Search results for "city."
showing 10 items of 12094 documents
Vortex dynamics in rotating counterflow and plane Couette and Poiseuille turbulence in superfluid Helium
2008
An equation previously proposed to describe the evolution of vortex line density in rotating counterflow turbulent tangles in superfluid helium is generalized to incorporate nonvanishing barycentric velocity and velocity gradients. Our generalization is compared with an analogous approach proposed by Lipniacki, and with experimental results by Swanson et al. in rotating counterflow, and it is used to evaluate the vortex density in plane Couette and Poiseuille flows of superfluid helium.
Inhibition of Rac1 signaling by lovastatin protects against anthracycline-induced cardiac toxicity
2011
Normal tissue damage limits the efficacy of anticancer therapy. For anthracyclines, the clinically most relevant adverse effect is cardiotoxicity. The mechanisms involved are poorly understood and putative cardioprotectants are controversially discussed. Here, we show that the lipid-lowering drug lovastatin protects rat H9c2 cardiomyoblasts from doxorubicin in vitro. Protection by lovastatin is related to inhibition of the Ras-homologous GTPase Rac1. It rests on a reduced formation of DNA double-strand breaks, resulting from the inhibition of topoisomerase II by doxorubicin. Doxorubicin transport and reactive oxygen species are not involved. Protection by lovastatin was confirmed in vivo. I…
Aplidin® induces JNK-dependent apoptosis in human breast cancer cells via alteration of glutathione homeostasis, Rac1 GTPase activation, and MKP-1 ph…
2006
Aplidin® is an antitumor agent in phase II clinical trials that induces apoptosis through the sustained activation of Jun N-terminal kinase (JNK). We report that Aplidin® alters glutathione homeostasis increasing the ratio of oxidized to reduced forms (GSSG/GSH). Aplidin® generates reactive oxygen species and disrupts the mitochondrial membrane potential. Exogenous GSH inhibits these effects and also JNK activation and cell death. We found two mechanisms by which Aplidin® activates JNK: rapid activation of Rac1 small GTPase and downregulation of MKP-1 phosphatase. Rac1 activation was diminished by GSH and enhanced by L-buthionine (SR)-sulfoximine, which inhibits GSH synthesis. Downregulatio…
Generalized wave propagation problems and discrete exterior calculus
2018
We introduce a general class of second-order boundary value problems unifying application areas such as acoustics, electromagnetism, elastodynamics, quantum mechanics, and so on, into a single framework. This also enables us to solve wave propagation problems very efficiently with a single software system. The solution method precisely follows the conservation laws in finite-dimensional systems, whereas the constitutive relations are imposed approximately. We employ discrete exterior calculus for the spatial discretization, use natural crystal structures for three-dimensional meshing, and derive a “discrete Hodge” adapted to harmonic wave. The numerical experiments indicate that the cumulat…
Migrant rap in the periphery : performing politics of belonging
2017
Focusing on a YouTube performance by an emergent Finnish Somali rapper and the audience responses it has generated, this paper looks at ways in which rap music engages with the issue of belonging. Drawing on recent theorizations of belonging as a multi-dimensional, contingent and fluid process, along with sociolinguistic work on globalization and superdiversity, Finnish hip hop culture and popular cultural practices in social media, the paper investigates how belonging is performatively and multi-semiotically interrogated in its online context. It shows how rap can serve as a significant site and channel for new voices in turbulent social settings characterized by rapid social change and co…
Hyperspectral Imaging of Macroinvertebrates : a Pilot Study for Detecting Metal Contamination in Aquatic Ecosystems
2018
The applicability of spectral analysis in detection of freshwater metal contamination was assessed by developing and testing a novel hyperspectral imaging (HSI) application for aquatic insect larvae (Trichoptera: Hydropsychidae). Larvae were first exposed to four different cadmium (Cd) concentrations: 0, 1, 10, and 100 μg L−1 for 96 h. Individual larvae were then preserved in ethanol, inspected with microscopy for the number of anomalies in larval gills, and imaged by hyperspectral camera operating with wavebands between 500 and 850 nm. Three additional larvae from each exposure were analyzed for tissue Cd concentration. Although the larval tissue Cd concentrations correlated positively wit…
The south coast of Palermo. Planning the resilient city
2017
Il contributo individua i temi progettuali per la definizione di temi di progetto sul territorio della cosiddetta "costa sud" della città di Palermo. Il contributo descrive i temi di sviluppo, analizza le risorse presenti e definisce alcuni elementi progettuali che verranno sviluppati sia all'interno della ricerca presentata nel volume, sia nelle politiche di trasformazione urbana del Comune di Palermo. The paper identifies the design themes for project in the so-called "south coast" of the city of Palermo. The contribution describes the development themes, analyzes the resources present and defines some design elements that will be developed both within the research presented in the volume…
Disrupted Spatial Organization of Cued Exogenous Attention Persists Into Adulthood in Developmental Dyslexia
2021
Purpose: Abnormal exogenous attention orienting and diffused spatial distribution of attention have been associated with reading impairment in children with developmental dyslexia. However, studies in adults have failed to replicate such relationships. The goal of the present study was to address this issue by assessing exogenous visual attention and its peripheral spatial distribution in adults with developmental dyslexia.Methods: We measured response times, accuracy and eye movements of 18 dyslexics and 19 typical readers in a cued discrimination paradigm, in which stimuli were presented at different peripheral eccentricities.Results: Results showed that adults with developmental dyslexia…
La relevancia de la investigación social a nivel local para el diseño de políticas municipales: el diagnóstico social de la ciudad de Valencia
2019
Presentamos algunos de los resultados obtenidos con la investigación ?Diagnóstico Social de la Ciudad de València, 2017?, realizada en el marco de un convenio de colaboración entre el Ayuntamiento de València, a través de la Concejalía de Servicios Sociales y del Servicio de Bienestar Social e Integración y la Universitat de València (Red Incluye). Uno de los rasgos más relevantes de la investigación fue su enfoque local, territorial y subterritorial en el desarrollo metodológico y técnico de la investigación al estarorientada a proporcionar información actualizada, inédita y relevante para las funciones del personal técnico de las once áreas de los Centros Municipales de Servicios Sociales…
Sociology of Ethnic Multiculturalism: crisis of integration, identity, reciprocity,governance
2012
When a multiethnic society can be defined multicultural? The analysis proposed in this book aims to contribute to the understanding of integration policies, of trends and their effects on social, economic and political , and the influence they have on migration politics. The analysis is also based on the political and cultural debate regarding the failure (or decline) of Western models of integration. The ipothesis supported in this work is that the alleged failure of multiculturalism on the basis of ethnicity, especially in Europe, reflecting a social political crisis of the western countries, that being immature to develop postmodern values of coexistence between each other; on the one ha…