As simetrias na tecelagem (parte I)

Neste artigo, convido o leitor a transformar-se num detetive �� ca��a de simetrias! E desta vez o objeto da nossa aten����o s��o as bonitas pe��as de tecelagem. Os tecidos obt��m-se atrav��s do entrela��amento de fios longitudinais (fios de teia) com fios transversais (fios de trama), o que s�� por si j�� tem interesse do ponto de vista matem��tico. (...) Joana Dias �� natural da Ilha de S��o Miguel e vive atualmente em Santa Maria. O seu trabalho artesanal em tecelagem, malhas e fia����o de l�� pode ser apreciado na Web. (...) Joana acrescenta: "Como designer tenho um fasc��nio pelo padr��o, pela repeti����o de um motivo, pela desconstru����o e pela sensa����o de desenhar e preencher um espa��o sem limites, sem princ��pio nem fim. A repeti����o �� infinita embora vejamos apenas uma parte. A arte da tecelagem representa este momento m��gico de constru����o do padr��o dentro dos limites do tear." Refor��o o facto de este aspeto referido pela Joana ser de extrema import��ncia para a compreens��o intuitiva do conceito de simetria. Aqui est�� um exemplo claro de como �� importante estabelecer pontes entre a Escola e a Sociedade, com enfoque nas nossas tradi����es. E por que n��o trazer �� Escola artes��os a��orianos para dar um testemunho das diferentes formas de artesanato t��o caracter��sticas da nossa regi��o? Muitos alunos certamente adorariam fazer as suas pr��prias pe��as orientados por quem sabe, para n��o falar no potencial deste tipo de atividades para a promo����o de aprendizagens significativas. (...)

Sequencing of a 17.6 kb segment on the right arm of yeast chromosome VII reveals 12 ORFs, including CCT, ADE3 and TR-I genes, homologues of the yeast PMT and EF1G genes, of the human and bacterial electron-transferring flavoproteins (beta-chain) and of the Escherichia coli phosphoserine phosphohydrolase, and five new ORFs.

A 17.6 kb DNA fragment from the right arm of chromosome VII of Saccharomyces cerevisiae has been sequenced and analysed. The sequence contains twelve open reading frames (ORFs) longer than 100 amino acids. Three genes had already been cloned and sequenced: CCT, ADE3 and TR-I. Two ORFs are similar to other yeast genes: G7722 with the YAL023 (PMT2) and PMT1 genes, encoding two integral membrane proteins, and G7727 with the first half of the genes encoding elongation factors 1gamma, TEF3 and TEF4. Two other ORFs, G7742 and G7744, are most probably yeast orthologues of the human and Paracoccus denitrificans electron-transferring flavoproteins (beta chain) and of the Escherichia coli phosphoserine phosphohydrolase. The five remaining identified ORFs do not show detectable homology with other protein sequences deposited in data banks. The sequence has been deposited in the EMBL data library under Accession Number Z49133.

I encontro de imigrantes no desporto a��oriano

Na qualidade de Diretora Regional das Comunidades, fomos respons��vel pela reda����o dos artigos e coordena����o da p��gina "Comunidades A��orianas no Mundo", integrada no jornal Mundo Portugu��s, servindo a mesma para a divulga����o das atividades realizadas pela Dire����o Regional Das Comunidades do Governo dos A��ores.

I Edi����o campo de f��rias intercultural

Na qualidade de Diretora Regional das Comunidades, fomos respons��vel pela reda����o dos artigos e coordena����o da p��gina "Comunidades", integrada no jornal A��oriano Oriental, servindo a mesma para a divulga����o das atividades realizadas pela Dire����o Regional Das Comunidades do Governo dos A��ores.

Os bordados de palha de trigo sobre tule da Dona Isaura Rodrigues (parte I)

