TBA contamination, anyone has a cure to get it out of your UPLC?

Hi, I have been doing some ion pairing chromatography, with TBA (tributylamine). Seems now that when i measure in ESI+ there is a huge background of TBA (m/z 186.2) and i can't get it out of the...

05 September 2017 3,749 6 View

Does anyone have experience with the synthesis of meso-mandelide?

I'm using the protocol of Tianqi et al. (dimerisation of mandelic acid by 3 days of reaction in mixed xylenes while removing water byproduct by means of a Dean-Stark trap), but for some reason, on...

02 March 2014 7,905 5 View

Braive instruments filmographe doctor blade manual?

02 March 2013 9,015 1 View

Antigen specific T cells home to draining lymph nodes after s.c. immunization. How long will it take, before they can be found again in the circulation?

Our immunization schedule is: 3 s.c. shots of antigen on Alum (d0, d14, d28) I would like to know if anybody has tested the re-appearance of memory T cells in blood in a time course experiment....

28 October 2012 429 3 View

I need to image mesoporous silica nanoparticles that are in ~100 nm size and do high resolution TEM to look at mesopores. what grids should I use?

Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru

02 March 2021 1,787 2 View

High aspect ratio hexahedral mesh optimization solver?

I am interested in evaluating mesh optimization solvers that converge to high aspect ratio unstructured hexahedral grids. In other words, I am interested in a solver that optimizes warpage,...

26 February 2021 7,279 2 View

How to clean up TEM grid with plasma cleaner?

I need to clean the hydrocarbon contamination on the carbon substrate of TEM grid. However, I heard that substrate could be broken by the powerful plasma. My substrate is pure carbon, with ~3nm,...

23 February 2021 3,262 5 View

Best excel chart to compare algorithms' running time?

Hi I want to compare the running time of robotic path planning algorithms. The grid size is 8X8. I have 100 scenarios of start and goal positions.. Each scenario is run in three obstacles ratio...

22 February 2021 621 1 View

How to Measure Consumer Willingness To Change from petroleum-fueled vehicle to electric vehicle?

I wanted to calculate the probability of one consumer shifting from using a petroleum-fueled vehicle to an electric vehicle. Since my background is in engineering I do not know much about how to...

15 February 2021 9,190 5 View

What are the popular techniques for pre-processing measurement data in Smart Grid/Power System?

The data collected from various measurement devices often contains erroneous values - such as noise, missing values, etc. What are the popular techniques for pre-processing measurement data in...

14 February 2021 4,642 2 View

How to extract the yearly cash flow data (not time-series) from HomerPro in Excel? Also how to extract the monthly average electric production data?

I want to plot the monthly average electric production data and cash flow data in another software to get a more clear graph. For this, I need to extract the monthly or yearly data and not the...

11 February 2021 2,740 2 View

Grid connected inverter using virtual synchronous machine?

Hi everybody, currently, I am working on the grid-connected inverter. I want to make my grid-connected PV system a PLL-less system. I have studied some reachers are implementing a virtual...

07 February 2021 6,078 2 View

Any open-access dataset for battery systems from the field available?

Battery dataset is more and more critical for battery research. Although some dataset from the lab test is available online, rare information about the dataset from the battery systems in electric...

05 February 2021 8,372 1 View

Distribution of modes fields ?

Hi, We find a specific distribution of electric fields in structure for different frequencies which can be seen using em solvers and known as modes. I would like to know how we can choose the...

04 February 2021 10,043 3 View