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Search Results: 1 - 10 of 61580 matches for " Luiz Antonio Garcia; "
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Cibercultura e literatura: hipertexto e as novas arquiteturas textuais
Diniz, Luiz Antonio Garcia;
Alea : Estudos Neolatinos , 2005, DOI: 10.1590/S1517-106X2005000200003
Abstract: the object of this study is to analyse the implications of the new technologies in the perceivable (reader) and technical (author) forms of textual production. cyberculture, the result of the trivialisation of personal computers and of the new relationships created by virtual communities in an environment characterised by interactivity, has imposed a new paradigm. our focus is the relationships established between literature, cyberculture and the cybercity by the newly emerging textual forms. what is the role of the book in cyberspace and in immersive environments? how would temporality be defined in the contemporary text, characterized by a growing fractality? if hypertext is characterised as something opposed to linear text, how may we define hypertext in relation to printed text, a product characterised by the notion of the author and individuality?
Radial variation of basic density and wood cells dimensions of Cariniana legalis (Mart.) O. Kuntze depending on the provenance
Israel Luiz de Lima,Eduardo Luiz Longui,Michelle Fonseca Garcia,Antonio Carlos Scatena Zanatto
CERNE , 2011,
Abstract: Provenance tests can provide information about the silvicultural behavior and wood quality for the exploration of variability and conservation of genetic material for future use. This study aims to investigate the effect of provenances on some wood properties of the Cariniana legalis. Seedlings of three provenances (Porto Ferreira, Piracicaba and Campinas) were planted in Luiz Antonio-SP using randomized block design with six replicates. After 26 years of planting, eighteen trees, six of each provenance, were felled. The properties studied were basic density and the cellular dimensions. The results revealed that the basic density, fiber length, fiber wall thickness, vessel element length, vessel diameter, uniseriate ray height and width were influenced by the provenances. A good positive relationship was found among the fiber length, fiber wall thickness, vessel element length; vessel diameter and multiseriate ray height with radial position and a negative relation between vessel frequency with the radial position.
Alpha-Tomatin against Witches’ Broom Disease  [PDF]
Luiz Humberto Gomes, Keila Maria Roncato Duarte, Felipe Gabriel Andrino, Gildemberg Amorin Leal Jr., Lia Matelli Garcia, Antonio Figueira, Simone Possedente de Lira
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.55074

Several plants use secondary metabolites against insects and pathogens attack. Among such metabolites known glycoalkaloids are the most studied. Plants from Solanaceae Family are the most abundant on those alkaloids. Despite alfa-tomatine is a known glycoalkaloid, its specific action against Moniliophthora perniciosa, fungi responsible for witches broom disease in cocoa plantations was obtained in this work. Alfa-tomatine was infusion-extracted from Solanum lycopersicum leaves, and its action against the fungi growth was shown on the bioassays. In these tests, M. perniciosa growth was totally inhibited but other fungus tested, the inhibition was not totally, or did not present effect on growth, showing in this way, the specificity of alfa-tomatine to M. perniciosa. The advantages of work with a natural molecule for the fungi control is the stability of the molecule, its resistance to high temperature and pressure and for its use, the simple method of extraction used. The confirmation of the alfa-tomatine molecule was done by High Performance Liquid Chromatography and Mass Spectrometry in comparison to the Sigma standard.

Use of Silicon in Mitigating Ammonium Toxicity in Maize Plants  [PDF]
Cid Naudi Silva Campos, Renato de Mello Prado, Cassiano Garcia Roque, Antonio Jo?o de Lima Neto, Luiz Junior Pereira Marques, Aridênia Peixoto Chaves, Claudia Amaral Cruz
American Journal of Plant Sciences (AJPS) , 2015, DOI: 10.4236/ajps.2015.611178
Abstract: Silicon is a beneficial element that can mitigate abiotic stresses, such as ammonium toxicity. The objective herein was to evaluate the effects of silicon (Si) on mitigating toxicity caused by excess ammonium in maize plants grown in nutrient solution. An experiment was conducted with maize plants (cultivar DKB 390 VT Pro II) grown in a greenhouse in pots (8 L) in a hydroponic system. The treatments were arranged in a 2 × 2 factorial, consisting of two ammonium concentrations (30 and 60 mmol·L-1) in the absence and presence of Si (10 mmol·L-1), arranged in a completely randomized design with six repetitions. At 28 days after applying the treatments the dry mass of shoots and roots was evaluated, along with accumulation of silicon and nitrogen in the shoots. The use of silicon resulted in increases in the studied variables, regardless of ammonium concentrations. Silicon reduced the effect of toxicity caused by ammonium excess in maize plants, resulting in greater growth and dry matter accumulation.
