140 research outputs found
Alcune osservazioni accanto agli alimenta Italiae
No full textAfter reconstructing the framework of the historical problems evoked by the book of Rossella Laurendi, the author proposes some reflection over the well-known book of evergetism by Paul Veyne concerning economic history,ancient demography and imperial coinag
Malevic
No full textL'A. espone il percorso dell'artista russo dalla sua formazione simbolista fino alla produzione tarda, insieme ai suoi scritti. Si dà particolare importanza alle relazioni con gli scritti teosofici, la cultura occultista e la meditazione orientale. The Author examines the russian artist from his symbolistic education until the last production, and his writings also. Particularly important are the relationships with theosophical writings, occultist culture and Eastern meditation. Dossier allegato alla rivista "Art e Dossier", maggio 200
Arte contemporanea: le avanguardie storiche
No full textL'A. prende in esame i fauves, il cubismo, l'orfismo, l'espressionismo della "Brücke" e del "Blaue Reiter", il futurismo, il suprematismo, il neoplasticismo e il costruttivismo russo; nonché concezioni architettoniche tra "Art Nouveau" e "Bauhaus". In ogni capitolo si dedica particolare attenzione alle metodologie critiche dall'inizio del secolo ad oggi. The Author examines Fauvism, Cubism, Orfhism, Expressionism of "Die Brücke" and "Der Blaue Reiter", Futurism, Suprematism, Neoplasticism, russian Konstruktivism; and concepts of architecture in the period from "Art Nouveau" to "Bauhaus". In every chapter are particularly focused the critical-methodological approaches from beginning of the XX century up to now
Evaluación y desarrollo de modelos "in vitro" para la predicción de neurotoxicidad. Aproximación proteómica a la neurotoxicidad inducida por metilmercurio
No full text[spa] En los últimos años ha habido un creciente interés en la utilización de métodos "in vitro" para la detección del potencial tóxico de compuestos químicos que contribuyan en remplazar, reducir y reformar el uso de animales en experimentación. Distintas organizaciones nacionales e internacionales están trabajando en el desarrollo y la validación de métodos "in vitro" que proporcionen el mismo nivel de información que los modelos in vivo. Se estima que entre el 3-28 % de los compuestos químicos existentes son potencialmente neurotóxicos. Respondiendo a la necesidad de impulsar la utilización de métodos "in vitro" en el campo de la neurotoxicología, el Centro Europeo para la Validación de Métodos Alternativos (ECVAM) propuso la elaboración de una base de datos de métodos alternativos para la detección de compuestos químicos potencialmente neurotóxicos. Los objetivos planteados en este trabajo contemplan estudios bibliométricos y experimentales para (1) la creación de una bases de datos de métodos "in vitro" para la detección de compuestos químicos potencialmente neurotóxicos, (2) para la caracterización de proteínas y la identificación de marcadores de toxicidad mediante herramientas proteómicas utilizando como modelo celular cultivos primarios de células granulares de cerebelo de ratón y como agente tóxico el metilmercurio y (3) la evaluación de los mecanismos de muerte y neuroprotección de células granulares de cerebelo expuestos a metilmercurio. Tras un estudio bibliométrico, se propusieron 6 métodos in vitro para evaluar el potencial tóxico de compuestos químicos capaces de producir axonopatías y neuropatías retardadas, de alterar la transmisión nerviosa a través de los receptores GABAA, de los canales de sodio dependientes de voltaje y de los receptores ionotrópicos de glutamato, y de la utilización de los cultivos reagreagados de cerebro como modelo celular para la evaluación de neurotoxicidad en general. Estos métodos proporcionan información útil para una futura validación de los mismos (consultable en ecvam-dbalm.jrc.cec.eu.int). El metilmercurio (MeHg) es un contaminante ambiental con toxicidad selectiva para el SNC y en particular para las células granulares de cerebelo. El análisis proteómico de extractos proteicos procedentes de cultivos primarios de células granulares de cerebelo de ratón expuestos de forma prolongada a concentraciones subcitotóxicas de metilmercurio permitió identificar dos proteínas, la succinil CoA:3-cetoácido-CoA-transferasa I y la isoforma no muscular de la cofilina, cuya expresión disminuyó e incrementó en presencia de metilmercurio, respectivamente. La exposición prolongada de los cultivos primarios de células granulares de cerebelo a MeHg produce una muerte neuronal apoptótica tiempo y concentración dependiente que cursa por mecanismos no excitotóxicos, independientes de la activación de caspasa 3 y parcialmente dependientes de la liberación de la proteasa lisosomal catepsina D. Además la exposición a MeHg produjo un incremento de la peroxidación lipídica. En nuestro modelo experimental la muerte neuronal fue protegida por antioxidantes de amplio espectro hecho que sugiere que la muerte podría deberse al incremento de ROS intracelular.