Results 31 to 40 of about 135,443 (258)

Numerical simulation of roadway deformation and failure under different degrees of dynamic disturbance

Scientific Reports, 2022
Deformation and failure of the roadway surrounding rock under dynamic disturbance were explored, which is essential for the control of the surrounding rock.
Ce Jia, Sheng Li, Chaojun Fan, Hai Rong, Lei Yang, Ziang Pu   +5 more
doaj   +1 more source

Disturbance intensity, disturbance extent and ocean climate modulate kelp forest understory communities [PDF]

Marine Ecology Progress Series, 2020
Disturbances often control community structure by removing large dominant species, allowing new species to colonize. Disturbances vary in intensity and extent, and their effects on resident communities can depend on local environmental conditions. We tested the effects of disturbance intensity and extent on different functional groups of understory ...
Wernberg, Thomas, Couraudon-Réale, Marine, Tuya, Fernando, Thomsen, Mads   +3 more
openaire   +2 more sources

Transient Dynamics Analysis of a Predator-Prey System with Square Root Functional Responses and Random Perturbation

Mathematics, 2022
In this paper, we study the asymptotic and transient dynamics of a predator–prey model with square root functional responses and random perturbation. Firstly, the mean square stability matrix is obtained from the stability theory of stochastic systems ...
Jianguo Tan, Wenjuan Wang, Jianfeng Feng
doaj   +1 more source

Changes in landscape disturbance intensity of sloping land in mountainous areas and their relationship with ecosystem services [PDF]

Nature Conservation
The stability of landscapes on sloping land forms the foundation for ecological protection and sustainable development in mountainous regions. However, with the intensification of human activities, particularly in the complex mountainous areas of ...
Huiqing Han, Xin Yu, Yuanju Jian
doaj   +3 more sources

Harvesting intensity and disturbance to residual trees and ground under Myanmar selection system; comparison of four sites

Global Ecology and Conservation, 2020
The Myanmar selection system (MSS) has a long tradition for timber production in natural forests, mainly using elephants for skidding. We aimed to evaluate the levels of MSS disturbance to standing trees and the ground as compared with those reported for
Tual Cin Khai, Nobuya Mizoue, Tetsuji Ota   +2 more
doaj   +1 more source

Reliably mapping low-intensity forest disturbance using satellite radar data

Frontiers in Forests and Global Change, 2022
In the last decades tropical forests have experienced increased fragmentation due to a global growing demand for agricultural and forest commodities.
Chiara Aquino, Edward T. A. Mitchard, Iain M. McNicol, Harry Carstairs, Andrew Burt, Beisit Luz Puma Vilca, Médard Obiang Ebanéga, Anaick Modinga Dikongo, Creck Dassi, Sylvia Mayta, Mario Tamayo, Pedro Grijalba, Fernando Miranda, Mathias Disney, Mathias Disney   +14 more
doaj   +1 more source

THE INTENSIVE ELECTRIC SHOCK THERAPY OF CHRONIC DISTURBED PSYCHOTIC PATIENTS [PDF]

American Journal of Psychiatry, 1950
1. Intensive electric shock treatment was tried on a large, chronic, disturbed psychotic women's ward over a 3-month period. 2. As a result restraint was reduced roughly 90%, seclusion roughly 66%, and sedation roughly 90%. Patients in general became better "ward citizens."
M, SHOOR, F H, ADAMS
openaire   +2 more sources

Crack propagation mechanisms and stress evolution of floor under dynamic disturbance in deep coal mining

Yantu gongcheng xuebao, 2018
Inrush accidents are easily and frequently caused under high geostress and rising of dynamic disasters which induce crack propagation of rock mass in deep coal mining. So it is important to study the crack propagation mechanisms under dynamic disturbance.
LI Chun-yuan 1,2, ZHANG Yong 2, ZHANG Guo-jun 2, GAO Shou-yang 2, WANG Hong-bo 2
doaj   +1 more source

Consequences of plateau pika disturbance on plant-soil carbon and nitrogen in alpine meadows

Frontiers in Plant Science
The presence of burrowing mammals can have extensive effects on plants and soils, creating bare soil patches in alpine meadows and potentially altering plant-soil carbon (C) and nitrogen (N). This study focuses on the plateau pika (Ochotona curzoniae) to
Xue Ting Xu, Yi Mo Wang, Xiao Zheng Wang, Jie Na Li, Jie Li, Ding Yang, Zheng Gang Guo, Xiao Pan Pang   +7 more
doaj   +1 more source

Large-scale wind disturbances promote tree diversity in a Central Amazon forest. [PDF]

PLoS ONE, 2014
Canopy gaps created by wind-throw events, or blowdowns, create a complex mosaic of forest patches varying in disturbance intensity and recovery in the Central Amazon. Using field and remote sensing data, we investigated the short-term (four-year) effects
Daniel Magnabosco Marra, Jeffrey Q Chambers, Niro Higuchi, Susan E Trumbore, Gabriel H P M Ribeiro, Joaquim Dos Santos, Robinson I Negrón-Juárez, Björn Reu, Christian Wirth   +8 more
doaj   +1 more source