Results 31 to 40 of about 2,953,852 (350)

Stand-alone power supplies for relay protection [PDF]

Омский научный вестник, 2018
At present, telemetry and relay protection devices, which are located directly on the protected element of the electric power system or inside it, are increasingly used in the electric power industry. To supply them requires an autonomous source of low
T. A. Novozhilov, A. N. Novozhilov, A. O. Yusupova, G. Zh. Assainov   +3 more
doaj   +1 more source

Cost Optimization of a Stand-Alone Hybrid Energy System with Fuel Cell and PV

Energies, 2020
Renewable energy has become very popular in recent years. The amount of renewable generation has increased in both grid-connected and stand-alone systems.
Shakti Singh, Prachi Chauhan, Mohd Asim Aftab, I. Ali, S. Hussain, T. Ustun   +5 more
semanticscholar   +1 more source

Safety Evaluation of Lumbar Stand-Alone Cage [PDF]

한국정밀공학회지, 2017
Recently, interbody fusion cage devices have been developed and used for lumbar reconstruction. Stand-alone cages reduce segmental mobility. In this study, we evaluated mechanical properties and biocompatibility of lumbar stand-alone cages. Evaluation of
Mun-Hwan Lee, Sang Bok Kim, Eun-Yi Jeon, Minjung Kim, Eun Young Kim   +4 more
doaj   +1 more source

Economic performance of off-grid photovoltaic systems for irrigation [PDF]

Revista Brasileira de Engenharia Agrícola e Ambiental, 2022
Renewable energies are alternatives to replace fossil fuels and are crucial for the sustainability of the agricultural sector, besides being an important alternative for pumping water in irrigation.
Jhosefe Bruning, Adroaldo D. Robaina, Marcia X. Peiter, Miguel Chaiben Neto, Silvana A. Rodrigues, Laura D. Ferreira, Tonismar dos S. Pereira, Luiz P. Kayser   +7 more
doaj   +1 more source

Techno-Economic Analysis of Simplified Microcrystalline Cellulose Process

BioResources, 2014
This work presents a techno-economic analysis of two modelled microcrystalline cellulose (MCC) production facilities, a stand-alone mill, and a mill integrated into a chemical pulp mill, with annual production levels of 30,000 tons/year.
Kari Mikael Vanhatalo, Kari Eino Parviainen, Olli Pekka Dahl   +2 more
doaj   +1 more source

Use and usability of the dr. Bart app and its relation with health care utilisation and clinical outcomes in people with knee and/or hip osteoarthritis

BMC Health Services Research, 2021
Background Self-management is of paramount importance in the non-surgical treatment of knee/hip osteoarthritis (OA). Modern technologies offer the possibility of 24/7 self-management support. We developed an e-self-management application (dr.
Tim Pelle, Job van der Palen, Frank de Graaf, Frank H. J. van den Hoogen, Karen Bevers, Cornelia H. M. van den Ende   +5 more
doaj   +1 more source

New graphical interface for Sizing PV systems

Revue des Énergies Renouvelables, 2023
The objective of this work is to carry out a sizing program of the photovoltaic system isolated from the grid by determining the size of the subsystems that make up the photovoltaic generator, the batteries, the charge regulator and the transformers ...
Fatima Bouti, Khaled Touafek, Hafsia Haloui, Abdelkrim Khelifa   +3 more
doaj   +1 more source

High Performance Inverter For Renewable Energy Systems

Eletrônica de Potência, 2007
This paper makes an analysis of the current demand on inverters for stand-alone renewable energy applications, and shows that reliability, surge power capability and efficiency are the most important aspects to be considered. It is shown that multilevel
Sérgio Daher, Jürgen Schmid, Fernando Antunes   +2 more
doaj   +1 more source

Multi-level ACDF using standalone PEEK cages for the treatment of degenerative cervical myelopathy: Clinical and radiological assessment.

Egyptian Spine Journal, 2014
Background Data: Degenerative cervical myelopathy is a complex neurologic disorder that usually develops insidiously, although abrupt deterioration in function can occur.
Yasser Allam, Tarek Al-Feki
doaj   +1 more source

Dynamic load management and optimum sizing of stand-alone hybrid PV/Wind system. [PDF]

, 2015
Simulation algorithms for the sizing of stand-alone hybrid PV/Wind systems are a powerful tool in evaluating the optimum configuration that would cover the energy demand with a predefined reliability level at the lowest cost.
Diamantopoulos, N., Kaplani, Eleni, Ntafogiannis, P., Pappas, K.   +3 more
core   +1 more source