Estudo de Fractalidade e Evolu����o Din��mica de Sistemas Complexos

In this work, the study of some complex systems is done with use of two distinct procedures. In the first part, we have studied the usage of Wavelet transform on analysis and characterization of (multi)fractal time series. We have test the reliability of Wavelet Transform Modulus Maxima method (WTMM) in respect to the multifractal formalism, trough the calculation of the singularity spectrum of time series whose fractality is well known a priori. Next, we have use the Wavelet Transform Modulus Maxima method to study the fractality of lungs crackles sounds, a biological time series. Since the crackles sounds are due to the opening of a pulmonary airway bronchi, bronchioles and alveoli which was initially closed, we can get information on the phenomenon of the airway opening cascade of the whole lung. Once this phenomenon is associated with the pulmonar tree architecture, which displays fractal geometry, the analysis and fractal characterization of this noise may provide us with important parameters for comparison between healthy lungs and those affected by disorders that affect the geometry of the tree lung, such as the obstructive and parenchymal degenerative diseases, which occurs, for example, in pulmonary emphysema. In the second part, we study a site percolation model for square lattices, where the percolating cluster grows governed by a control rule, corresponding to a method of automatic search. In this model of percolation, which have characteristics of self-organized criticality, the method does not use the automated search on Leaths algorithm. It uses the following control rule: pt+1 = pt + k(Rc ��� Rt), where p is the probability of percolation, k is a kinetic parameter where 0 < k < 1 and R is the fraction of percolating finite square lattices with side L, LxL. This rule provides a time series corresponding to the dynamical evolution of the system, in particular the likelihood of percolation p. We proceed an analysis of scaling of the signal obtained in this way. The model used here enables the study of the automatic search method used for site percolation in square lattices, evaluating the dynamics of their parameters when the system goes to the critical point. It shows that the scaling of , the time elapsed until the system reaches the critical point, and tcor, the time required for the system loses its correlations, are both inversely proportional to k, the kinetic parameter of the control rule. We verify yet that the system has two different time scales after: one in which the system shows noise of type 1 f , indicating to be strongly correlated. Another in which it shows white noise, indicating that the correlation is lost. For large intervals of time the dynamics of the system shows ergodicity

Caracteriza����o de dois cDNAs homol��gos e uma AP endonuclease em cana-de-a����car

The genome of all organisms is subject to injuries that can be caused by endogenous and environmental factors. If these lesions are not corrected, it can be fixed generating a mutation which can be lethal to the organisms. In order to prevent this, there are different DNA repair mechanisms. These mechanisms are well known in bacteria, yeast, human, but not in plants. Two plant models Oriza sativa and Arabidopsis thaliana had the genome sequenced and due to this some DNA repair genes have been characterized. The aim of this work is to characterized two sugarcane cDNAs that had homology to AP endonuclease: scARP1 and scARP3. In silico has been done with these two sequences and other from plants. It has been observed domain conservation on these sequences, but the cystein at 65 position that is a characteristic from the redox domain in APE1 protein was not so conservated in plants. Phylogenetic relationship showed two branches, one branch with dicots and monocots sequence and the other branch with only monocots sequences. Another approach in order to characterized these two cDNAs was to construct overexpression cassettes (sense and antisense orientation) using the 35S promoter. After that, these cassettes were transferred to the binary vector pPZP211. Furthermore, previously in the laboratory was obtained a plant from nicotiana tabacum containing the overexpression cassette in anti-sense orientation. It has been observed that this plant had a slow development and problems in setting seeds. After some manual crossing, some seeds were obtained (T2) and it was analyzed the T2 segregation. The third approach used in this work was to clone the promoter region from these two cDNAs by PCR walking. The sequences obtained were analyzed using the program PLANTCARE. It was observed in these sequences some motives that may be related to oxidative stress response

A eros��o costeira e sua influ��ncia sobre a atividade petrol��fera: alternativas sustent��veis na mitiga����o de impactos ambientais

