Or is it mandatory to make magnetically aligned and sintered pellets...

09 July 2024 1,969 0 View

I have need a LPBF/SLM model on comsol multiphysics ?

In this model clearly understanding how to active one layer to another layer and how to add powder material properties step by step.

08 July 2024 6,147 0 View