Results 71 to 80 of about 1,151,537 (210)

Failure to meet aerobic fitness standards among urban elementary students [PDF]

open access: yes, 2018
The aim of this study was to explore the relationship of aerobic fitness with the elementary school environment and student characteristics among 4th and 5th grade children attending urban public schools in St. Louis, MO, USA.
Ackermann, Nicole   +7 more
core   +2 more sources

Аналіз надійності ремонтопридатного електрообладнання систем електропостачання бурових установок [PDF]

open access: yes, 2007
Сформулированы задачи анализа надежности электрооборудования системы электроснабжения с учетом особенностей схем питания буровых установок. Приведен анализ ремонтопригодного електробурового оборудования.
Гладь, І. В.   +2 more
core  

Space Shuttle Lightning Protection [PDF]

open access: yes, 1979
The technology for lightning protection of even the most advanced spacecraft is available and can be applied through cost-effective hardware designs and design-verification techniques.
Blount, R. L.   +2 more
core   +1 more source

Investigation of various maintenance parameters for auxiliaries in a coal‐handling plant aided by a Visual Basic 6.0–based scheduled program

open access: yesEngineering Reports, 2019
Schedule maintenance programs rely on the analysis of collected data during running and shut down time. In a preventive maintenance program, it is difficult to a priori determine the time limit or set an alarm indicating the failure time of a specific ...
Satyajit Pattanayak   +2 more
doaj   +1 more source

Micromechanics of composite laminate compression failure [PDF]

open access: yes
The Dugdale analysis for metals loaded in tension was adapted to model the failure of notched composite laminates loaded in compression. Compression testing details, MTS alignment verification, and equipment needs were resolved.
Bradley, Walter L., Guynn, E. Gail
core   +1 more source

Risk assessment for the installation and maintenance activities of a low-speed tidal energy converter [PDF]

open access: yes, 2012
The study presented in this paper, is part of the Deep Green project, which includes the development of a power converter/device for employment in low-speed tidal currents. It mainly focuses on the initial steps to investigate the ways on how to minimize
Lazakis, Iraklis   +2 more
core  

Reliability Modeling and Simulation of Electric Substations – A Case Study

open access: yesApplications of Modelling and Simulation, 2021
The main objective of power transmission and distribution companies is to provide reliable power with minimal Customer Interruptions (CI) and Customer Interruption Minutes (CMI).
S. R. Palakodeti, H. Guo, P. K. Raju
doaj  

Design and fabrication of prototype system for early warning of impending bearing failure [PDF]

open access: yes
A test program was conducted with the objective of developing a method and equipment for on-line monitoring of installed ball bearings to detect deterioration or impending failure of the bearings.
Chen, H. M., Meacher, J.
core   +1 more source

Development and implementation of preventive-maintenance practices in Nigerian industries.

open access: yes, 2006
A methodology for the development of PM using the modern approaches of FMEA, root-cause analysis, and fault-tree analysis is presented. Applying PM leads to a cost reduction in maintenance and less overall energy expenditure.
Eti, Mark C.   +2 more
core   +1 more source

Problems involving combined loading [PDF]

open access: yes
The first problem was to determine the capability of a ground support equipment (GSE) rack knee bracket for handling a spacelab rack. The geometric center of gravity was calculated for the upper and lower part of the rack and found to be in the center of
Miller, Lunelle
core   +1 more source

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