خيارات البحث
النتائج 131 - 140 من 165
QUALIDADE DOS GRÃOS DE CAFÉ (Coffea arábica L.) EM COCO PROCESSADOS POR VIA SECA
2008
Rodrigo de Oliveira Simões | Lêda Rita D'Antonino Faroni | Daniel Marçal de Queiroz
The quality of coffee can be defined as a set of physical, chemical, sensory and security attributes that meet what the consumers want. The objective of this work was to evaluate and to compare the final quality of coffee produced by using the dry-process, using several procedures such as complete drying on cement terrace, suspended terrace, or their combination with mechanical horizontal rotary type driers. There was no significant change in the coffee quality obtained from any of the drying methods, however, it is known that the high percentage of cherry fruit, up from 90%, determined the high standard of quality of the drink and that this is influenced by the unripe fruits present in the product that cause undesirable fermentations and generate off-flavor.
اظهر المزيد [+] اقل [-]UMA CLASSIFICAÇÃO MORFO-ESTRUTURAL PARA DESCRIÇÃO E AVALIAÇÃO DA BIOMASSA DA VEGETAÇÃO DA CAATINGA
2008
Iêde de Brito Chaves | Vicente L. Lopes | Peter F. Ffolliott | Albanita Peixoto Paes-Silva
This work presents a simple classification method to describe and evaluate the Caatinga vegetation, one of the most fascinating biosystems of the Brazilian landscape, which has been intensively explored since colonial times. Associated to remote sensing techniques, this classification will be able to contribute as a method of reference of terrestrial control, facilitating the interpretation of space images in the inventory of vegetative cover, in studies associated with environmental monitoring and management. For a given biome of Caatinga, the Woody Vegetation Biomass Index (WVBI) is the product of the Height Index (HI) by Cover Index (CI) of vegetation. For a condition of maximum preservation the WVBI is equal to 1. By determining of a reference volume the Woody Vegetation Biomass Volume (WVBV) will be able to be estimated.
اظهر المزيد [+] اقل [-]STUDY OF LIMNOLOGICAL VARIABLES IN NURSERIES OF Colossoma macropomum (Cuvier; 1818) AND Pseudoplatystoma corruscans (Agassiz, 1829)
2008
Katia Santos Bezerra | Miguel Arcanjo Santos Neto | João Pereira Neto | Alfredo Oliveira Gálvez | Luis Otavio Brito
Ecosystem's aquatic metabolism comprises three main levels: production, consumption and decomposition. For the aquaculture fundament the knowledge and accompaniment of the biotic and abiotic factors for a sustainable production. The study evaluated the dynamics of variables limnologics in ponds: Colossoma macropomun (CM) and Pseudoplatystoma corruscans (PC), during a 24hs. The work was accomplished in the Station of Fish farming of Chesf, Paulo Afonso-BA. The variables oxygen (O2), temperature (T°C) and pH were measured every two hours, shines and transparency. Samples of water were analysis ammonia, nitrite, nitrate, inorganic and organic phosphate, total phosphors, chlorophyll a, identification of the plankton and phytobenthos were collected at 09:00, 15:00 and 21:00hs. All the variables physical-chemistries were inside of the ideal for culture species. The group phytoplankton most frequent no CM was Cyanophyta and Bacillariophyta. while in PC was Xanthophyta. The group phytobentic most frequent no CM was Xanthophyta, while in PC was Bacillariophyta. The group of Copepods was the most evident zooplankton in CM and there was absence of Rotifers in PC.
اظهر المزيد [+] اقل [-]DETERMINAÇÃO DA DENSIDADE BÁSICA DA MADEIRA DE GRANDIUVA D´ANTA (PSYCHOTRIA CF. SESSILIS (VELL.) MUELL. ARG.) AO LONGO DO FUSTE
2008
Robi Tabolka dos Santos | Alvaro Felipe Valério | Luciano Farinha Watzlawick | Raul Silvestre | Henrique Soares Koehler
The current work has as objective to determine and compare the variation of basic density of the wood throughout the stem of Psychotria cf. Sessilis, specie belonging to the Rubiaceae family and known popularly as grandiuva d'anta. The sample was performed in three selected trees at random in Dense Ombrophila Forest, in the municipality of Apiuna and Presidente Nereu Ramos - SC. The trees were knocked and they had its dendometric variables measured. The basic density was determined in samples 1,5 x 1,5 x 5 cm, taken from inside of the disc (cerne) and from the outside (alburno), being these collected next to chest (DAP), 0%, 10%, 50%,75%, 95% from the point of morphologic inversion, above this, two samples with branches named G1 and G2 were collected. The basic density was obtained through the relation between drought weight and green volume of samples and showing itself growing from the base to the top of the tree. In the analyze of variance's performance (ANOVA) was not able to be verified differences statistically significant between the averages in densities along the log and the branches, the average basic density was 0,426 g.cm3. The uniformity found to the basic density along the stem is a characteristic gives the specie stability and security for its use in structural projects, however it's needed deeper studies to better scientific fundaments of its physical and technological properties.
