can i use GCMS or LCMS to identify the origin of glycerin (plant animal/ petroleum). is there another alternative other than IRMS and NMR?
Handbook [of] Heat Exchanger Fouling: Mitigation and Cleaning Technologies Hans Müller-Steinhagen IChemE, 2000 - Technology & Engineering - 382 pages
29 June 2024 8,259 0 View
Is it possible to achieve this by combining flux tally and reaction rate cards?
24 June 2024 3,727 3 View
As Clive Humby said, "Data is the new oil." With advancements in data analysis, we can now re-analyze previous datasets. Data gathering is expensive and time-consuming, but some datasets can be...
20 June 2024 6,418 2 View
How to calculate the monetary impact of lifetime cancer risk due to exposure to an IARC Group 1 chemicals? If a carcinogenic pollutant is associated with more than 1 health impact, how to...
14 May 2024 2,913 0 View
I want some good references on modeling the LCL filter in stationary frame in continuous time. (state space) and if a MATLAB code is available that would be great. Thanks
27 April 2024 6,045 2 View
During validation for my study(I am modeling a single cylindrical and tapered pile) I need a Mohr-Coulomb soil model with confining pressure. I have already modeled a Hardening soil model (using...
09 April 2024 6,282 0 View
I need it uopn a reviewer's request to make a 500ns MD
07 February 2024 7,667 3 View
Dear all, We are rearing Spodoptera exigua in the lab to perform assays. We recently started having problems with the health and survival of the larvae which led to the colony being stopped...
04 February 2024 7,511 5 View
"Please help me answer this question."
25 January 2024 2,768 4 View
AI systems can be used to collect and analyze large amounts of data on human emotions, which can help us to better understand the underlying patterns and causes of emotions. They can also be used...
21 January 2024 2,211 10 View
A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...
11 August 2024 9,801 2 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
Hello experts, Does anyone know any free software about retention index prediction ?
08 August 2024 7,403 2 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
I'm working on selecting antibodies against a recombinant protein that has a His-tag. My idea is to first bind the recombinant protein to a HisTRAP column and then use this column for an affinity...
07 August 2024 505 3 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
Hello, Can anyone provide me with the absorption coefficient of methane gas at 7.7 um? Any reference?
06 August 2024 980 5 View
I am analyzing cherts from different sources found within one specific geologic formation using ICP-MS/ES. My committee was asking this question about my analysis. I was not sure how to answer this
05 August 2024 7,902 3 View
There are anaerobic gas pak jars and environment providers in the laboratory that provide anaerobic environmental conditions for the growth of anaerobic bacteria. However, there is no anaerobic...
05 August 2024 4,945 3 View
Have you ever seen a LC-MS/MS method uses both internal standards and external standards (in matrix matching purpose) but the concentrations of internal standards are outside the calibration curve...
05 August 2024 3,084 6 View