Is there a way to batch-convert mass spectrometry cdf files to mzML files?

I have a set of roughly one hundred cdf files from a mass spectrometry experiment. I would like to analyse them using MetaboAnalystR, which requires mzML files as input. I know I can convert each...

28 March 2020 1,794 6 View

What is the best methodology for working with temporal data holes and deep neural networking?

Any data science and/or remote sensing experts have any insight pertaining to multivariate regression and deep neural networking with large feature set inputs and variable temporal data holes...

03 February 2020 5,246 2 View

Why are surrogates only added at the time of extraction, not at the time of sample collection and processing?

I am working on a study on pharmaceutical fate and uptake in plants. We are wondering about analyte degradation during the initial transport, processing, and storage of the soil and plant samples,...

30 October 2019 3,540 1 View

How is depth information encoded in the frequency of spectral interferograms obtained by Spectral domain optical coherence tomography?

I am trying to understand how the depth information in SD-OCT A-scans is obtained over distances far in excess of the source coherence length. From what I have gathered so far, it seems that the...

10 June 2019 6,783 2 View

How can I improve laser penetration on a confocal microscope in aortic tissue?

I am currently doing an experiment to image thick (~100 micron) cut pieces of aorta and am having a few problems. To imagine the shape of my tissue, I am cutting rings or bands of aorta and...

01 August 2018 920 3 View

Can BLAST perfrom a search including IUPAC ambiguity codes?

23 June 2017 8,927 3 View

What is the expected number of connected components in an Erdos-Renyi graph?

Let G(N,p) be an Erdos-Renyi graph, where N is the number of vertices, and p is the probability that two distinct vertices form an edge. If I plot 1-b0/N over log(p), then I obtain a curve which...

23 November 2016 6,443 3 View

Database of reagent off-target effects?

I remember seeing a recent website/database that listed commonly used cell culture and research chemical agents and their known off-target effects. Can anyone help me re-discover the site?

17 April 2016 5,311 2 View

How to conduct measured path analysis using Lisrel?

I am trying to understand how to use Lisrel to produce the best model for my survey data. I have read through the guides provided by the website but still do not seem to understand the...

19 February 2015 3,277 5 View

How should one handle 0 or low cell sizes in ordinal/multinomial logistic regression?

Hi all, I am running into a snag creating a path analysis model using ordinal and multinomial logistic regression. I am using scaled scores as predictors of either an ordinal (OnlineSatisfaction,...

12 February 2015 1,994 8 View

Could you recommend any books about Number Theory?

Beginner level books. High level books. Analytical Number Theory. Algebraic Number Theory. Combinatorical Number Theory. Books about partitions. Books about primes.

03 March 2021 7,174 5 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

Why can't make aluminum nitride film successfully by use sputter?

We use reactive sputtering process to make aluminum nitride film, and want to make c-axis aluminum nitride film on a silicon substrate, but the crystal orientation cannot be seen with...

03 March 2021 7,975 3 View

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 View

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

How do I determine the degree of polymerization of PEG 400 based on NMR integration?

Hello, I am working on the photocatalytic degradation of PEG 400. I would like to know if it's possible to determine the degree on polymerization based on NMR integration, or by the MW of the...

02 March 2021 6,186 3 View

How to polymerize TEOS?

I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...

02 March 2021 1,404 6 View

Which fluorescent dye to use for measuring total ROS production?

Is DCFDA appropriate for measuring total ROS production, or can it only detect certain types of ROS? If I want to measure total ROS production, which dye should I use?

01 March 2021 9,447 3 View

How to check the uv-vis absorption of nanoparticle by surface plasmon resonance?

I try to check the uv-vis absorption of Indium nanoparticle. Now I am measuring in solution, can I measure it in the form of a film?

01 March 2021 930 3 View

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View