[eng] "Evaluation and development of alternative methods for prediction of neurotoxicity. Proteomic approach to methylmercury induced neurotoxicity": In the last years there has been a growing interest in using "in vitro" methods to detect toxic potentially chemical compounds, contributing in replacement, reduction and refinement animal use in life science research. Several organizations are working together to develop and validate alternative methods. Responding to the necessity to promote alternative methods in the neurotoxicity field, European Centre for the Validation of Alternative Methods (ECVAM) proposed the elaboration of an alternative methods database to detect chemical compounds potentially neurotoxic. The goals of this thesis include both bibliographic and experimental studies to (1) create a database for "in vitro" methods to detect neurotoxic chemical compounds, (2) to identify toxic biomarkers by using proteomics techniques in primary cultures of mouse cerebellar granule cells exposed to methylmercury (MeHg) and (3) to evaluate cell death and neuroprotection mechanisms involved in long-term MeHg toxicity in primary cultures of mouse cerebellar granule cells. As a result of the bibliographic study, 6 "in vitro" methods were proposed to evaluate neurotoxic potency of chemical compounds capable to produce axonopaties and delayed neuropaties, to affect neurotransmission through GABAA receptors, voltage dependent sodium channels or ionotropic glutamate receptors, or to produce neuronal and glial neurotoxicity. All this methods supplied useful information to a future method validation (now available in ecvam-dbalm.jrc.cec.eu.int). Methylmercury is an environmental contaminant with special toxicity to Central Nervous System (SNC) and in particular to cerebellar granule cells. A proteomic approach revealed that long-term MeHg exposure to primary cultures of cerebellar granule cells induced a subexpression of succinilCoA:3-ketoacidCoA transferase I (SCOT), enzyme implicated in the ketone body catabolism, and an overexpression of non-phosphorylated cofilin, an actin binding protein involved in the regulation of actin dynamics. On the other hand, long-term MeHg exposure to primary cultures of cerebellar granule neurons produced time- and concentration-dependent apoptotic cell death. This cell death was not an excitotoxic death and was independent of caspasse 3 activation but was partially dependent of lysosomal cathepsin D. Moreover, MeHg exposure produced an increased in lipid peroxidation. In this experimental model, neuronal cell death was protected by antioxidants of wide spectrum, suggesting that this apoptotic cell death could be due to the increased of intracellular reactive oxygen species (ROS)
Severini e Denis
No full textL'A. prende in esame i controversi rapporti tra i due artisti, nel primo decennio del secolo e, più tardi, nella produzione di carattere religioso. Severini risulta influenzato da Denis più di quanto sostenga negli scritti teorici. The Author examines the controversial relationships between the two artists, in the first decade of the century and later on, in their religious production. Severini appears influenced by Denis more than he declares in his theoretic writings
La lingua di Shakespeare e l'ingiuria del tempo: tradurre Troilo e Cressida
No full textIl saggio prende in esame la nuova traduzione italiana di Troilo e Cressida (W. Shakespeare) per Feltrinelli, pubblicata dall'autrice stessa, evidenziando le criticità che nascono nella resa contemporanea di un testo 'early modern', adottando una prospettiva di indagine storico-linguistica, e riflettendo su punti di contatto e divergenza tra traduzione per 'la pagina' e per 'la scena'.The essay deals retrospectively with the production of a new translation of Shakespeare's Troilus and Cressida into contemporary Italian (published by the author with Feltrinelli in 2015). Literary translation problems and open questions about the differences between translation 'for the page' and 'for the stage' are explored within a historical-linguistic perspective
Archiviare il contemporaneo. Lo Spazio di Via Lazzaro Palazzi come paradigma
