Results 31 to 40 of about 143,865 (293)

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
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From species to communities : the signature of recreational use on a tropical river ecosystem [PDF]

, 2015
This work was funded by an ERC grant (BIOTIME 250189). A. E. M. thanks the Royal Society and M. D. thanks the Scottish Funding Council (MASTS HR09011) for support.Disturbance can impact natural communities in multiple ways.
Anne E. Magurran (7159652), Ramnarine, Indar W., Shimadzu, Hideyasu, Dornelas, Maria, Amy E. Deacon (7159835), Maria Dornelas (732753), Magurran, Anne, Hideyasu Shimadzu (2567326), Deacon, Amy Elizabeth, Indar W. Ramnarine (7159841)   +9 more
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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
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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
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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
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Response of denitrification rate and denitrifiers to human-disturbance intensity and physicochemical factors of overlying water in a subtropical stream, China

, 2021
Human activities have greatly increased the availability of bioactive nitrogen and, consequently, have altered the nitrogen cycle in riverine systems. Here, we studied denitrification rates and denitrifiers in river sediment and their relationships with ...
Zhao, B, Tan, X, Chen, Q, Zhang, Q, Li, S   +4 more
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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
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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
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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
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Disturbances of Sleep in the Intensive Care Unit

Critical Care Clinics, 1994
Sleep can be extremely difficult to achieve in ICUs. Sleep deprivation is a major problem in the ICU and physicians should be aware of the effects of sleep deprivation on physiologic and immune function. Sleep deprivation has been associated with the ICU syndrome.
openaire   +2 more sources