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Rescooped by Sanjay Kumar from opencl, opengl, webcl, webgl
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OpenCL Fast Fourier Transform | hgpu.org

OpenCL Fast Fourier Transform | Computer science, FFT, nVidia, OpenCL, Package, Tesla M2070


Via Mikael Bourges-Sevenier
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Rescooped by Sanjay Kumar from Mass Spectrometry Daily
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Elemental Composition Validation from Stored Waveform Inverse Fourier Transform (SWIFT) Isolation FT-ICR MS Isotopic Fine Structure

Journal: Journal of The American Society for Mass Spectrometry ArticleTitle: Elemental Composition Validation from Stored Waveform Inverse Fourier Transform (SWIFT) Isolation FT-ICR MS Isotopic Fine Structure...

Via Sasa Miladinovic
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Sasa Miladinovic's curator insight, August 15, 2013 7:39 AM

Brian M. Ruddy, Gregory T. Blakney, Ryan P. Rodgers, Christopher L. Hendrickson, Alan G. Marshall

 

Abstract

 

Elemental composition assignment confidence in mass spectrometry is typically assessed by monoisotopic mass accuracy. For a given mass accuracy, resolution and detection of other isotopologues can further narrow the number of possible elemental compositions. However, such measurements require ultrahigh resolving power and high dynamic range, particularly for compounds containing low numbers of nitrogen and oxygen (both 15N and 18O occur at less than 0.4 % natural abundance). Here, we demonstrate validation of molecular formula assignment from isotopic fine structure, based on ultrahigh resolution broadband Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). Dynamic range is enhanced by external quadrupole and internal stored waveform inverse Fourier transform (SWIFT) isolation to facilitate detection of low abundance heavy atom isotopologues.

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The Fourier Transform, explained in one sentence

The Fourier Transform, explained in one sentence | FFT | Scoop.it
If, like me, you struggled to understand the Fourier Transformation when you first learned about it, this succinct one-sentence colour-coded explanation from Stuart Riffle probably comes several years too late: Stuart provides a more detailed...
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Image processing with a GPU | Steve on Image Processing

Image processing with a GPU | Steve on Image Processing | FFT | Scoop.it
I'd like to welcome guest blogger Anand Raja for today's post. Anand is a developer on the Image Processing Toolbox team. -Steve Many desktop.
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