Results 41 to 50 of about 30,243 (255)

New craniodental materials of Falcarius utahensis (Theropoda: Therizinosauria) reveal patterns of intraspecific variation and cranial evolution in early coelurosaurians

The Anatomical Record, EarlyView.
Abstract Despite documented ecomorphological shifts toward an herbivorous diet in several coelurosaurian lineages, the evolutionary tempo and mode of these changes remain poorly understood, hampered by sparse cranial materials for early representatives of major clades. This is particularly true for Therizinosauria, with representative crania best known
William J. Freimuth, Lindsay E. Zanno
wiley   +1 more source

Preferential Paths of Air-water Two-phase Flow in Porous Structures with Special Consideration of Channel Thickness Effects. [PDF]

, 2019
Accurate understanding and predicting the flow paths of immiscible two-phase flow in rocky porous structures are of critical importance for the evaluation of oil or gas recovery and prediction of rock slides caused by gas-liquid flow.
A Ferrari, A Ferrari, A Khoei, A Scanziani, A Sokolichin, A Zidane, AA Keller, AG Yiotis, AQ Raeini, B Ling, C Chang, C Pan, C Xie, CY Zhang, D Kandhai, D Wildenschild, ES Boek, F Auzerais, F Basirat, HAA Amiri, HF Nordhaug, HS Suh, J Prüss, L Chen, M Auset, M Starnoni, M Sussman, MS Andreini, NK Karadimitriou, P Yue, PP Minh, PY Chuang, R Al-Raoush, R Helmig, R Hu, R Lenormand, S Berg, S Crone, S Ogawa, S Sirivithayapakorn, S Whitaker, SMV Gilfillan, T Tsuji, V Er, WB Lindquist, Y Chen, YS Wu, Z Liu, Z Sadjadi   +48 more
core   +2 more sources

Re‐evaluation of a soft crested Edmontosaurin, with implications for hadrosaurid life appearance and diversity

The Anatomical Record, EarlyView.
Abstract Hadrosaurid dinosaurs are generally regarded as “crested” or “non‐crested” depending on the presence or absence of a bony cranial crest. At least one supposedly “non‐crested” hadrosaur is known to have possessed a soft tissue cranial crest (or comb), based on an exceptionally preserved “mummified” specimen. Here we redescribe this specimen and
Henry S. Sharpe, Phil R. Bell, Ian Baylatry, Robin Sissons, Corwin Sullivan   +4 more
wiley   +1 more source

True triaxial mechanical characteristics of tight sandstone with different oil and water staturation

地质科技通报, 2023
The occurrence of fluids such as water, oil or natural gas in tight sandstone reservoirs may affect the mechanical characteristics of tight sandstone. This paper selects tight sandstones of Yanchang Formation in Panlong area of Ordos Basin, and uses YSZS-
Pengxiang Xu, Xiangdong Chen, Zhao Liu, Xin Cheng, Yiqian Qu, Qiushi Li, Chunxiao Ma, Hanning Wu   +7 more
doaj   +1 more source

Estratigrafía de Sr y evolución sedimentaria de los depósitos marinos del Mioceno temprano en el antepaís del norte de la Cuenca Austral (o Magallanes), Argentina [PDF]

, 2015
Early Miocene shallow marine deposits in the region of Lago Posadas-Meseta Belgrano (Argentina) represent part of the “Patagoniense” transgression, an Atlantic marine incursion that flooded large part of Patagonia, including the Austral (foreland) Basin (
Alonso Muruaga, Pablo Joaquin, Cuitiño, José Ignacio, Scasso, Roberto Adrian, Ventura Santos, Roberto   +3 more
core   +1 more source

Cranial anatomy of a Late Cretaceous aspidorhynchid fish (Neopterygii: Aspidorhynchiformes) from Alberta, Canada

The Anatomical Record, EarlyView.
Abstract Belonostomus longirostrisis was named for an isolated jaw fragment from freshwater Upper Cretaceous (Campanian) sediments of the Dinosaur Park Formation of Alberta, Canada. Following the description of the Albertan species, numerous isolated cranial and postcranial elements have been collected from the Dinosaur Park Formation and assigned to B.
Mondo Miyazato, Luke E. Nelson, Joshua A. Doyon, Donald B. Brinkman, Alison M. Murray   +4 more
wiley   +1 more source

Distribution patterns of tight sandstone gas and shale gas

Petroleum Exploration and Development
Based on an elaboration of the resource potential and annual production of tight sandstone gas and shale gas in the United States and China, this paper reviews the researches on the distribution of tight sandstone gas and shale gas reservoirs, and ...
Jinxing DAI, Dazhong DONG, Yunyan NI, Deyu GONG, Shipeng HUANG, Feng HONG, Yanling ZHANG, Quanyou LIU, Xiaoqi WU, Ziqi FENG   +9 more
doaj   +1 more source

Quantitative Evaluation of Tight Sandstone Reservoir Based on Diagenetic Facies—A Case of Lower Silurian Kepingtage Formation in Shuntuoguole Low Uplift, Tarim Basin, China

Frontiers in Earth Science, 2021
The tight sandstone reservoirs of the Lower Silurian Kepingtage Formation are important exploratory targets for tight gas resources in the Shuntuoguole Low Uplift of Tarim Basin. How to evaluate tight sandstone reservoir is an urgent problem to be solved.
Bin Li, Bin Li, Hanbing Zhang, Qingsong Xia, Qingsong Xia, Jun Peng, Jun Peng, Qiang Guo   +7 more
doaj   +1 more source

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

Growth Mechanism of Siliceous Cement in Tight Sandstone and Its Influence on Reservoir Physical Properties

Energies, 2018
To investigate the effect of siliceous cementation on the densification of sandstone and the forming process of tight sandstone, based on cathodoluminescence, scanning electron microscopy and thin section analysis, the growth mechanism and ...
Bo Jiu, Wenhui Huang, Jing Shi, Mingqian He   +3 more
doaj   +1 more source