scholarly journals Identificação de Estilos Fluviais na Bacia do Rio Macabu (RJ) a Serem Aplicados na Gestão dos Recursos Hídricos

2020 ◽  
Vol 13 (4) ◽  
pp. 1886
Author(s):  
Camila Ignez Santana ◽  
Mônica Dos Santos Marçal

A pesquisa foi desenvolvida na Bacia do Rio Macabu que integra a Região Hidrográfica IX do Baixo Paraíba do Sul e Itabapoana e, assim como várias regiões hidrográficas fluminenses, apresenta longo histórico de intervenções antrópicas dentro e fora dos canais fluviais. O objetivo do trabalho é apresentar mapeamento dos Estilos Fluviais identificados na Bacia do rio Macabu, considerando-se a dinâmica atual dos processos geomorfológicos e hidrogeomorfológico a serem aplicados na gestão dos recursos hídricos. O mapeamento e classificação dos segmentos dos rios e suas tipologias foram realizados com base na aplicação de parâmetros morfométricos, para a avaliação dos controles regionais e locais sobre a forma e o comportamento do rio, no confinamento do vale, na forma em planta de toda a extensão do canal e nas unidades geomorfológicas do fundo de vale. Os resultados mostram que a compartimentação do relevo possibilita a ocorrência de diferentes feições fluviais, exerce controle regional no sistema fluvial e tem influência sobre característica do vale. Dessa forma, a configuração espacial dos compartimentos determina os padrões de comportamento em cada setor. Foram identificados oito Estilos Fluviais cuja diferenciação entre os segmentos permite compreender como os processos e formas se caracterizam, integram e se distribuem dentro do sistema fluvial. De um modo geral, a bacia do rio Macabu se expressa como um ambiente múltiplo e complexo, com muitas problemáticas relacionadas aos seus usos e modificações. Os resultados representam parte dos subsídios necessários para uma gestão eficiente e eficaz e para a tomada de decisão. Identification of River Styles in the Macabu Basin (RJ) to be Applied in Water Resource Management A B S T R A C TThe research was developed in the Macabu Basin that integrates the Lower Paraíba do Sul and Itabapoana Hydrographic Region and, as well as several basin of fluminense hydrographic regions, presents a long history of anthropogenic interventions inside and outside channels. The objective of this present work is bringing forward mapping of the River Styles in the Macabu Basin to be applied in the management of water resources, considering the current dynamics of geomorphological and hydrogeomorphological processes. The mapping and the classification of river segments and their typologies were performed based on the application of morphometric parameters for the evaluation of regional and local controls on the river shape and behavior, valley confinement, river planform, channel length and valley bottom geomorphological units. The results show that the relief compartments allows the occurrence of different fluvial features, exerts regional control in the fluvial system and influences the valley characteristics. Thus, the spatial configuration of the compartments determines the patterns of behavior in each sector. Eight River Styles have been identified whose differentiation allows understanding how processes and forms are characterized, integrated and distributed within the river system. In general, Macabu Basin is a multiple and complex environment with many issues related to its uses and modifications. The results represent part of the inputs needed for efficient and effective management and decision-making.Keywords: Fluvial Geomorphoplogy; River Classification; Morphometric Index; Valley Setting. 

2018 ◽  
Vol 41 ◽  
Author(s):  
Peter DeScioli

AbstractThe target article by Boyer & Petersen (B&P) contributes a vital message: that people have folk economic theories that shape their thoughts and behavior in the marketplace. This message is all the more important because, in the history of economic thought, Homo economicus was increasingly stripped of mental capacities. Intuitive theories can help restore the mind of Homo economicus.


Author(s):  
Rebecca S. Bigler ◽  
Lynn S. Liben

Morality and gender are intersecting realms of human thought and behavior. Reasoning and action at their intersection (e.g., views of women’s rights legislation) carry important consequences for societies, communities, and individual lives. In this chapter, the authors argue that children’s developing views of morality and gender reciprocally shape one another in important and underexplored ways. The chapter begins with a brief history of psychological theory and research at the intersection of morality and gender and suggests reasons for the historical failure to view gender attitudes through moral lenses. The authors then describe reasons for expecting morality to play an important role in shaping children’s developing gender attitudes and, reciprocally, for gender attitudes to play an important role in shaping children’s developing moral values. The authors next illustrate the importance and relevance of these ideas by discussing two topics at the center of contentious debate in the United States concerning ethical policy and practice: treatment of gender nonconformity and gender-segregated schooling. The chapter concludes with suggestions for future research.


