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Search Results: 1 - 10 of 24329 matches for " Izabel Cristina;Monteiro "
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Detec??o de sífilis por ensaios de ELISA e VDRL em doadores de sangue do Hemonúcleo de Guarapuava, Estado do Paraná
Oliveira, Viviane Matoso de;Verdasca, Izabel Cristina;Monteiro, Marta Chagas;
Revista da Sociedade Brasileira de Medicina Tropical , 2008, DOI: 10.1590/S0037-86822008000400023
Abstract: the aim of this study was to evaluate the syphilis seroprevalence among 5,752 blood donors who were attended at the blood center of guarapuava, state of paraná, in 2006. the seropositivity rates were 2.1% for enzyme linked immuno sorbent assay and 0.2% for veneral disease research laboratory, thus showing low prevalence of syphilis among the individuals who came to this blood bank.
Prevalence of microorganisms in root canals of human deciduous teeth with necrotic pulp and chronic periapical lesions
Pazelli Luciana Cunha,Freitas Aldevina Campos de,Ito Izabel Yoko,Souza-Gugelmin Maria Cristina Monteiro de
Pesquisa Odontológica Brasileira , 2003,
Abstract: The objective of this study was to evaluate bacterial prevalence in 31 root canals of human deciduous teeth with necrotic pulp and periapical lesions using bacterial culture. After crown access, the material was collected using absorbent paper points for microbiological evaluation and determination of colony forming units (CFU). Anaerobic microorganisms were found in 96.7% of the samples, black-pigmented bacilli in 35.5%, aerobic microorganisms in 93.5%, streptococci in 96.7%, and S. mutans in 48.4%. We concluded that in human deciduous teeth root canals with necrotic pulp and periapical lesions the infection is polymicrobial, with a large number of microorganisms and a predominance of streptococci and anaerobic microorganisms.
Inorganic-organic hybrids based on poly (ε-Caprolactone) and silica oxide and characterization by relaxometry applying low-field NMR
Monteiro, Mariana Sato de Souza de Bustamante;Cucinelli Neto, Roberto Pinto;Santos, Izabel Cristina Souza;Silva, Emerson Oliveira da;Tavares, Maria Inês Bruno;
Materials Research , 2012, DOI: 10.1590/S1516-14392012005000121
Abstract: poly (ε-caprolactone) (pcl) based hybrids containing different amounts of modified (aerosil? r972) and unmodified (aerosil? a200) silica oxide were prepared employing the solution method, using chloroform. the relationships of the amount of nanofillers, organic coating, molecular structure and intermolecular interaction of the hybrid materials were investigated mainly using low-field nuclear magnetic resonance (nmr). the nmr analyses involved the hydrogen spin-lattice relaxation time (t1h) and hydrogen spin-lattice relaxation time in the rotating frame (t1ρh). the spin-lattice relaxation time measurements revealed that the pcl/silica oxide hybrids were heterogeneous, meaning their components were well dispersed. x-ray diffraction (xrd), differential scanning calorimetry (dsc) and thermogravimetric analysis (tga) were also employed. the dsc data showed that all the materials had lower crystallization temperature (tc) and melting temperature (tm), so the crystallinity degree of the pcl decreased in the hybrids. the tga analysis demonstrated that the addition of modified and unmodified silica oxide does not cause considerable changes to pcl's thermal stability, since no significant variations in the maximum temperature (tmax) were observed in relation to the neat polymer.
Bacterial profile in primary teeth with necrotic pulp and periapical lesions
Silva, Léa Assed Bezerra da;Nelson-Filho, Paulo;Faria, Gisele;Souza-Gugelmin, Maria Cristina Monteiro de;Ito, Izabel Yoko;
Brazilian Dental Journal , 2006, DOI: 10.1590/S0103-64402006000200012
Abstract: the objective of this study was to evaluate the bacterial profile in root canals of human primary teeth with necrotic pulp and periapical lesions using bacterial culture. a total of 20 primary teeth with necrotic pulp and radiographically visible radiolucent areas in the region of the bone furcation and/or the periapical region were selected. after crown access, 4 sterile absorbent paper points were introduced sequentially into the root canal for collection of material. after 30 s, the paper points were removed and placed in a test tube containing reduced transport fluid (rtf) and were sent for microbiological evaluation. anaerobic microorganisms were found in 100% of the samples, black-pigmented bacilli in 30%, aerobic microorganisms in 60%, streptococci in 85%, gram-negative aerobic rods in 15% and staphylococci were not quantified. mutans streptococci were found in 6 root canals (30%), 5 canals with streptococcus mutans and 1 canal with streptococcus mutans and streptococcus sobrinus. it was concluded that in root canals of human primary teeth with necrotic pulp and periapical lesions, the infection is polymicrobial with predominance of anaerobic microorganisms.
Microbial contamination in dental unit waterlines
Souza-Gugelmin, Maria Cristina Monteiro de;Lima, Carolina Della Torre;Lima, Sergio Narciso Marques de;Mian, Henis;Ito, Izabel Yoko;
Brazilian Dental Journal , 2003, DOI: 10.1590/S0103-64402003000100010
Abstract: the quality of water in a dental unit is of considerable importance because patients and dental staff are regularly exposed to water and aerosol generated from the dental unit. the aim of this study was to evaluate the occurrence of microbial contamination in dental unit waterlines. water samples were collected aseptically from the waterlines (reservoir, triple-syringe, high-speed) of 15 dental units. after serial dilution to 1:106 in apha, the samples were seeded by the pour-plate technique and cultured in plate count agar (difco) for 48 h at 32oc. analysis was based on the number of colony forming units (cfu). the wilcoxon non-parametric test indicated that the levels of water contamination were highest in the triple-syringe (13 of 15) and in the high-speed (11 of 15); both levels were higher than those of the water reservoir. there was no significant statistical difference between the level of contamination in the triple-syringe and the high-speed as determined by the mann-whitney test [p(h0) = 40.98%; z = - 0.2281]. because biofilm forms on solid surfaces constantly bathed by liquid where microorganisms are present, these results indicate that the water in the dental unit may be contaminated by biofilm that forms in these tubules.
