Does anybody know a company specialized in platinum machining?

More Reda M. Zaki's questions See All

Why is my TE-eluted cloned plasmid (isolated via miniprep) not freezing at -20 degree celsius? Is it normal?

I isolated my cloned plasmid from TOP10 cells using invitrogen plasmid miniprep kit and eluted it in TE buffer. But I noticed that contrary to my plasmid aliquot, it does not freeze at -20 degree...

19 June 2024 1,612 8 View

Is it possible to perform ANOVA on the reduced factors ?

I have 7 factors in my model and each factor contain many items. Is it possible to compare the difference of the reduced factors between groups, or do I have to perform the test for each item...

12 June 2024 6,845 10 View

Which is more polluting to the environment, extracting crude oil and its derivatives or extracting lithium, and how to get rid of it?

14 May 2024 7,181 2 View

Are the licensing rounds that China recently obtained from Iraq considered a victory for the Chinese pole over the American pole?

14 May 2024 3,151 2 View

Hello everyone......I want to add an electrical voltage of 2.35v to my design and I am using FDTD LUMERICAL?

I design ELECTRO_OPTIC MODULATOR it using FDTD LUMERICAL that contains 3 waveguide. The intermediate waveguide is a plasmonic that contains SI, ITO, HFO2, and AU. I need to add a voltage to the...

28 January 2024 8,773 2 View

The software used to plot this?

What program is used to draw here? Please explain

28 January 2024 6,484 0 View

What are the dapi dots appearing in the cytoplasm of stained cells?

I'm facing a puzzling question. I stained two different cell lines of the same type and observed DAPI dots in the cytoplasm of one, unlike the typical DAPI pattern in the other (see images). Both...

17 January 2024 3,300 5 View

Do these celebrations contribute to promoting economic growth, employment and increasing tax revenues in general?

30 December 2023 2,049 1 View

What is the cost of New Year celebrations for major cities globally and what is its impact on the global economy?

30 December 2023 1,175 1 View

What is the total financial cost of these celebrations, including the costs of fireworks, artistic appearances and concerts?

30 December 2023 4,793 0 View

How to calculate CCS for Sodiated adduct ions and Multiply Charged Ions?

I'm currently working on calculating the collision cross section (CCS) for various ions, and I'm facing challenges when dealing with sodiated and multiply charged ions. Most of the resources I’ve...

08 August 2024 8,329 0 View

1. If I can quantize the atom using this hyperbolic spiral and classical physics, could nature do the same?

If we map as a continuous motion an ionising electron (beginning its journey at n=1) in an H atom, a specific hyperbolic spiral appears (see animation). When we solve this spiral formula, we find...

07 August 2024 5,343 2 View

How are iso-frequency contours plotted?

Let's say we have a standard, regular hexagonal honeycomb with a 3-arm primitive unit cell (something like the figure attached; the figure is only representative and not drawn to scale). The...

07 August 2024 1,937 1 View

Inquiry on Maximum Nucleic Acid Volume for 2.5 mL Liposome Solution?

I am currently working on a project involving liposomes and need to determine the maximum volume of siRNA that can be added to a 2.5 mL liposome solution with a total lipid concentration of 10...

30 July 2024 6,420 1 View

How can I use DFT-D3 correction ( Siesta version 5.0.1)?

Dear Siesta Users, I installed Siesta 5.0.1 and I want to use Grimme's D3 correction. According to the 5.0.1 manual, I could use a few parameters to include the D3 correction in the...

27 July 2024 5,748 0 View

EDC carbodiimide and NHS easter 's half life among different pH?

It has been long known that EDC carbodiimide and NHS easter's half life agains hydrolysis are highly related to pH. However, very surprisingly, not yet found a paper giving a table/chart of their...

25 July 2024 8,738 0 View

Is the zero-zero component of the metric tensor equal to 1 for accelerating reference frames?

Consider the case of negligible gravity but there is an accelerating reference frame. Its origin traces out a trajectory, or world line, seen in some inertial reference frame. The Lorentz metric...

24 July 2024 1,608 15 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

How to eliminate the carry-over effect in GC-MS/MS system?

Hi, I am a PhD student working at Jagiellonian University, Faculty of Chemistry. My work is related to the development of new analytical methods for the quantification of short-chain fatty acids...

22 July 2024 5,492 6 View

MDCI module in Orca software?

Dear Researchers, My question is associated with the "MDCI" method in Orca. Please let me clarify my question using a simple example: Suppose we are going to perform CBS extrapolation using "!...

21 July 2024 1,632 0 View