Results 31 to 40 of about 94,498 (240)
This essay first appeared in German in Magdalena Tzaneva, ed. Nachtflug der Eule: 150 Stimmen zum Werk von Niklas Luhmann. Gedenkbuch zum 15. Todestag von Niklas Luhmann (8. Dezember 1927 Lüneburg – 6. November 1998 Oerlinghausen). Berlin: LiDi EuropEdition (2013), 73–100. A shorter version of the essay was published in Hans-Georg Soeffner, and ...
openaire +4 more sources
Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
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
Time after time – circadian clocks through the lens of oscillator theory
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source
Abstract This chapter introduces the principle of Fragility: if you know p, then for all you know, you omega know p. The chapter develops six benefits of Fragility: it explains how assertion and action could require omega knowledge; it avoids revenge versions of counterexamples to KK; it avoids issues about chains of testimony and ...
Valerio Paolo Mosco, Damiano Di Mele
+9 more sources
CCL5 Induces a Sarcopenic-like Phenotype via the CCR5 Receptor
Sarcopenia corresponds to a decrease in muscle mass and strength. CCL5 is a new myokine whose expression, along with the CCR5 receptor, is increased in sarcopenic muscle.
Francisco Aguirre +14 more
doaj +1 more source
Fragilité, vulnérabilité et ressorts de santé des personnes âgées
À partir d’observations socio-ethnographiques à domicile, cet article explore les conditions d’application des notions de fragilité, vulnérabilité et atouts / ressorts de santé au repérage, au suivi et à la prévention de la perte d’autonomie des ...
Hervé Michel +4 more
doaj +1 more source
This introductory article shows how the prism of fragility can be used as a way to conceptually and empirically further the research work that has foregrounded the material part of human societies by focusing on the agency of artifacts and the strength ...
Jérôme Denis, David Pontille
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The newfound relationship between extrachromosomal DNAs and excised signal circles
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley +1 more source
Cryptochrome and PAS/LOV proteins play intricate roles in circadian clocks where they act as both sensors and mediators of protein–protein interactions. Their ubiquitous presence in signaling networks has positioned them as targets for small‐molecule therapeutics. This review provides a structural introduction to these protein families.
Eric D. Brinckman +2 more
wiley +1 more source
State-of-the-Art Review on the Seismic Performance Assessment of On-Ground Steel Cylindrical Tanks
Steel cylindrical tanks are vital structures for storing various types of liquid in industrial plants or as a component in a water distributing system. As they sometimes are used to store toxic, flammable, and explosive material, their inapt performance ...
Mehran S. Razzaghi
doaj +1 more source

