Search results for "Dam"
showing 10 items of 3828 documents
Catalytic Conversion of Glucose and Chlorella sp. into Furans in the Presence of Niobium Oxide
2023
A series of Nb2O5 solid catalysts have been prepared to be used for the catalytic dehydration of glucose and sugars from algae Chlorella sp. into added value furans. The glucose transformation gave rise to 5-hydroxymethylfurfural (5-HMF). Chlorella sp. was used in the same catalytic conditions to be valorised to furans. By preliminary studies we concluded that the algae aqueous suspension needed a previous treatment in the presence of SiO2 pellets to liberate the carbohydrates that in the catalytic reaction in the presence of Nb2O5 materials gave rise 5-HMF and furfural. The best operative conditions and Nb2O5 catalysts were individuated. The most performant Nb2O5 catalyst also showed an ex…
Brain Opioid Activity and Oxidative Injury: Different Molecular Scenarios Connecting Celiac Disease and Autistic Spectrum Disorder
2020
Celiac Disease (CD) is an immune-mediated disease triggered by the ingestion of wheat gliadin and related prolamins from other cereals, such as barley and rye. Immunity against these cereal-derived proteins is mediated by pro-inflammatory cytokines produced by both innate and adaptive system response in individuals unable to adequately digest them. Peptides generated in this condition are absorbed across the gut barrier, which in these patients is characterized by the deregulation of its permeability. Here, we discuss a possible correlation between CD and Autistic Spectrum Disorder (ASD) pathogenesis. ASD can be induced by an excessive and inappropriate brain opioid activity during the neon…
A model for predicting the mixed-mode fatigue crack growth in a bonded joint
2013
Bonded joints are highly sensitive to the presence of defects and to the degradation phenomena, and this aspect represents the primary obstacle to their use in different structural engineering applications. Delamination in a bonded joint represents, in fact, one of the primary, most common and insidious causes of damage. In this paper, a numerical–experimental study on the crack propagation along the adhesive layer of a bonded joint specimen is carried out. Experimental study is focused on the evaluation of the damage modalities of a bonded joint when the specimens are subject to fatigue load. Experimental tests are compared with the results of several numerical analysis performed in ANSYS …
On the Fundamental Period of Infilled RC Buildings
2015
This paper investigates the fundamental period of vibration of RC buildings by means of finite element macro-modelling and modal eigenvalue analysis. As a base study, a number of 14-storey RC buildings have been considered \"according to code designed\" and \"according to code non-designed\". Several parameters have been studied including the number of spans; the span length in the direction of motion; the stiffness of the infills; the percentage openings of the infills and; the location of the soft storeys. The computed values of the fundamental period are compared against those obtained from seismic code and equations proposed by various researchers in the literature. From the analysis of…
Problematyczne potomstwo "Pana Tadeusza" : wokół pewnego tekstu rocznicowego
2018
Progeny of “Sir Thaddeus” (1897), a less known essay by literary critic Cezary Jellenta [Napoleon Hirszband], presents an interesting attempt to discern and estimate novels of the 19th century Polish realists as originated from the great Mickiewicz’s poem. According to Jellenta, there are several social, national or aesthetic parallels existing between this famous epic work – a kind of architext and paradigm of Polish culture in general – and the well-known texts by Prus, Orzeszkowa, Sienkiewicz, Konopnicka or Witkiewicz, as well the unknown novel of Galician writer Alfred Nossig. Jellenta’s discourse and his often vague argumentation are involved both in traditional apology for Mickiewicz’…
Rain on building façades
2006
Rain is one of the main causes of moisture damage to the building envelope, leading to problems such as rain penetration, frost and salt damage, discoloration by leaching, soiling by differential washing, etc. The potential of deterioration due to rain depends on the façade material, the junction of building envelope components, the overall geometry of the building, but also the presence or absence of modulation on the façade. In this paper, Computational fluid dynamics (CFD) simulations are used to analyze these effects and illustrated with examples taken in Sicily. It is firstly shown that buildings protect themselves from driving rain due to the wind blocking effect, but that façade open…
Laskennalliset menetelmät foldameeritutkimuksessa
2016
Foldameerit ovat oligomeerejä, joilla on stabiili sekundäärirakenne eli niillä on kyky laskostua. Foldameerien syntetisointi ja karakterisointi on usein melko vaikeaa. Tästä syystä niiden rakenteen ja ominaisuuksien tutkimiseksi on kehitelty useita erilaisia laskennallisia malleja. Laskennalliset menetelmät jakautuvat kvanttimekaniikan menetelmiin ja molekyylidynamiikkaan. Molekyylidynamiikka perustuu klassiseen mekaniikkaan. Siinä yksittäisiä atomeja käsitellään palloina, joilla on muuttumaton varaus. Atomien väliset sidokset on yksinkertaistettu jousiksi, joilla on tasapainotila, joka on sama kuin kokeellinen tai laskennallinen sidospituus. Kvanttimekaniikan menetelmillä voidaan tutkia mo…
Ethica cordis
2007
La ética del discurso es un óptimo fundamento para la ética cívica de una sociedad moralmente pluralista, pero siempre que no se contente con su dimensión procedimental, sino que saque a la luz su dimensión cordial. Sólo que entonces pasa de ser ética del discurso a ethica cordis. El presente trabajo intenta dar ese paso, y con ese fin cubre tres etapas: 1) en qué medida son necesarios los vínculos, 2) en qué consiste el vínculo discursivo, 3) cómo el vínculo comunicativo incluye el discursivo y va más allá, dando lugar a una ética de la razón cordial. Discourse ethics is the best foundation for the civil ethics of a morally pluralist society, but only on condition that it does not remain m…
About time
2019
Purpose The purpose of this paper seeks to develop a motivation-based complementary framework for temporally dynamic user preferences to facilitate optimal timing in web personalisation. It also aims to highlight the benefits of considering user motivation when addressing issues in temporal dynamics. Design/methodology/approach Through theory, a complementary framework and propositions for motivation-based temporal dynamics for further testing are created. The framework is validated by feeding back findings, whereas some of the propositions are validated through an experiment. Findings The suggested framework distinguishes two ways (identifying/learning and shifting) of using a motive-base…
Fundamental movement skills and weight status in children: A systematic review
2017
Background Obesity has become a major health challenge in children. Fundamental movement skills (FMS) are suggested to have an important role for being physically active and decreasing the risk of obesity. This systematic review aimed to give an overview of studies providing evidence for a relationship between FMS and the weight status in children. Material/Methods A systematic search of five electronic databases (MEDLINE (PubMed), SportDiscus, ERIC, PsycInfo and SCOPUS) was conducted in January 2015. Studies examining associations between FMS and weight status in children aged 3–12 years were included. Results The final sample included 12 cross-sectional studies. Seven studies found statis…