Results 51 to 60 of about 205,187 (293)

MicroCT reinvestigation of the only articulated fossil anostomid fish reveals synonymy of Arhinolemur Ameghino, 1898 and Megaleporinus Ramirez et al., 2017

The Anatomical Record, EarlyView.
Abstract Arhinolemur scalabrinii† Ameghino, 1898 was originally described as a strepsirrhine primate (Mammalia) but has been recognized as an anostomid fish since 2012. It remains the only extinct anostomid species known from complete cranial material.
Karen M. Panzeri, Humberto L. Andrelino, Sergio Bogan, José P. O'Gorman, Federico Agnolín, Brian L. Sidlauskas, Nahuel Vega, Agustín G. Martinelli, José L. Birindelli   +8 more
wiley   +1 more source

Study on Fatigue Life Prediction and Acoustic Emission Characteristics of Sandstone Based on Mesoscopic Crack Propagation Mechanism

Energies, 2022
Even when the maximum stress is less than the peak stress under conventional loading, fatigue failure of rock is likely to occur, thereby showing its unique characteristics.
Kai Si, Zhendong Cui, Ruidong Peng, Leilei Zhao   +3 more
doaj   +1 more source

Ghana airborne geophysics project in the Volta and Keta Basin : BGS final report [PDF]

, 2009
This report describes the work undertaken by BGS between November 2006 and March 2009 in collaboration with Fugro Airborne Surveys Pty Ltd on an airborne geophysical survey and ground reconnaissance mapping of the Volta River and Keta Basins, Ghana ...
Carney, J.N., Jordan, C.J., McDonnell, P., Thomas, C.W.   +3 more
core  

The Carboniferous Southern Pennine Basin, UK [PDF]

, 2014
Many of the Carboniferous outcrops located in the Derbyshire region of the Peak District National Park, UK, have provided sites for both significant and pioneering research relating to the clastic sedimentology of marine palaeoenvironments, particularly ...
Mountney, NP, Pringle, JK, Southern, SJ
core   +4 more sources

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 study on the damage characteristics of cyclic disturbance and acoustic emission characteristics of different types of sandstones under high stress in deep mines

Deep Underground Science and Engineering
Three sandstone specimens common in rock engineering were selected to study the differences in the mechanical properties of rocks with different lithologies. The development and expansion of the internal cracks in the specimens were observed by combining
Yujing Jiang, Bin Liang, Dong Wang, Ling Dong, Hengjie Luan, Changsheng Wang, Jiankang Liu   +6 more
doaj   +1 more source

The impact of high temperature on mechanical properties and behaviors of sandstone

Frontiers in Earth Science
The impact of high temperature environments on the physical and mechanical properties of rocks is a significant factor to consider. The investigation into the impact of elevated temperatures on the physical and mechanical characteristics of rocks holds ...
Juan Jin, Juan Jin, Jiandong Liu, Jiandong Liu, Weixi Chen, Guoping Li, Wei Cheng, Wei Cheng, Xiaowen Zhang, Xiaowen Zhang, Yifan Luo   +10 more
doaj   +1 more source

Characterization of sandstones of eastern Slovakia

Selected Scientific Papers: Journal of Civil Engineering, 2019
The main building material in the past was stone. Geological composition influenced the choice and type of building stone, which was used for the construction of the buildings.
Jaroš Pavol, Vertaľ Marián
doaj   +1 more source

Aquifer Drawdown and Recovery in the Northeast Groundwater Management Area, Wisconsin, USA: A Century of Groundwater Use

Geosciences, 2017
The Northeast Groundwater Management Area of Wisconsin, USA contains two major cones of depression in a confined sandstone aquifer. Each cone is centered near cities that have used groundwater for over 100 years.
John A. Luczaj, Julie Maas, David J. Hart, Jonathan Odekirk   +3 more
doaj   +1 more source

Correlation Analysis of Porosity and Uniaxial Compressive Strength of Jurassic Frozen Sandstone

Meikuang Anquan, 2020
To study the relationship between rock porosity and uniaxial compressive strength under freezing conditions, NMR and uniaxial compression tests were performed on Jurassic saturated aquifer sandstone under artificial freezing conditions.
HUANG Zhaomei, CAO Guangyong, CHENG Hua, MA Maoyan, HUANG Yishun
doaj   +1 more source