No full textThe archive is an inclusive and never static memory device. Thus, it is necessary to take care of it, carefully considering the specificity of collectibles, reviewing and updating continuously the criteria and methods of selection, cataloging and conservation. Only through this assumption of responsibility, which also involves raising awareness of public attention, the archive
redefines itself in the present, and in anticipation of the future, as a
place of (mnestic, political, social, cultural) possibility. This article presents how the project of the enhancement of the Archive of the artist-run space Lo Spazio di Via Lazzaro Palazzi (Milan, 1989-1992) at the Museo del Novecento di Milano was created collectively -- as a collaboration between the artists, the museum and the scientific coordinators of the project (among which the author) -- with this awareness. The wish is that the constitution, donation
and enhancement of this specific Archive will represent a
paradigm for the preservation, accessibility and (public) knowledge of contemporary artist archives
Evaluación y desarrollo de modelos "in vitro" para la predicción de neurotoxicidad. Aproximación proteómica a la neurotoxicidad inducida por metilmercurio
No full text[spa] En los últimos años ha habido un creciente interés en la utilización de métodos "in vitro" para la detección del potencial tóxico de compuestos químicos que contribuyan en remplazar, reducir y reformar el uso de animales en experimentación. Distintas organizaciones nacionales e internacionales están trabajando en el desarrollo y la validación de métodos "in vitro" que proporcionen el mismo nivel de información que los modelos in vivo. Se estima que entre el 3-28 % de los compuestos químicos existentes son potencialmente neurotóxicos. Respondiendo a la necesidad de impulsar la utilización de métodos "in vitro" en el campo de la neurotoxicología, el Centro Europeo para la Validación de Métodos Alternativos (ECVAM) propuso la elaboración de una base de datos de métodos alternativos para la detección de compuestos químicos potencialmente neurotóxicos. Los objetivos planteados en este trabajo contemplan estudios bibliométricos y experimentales para (1) la creación de una bases de datos de métodos "in vitro" para la detección de compuestos químicos potencialmente neurotóxicos, (2) para la caracterización de proteínas y la identificación de marcadores de toxicidad mediante herramientas proteómicas utilizando como modelo celular cultivos primarios de células granulares de cerebelo de ratón y como agente tóxico el metilmercurio y (3) la evaluación de los mecanismos de muerte y neuroprotección de células granulares de cerebelo expuestos a metilmercurio. Tras un estudio bibliométrico, se propusieron 6 métodos in vitro para evaluar el potencial tóxico de compuestos químicos capaces de producir axonopatías y neuropatías retardadas, de alterar la transmisión nerviosa a través de los receptores GABAA, de los canales de sodio dependientes de voltaje y de los receptores ionotrópicos de glutamato, y de la utilización de los cultivos reagreagados de cerebro como modelo celular para la evaluación de neurotoxicidad en general. Estos métodos proporcionan información útil para una futura validación de los mismos (consultable en ecvam-dbalm.jrc.cec.eu.int). El metilmercurio (MeHg) es un contaminante ambiental con toxicidad selectiva para el SNC y en particular para las células granulares de cerebelo. El análisis proteómico de extractos proteicos procedentes de cultivos primarios de células granulares de cerebelo de ratón expuestos de forma prolongada a concentraciones subcitotóxicas de metilmercurio permitió identificar dos proteínas, la succinil CoA:3-cetoácido-CoA-transferasa I y la isoforma no muscular de la cofilina, cuya expresión disminuyó e incrementó en presencia de metilmercurio, respectivamente. La exposición prolongada de los cultivos primarios de células granulares de cerebelo a MeHg produce una muerte neuronal apoptótica tiempo y concentración dependiente que cursa por mecanismos no excitotóxicos, independientes de la activación de caspasa 3 y parcialmente dependientes de la liberación de la proteasa lisosomal catepsina D. Además la exposición a MeHg produjo un incremento de la peroxidación lipídica. En nuestro modelo experimental la muerte neuronal fue protegida por antioxidantes de amplio espectro hecho que sugiere que la muerte podría deberse al incremento de ROS intracelular.