Results 1 to 10 of about 1,580,808 (271)

Role of disturbance, geology and other environmental factors in determining abundance and diversity in coastal avian communities during winter

Marine Ecology - Progress Series, 2013
ABSTRACT: Wading birds are important predators in intertidal communities. Their ecology anddistribution have been widely studied in estuarine wetlands, but little is known about the factorsdetermining their abundance and diversity in the more common non-estuarine coasts.
Paulo Catry, JOSÉ P Granadeiro, Ivan Ramirez   +2 more
exaly   +3 more sources

Numerical Modeling of Stress Disturbance Characteristics during Tunnel Excavation

Advances in Materials Science and Engineering, 2020
The stress state and principal stress axis changes of the stress-field tensor are analyzed during the advancement of a tunnel face on the basis of a given case study of the Jinping II Hydropower Station in China.
Zeqi Zhu, Shiwei Liu, Qian Sheng, Yumin Zhang   +3 more
core   +2 more sources

Mechanical degradation mechanism of rock under seismic disturbance stress

Quarterly Journal of Engineering Geology and Hydrogeology, 2022
During the action of periodic seismic disturbance stress, the rock mass surrounding buried structures will show fatigue damage owing to cyclic loading. To explore the fatigue characteristics and mechanical degradation mechanism of this process, fatigue ...
Chongyang Wang
exaly   +2 more sources

Geology, geotechnical engineering, and natural hazards of Memphis, Tennessee, USA

, 2012
The generally flat landscape of the Memphis, TN, area hides a fascinating geologic history. Cambrian rifting resulted in the concealed faults of the Reelfoot rift, currently the active component of the New Madrid Seismic Zone, lying immediately northwest
Hill, Arleen A., Lester, Justin D., Rapino, Melanie A., Parks, Alan G., Csontos, Ryan M., Stevens, Krista C., Van Arsdale, Roy B., Arellano, David   +7 more
core   +2 more sources

Ecological disturbance in tropical peatlands prior to marine Permian-Triassic mass extinction

Geology, 2020
The Permian-Triassic mass extinction is widely attributed to the global environmental changes caused by the eruption of the Siberian Traps. However, the precise temporal link between marine and terrestrial crises and volcanism is unclear.
Daoliang Chu, S. Grasby, Haijun Song, J. Corso, Yao Wang, T. Mather, Yuyang Wu, Huyue Song, Wenchao Shu, J. Tong, P. Wignall   +10 more
semanticscholar   +1 more source

Surficial Geology, Geomorphology and Terrain Disturbance, Central Ellesmere Island, District of Franklin (Parts of 49D,E,G,H, 340B)

, 1974
D A Hodgson
exaly   +2 more sources

Pulsed volcanic combustion events coincident with the end-Permian terrestrial disturbance and the following global crisis

Geology, 2020
Eruption of the Siberian Traps large igneous province (LIP) is thought to have triggered the Permian-Triassic biological crisis, the largest of the Phanerozoic mass extinctions.
K. Kaiho, M. Aftabuzzaman, David S. Jones, L. Tian   +3 more
semanticscholar   +1 more source

Assessing the importance of a self-generated detachment process in river biofilm models [PDF]

, 2006
1. Epilithic biofilm biomass was measured for 14 months in two sites, located up- and downstream of the city of Toulouse in the Garonne River (south-west France).
Boulêtreau, Stéphanie, Sauvage, Sabine, Garabétian, Frédéric, Sanchez-Pérez, José-Miguel   +3 more
core   +1 more source

Unraveling G‐Quadruplex and i‐Motif Coexistence Within a Double‐Stranded DNA

Angewandte Chemie, EarlyView.
The relative thermodynamic profiles of G‐quadruplex (G4), i‐Motif (iM), and the duplex counterpart tune the simultaneous G4 and iM formation within a double‐stranded (ds) DNA. ABSTRACT DNA can transiently fold into variable arrangements, which are expected to exploit regulatory functions. Guanine‐rich sequences can fold into G‐quadruplexes (G4s), while
Davide Auricchio, Michele Ghezzo, Uroš Zavrtanik, Luca Bertini, Valeria Libera, Riccardo Rigo, Jurij Lah, Claudia Sissi   +7 more
wiley   +2 more sources

Evaluation of disturbance induced on soft offshore sediments by two types of gravity piston coring techniques

Marine Geology, 2019
Sample disturbance is still a key issue in offshore investigations, especially when logistic and financial limitations do not allow the use of drilling equipment. This paper focuses on the comparison between the disturbance induced by a conventional free-
P. Tommasi, A. Avalle, F. Budillon, R. Romeo, A. Caburlotto, A. Conforti, G. Di Martino, A. Pagliaroli, M. Magagnoli, R. Urgeles, J. Llopart, A. Camerlenghi   +11 more
semanticscholar   +1 more source