Microscopy Eletronic
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Thermomechanical Properties of Corn Starch Based Film Reinforced with Coffee Ground Waste as Renewable Resource
Abstract Starches polymeric films offer several advantages for the replacement of synthetic polymers due to their biodegradability, non-toxicity, availability and low cost. However, the high biodegradation potential can cause fragility, considering some fundamental mechanical properties. Therefore, starch based polymeric films were reinforced incorporating l
Mat. Res.. Publicado em: 07/01/2019
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2. Genetic and morphological patterns in populations of Culex quinquefasciatus (Diptera:Culicidade). / Padrões genético-morfológicos em populações de Culex quinquefasciatus (Diptera: Culicidae).
Culex quinquefasciatus is a pantropical synanthropic species of great medical interest. Several attempts to control this species have fail due to its microvelution of resistance to insecticides. In order to detect populational variation indicative of microevolution, two populational samples from State of São Paulo were compared: São Paulo municipality (Par
Publicado em: 2009
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3. UtilizaÃÃo da serragem de Eucalyptus sp. na preparaÃÃo de carvÃes ativados / Utilization of sawdust of Eucalyptus sp. for activated carbons preparation
The aim of this study was to use the eucalyptus sawdust, waste timber industry, in the preparation of activated carbons (AC) and test them as adsorbents of organic compounds and metal ions. Initially, the Eucalyptus sp sawdust was characterized by chemical analysis like cellulose, lignin, hemicelluloses, ash and extractives content as well as some instrument
Publicado em: 2009
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4. Avaliação da formação de biofilme de especies de candida sobre a superficie de resinas acrilicas para base e reembasamento de proteses removiveis / Evaluation of Candida species biofilm formation on acrylic resin and denture liners used in prosthodontics
Candida-associated stomatitis is the most common fungal oral infection in humans, with a prevalence reported in up to 77.5% of a population wearing dentures. Disease-associated Candida species have shifted from C. albicans to non-albicans species, these latter being responsible for more than 50% of the infections. Additionally, several factors as the presenc
Publicado em: 2008
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5. UtilizaÃÃo de fibras de piaÃava (Attalea funifera) na preparaÃÃo de carvÃes ativados. / Utilization of piassava fibers (Attalea funifera) for activated carbons preparation.
The piassava fibers, piassava broom production waste, were used as a precursor to prepare activated carbons. The activated carbons were prepared by chemical activation with zinc chloride, phosphoric acid and iron chloride and by physical activation with carbon dioxide and water steam. The resulting activated carbons were characterized by N2 adsorption/desorp
Publicado em: 2008
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6. THE USE OF CYANOACRYLATE ADHESIVE FOR FIXATION OF CORNEAL AUTO E ALOIMPLANTS PRESERVED IN 98% GLYCERIN IN THE PENETRATING KERATOPLASTY IN RABBITS / USO DE ADESIVO DE CIANOACRILATO PARA A FIXAÇÃO DE BOTÃO CORNEAL AUTÓGENO OU ALÓGENO CONSERVADO EM GLICERINA A 98% NA CERATOPLASTIA PENETRANTE EM COELHOS.
The present research had the objective to evaluate the use of an n-butil cyanoacrylate in the fixation and maintenance of corneal autografts and aloimplants in the penetrating keratoplasty. There were used eight adult rabbits divided in two groups: the group I adhesive (GI 4 animals) and group II suture (GII 4 animals). In the GI, performed in the left eye,
Publicado em: 2007
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7. Taxonomic reports of Otobothrioidea (Eucestoda, Trypanorhyncha) from elasmobranch fishes of the southern coast off Brazil
Specimens of elasmobranch fishes, captured in the states of Paraná and Santa Catarina, of the southern coast off Brazil, represented by three families, four genera, and four species, were parasitized with otobothrioid trypanorhynch cestodes: Heptranchias perlo (Bonnaterre, 1788), Squalus sp. and Carcharhinus signatus (Poey, 1868) were parasitized with Progr
Memórias do Instituto Oswaldo Cruz. Publicado em: 2004-02
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8. Dinâmica populacional e mecanismos de tolerância de espécies de plantas daninhas ao herbicida Glyphosate. / Population dynamic and tolerance mechanisms of weed species to the glyphosate herbicide.
Intensive applications of the herbicide glyphosate for weed control may result in the weed population changes, through selection pressure of the glyphosate tolerant weed species. However, the glyphosate tolerance mechanisms of these species are not completely understood, and the elucidation of these mechanisms is fundamental to the recommendations of alterna
Publicado em: 2003
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9. Poly(2-Furyl)Methylenesulfide as a Resin to Uptake of Metal Ions from Aqueous Solutions
The polymerization of poly (2- furyl) methylenesulfide -- POLYTHIOFURFURAL -- was performed in an 0.36 mol/L aqueous solution of furfuraldehyde, saturated by bubbling hydrogen sulfide for 2 h at different temperatures. The reaction product was thoroughly washed and dried at 40 °C under vacuum. Poly (2-furyl) methylenesulfyde is a yellow powder with a rather
Materials Research. Publicado em: 2002-06
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10. Estudo de propriedades eletricas e caracteristicas fisico-quimicas do polipirrol obtido por sintese fotoquimica
The scientific and technological interest for the conducting polymers has increased for the fact of the possibility aplications in substitute to traditional metals. Emphasize the Polianilin, Politiofen, Poli(p-fenilen) and Polypyrrole and its derivatives. The Polypyrrole (PPy) can be obtained by chemistry synthesis, eletrochemistry and more recendy photochem
Publicado em: 2002
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11. Cladonia verticillaris (lÃquen) como biomonitor padrÃo da qualidade do ar no distrito de JaboatÃo-PE
Liquens are recognized as environmental bioindicators and biomonitors of air quality. In this research the District of JaboatÃo, Metropolitan Meso-region of Recife (MMR), Pernambuco, Brazil was selected for evaluating the air quality in that area, correlating data obtained from the biological monitors â liquens, with the results obtained in the stations of
Publicado em: 2002
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12. Caracterização de geis tixotropicos utilizados em telecomunicações
This work is enclosed in a project of development of national technology in Telecommunications with participation of UNICAMP and TELEBRÁS Research and Development Center. Today, a number of the materials used in optical cables are imported, without a specific knowledge of their behavior in the Brazilian climate conditions. The gels used for cable filling ar
Publicado em: 1992