It there anybody who run some plant samples on a mass spec. and laser analyses and then compared the isotope data. What is the difference? Thank you so much for your help.
I failed to input data in SIAR package in R in the order of siarmenu(). Is there anyone who tell me how to prepare the data. It is helpful to paste an example here and the order. Thank you so much...
01 February 2017 8,083 2 View
The local meteroric evaporative line (LMEL) was built by the water samples collected from the ponds or reserviors in the catchment. The slope and intercept of δD vs. δ18O equation was fit from the...
04 May 2016 4,589 6 View
Approximate concentrations are require in compared with the WHO permissible limts
11 August 2024 2,723 1 View
i am unable to interpret why its increases in start as shown in figure
11 August 2024 2,179 1 View
Can anyone explain this method? Especially the last statement where it says only at 1.5 to 2.5mins was the MS/MS connected to the UPLC. How is that possible, is it a feature in this specific...
11 August 2024 8,141 3 View
I am developing a predictive model for a water supply network that involves 20 influencing points. However, I only have historical data for 10 out of these 20 points. I would like to know how to...
10 August 2024 4,005 2 View
I am using Rhodamine6G as gain medium and silver nanoparticles as scatterers on a microscope slide and laser input 532 nm comes from above.
09 August 2024 9,894 2 View
How do interactions between the biosphere, the carbon cycle, and the water cycle impact global warming and interaction between the atmosphere and the hydrosphere?
09 August 2024 3,291 2 View
Hello experts, Does anyone know any free software about retention index prediction ?
08 August 2024 7,403 2 View
One can try to generalize the Vandermonde determinant in the following direction: Let $A$ be any symmetric $n$-order square matrix. Consider its powers' diagonal elements $(A^k)_{ii}$ and...
08 August 2024 6,690 1 View
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
Dear QE-users, In the method where full MS positive mode and PRM mode are used, we always get an incorrect auxiliary gas reading (41 instead of 25). This only happens in this method; other...
06 August 2024 4,953 0 View