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Revista Ibero-Americana de Estudos em Educação, 2016 This article is in an effort to summarize the main features of social theory, referred to as Critical Theory, theoretical approach known by the Traditional Theory critical, especially as it is situated as a critical stance against capitalist society in ...
Cícera Andréia de Souza +2 more
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Morse theory without critical points [PDF]
Rocky Mountain Journal of Mathematics, 1989 Let \(X\) be an \(n\)-dimensional differentiable manifold and \(f: X\to\mathbb{R}\) a real-valued \(C^ \infty\) function without critical points. The topological pair \((X,A)\) is said to be regular if \(H_ .(X,A)=0\). The fiber \(f^{-1}(c)\) is said to be critical if for every positive \(\varepsilon\) there is some \(\delta ...
openaire +3 more sources
A New Type of Quantum Criticality in the Pyrochlore Iridates
, 2014 Magnetic fluctuations and electrons couple in intriguing ways in the vicinity of zero temperature phase transitions - quantum critical points - in conducting materials.
Balents, Leon +2 more
core +4 more sources
Quantum critical behavior in itinerant electron systems -- Eliashberg theory and instability of a ferromagnetic quantum-critical point [PDF]
, 2006 We consider the problem of fermions interacting with gapless long-wavelength collective bosonic modes. The theory describes, among other cases, a ferromagnetic quantum-critical point (QCP) and a QCP towards nematic ordering.
A. V. Chubukov +11 more
core +1 more source
Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source
Multiple solutions for a class of anisotropic p⃗-Laplacian problems
Boundary Value Problems, 2023 In this paper we present some existence and multiplicity results for a class of anisotropic p⃗-Laplacian problems with Dirichlet boundary conditions. In particular, the existence of three solutions is pointed out.
G. Bonanno, G. D’Aguì, A. Sciammetta
doaj +1 more source
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
wiley +1 more source
FEBS Letters, EarlyView.This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva +5 more
wiley +1 more source
DC conductivities with momentum dissipation in Horndeski theories
Journal of High Energy Physics, 2017 In this paper, we consider two four-dimensional Horndeski-type gravity theories with scalar fields that give rise to solutions with momentum dissipation in the dual boundary theories.
Wei-Jian Jiang +3 more
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Note on New Massive Gravity in $AdS_3$
, 2009 In this note we study the properties of linearized gravitational excitations in the new massive gravity theory in asymptotically $AdS_3$ spacetime and find that there is also a critical point for the mass parameter at which massive gravitons become ...
A. Maloney +37 more
core +1 more source