2002 ◽  
Vol 81 (2) ◽  
pp. 211-215 ◽  
Author(s):  
R.T. Van Balen ◽  
R.F. Houtgast ◽  
F.M. Van der Wateren ◽  
J. Vandenberghe

AbstractUsing marine planation surfaces, fluvial terraces and a digital terrain model, the amount of eroded rock volume versus time for the Meuse catchment has been computed. A comparison of the amount of eroded volume with the volume of sediment preserved in the Roer Valley Rift System shows that 12% of the eroded volume is trapped in this rift. The neotectonic uplift evolution of the Ardennes is inferred from the incision history of the Meuse River system and compared to the subsidence characteristics of the Roer Valley Rift System. Both areas are characterized by an early Middle Pleistocene uplift event.


2013 ◽  
Vol 37 (3) ◽  
pp. 422-431 ◽  
Author(s):  
William L. Graf

James C. Knox’s 1977 paper “Human Impacts on Wisconsin Stream Channels,” published in the Annals of the Association of American Geographers, was a key component of a suite of three papers by him defining the response of rivers to the introduction and management of agriculture and to climate change. In this paper he used the Driftless Area of southwest Wisconsin as a laboratory where he could define fluvial responses by their sedimentary signatures in floodplain deposits. Land-use records dating back to the early 19th century along with shorter climate records provided his understanding of the drivers of change. He found that floods increased as an outcome of land-cover change. Upstream tributaries became wider and shallower as coarse deposits limited their adjustments, while main stem channels became narrower and deeper. His paper reflected the influence of his graduate advisor and especially of prominent faculty colleagues at the University of Wisconsin from fields ranging from soils and climatology to geomorphology and history. The paper was the subject of considerable debate in the professional community, but it remains a much-cited example of Knox’s work in unraveling the Quaternary and Holocene history of rivers of the Driftless Area and by extension the upper Mississippi River system.


Author(s):  
Olga G. Klimova

The study is devoted to the analysis of research texts of the historiographic development of the history of entrepreneurship in pre-revolutionary Siberia. Modern historiography has accumulated a great deal of factual material. Historians have published monographs, thematic collections, articles, abstracts, reviews, reports, bibliographic indexes, encyclopedias and reference pub-lications, the councils defend candidate and doctoral dissertations on various problems in this area. The genre variety of scientific literature about business people reflects a broad professional and public interest in trade and other business activities and contributes to the coordination of research activities. Domestic historiography of the history of merchants and entrepreneurship in Siberia is represented by a significant number of works by historians of the region. The purpose of the study is to analyze the research text as a form of organizing speech material in the scientific discourse of studying the history of entrepreneurship in Siberia in the second half of the 19th – early 20th centuries. We use the methods of historical research, based on the analysis and generalization of research by other researchers, with the application of the principle of historicism, which made it possible to apply the historical-logical, historical-systemic methods. The region-oriented approach made it possible to study more fully the features of scientific texts in the historiography of the history of entrepreneurship in Siberia. The research results are as follows: scientific historical discourse is characterized by a certain set of norms, stereotypes of thinking and behavior; scientific communication plays a significant role in the life of society; genres act as a means of organizing and formalizing interaction in the scientific community; text as a form of organizing speech material in scientific discourse is characterized by the originality and recognizability of style, compositional structure.


