What is the normal range NT-proBNP using ELISA kit in the healthy adolescents?

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Complex dynamic systems theory data analysis inquiry?

How many participants and times are required to conduct latent growth-curve modeling or cross-lagged panel analysis. Thanks in advance.

29 May 2024 1,853 1 View

Data analysis inquiry?

To examine growth and development of large sample size of partcipants on over the course of a semester, what data analysis do you suggest cross-laged panel analysis, latent-growth-curve modeling...

26 May 2024 719 3 View

How should we put surveys together?

If we have more than two surveys on our research, should we separate them or put together on online google forms? Thanks in advance.

21 May 2024 2,780 0 View

What is the best way to couple light from integrating sphere into a multimode fibre?

I am setting up a test to measure power and spectrum of laser dies. To avoid precise alignment, and also due to lasers' high output power, I have decided to use an integrating sphere to do the...

31 March 2024 4,170 6 View

Qualitative data analysis?

How do you check the reliability and validity of qualitative research tools including semi-structure interview questions and self-report? Thanks for sharing your useful information in advance.

04 January 2024 5,592 4 View

Where can I find CEL1 endonuclease enzyme?

I need CEL1 enzyme to use it in my laboratory work to complete my PhD thesis. Unfortunately, I didn't find it anywhere. So I'm waiting for any request about companies name where is available or...

31 October 2023 289 3 View

How to change RAxML file extension bootstrap.tree to mega file?

I drew a sequence tree of Newcastle birds with the cipres website. How can the desired tree be viewed graphically in the Mega software?

23 October 2023 8,059 0 View

How internally connect the DAC output and the ADC input of an NI daq device?

Dear researchers and engineers, I am trying to implement a recommendation from a journal paper, however, I have faced a problem that I could not yet find a solution for it. To elaborate more, I...

18 October 2023 8,934 1 View

How to implement analytical hierarchy process (AHP)?

Why geometric mean is used in analytical hierarchy process (AHP) instead of arithmetic mean? How would it be possible to determine the inconsistency between two pair of comparisons between experts?

22 September 2023 2,792 11 View

What are the geological distinctions between till soil and rafted soil, both of which are products of glacier movement?

Despite their common origin, what specific characteristics set them apart in terms of their composition, formation, and significance in glacial geology?

06 September 2023 2,695 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

How to increase simulation box size?

We intend to study the interaction between peptides and polymer (like PP, PE and PS) through MD simulations using Martini force fields ( Martini 2 for PP and Martini 3 for PE, PS). We have...

08 August 2024 4,842 0 View

Unusual intensity drop in some sections of chromatograms in DDA?

Hi, we have measured tryptic peptides using both DDA and DIA method on QExactive. In DDA replicates i saw unusual intensity drops occurring at the same sections of chromatograms in DDA replicates...

07 August 2024 3,218 4 View

How to analyze multiple phosphorilation sites?

Hello, I am currently analyzing some phosphoproteomics data, but I have peptides with multiple phosphorylation sites or phosphorylations together with carbamidomethylation or oxidation. How can I...

04 August 2024 8,432 3 View

Recovery rate after peptide desalting using Sep-pack C18 1 cc Vac Cartridge?

Recently I'm trying to use Sep-pack C18 1 cc Vac Cartridge (Waters: SKU: WAT054955) to desalt digested peptides. However, the recovery rate is usually 40-60%. What is the normal recovery rate?

31 July 2024 6,544 11 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

What is the weight of rotavirus A (ng)?

I am developing an ELISA kit for rotavirus A (G1P8 and G1P6). Does anyone know the weight (ng) of these two strains? Or to help me find their weight?

29 July 2024 3,138 2 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

How can I get old refernce in geomorphological mapping?

how can I read Waters, R. S. 1958. Morphological mapping. Geography 43 :10-17 from internet? note: not in google or resaearch gate

26 July 2024 7,813 3 View

How to merge two or more linkage maps?

I have three linkage maps that needs to be integrated to create a consensus map for QTL mapping.

25 July 2024 6,505 2 View