کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8876652 | 1623760 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A mathematical model for pressure-based organs behaving as biological pressure vessels
ترجمه فارسی عنوان
یک مدل ریاضی برای اندام های مبتنی بر فشار به عنوان سطوح فشار بیولوژیکی رفتار می
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کلمات کلیدی
آلومتریوم، ایزومتری، مخازن تحت فشار، بیومکانیک، فیزیولوژی، دایناسورها،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم کشاورزی و بیولوژیک (عمومی)
چکیده انگلیسی
We introduce a mathematical model that describes the allometry of physical characteristics of hollow organs behaving as pressure vessels based on the physics of ideal pressure vessels. The model was validated by studying parameters such as body and organ mass, systolic and diastolic pressures, internal and external dimensions, pressurization energy and organ energy output measurements of pressure-based organs in a wide range of mammals and birds. Seven rules were derived that govern amongst others, lack of size efficiency on scaling to larger organ sizes, matching organ size in the same species, equal relative efficiency in pressurization energy across species and direct size matching between organ mass and mass of contents. The lung, heart and bladder follow these predicted theoretical relationships with a similar relative efficiency across various mammalian and avian species; an exception is cardiac output in mammals with a mass exceeding 10â¯kg. This may limit massive body size in mammals, breaking Cope's rule that populations evolve to increase in body size over time. Such a limit was not found in large flightless birds exceeding 100â¯kg, leading to speculation about unlimited dinosaur size should dinosaurs carry avian-like cardiac characteristics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Theoretical Biology - Volume 450, 7 August 2018, Pages 37-42
Journal: Journal of Theoretical Biology - Volume 450, 7 August 2018, Pages 37-42
نویسندگان
Aaron R Casha, Liberato Camilleri, Marilyn Gauci, Ruben Gatt, David Sladden, Stanley Chetcuti, Joseph N Grima,