Results 11 to 20 of about 476,218 (260)

Deformation strengthening mechanisms of rails in extremely long-term operation

open access: yesJournal of Materials Research and Technology, 2021
The quantitative estimation of strengthening mechanisms of rails’ surface layer is carried out on the basis of regularities and formation mechanisms of structure-phase states revealed by the methods of modern physical materials science.
Yurii Ivanov   +5 more
doaj   +1 more source

An Autonomous Surface Vehicle for Long Term Operations [PDF]

open access: yesOCEANS 2018 MTS/IEEE Charleston, 2018
In proceedings of MTS/IEEE OCEANS, 2018 ...
Jason Moulton   +7 more
openaire   +2 more sources

The avifauna of the forest mosaic habitats of the Mariarano region, Mahajanga II district, north-west Madagascar

open access: yesBothalia: African Biodiversity & Conservation, 2019
Background: The West Malagasy dry forests support numerous endemic species and experience heavy anthropogenic pressures, yet remain very poorly studied.
Rachel H. Palfrey   +7 more
doaj   +1 more source

Estimation of Fatigue Crack Growth Rate in Heat-Resistant Steel by Processing of Digital Images of Fracture Surfaces

open access: yesMetals, 2021
The micro- and macroscopic fatigue crack growth (FCG) rates of a wide class of structural materials were analyzed and it was concluded that both rates coincide either during high-temperature tests or at high stress intensity factor (SIF) values.
Pavlo Maruschak   +8 more
doaj   +1 more source

Power Grid Simulation Model for Long Term Operation Planning

open access: yesChemical Engineering Transactions, 2013
In this paper a comprehensive model of electrical power grid with outage planning and forced outage simulation for prospective studies of transmission system operators is presented.
J. Zabojnik, M. Dvorak
doaj   +1 more source

Energy Analysis of a Net-Zero Energy Building Based on Long-Term Measured Data: A Case Study in South Korea

open access: yesBuildings, 2023
In this study, the energy consumption and generation characteristics, the operation status of a photovoltaic (PV) system, and the energy balance of a net-zero energy building (nZEB) in South Korea were analyzed based on the data collected over a 10-year ...
Jungki Hong   +4 more
doaj   +1 more source

Dexmedetomidine decreases postoperative delirium in the elderly undergoing long-term hepatopancreatobiliary surgery: a randomized controlled trail

open access: yesDi-san junyi daxue xuebao, 2021
Objective To determine the effect of dexmedetomidine (Dex) on the postoperative delirium (POD) in elderly patients undergoing long-term hepatopancreatobiliary surgery with general anesthesia. Methods A total of 50 elderly patients who underwent scheduled
CHEN Xingtong   +7 more
doaj   +1 more source

LONG TERM FOLLOW-UP OF KASAI OPERATION FOR BILIARY ATRESIA: A SINGLE CENTER EXPERIENCE [PDF]

open access: yesActa Medica Iranica, 2006
Children who are operated for biliary atresia by the Kasai procedure have approximately 30% chance of survival for 5 years. In an attempt to define the role of this operation for biliary atresia, the surgery records of the past 15 years were reviewed ...
J. Kouranloo   +2 more
doaj   +2 more sources

A qualitative approach of the regulation for the life extension of brazilian nuclear power plants

open access: yesBrazilian Journal of Radiation Sciences, 2022
The advantages of Long-Term Operation (LTO) in dealing with the end-of-life-cycle issue of Nuclear Power Plants (NPPs) in operation today, when compared to the creation of new NPPs, have major social and economic implications.
Carla Gomes Tinoco Andrade   +2 more
doaj   +1 more source

Prediction of prestressing losses for long term operation of nuclear reactor buildings

open access: yesEPJ Web of Conferences, 2011
Prestressed concrete is used in nuclear reactor buildings to guarantee containment and structural integrity in case of an accident. Monitoring and operating experience over 40 years has shown that prestressing losses can be much greater than the design ...
Thillard G., Cornish-Bowden I., Capra B.
doaj   +1 more source

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