de Paula A.,UESB |
Soares J.J.,Federal University of São Carlos
Floresta | Year: 2011
This work aimed to analyze horizontal structure of arboreal vegetation from a "tableland" forest. A phytosociological sample was carried out on 100 contiguous plots of 10 × 10 meters. We sampled the individuals with PBH ≥ 15 cm, built up the diametric distribution and estimated spatial species distribution pattern. We sampled 1519 individuals, which were distributed into 265 species, 138 genera and 44 families. Shannon's Index (H') was estimated at 4.87 nats/ind. Species with the highest IV were Rinorea bahiensis (Moric.) Kuntze, Eriotheca macrophylla (K. Schum.) A. Robyns and Sterculia speciosa K. Schum. In relation to ecological groups, the late secondary species obtained CV and IV, twice as much as the early secondary ones. Pioneers presented truncated diametric distribution, as long as the early secondary had a broader one. Shadow tolerant species predominance reinforces that successional stadium is advanced. It had been found 10 species with aggregated spatial distribution and 29 random ones.
Maia L.R.,State University of Southwest Bahia |
Ciencia Rural | Year: 2012
The health and safety at work are important and might be considered as essential and relevant for all productive sectors, including agribusiness, specifically in the milk chain production. This paper presents the results of an environment work conditions analysis in a milking sector at southwest region of Bahia State. The study aimed to identify the occupational risks (physical, chemical, biological, ergonomic and accidents), as well as aspects related to food hygiene. The research consisted in a case study with qualitative and exploratory characteristics, aiming to observe and report the real conditions identified in the work environment and comparing with the current legislation. It was diagnosed predominantly ergonomic and accident risks, as well as irregular sanitary conditions that can result in biological risks. It was not found chemical or physical risks in the sector. Facing the results, it was proposed some recommendations involving issues related to organizational conditions, by offering training on operational procedures and health and safety at work.
Pires A.J.V.,DTRA |
De Carvalho G.G.P.,Federal University of Bahia |
Revista Brasileira de Zootecnia | Year: 2010
Chemical treatment of roughage has been the aim of studies for a long time. However, until nowadays, many questions are arisen due to the efficiency of additives used in relation to the variation of answers, either in nutritive value of treated roughage or in performance of animals feed with diet containing such roughage. This revision will approach the main and most used products, which are anhydrous ammonia, urea, sodium hydroxide and calcium oxide. It has been noticed that ammonization (both for anhydrous ammonia and urea) has presented more efficient result in animal's performance when compared with sodium hydroxide or calcium oxide. However, regarding its nutritive value, both sodium hydroxide and calcium oxide have presented a higher efficiency in the decreasing of cell wall and in the increase of treated roughage' digestibility. © 2010 Sociedade Brasileira de Zootecnia.
De Novaes A.B.,UESB |
Silva H.F.,Federal University of Lavras |
Sousa G.T.O.,University of Brasilia |
De Azevedo G.B.,University of Brasilia
Floresta | Year: 2014
The present research aims to evaluate the quality of Indian Lilac (Azadirachta indica A. Juss) seedlings in different containers in order to obtain higher productivity in the field. It was established four treatments: T1 - Plastic bags (382 cm3); T2 - Plastic bags (165 cm3); T3 - Tubes (288 cm3) and T4 - Tubes (55 cm3). The experiment was developed in three different stages. The first one consisted on the production and morphological evaluation of the seedlings, seeking to evaluate the variables: stem height (H), root-collar diameter (D), ratio H/D and weights of fresh and dry matter of the stem, root and total. The second stage aimed at evaluation of root regeneration potential (RRP) of seedlings, and the third phase was developed in the field in order to evaluate seedlings survival after planting and their performance by measurement of the height and diameter at the soil level. The seedlings of Indian Lilac produced in plastic bags (382 cm3) presented superior values in all evaluated morphological parameters and improved performance in the field, 15 months after the planting. The RRP has proved a reliable parameter on the field performance of seedlings produced in tubes of 288 cm3.
