Egg Incubation Mechanics of Giant Birds.

An Yen, Hsiao-Jou Wu, Pin-Yi Chen, Hon-Tsen Yu, Jia-Yang Juang

Abstract read

In one paragraph

Article in Biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it

0cells of the map it votes in

4citing papers in PubMed

–field-weighted citation impact

1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

Australia's First Peoples: hunters of extinct megafauna or Australia's first fossil collectors.Royal Society open science · 2025
Article
A Comparative Study on the Microstructures, Mineral Content, and Mechanical Properties of Non-Avian Reptilian Eggshells.Biology · 2023
Article
Microstructural and crystallographic evolution of palaeognath (Aves) eggshells.eLife · 2023
Article
Elastic Moduli of Avian Eggshell.Biology · 2021
Article

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

An YenDepartment of Mechanical Engineering, National Taiwan University, Taipei 10617, Taiwan.

Hsiao-Jou WuDepartment of Mechanical Engineering, National Taiwan University, Taipei 10617, Taiwan.

Pin-Yi ChenDepartment of Mechanical Engineering, National Taiwan University, Taipei 10617, Taiwan.

Hon-Tsen YuDepartment of Life Science, National Taiwan University, Taipei 10617, Taiwan.

Jia-Yang JuangDepartment of Mechanical Engineering, National Taiwan University, Taipei 10617, Taiwan.ORCID 0000-0001-6801-3244

Funding

Ministry of Science and Technology, Taiwan 109-2223-E-002-003-MY3National Taiwan University N.A.

6 · The paper itself

Abstract

Finite element analysis (FEA) was used to conduct mechanical analyses on eggshells of giant birds, and relate this to the evolution and reproductive behavior of avian species. We aim to (1) investigate mechanical characteristics of eggshell structures of various ratite species, enabling comparisons between species with or without reversed sexual size dimorphism (RSSD); (2) quantify the safety margin provided by RSSD; (3) determine whether the Williams' egg can have been incubated by an extinct giant bird

Indexed as

contact incubationfinite element analysis (FEA)giant birdsmechanicsmoaratitesreversed sexual size dimorphism

Identifiers

PMID34439970

DOI10.3390/biology10080738

PMCPMC8389601

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.