Search results for "Dam"
showing 10 items of 3828 documents
Orientación temporal y actitudes hacia las conductas económicas de ahorro y endeudamiento
2016
El comportamiento económico está estrechamente relacionado con aspectos psicológicos individuales y psicosociales. Actualmente, las propuestas para explicar la conducta económica tienen muy presente la importancia de los aspectos psicológicos, lo que justifica el abordaje de su estudio desde un enfoque económico y psicológico. Una decisión económica suele implicar la resolución de un conflicto fundamental: ahorrar o gastar. El gasto, cuando es inasumible, puede renunciarse a él, ahorrar para acumular el capital necesario o bien pedir prestada la cantidad necesaria, es decir, endeudarse. Por ello, partiendo de la consideración de que el ahorro y el endeudamiento son dos de las conductas más …
On the second-order regularity of solutions to the parabolic p-Laplace equation
2022
AbstractIn this paper, we study the second-order Sobolev regularity of solutions to the parabolic p-Laplace equation. For any p-parabolic function u, we show that $$D(\left| Du\right| ^{\frac{p-2+s}{2}}Du)$$ D ( D u p - 2 + s 2 D u ) exists as a function and belongs to $$L^{2}_{\text {loc}}$$ L loc 2 with $$s>-1$$ s > - 1 and $$1<p<\infty $$ 1 < p < ∞ . The range of s is sharp.
Oxidation of aromatic alcohols in irradiated aqueous suspensions of commercial and home-prepared rutile TiO(2): a selectivity study.
2008
WOS: 000256241700021
Oxysterols Incorporate in Primary Porcine Retinal Pigment Epithelial Cells and Induce Inflammation and Oxidative Stress
2006
International audience; Purpose: : Aging is associated with an accumulation of cholesterol in the Bruch’s membrane. Cholesterol is prone to undergo oxidation and to generate oxysterols that have cytotoxic properties. The aim of this study was to evaluate the effects of oxysterols on cell viability, oxidative stress and inflammation and to measure oxysterol incorporation in primary porcine retinal pigment epithelial (RPE) cell cultures. Methods: : Porcine RPE cells were incubated with oxysterols (24S–hydroxycholesterol, 24OH ; 25–hydroxycholesterol, 25OH and 7–ketocholesterol, 7K) (100µg, 50µM) for 24 and 48h. Cell viability was evaluated by measuring mitochondrial succinate dehydrogenase (S…
Influence of aryl hydrocarbon- (Ah) receptor and genotoxins on DNA repair gene expression and cell survival of mouse hepatoma cells
2009
The aryl hydrocarbon receptor (AhR) mediates toxicity of a variety of environmental pollutants such as polycyclic aromatic hydrocarbons (PAHs) and dioxins. However, the underlying mechanisms and genetic programmes regulated by AhR to cause adverse effects but also to counteract poisoning are still poorly understood. Here we analysed the effects of two AhR ligands, benzo[a]pyrene (B[a]P), a DNA damaging tumour initiator and promotor and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), a pure tumour promoter, on cell survival and on nucleotide excision repair (NER) gene expression. NER deals with so called "bulky" DNA adducts including those generated by enzymatically activated B[a]P. Therefore, t…
Cell-cycle control in cell-biomaterial interactions
2000
Current biocompatibility testing involves the demonstration of cell proliferation, which is usually interpreted as a sign of positive biocompatibility when the materials sustain cell proliferation. As the field of biomaterials research is rapidly moving toward tissue-engineered devices and hybrid organs, control of cell function has become a main topic. Cell function, which involves specific differentiation pathways, cannot be separated from cell-cycle control. The study of cell-cycle control is an important extension of routine proliferation assays and has extensive roots in developmental and tumor biology. We studied the expression of the tumour suppressor gene p53 and the proliferation-a…
UV-B exposure causes DNA damage and changes in protein expression in northern pike (Esox lucius) posthatched embryos.
2012
The ongoing anthropogenically caused ozone depletion and climate change has increased the amount of biologically harmful UV-B radiation, which is detrimental to fish in embryonal stages. The effects of UV-B radiation on the levels and locations of DNA damage manifested as cyclobutane pyrimidine dimers (CPDs), heat shock protein 70 (HSP70) and p53 protein in newly hatched embryos of pike were examined. Pike larvae were exposed in the laboratory to current and enhanced doses of UV-B radiation. UV-B exposure caused the formation of CPDs in a fluence rate-dependent manner, and the CPDs were found deeper in the tissues with increasing fluence rates. UV-B radiation induced HSP70 in epidermis, and…
Digital control circuitry for the p53 dynamics in cancer cell and apoptosis
2010
Abstract Experimental work and theoretical models deduce a “digital” response of the p53 transcription factor when genomic integrity is damaged. The mutual influence of p53 and its antagonist, the Mdm2 oncogene, is closed in a feedback. This paper proposes an aerospace-based architecture for translating the p53/Mdm2/DNA damage network into a digital circuitry in which the optimal control theory is applied for obtaining the requested dynamic evolutions of some considered cell species for repairing a DNA damage. The purpose of this paper is to demonstrate the usefulness of such digital circuitry design to detect and predict the cell species dynamics for shedding light on their inner and mutua…
Commmento degli artt. 93-100 del D.Lg. 6 settembre 2005, n. 206 - Codice del Consumo
2010
Il commento investe la disciplina delle consenseguenze dell'inadempimento del venditore e del tour operator nell'ambito del contratto di pacchetto turistico. Lo studio affronata i temi della responsabilità contrattuale del venditore e del tour operator per violazione degli obblighi su di loro incombenti e poi affronta il problema delle voci di danno, patrimoniale e non, e della loro liquidazione. Il commento si sofferma anche sulla disciplina del reclamo, indagandone la natura, e sulla previsione dell'obbligo per i professionisti di stipulare un contratto di assicurazione della responsabilità civile così da garantire al consumatore il soddisfacimento del proprio credito di risarcimento del …
Il progetto di Giuseppe Patricolo per il restauro ottocentesco del “soffitto monumentale”
2020
Lo studio esamina il cantiere di restauro del soffitto monumentale di palazzo Chiaramonte, riconoscendolo come un episodio importante per Palermo e per la lunga storia delle trasformazioni del palazzo trecentesco, una storia di scoperte, collaborazioni e progetti di restauro che costituiscono il contributo essenziale per la comprensione del valore monumentale del soffitto ligneo decorato. Nel 1886 Camillo Boito visita Palermo come componente di una commissione governativa, composta anche da Felice Bernabei, Alfredo D’Andrade e Francesco Bongioannini e si pronuncia sull’annosa questione dei ripristini del palazzo Chiaromonte, sostenendo fortemente la candidatura di Giuseppe Patricolo come pr…