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Registros recuperados: 63
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A new vision of the origin and the oocyte development in the Ostariophysi applied to Gymnotus sylvius (Teleostei: Gymnotiformes) Neotropical Ichthyology
França,Gisleine Fernanda; Grier,Harry J.; Quagio-Grassiotto,Irani.
Based on new knowledge coming from marine perciform species, the origin of oocytes and their development in the Ostariophysi, Gymnotus sylvius is described. In both Gymnotus sylvius and marine perciform fish, oogonia are found in the germinal epithelium that forms the surface of the ovarian lamellae. At the commencement of folliculogenesis, proliferation of oogonia and their entrance into meiosis gives rise to germ cell nests that extend into the stroma from the germinal epithelium. Both cell nests and the germinal epithelium are supported by the same basement membrane that separates them from the stroma. At the time of meiotic arrest, oocytes in a cell nest become separated one from the other as processes of prefollicle cells, these being derived from...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Folliculogenesis; Primary growth; Secondary growth; Maturation; Ovulation.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000400008
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Características físicas da fibra e do fio dos algodoeiros arbóreo e herbáceo em melhoramento no Nordeste do Brasil. Infoteca-e
SANTANA, J. C. F. de; FREIRE, E. C.; CARVALHO, L. P.; COSTA, J. N. da; GUSMAO, J. L. de; SILVA, J. A. da.
bitstream/item/33284/1/CARACTERISTICAS-FISICAS-DA-FIBRA.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Caracteristicas fisicas; Fio; Cultivar; Finura; Tenacidade; Alongamento; Arboreo; Herbaceo; Brasil; Nordeste; Pernambuco; Caruaru; Paraiba; Itaporanga; Patos; Riacho dos Cavalos; Ceara; Iguatu; Piaui; Eliseu Martins; Annual; Perennial; Upland; Physical; Properties; Yarm; Fiber; Strength; Maturation; Breaking; Elongation; Rupture.; Algodão; Comprimento; Fibra; Gossypium Hirsutum; Melhoramento; Mocó; Maturidade; Resistência; Surubim.; Sousa; Fineness; Cotton; Breeding; Length..
Ano: 1989 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/262827
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Characterization and development of marolo (Annona crassiflora, Mart.) Ciênc. Tecnol. Aliment.
Silva,Edson Pablo da; Vilas Boas,Eduardo Valerio de Barros; Xisto,Andreia Luiza Pereira Ramos.
The objectives of this study was the physical, chemical, and physiological characterization of marolo (Annona crassiflora, Mart.) during its development. The fruits were harvested 12 Km off Itumirim, Southern Minas Gerais, Brazil, at 20-d intervals from anthesis to fruit maturity. The first fruits were harvested within 60 days. The total development of the fruit took 140 days starting from anthesis. At 140 days after anthesis, the fruit reached its maximum size, with mass of 1.380g, transverse diameter of 13.0 cm, and longitudinal diameter of 11.5 cm. During its development, the fruit showed increase in mass and in traverse and longitudinal diameters. The changes during maturation and ripening, such as: pH reduction and starch degradation, pectic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antioxidants; Growth; Maturation.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612013000400011
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Chlorophyll fluorescence of the testa of Brassica oleracea seeds as an indicator of seed maturity and seed quality Scientia Agricola
Jalink,H.; Frandas,A.; Schoor,R. van der; Bino,J.B..
Chlorophyll fluorescence of the testa of seeds is proposed as a non-invasive method for the determination of maturity and quality of seeds. In this study cabbage seeds (Brassica oleracea) were sorted individually based on the chlorophyll fluorescence signals into four subsamples labeled with respect to their chlorophyll fluorescence signal (low, medium, high and very high). The results show that the magnitude of the chlorophyll fluorescence signal was inversely related to the quality of the seeds, expressed as germination %, normal seedling %, germination rate (T50) and uniformity of germination (T75-T25). The seed lot could be improved from 90 to 97% normal seedlings by sorting out 13% of the seeds with very high chlorophyll fluorescence signals....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Maturation; Chlorophyll fluorescence; Cabbage seed; Sorting; Quality.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161998000500016
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CLASSIFICATION OF MACAW PALM FRUITS FROM COLORIMETRIC PROPERTIES FOR DETERMINING THE HARVEST MOMENT REA
Costa,Anderson G.; Pinto,Francisco de A. de C.; Motoike,Sérgio Y.; Braga Júnior,Roberto A.; Gracia,Luis M. Navas.