The study area consist in high sensitivity environments located on the northern coast of Rio Grande do Norte, Northeast Brazil. The barrier island are the main geomorphological features on the coastal landscape, being naturally instable and surrounded by industrial activities like oil fields, salt industry, shrimp farms and urban areas sometimes installed parallel to the coast, combined with coast engineering interventions. High energy hydrodynamic process are responsible for the morphological instability of the coast. The study was based on remote sensing data obtained between 1954 and 2007 which consist in orbital images from Landsat, CBERS and Ikonos satellites and aerial photos. With all data integrated on GIS environment it was possible to update thematic maps of geology, geomorphology, vegetation, soil and landuse and development of multitemporal maps pointing areas with erosion and depositions of sediments, defining the critical erosion process on this region. The bigger morphological changes are related to changes on wind patterns during the year, terrestrial and sea breezes during the day, with spits and barrier island migration, opening and closing of channels like the one parallel to the coast on the area of Serra and Macau oil fields. These factors combined with the significant reduction on sediment budgets due to the loss of natural spaces to sediment reworking contribute to the low resilience which tends to be growing on the area of Serra and Macau oil fields. In front of such scenery a detailed monitoring was done in order to find technological possibilities for coastal restoration. A pilot area was defined to start the project of mangrove restore together with beach nourishment in order to minimize the effect of the erosion caused by the channel parallel to the coast, contributing to stabilize the northeast channel as the main one. It s expected that such methodology will aid the coastal environments restoration and the balance between industrial activities and coastal erosion

A produ����o capitalista do espa��o: os loteamentos, os condom��nios fechados e o seu papel na forma����o do Bairro de Nova Parnamirim/Parnamirim-RN

This work exposed desired to investigate the function of evolution of closed allotment, of market of the earth and of forms of extraction of the lace of earth, in the processes capitalist production of urban space in Nova Parnamirim, community of Parnamirim/RN. This tendentious urbanization were marked for an expressive increase of number of horizontal and vertical closed residences joint ownership concerning at social groups more privileged financial position. Go after, set off, a temporal investigation, based in the forms of appropriation of space in the middle intermediate by action of the several producers agent of capitalist capital. This way, make necessary understand the past of local structure earth, in order that to make possible analyze the beginning of the process. Not enough, appealed the publics institutions as immobile notary s office and secretary municipal for to collect the more important information, and in the field through of application of formulary together the population of ward, in order that of examine the motivation of residential establishment inside. Make this, confirmed that the actual spatial organization of ward of Nova Parnamirim started of two allotments: the Vale do Pitimb�� Park and Eucaliptos Park, both divided in several little allotments. Before of begin the ward, allotments reproduced set off from that native has been consigned during the 80, 90 decade s and begin the actual century, resigning a complicated urban structure earth, dynamized by exploration of a promising residential area. Leashed of this, confirmed the installation of logic of segregation and auto-segregation conducted by an immobile market which exclude the poor class and absorb rich class, motivate by perspective of obtaining of urban lace of earth by immobile promoter. However, perceived that the growth this market was promoted by migration of groups of capital, interior of state and others regions of country. Not distant, horizontal and vertical closed residences represent production forms of a new form of residence, corresponding the pattern architectonic as socioeconomics, strengthened by ideal of security, quality of life, necessity of reclusion and of proximity of Natal. Is in the capital which this individual found possibilities of attend satisfactory minimum of yours necessity in relation a consumption of bens and specialized and specifics services. Before this qualitative perceive that the social and spacial differential of Nova Parnamirim was the responsible by soil and habitation valorization of ward, that reinforce the promotion of segregation and of auto-segregation, and consequently, of capitalist reproduction of urban space

Sobre pedras, entre rios: moderniza����o do espa��o urbano de Caic��/RN (1950/1960)

