Search results for "GRI"
showing 10 items of 10209 documents
Die phylogenetische Stellung des Neandertalers
1999
3-Phase grid-connected building integrated photovoltaic system with reactive power control capability
2020
Abstract Recently, a tendency in the growing of grid-connected building integrated photovoltaic (BIPV) systems has been noticed in most countries. Hence, high penetration of PV power into the system network can be observed in many points in the network. This may cause severe problems on the distribution network due to the intermittent nature of PV systems. As a feasible solution, the reactive power capability of voltage source inverter in PV systems can be employed rather than approaching expensive grid infrastructures in the distribution network. The purpose of this study is to implement a 3-phase grid-connected (BIPV) system with reactive power control to regulate the system voltage and i…
Analysing the effects of power swing on wind farms using instantaneous impedances
2020
Abstract Most of the grid disturbances happen due to the presence of faults and power swing. This article focuses on power swing in view of the amount of penetration of renewable energy resources especially the wind farms. There are two sections. First section approached power swing by deriving a mathematical expression which would be able to track the locus of impedance in time domain and subsequently analyze resistance and reactance simultaneously with respect to time. It used a grid comprising of generator, transmission line and load. The derived expression was compared with a power swing generated using RTDS model and the results were analyzed in R-X plane. Second section analyses the i…
Book reviews - Crítica de libros - Crítica de livros (Historia Agraria, 82)
2020
BOOK REVIEWS - CRITICA DE LIBROS - CRITICA DE LIVROS Patrick Doyle: Civilising Rural Ireland: The Co-Operative Movement, Development and the Nation-State, 1889-1939 Tony Varley Ana Cristina Roque, Cristina Brito y Cecilia Veracini (Eds.): Peoples, Nature and Environments: Learning to Live Together Antonio Ortega Santos Sylvie Bépoix y Hervé Richard (Dirs.): La forêt au Moyen Âge Juan José Larrea Manuel González de Molina, David Soto, Gloria Guzmán Casado, Juan Infante, Eduardo Aguilera, Jaime Vila y Roberto García Ruíz: Historia de la Agricultura Española desde una perspectiva biofísica, 1900-2010 Ernesto Clar Enric Saguer (Ed.): Els cortals empordanesos, del segle xiii al xxi. Sis estudis …
Viewing CLIL through the eyes of former pupils : Insights into foreign language and intercultural attitudes
2018
This article examines the long-term effects of CLIL on former pupils’ foreign language and intercultural attitudes. The 24 participants, who received English-medium CLIL for nine years in the 1990s, were interviewed and the data analyzed using thematic analysis. The participants generally felt that CLIL had had a very positive effect on their target language attitudes. However, many considered that CLIL had affected negatively on their attitudes towards other foreign languages. The perceptions regarding the effect of CLIL on intercultural attitudes diverged more. The study elucidates the long-standing impact CLIL can have on individuals’ attitudes yielding insights into future CLIL educatio…
Direct Observation of Nanometer-Scale Pores of Melittin in Supported Lipid Monolayers
2015
Melittin is the most studied membrane-active peptide and archetype within a large and diverse group of pore formers. However, the molecular characteristics of melittin pores remain largely unknown. Herein, we show by atomic force microscopy (AFM) that lipid monolayers in the presence of melittin are decorated with numerous regularly shaped circular pores that can be distinguished from nonspecific monolayer defects. The specificity of these pores is reinforced through a statistical evaluation of depressions found in Langmuir-Blodgett monolayers in the presence and absence of melittin, which eventually allows characterization of the melittin-induced pores at a quantitative low-resolution leve…
Partition of Indicaxanthin in Membrane Biomimetic Systems. A Kinetic and Modeling Approach
2009
The solubilization site of indicaxanthin (Ind) in lipid bilayers was investigated by the kinetics of Ind oxidation by peroxyl radicals in water and in aqueous/L-alpha-dipalmitoyl-phosphatidylcholine (DPPC) vesicles, pH 7.4, and 37.0 and 48.0 degrees C, that is, in a gel-like and a crystal liquidlike bilayer state, respectively. The time-dependent Ind absorbance decay, matched with a successful simulation of the reaction kinetic mechanism by Gepasi software, supported a multistep pathway. Computer-assisted analysis allowed calculation of the rate constants associated with the reactions involved, the values of which decreased with increasing DPPC concentration. The binding constant calculated…
Pašapkalpošanās prasmju veicināšana 1,5 – 3 gadus veciem bērniem pirmsskolas izglītības iestādē, izmantojot vingrinājumus un rotaļas
2021
Darba nosaukums: Pašapkalpošanās prasmju veicināšana 1,5 – 3 gadus veciem bērniem pirmsskolas izglītības iestādē, izmantojot vingrinājumus un rotaļas Darba autore: Madara Freidenfelde Darba vadītāja: Līga Āboltiņa Pētījuma mērķis: Izzināt pašapkalpošanās prasmju iespējas 1,5 – 3 gadus veciem bērniem pirmsskolas izglītības iestādē izmantojot vingrinājumus un rotaļas Darbs sastāv no divām daļām: 1.Teorētiskā daļa, kas sastāv no vairāku autoru un avotu teorētiskās literatūras apkopošanas un secinājumu veikšanas, par pašapkalpošanās prasmēm, to veicināšanu pirmsskolā izmantojot vingrinājumus un rotaļas 2.Empīriskā daļa, kas sastāv no pedagoģiskās novērošanas, pedagoģiskās izmēģinājumu darbības,…
A Tool to Assess Architectural Education from the Sustainable Development Perspective and the Students' Viewpoint
2021
[EN] Architectural education plays a fundamental role in achieving sustainable development by training future professionals who can contribute to sustainability through their practice. Nevertheless, to ensure the introduction of sustainable development in the education of future architects, it is fundamental to understand what is being done and what could be improved. Despite this, a big gap has been detected in the assessment of architectural education in Spain and worldwide. Thus, a close-ended questionnaire for students has been designed based on the outcomes from a literature review, exploratory interviews with specialists, and the qualitative analysis of two schools of architecture. Ad…
Fishing pressure impacts the abundance gradient of European lobsters across the borders of a newly established marine protected area
2019
Marine protected areas (MPAs) are considered viable fisheries management tools due to their potential benefits of adult spillover and recruitment subsidy to nearby fisheries. However, before–after control–impact studies that explore the biological and fishery effects of MPAs to surrounding fisheries are scarce. We present results from a fine-scale spatial gradient study conducted before and after the implementation of a 5 km 2 lobster MPA in southern Norway. A significant nonlinear response in lobster abundance, estimated as catch-per-unit-effort (CPUE) from experimental fishing, was detected within 2 years of protection. After 4 years, CPUE values inside the MPA had increased by a magnitu…