ABSTRACT Macaw palm (Acrocomia aculeata) is a promising crop for biofuel production due to the high concentration of its fruit oil, but the harvest date is an issue to be better understood so it could be cultivated on an industrial scale. The aim of this study was to use the colorimetric properties of the macaw palm fruits to develop a neural network classifier to determine the ideal moment for harvesting, based on the oil content of the fruit mesocarp. During nine weeks of maturation were sampled 900 fruits of macaw palm fruits and the colorimetric properties of the RGB, HSI and CIELab color models were used to classify the fruits into immature and mature fruits. Kappa index and the overall accuracy values were used to access the classifier performance....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Digital images; Maturation; Neural networks; Oil content.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000400634
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Composition and microbiological analysis for quality evaluation of Kars Gravyer cheese: influence of ripening period Ciênc. Tecnol. Aliment.
ÇETİNKAYA,Asya; ÖZ,Fatih.
Abstract In this study; The objective is to demonstrate the total quality of the chemical and microbiological aspects of the Kars Gravyer cheese during the ripening period, produced by means of traditional method in dairy conditions. Production of Kars Gravyer cheese was performed in two replications. Titratable acidity (%l.a), salt content, total protein ratio, dry matter, fat content, dry matter in fat and dry matter in salt, total nitrogen and lipolysis rate content were determined by taking samples from the produced cheeses on specific days (day 0, 10, 25, 45, 60 and 90) and microbiological analyses were performed. By analysis the results of the Kars Gravyer cheese samples; significant changes in acidity, dry matter, salt, total nitrogen, protein, fat...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gravyer cheese; Maturation; Quality; Food analysis; Food composition.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000401052
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Croissance, engraissement et cycle sexuel de Crassostrea gigas dans le Bassin d'Arachon: comparaison des huîtres agées de 1 et 2 ans ArchiMer
Maurer, Daniele; Borel, Michel.
Two-year-old oysters have a physiology which is reproduction-oriented, their maturation occurring synchronously among oysters from the same batch. The importance of the spring accumulation of glycogenated stocks varies through the years and correlates with the growth stage. Glucidic components are quickly used during the month preceding egg-laying and are transformed into lipid stocks for the oocytes. One-year-old oysters develop at different rates, some of them not showing any sign of maturation and the percentage of laying individuals varies through the years. Glycogenated stocks accumulate in a similar way in both age-classes and their more precocious and more intense use by young molluscs is not necessarily linked with their gametogenesis and growth,...
Tipo: Text Palavras-chave: Bay of Arcachon; Maturation; Biochemistry; Crassostrea gigas; Bassin d'Arcachon; Maturation; Biochimie; Crassostrea gigas.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-6182.PDF
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Defining the reproductive period of freshwater fish species using the Gonadosomatic Index: a proposed protocol applied to ten species of the Patos Lagoon basin Neotropical Ichthyology
Fontoura,Nelson Ferreira; Ceni,Gianfranco; Braun,Aloisio Sirangelo; Marques,Camilla da Silva.
ABSTRACT This contribution records the reproductive periods of ten dominant freshwater fish species from the Patos Lagoon and Guaíba Lake (Astyanax fasciatus, Cyphocharax voga, Hoplias malabaricus, Oligosarcus jenynsii, Oligosarcus robustus, Hoplosternum littorale, Loricariichthys anus, Parapimelodus nigribarbis, Trachelyopterus lucenai, Pachyurus bonariensis). Data were derived from monthly samples in Casamento Lake (northern Patos Lagoon; Nov. 2002 to Apr. 2004) and Guaíba Lake (Jun. 2005 to May 2006). The reproductive period was determined according to the monthly variation of the gonadosomatic index (GSI). Fish reproduction was identified during all months of the year. Oligosarcus jenynsii started reproduction in winter, but extended spawning to spring...
