Article
Biology
Yuki Kanayama, Yoh Iwasa
Summary: Research using life history theory explains the large body size of sauropod dinosaurs. The analysis showed that adult body size increased with food-plant quality and availability but decreased with higher mortality due to predators.
JOURNAL OF THEORETICAL BIOLOGY
(2021)
Article
Energy & Fuels
Jiang Lv, Xiaolei Zhang, Shixiang Liu, Hongyu Lu, Yuxuan Ma, Longhua Hu
Summary: This study investigates the flame morphology of horizontal turbulent jets under different sub-atmospheric pressures, showing that the flame horizontal projection length increases with the heat release rate, while the flame vertical height exhibits a non-monotonic behavior. By using non-dimensional formulas and characteristic length scale, the flame characteristics under various sub-atmospheric pressures are described accurately. The developed integral model takes into account air entrainment mechanism, top hat profiles, and strong plume theory, providing a good representation of the flame morphologic characteristics.
Article
Thermodynamics
Fei Tang, Peng Hu, Congling Shi
Summary: The study shows that the dimensionless ceiling flame extension area is higher under sub-atmospheric pressures. Due to lower buoyancy in different sub-atmospheric pressures, there are significant differences between them. By considering the change characterization of air entrainment, it was found that in sub-atmospheric pressures, the air entrainment of wall-attached propane jet fire is weaker. The pressure's influence on flame expansion area is related to the 4/5 power of the ratio of the entrainment coefficient.
Article
Thermodynamics
Aysenur Ates, Behnam Parizad Benam, Mandana Mohammadilooey, Sueleyman Celik, Vladimir Serdyukov, Anton Surtaev, Abdolali Khalili Sadaghiani, Ali Kosar
Summary: This study investigates the boiling heat transfer performance of surfaces with uniform (superhydrophobic and superhydrophilic) and mixed (superbiphilic) wettability through pool boiling experiments. The experimental results show that the superbiphilic surface can improve boiling heat transfer by 98% and 54% at atmospheric and sub-atmospheric pressures, respectively.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Thermodynamics
Xiang Wang, Kun Liang, Jing Xu, Jigang Wang, Xinwen Chen
Summary: This paper investigates the bubble dynamics behavior and heat transfer characteristics of pool boiling at sub-atmospheric pressure. The experimental results show that as the boiling pressure decreases, the diameter of bubble departure increases and becomes more circular, while the frequency and aspect ratio decrease. Additionally, the critical heat flux (CHF) decreases with the decline in pressure. At sub-atmospheric pressure, the boiling heat transfer coefficient (HTC) increases with liquid height, while it remains nearly unchanged at standard atmospheric pressure and above.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Article
Environmental Sciences
Aris D. Hurtado-Misal, Daniela Hernandez-Sanjuan, Oscar E. Coronado-Hernandez, Hector Espinoza-Roman, Vicente S. Fuertes-Miquel
Summary: The study focuses on sub-atmospheric pressure patterns in emptying pipeline systems, analyzing variables such as air pocket pressure, water velocity, and water column length. Using a 2D CFD model simulation, the mathematical model predicts experimental values and assesses the sensitivity of the drain valve to changes in water column length.
