Results 61 to 70 of about 1,173,059 (291)

Morphological disparity in theropod jaws: comparing discrete characters and geometric morphometrics

Palaeontology, 2020
Disparity, the diversity of form and function of organisms, can be assessed from cladistic or phenetic characters, and from discrete characters or continuous characters such as landmarks, outlines, or ratios.
Joep Schaeffer, M. Benton, E. Rayfield, Thomas L. Stubbs   +3 more
semanticscholar   +1 more source

Reworking Geometric Morphometrics into a Methodology of Transformation Grids

Evolutionary Biology, 2023
AbstractToday’s typical application of geometric morphometrics to a quantitative comparison of organismal anatomies begins by standardizing samples of homologously labelled point configurations for location, orientation, and scale, and then renders the ensuing comparisons graphically by thin-plate spline as applied to group averages, principal ...
openaire   +3 more sources

Genome‐Wide In Vivo RNAi Screening Identifies HOXD4 as a Tumor Metastasis Suppressor in Colorectal Cancer

Advanced Science, EarlyView.
Metastasis remains a major challenge in colorectal cancer. Using an in vivo shRNA screening system, this study identifies Homeobox D4 as a key metastasis suppressor. Reduced Homeobox D4 expression is associated with aggressive tumor features. Functional and mechanistic analyses show that it inhibits epithelial‐mesenchymal transition by repressing ...
Zhi‐hua Ye, Wen‐jing Luo, Lu Li, Wen‐di Shuai, Ling Zhou, You‐fa Duan, Xue Chen, Jun‐kai Zhang, Wenlin Huang, Ran‐yi Liu   +9 more
wiley   +1 more source

Determination of Sexual Dimorphism and Morphological Variation of Pool Barb, Puntius sophore (Cypriniformes, Cyprinidae), Using Landmark Based Geometric Morphometric Analysis

Zoodiversity
Geometric morphometrics is an efficient way to quantify biological shape variation and its covariation with other biotic or abiotic factors. The geometric information of an object is measured in a non-linear shape space after removing size, orientation ...
S. Roy, S. Ray, S. Saikia
doaj   +1 more source

Apples before the fall: Does shape stability coincide with maturity?

Quantitative Plant Biology, 2021
Fruit shape is the result of the interaction between genetic, epigenetic, environmental factors and stochastic processes. As a core biological descriptor both for taxonomy and horticulture, the point at which shape stability is reached becomes paramount ...
Maria D. Christodoulou, Alastair Culham
doaj   +1 more source

Combining machine learning algorithms and geometric morphometrics: A study of carnivore tooth marks

Palaeogeography, Palaeoclimatology, Palaeoecology, 2019
Since the 1980s an intense scientific debate has revolved around the hunting capacities of early hominin populations and the behavioral patterns of carnivores sharing the same ecosystem, and thus competing for the same resources.
L. Courtenay, J. Yravedra, R. Huguet, Julia Aramendi, M. Maté‐González, D. González-Aguilera, M. Arriaza   +6 more
semanticscholar   +1 more source

Oxygen Vacancy‐Enriched Platinum Single‐Atom Nanozyme Wrapped in Nanoislands: Unlocking Catalytic Activity and Reprogramming Redox Microenvironment for Osteonecrosis Repair

Advanced Science, EarlyView.
CeO2‐x/Pt single‐atom nano‐island is constructed via low‐temperature reduction, featuring abundant oxygen vacancies and an island–sea structure. It delivers outstanding multi‐enzyme‐mimetic activity and ROS‐scavenging efficiency. Density functional theory reveals optimized electronic structures and reaction pathways.
Yang Zhu, Zehui Lv, Xuejie Cai, Penghui Wei, Dengliang Wang, Zhao Wang, Ruoying Wang, Yingjie Wang, Xingdong Yang, Yixin Bian, Jiawei Xu, Xisheng Weng, Liangfeng Wei   +12 more
wiley   +1 more source

Taxonomic Status of Water vole, Arvicola amphibius Linneaus, 1758 in Western Anatolia

Hittite Journal of Science and Engineering, 2019
A total of 116 specimens of the genus Arvicola were collected from western part of Turkey Western part of Anatolia and Turkish Thrace and examined based on geometric morphometrics and traditional morphometrics.
Bulent Gozcelioglu, Zeycan Helvaci, Ercument Colak   +2 more
doaj   +1 more source

Wavelength‐Dependent Photobiomodulation Regulates Macrophage Polarization via Mitochondrial Dynamics and Metabolic Reprogramming

Advanced Science, EarlyView.
Light wavelength encodes distinct macrophage fates through mitochondrial and metabolic remodeling. Red 625 nm irradiation induces glycolysis, mitochondrial fission, and M1 polarization, whereas near‐infrared 850 nm irradiation promotes fatty acid oxidation, mitochondrial fusion, and M2 polarization.
Qiusheng Shi, Hao Jia, Jianfei Dong, Linhao Li, Jingqi Cao, Xun Chen, Zhenzhen Jia, Jing Na, Zhijie Yang, Xinyuan Chen, Yubo Fan, Shuhua Yue, Lisha Zheng   +12 more
wiley   +1 more source

Geometric morphometrics to distinguish the cryptic species Anopheles minimus and An. harrisoni in malaria hot spot villages, western Thailand

Medical and Veterinary Entomology, 2020
Anopheles minimus Theobald 1901 and An. harrisoni Harbach & Manguin 2007 belong to the same species complex. They are morphologically similar and can exist in sympatry but have blood host preferences.
K. Chatpiyaphat, S. Sumruayphol, J. Dujardin, Y. Samung, A. Phayakkaphon, L. Cui, J. Ruangsittichai, S. Sungvornyothin, J. Sattabongkot, P. Sriwichai   +9 more
semanticscholar   +1 more source