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Search Results: 1 - 10 of 20239 matches for " Maurício Ant?nio; "
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Prefácios de livros didáticos de matemática: uma possível leitura da história da matemática escolar no brasil (1943-1995)
Medeiros Alves,Antnio Maurício;
Paradígma , 2005,
Abstract: the present work is resulted partially of the research mathematics text book: a historical approach (1943 - 1995), it was presented as master's degree dissertation in fae/ufpel. the research used as methodology the documental analysis, considering as documents text books of the four final series of the current fundamental teaching, of the period of 1943 up to 1995. among the objectives of the research they are: the recover of the different mathematics present in the text books, the understanding of the path of the mathematics while it disciplines school in the fundamental teaching and, still, to verify which changes and permanences in the teaching of the mathematics can identify in the text books. to assist to the objectives proposed in the dissertation, it was considered as first analysis object the forewords of the selected text books. the text here presented tries to elaborate a possible reading of the history of the school mathematics in brazil, starting from the found forewords, relating those texts to facts of the history of the mathematics while it school disciplines.
Rooting Potential of Mini-Cuttings for the Production of Potato Plantlets  [PDF]
Dilson Antnio Bisognin, Maurício Guerra Bandinelli, Paula Kielse, Hardi Fischer
American Journal of Plant Sciences (AJPS) , 2015, DOI: 10.4236/ajps.2015.62042
Abstract: The production of mini-tubers under soilless cultivation system increased the availability of pathogen-free seed potatoes. The objective of this study was to evaluate the rooting capability of mini-cuttings of potato clones as a function of the irrigation solution and the physiological age of the mother plant, under soilless cultivation system. Potato mini-cuttings were collected from young and mature plants of the cultivars Asterix and Macaca and the advanced clone SMINIA 793101-3. The young plants were newly acclimatized individuals and the mature plants were at the stage of producing mini-tubers. In the first experiment, mini-cuttings originating from summer pruning of mature plants were grown under closed soilless cultivation system irrigated with a nu- trient solution developed for the production of potato mini-tubers and a solution comprised of tap water only. The experiment was conducted in a 3 × 2 factorial arrangement (clones and irrigation solutions) in the complete random design with four replicates of 15 mini-cuttings. In the second experiment, the young and mature mini-cuttings were established under a closed soilless cultivation system irrigated with nutrient solution. The experiment was conducted in a 3 × 2 factorial arrangement (clones and physiological age of the mother plant) in the complete random design with four replicates of 15 mini-cuttings. In both experiments, the percentage of rooting and survival of mini-cuttings, number of roots and length of the longest root were assessed at 21 days of cultivation. Potato mini-cuttings can be rooted under closed soilless cultivation system irrigated with nutrient solution or tap water. Mini-cuttings of young plants have higher rooting capability compared to the ones taken from mature plants. The loss of rooting capability depends upon the potato cultivar.
A Comparative Analysis between BPMN and SPEM Modeling Standards in the Software Processes Context  [PDF]
Carlos Portela, Alexandre Vasconcelos, Antnio Silva, Ariane Sinimbú, Elder Silva, Maurício Ronny, Wallace Lira, Sandro Oliveira
Journal of Software Engineering and Applications (JSEA) , 2012, DOI: 10.4236/jsea.2012.55039
Abstract: The main objective of this paper is to analyze the representativeness of the SPEM (Software Process Engineering Metamodel Specification) and the BPMN (Business Process Modeling Notation) standards in the software processes modeling context. To perform this analysis, it was adopted a standard structure to define a software process based upon a process ontology. Then, the SPEM and BPMN standards notations and their semantically corresponding elements in the default process were identified. This mapping also includes components of the CMMI-DEV (Capability Maturity Model Integration for Development) and MR-MPS (Reference Model for Software Process Improvement) quality models. This was necessary to assist in the mapping evaluation through a case study which models the best practices of these quality models. Finally, we carried out an analysis of these standards through specific characteristics considered necessary to model and to represent software processes.
xSPIDER_ML: Proposal of a Software Processes Enactment Language Compliant with SPEM 2.0  [PDF]
Carlos Portela, Alexandre Vasconcelos, Antnio Silva, Elder Silva, Mariano Gomes, Maurício Ronny, Wallace Lira, Sandro Oliveira
Journal of Software Engineering and Applications (JSEA) , 2012, DOI: 10.4236/jsea.2012.56044
Abstract: SPEM (Software Process Engineering Metamodel Specification) is the software processes modeling standard defined by OMG (Object Management Group). However, the process enactment support provided by this standard has many deficiencies. Therefore, the main objective of this paper is to propose a language for software process enactment based upon SPEM 2.0 concepts. First, we will present a critical analysis of the SPEM standard approach for enactment. Then, we will present xSPIDER_ML, an enactment language, and describe its structure, components and associated rules. In order to evaluate the proposed language, a case study is performed through a RUP (Rational Unified Process) process instantiation. The language presented in this paper is part of a support set of tools for flexible software process enactment. Additionally, this set of tools is in compliance with software process quality models.
