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Search Results: 1 - 10 of 15652 matches for " Manuela Ramos Caldas;Araujo "
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Estratégias de aprendizagem empregadas por estudantes do Ensino Fundamental
Lins, Manuela Ramos Caldas;Araujo, Monilly Ramos;Minervino, Carla Alexandra da Silva Moita;
Psicologia Escolar e Educacional , 2011, DOI: 10.1590/S1413-85572011000100007
Abstract: in this work, we analyze the repertoire of learning strategies used by schoolchildren of the city of campina grande, paraiba, brazil. the study included 491 students of both sexes enrolled in the 6 th to 9 th year of elementary school for private and public schools, with an average age of 12 years and 7 months (sd = 1.7). the results were obtained by applying a collective scale of learning strategies. they indicated that there is a difference regarding the use of strategies by repeating and non repeating students. the difference is visible too, when we study groups according to gender, age, year and type of school attended. these results suggest that students may be aware of effective use of learning strategies, since they use them regularly in their daily lives. our research may suggest that further studies are needed in order to deepen and broaden the perception of the results presented here.
Magnetization of Planar Four-Fermion Systems
Heron Caldas,Rudnei O. Ramos
Physics , 2009, DOI: 10.1103/PhysRevB.80.115428
Abstract: We consider a planar system of fermions, at finite temperature and density, under a static magnetic field parallel to the two-dimensional plane. This magnetic field generates a Zeeman effect and, then, a spin polarization of the system. The critical properties are studied from the Landau's free energy. The possible observable consequences of the magnetization of planar systems such as polymer films and graphene are discussed.
A Reserva Ecológica Nacional (REN): sua importancia para o ambiente e ordenamento do território
Ana Ramos Pereira,Catarina Ramos,Manuela Laranjeira
Finisterra - Revista Portuguesa de Geografia , 2000,
Abstract: THE NATIONAL ECOLOGICAL RESERVE (REN): ENVIRONMENT AND MANAGEMENT IMPLICATIONS. The National Ecological Reserve (REN) defined in Decree-Law 93/90 of March 5th is the basic and diversified biophysical structure that guarantees environmental protection, through the creation of restricted areas at rish through erosion (littoral or slope), flooding and aquifer recharge. The REN valuation, whose main aspects are referred to here, was carried out by means of an analysis of Municipal Master Plans (PDM) and a survey sent to all local authorities. As it was impossible to analyse the PDM of every district, a dis- trict differentiation was completed based on the biophysical index (Fig. 1 and 2), subsequently crossed by the district human pressure to obtain the district spatial differentiation of the environmental strain (Fig. 3). This allowed a standard district to be selected where the REN was analysed in full detail (Fig. 4 to 9). The survey allowed for the evaluation of the main conflicts in other districts between the REN and the goals of the PDM to be assessed, including the issues concerning the delimitation and the way the REN is seen by the councils and the citizens. The REN includes physical and biophysical systems (slope, fluvial, aquifer and littoral) that tend never to coincide with the administrative divisions. It is urgent that a national network be created of REN areas, planned and managed through more integrated means and an inter-municipal collaboration that can only be effective if environmental education is promoted, on both formal and informal terms.
Margaritifera auricularia (Unionoidea, Margaritiferidae), the giant freshwater pearl mussel rediscovered in Spain
Araujo, R.,Ramos, M. A.
Graellsia , 1998,
Abstract: Not available No disponible
Biotecnologia no contexto da Conven o de Diversidade Biológica: análise da implementa o do Art. 19 deste Acordo
M?nica Cibele Amancio,Ruy de Araujo Caldas
Desenvolvimento e Meio Ambiente , 2010,
Abstract: Modern biotechnology is one of the most important technological tools nowadays, and its development involves discussions related to food and environmental safety of their products. These discussions occur within various international organizations, originating different Agreements about the theme. One of the most important is the Convention on Biological Diversity – CBD – and its associated agreement, the Cartagena Protocol on Biosafety. This work sought to identify how biotechnology is handled in the CBD, analyzing the implementation of Article 19 and its consequences in terms of discussions about theregulatory framework related to biosafety. It presents the concept of biotechnology and its implications, the approach to the subject under the Convention on Biological Diversity and the Cartagena Protocol,and the Brazilian law on biosafety. This work concluded that, although the purpose of Article 19 of the CBD was much broader, namely, regulating the handling of biotechnology and distribution of benefitsamong member countries of this Agreement, such claims were not obtained, restricting the discussion to the scope of issues related to GMO biosafety. The challenge now is to expand this discussion so thatthe benefits of this new technology can actually be achieved and distributed both between developed countries and developing countries, always in a sustainable manner.
