I changed the H-ESI needle on TSQ Quantis Mass Spectrometer and found the ion spray current turned down to zero. It was around 31 uA before the change. Does anyone know what caused this issue and how to fix it? Thanks!!!
In order to show people the beauty of control and enhance enthusiasm for learning control theories, are there any good simple systems or platforms to recommend?
05 August 2024 10,033 1 View
Do experts have journals in the field of artificial intelligence and big data that are not indexed by SCI or EI?
05 August 2024 8,836 2 View
I want to perform a CRISPRa/i library screening for candidate regulatory factors that affect pathogenic Th17 differentiation in PBMC. But I am wondering how to define the size of gene library, so...
31 July 2024 2,150 0 View
This research question explores the complex interactions between oral microbes and oral mucosal immune regulation. The diversity and function of oral microbes have important impacts on oral health...
09 July 2024 7,883 0 View
Using magnetron sputtering with an alloy target composed of A:B:C in a 2:1:1 ratio, the resulting thin film composition is A:B:C=1:1:1. How can you achieve a A:B:C=2:1:1 composition? What are some...
24 June 2024 1,605 0 View
Given the energy level diagram of a ruby laser shown in the right figure, where \( R_{02} \) is the pumping rate, and \( \tau_2 \) and \( \tau_1 \) are the lifetimes of levels \( n_2 \) and \( n_1...
23 June 2024 4,855 0 View
Introduction: I am conducting an experiment to investigate the root phenotypes of Arabidopsis Col-0 plants grown under phosphate deficiency conditions. Here, I describe my current methodology and...
19 June 2024 8,774 3 View
I tried to prepare aligned PLLA nanofibers by gap electrospinning method. But after the deposition, when I tried to measure its piezoelectric sensitivity, it actually did not exhibit any...
17 June 2024 9,763 0 View
Can the matter wave theory, which suggests that when matter waves resonate, the energy input from the outside is minimal, be used to solve all superconductivity problems? The matter wave theory,...
17 June 2024 7,957 0 View
till now, there are many superconductors. Is there any relationship between critical temperature of superconductor and the atomic weight & radius? Now the isotope effect is one relationship...
12 June 2024 1,908 3 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
For a grid connected BESS (lets say 100 MW/200 MWh system, LFP battery), if we charge the BESS in such a way that whenever we can access power from the solar that will charge the BESS. Hence it...
01 August 2024 9,902 7 View
I need to Postfix mice brains. I slice the brains using microtome at 40 microns. These are Postnatal days 7, 11, 14, and 21. I am using half the brain for other analysis, so I need to fresh freeze...
31 July 2024 1,122 4 View
EDX analisys
31 July 2024 5,947 2 View
I am working on algal extract to which gas chromatography (Not GC-MS) spectrum I want to discover. My question is can we identify specific compounds using retention time if I compared the RT with...
29 July 2024 8,033 4 View
I have been running a MAGeCK test command on the terminal for a CRISPR screen to rank sgRNAs and genes based on the read count tables. However, I get only the plot of the top-ranked genes...
28 July 2024 9,811 1 View
if you have MRS broth already prepared, what is the manner you will follow for preparing hyper-sweet medium for screening of EPS producer LAB? what the concentration of saccharose or glucose you...
26 July 2024 6,606 0 View