Magnetic resonance in diagnosis of ureterocele
Nascimento, Humberto do;Hachul, Maurício;Macedo Jr, Antnio;
International braz j urol , 2003, DOI: 10.1590/S1677-55382003000300012
Abstract: ultrasonography is the main non-invasive technique for screening of ureterocele, but presents some difficulties for its diagnosis. other supplementary diagnostic methods have the disadvantage of being invasive or using ionizing radiation. magnetic resonance (mr) has a high sensitivity for diagnosing urinary tract malformations in adults and children. we report one case of ureterocele in a 1-year old child with the purpose of presenting its diagnosis through mr
Oviposition behavior of Neomegalotomus parvus (West.) (Hemiptera: Alydidae): daily rhythm and site choice
Ventura, Maurício U.;Panizzi, Antnio R.;
Anais da Sociedade Entomológica do Brasil , 2000, DOI: 10.1590/S0301-80592000000300002
Abstract: neomegalotomus parvus (west.) behavior related to choosing crevices of pigeon pea, cajanus cajan (l.) millsp., pods to lay eggs were studied. blocking antennae, tarsi, eyes, abdomen, or all structures simultaneously, did not affect the site of the pod (crevices) chosen to lay eggs. oviposition occurred mainly in the afternoon. most eggs were laid from 4 to 6 pm. females moved antennae alternately up and down. dabbing/antennation was accomplished, first with antennae and then with antennae and labial tip and the ovipositor was exposed and swept over the surface of the pod, leading to oviposition. eggs were held together with an adhesive substance. mechanoreceptors were observed on the ovipositor.
Megalotomus parvus West. (Hemiptera: Alydidae): inseto adequado para experimenta??o e didática entomológica
Ventura, Maurício U.;Panizzi, Antnio R.;
Anais da Sociedade Entomológica do Brasil , 1997, DOI: 10.1590/S0301-80591997000300026
Abstract: megalotomus parvus west. is a neotropical alydid very common and abundant in northern paraná state (23o 11' s latitude, 51o 11' w longitude). a colony of this bug was maintained in the laboratory for successive generations. nymphs and adults were reared in plastic boxes (12,0 x 12, 0 x 3,8 cm) lined with filter paper, using mature seeds of pigeon pea, cajanus cajan plus water (imbibed cotton). the easiness of which m. parvus was reared in the laboratory allow to suggest the use of this bug for research and teaching purposes.
Responses of Neomegalotomus parvus (Hemiptera: Alydidae) to color and male-lured traps
Ventura, Maurício Ursi;Panizzi, Antnio Ricardo;
Brazilian Archives of Biology and Technology , 2004, DOI: 10.1590/S1516-89132004000400005
Abstract: in 1998, the relative responses of neomegalotomus parvus (westwood) (hemiptera: alydidae) to colors in traps were assessed in the field. colors were printed in white alkaline paper and covered with transparent plastic. printed colors were black, green, yellow, red and blue. treatments also included white paper and aluminum foil. green traps captured more bugs than the other traps (except yellow). yellow traps caught significantly more n. parvus males than blue, black and aluminum traps. white, red and blue traps captured significantly more n. parvus males than black traps. in 1999, the same treatments were used and additionally included the factor presence (x absence) of males in cages in the traps. four males were confined in the cages together with pigeon pea seeds and water. control traps received only pigeon pea seeds and water. no responses were found for color comparisons. male-lured traps captured significantly more males than control traps.
Morphology of olfactory sensilla and its role in host plant recognition by Neomegalotomus parvus (Westwood) (Heteroptera: Alydidae)
Ventura, Maurício Ursi;Panizzi, Antnio Ricardo;
Brazilian Archives of Biology and Technology , 2005, DOI: 10.1590/S1516-89132005000500012
Abstract: the external morphology of the sensilla, including pores and permeable points on the cuticle of the antennae of adults of neomegalotomus parvus (west.) (heteroptera: alydidae) was investigated with regard to their olfactory function. behavioural evidence of olfaction, the importance of the different antennal segments in locating the host under still-air, and the responses of the insects to plants' scents and to pheromones in wind assays were also studied. with the scanning electronic microscope mechanoreceptor sensilla were found on the four segments of the antennae of n. parvus. the density of the sensilla was greater on the 4th segment. on the apical segment, sensilla with olfactory morphological traits were observed. bugs with intact antennae located food more frequently and faster than those with blocked or amputated antennae. n. parvus preferred intact seeds to sealed seeds, but there was no preference when the last segment of the antenna was blocked. in wind tunnel, bugs were attracted to mature and green pods, and to hexanic extract of mature pods of pigeon pea, cajanus cajan (l.) millsp.; there was no response to panicles of rice, oryza sativa l. or to the male pheromone.
Population dynamics, gregarious behavior and oviposition preference of Neomegalotomus parvus (Westwood) (Hemiptera: Heteroptera: Alydidae)
Ventura, Maurício Ursi;Panizzi, Antnio Ricardo;
Brazilian Archives of Biology and Technology , 2003, DOI: 10.1590/S1516-89132003000100006
Abstract: interactions between neomegalotomus parvus (westwood) (coreoidea: heteroptera: alydidae) and host plants were investigated including population monitoring throughout the year, gregarious behavior in the field, and oviposition preference among host plants and one non-host plant in field cages. cowpea, vigna unguiculata (l.) walp., soybean, glycine max (l.) mill. cv. br 37, pigeon pea, cajanus cajan (l.) mill., pigeon pea cv. an?o, and lablab, dolichos lablab l. were monitored in the field. n. parvus was found on host plants during 11 months. the shortest period of occurrence was observed on soybean and the longest on lablab. insects were found mostly on mature pods. contagious distribution (negative bionomial) was detected, characterizing the aggregation. greater number of eggs were observed on pigeon pea, followed by soybean and lablab. eggs were not found on cowpea, on common bean phaseolus vulgaris l., and on rice, oryza sativa l.
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