Institution
Technological Educational Institute of Western Macedonia
About: Technological Educational Institute of Western Macedonia is a based out in . It is known for research contribution in the topics: Symplectic geometry & Numerical integration. The organization has 291 authors who have published 522 publications receiving 7682 citations. The organization is also known as: TEI of West Macedonia & TEI of Western Macedonia.
Papers published on a yearly basis
Papers
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01 May 2019
TL;DR: A thorough analysis is performed to evaluate the impact of the battery energy storage systems (BESSs) on the electrical behavior of the prosumers using real measurements acquired from three pilot case studies located at the region of Northen Greece.
Abstract: In this paper, a thorough analysis is performed to evaluate the impact of the battery energy storage systems (BESSs) on the electrical behavior of the prosumers. Its distinct feature is the use of real measurements acquired from three pilot case studies located at the region of Northen Greece. Two types of BESS technologies are examined, namely the lead-acid OPzV and the lithium-ion LiFePO4 batteries. The evaluation process is implemented using the most well-known indicators, i.e., the self-consumption and the self-sufficiency rates.
12 citations
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TL;DR: It is made clear that the presence of dioxins and persistent organic pollutants in human milk is not an indication for avoiding breastfeeding, and the beneficial effect of breastfeeding as the optimal food source for newborn babies should not be disregarded.
Abstract: Publications produced over the past 20 years regarding the concentration of xenobiotics in human and dietary milk were evaluated, focusing primarily on persistent organic pollutants (e.g. polychlorinated biphenyls, flame retardants), pesticides (e.g organochlorine) and mycotoxins. In general, countries of low industrialization rate present low levels of dietary milk contamination with dioxins compared to those with high rate of industrialization. According to published data, the most common persistent organic pollutants detected in breast and dietary milk are dichlorodiphenyltrichloroethane compounds, hexachlorocyclohexane, and hexachlorobenzene. Even though the potential risks of persistent organic pollutants in human milk have been acknowledged, the beneficial effect of breastfeeding as the optimal food source for newborn babies should not be disregarded. Especially when sharing information with the general public, it should be made clear that the presence of dioxins and persistent organic pollutants in human milk is not an indication for avoiding breastfeeding. The implications of xenobiotics in human and dietary milk is a matter of growing importance and warrants future work given its important health effects.
11 citations
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TL;DR: Interannual and monthly variations of herbage production and nutritive value regarding grazing ruminants' needs and welfare were evaluated in three grasslands located at different altitudes in northern Greece during 2015–2016.
Abstract: . Interannual and monthly variations of herbage production and nutritive value
regarding grazing ruminants' needs and welfare were evaluated in three
grasslands (semi-mountainous, mountainous and sub-alpine) located at
different altitudes (480–900, 901–1500 and 1501–2334 m,
respectively) in northern Greece during 2015–2016. Herbage biomass was
collected from 30 experimental cages (10 per grassland), weighed, dried at
65 ∘ C, milled and analyzed for crude protein (CP), neutral detergent fiber (NDF), acid
detergent fiber (ADF), lignin, calcium (Ca) and phosphorus (P) content
and in vitro dry matter digestibility (IVDMD). The sub-alpine grassland was the most
productive (1031 and 1231 kg DM ha −1 ) with the
highest mean annual herbage CP content (93 and 87 g kg −1
dry matter; DM) for 2015 and 2016, respectively. CP content was sufficient to meet small
ruminants' and beef cattle maintenance requirements until April and May in
the semi-mountainous and mountainous grasslands, respectively, while it
could cover the above requirements in the sub-alpine grassland until June and
August, respectively. The herbage Ca concentration was higher than the
grazing ruminants' needs, while the phosphorus concentration was
insufficient. Protein and phosphorus supplementation should be provided to
animals to cover their maintenance requirements during the whole period and
to reach high levels of welfare. Even though grazing is considered as a
welfare-friendly procedure, it is uncertain whether all the welfare
principals are satisfied in extensive production systems due to variations
of forage availability and nutritive value as well as the lack of
infrastructure in grasslands.
11 citations
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01 Sep 2018TL;DR: A significant improvement in energy losses, voltage and line ampacity profile is achieved by the introduction of BESS units in a Distribution Network with high PV Penetration.
Abstract: This paper focuses on the optimal siting of Battery Energy Storage Systems (BESS) in a Distribution Network with installed Photovoltaic Generation, in order to minimize the energy losses of the system. The bus voltage limit, as well as the ampacity level of the lines are taken into consideration as constraints, while the technical constraints of the BESSs have also been taken into account. Unified Particle Swarm Optimization is used as the solving optimization technique. Simulations are being carried out on IEEE-33 bus system regarding different scenarios and the results are presented and compared. A significant improvement in energy losses, voltage and line ampacity profile is achieved by the introduction of BESS units in a Distribution Network with high PV Penetration.
11 citations
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TL;DR: The Free (or Open) Boundary Condition (FBC) was proposed by Papanastasiou et al. as mentioned in this paper to handle truncated domains with synthetic boundaries where the outflow conditions are unknown.
Abstract: The Free (or Open) Boundary Condition (FBC, OBC) was proposed by Papanastasiou et al. (A new outflow boundary condition, Int. J. Numer. Meth. Fluids 14 (1992) 587–608) to handle truncated domains with synthetic boundaries where the outflow conditions are unknown. In the present work, implementation of the FBC has been tested also at inflow boundaries in several test problems of viscous or viscoelastic flow. The Finite Element Method (FEM) is used to provide numerical results for both cases of planar and axisymmetric domains under laminar, isothermal or non-isothermal, steady-state conditions for Newtonian and non-Newtonian fluids. The present results extend previous ones regarding the applicability of the FBC, since they convincingly show that the FBC can be used equally well at inflow boundaries, without having to resort to artificially set inlet profiles for a given flow rate.
11 citations
Authors
Showing all 291 results
Name | H-index | Papers | Citations |
---|---|---|---|
T. E. Simos | 77 | 458 | 16772 |
Petros Samaras | 32 | 128 | 3552 |
J. D. Vergados | 30 | 140 | 3373 |
Zacharoula Kalogiratou | 27 | 81 | 2372 |
Th. Monovasilis | 27 | 75 | 2223 |
Maria A. Goula | 25 | 70 | 2566 |
Nikolaos D. Charisiou | 22 | 51 | 1546 |
Apostolos K. Rizos | 22 | 77 | 1717 |
Ioannis Antoniadis | 21 | 126 | 2229 |
Georgios C. Christoforidis | 18 | 104 | 980 |
Ioannis Zuburtikudis | 17 | 44 | 1484 |
Eleftherios Bonos | 16 | 34 | 1026 |
Grigoris Giannarakis | 15 | 37 | 1088 |
Dimitrios J. Vergados | 15 | 62 | 914 |
A. G. Triantafyllou | 15 | 32 | 531 |