Dimensionamento de rede de distribuição de água tipo ramificada

O vídeo aborda conceitos de hidráulica, ressalta tópicos sobre pressões exigidas (dinâmica e estática) recomendadas pela norma, apresenta um caso prático de rede ramificada e finaliza com dimensionamento de todas as variáveis e equações pertinentes a esse cálculo.

Contributo para o estudo das macroalgas do intertidal da ilha da Madeira: diversidade, distribuição e sazonalidade

Ao longo de um ano (junho 2009 – maio 2010), estudou-se as comunidades de macroalgas do intertidal de quatro locais na costa sul (Reis Magos, Barreirinha,Cais do Carvão e Ribeira Brava) e quatro na costa norte (Porto da Cruz, Seixal,Praia da Laje e Porto Moniz) da ilha da Madeira. A área de estudo estendeu-se desde a linha de maré baixa até à zona superiordo intertidal. Identificou-se um total de 73 Taxa na ilha da Madeira: 1 Cyanobacteria, 35 Rhodophyta, 18 Ochrophyta e 18 Chlorophyta. No sul foram identificados 49 Taxa (17 exclusivos desta costa) e no norte 56 Taxa (24 exclusivos). Duas metodologias conjugadas permitem-nos caracterizar o coberto algal do Intertidal rochoso da ilha da Madeira: amostragem manual e trabalho em laboratório (trabalho mais detalhado e rigoroso) e análise de imagens digitais através de um programa informático específico (determinação de categorias ecológicas). Considerando as categorias ecológicas, o intertidal da ilha da Madeira é dominado por Musgo Calcário e Crosta não calcária. Duas espécies, Corallina elongata e Padina pavonica, são dominantes na ilha da Madeira e sete espécies são novos registos: Ganonema farinosum, Hypnea arbuscula, cf. Itonoa marginifera, Grateloupia dichotoma, Cystoseira wildpretii,Sargassum furcatum e Cladophora lehmanniana. As análises CLUSTER e nMDS determinaram a existência de semelhanças relativamente elevadas entre quatro locais de amostragem, no entanto verificou-se uma primeira diferenciação entre norte e sul. Existe uma desigualdade evidente do coberto algal entre as duas costas, com predominância de algas vermelhas e verdes no sul, contrastando com a maior ocorrência de algas castanhas no norte. Esta diferença poderá ser causada pela herbivoria (mais evidente a sul) e pelo hidrodinamismo (mais forte no norte). Verfificou-se que a exposição à ação das ondas é o principal fator responsável pela variação entre amostras (R=0,537, Sig.=0,1%).

Influência dos intermediários de distribuição de produtos turísticos no processo de decisão do meio de hospedagem pelo consumidor

This study examines the complex hotel buyer decision process in front of the tourism distribution channels. Its objective is to describe the influence level of the tourism marketing intermediaries, mainly the travel agents and tour operators, over the hotel decision process by the buyer-tourist. The data collection process was done trough a survey with three hundred brazilian tourists hosted in nineteen hotels of Natal, capital of Rio Grande do Norte, Brazil. The data analysis was done using some multivariate statistic techniques as correlation analysis, multiple regression analysis, factor analysis and multiple discriminant analysis. The research characterizes the hotel services consumers profile and his trip, and identifying the distribution channels used by them. Furthermore, the research verifies the intermediaries influence exercised over hotel buyer decision process, looking for identify causality relations between the influence level and the buyer profile. Verifies that information about hotels available on internet reduces the probability that this influence can be practiced; however it was possible identifying those consumers considers this information complementary and non-substitutes than the information from intermediaries. The characteristics of the data do not allow indentifying the factors that constraint the intermediaries influence neither identifying discriminant functions of the specific distribution channel choice by consumers. The study concludes that consumers don t agree in have been influenced by intermediaries or don t know if they have, still considering important to consult them and internet doesn t substitute their function as information source

Distribuição e abundância da malacofauna epibentônica no Parracho de Maracajaú, RN, Brasil

The mollusks present a great taxon variety and life habits in coral reefs being good environmental indicators. It is important to know the distribution pattern of the mollusks and the processes that influence it, so that disturbances in sea ecosystems could be monitored. The present study aims to accomplish the inventory and distribution of epibenthic mollusks in the Parracho of Maracajaú. 23 sites in different habitats of the Parracho were settled: 11 in the reef habitat, 3 in the sandy bottom and 9 in the seagrass bed. Qualitative and quantitative samplings have been done through snorkeling and scuba diving. Three band transects (10m²) were sampled in each site and the data were obtained to each m² of the transect, where the species were counted and the environmental variables (rugosity and recovery of the substratum) were valued. The data were submitted to multivariate analyses in order to find possible distribution patterns that could be associated to the substratum variables. The diversity indexes were calculated for each reef sites and compared with each other. A number of 46 species were registered. The reef habit at should to be the richnest area while the sandy bottom was poorest one. In the reef habitat, the mollusks were associated to rugosity and recovering of frondose algae and zoanthids, while for the seagrass bed, the animals exhibited a richness variation associated to the muddy and sandy sediment. There were found 3 species economically explored, what requires an appropriate management for the maintenance and conservation of the area resources in a sustainable way