Results 31 to 40 of about 656,245 (262)

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS 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

The effect of spectral filters on reading speed and accuracy following stroke

open access: yesJournal of Optometry, 2013
Purpose: The aim of the study was to determine the effect of optimal spectral filters on reading performance following stroke. Methods: Seventeen stroke subjects, aged 43–85, were considered with an age-matched Control Group (n = 17).
Ian G. Beasley, Leon N. Davies
doaj   +1 more source

Almost sure optimal hedging strategy

open access: yesThe Annals of Applied Probability, 2014
Published in at http://dx.doi.org/10.1214/13-AAP959 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Gobet, Emmanuel, Landon, Nicolas
openaire   +4 more sources

Almost Optimal Cover-Free Families [PDF]

open access: yes, 2017
Roughly speaking, an $(n,(r,s))$-Cover Free Family (CFF) is a small set of $n$-bit strings such that: "in any $d:=r+s$ indices we see all patterns of weight $r$". CFFs have been of interest for a long time both in discrete mathematics as part of block design theory, and in theoretical computer science where they have found a variety of applications ...
Bshouty, Nader H., Gabizon, Ariel
openaire   +2 more sources

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

open access: yesFEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo   +2 more
wiley   +1 more source

Optimality and Almost Optimality of Mixture Stopping Rules

open access: yesThe Annals of Statistics, 1978
It is shown that for a test of a composite hypothesis on the parameter $\theta$ of an exponential family of distributions, mixture stopping rules are almost optimal with respect to certain criteria of optimality and a unique stopping rule is to be found among them which is optimal with respect to another type of optimality.
openaire   +2 more sources

Optimal States and Almost Optimal Adaptive Measurements for Quantum Interferometry [PDF]

open access: yesPhysical Review Letters, 2000
4 pages, 4 figures, journal ...
Berry, D. W., Wiseman, H. M.
openaire   +4 more sources

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

open access: yesFEBS 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

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

Study on the constructions of optimal almost quaternary sequences with period 2q

open access: yesTongxin xuebao, 2019
Based on the Chinese remainder theorem and cyclotomic classes of order 4,the constructions of almost quaternary sequences with period N=2q (where q is an odd prime) was studied.According to the number of “0” in the two positions y(0) and y(q),three types
Xiuping PENG   +3 more
doaj   +2 more sources

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