Results 121 to 130 of about 10,541 (260)

Bit selection method based on the rock drillability characteristics and principal component analysis of rock-breaking indicators. [PDF]

Heliyon
Hu Y, Xinlong X, Penggao Z, Zhen L, Ruihua W, Junqiao L, Shilong X.   +6 more
europepmc   +1 more source

The mechanism of microwave rock breaking and its potential application to rock-breaking technology in drilling

Petroleum Science, 2022
Ming-Zhong Gao, Ben-Gao Yang, Jing Xie, Si-Qi Ye, Jun-Jun Liu, Yi-Ting Liu, Rui-Feng Tang, Hai-Chun Hao, Xuan Wang, Xiang-Yue Wen, Xue-Min Zhou   +10 more
openaire   +1 more source

Evolutionary radiation of large‐bodied gorgonopsians from the lower Abrahamskraal formation of South Africa

The Anatomical Record, EarlyView.
Abstract The middle Permian represents a critical interval in therapsid evolution, when gorgonopsians emerged as some of the first specialized apex predators within terrestrial ecosystems. Despite their significance, the early diversification of Gorgonopsia in Gondwana remains poorly understood due to scarcity and fragmentary material.
Zanildo Macungo, Ricardo Araújo, Bruce S. Rubidge, Michael O. Day, Kathleen N. Dollman, Julien Benoit   +5 more
wiley   +1 more source

Characterizing Rock-Breaking Performance of PDC Cutters via Stability Metrics and Energy consumption in FDEM Simulations. [PDF]

Sci Rep
Wang X, Zhang H, Dong Z, Li J, Qin C, Yang B, Zhou Y.   +6 more
europepmc   +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

Study on the mechanism of multidimensional cutting teeth and the influencing factors of rock breaking efficiency. [PDF]

PLoS One
Chen L, Li D, He J, Meng L, Chi Q, Li G, Chen W, Zhao Y, Yi X, Xia C.   +9 more
europepmc   +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

A dataset describing chip parameters for rock breaking by chisel pick under deep-sea hydrostatic pressure. [PDF]

Sci Data
Liu Z, Lv R, Chen X, Liu K, Wu P, Wei C.
europepmc   +1 more source

Automated Feature Extraction and Classification of Submerged Cultural Heritage Assets in the Puck Lagoon via Multisensor Remote Sensing

Archaeological Prospection, EarlyView.
ABSTRACT This study presents a strong framework for the detection and classification of Submerged Cultural Heritage Assets (SCHA) in shallow marine environments using the integration of multibeam echosounder and airborne LiDAR bathymetry with object‐based image analysis and fuzzy logic–based classification.
Łukasz Janowski, Andrzej Pydyn, Mateusz Popek, Anna M. Kotarba‐Morley, Paweł Tysiąc   +4 more
wiley   +1 more source

Analysis of the influence of shear-tensile resistance and rock-breaking effect of cutting holes. [PDF]

Sci Rep
Wan A, Tao T, Tian X, Xie C, Liu X, Zhao Z, Zhang H.   +6 more
europepmc   +1 more source