Glycosphingolipids occur in most hi her organisms as 200 compounds in this class have been isolated and chemically characterized. In this aper, we compare the structures of several complex glycosphingoEpids and discuss the utilit of fast atom bombardment mass spectrometry in the MSldS mode with collision-assisted dissociation of the ceramide ion to study details of the ceramide structure. The f...

Abstract – The Fast Fourier Transform (FFT) is a critical part in communication systems, because it can greatly reduce the computation requirement for signal processing. This paper presents the design of a FFT processor using NULL Convention Logic (NCL), which has been shown to have power consumption advantages over its synchronous counterpart. Performance metrics for the NCL FFT processor are ...

The relationship of permanent magnetic material characteristic parameters was analyzed, and a simulation method of a permanent magnet synchronous motor (PMSM) rotor demagnetization fault was put forward. Based on this, a simulation model of the PMSM under partial demagnetization and uniform demagnetization fault were established, and different degrees demagnetization fault was simulated. Relati...

Due to the lack of an appropriate symmetry in the acquisition geometry, generalised bistatic SAR cannot benefit from the two main properties of low-to-moderate resolution monostatic SAR: azimuth-invariance and topography-insensitivity. Precise accommodation of azimuth-variance and topography is a real challenge for efficent algorithms working in the Fourier-domain, but can be quite naturally ha...

Models for spatial autocorrelation and cross-correlation depend on the distance and direction separating two locations, and are constrained so that for all possible sets of locations, the covariance matrices implied from the models remain nonnegative-definite. Based on spatial correlation, optimal linear predictors can be constructed that yield complete maps of spatial fields from incomplete an...

In proton radiation therapy nuclear reactions of highenergy protons hitting beam line components (e.g. collimators or other beam shaping devices) lead to the production of secondary neutrons which may result in significant neutron dose equivalent values (typically of the order of mSv per treatment Gy), depending on the treatment techniques [1]. For scanning devices the neutron dose contribution...

Quality control is applied in production process. The good condition of electrical machines can be obtained by using diagnostics. There are a lot of methods that can be used for diagnostics of electrical machines. In the literature, standard methods are based on a study of electrical signals. This project work start with a novel automated practical implementation for non contiguous rotor side b...

In order to resolve the uncertainties about the primary structure of human myelin basic protein at residues 45-89, the sequence of this peptide and its tryptic fragments were reinvestigated by fast atom bombardment mass spectrometry. The sequence at positions 77-78 was found to be His-Gly and the sequence at positions 83-84 was shown to be Glu-Asn. The Ser at position 56 was not phosphorylated,...

Nitrogenase in Rhodospirillum rubrum is inactivated in vivo by the covalent modification of the Fe protein with a nucleotide. The preparation of two modified peptides derived from proteolytic digestion of the inactive Fe protein is described. The modifying group is shown to be adenosine diphosphoribose, linked through the terminal ribose to a guanidino nitrogen of arginine. The structural featu...

We consider the class of Iterative Shrinkage-Thresholding Algorithms (ISTA) for solving linear inverse problems arising in signal/image processing. This class of methods is attractive due to its simplicity, however, they are also known to converge quite slowly. In this paper we present a Fast Iterative Shrinkage-Thresholding Algorithm (FISTA) which preserves the computational simplicity of ISTA...