H2 O2: Hélio por Hélio; Oiticica pós Oiticica

Exportado OPUSMade available in DSpace on 2019-08-14T08:23:16Z (GMT). No. of bitstreams: 1 daniel_fi...pdf: 3885850 bytes, checksum: ddc9f953107c198c0c595965de116330 (MD5) Previous issue date: 29Essa dissertação realiza um estudo acerca das atuais exibições e condições de leitura dos trabalhos de Hélio Oiticica. A questão é discutir como ocorre a exposição dessas obras e qual o contraponto desses projetos em relação aos depoimentos do autor. Iremos, com isso, abordar, a partir de um determinado recorte de sua obra, uma questão mais ampla, que se extende nas relações entre as neovanguardas dos anos sessenta e sua atual recepção e encenação pelas instituições artísticas de hoje: Hélio por Hélio; Hélio pós Hélio. Foram eleitospor objeto de estudo alguns textos produzidos pelo artista e textos curatoriais de vários críticos relativos às exposições póstumas de Hélio Oiticica. A abordagem propõe um estudo sobre os textos de Hélio Oiticica por Hélio Oiticica e de Hélio Oiticica redefinido por estratégias curatoriais contemporâneas. Num primeiro momento são analisados os textos que Oiticica escreveu sobre os Parangolés, presentes nos livros, catálogos e em manutenção pelo Programa Hélio Oiticica.Num segundo momento, é discutido o Hélio pós Hélio, ou seja, os textos produzidos por críticos e curadores relativos às remontagens dos trabalhos de Hélio em exposições póstumas.This dissertation carries through a study concerning the current exhibitions and conditions of reading of works Hélio Oiticica. The question is to argue as the exposition of these workmanships occurs and which the counterpoint of these projects in relation to the depositions of the author. We will go, with this, to approach, from one definitive clipping of its workmanship, a ampler question, that if extend in the relations between neoavanguardes of the Sixties and its current reception and stage for the artistic institutions of today: Helio for Helio; Helio after Helio. Some texts produced for the artist and curator texts of some relative critics to expositions had been electing for study object the posthumous Hélio Oiticica. The boarding considers a study on and texts Hélio Oiticica for Hélio Oiticica and Hélio Oiticica redefined for contemporaries curator actions. At a first moment the texts are analyzed that Oiticica wrote on the Parangolés, gifts in books, catalogues and in maintenance for the Program Hélio Oiticica. At as a moment, the Helio after Helio, or either, the texts produced for critics and relative custodians to the re-assemblies of the Helio works are argued in posthumous expositions

Skin hydration as a tool to control the distribution and molecular effects of intermediate polarity compounds in intact stratum corneum

The barrier function of the skin is mainly assured by its outermost layer, stratum corneum (SC), which consists of dead keratin-filled cells embedded in a lipid matrix. The skin is daily exposed to an environment with changing conditions in terms of hydration and different chemicals. Here we investigate how a molecule that has reasonable solubility in both hydrophobic and hydrophilic environments can be directed to certain regions in SC by changing the skin hydration. We use 1,2,3-trimethoxy propane (TMP) as a model substance and solid-state NMR on natural abundance 13C to obtain atomically resolved information on the molecular dynamics of TMP as well as SC lipid and protein components at varying hydration conditions. Upon dehydration, TMP redistributes from the hydrophilic corneocytes to the hydrophobic SC lipid regions. In this way, TMP can act to prevent the fluid–solid lipid transition in drying conditions and be present in the corneocytes in more humid conditions. Hydration can thereby be used as a switch to control the location and action of TMP or similar compounds in complex materials like SC. The general principles described here can also have impact on other applications including lipid-based formulations in food, drug delivery and cosmetics

Development, Validation, and Use of 1H-NMR Spectroscopy for Evaluating the Quality of Acerola-Based Food Supplements and Quantifying Ascorbic Acid

International audienceAcerola (Malpighia emarginata D.C.) is an exotic fruit with high agro-industrial potential due to its high content of ascorbic acid (AA), phenolic compounds, and carotenoid pigments. Acerola fruit is processed into concentrated juice or powder to be incorporated into food supplements. The ascorbic acid content of concentrated juice or powders must be controlled and well assessed. Therefore, the development of optimal methods and procedures for the rapid and accurate determination of the ascorbic acid content in juice concentrate and juice powder remains of considerable commercial interest. NMR spectroscopy is currently a powerful spectroscopic tool for the qualitative and quantitative analysis of molecules of all types and sizes. Firstly, this article presents the NMR-based metabolomic profiling of acerola juice and concentrate powder to describe and compare their composition. Thirty-six metabolites were identified. The AA over choline ratio and the NMR metabolomic profiles could be used for authentication in the future. Secondly, a rapid (8 min), reliable, and non-destructive method for the quantification of ascorbic acid by 1D 1H-NMR spectroscopy was developed and validated. The LOD and LOQ were 0.05 and 0.15 mg/mL, respectively. These two approaches could be combined to better characterize ingredients derived from acerola and incorporated into food supplements