th��se de ma��trise, qui a ��t�� idealiz��e et ex��cut��e �� partir de la r��union et les relations dialogiques ��tablies entre la g��ographie et l'histoire, et l'espace et le temps, a consid��r�� l'environnement urbain comme le th��me g��n��ral et, comme la r��f��rence empirique, l'espace urbain de Caic��, incrust�� dans les terres semi-arides du Sert��o do Serid�� Potiguar, plus pr��cis��ment �� la mi-sud de l'��tat du Rio Grande do Norte. Dans cet espace, �� travers de recherche des fragments de m��moires acquis de diverses sources historiques, on a tent�� de faire des investigations sur les transformations urbaines qui ont eu lieu dans la ville au cours des ann��es 50 et 60 du XXe si��cle. Ces transformations, dans l espace urbain de Caic�� �� un moment du pic de l'activit�� de d��veloppement de coton, refl��taient et conditionnaient les propres projets de modernization urbaine qui repr��sentants des ��lites locales eurent con��u avec l'objectif de la construction d une ville id��al dans les regions isol��es du Serid��: moderne, civilis��, progressive et capitale r��gionale du Serid��. Pour cette construction, les nouveaux ��quipements et services urbains ont pass�� du plan imaginaire �� l espace r��el, install��s dans plusieurs quartiers de la ville en transformant le paysage urbain. Face �� cette situation, cin��mas, magasins, station de radio, ��nergie ��lectrique, institutions de l'��ducation, t��l��phonie, maison de soins infirmiers, usine de b��n��ficiement de coton, banques, politiques urbaines, hygi��niques et sanitaires, modes de comportement, sociabilit��s urbaines distincttes, parmi d'autres ��l��ments g��ographiques se sont institu��s �� travers la r��alisation de certains id��aux de progr��s social et dans un esprit de modernit�� urbaine, dans de nouveaux espaces et pratiques invent��s, tram��s et ��prouv��s sur les rochers et entre le cours d eau au milieu d'un quotidien urbain marqu�� par ruptures et permanence de certaines coutumes et habitudes antiques et de certains paysages et environnement rid��

Cidades pequenas, grandes problemas :perfil urbano do Agreste Potiguar

In view of the diversity and the heterogeneity of the existing cities in Brazil, our approach refers to the urban and non-metropolitan areas. Aiming to foment the studies on small cities e to apprehend the sociospatial configuration of the urban environment in such cities, this piece of work elaborates and analyzes the urban profile of the small cities of the Agreste Potiguar region, using as a theoretical reference landmark the production of the urban and regional space, from the decade of 1970 to 2000. Starting from this reference, this piece of work presents an urban sociospatial characterization of the small cities of the Agreste Potiguar region, with emphasis on the economic framework, on the population dynamics, on the main social data, culminating in the main characteristics of the local daily life. The study of the small cities of the Agreste Potiguar region makes it possible the comprehension of the problems that involve the cities of this size, above all, those inserted in economically fragile regions. In the analyzed period, the changes occurred in the productive structure of the State of Rio Grande do Norte triggered a great crisis in the economy of the Agreste Potiguar region. This aspect, allied to the insufficient performance of the public power, contributed to the sprouting of some sociospatial problems, amongst which may be distinguished: the economic fragility, the generalized unemployment, the lack of security and the urban infrastructure absence sufficient to take care of the social demand. Even facing the existing problems, the small cities must be seen as potential spaces, capable to promote the regional development. To do so, it is necessary a process of democratization of the public administration, an ample popular participation and the establishment of a new urban policy, that aims at the social promotion of the individuals, the guarantee of basic necessities and the access to the necessary services to a dignified life

A fun����o do centro regional no contexto da globaliza����o: o caso de Currais Novos/RNn

In this work we will analyze the function of the city of Currais Novos-RN front of four cities in its hinterland in the process of globalization, now set. Such cities are, Acari, S��o Vicente, Lagoa Nova and Cerro Cor��. We take the theoretical and territory division of labor that result while providing the articulation of cities in urban networks, and the tertiary sector, which holds the means for the articulation. Beyond the historical analysis and secondary database, the analysis of flows of materials and people between the cities above would, lay a greater diagnostic functions of the regional center of Currais Novos, and escape of the search as much of the spread of products

Fotografia e paisagens da modernidade : Currais Novos/RN de 1950 a 1980 / G��nison Costa de Medeiros

This dissertation promotes a dialogue between visual representation and the new cultural geography theory to critically examine the photography representation of an specific urban landscape. The interest here is to explore the ways in which the images of the city of Currais Novos - RN, captured by the photographer Raimundo Bezerra from 1950 to 1980, have taken a great part in shaping people s understanding and imagination of this city s modernizing process. What comes out of this work is the comprehension of that photography permites a geographical study of urban landscape as it can revel perceptions, imaginations, discourses e subjetivities which are based on especific urban cultural dreams and aspirations related to the case studied. So, the aim of this dissertation was to analyse how the discourse of modernity could be seen as part of and impregnated to the urban landscape of Currais Novos by Bezerra s photographs. Then, an intertextual, hermeneutic and phenomenalogical understanding of the geographic object and how it fits within the cultural context was fundamental

