Evidence map›Paper›PMID 41003989›Full record

ArticleTheory in biosciences = Theorie in den Biowissenschaften2025

Smart and smarter: improving on a classic egg shape model.

Valeriy G Narushin, Natalia A Volkova, Alan Yu Dzhagaev, Darren K Griffin, Michael N Romanov, Natalia A Zinovieva

Abstract read
In one paragraph

Article in Theory in biosciences = Theorie in den Biowissenschaften, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Article
  2. 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

6 authors.

Valeriy G NarushinIndependent researcher, Zaporizhya, Ukraine.ORCID https://orcid.org/0000-0001-6799-6605
Natalia A VolkovaL. K. Ernst Federal Research Center for Animal Husbandry, Dubrovitsy, Podolsk, Moscow Oblast, Russia. natavolkova@inbox.ru.ORCID https://orcid.org/0000-0001-7191-3550
Alan Yu DzhagaevL. K. Ernst Federal Research Center for Animal Husbandry, Dubrovitsy, Podolsk, Moscow Oblast, Russia.ORCID https://orcid.org/0000-0001-7818-0142
Darren K GriffinSchool of Natural Sciences, University of Kent, Canterbury, Kent, UK. D.K.Griffin@kent.ac.uk.ORCID https://orcid.org/0000-0001-7595-3226
Michael N RomanovL. K. Ernst Federal Research Center for Animal Husbandry, Dubrovitsy, Podolsk, Moscow Oblast, Russia. m.romanov@kent.ac.uk.ORCID https://orcid.org/0000-0003-3584-4644
Natalia A ZinovievaL. K. Ernst Federal Research Center for Animal Husbandry, Dubrovitsy, Podolsk, Moscow Oblast, Russia.ORCID https://orcid.org/0000-0003-4017-6863

Funding

Russian Science Foundation 24-16-00294
6 · The paper itself

Abstract

Smart's model (SM) describing the geometry of avian eggs is, uniquely, based on physiological characteristics of eggs formation in oviduct walls transforming a sphere to an ellipsoid, to an ovoid. The purpose of this study was to revisit and perform a more in-depth examination of SM, providing a possible improvement in terms of reducing the number of initial parameters and compliance with geometric principles fundamental for bodies of revolution. SM requires measuring five egg parameters: length (L), maximum breadth (B), displacement of the central axis to the level of maximum breadth (w), and two radii of the egg at a point shifted by ¼L from the pointed (r) and blunt (R) ends, respectively. A practical test for the reproduction degree of three egg shape varieties using five-parameter model confirmed its maximum accuracy compared to all others. Modifications using four parameters (L, B, w and r or B

Indexed as

Models, BiologicalOvumAnimalsBirdsFemaleOviductsAvian eggsEgg geometryMain axiom of the mathematical formula of the bird’s eggSmart modelStandard egg shape

Identifiers

PMID41003989
PMCPMC12572082

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.