Ethical, stigma, and policy implications of food addiction: A scoping review

The concept of food addiction has generated much controversy. In comparison to research examining the construct of food addiction and its validity, relatively little research has examined the broader implications of food addiction. The purpose of the current scoping review was to examine the potential ethical, stigma, and health policy implications of food addiction. Major themes were identified in the literature, and extensive overlap was identified between several of the themes. Ethics sub-themes related primarily to individual responsibility and included: (i) personal control, will power, and choice; and (ii) blame and weight bias. Stigma sub-themes included: (i) the impact on self-stigma and stigma from others, (ii) the differential impact of substance use disorder versus behavioral addiction on stigma, and (iii) the additive stigma of addiction plus obesity and/or eating disorder. Policy implications were broadly derived from comparisons to the tobacco industry and focused on addictive foods as opposed to food addiction. This scoping review underscored the need for increased awareness of food addiction and the role of the food industry, empirical research to identify specific hyperpalatable food substances, and policy interventions that are not simply extrapolated from tobacco

In vitro grown pollen tubes of Nicotiana alata actively synthesise a fucosylated xyloglucan.

Nicotiana alata pollen tubes are a widely used model for studies of polarized tip growth and cell wall synthesis in plants. To better understand these processes, RNA-Seq and de novo assembly methods were used to produce a transcriptome of N. alata pollen grains. Notable in the reconstructed transcriptome were sequences encoding proteins that are involved in the synthesis and remodelling of xyloglucan, a cell wall polysaccharide previously not thought to be deposited in Nicotiana pollen tube walls. Expression of several xyloglucan-related genes in actively growing pollen tubes was confirmed and xyloglucan epitopes were detected in the wall with carbohydrate-specific antibodies: the major xyloglucan oligosaccharides found in N. alata pollen grains and tubes were fucosylated, an unusual structure for the Solanaceae, the family to which Nicotiana belongs. Finally, carbohydrate linkages consistent with xyloglucan were identified chemically in the walls of N. alata pollen grains and pollen tubes grown in culture. The presence of a fucosylated xyloglucan in Nicotiana pollen tube walls was thus confirmed. The consequences of this discovery to models of pollen tube growth dynamics and more generally to polarised tip-growing cells in plants are discussed

Littératures francophones : oralité et mondialités

International audienceCorrelée aux ondulations de la mondialité, suffisamment continue et étendue pour que l’innombrable des voix puisse s’y entendre de manière éployée et simultanée, la langue nous dessine, nous définit, nous attache à un monde. Elle fertilise la pluralité esthétique, reflète ou diffracte la transmission de l’histoire, du passé et de la culture. Elle renouvelle les vocables, les sonorités et la prose et ouvre vers les mondes. Comment, dès lors, repenser l’oralité à l’aune de la mondialité ? Les littératures francophones offrent les réponses créatrices à cette question, selon leurs espaces propres, leurs exercices textuels, les rapports spécifiques de l’oral et de l’écrit qu’elles exposent. Ces réponses sont ouvertes : elles vont par des dichotomies, par des alliances langagières et culturelles diverses et paradoxales ; elles font revenir à l’actualité du jeu de la mondialité, de l’oralité et de l’écrit.Les essais ici réunis sont issus d’un colloque tenu à l’Université des Antilles, en Guadeloupe, en février 2019

Littératures francophones : oralité et mondialités

International audienceCorrelée aux ondulations de la mondialité, suffisamment continue et étendue pour que l’innombrable des voix puisse s’y entendre de manière éployée et simultanée, la langue nous dessine, nous définit, nous attache à un monde. Elle fertilise la pluralité esthétique, reflète ou diffracte la transmission de l’histoire, du passé et de la culture. Elle renouvelle les vocables, les sonorités et la prose et ouvre vers les mondes. Comment, dès lors, repenser l’oralité à l’aune de la mondialité ? Les littératures francophones offrent les réponses créatrices à cette question, selon leurs espaces propres, leurs exercices textuels, les rapports spécifiques de l’oral et de l’écrit qu’elles exposent. Ces réponses sont ouvertes : elles vont par des dichotomies, par des alliances langagières et culturelles diverses et paradoxales ; elles font revenir à l’actualité du jeu de la mondialité, de l’oralité et de l’écrit.Les essais ici réunis sont issus d’un colloque tenu à l’Université des Antilles, en Guadeloupe, en février 2019

Description des modalités pratiques de prescription d’un facteur de croissance de la lignée granulocytaire (G-CSF) chez les patientes recevant une chimiothérapie pour un cancer du sein : étude Opaline

International audienc