Article
Biology
Qiaohui Hu, Thomas J. Nelson, Edward P. Snelling, Roger S. Seymour
JOURNAL OF EXPERIMENTAL BIOLOGY
(2018)
Editorial Material
Anthropology
Roger S. Seymour, Edward P. Snelling
JOURNAL OF HUMAN EVOLUTION
(2019)
Article
Physiology
Adian Izwan, Edward P. Snelling, Roger S. Seymour, Leith C. R. Meyer, Andrea Fuller, Anna Haw, Duncan Mitchell, Anthony P. Farrell, Mary-Ann Costello, Shane K. Maloney
JOURNAL OF COMPARATIVE PHYSIOLOGY B-BIOCHEMICAL SYSTEMS AND ENVIRONMENTAL PHYSIOLOGY
(2018)
Article
Biology
Roger S. Seymour, Qiaohui Hu, Edward P. Snelling, Craig R. White
JOURNAL OF EXPERIMENTAL BIOLOGY
(2019)
Article
Anatomy & Morphology
Edward P. Snelling, Roger S. Seymour, Dino A. Giussani, Andrea Fuller, Shane K. Maloney, Anthony P. Farrell, Duncan Mitchell, Keith P. George, Edward M. Dzialowski, Sonnet S. Jonker, Tilaye Wube
JOURNAL OF ANATOMY
(2019)
Article
Multidisciplinary Sciences
Alessandro Palci, Roger S. Seymour, Cao Van Nguyen, Mark N. Hutchinson, Michael S. Y. Lee, Kate L. Sanders
ROYAL SOCIETY OPEN SCIENCE
(2019)
Article
Anatomy & Morphology
Roger S. Seymour, Qiaohui Hu, Edward P. Snelling
JOURNAL OF ANATOMY
(2020)
Article
Anatomy & Morphology
Qiaohui Hu, Thomas J. Nelson, Roger S. Seymour
JOURNAL OF ANATOMY
(2020)
Article
Biology
Roger S. Seymour, Vanya Bosiocic, Edward P. Snelling, Prince C. Chikezie, Qiaohui Hu, Thomas J. Nelson, Bernhard Zipfel, Case V. Miller
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2019)
Article
Physiology
Sarah Rola-Wojciechowski Barrett, Roger S. Seymour
Summary: Respiratory gas exchange in avian embryos progresses through three stages inside the egg, with oxygen mainly obtained through diffusion during early stages and later transition to chorioallantoic and pulmonary gas exchange. The study reveals that fluids surrounding the embryo greatly impede oxygen diffusion, leading to severe hypoxia near the embryo and rising lactate levels.
JOURNAL OF COMPARATIVE PHYSIOLOGY B-BIOCHEMICAL SYSTEMS AND ENVIRONMENTAL PHYSIOLOGY
(2021)
Article
Anatomy & Morphology
Qiaohui Hu, Thomas J. Nelson, Roger S. Seymour
Summary: The study utilized vascular contrast and micro-computerized tomographic scanning to investigate femoral nutrient foramen and artery sizes in three groups of sub-adult chickens. The results showed a significant correlation between artery lumen size and foramen size, suggesting a method for estimating blood flow rates through nutrient arteries. Laying hens tend to have higher nutrient artery perfusion rates, potentially due to extra oxygen and calcium requirements for eggshell production.
JOURNAL OF ANATOMY
(2022)
Article
Biology
Qiaohui Hu, Thomas J. Nelson, Roger S. Seymour
Summary: The metabolic rate of vertebrate bone tissue is related to bone growth, repair, and homeostasis, all of which depend on the life stage. The blood flow rate is difficult to measure directly, but absolute blood flow rate should reflect local tissue oxygen requirements. Laying hens had a higher wet bone mass-specific blood flow rate to femora than non-laying hens and roosters, possibly due to higher bone calcium mobilization during eggshell production.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2021)
Article
Biology
Gordon Grigg, Julia Nowack, Jose Eduardo Pereira Wilken Bicudo, Naresh Chandra Bal, Holly N. Woodward, Roger S. Seymour
Summary: The whole-body endothermy in modern birds and mammals may have a similar origin, challenging the previous assumption of independent evolution. The similarity in early muscle thermogenesis processes in birds and mammals supports the hypothesis of homology in whole-body endothermy.
BIOLOGICAL REVIEWS
(2022)
Article
Biology
Heidi D. Horrell, Anika Lindeque, Anthony P. Farrell, Roger S. Seymour, Craig R. White, Kayla M. Kruger, Edward P. Snelling
Summary: This meta-study found that cardiac capillary numerical density and mitochondrial volume density decrease with increasing body mass. The scaling trajectories suggest quantitative matching between the supply and consumption of oxygen in the heart, supporting the economic design at the cellular level. However, the exponent for the maximum external mechanical power of the cardiac tissue decreases at a slower rate, implying a declining external mechanical efficiency of the heart with increasing body mass.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Biodiversity Conservation
Qiaohui Hu, Case Vincent Miller, Edward P. Snelling, Roger S. Seymour
Summary: The study investigates the relationship between blood flow rate to the femur and body mass among cursorial birds, using fossil foramina data and comparing them with extant species. The results support the existence of terrestrial locomotor activity in cursorial birds and reveal similar scaling relationships. Femoral bone blood flow rates in extinct species are similar to those of extant cursorial birds after accounting for body mass and locomotor behaviors.
