Periodic arrangements of tetrahedra having appearances similar to that of the Boerdijk–Coxeter helix

Autor: Susumu Onaka

Publikováno v: Scientific Reports, Vol 14, Iss 1, Pp 1-8 (2024)

Abstract The Boerdijk–Coxeter helix (BC helix or tetrahelix) is a linear stacking of regular tetrahedra. Although the BC helix exhibits an aperiodic nature, structures resembling the BC helix with periodicity are found in materials. To understand s

Externí odkaz: https://doaj.org/article/6c5657146dee4c73b3dffb0cd05cf90b

Calculating the Segmented Helix Formed by Repetitions of Identical Subunits thereby Generating a Zoo of Platonic Helices

Autor: Robert L. Read

Publikováno v: Mathematics, Vol 10, Iss 14, p 2533 (2022)

Eric Lord has observed: “In nature, helical structures arise when identical structural subunits combine sequentially, the orientational and translational relation between each unit and its predecessor remaining constant.” This paper proves Lord�

Externí odkaz: https://doaj.org/article/984214aaa67d428bb866b81002fc928b

Molecular Disruption of the Power Stroke in the ATP-binding Cassette Transport Protein MsbA

Autor: Doshi, Rupak ¹, Ali, Anam ², Shi, Wilma ³, Freeman, Elizabeth V., Fagg, Lisa A., van Veen, Hendrik W. ⁴

Publikováno v: In Journal of Biological Chemistry 8 March 2013 288(10):6801-6813

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Glass-steel triangulated structures: parametric nonlinear finite-element analysis of in-plane and out-of-plane structural response of triangular laminated glass panels

Autor: Christian Louter, Francesco Laccone, Maurizio Froli

Publikováno v: Journal of architectural engineering (2020). doi:10.1061/(ASCE)AE.1943-5568.0000374
info:cnr-pdr/source/autori:Laccone F.; Louter C.; Froli M./titolo:Glass-steel triangulated structures: parametric nonlinear finite-element analysis of in-plane and out-of-plane structural response of triangular laminated glass panels/doi:10.1061%2F(ASCE)AE.1943-5568.0000374/rivista:Journal of architectural engineering/anno:2020/pagina_da:/pagina_a:/intervallo_pagine:/volume

Glass exhibits brittle failure behavior. Therefore, redundancy is a fundamental design requirement when using glass as a main structural material. On this basis, a novel structural concept has been developed for hybrid glass-steel posttensioned trian

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15588b38f4c6a635facf074dc2d9168d
https://ascelibrary.org/doi/abs/10.1061/(ASCE)AE.1943-5568.0000374