Results 51 to 60 of about 2,064 (256)

An unusual titanosaur axis from the Upper Cretaceous of Brazil and its significance for sauropod anatomy and systematics

The Anatomical Record, EarlyView.
Abstract The Upper Cretaceous São José do Rio Preto Formation (Bauru Group, southeastern Brazil) has yielded a fragmentary but taxonomically diverse record of titanosaur sauropods, although elements from cervical series remain scarce. Here, we describe a nearly complete sauropod axis from the Vila Ventura Paleontological Area, representing an uncommon ...
Bruno A. Navarro, Jeffrey A. Wilson Mantilla, Jhonata H. A. Martins, Fabiano V. Iori, Leonardo S. Paschoa, Alberto B. Carvalho, Joseli M. Piranha, Hussam Zaher   +7 more
wiley   +1 more source

Design methods for open pit coal mine footwalls

, 1986
Special design methods are required for footwalls due to the inability to detect problem geometries (rolls, cross faults, pinchout) prior to mining. Application of new analytical methods to different failure modes is discussed together with aspects of monitoring, geometry detection and mitigation.
D S Cavers, G H Baldwin, T Hannah, R K Singhal   +3 more
openaire   +1 more source

Testing and selection of ad hoc protocol for proximity vehicle test in open-pit coal mine

Gong-kuang zidonghua, 2018
The paper pointed out that GPS integrated wireless communication technology is most suitable for application of proximity vehicle detection in open-pit coal mine on the basis of analyzing existing proximity vehicle testing technologies, such as ...
WANG Yin, SHI Yanfeng, HU Shengbo
doaj   +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

Early evolution of the gular musculature and its innervation in ray‐finned fishes

The Anatomical Record, EarlyView.
Abstract Gular muscles are an important but often overlooked component of cranial anatomy in bony fishes. They are located on the ventral surface of the head and are derived from the mandibular and hyoid arches. We present a comprehensive review of the gular musculature and its innervation across early diverging actinopterygian lineages. By integrating
Aléssio Datovo, Paulo Presti, George Vita, Murilo N. L. Pastana, Luiz A. W. Peixoto   +4 more
wiley   +1 more source

Stability control mining method of soft rock slope in composite coal seam open-pit mine: a case study of Baiyinhua No.1 open-pit coal mine

Meitan kexue jishu
Rational slope stability-controlled mining method can effectively ensure the safety and stability of open-pit mine slopes, facilitate seamless production capacity transition, and enhance the economic benefits of mining areas. The Baiyinhua No. 1 open-pit
Weiqiang GUO, Hui ZHANG, Hongge TONG, Junxiong TU, Guangwei LIU, Huizhong ZHU, Zuchao LIANG, Jie YUAN, Yu BAI, Mingyu YU, Hao LUO   +10 more
doaj   +1 more source

Description of large, well‐preserved Enchodus specimens from the Bearpaw Formation of Alberta, Canada

The Anatomical Record, EarlyView.
Abstract Fishes of the genus Enchodus were abundant and cosmopolitan in the Late Cretaceous, but are primarily known from isolated remains in Canada. Four well‐preserved fish skulls were recovered in recent years from ammolite mines sampling the Bearpaw Formation of Southern Alberta, and are here referred to Enchodus petrosus Cope, 1874.
Luke E. Nelson, Alison M. Murray, Donald B. Brinkman   +2 more
wiley   +1 more source

Potassium hydroxide activation of microalgal biochar for improved adsorption efficiency

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Activated carbon was prepared from Chlorella by carbonization and potassium hydroxide activation, and its structural properties and methylene blue (MB) adsorption performance were evaluated. Raw Chlorella exhibited an adsorption capacity of 287.2 mg g−1, which decreased to 214.8 mg g−1 after carbonization.
Keito Kubota, Numan Luthfi, Takashi Fukushima, Kenji Takisawa   +3 more
wiley   +1 more source

Engineering Biochar‐Derived Functional Materials for High‐Performance Supercapacitors: Design Principles, Mechanisms, and Scalable Strategies

Carbon Energy, EarlyView.
ABSTRACT Biochar has emerged as a useful and adaptable source of carbon for supercapacitor electrodes. Its value comes from the way biomass chemistry, thermal conversion, and activation conditions shape the resulting pore network, surface groups, and degree of carbon ordering.
Soumen Mandal, Avinash C. Mendhe, Mayna Roy, Neha S. Barse, Taejoon Park, Han‐Seung Lee, Haigun Lee   +6 more
wiley   +1 more source

Prediction of open-pit mine truck travel time based on LSTM-TabTransformer

Scientific Reports
Truck travel time prediction is the basis for real-time optimal scheduling decision of open-pit trucks. Most prediction models for open-pit truck travel time mainly rely on a single machine learning algorithm or model to optimize the hyperparameters ...
Jingchang Zhao, Lei Gao, Shihao Ren
doaj   +1 more source