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Search Results: 1 - 10 of 706 matches for " Antonieta Taddei "
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4,6-Diamino-5-[4-(dimethylamino)benzylidene]pyrimidin-2(5H)- one
Gricela Lobo,Jaime Charris,Margaret Valderrama,Antonieta Taddei
Molbank , 2009, DOI: 10.3390/m615
Abstract: A new compound, 4,6-diamino-5-[4-(dimethylamino)benzylidene]pyrimidin-2(5H)-one, was synthesized and its IR, 1H NMR and 13C NMR and MS spectroscopic data are presented.
Gricela Lobo,Jaime Charris,Katiuska Charris,Jesús Romero,Antonieta Taddei
Molbank , 2010, DOI: 10.3390/M693
Abstract: A new compound, 4,6-diamino-5-(3,4-dichlorobenzylidene)pyrimidin-2(5H)-one, was synthesized and its IR, 1H NMR,13C NMR, MS spectroscopic data and elemental analysis are presented.
Gricela Lobo,Jaime Charris,Margaret Valderrama,Jesús Romero,Cristina Castelli,Antonieta Taddei
Molbank , 2010, DOI: 10.3390/M653
Abstract: A new compound, 4,6-diamino-5-(methylbenzylidene)pyrimidin-2(5 H)-one, was synthesized and its IR, 1H NMR, 13C NMR and MS spectroscopic data are presented.
Soil and Leaf Micronutrient Composition in Contrasting Habitats in Podzolized Sands of the Amazon Region  [PDF]
María Antonieta Sobrado
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.410235

Plant macronutrient distribution in podzolized sands of the Amazon caatinga has received attention in several studies; however, the distribution of micronutrients has not been assessed. Soil micronutrient availability has been hypothesized to reflect contrasting habitat characteristics as well as fundamental differences in substrate, and leaf micronutrient composition may reflect the macronutrient content needed to maintain balance for leaf cell functions. In this study, soil and leaf samples were obtained in a toposequence (valley, slope, and mound). Available soil micro- and macronutrients as well as total leaf content were measured by inductively coupled plasma-atomic emission spectrometer and mass spectroscopy. Soil Zn (<1.41 mg·kg-1) and B (<0.31 mg·kg-1) as well as Cu (<1.33 mg·kg-1) levels were very low. Soil Mn was low in the valleys and slopes (0.62-0.87 mg·kg-1), but higher in the mound (6.59 mg·kg-1). Soil Fe (11.48-21.13 mg·kg-1) was well above the critical level in all of

Educational models and concept of childhood in the Gaza Strip Educare a Gaza
Arianna Taddei
Ricerche di Pedagogia e Didattica , 2010,
Abstract: In 2008, R.E.C. (Remedial Education Centre, Gaza, Palestine) was carrying out the project “Promotion of the democratic process and active participation among young population in the Gaza Strip”, approved by the Europe Initiative for democracy and Human Rights, and financed by the European Union. The project included a research activity, “Educational models and concept of childhood in the Gaza Strip”. The research is an idea coming from the long-term collaboration, started in 2002, between EducAid (Italian Ngo, Rimini, Italy) and R.E.C. in the educational work with the vulnerable children in the Gaza Strip.Teachers, educators and parents play a fundamental role in the education of children and adolescents; therefore families, associations and schools should be places where children become aware of their rights as human beings, in order to become, one day, active citizens of a society that themselves can improve. It’s of fundamental importance the policy that institutions carry out (supporting families, schools and associations), because it guarantees a functional education system. We interfaced with the different faces of formal and informal education, and it was impossible not to have the sensation of being inside a big prison, not too big, if we think its size compared to one and a half million inhabitants, between a closed tall and gray wall, a sea hardly accessible due to embargo, and Erez, the check point of transit for Israel. No gas, no fuel, no electricity, yet children continue to go to school, the roads are crowded by pedestrians who are waiting for a taxi for hours under the sun, wondering if they can go to work. The potential of education and schooling represent non-violent weapons to defend peace, promote change, make children aware of their rights, begin to live their citizenship at school, at home, in the associations. Through the testimonies we realized how much these valuable potentials are in danger in the Gaza Strip, as indeed in many other places in the world where people are slaves to someone or something, and lose confidence, tighten up their minds, are afraid to change, to fight for transforming what the political, social, local and international system make difficult and overwhelming. In 2008, R.E.C. (Remedial Education Centre, Gaza, Palestine) was carrying out the project “Promotion of the democratic process and active participation among young population in the Gaza Strip”, approved by the Europe Initiative for democracy and Human Rights, and financed by the European Union. The project included a research activity, “Educational m
Notes on the semiotic phenomenology of social discrimination Notes on the semiotic phenomenology of social discrimination
Renzo Taddei
Galáxia , 2009,
