How to calculate the % of gc-yield at various time intervals? And how to plot the calibration curve for that?

More Mahsa Nazeri's questions See All

What is the effect of moisture of the atmosphere on titer of Karl-Fischer reagent (one-component)?

I have a Karl-Fischer reagent (for volumetric titration, which is a one-component reagent) with a titer of 5mg/ml. All references unanimously say the Karl-Fischer solution loses its capability...

02 July 2024 5,044 3 View

What is bibliometric article?

Greetings and Regards I have a question about bibliometric articles about public health or nursing. If any of the researchers have experience or knowledge in this matter, please tell me. Thank You

15 June 2024 2,795 1 View

Is there any guideline for method validation for cosmetic?

Hi everyone Is there any guideline for method validation for cosmetic? I wanna know about criteria for that.

31 May 2024 1,990 2 View

Which types of data can be used for lung cancer mutation detection?

I am working on a project to detect genetic mutations in lung cancer using machine learning algorithms and I am new to genetics and medical sciences. Can I use RNA as input to the algorithm for...

13 May 2024 5,726 6 View

How can i prepare self healing hydrogel for MTT assay?

Generally when they want to use hydrogel for MTT assay, firstly they fix hydrogel with glutaraldehyde then use for MTT assay. so, now, i have self healing hydrogel and its have crosslinker in its...

11 May 2024 6,310 1 View

How can I extract and determination PAAs and PAHs in tatoo?

Hi Have a nice day I want to determination PAAs and PAHs in tatoo. Would you present and introduce methods to this?

02 April 2024 6,772 0 View

Is there a way to improve the fragility of polyethylene terephthalate after hot press?

"Hi, I gasify the polyethylene terephthalate granules and mold them using a hot press at a temperature of 260 degrees Celsius to prepare a bulk sample. However, after molding with the hot press,...

31 March 2024 8,668 0 View

How can I overcome the overfitting problem?

I have a dataset from lung cancer images with 163 samples (2D images). I use the fine-tuning of deep learning algorithms to classify samples, but the validation loss did not decrease. I augmented...

21 March 2024 8,344 6 View

Solvent for polyphthalamide?

Hello, I want to dissolve polyphthalamide in a solvent. I tested different solvents, formic acid, toluene, DMSO, alcohol-based solvents, etc. under high temperature and time, but it did not...

12 March 2024 3,030 1 View

Microplastics removal from wastewater?

Hi. I need to remove all microplastics of a wastewater sample without changing any physicochemical properties of the sample. Can filtration by Whatman filters (for example Whatman 589/3 with...

08 March 2024 8,722 3 View

Baseline drift in HPLC? What causes this?

Hello, Why do i see this baseline drift when i compare my blank (black) to the sample (blue)? Any suggestions as to why this happened? Thank you!

11 August 2024 3,770 4 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

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

Can the limit of quantification (LOQ) of an analytical method fall outside its linear dynamic range, or must it always be within it?

Can an analytical method's limit of quantification (LOQ) be outside its linear dynamic range, or is it always required to be within it? Please provide a thorough explanation supported by verified...

29 July 2024 7,198 9 View

Where to start the Analytical model for Dry sliding wear of metal surface ?

I am doing research on wear mechanism of the additive manufactured metal parts under dry condition. Please share the reference to start the analytical modelling of the wear prediction.

29 July 2024 6,115 0 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

Standard curve of H2O2?

Hi, I need to prepare a standard curve of H2O2 to evaluate the primary products of oxidation. H2O2 I have is 35%. How do I prepare a stock of H2O2 10 microlitere. If s.o has experience, I would be...

26 July 2024 3,460 2 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

How to determine method detection limit in an analytical method?

I know the difference between instrumental LOD and method LOD but my query is - in case of any sample whose concentration is zero or not detected by the instrumental LOD, is it possible to get...

24 July 2024 6,592 5 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