Necrophagous species of Diptera and Coleoptera in northeastern Brazil: state of the art and challenges for the Forensic Entomologist
Vasconcelos, Sim?o D.;Araujo, Manuela C. S.;
Revista Brasileira de Entomologia , 2012, DOI: 10.1590/S0085-56262012005000014
Abstract: inventories on necrophagous insects carried out in brazil encompass mostly species from the southeastern and central-western regions of the country. this review aims to produce the first checklist of necrophagous diptera and coleoptera species of forensic relevance in northeastern brazil, an area that concentrates high rates of homicides. we performed a literature survey on scientific articles, theses and dissertations regarding necrophagous insect species in the region, and contacted scientists who develop research on forensic entomology. fifty-two species of diptera belonging to eight families with previous record of necrophagy were reported in the region: sarcophagidae, calliphoridae, muscidae, fanniidae, piophilidae, phoridae, anthomyiidae and stratiomyidae. coleopteran species from six families of forensic relevance were registered, although taxonomical identification remained superficial. bait traps were the most frequent methodology used, followed by collection on animal carcasses. seven dipteran species from two families were registered on human cadavers. all species had been previously reported in other brazilian states and/or other countries, although none has been effectively used in legal procedures in the region. the status of research on forensic entomology in northeastern brazil is incipient, and the checklist produced here contributes to the knowledge on the local diversity of necrophagous insects.
Line and Word Matching in Old Documents
A. Marcolino,Vitorino Ramos,Mario Ramalho,J. R. Caldas Pinto
Computer Science , 2004,
Abstract: This paper is concerned with the problem of establishing an index based on word matching. It is assumed that the book was digitised as better as possible and some pre-processing techniques were already applied as line orientation correction and some noise removal. However two main factor are responsible for being not possible to apply ordinary optical character recognition techniques (OCR): the presence of antique fonts and the degraded state of many characters due to unrecoverable original time degradation. In this paper we make a short introduction to word segmentation that involves finding the lines that characterise a word. After we discuss different approaches for word matching and how they can be combined to obtain an ordered list for candidate words for the matching. This discussion will be illustrated by examples.
Response Proliferative Capacity of Undifferentiated Stem Cells of Obtained Human Adult Dental Follicle  [PDF]
Larissa Kim Higashi de Carvalho, Aline Vieira Pinheiro de Araujo, Manuela Garcia Laveli da Silva, Rosa Andréa Nogueira Laiso, Durvanei Augusto Maria
Stem Cell Discovery (SCD) , 2014, DOI: 10.4236/scd.2014.44013
Abstract: Objective: The aim of this study was correlation proliferative activity, markers express stem cells, and lipid peroxides of undifferentiated stem cells of human adult dental follicle (DF) following culture. Methods: For this study, we used 8 samples from DF of impacted third molars to maintain culture conditions and evaluated the growth curve, cell viability, production of lipid peroxidation, cell cycle phases, and proliferative index during 25 days of culture. Results: Cells after culture showed characteristics of fibroblast-like type following 25th day of culture. The results of lipid peroxidation showed that stem cells in culture produce 13 nmoles/ml malondialdehyde at the start of culture, increasing until the 12th day and then began a decline that lasted until the 25th day. We revealed that DFSCs presented a significantly higher percentage of cells in S + G2/M phases by the 15th day of culture compared with cells at the start of culture. Cell surface markers revealed that cell lines were negative for HLA-DR and positive for CD90, CD44, and CD105. The expression of p21 protein, involved in the regulation of the cell cycle, showed a significant increase from the 15th to 25th day of culture. Results of cell division rates show a significant increase between the 6th and 15th day of culture. Conclusions: We conclude that the culture remained stable during the 25 days of culture, presenting the markers of stem cells and markers of control, progression, and cell proliferation that there was an increased production of lipid peroxides between the 6th and 12th days; this increase is related to the increased numbers of cells that also occurs during this period. Then, there is a significantly decline in the production of lipid peroxides and the number of cells, which is accompanied by an increase in cell unviability.
Phenylhydrazinium (6-carboxypyridine-2-carboxylato)(pyridine-2,6-dicarboxylato)cobaltate(II)–pyridine-2,6-dicarboxylic acid–water (1/1/3)
Consuelo Yuste,Manuela Ramos Silva,Mohammad Ghadermazi,Fariba Feizi
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810048191
Abstract: The asymmetric unit of the title compound, (C6H9N2)[Co(C7H3NO4)(C7H4NO4)]·C7H5NO4·3H2O, contains one (6-carboxypyridine-2-carboxylato)(pyridine-2,6-dicarboxylato)cobaltate(II) anion, one phenylhydrazinium cation, one pyridine-2,6-dicarboxylic acid molecule and three uncoordinated water molecules, part of which are disordered. The CoII ion is coordinated by a pyridine-2,6-dicarboxylate ion and a 6-carboxypyridine-2-carboxylate ligand almost perpendicular to each other [the angle between the least-squares planes is 87.38 (4)°] and is surrounded by two O atoms and two N atoms in the equatorial plane and two O atoms in axial positions, resulting in a distorted octahedral coordination geometry. There is an extensive three-dimensional network of O—H...O and N—H...O hydrogen bonds, which link the components.
Bis(2,4,6-triamino-1,3,5-triazin-1-ium) bis(4-hydroxypyridine-2,6-carboxylato)cuprate(II) hexahydrate
Manuela Ramos Silva,Elham Motyeian,Hossein Aghabozorg,Mohammad Ghadermazi
Acta Crystallographica Section E , 2008, DOI: 10.1107/s160053680802566x
Abstract: In the title compound, (C3H7N6)2[Cu(C7H3NO5)2]·6H2O, the coordination geometry of the CuII atom can be described as distorted octahedral. The equatorial plane is defined by four O atoms from two 4-hydroxypyridine-2,6-dicarboxylate ligands. The axial positions are occupied by the N atoms of the same ligands. There is an extensive three-dimensional hydrogen-bond network reinforcing crystal cohesion.
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