Hojo E.T.D.,São Paulo State University |
Durigan J.F.,São Paulo State University |
Revista Brasileira de Fruticultura | Year: 2011
The objective of the study was to evaluate the effectiveness of a modified atmosphere, by the use of plastic covers packaging and chitosan coverage in lychee postharvest storage. The experimental design was completely randomized in a factorial 5 x 7, with 3 replications, where the first factor corresponds to the treatments: control; rigid polystyrene trays (22.4cm x 14.8cm) coated with a 0.015mm (PD955) polyolefin film (PF); 500ml transparent rigid polyethylene terephthalate (PET) trays with lid; polystyrene trays covered with 0.014mm polyvinyl chloride (PVC) film; and immersion in 0.5% chitosan. The second factor was the storage time, 0 (initial), 4, 8, 12, 16, 20 and 24 days at 5 ° C, 94% RH. Each plot consisted of eight fruits, and those treated with chitosan were placed in rigid polystyrene trays without film. The results showed that the modified atmosphere reduced significantly the mass loss of fruits stored under refrigeration, especially with PVC film. Chitosan 0.5% proved to be more effective in maintaining the red color and preventing browning, keeping the fruits more attractive.
Bergamaschi F.B.,UESB |
Santiago R.H.N.,Federal University of Rio Grande do Norte
IEEE International Conference on Fuzzy Systems | Year: 2013
In this paper it is defined the concept of strongly prime fuzzy ideal for noncommutative rings. Also, it is proved that the Zadeh's extension preserves strongly fuzzy primeness and that every strongly prime fuzzy ideal is a prime fuzzy ideal as well as every fuzzy maximal is a strongly prime fuzzy ideal. © 2013 IEEE.
Cerqueira P.H.A.,UESB |
Floresta | Year: 2013
This study was conducted in sawmills in Eunápolis, Bahia, in order to survey the work ability of employees of sawmills. To evaluate the profile of workers a questionnaire was designed as an interview. To evaluate the ability to work, we used an adapted version for use in Brazil of the work ability index, a questionnaire that evaluates the ability to work from the worker's own perception. The population studied comprised four sawmills, a total of 32 workers. It was observed that employees were entirely male, mean age 31 years and time function of 7.8 years. The evaluation of the ability to work, the ICT average showed value of (37). The minimum values was of 23 and maximum value was 46. It was possible to observe a statistical difference in the Tukey test at 5% of the samples when stratified by age, revealing a decline of ICT in increasing order of age. Among the measures recommended for the study is the support of maintaining the index, through interference in management aimed at not only increasing the productive capacity of the employees but also the quality of life.
Andrade A.O.,Federal University of Rio Grande do Norte |
Trindade R.M.P.,UESB |
Maia D.S.,UESB |
Santiago R.H.N.,Federal University of Rio Grande do Norte |
Guerreiro A.M.G.,Federal University of Rio Grande do Norte
Journal of Intelligent and Fuzzy Systems | Year: 2014
The fuzzy mathematical morphology extends the binary morphological operators to gray-scale and coloured images using concepts of fuzzy logic. To define the morphological operators of fuzzy erosion and dilatation it is used the implications and conjunctions respectively. This work presents an analysis of some R-implications to verify if the pairs of implications and T-norms (conjunctions) were adjunctions. It was used a fuzzy application developed in the Matlab for implementation and tests with the respectively results. © 2014 - IOS Press and the authors. All rights reserved.
Willers C.D.,UESB |
Rodrigues L.B.,UESB |
da Silva C.A.,Federal University of Rio Grande do Norte
Producao | Year: 2013
The Life Cycle Assessment (LCA) is a methodology for evaluating the environmental impact of products and production systems, under the cradle to grave approach, namely, since the acquisition of raw materials to final disposal of materials. This work proposed to investigate the progress of the LCA studies in Brazil. A bibliographic research was performed on official or recognized scientific events and journals from the "Associação Brasileira de Engenharia de Produção" and SciELO Brazil Database. It was identified 80 articles, most of them from institutions of the South and Southeast Brazilian regions. The" Universidade de São Paulo" (USP) and the "Universidade Federal de Santa Catarina" (UFSC) had the largest number of publications among the 50 institutions identified. It was found that 17 articles effectively applied LCA methodology in a case study, and 11 used the methodology to evaluate the production process and 6 to compare materials or processes. © Willers, C. D. et al.
Boone Bergamaschi F.,UESB |
Santiago R.H.N.,Federal University of Rio Grande do Norte
Proceedings of the 2013 Joint IFSA World Congress and NAFIPS Annual Meeting, IFSA/NAFIPS 2013 | Year: 2013
The main goal of this paper is to investigate the properties of fuzzy ideals of a ring R. It provides a proof that there exists an isomorphism of lattices of fuzzy ideals when ever the rings are isomorphic. Finite-valued fuzzy ideals are also described and a method is created to count the number of fuzzy ideals in finite and Artinian rings. © 2013 IEEE.