Abstract: The goal of this paper is to explore the application of some elements of Charles S. Peirce's semiotic phenomenology to the study of social discrimination. Using E. Valentine Daniel's ideas about the "limits of culture" as a point of departure to understand the process of semeiosis, this article argues that situations of social discrimination are a special case of the phenomenon where the process through which percepts are transformed into (new) concepts is incomplete. The distinctive element here is the fact that the process of social stigmatization is only effective if capable of semiotically manipulating signs associated to group identities. This manipulation reduces the semiotic complexity of the signs associated with whoever is stigmatized. Susan Gal's three processes of semiotic manipulation, namely iconization, recursiveness, and erasure, and Harold Garfinkel's work on degradation ceremonies will be brought into analysis as relevant cases. Notas sobre a fenomenologia semiótica da discrimina o social — O objetivo deste artigo é explorar a aplica o de alguns elementos da fenomenologia semiótica de Charles S. Peirce no estudo da discrimina o social. Usando as ideias de E. Valentine Daniel a respeito dos "limites da cultura" como ponto de partida, com o intuito de compreender o processo de semeiosis, este artigo argumenta que situa es de discrimina o social s o um caso especial do fen meno em que o processo por meio do qual percep es transformam-se em (novos) conceitos se dá de modo incompleto. O elemento que faz deste um caso especial é o fato de que o processo de estigmatiza o social só é efetivo se for capaz de manipular semioticamente signos associados a identidades grupais. Essa manipula o reduz a complexidade semiótica dos signos associados com quem é estigmatizado. Os três processos de manipula o semiótica propostos por Susan Gal — iconiza o, recursividade, e apagamento (erasure) —, e o trabalho sobre cerim nias de degrada o de Harold Garfinkel, ser o discutidos como casos relevantes.
Il Braille: aspetti percettivi, linguistici e neurologici della lettura attraverso il tatto
Chiara Taddei
Studi Linguistici e Filologici Online , 2004,
Abstract: Braille is a writing and reading system used by blind people, which involves the replacement of visual perception of printed characters by tactile interpretation of raised dots. Reading by touch implies the processing of information derived both by movements elicitated by haptic inspection of the stimuli and by propioceptive sources. In this paper, the integration between these perceptive processes and the linguistic ones typical of reading is discussed, with refer to congenitally and late blind people. On one side, particular attention is given to the role of the typology of scanning movements and to the tasks undertaken by the hands (examination of spatial ad linguistic information), on the other to the lexical-semantic processing involved in the decoding phase and to the possible role of previous experiences associated with visual reading. Finally, some data of recent studies examining the relation between Braille reading and neural plasticity are briefly described with particular attention to the involvement and function of the visual cortex in reading by touch.
Imitazione, ripetizione e linguaggio formulario nell'acquisizione linguistica. Il caso dei bambini non vedenti
Chiara Taddei
Studi Linguistici e Filologici Online , 2004,
Abstract: Studies on blind children s language acquisition emphazise their frequent and extended use of IRR-speech (Imitation, Repetion, Routine), allowing the hypothesis according to which blind children are gestaltic-style language learners. The specific style used by blind children is presumably due to their impossibility to access to extra-linguistic elements (smile, eye-contact, etc.), which characterise pre-verbal communication and constitute the basis for a correct development of dialogic competence. The analysis of blind children s linguistic development allows to point out general considerations about the process of language acquisition tout court and to make some hypothesis concerning what kind of elements could lead to an analytic style of language acquisition or to a gestaltic one.
Muita guerra e alguma paz: análise de um episódio de Cidade dos homens
Angela Taddei
Ciberlegenda , 2009,
La anticoncepción de emergencia en América Latina y el Caribe
Revista Panamericana de Salud Pública , 2004, DOI: 10.1590/S1020-49892004001200012
Abstract: introducing the post-coital birth control method in the family-planning services of latin american countries has not been an easy task. catholic and other conservative groups with great influence in the political arena have time and again stopped it from being adopted as an alternative method and have even succeeded in having it removed from official directives after formal acceptance by health authorities. the main objections are triggered by the erroneous supposition that "emergency contraception" pills are abortifacients. however, a large dose of cultural discrimination against women seems also to be involved. it has been extremely difficult to register dedicated products and make them available in drugstores and even more difficult to distribute them without charge at public health centers. they are hard to find, expensive, and unavailable to adolescents at risk for unwanted pregnancies and to most low-income women, especially in rural areas. dissemination of appropriate information has been scarce and slow and there are still great numbers of people that do not understand how or why the method works. brazil has been the only exception, as its open society has readily accepted this method of contraception. the latin american consortium on emergency contraception founded in the year 2000 and its regional conference two years later had an important impact on the situation, as they encouraged the coordination of efforts by governmental and nongovernmental entities with those of women's groups to fight for sexual and reproductive rights. a number of studies have shown that the more people learn about emergency contraception, the more they find it acceptable and necessary, and radio spots and other media techniques have begun to educate the public about this matter. in spite of the many difficulties encountered, in the last few years several countries have made strides to include this method in their public health guidelines. however, because of the powerful forces a
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