O Arquip��lago dos A��ores �� rico em formas diversificadas e criativas de artesanato. Em artigos publicados no Tribuna das Ilhas ao longo dos ��ltimos anos, analis��mos as simetrias das rendas tradicionais do Faial e do Pico e de pe��as feitas noutros suportes como, por exemplo, as obtidas do recorte de papel ou do recorte de madeira. Neste contexto, seria uma falha n��o explorar as simetrias dos bordados tradicionais dos A��ores. (...) Na Portaria n.�� 89/98, de 3 de dezembro, foram contemplados os bordados tradicionais do Faial, da Terceira e de S. Miguel, sendo que cada um apresenta caracter��sticas muito pr��prias. No Faial, destacam-se os bordados de palha de trigo sobre tule. (...) Sent��mo-nos �� conversa com a Dona Isaura Rodrigues, artes�� de reconhecido m��rito na arte de bordar palha de trigo sobre tule. Come����mos por falar nas diferentes fases de execu����o de uma pe��a. Em primeiro lugar, deve-se escolher o desenho que tem de se adaptar �� estrutura do tule. Em seguida, passa-se o desenho para papel vegetal, que �� anexado a uma folha de papel de ferro para ficar mais f��cil de trabalhar. Por fim, coloca-se o tule sobreposto ao papel vegetal, que deve ser alinhado e mantido fixo (...) A mat��ria-prima necess��ria exige tamb��m algum cuidado. Por exemplo, a palha de trigo deve ser cortada com uma rachadeira artesanal, que est�� preparada para dividir a palha em 5 ou 6 hastes (...)

Fra����es (parte I)

A tem��tica das fra����es �� provavelmente o assunto mais delicado no que diz respeito ao ensino da matem��tica inicial. Por terem m��ltiplas aplica����es, contextos e sentidos, as fra����es pedem um ensino altamente especializado e esmerado. H�� que modelar de forma cuidadosa o conceito de fra����o, fasear e ordenar os n��s conceptuais ao longo dos anos e dosear o car��ter abstrato/concreto dos exemplos e atividades. Muito se testou, teorizou e escreveu sobre esta tem��tica. Este trabalho consiste num resumo alargado sobre o ensino das fra����es, documentado em literatura especializada e ilustrado atrav��s de exemplos concretos retirados de manuais do Singapore Math, um dos mais cotados m��todos de ensino do mundo.

O Balanced Scorecard como instrumento de gest��o estrat��gica: sua aplicabilidade no Instituto de Gest��o Financeira da Seguran��a Social, I.P.

Mestrado em Contabilidade e Gest��o das Institui����es Financeiras

Atas do VI Encontro do CIED ��� I Encontro Internacional em estudos educacionais. avalia����o: desafios e riscos

Esta publica����o cont��m as comunica����es apresentadas no VI Encontro do CIED ��� I Encontro Internacional em Estudos Educacionais. Avalia����o: Desafios e Riscos, nos dias 15 e 16 de novembro de 2013, na Escola Superior de Educa����o de Lisboa, Instituto Polit��cnico de Lisboa, organizado pelo CIED, com o apoio da Escola Superior de Educa����o de Lisboa.

Voltammetric oxidation of drugs of abuse I. Morphine and metabolites

A detailed study of the electrochemical oxidative behavior of morphine in aqueous solution is reported. Through the synthesis of several metabolites and derivatives, pseudomorphine, morphine N-oxide, normorphine, dihydromorphine and 2-(N,N-dimethylaminomethyl)morphine, and their voltammetric study it was possible to identify the oxidation peaks for morphine. The anodic waves are related with the oxidation of phenolic and tertiary amine groups. It is also possible to verify that a poorly defined peak observable during morphine oxidation is not a consequence of further oxidation of pseudomorphine but due to formation of a dimer during phenolic group oxidation. The results obtained and especially those regarding the formation of a new polymer based on a C O coupling could be useful for clarifying the discoloration phenomenon occurring during storage of morphine solutions as well as leading to a better understanding of its oxidative metabolic pathways.

Soil remediation time to achieve clean-up goals I: influence of soil water content

The current models are not simple enough to allow a quick estimation of the remediation time. This work reports the development of an easy and relatively rapid procedure for the forecasting of the remediation time using vapour extraction. Sandy soils contaminated with cyclohexane and prepared with different water contents were studied. The remediation times estimated through the mathematical fitting of experimental results were compared with those of real soils. The main objectives were: (i) to predict, through a simple mathematical fitting, the remediation time of soils with water contents different from those used in the experiments; (ii) to analyse the influence of soil water content on the: (ii1) remediation time; (ii2) remediation efficiency; and (ii3) distribution of contaminants in the different phases present into the soil matrix after the remediation process. For sandy soils with negligible contents of clay and natural organic matter, artificially contaminated with cyclohexane before vapour extraction, it was concluded that (i) if the soil water content belonged to the range considered in the experiments with the prepared soils, then the remediation time of real soils of similar characteristics could be successfully predicted, with relative differences not higher than 10%, through a simple mathematical fitting of experimental results; (ii) increasing soil water content from 0% to 6% had the following consequences: (ii1) increased remediation time (1.8���4.9 h, respectively); (ii2) decreased remediation efficiency (99���97%, respectively); and (ii3) decreased the amount of contaminant adsorbed onto the soil and in the non-aqueous liquid phase, thus increasing the amount of contaminant in the aqueous and gaseous phases.

