Results 81 to 90 of about 1,058,735 (299)
Advanced Healthcare Materials, EarlyView.Open‐port, barrier‐free microfluidic device for modeling early metastatic progression. A centrally positioned tumor spheroid releases invasive cells that migrate through the surrounding matrix and intravasate into endothelialized lateral channels.
Vira Sharko +7 more
wiley +1 more source
Jixie chuandong, 2014 Hyperboloidal-type normal circular-arc gear is a novel technology in which the circular-arc tooth profile is developed into the gear pair with crossed axis.Based on the transmission theory and the mismatch theory,the design method of hyperboloidal-type ...
张小萍, 蔡雄, 杨文祥, 陈厚军
doaj
Hadwiger's Conjecture On Circular Arc Graphs
, 2007 Conjectured in 1943, Hadwiger’s conjecture is one of the most challenging open problems in graph theory. Hadwiger’s conjecture states that if the chromatic number of a graph G is k, then G has a clique minor of size at least k.
Belkale, Naveen
core
Linear-time recognition of Helly circular-arc models and graphs [PDF]
, 2011 A circular-arc model M is a circle C together with a collection A of arcs of C. If A satisfies the Helly Property then · is a Helly circular-arc model. A (Helly) circular-arc graph is the intersection graph of a (Helly) circular-arc model.
Joeris, Benson L. +4 more
core +1 more source
Bioprinted Stiffness‑Tunable Pancreatic Microniches to Decode Early Tumor Initiation Mechanisms
Advanced Healthcare Materials, EarlyView.Stiffness‐tunable GelMA microniches generated by microvalve bioprinting preserve wild‐type acinar identity while revealing a nonlinear, Kras‐dependent response to matrix mechanics. Intermediate stiffness promotes acinar‐to‐ductal metaplasia and proliferation, defining a permissive mechanical window.
Aurelien Mazet +11 more
wiley +1 more source
Clique graphs of Helly circular-arc graphs
, 2001 Clique graphs of several classes of graphs have been already characterized. Trees, interval graphs, chordal graphs, block graphs, clique-Helly graphs are some of them. However, no characterization of clique graphs of circular-arc graphs and some of their
Min Chih Lin, Guillermo Durán
core
Ferroelectric Quantum Dots for Retinomorphic In‐Sensor Computing
Advanced Materials, EarlyView.This work has provided a protocol for fabricating retinomorphic phototransistors by integrating ferroelectric ligands with quantum dots. The resulting device combines ferroelectricity, optical responsiveness, and low‐power operation to enable adaptive signal amplification and high recognition accuracy under low‐light conditions, while supporting ...
Tingyu Long +26 more
wiley +1 more source
Jixie chuandong, 2021 The contact characteristics of a nutation drive with double circular-arc spiral bevel gears are extremely sensitive to installation errors. To reveal the effects of installation errors on contact characteristics，the tooth surface contact analysis of ...
Qin Chen +4 more
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Advanced Materials, EarlyView.Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu +3 more
wiley +1 more source
Study on a New Rotor Profile with Convex Head for Radial Seal andEccentric Main Circular Arc
Jixie chuandong, 2019 For the need to increase effect of volume utilization rate and volume efficiency for roots pump，a new profile geometry of circular arc rotors with seal convex head and eccentric circular arc is proposed.
Li Yulong Liu Ping Zang Yong Li Xiurong Zhao Yan
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