Results 41 to 50 of about 4,839,756 (347)

Outcomes after Mechanical Aortic Valve Replacement in Children with Congenital Heart Disease

Journal of Chest Surgery, 2023
Background: The optimal choice of valve substitute for aortic valve replacement (AVR) in pediatric patients remains a matter of debate. This study investigated the outcomes following AVR using mechanical prostheses in children.
Joon Young Kim, Won Chul Cho, Dong-Hee Kim, Eun Seok Choi, Bo Sang Kwon, Tae-Jin Yun, Chun Soo Park   +6 more
doaj   +1 more source

The mechanism of dishabituation [PDF]

Frontiers in Integrative Neuroscience, 2014
The dual-process theory of habituation attributes dishabituation, an increase in responding to a habituated stimulus after an interpolated deviant, to sensitization, a change in arousal. Our previous investigations into elicitation and habituation of the electrodermal orienting reflex (OR) showed that dishabituation is independent of sensitization for ...
Steiner, Genevieve Z. (R18023), Barry, Robert J.   +1 more
openaire   +5 more sources

Reactive compatibilization effect of graphene oxide reinforced butyl rubber nanocomposites [PDF]

Polímeros, 2020
The objective of this work is to develop graphene oxide (GO) incorporated butyl rubber (IIR) nanocomposites by three different methods: direct addition approach (DAAM), single step method (SSM) and two step method (TSM).
Sathishranganathan Chinnasamy, Rajasekar Rathanasamy, Harikrishna Kumar Mohan Kumar, Prakash Maran Jeganathan, Sathish Kumar Palaniappan, Samir Kumar Pal   +5 more
doaj   +1 more source

Network topology drives population temporal variability in experimental habitat networks

Population Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu, J. Angus Webb, William D. Bovill, Elise L. King   +3 more
wiley   +1 more source

Analysis Study of the Mechanical power of the unsuccessful and successful Attempts in Snatch Lift [PDF]

مجلة الرافدين للعلوم الرياضية, 2010
The research aims at : 1. Identifying the values of the mechanical power of the unsuccessful and successful attempts in snatch lift for the research sample . 2.
Saad Al-Dulaimi, Mutasim. Al-Mashhadani
doaj   +1 more source

Geographic variation in walking activity in the red flour beetle Tribolium castaneum

Population Ecology, EarlyView.
This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley   +1 more source

Comparison of Properties of Polymer Composite Materials Reinforced with Carbon Nanotubes

Archives of Metallurgy and Materials, 2015
Carbon nanotubes because of their high mechanical, optical or electrical properties, have found use as semiconducting materials constituting the reinforcing phase in composite materials.
Zygoń P., Gwoździk M., Peszke J., Nitkiewicz Z.   +3 more
doaj   +1 more source

Mechanical and Dielectric Properties of Aligned Electrospun Fibers

Fibers, 2021
This review paper examines the current state-of-the-art in fabrication of aligned fibers via electrospinning techniques and the effects of these techniques on the mechanical and dielectric properties of electrospun fibers.
Blesson Isaac, Robert M. Taylor, Kenneth Reifsnider   +2 more
doaj   +1 more source

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

Population Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva, João Hemerson de Sousa, Adriana Josefa da Rocha, Manuella Feitosa Leal, Lucas Ariel de Sousa Aguiar, Tamaris Gimenez Pinheiro, Edson Lourenço da Silva   +6 more
wiley   +1 more source

Temperature and yield stress characterization of electric contacts by 3D numerical simulation [PDF]

Serbian Journal of Electrical Engineering, 2005
Electric contacts of riveted type are analyzed by 3D simulation of their mechanical, electrical and thermal characteristics. Special emphasis was put on dependencies of contacts’ temperatures on chosen contact material and applied load conditions ...
Prijić Aneta, Pešić Biljana, Prijić Zoran, Pantić Dragan, Pavlović Zoran   +4 more
doaj   +1 more source