اظهر المزيد [+] اقل [-]ASPECTOS PRODUTIVOS DA ABACAXICULTURA FAMILIAR E COMERCIAL NO ESTADO DA PARAÍBA
2008
José Félix de Brito Neto | Walter Esfrain Pereira | Rosivaldo Gomes de Sá Sobrinho | José Alves Barbosa | Damon Pereira dos Santos
The pineapple in Paraíba, the fruitful of larger economical importance is considered, with an area planted with more 11.000 there are, and with one of the best productivities at national level, about 23 t/ha. This research was developed in six producing municipal districts in the State, located in the area of the Swamp and Zone of the Forest, in the months of May, June and July of 2006, with the objective to diagnose the process of production of the culture of the pineapple. The data were obtained through a structured questionnaire, approaching information on the productive and socioeconomic process of the culture, being 10 questionnaires for municipal district, which were maybe distributed to the and applied in a direct and individual way, approaching from the big to the small producer. The data were submitted to the analysis of frequency distribution and descriptive. It was verified that the pineapple of cultivating 'Pérola' was the favorite for the producing of small and big load, and most of the pineapple produced in the State he/she feels in the small production, the crop is made in a handmade way, and most of the time without application of powder-crop techniques. Good part of the producers doesn't receive technical attendance it publishes, nor matter.
اظهر المزيد [+] اقل [-]QUALIDADE DO MEL DE ABELHA PRODUZIDOS PELOS INCUBADOS DA IAGRAM E COMERCIALIZADO NO MUNICIPIO DE MOSSORÓ/RN
2008
Edna Maria Mendes Aroucha | Alan Jhon Fonseca de Oliveira | Glauber Henrique Sousa Nunes | Patrício Borges Maracajá | Maria Célia Aroucha Santos
This experiment had for objective to evaluate some parameters of quality of the bee honey (Apis mellífera L.) produced by IAGRAM and commercialized in the city of Mossoró-RN. For this, 19 honey samples had been collected in the local market, these were analyzed, in the Chemistry Laboratory of the Universidade Federal Rural do Semi-Árido (UFERSA), how much to the color, humidity, total acidity, reducing sugars, apparent sucrose and diastase activity. It was utilized districted statistics for analysis of date, with shunting line standard, reliable interval and distribution of frequency. The honeys sample presented the colors clearly extra amber (5,2%), amber (5,2%) and dark amber (89,4%). The honey samples presented normal standard established for the Brazilian Legislation as humidity percentage (14,3 18.6%) and reducing sugars (66,9 75.0%). About 5,2% and 42% of the analyzed honey samples, not presented, respectively, apparent sucrose content and total acidity, as the standard established for commercialization as floral honey. The diastase activity was remained inside of the quality standard.
اظهر المزيد [+] اقل [-]DIVERGÊNCIA GENÉTICA ENTRE ACESSOS DE MAMONA EM DEZ MUNICÍPIOS DE ALAGOAS
2008
Marcelo Cavalcante | Stênio Lopes Paixão | Paulo Vanderlei Ferreira | José Antônio da Silva Madalena | João Gomes da Costa
Aiming to evaluate the genetic divergence among castor bean accessions through collections of racemos with seeds of ten municipalities in the State of Alagoas in the year 2007. The variables were analyzed: weight of 100 seeds (W100), weight of the 100 seed coats (WC100); transversal (TLS) and longitudinal lengths of the seed (LLS); raceme length (LR); e content oil of the seeds (OCS). For the evaluation of genetic divergence was used the principal components analysis and the cluster were made using the Tocher method. Phenotypic correlations between the variable and the altitude (ALT) of the collection places were also carried through. Exist significant divergence between the accessions, indicated for the two first principal components, that explained 82.15% of the existing variability. The variables W100 and WC100 were those that more contributed for the observed divergence. Four groups were formed by Tocher' methodology, showing possibilities of future works to explore the variability found in castor bean accessions. The correlations were positive between some variables, like the altitude, that seems to have especially influenced the W100 variable, but not on OCS.