O processo de (re)produ����o do espa��o urbano de Nova Parnamirim

The public and private politics that was implemented in Natal, have always been attracting, great contingent of people in search of employments. However, not always, they can attend the migratory demands. Recently, Nova Parnamirim that is situated in the municipal district of Parnamirim - RN, due to proximity with Natal, it is passing for an intensive and accelerated occupation process impelled by the urban politics that created and they determined new diversities, leaning in the growth of the modern tertiary. In this context, Nova Parnamirim is suffering, along the time, substantial transformations in your espace, so much of nature social as environmental, that are affecting in the quality of your residents' life. This fact is mainly linked in the absence of an appropriate urban planning that have to be considered as an instrument norteador of the development of the city in its constant construction process. The study has as objective to analyze the social-space dynamics of the area and their implications, identifying the principal agents that promote and they benefit of that urbanization process. For the ccomplishment of this research it was executed bibliographical readings that turn of theoretical studies about the urban subjects and enviroments, besides field activities for the rising of the data investigated in the methodological approach

A Produ����o do espa��o das pequenas cidades do Serid�� Potiguar

The present research wants to comprehend the small towns process of production situated in the Serid�� Potiguar, under a historical perspective. Many were the ways passedthrough and the social agents involved in the organization of this space that is build in the treefold: cattle-breeding/cotton plantation/mining, giving origin to the firstcenters. Through the analysis of demographic, economical and social aspects we elaborate a small towns urban profile, considering the 80 s period until today. Those aspects reveal a town s systems with several characteristics and impossible to be insert in some table of reference. These elements are showed in the concentration of urban equipment in the distribution of economical opportunities and in the social connection that are made in the routine of each place. However, the analysis of production s process and special organization proportinated us an explanation of small towns reality, confirming its importance in the urban system, catching sight that, although the restrict urban functions presented, it confirms its towns character by organizing andadministratingthe life specific community

Territ��rio usado e transporte coletivo : mobilidade e acessibilidade no Bairro Lagoa Azul Natal/RN

Transport systems involved the use of territory in different Brazilian cities with regard to the occupation of road systems in urban areas. The implementation of systems engineering and transport infrastructure such as roads (roads), signs, stops, stations and complex road (bridges, viaducts and tunnels) are not used in the same way in the area. The subway is not even use the bus and vice versa. The time spent in travel, the time to access and the number of trips made by passengers in each way of transport is not the same. The use of transport systems in the territory, therefore, takes place through a whole in the current period we are in the technicalscientific and informational. This work addresses, however, the area used as a synonym of geographical area, analyzed by two categories of analysis, systems of objects formed by the fixed and the systems formed by the action flows. The system analyzed is the public transport by bus and population displacement that makes using this medium with source destination from home to work and has as empirical cut the Lagoa Azul located in the district administrative area north of Natal / RN. The general objective of this research is to understand the extent to which public transport has contributed to the socio-spatial accessibility of the residents of Barrio Blue Lagoon, located in Natal-RN, emphasizing the way home and the workplace. To reach the general objective of this dissertation, a study was made in light of the line which the methodological empirical facts, statistical data and theoretical knowledge of the events that occur in the quarter related to the Lagoa Azul economic aspects. Use for this, the concepts of mobility and Accessibility

As transforma����es fundi��rias da comunidade de siba��ma-rn com o advento do turismo