Produ??o de anticorpos policlonais anti-ricina
Furtado, Roselayne Ferro;Guedes, Maria Izabel Florindo;Alves, Carlucio Roberto;Moreira, Ana Cristina de Oliveira Monteiro;Felix, Wagner Pereira;Dutra, Rosa Amália Fireman;
Ciência e Agrotecnologia , 2011, DOI: 10.1590/S1413-70542011000100015
Abstract: ricin is a very toxic protein found in castor bean plants, making it impossible to use natural castor cake as animal food. the detoxificated castor cake needs to be analyzed by methods that ensure the absence of traces of this protein. this work had the objective to produce and to evaluate the sensitivity and specificity of anti-ricin polyclonal antibodies, to be employed as component of sorologic methods as the elisa in the detection of ricin in detoxificated castor cake. three doses of protein, 400, 180 and 100 μg were evaluated each one injected twice into rabbit, with one half in the begin of the experiment and the other half after 21 days of immunization. the elisa method indicated that the lower doses (100 e 180 μg) induced primary and secondary immunological response with production of specific antibodies, while the higher dose of ricin (400 μg) showed a primary response with increase of the antibody titre, followed of immunological suppression. this profile suggests immunological tolerance. by western blotting technique it was verified that polyclonal antibodies are too specific to ricin, however, they detected ricin in native and denaturated form and are not recommended for the monitoring of ricin in detoxificated castor bean cake by heat treatment.
Prevalence of microorganisms in root canals of human deciduous teeth with necrotic pulp and chronic periapical lesions
Pazelli, Luciana Cunha;Freitas, Aldevina Campos de;Ito, Izabel Yoko;Souza-Gugelmin, Maria Cristina Monteiro de;Medeiros, Alexandra Sárzyla;Nelson-Filho, Paulo;
Pesquisa Odontológica Brasileira , 2003, DOI: 10.1590/S1517-74912003000400013
Abstract: the objective of this study was to evaluate bacterial prevalence in 31 root canals of human deciduous teeth with necrotic pulp and periapical lesions using bacterial culture. after crown access, the material was collected using absorbent paper points for microbiological evaluation and determination of colony forming units (cfu). anaerobic microorganisms were found in 96.7% of the samples, black-pigmented bacilli in 35.5%, aerobic microorganisms in 93.5%, streptococci in 96.7%, and s. mutans in 48.4%. we concluded that in human deciduous teeth root canals with necrotic pulp and periapical lesions the infection is polymicrobial, with a large number of microorganisms and a predominance of streptococci and anaerobic microorganisms.
O amor nos tempos de Narciso
Rios, Izabel Cristina;
Interface - Comunica??o, Saúde, Educa??o , 2008, DOI: 10.1590/S1414-32832008000200016
Abstract: this paper discusses the difficulty of amorous encounters nowadays. it starts from a psychoanalytic reading of the origins of types of love within the psychosexual development phase known as primary narcissism. in this, the self and the other are constructed within a cultural context. over the course of life, identity continues to be shaped by the interaction between the self and the surrounding world. from studying some aspects of the present-day world, the idea developed is that contemporary culture has values and models that do not support interpersonal relationships because they stimulate a narcissistic manner of subjectivation. values such as individualism, consumerism and cult of the body and image produce behavior that demonstrates the supremacy of the self. in the present-day world, everyone is engrossed in himself or herself, and the other, as somebody different from the self, is undesirable. this subjective position impedes authentic amorous encounters and their survival.
Chlorophyta filamentosas do município de Cáceres e arredores, Mato Grosso, Brasil: uma contribui??o ao seu conhecimento
Dias, Izabel Cristina Alves;
Acta Botanica Brasilica , 1989, DOI: 10.1590/S0102-33061989000200001
Abstract: twelve species of filamentous chlorophyta from the municipality of cáceres and surroundings, state of mato grosso, brazil, are described, illustrated, and discussed. nine species were documented for the first time for mato grosso, and six for the brazilian territory.
Humanidades e medicina: raz?o e sensibilidade na forma??o médica
Rios,Izabel Cristina;
Ciência & Saúde Coletiva , 2010, DOI: 10.1590/S1413-81232010000700084
Abstract: this article briefly discusses the teaching of humanities at the medicine course and presents a proposal developed at the center of medical education development (cedem) of the medicine school of s?o paulo university (faculdade de medicina da universidade de s?o paulo - fmusp) for the integration of this area in the curriculum. the curricular integration is a strategy of education, based on the systemic vision that involves actions of wide educational range. the teaching of humanities in medicine aims at approaching the techniques and the look at the human condition, as well as develops didactic-pedagogical methods to its learning. the proposal of integration presented in this article consists of six strategic actions, in different states of development: (1) elaboration of the terminal objectives of the area for the student's formation, (2) integration of six humanity disciplines of the current curriculum, (3) integration of the humanistic subjects with others disciplines in accordance with the terminal objectives of the area, (4) planning of teaching development courses in medical humanities, (5) development of evaluation system and supervision of the humanistic formation, (6) spreading of the "humanities and medicine" area.
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