Results 41 to 50 of about 46,849 (195)
Testing for polytomies in phylogenetic species trees using quartet frequencies
, 2018 Phylogenetic species trees typically represent the speciation history as a bifurcating tree. Speciation events that simultaneously create more than two descendants, thereby creating polytomies in the phylogeny, are possible.
Mirarab, Siavash, Sayyari, Erfan
core +2 more sources
In the Light of Deep Coalescence: Revisiting Trees Within Networks [PDF]
, 2016 Phylogenetic networks model reticulate evolutionary histories. The last two decades have seen an increased interest in establishing mathematical results and developing computational methods for inferring and analyzing these networks.
Nakhleh, Luay, Yu, Yun, Zhu, Jiafan
core +1 more source
BMC Molecular and Cell Biology, 2019 Background Astral microtubules emanating from the mitotic centrosomes play pivotal roles in defining cell division axis and tissue morphogenesis. Previous studies have demonstrated that human transforming acidic coiled-coil 3 (TACC3), the most conserved ...
Resmi Rajeev +4 more
doaj +1 more source
ABEI Journal, 2002 Patricia Nolan. Travelling. (France: Le Castor Astral in Paris, France, 2001).
Renato Sandoval
doaj +1 more source
Radiation‐Resistant Aluminum Alloy for Space Missions in the Extreme Environment of the Solar System
Advanced Materials, EarlyView.A novel ultrafine‐grained aluminum crossover alloy exhibits unprecedented radiation resistance and mechanical stability under extreme irradiation doses up to 100 dpa. The exceptional resilience arises from thermodynamically stable T‐phase precipitates, enabling lightweight structural materials for next‐generation spacecraft and extraterrestrial ...
Patrick D. Willenshofer +9 more
wiley +1 more source
Journal of Radiation Research and Applied SciencesIn this investigation, the impact of water thickness and various types of concrete materials, each characterized by different densities and elemental compositions, is examined for their role in shielding a radiation generator based on Inertial ...
Mahmoud Bakr +4 more
doaj +1 more source
ABEI Journal, 2005 Patricia Nolan. Strip-Tease. Le Castor Astral. Letres, 2005. 80pp. ISBN 9 782859 205911.
Fred Johnston
doaj +1 more source
A Pushing Mechanism for Microtubule Aster Positioning in a Large Cell Type
Cell Reports, 2020 Summary: After fertilization, microtubule (MT) sperm asters undergo long-range migration to accurately position pronuclei. Due to the large sizes of zygotes, the forces driving aster migration are considered to be from pulling on the astral MTs by dynein,
Johnathan L. Meaders +2 more
doaj +1 more source
Time-lapse video microscopy analysis reveals astral microtubule detachment in the yeast spindle pole mutant cnm67 [PDF]
, 2000 Saccharomyces cerevisiae cnm67Delta cells lack the spindle pole body (SPB) outer plaque, the main attachment site for astral (cytoplasmic) microtubules, leading to frequent nuclear segregation failure.
Hoepfner, D. +2 more
core +1 more source
Self‐Regulating Sodium‐Ion Battery Materials: From Phase Reconstruction to Functional Activation
Advanced Materials, EarlyView.Self‐regulating sodium‐ion batteries hinge on programmable phase behavior in layered oxides, interphases that renew without growth, and electrolytes that steer solvation and chemistry. This review distills mechanisms into design rules that span composition, site and entropy tuning, and self‐buffering anodes, linking operando evidence to choices and ...
Hong Gao +10 more
wiley +1 more source