Diane Arbus: the wonderful wizard of odds or the poetics of the i (eye)

Diane Arbus��� photographs are mainly about difference. Most of the time she is trying ���[���] to suppress, or at least reduce, moral and sensory queasiness��� (Sontag 1977: 40) in order to represent a world where the subject of the photograph is not merely the ���other��� but also the I. Her technique does not coax her subjects into natural poses. Instead she encourages them to be strange and awkward. By posing for her, the revelation of the self is identified with what is odd. This paper aims at understanding the geography of difference that, at the same time, is also of resistance, since Diane Arbus reveals what was forcefully hidden by bringing it into light in such a way that it is impossible to ignore. Her photographs display a poetic beauty that is not only of the ���I��� but also of the ���eye���. The world that is depicted is one in which we are all the same. She ���atomizes��� reality by separating each element and ���Instead of showing identity between things which are different [���] everybody is shown to look the same.��� (Sontag 1977: 47). Furthermore, this paper analyses some of Arbus��� photographs so as to explain this point of view, by trying to argue that between rejecting and reacting against what is standardized she does not forget the geography of the body which is also a geography of the self. While creating a new imagetic topos, where what is trivial becomes divine, she also presents the frailty of others as our own.

Jornalismo pol��tico e censura na I Guerra ��� uma vis��o comparativa entre os jornais O Mundo e A Lucta

���Se os governantes soubessem a curiosidade que desperta a censura, se pudessem ler as perguntas feitas aos jornais censurados, se avaliassem bem os efeitos da cria����o deste novo fruto proibido, mandariam para as profundezas do inferno a lei da censura preventiva���, escrevia Jo��o Barbosa, a 1 de Maio de 1917, no di��rio A Lucta. A materializa����o da censura nas p��ginas dos jornais di��rios, por via de intrusivos espa��os em branco, de configura����o vari��vel, n��o deixou de constituir uma nova forma de enunciar o ���problema��� pol��tico. Na nossa an��lise sobre a censura aos jornais A Lucta e o O Mundo, durante a I Guerra Mundial, procuraremos ultrapassar a vis��o excessivamente redutora dos jornais como sendo meros transmissores de mensagens de um emissor para um recetor, aceitando a proposta de M. Schudson:��� que o poder dos m��dia est�� n��o apenas (e nem sequer primariamente) no seu poder de declarar as coisas como sendo verdadeiras mas no poder de fornecer as formas nas quais as declara����es aparecem���. A pr��tica de censura constitui elemento determinante na reconfigura����o do campo pol��tico republicano.

Phenotypic impact of deregulated expression of class I histone deacetylases in urothelial cell carcinoma of the bladder

Deregulated expression of histone deacetylases (HDACs) has been implicated in tumorigenesis. Herein, we investigated class I HDACs expression in bladder urothelial cell carcinoma (BUCC), its prognostic value and biological significance. Significantly increased transcript levels of all HDACs were found in BUCC compared to 20 normal mucosas, and these were higher in lower grade and stage tumors. Increased HDAC3 levels were associated with improved patient survival. SiRNA experiments showed decrease cell viability and motility, and increased apoptosis. We concluded that class I HDACs play an important role in bladder carcinogenesis through deregulation of proliferation, migration and apoptosis, constituting putative therapeutic targets

Identidade do jovem rural confrontando com estere��tipo de Jeca Tatu: um estudo qualitativo com os jovens da EFA Rei Alberto I

Disserta����o de mestrado em Ci��ncias da Educa����o, na Faculdade de Ci��ncias e Tecnologia da Universidade Nova de Lisboa e do Dipl��me d' Universit�� Fran��ois Rabelais de Tours

Towards a Unified Theory of Health-Disease: I. Health as a complex model-object

Theory building is one of the most crucial challenges faced by basic, clinical and population research, which form the scientific foundations of health practices in contemporary societies. The objective of the study is to propose a Unified Theory of Health-Disease as a conceptual tool for modeling health-disease-care in the light of complexity approaches. With this aim, the epistemological basis of theoretical work in the health field and concepts related to complexity theory as concerned to health problems are discussed. Secondly, the concepts of model-object, multi-planes of occurrence, modes of health and disease-illness-sickness complex are introduced and integrated into a unified theoretical framework. Finally, in the light of recent epistemological developments, the concept of Health-Disease-Care Integrals is updated as a complex reference object fit for modeling health-related processes and phenomena.