Results 81 to 90 of about 4,466,602 (311)
On the centralizer of the centralizer of a matrix
Linear Algebra and its Applications, 1997 For \(S,T\subset M_n(F)\) (where \(M_n(F)\) is the algebra of all \(n\times n\) matrices over an arbitrary field \(F\)) let \({\mathcal C}_T(S)= \{B\in T: AB=BA\) for all \(A\in S\}\). For each \(A\in M_n(F)\), it is well-known that \({\mathcal C}_{M_n(F)}({\mathcal C}_{M_n(F)}(A))= F[A]\), the algebra of polynomials in \(A\) over \(F\).
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Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation
FEBS Letters, EarlyView.Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe +3 more
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Functional embedding predicts the variability of neural activity
Frontiers in Systems Neuroscience, 2011 Neural activity is irregular and unpredictable, yet little is known about why this is the case and how this property relates to the functional architecture of the brain.
Bratislav eMisic +7 more
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Node centrality measures are a poor substitute for causal inference
Scientific Reports, 2018 Network models have become a valuable tool in making sense of a diverse range of social, biological, and information systems. These models marry graph and probability theory to visualize, understand, and interpret variables and their relations as nodes ...
F. Dablander, M. Hinne
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FEBS Letters, EarlyView.We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee +3 more
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The Central Hull and Central Kernel in JBW*-Triples
Journal of Algebra, 2002 Let \(A\) be a JBW*-triple. The authors introduce the concepts of central hull \(c(L)\) and central kernel \(k(L)\) of an arbitrary subspace \(L\) of \(A.\) These are, respectively, the smallest element of the complete Boolean algebra \({\mathcal ZI}(A)\) of the weak*-closed ideals in \(A\) containing \(L\) and the largest element in \({\mathcal ZI}(A)\
Edwards, C, Ruttimann, G
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A systematic survey of centrality measures for protein-protein interaction networks
bioRxiv, 2017 BackgroundNumerous centrality measures have been introduced to identify “central” nodes in large networks. The availability of a wide range of measures for ranking influential nodes leaves the user to decide which measure may best suit the analysis of a ...
Minoo Ashtiani +6 more
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FEBS Letters, EarlyView.We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
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Journal of Clinical Neuroscience, 2012 Central neurocytomas (CN) are rare intraventricular tumors with prominent neuronal differentiation. CN commonly arise in the lateral ventricles of young adults who predominantly present with raised intracranial pressure. Few studies have described the clinical, pathological, and radiological features of these tumors, and those that have are typically ...
Haihui, Chen +3 more
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Sociologies, 2016 This article offers a reflection around the concept of popular centrality, based on an ethnographic investigation led in Roubaix. It shows that as a "peripheral" territory (that is as a de-industrialized and relegated territory), Roubaix has become ...
Collectif-Rosa-Bonheur
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