Search results for "structures"
showing 10 items of 4815 documents
Gill area explains deviations from body size–metabolic rate relationship in teleost fishes
2022
Whether gill area constrains fish metabolism through oxygen limitation is a debated topic. Here, the authors provide insights into this question by analysing mass-specific metabolic rates across 44 teleost fishes extracted from FishBase. They explore whether species deviations from metabolic rates predicted by body mass can be explained by species gill area. They show that the gill area explains c. 26%–28% of species-level deviations from mass-specific metabolic rates. Their findings suggest that gill area might indeed be one of the factors limiting metabolic rate in fishes.
High-Performance Lead-Acid Batteries Enabled by Pb and PbO2 Nanostructured Electrodes: Effect of Operating Temperature
2021
Lead-acid batteries are now widely used for energy storage, as result of an established and reliable technology. In the last decade, several studies have been carried out to improve the performance of this type of batteries, with the main objective to replace the conventional plates with innovative electrodes with improved stability, increased capacity and a larger active surface. Such studies ultimately aim to improve the kinetics of electrochemical conversion reactions at the electrode-solution interface and to guarantee a good electrical continuity during the repeated charge/discharge cycles. To achieve these objectives, our contribution focuses on the employment of nanostructured electr…
Religiosity and social support in Polish older adults: the mediating role of wisdom. Perspectives on Lars Tornstam’s theory of gerotranscendence
2021
Objectives: The purpose of this study was to examine whether wisdom is a mediator in the relation-ships between religious meaning system and social support among older adults. According to the theory of gerotranscendence, associations of religiousness and social support are complex and sug- gest the existence of wisdom in their internal structures. Method: The study included 466 persons aged 50–75. Three measures were used: Religious Meaning System Scale (RMSS), Three-Dimensional Wisdom Scale (3D-WS) and Berlin Social Support Scales (BSSS). Results: The analyses allowed for a partial verification of the hypothesis that wisdom is a mediator in the relationship between the religious meaning s…
Heat Shock Protein 60 in Hepatocellular Carcinoma: Insights and Perspectives
2020
Heat shock protein 60 (HSP60) is a mitochondrial chaperone that is implicated in physiological and pathological processes. For instance, it contributes to protein folding and stability, translocation of mitochondrial proteins, and apoptosis. Variations in the expression levels of HSP60 have been correlated to various diseases and cancers, including hepatocellular carcinoma (HCC). Unlike other HSPs which clearly increase in some cancers, data about HSP60 levels in HCC are controversial and difficult to interpret. In the current review, we summarize and simplify the current knowledge about the role of HSP60 in HCC. In addition, we highlight the possibility of its targeting, using chemical com…
Fabrication of free-standing piezoelectric nanostructures for thermal transport studies
2007
Evaluación de signos tomográficos no exudativos en casos de degeneración macular asociada a la edad de tipo exudativo
2019
Objetivo: analizar la prevalencia de signos tomográficos no exudativos (onion sign, pseudoswelling, tubulación de la retina externa (ORT), pseudoquistes, subretinal clefts y atrofia macular) en pacientes con degeneración macular asociada a la edad (DMAE) neovascular. Material y métodos: 174 ojos de pacientes con DMAE neovascular que no habían recibido tratamiento previo fueron incluidos en el estudio. Se valoró la agudeza visual, el espesor central de la retina, la actividad de la neovascularización (NV) y la aparición o no de los distintos signos objeto de estudio en los tiempos 0 (visita inicial), 4 meses, 1 año, año y medio y a los 2 y 3 años de seguimiento. Se evaluaron también: la edad…
A survey on algebraic dilatations
2023
In this text, we wish to provide the reader with a short guide to recent works on the theory of dilatations in Commutative Algebra and Algebraic Geometry. These works fall naturally into two categories: one emphasises foundational and theoretical aspects and the other applications to existing theories.
To Show, But Not to Disclose. The Willingness of Polish Political Parties to Disclose Information On their Structures
2018
Abstract Constituting the key element of a democratic system, political parties are among entities obliged by the Polish legislator to comply with the principle of disclosure by providing public information. The main objective of this paper is to determine the level of Polish political parties’ disclosure, understood here as their willingness to disclose information on their own structures. It seems that the practice of disclosing such basic organizational data may constitute a specific measure of Polish political parties’ respect for the idea of disclosure. The subject matter of the conducted research was particular parties’ sites in the Public Information Bulletin as well as their officia…
LCA of Different Construction Choices for a Double-Track Railway Line for Sustainability Evaluations
2023
The international commitment to achieve carbon neutrality in the next few decades has oriented human activities towards the preservation of natural and non-renewable resources. In this context, a great research effort has been devoted to the search for sustainable solutions for the infrastructure construction sector, based on a thorough assessment of the environmental impact (EI). In this regards, Life Cycle Assessment (LCA) is considered one of the main components of Environmental Impact Assessment (EIA) and, for a comprehensive analysis, all the costs incurred by stakeholders during the useful life of the infrastructure should also be taken into account, applying the Life Cycle Cost (LCC)…
Shell morphology of the unionid mussels (Anodonta anatina, Unio pictorum and U. tumidus) in relation to gender and trematode parasitism
2015
Freshwater mussels (Unionoida) show great variability in shell morphology which can be associated with differences in habitat, sex and/or parasite infection. Three unionid mussel species, (Anodonta anatina, Unio pictorum and Unio tumidus) were collected from two sites Lake Saravesi, (Laukaa) and Lake Kuivasjarvi, (Oulu), between May - October 2012. Intraspecific trends that were associated with the mussels’ sex and/or parasites infection were studied and observations were made on how sex and parasite infection could have a role in shells morphological characters/patterns. The study revealed a range of morphometric differences among and across populations, as well as, within and between spec…