Results 141 to 150 of about 69,132 (324)

Regular polygonal systems

Ars Mathematica Contemporanea, 2018
Let M  =  M ( Ω ) be any triangle-free tiling of a planar polygonal region Ω with regular polygons. We prove that its face vector f ( M ) = ( f 3 ,  f 4 ,  f 5 , …) , its symmetry group S ( M ) and the tiling M itself are uniquely determined by its boundary angles code c a ( M ) =  c a ( Ω ) = ( t 1 , …,  t r ) , a ...
openaire   +3 more sources

New Arabic Records From Cairo on Supernovae 1181 and 1006

Astronomische Nachrichten, EarlyView.
ABSTRACT The remnant of the historical supernova SN 1181 is under discussion: While the previously suggested G130.7+3.1 (3C58) appears too old (3000–5000 year), the unusual star IRAS00500+6713 with a surrounding nebula (Pa‐30) has an expansion age not inconsistent with a SN Iax explosion in ad 1181 under the assumption that neither acceleration nor ...
J. G. Fischer, H. Halm, R. Neuhäuser, D. L. Neuhäuser   +3 more
wiley   +1 more source

Statistical and Predictive Analysis of Supported Catalytically Active Metal Solutions (SCALMS) in Propane Dehydrogenation

ChemCatChem, EarlyView.
A catalyst‐informatics framework for Ga‐Pt supported liquid alloy in propane dehydrogenation is presented. The framework, combining statistical analysis and machine learning, identifies key factors influencing catalyst performance and highlights the need for larger datasets for predictive design.
Angelika Owsienko, Philipp Stangl, Nnamdi Madubuko, Richard Lenz, Marco Haumann   +4 more
wiley   +1 more source

On the Lateral Vibration of Curved-sided Regular Polygonal Plate, clamped at its Boundary.

, 1944
Masayuki Yamamoto
openalex   +2 more sources

ARC Expands the DAAM1 Microexon‐Mediated Actin–RHOA/ROCK Interplay

Cytoskeleton, EarlyView.
ABSTRACT Actin cytoskeleton and its dynamics play a crucial role in synaptic function, influencing dendritic spines' structural and functional plasticity. Recent findings unveiled the significance of alternative splicing of a neural‐specific microexon in DAAM1 in modulating actin's role in synaptic processes.
Patryk Poliński, Marta Miret Cuesta, Manuel Irimia   +2 more
wiley   +1 more source

On the Shearing Stress Distribution of a Cantilever whose Cross-section is a Regular Polygon with a Circular Hole in its Center by Terminal Transverse Load

, 1951
Tatsuji Kawaguchi
openalex   +2 more sources

Meningeal Solitary Fibrous Tumor: A Cytological Report With Emphasis on the Usefulness of Immunocytochemical Analysis for STAT6

Diagnostic Cytopathology, EarlyView.
ABSTRACT Solitary fibrous tumors (SFTs) are rare neoplasms characterized by spindle neoplastic cell proliferation within collagenous stroma and prominent dilated vasculature. They present a wide histopathological spectrum, ranging from hypocellular lesions with a rich collagenous stroma to hypercellular lesions with scant stroma.
Hiroyuki Okanishi, Mitsuaki Ishida, Naoto Kohno, Isako Kataoka, Mari Tomiuka, Mayumi Uragami, Shizuka Ono, Chihiro Deguchi, Reika Takeda, Yoshitaka Kurisu, Yoshinobu Hirose   +10 more
wiley   +1 more source

Hybrid analytical model for air‐gap magnetic field prediction of surface‐mounted permanent magnet motors with a quasi‐regular polygon rotor [PDF]

, 2023
Chuntao Chen, Xinzhen Wu, Xibo Yuan, Zhuang Ding, Xiaoqin Zheng   +4 more
openalex   +1 more source

Wetlands as environments of early human occupation: A new classification for freshwater palaeowetlands

The Depositional Record, EarlyView.
A new classification for inland freshwater palaeowetlands to be used in the field or core laboratory by sedimentologists, providing examples from the Guadix Basin (southern Spain). Abstract Present wetlands have proven to be delicate, biodiverse ecosystems, that are natural sinks for CO2 and act as good indicators for climate changes.
S. Pla‐Pueyo, E. H. Gierlowski‐Kordesch   +1 more
wiley   +1 more source

Note on the Chromatic Number of Minkowski Planes: The Regular Polygon Case [PDF]

, 2023
Panna Gehér
openalex   +1 more source