1,614 research outputs found
Quantitative characterization of p-sites from the human t-lymphocyte phosphoproteome using isotopic labeling and mass spectrometry
Comunicaciones a congreso
The study of the human primary T-Lymphocite phosphoproteome
Comunicaciones a congreso
Efecto de la activación linfocitaria sobre el fosfoproteoma del linfocito T primario humano: estudio mediante marcaje isotópico y espectrometría de masas
Comunicaciones a congreso
Differential expression analysis in spinal muscular atrophy patients
Comunicaciones a congreso
MRI Superresolution Using Self-Similarity and Image Priors
In Magnetic Resonance Imaging typical clinical settings, both low- and high-resolution images of different types are routinarily acquired. In some cases, the acquired low-resolution images have to be upsampled to match with other high-resolution images for posterior analysis or postprocessing such as registration or multimodal segmentation. However, classical interpolation techniques are not able to recover the high-frequency information lost during the acquisition process. In the present paper, a new superresolution method is proposed to reconstruct high-resolution images from the low-resolution ones using information from coplanar high resolution images acquired of the same subject. Furthermore, the reconstruction process is constrained to be physically plausible with the MR acquisition model that allows a meaningful interpretation of the results. Experiments on synthetic and real data are supplied to show the effectiveness of the proposed approach. A comparison with classical state-of-the-art interpolation techniques is presented to demonstrate the improved performance of the proposed methodology
Elements of algebraic geometry and the positive theory of partially commutative groups
The first main result of the paper is a criterion for a partially commutative group G to be a domain. It allows us to reduce the study of algebraic sets over G to the study of irreducible algebraic sets, and reduce the elementary theory of G (of a coordinate group over G) to the elementary theories of the direct factors of G (to the elementary theory of coordinate groups of irreducible algebraic sets). Then we establish normal forms for quantifier-free formulas over a non-abelian directly indecomposable partially commutative group H. Analogously to the case of free groups, we introduce the notion of a generalised equation and prove that the positive theory of H has quantifier elimination and that arbitrary first-order formulas lift from H to H * F, where F is a free group of finite rank. As a consequence, the positive theory of an arbitrary partially commutative group is decidable
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