اظهر المزيد [+] اقل [-]GERMINAÇÃO DE SEMENTES DE ALBÍZIA (ALBIZIA LEBBECK (L.) BENTH) EM FUNÇÃO DA LUZ E DO REGIME DE TEMPERATURA
2008
Alek Sandro Dutra | Sebastião Medeiros Filho | Fábio Oliveira Diniz
The albizia is a species arbores of the Leguminosae - Mimosoideae family (Momosaceas), native of Tropical Asia and characterized for presenting a speed growth, ability to fix nitrogen and to improve the structure of earth, especially in areas degraded, having uses multiples and facility to co associate with cultures agricultural. The research was lead in two experiments with the objective of to identify methods to superation of dormancy in seeds of albizia and to verify the effect of light and temperatures in germination of this species. In first the seeds were submitted the twelve methods to superation of dormancy: humid heat, immersion in hot water, immersion in sulfuric acid, and escarification mechanic, beyond of the witness, being determined the percentage of germination of seeds seard and deceased. In second experiment, after treatment with sulfuric acid for 10 minutes, the seeds were sowed in tabledoch paper type Germitest and put to germinate under nine combinations: continue light and constant temperature of 25oC; continue light and constant temperature of 35oC; continue light and alternated temperature (35oC/8h and 25oC/16h); dark continue and constant temperature of 25oC; dark continue and constant temperature of 35oC; dark continue and alternated temperature (35oC/8h and 25oC/16h); alternance of light (light/8h and dark/16h), 25oC; alternance of light (light/8h and dark/16h), 35oC and alternance of light and temperature (light/35oC/8h and dark/20oC/16h). Conclusion the specie Albizia lebbeck presents seeds dormancy, detach-itself the escarification mechanic and the sulfuric acid as efficient methods to the superation of dormancy; the seeds of albizia are insensitive to the light and your germination was not influenced by the temperatures useds.
اظهر المزيد [+] اقل [-]GERMINAÇÃO DE SEMENTES DE Hyptis suaveolens (L.) POIT. (LAMIACEA) EM FUNÇÃO DA LUZ E DA TEMPERATURA
2008
Sandra Sely Silveira Maia | José Eduardo Brasil Pereira Pinto | João Almir de Oliveira | Francisco Nildo da Silva | Fúlvia Maria dos Santos
This work aimed to evaluate the influence of light and temperature on germination of Hyptis suaveolens seeds. The seeds were harvested at Mossoró/RN city and the experiment developed in at the Laboratory of Seed Analysis of the Department of Agriculture of the Federal University of Lavras at Lavras/MG. The treatments was consisted of four temperatures (20ºC, 25ºC, 30ºC and 20-30ºC) and two light conditions (light and darkness). The treatments consisted of 200 seeds, with four repetitions of 50 seeds each, sown on a two Germitest towel paper, displayed inside gerbox, and maintained for 30 days in germination chamber. A completely randomized constituted design with 2x4 factorial design (two light expositions x four temperatures) was used with 4 replicates of 50 seeds. The Scott-Knot¿s Test at 5% of probability was used to compare the obtained averages. There was significant difference in the interaction temperature x shines, in the two variables. It can be concluded that the largest germination of seeds happened in the light presence and in high temperatures. And that the temperatures alternated of 20-30ºC, 30ºC and 25ºC are favorable for germination of seeds of Hyptis suaveolens.
اظهر المزيد [+] اقل [-]CRESCIMENTO E DISTRIBUIÇÃO ESPACIAL DE Croton urucurana BAILL. EM DOURADOS-MS
2008
Elma Oliveira Alves | José Hortêncio Mota | Thelma Shirlen Soares | Maria do Carmo Vieira
The aim of this study was to evaluate the growth and spatial distributions of Croton urucurana (sangra-d`água) in Dourados-MS. They had been marked, using systematic systematic sampling, 15 plots of 100 m2 in which had been identified all individuals of Croton urucurana that they had been to classified phase of development in young, youthful and adult. To classify the species in the spatial patterns the Payandeh index was used. It was verified 943 individuals with aggregate spatial distribution in the area in study. C. urucurana is in regeneration process with has predominance of young and youthful individuals, 54.1% and 28.4%, respectively, in relation to the adult individuals (17.5%).
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