Results 51 to 60 of about 284,079 (248)

Efeito da densidade de plantas e da adubação NPK na produção inicial de palmito de pupunheira Effect of density and fertilization NPK on heart-of-palm production of peach palm

open access: yesRevista Brasileira de Ciência do Solo, 2005
Avaliaram-se os efeitos da densidade de plantas e doses de adubação na produção de palmito de pupunheira, em condições de campo, na Fazenda Yuricam, Rio Preto da Eva (AM). O delineamento experimental foi de blocos casualizados com três repetições, com os
Kaoru Yuyama   +3 more
doaj   +1 more source

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

n-spaces

open access: yesCommunications Faculty Of Science University of Ankara Series A1Mathematics and Statistics, 2020
An incidence structure with neighbour relation \(\mathbb{S}_n(R)\) over a local ring \(R\), called \(n\)-space, is defined. For \(n=2\), this is the projective Klingenberg plane over \(R\), but for \(n>2\) it is not a Klingenberg structure (with an ordinary projective space as epimorphic image).
openaire   +6 more sources

Realizing spaces as classifying spaces [PDF]

open access: yesProceedings of the American Mathematical Society, 2016
Which spaces occur as a classifying space for fibrations with a given fibre? We address this question in the context of rational homotopy theory. We construct an infinite family of finite complexes realized (up to rational homotopy) as classifying spaces. We also give several non-realization results, including the following: the rational homotopy types
Lupton, Gregory, Smith, Samuel Bruce
openaire   +2 more sources

Function‐driven design of a surrogate interleukin‐2 receptor ligand

open access: yesFEBS Letters, EarlyView.
Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang   +9 more
wiley   +1 more source

Coupling Between Separate Phases of Coaxial Double Circuit Transmission Lines

open access: yesActive and Passive Electronic Components, 1988
The paper studies the so-called coaxial overhead transmission lines. The concentric phases are considered. The mathematical analysis for voltage and current is presented.
M. Hamed
doaj   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
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

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
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

Conserved structural motifs in PAS, LOV, and CRY proteins regulate circadian rhythms and are therapeutic targets

open access: yesFEBS Letters, EarlyView.
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

Spaced cognitive training promotes training transfer

open access: yesFrontiers in Human Neuroscience, 2014
Cognitive training studies yield wildly inconsistent results. One dimension on which studies vary is the scheduling of training sessions (Morrison & Chein, 2011).
Zuowei eWang   +5 more
doaj   +1 more source

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