Results 111 to 120 of about 22,061,458 (356)

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

open access: yesFEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil   +4 more
wiley   +1 more source

Fine structure and formation mechanism of particulate phase-inversion poly(vinylidene fluoride) membranes

open access: yes, 2013
The structure and formation mechanism of a microporous phase-inversion poly(vinylidene fluoride) (PVDF) membrane exhibiting a relatively loosely packed agglomerate of semicrystalline globules are explored.
Cheng, Liao-Ping   +1 more
core   +1 more source

Ultra-high energy harvester performance in KNN-based textured piezoceramics via multiscale reconfiguration design

open access: yesJournal of Advanced Ceramics
The lower electromechanical performance of lead-free piezoelectric materials remains a critical bottleneck impeding their ability to replace lead-based materials in energy harvesting.
Caixia Zhu   +5 more
doaj   +1 more source

Electrical properties and luminescence properties of 0.96(K0.48Na0.52)(Nb0.95Sb0.05)–0.04Bi0.5(Na0.82K0.18)0.5ZrO3-xSm lead-free ceramics

open access: yesJournal of Advanced Ceramics, 2020
In this paper, Sm-doped 0.96(K0.48Na0.52)(Nb0.95Sb0.05)–0.04Bi0.5(Na0.82K0.18)0.5ZrO3 (abbreviated as KNSN–0.04BNKZ) lead-free piezoelectric ceramics were prepared by conventional solid-state sintering method and the effects of Sm2O3 on the phase ...
Wei Li   +8 more
doaj   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

open access: yesFEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure   +3 more
wiley   +1 more source

The phase response of primary auditory afferents in a songbird (Sturnus vulgaris L.) [PDF]

open access: yes, 1988
The effects of stimulus frequency and intensity on phase-locking characteristics of cochlear ganglion cells were studied in the starling. All cells showed phase-locking to tone stimuli within their response area. Phase-locking at CF is found on average 9
Gleich, Otto, Narins, P. M.
core   +1 more source

Sm2O3-doped 0.28PIN-0.32PZN-(0.4-x)PZ-xPT piezoelectric ceramics with high Curie temperature and piezoelectric constant

open access: yesJournal of Asian Ceramic Societies
In this work, Sm2O3-doped 0.28PIN-0.32PZN-(0.4-x)PZ-xPT (Sm-PbIZZT) ceramics were prepared by using the solid-state method. The microstructure and piezoelectric properties of Sm-PbIZZT were systematically analyzed. The results show that as the PT content
Xiaoyu Xu   +10 more
doaj   +1 more source

THE STUDDING OF INFLUENCE OF GAS CONCENTRATION IN A VACUUN CHAMBER ON MICROSTRUCTURE AND PHISICO-MECHANICAL PROPERTIES OF FILMS BASED ON THE Ti-Al-N [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2012
The effect of nitrogen ( N2 ) in the gas mixture on the phase composition, surface morphology, structural characteristics and physico-mechanical properties of films based on Ti-Al-N, formed by pulsed magnetron sputtering has been investigated ...
T.O. Soshina
doaj  

Baryon number fluctuations and the phase structure in the PNJL model

open access: yes, 2018
We investigate the kurtosis and skewness of net-baryon number fluctuations in the Polyakov loop extended Nambu–Jona-Lasinio (PNJL) model, and discuss the relations between fluctuation distributions and the phase structure of quark-gluon matter.
G. Shao   +3 more
semanticscholar   +1 more source

The human gut microbiome across the life course

open access: yesFEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero   +4 more
wiley   +1 more source

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