Projeto Diagnóstico da Farmácia Hospitalar no Brasil: uma proposta de hierarquiza??o dos servi?os
Messeder, Ana Márcia;Osorio-de-Castro, Claudia Garcia Serpa;Camacho, Luiz Antonio Bastos;
Cadernos de Saúde Pública , 2007, DOI: 10.1590/S0102-311X2007000400011
Abstract: this paper discusses the development of a methodological approach to classify hospital pharmacies according to their performance, measured by structure and process indicators. the method considers the influence exerted on performance by the level of care in the hospital and the interdependence among pharmaceutical activities. algorithms for assessing performance of hospital pharmacies were constructed for each level of care. different weights were used for core activities in the pharmacy and other specific activities, according to the level of care in the hospital where the respective service was provided. this methodology allowed classifying hospital pharmacies from best to worst, based on performance. independently of level of care in the hospital, no hospital pharmacies were classified as high-performance, and more than 50% were classified as low-performance.
Flower morpho-anatomy in Epiphyllum phyllanthus (Cactaceae)
Garcia de Almeida, Odair José;Sartori-Paoli, Adelita Aparecida;Souza, Luiz Antonio de;
Revista mexicana de biodiversidad , 2010,
Abstract: the aim of this contribution was to analyze the morpho-anatomical floral structure of epiphyllum phyllanthus (l.) haw., a widely distributed species across south america, occurring in humid forests as an epiphyte. flowers and flower buds were collected in maringá, paraná state, brazil, fixed, processed, and analyzed under light microscope and scanning electron microscope. the flower is sessile and epigynous with a well-developed hypanthium. all flower whorls have uniseriate epidermis. secretory cavities containing mucilage and calcium oxalate crystals occur throughout the floral parenchymatous tissue. the androecium has many stamens with tetrasporangiate and bithecal anthers. the wall of the young anther is formed by epidermis, endothecium, a middle layer, and binucleate secretory tapetum that eventually becomes uninucleate. the gynoecium is syncarpous with 9-10 carpels, pluriovulate, and with parietal placentation. the ovary has inverted vascular bundles in a similar pattern as in pereskia. the nectariferous region occurs on the inner surface of the hypanthium. the stigma has 9-10 lobes with a secretory epidermis. the ovules are circinotropous, bitegmic, crassinucelate, and have long funiculus as in many other cactaceae.
Valor nutritivo e desempenho de coelhos alimentados com ra es contendo milheto (Pennisetum glaucum (L.) R.Br)
Furlan Antonio Claudio,Scapinello Claudio,Toral Fábio Luiz Buranelo,Faria Haroldo Garcia de
Revista Brasileira de Zootecnia , 2003,
Abstract: Três experimentos foram conduzidos com o objetivo de determinar o valor nutritivo e verificar o desempenho de coelhos em crescimento alimentados com ra es contendo diferentes níveis de milheto. No ensaio de digestibilidade (experimento 1) foram determinados os valores nutritivos dos milhetos dos cultivares Comum, BN2 e Iapar IA 98301. Foram utilizados 40 coelhos machos da ra a Nova Zelandia Branco, com idade média de 45 dias, distribuídos em um delineamento inteiramente casualizado, com 10 repeti es. Em cada tratamento, os milhetos avaliados substituíram 30% de uma ra o referência. Os valores de energia digestível dos milhetos Comum, BN2 e Iapar IA 98301 foram, respectivamente, 3410, 3493 e 3505 kcal/kg de matéria natural. Nos ensaios de desempenho (experimentos 2 e 3) foram avaliadas ra es contendo níveis crescentes de milheto Comum ou Iapar IA 98301 (0, 25, 50, 75 e 100%) em substitui o ao milho. Em cada ensaio foram utilizados 60 coelhos da ra a Nova Zelandia Branco, sendo 30 machos e 30 fêmeas, com 40 dias de idade inicial, distribuídos em um delineamento inteiramente casualizado, com 12 repeti es, sendo a unidade experimental constituída por um animal. N o foram observadas diferen as no desempenho dos coelhos quando o milho foi substituído pelo milheto Comum. Foram observados efeitos quadráticos dos níveis de substitui o do milho por milheto Iapar IA 98301. Menor ganho de peso, pior convers o alimentar e menor peso de carca a foram obtidos, respectivamente, com a substitui o de 64,09; 58,03 e 63,58% de milheto IA 98301 às ra es, entretanto, com 100% de substitui o os resultados foram satisfatórios. Pode-se concluir que os cultivares de milheto estudados apresentaram bom valor nutritivo e que, o milheto Comum ou Iapar IA 98301 podem substituir o milho nas ra es de coelhos em crescimento.