The genesis of the research emerges from reflection about the space dynamics of the capital and to the capital. The expansion and the incorporation of territory for capital reveal, in part, strategies of the capitalism production way, which shows the search for accumulation conditions, expanding the alternatives of territory use that is, nowadays, selective and uneven. The present work verified the mechanisms where the capital imposes its practices through the agrarian structure and the valuation of land market, meaning, in our knowledge, that the reproduction of inequalities is showed, many times, by the wide land speculation and the fast land valuation. For this, the snip space will be the Siba��ma community, belonging to Tibau do Sul district, located in Rio Grande do Norte state. It&#8223;s a rural area that has, gradually, changing through the advent of urban characteristics, given the association of public and private investments, both domestic and international. Through the empirical observations, inside the Siba��ma community, it was found expansion strategies, incorporation and appropriation of territory by capital. As a result of this practice, it&#8223;s occurring the land valuation and the presence of a process of socio-spatial segregation, through the encouraging the opening of new subdivisions, mainly for construction of second homes and tourism enterprises in order to meet the demand of a higher socioeconomic level. The areas still available in Siba��ma, constitute into a reserve of value for the achievement of capitalist rent, being a mechanism of capital reproduction. In this way, to studying the socio-spatial transformations, caused by spatial valuation, we turn to the project of social space designed by Santos(2006), from the perspective of capitalist production of space, by understanding the historical process of formation, the mechanisms and the actions of social actors that produce and consume space

Analise dos impactos socioambientais da instalacao das unidades de bombeio de petroleo na area urbana de Mossoro - RN

Conselho Nacional de Desenvolvimento Cient��fico e Tecnol��gico

Altera����es orofaciais em doen��as al��rgicas de vias a��reas

OBJETIVO: Apontar as poss��veis altera����es orofaciais decorrentes do sintoma obstru����o nasal em pacientes portadores de doen��as al��rgicas de vias a��reas superiores, por meio de revis��o de literatura. FONTES DE DADOS: Levantamento bibliogr��fico utilizando bancos de dados eletr��nicos, como Medline, Ovid, SciELO e Lilacs, com as palavras-chave asthma, rhinitis e mouth breathing, abrangendo os 30 ��ltimos anos. Foram inclu��dos artigos de revis��o, estudos observacionais e ensaios cl��nicos. S��NTESE DOS DADOS: A obstru����o nasal �� encontrada freq��entemente em doen��as al��rgicas de vias a��reas, como rinite e asma. A respira����o bucal decorrente da obstru����o nasal pode interferir de maneira direta no desenvolvimento infantil, com altera����es no crescimento do cr��nio e orofacial, na fala, na alimenta����o, na postura corporal, na qualidade do sono e no desempenho escolar. CONCLUS��ES: Devido �� variedade de altera����es orofaciais encontradas na crian��a respiradora bucal decorrente de obstru����o nasal por doen��as al��rgicas de vias a��reas, �� necess��rio realizar diagn��stico e tratamento precoces por uma equipe multidisciplinar, composta por m��dico, ortodontista e fonoaudi��logo, contemplando a vis��o de uma via respirat��ria ��nica, que traz conseq����ncias ao crescimento e desenvolvimento do sistema motor oral.

Preval��ncia de les��es em carca��as de bovinos de corte abatidos no Pantanal Sul Mato-Grossense transportados por vias fluviais

O objetivo deste estudo foi avaliar a influ��ncia do transporte fluvial na incid��ncia de les��es tissulares em carca��as de bovinos abatidos no Pantanal Sul Mato-Grossense, por meio da quantifica����o do n��mero e tamanho das les��es, bem como a identifica����o e determina����o da idade das les��es em fun����o do tempo ocorrido e a localiza����o dessas les��es nos principais cortes comerciais brasileiros. Apurou-se que, do total de 88 carca��as avaliadas, 83 (94,3%) tiveram uma ou mais les��es, totalizando 253 les��es que resultaram na remo����o de 39,988 kg de carne, com m��dia geral de 0,454 kg por animal. Com rela����o ao tamanho das les��es, as maiores m��dias foram encontradas em animais oriundos das condi����es I e II. Foi encontrada a maior m��dia em bovinos procedentes da condi����o II para a idade de les��es em carca��as. Foi constitu��da diferen��a na freq����ncia de les��es nos cortes comerciais nas condi����es avaliadas. Conclui-se que o sistema de transporte dos bovinos no Pantanal influenciou a incid��ncia de les��es. O aumento do tempo de transporte, associado �� longa dist��ncia e ao jejum, durante o manejo da fazenda at�� o frigor��fico, provocaram maior n��mero de les��es, por��m de menor tamanho.