2021 ◽  
Vol 40 ◽  
Author(s):  
Lizeth Paola Naranjo Jiménez ◽  
Myriam Adriana Muñoz Briceño ◽  
Ángela Suárez Castillo ◽  
Claudia Patricia Lamby Tovar ◽  
Sandra Janeth Gutierrez Prieto

Background: Amelogenesis imperfecta (AI) is a hereditary condition that affects the structure of tooth enamel and causes sensitivity, predisposition to cavities, and psychological problems. In Colombia, its frequency, magnitude, distribution, and behavior are unknown, so it is necessary to carry out prevalence studies to implement preventive actions. Purpose: To determine the prevalence of AI in patients who have attended the Pontificia Universidad Javeriana clinics in Bogotá. Methods: A retrospective cross-sectional observational study was carried out, whose sample included 1,394 medical records of patients who attended between January 2015 and December 2017. Results: The prevalence of AI was 0.6 %, corresponding to 8 people affected, 4 men and 4 women between the ages of 9 and 10 years. The most frequent phenotype was hypoplastic in 7 patients (87.5 %) and one person had a hypocalcified phenotype (12.5 %). Taurodontism was the most frequent anomaly in the 8 patients (100 %). Seven of the eight patients (87.5 %) had a family history of AI. All the individuals had a lower-middle socioeconomic level and came from urban areas. Conclusions: This study is the first approximation to determine the prevalence of AI in a group of the Colombian population. Although the prevalence was low, it is comparable with the findings of other studies.


2014 ◽  
Vol 11 (S308) ◽  
pp. 383-389
Author(s):  
M. A. Aragón-Calvo ◽  
Mark C. Neyrinck ◽  
Joseph Silk

AbstractThe star formation history of galaxies is a complex process usually considered to be stochastic in nature, for which we can only give average descriptions such as the color-density relation. In this work we follow star-forming gas particles in a hydrodynamical N-body simulation back in time in order to study their initial spatial configuration. By keeping record of the time when a gas particle started forming stars we can produce Lagrangian gas-star isochrone surfaces delineating the surfaces of accreting gas that begin producing stars at different times. These surfaces form a complex a network of filaments in Eulerian space from which galaxies accrete cold gas. Lagrangian accretion surfaces are closely packed inside dense regions, intersecting each other, and as a result galaxies inside proto-clusters stop accreting gas early, naturally explaining the color dependence on density. The process described here has a purely gravitational / geometrical origin, arguably operating at a more fundamental level than complex processes such as AGN and supernovae, and providing a conceptual origin for the color-density relation.


2021 ◽  
Vol 14 (4) ◽  
pp. 126
Author(s):  
Le Trung Kien

This article aims to clarify the basic contents of leader Ho Chi Minh's ideology, morality and style that are valuable to the Vietnamese nation. In fact, Vietnam has been proving the miraculous vitality of Ho Chi Minh's ideology on the path and goals of national development, on the strategy of great national unity and international solidarity, innovative thinking, culture and humanities. His moral example and views on revolutionary ethical standards and ethical practice principles are the red thread throughout the progress of progressive and civilized human development. His style is extremely lively, natural, unique, attractive, magical in daily activities and behavior, which is shown as independent, self-directed and creative thinking style; scientific, democratic and mass working style; modest, polite, sincere, warm, natural and flexible behavior style; simple, clean, moderate, moderate living style. These legacies form a consistent whole in Ho Chi Minh's people, have deep scientific, theoretical and practical values ​​in terms of ethics and aesthetics, consistent with the history of the Vietnamese nation and the development trend of mankind.


2020 ◽  
Vol 19 (4) ◽  
pp. 463-478
Author(s):  
Mai Duc Dong ◽  
Phung Van Phach ◽  
Nguyen Trung Thanh ◽  
Duong Quoc Hung ◽  
Pham Quoc Hiep ◽  
...  

The Simclast model has been verified and applied effectively in simulating the delta development for some major deltas in the world. In this study, we applied the model Simclast for simulating the history of the Red river delta development in late Pleistocene-Holocene. Results of the model reveal that the mainland of study area had reduced rapidly during transgression period (10,000-8,000 BP). The morphology changed significantly in the paleo-Red and Day river systems, but slightly in the paleo Thai Binh river system. The paleo-river network had been active in upper part before 11,000 BP and then shifted seaward until 2,000 BP. The river-sea interaction causes erosion and accumulation; as a result the morphology changed remarkably. The paleo-Thai Binh river had been inactive until 5,500 BP and then it was active but the morphology had not varied remarkably. The recent coastline generated from Simclast is relatively in accordance with the present coastline.


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