Results 71 to 80 of about 4,261 (263)

A detailed redescription of a skeletally immature ‘Redondasaurus’ suggests ontogenetic transformations in the taxon mirror phytosaurian morphological evolution

The Anatomical Record, EarlyView.
Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
wiley   +1 more source

Paleopathology of a putative colossosaurian caudal vertebra (Neosauropoda: Titanosauria) from the Presidente Prudente Formation, Brazil

The Anatomical Record, EarlyView.
Abstract Studies investigating paleopathologies in sauropods remain scarce despite their relative abundance in the fossil record. In this study we report new occurrence of paleopathological features, corresponding to a neoplasm found in a middle caudal vertebra (MCT.R.2120) of an advanced titanosaur from the Presidente Prudente Formation (Bauru Basin ...
Maria Luiza Peres Bertolossi, Kamila L. N. Bandeira, Roberta Veronese do Amaral, Arthur S. Brum, Rafael C. da Silva, Valéria Gallo   +5 more
wiley   +1 more source

Experimental research on mechanical performance of grouting plugging material with large amount of fly ash

Scientific Reports
In order to achieve the purpose of long-term stable mining of roadway, the strength and stability of rock mass are improved by means of grouting of fractured rock mass.
Wang Pengshuai, Cao Zhengzheng, Li Zhenhua, Du Feng, Wang Wenqiang, Zhai Minglei, Hong Zijie   +6 more
doaj   +1 more source

Born this way: Does variation in perinatal limb bone morphology predict adult locomotor repertoire in primates?

The Anatomical Record, EarlyView.
Abstract Primates show a high degree of locomotor diversity that engenders similar variance in limb bone cross‐sectional geometry and bending strength: leaping primates have stronger hindlimb bones whereas suspensory species have stronger forelimb bones.
Angela M. Mossor, Jeremy Busken, Lorna Benden, Ethan Mardovin, Andrew Bostick, Grégoire Boulinguez‐Ambroise, Timothy D. Smith, Jesse W. Young   +7 more
wiley   +1 more source

Blastability Classification of Fractured Rock Mass Based on Weighted Clustering Analysis

Chemical Engineering Transactions, 2017
This paper classifies the blastability of fractured rock mass based on the solid coefficient, rock impedance, unit explosive consumption and mean fracture spacing. Specifically, an evaluation model was established according to the principle of clustering
Tiejun Tao, Ping Huang, Jianmin Zhou, Hongbing Yu, Jie Li   +4 more
doaj   +1 more source

Drivers of tail evolution in squamates and their implications for the fossorial origin of snakes

The Anatomical Record, EarlyView.
Abstract The axial skeleton serves as the primary structural support in all vertebrates and is subdivided into five distinct regions: cervical, thoracic, lumbar, sacral, and caudal. Relaxation of constraints acting on the terminal end of the axial skeleton has led to remarkable variation in caudal vertebrae number across Squamata.
Olivia Binfield, Marco Camaiti, Lucy Roberts   +2 more
wiley   +1 more source

Simulation analysis of the evolution law of creep rupture crack extension in X-fractured rock body

Scientific Reports
Creep is the macroscopic manifestation of the process of generation, expansion, and penetration of microscopic cracks in a rock body. In this study, the GDEM continuous–discontinuous numerical simulation software was used to model a rock body containing ...
Na Zhao, Shuai Wei, Laigui Wang, Jingyi Sun   +3 more
doaj   +1 more source

Scaling and ecomorphology of lagomorph body shape and appendicular skeleton

The Anatomical Record, EarlyView.
Abstract Body shape is one of the most prominent features of phenotypic variation. Yet, mammalian body shapes are poorly quantified and the underlying components contributing to its diversity and its relationship to other skeletal components are rarely tested.
Nia Brice, Coby Huizenga, Chris J. Law
wiley   +1 more source

Seepage-heat accumulation characteristics and hydrothermal transport calculation model in mining-induced fractured rock mass: Implications for geothermal water control

Case Studies in Thermal Engineering
The aim of this paper is to explore hydrothermal transport in surrounding rocks during deep mining, focusing on the mechanisms and key factors influencing groundwater seepage and heat accumulation disasters.
Hongbin Zhao, Shihao Tu, Hongsheng Tu, Kaijun Miao, Long Tang, Jieyang Ma   +5 more
doaj   +1 more source

Numerical simulation on crack propagation of rock mass with a single crack under seepage water pressure

Advances in Mechanical Engineering, 2017
The fracture characteristics of fractured rock mass have important significance in environmental geotechnical engineering. Taking a single crack rock mass with dip angle of 45° as the research object, we studied the fracture characteristics of fractured ...
Shiliang Liu, Wenping Li, Qiqing Wang, Zhiyong Wu, Zhi Yang   +4 more
doaj   +1 more source