[eng] "Evaluation and development of alternative methods for prediction of neurotoxicity. Proteomic approach to methylmercury induced neurotoxicity": In the last years there has been a growing interest in using "in vitro" methods to detect toxic potentially chemical compounds, contributing in replacement, reduction and refinement animal use in life science research. Several organizations are working together to develop and validate alternative methods. Responding to the necessity to promote alternative methods in the neurotoxicity field, European Centre for the Validation of Alternative Methods (ECVAM) proposed the elaboration of an alternative methods database to detect chemical compounds potentially neurotoxic. The goals of this thesis include both bibliographic and experimental studies to (1) create a database for "in vitro" methods to detect neurotoxic chemical compounds, (2) to identify toxic biomarkers by using proteomics techniques in primary cultures of mouse cerebellar granule cells exposed to methylmercury (MeHg) and (3) to evaluate cell death and neuroprotection mechanisms involved in long-term MeHg toxicity in primary cultures of mouse cerebellar granule cells. As a result of the bibliographic study, 6 "in vitro" methods were proposed to evaluate neurotoxic potency of chemical compounds capable to produce axonopaties and delayed neuropaties, to affect neurotransmission through GABAA receptors, voltage dependent sodium channels or ionotropic glutamate receptors, or to produce neuronal and glial neurotoxicity. All this methods supplied useful information to a future method validation (now available in ecvam-dbalm.jrc.cec.eu.int). Methylmercury is an environmental contaminant with special toxicity to Central Nervous System (SNC) and in particular to cerebellar granule cells. A proteomic approach revealed that long-term MeHg exposure to primary cultures of cerebellar granule cells induced a subexpression of succinilCoA:3-ketoacidCoA transferase I (SCOT), enzyme implicated in the ketone body catabolism, and an overexpression of non-phosphorylated cofilin, an actin binding protein involved in the regulation of actin dynamics. On the other hand, long-term MeHg exposure to primary cultures of cerebellar granule neurons produced time- and concentration-dependent apoptotic cell death. This cell death was not an excitotoxic death and was independent of caspasse 3 activation but was partially dependent of lysosomal cathepsin D. Moreover, MeHg exposure produced an increased in lipid peroxidation. In this experimental model, neuronal cell death was protected by antioxidants of wide spectrum, suggesting that this apoptotic cell death could be due to the increased of intracellular reactive oxygen species (ROS)
Cyclin F - EXO1 axis controls cell cycle dependent execution of double strand break repair
No full textUbiquitination is a crucial posttranslational modification required for the proper repair of DNA double-strand breaks (DSBs) induced by ionizing radiation (IR). DSBs are mainly repaired through homologous recombination (HR) when template DNA is present and nonhomologous end joining (NHEJ) in its absence. In addition, microhomology-mediated end joining (MMEJ) and single-strand annealing (SSA) provide backup DSBs repair pathways. However, the mechanisms controlling their use remain poorly understood. By using a high-resolution CRISPR screen of the ubiquitin system after IR, we systematically uncover genes required for cell survival and elucidate a critical role of the E3 ubiquitin ligase SCF cyclin F in cell cycle-dependent DSB repair. We show that SCF cyclin F-mediated EXO1 degradation prevents DNA end resection in mitosis, allowing MMEJ to take place. Moreover, we identify a conserved cyclin F recognition motif, distinct from the one used by other cyclins, with broad implications in cyclin specificity for cell cycle control. </p
Towards comfortable communication in future vehicles
No full textThis research aims to study the effect of seat and/or backrest rotation on comfort and quality of conversation. Different sitting arrangements were tested to study the effect of the seat layout on: 1) (dis)comfort experience; 2) conversation quality and 3) postures. Two seats were arranged in different angles (0° 45° 90° and 180°) at the same distance (1 m) and participants were asked to talk to each other. The participants’ postures were acquired by using cameras and markers on the participants’ body. Questionnaires were used to rate the perceived (dis)comfort and quality of conversation. Results show that 90° configuration scored the best both in overall comfort and quality of conversation; while the 0° configuration scored the lowest in both ratings. A strong correlation was established between high comfort and good quality of conversation.Accepted author manuscriptApplied Ergonomics and DesignMechatronic Desig
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