Morfoanatomia da plantula e do tirodendro de Arrabidaea mutabilis Bureau & K. Schum. (Bignoniaceae) = Morphology and anatomy of Arrabidaea mutabilis Bureau & K. Schum. seedling and tirodendro
Luiz Antonio de Souza,Willian Adriano Lira Lopes,Odair José Garcia de Almeida
Acta Scientiarum : Biological Sciences , 2007,
Abstract: Em remanescentes florestais da regi o noroeste do Paraná (Brasil), ocorrem várias espécies de lianas, que podem afetar o desenvolvimento de espécies arbóreas e arbustivas. Dentre essas lianas, destaca-se Arrabidaea mutabilis Bur. & K. Schum., pelo rápido crescimento e número elevado de sementes aladas. A análise morfológica e anat mica do desenvolvimento da plantula e do tirodendro desta espécie é objeto do presente trabalho. O material botanico foi secionado à m o livre e em micrótomo de rota o, mediante técnicas anat micas usuais. A plantula é fanerocotiledonar e epigéia, com cotilédones foliáceos eeofilos simples e opostos; o epicótilo tem estrutura caulinar. No tirodendro, há vários eofilos simples e compostos, formando-se o primeiro metafilo composto somente no décimo quarto nó. A raiz primária é triarca/pentarca, e o hipocótilo apresenta estrutura dezona de transi o raiz/caule. Os cotilédones, eofilos e metafilo s o folhas dorsiventrais. A plantula é do tipo Macaranga. In forest remnants of the Northwest region of Paraná (Brazil) several lianas that can affect the development of arboreal and shrubby species are found. Among the lianas Arrabidaea mutabilis Bur. & K. Schum. stands out for its fast growth and high number of alate seeds. The morphologic and anatomical analysis of t he seedling andtirodendro Arrabidaea mutabilis development is the object of the present study. The botanical material was sectioned by freehand and rotation microtome, using conventione anatomical techniques. Seedling is phanerocotylar and epigeal, with foliaceous cotyledons and simpleand opposite eophylls; the epicotyl has stem structure. There are several simple and compound eophylls in the tirodendro, the first compound metaphyll is formed only in the fourteenth node. The primary root is triarch/pentarch and the hypocotyl presents rootshoottransition structure. Cotyledons, eophylls and metaphyll are dorsiventral leaves. Seedling is of the Macaranga type.

Silvia Antonio Sfair,Dirceu da Silva,Mauro Neves Garcia,Sérgio Luiz do Amaral Moretti
Revista Ibero-Americana de Estratégia , 2011, DOI: 10.5585/riae.v10i1.1710
Abstract: In Brazil, generic drugs are considered safe and effective and substantially cheaper than the so-called reference medicinal products. Due to this, generic drugs have become an important sector within the pharmaceutical market. However, topical studies are scarce and researchers focus on health professionals and direct sales. This article looks to expand on the understanding concerning the subject investigating the vision of those responsible for production, its relationship with physicians, government policies and delivery chain management in serving the consumer. To present this objective, in-depth interviews were conducted with ten executives occupying strategic positions in the pharmaceutical industry in general. The sample represents approximately 84% of generic drug sales in Brazil. The results have demonstrated that government performance plays an important role in the marketing of generic drugs to the population, while the drugstore and distributors were identified in this market as growth barriers, due to the practices used at point of sale. Doctors are considered the prime agent in popularizing the use of generic drugs in Brazil. No Brasil os medicamentos genéricos s o considerados seguros e eficazes e, substancialmente mais baratos que os chamados medicamentos de referência e, por essa raz o tornaram-se um importante segmento no mercado farmacêutico. Contudo, os estudos sobre o tema, ainda s o escassos e os pesquisadores se concentram nos profissionais de saúde e de vendas diretas. Este artigo busca ampliar o conhecimento sobre o tema investigando a vis o dos responsáveis pela produ o, sua rela o com os médicos, políticas governamentais e sobre o gerenciamento do delivery chain para atender o consumidor. Para atender a esse propósito foram realizadas entrevistas em profundidade com dez executivos que ocupam cargos estratégicos na Indústria Farmacêutica de genéricos. A amostra representa aproximadamente 84% das vendas de medicamentos genéricos no Brasil. Os resultados mostraram que a atua o do governo desempenha um papel importante na divulga o de medicamentos genéricos à popula o, enquanto a farmácia e os distribuidores foram apontados como entraves ao crescimento deste mercado, devido as práticas utilizadas nos pontos de venda. Os médicos s o considerados o principal agente na populariza o do uso de medicamentos genéricos no Brasil.
Enhancing longevity of pacemakers through reprogramming. Underutilization and cost-effectiveness
Ribeiro Antonio Luiz Pinho,Garcia Rincón Leonor,Oliveira Bruna Guimar?es,Mota Cleonice Carvalho
Arquivos Brasileiros de Cardiologia , 2001,
Abstract: OBJECTIVE: This study was performed to observe the number of pacemakers that had never been reprogrammed after implantation, and the effect of optimised output programming on estimated longevity of pulse generators in patients with pacemaker METHODS: Sixty patients with Teletronics Reflex pacemakers were evaluated in a pacemaker clinic, from the time of the beginning of its activities, in June 1998, until March 1999. Telemetry was performed during the first clinic visit, and we observed how many pulse generators retained nominal output settings of the manufactures indicating the absence of reprogramming until that date. After evaluation of the capture threshold, reprogramming of pacemakers was performed with a safety margin of 2 to 2.5:1, and we compared the estimated longevity based on battery current at the manufacturer's settings with that based on settings achieved after reprogramming. RESULTS: In 95% of the cases, the original programmed setting was never reprogrammed before the patients attended the pacemaker clinic. Reprogramming the pacemaker prolonged estimated pulse generator life by 19.7±15.6 months (35.5%). CONCLUSION: The majority of the pacemakers evaluated had never been reprogrammed. Estimated pulse generator longevity can be prolonged significantly, using this simple, safe, efficacious, and cost-effective procedure.
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