Tipo: Info:eu-repo/semantics/article Palavras-chave: GSI; Maturation; Maturity Criteria; Reproductive Cycle.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000200210
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Design of waste stabilization ponds for dairy processing plants in Uganda CIGR Journal
Menya, Emmanuel; Wangi, G. M.; Amanyire, F.; Ebangu, B..
Waste stabilization ponds (WSP) were designed to treat 287.5 m3 day-1 of wastewater generated from processing of 100 m3 of milk per day.  The design involved use of existing models including those developed by Mara to size the anaerobic, facultative and maturation ponds.  The design temperature was 250C.  The anaerobic pond was designed based on volumetric organic loading rate while facultative pond was designed based on surface loading rate.  On the other hand, the maturation pond was designed based on the number of coliform bacteria removed per 100 mL of wastewater.  The anaerobic pond was designed to remove 70% BOD, facultative pond-75% and maturation pond-25% BOD.  In addition, the maturation pond was designed to have a coliform bacteria removal...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dairy; Waste stabilization ponds; Anaerobic; Facultative; Maturation; Uganda.
Ano: 2013 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2388
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Dinâmica da reprodução do cascudo, Rineloricaria latirostris Boulenger (Siluriformes, Loricariidae) do rio Passa Cinco, Ipeúna, São Paulo Zoologia
Barbieri,Geraldo.
Aspects of reproduction of Rineloricaria latirostris Boulenger, 1899 of Passa Cinco river (Ipeúna, São Paulo) were investigated during 18 months. The spawing period was determined by the analysis of the maturation curve, based of the monthly variation of the gonadosomatic index and condition factor. The size and age on the maturation and fecundity were also determined. The fecundity was realted to some parameters such as total length and total weight.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Reproduction; Dynamics; Maturation; Fecundity.
Ano: 1994 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751994000400003
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Ecophysiologie de la maturation sexuelle et de la ponte de l'huître creuse Crassostrea gigas : réponses métaboliques (respiration) et alimentaires (filtration, absorption) en fonction des différents stades de maturation ArchiMer
Soletchnik, Patrick; Razet, Daniel; Geairon, Philippe; Faury, Nicole; Goulletquer, Philippe.
The study of sexual maturation and spawning in the Pacific oyster (Crassostrea gigas) is part of a vast research programme that endeavours to understand the causes of mortality that occur sporadically during the spring and summer seasons in the Marennes-Oléron Bay. Thermal and diet conditioning were used to obtain oysters at each stage of maturity simultaneously. Using the measured rates of clearance, consumption, absorption and respiration provided estimates of growth potential and gave the energetic budget of oysters at different stages of sexual maturity. Physiological responses were similar for males and females. Filtration decreased from 2.4 to 2.6 l.h (-1) to 1.8 l.h (-1) with increasing maturity. Weight gain was associated with gonad development and...
Tipo: Text Palavras-chave: Ponte; Maturation; Crassostrea gigas; Ecophysiologie.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/1997/acte-3251.pdf
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Ecophysiologie de la maturation sexuelle et de la ponte de l'huître creuse Crassostrea gigas : réponses métaboliques (respiration) et alimentaires (filtration, absorption) en fonction des différents stades de maturation ArchiMer
Soletchnik, Patrick; Razet, Daniel; Geairon, Philippe; Faury, Nicole; Goulletquer, Philippe.
The study of maturation and spawning of the oyster is part of a research program to investigate the summer mortalities of the oysters, Crassostrea gigas in Marennes-Oléron Bay. Four maturity stages were simultaneously obtained by diet and thermal conditioning (immature, low maturation, mature and post-spawning stages). Measurements of clearance, filtration, absorption and respiration rates allowed a calculation of the scope for growth and hence an estimation of the oyster's energetic budget at various maturity stages. Male and female oysters had similar physiological responses. The filtration rate ranged from 2.4 to 2.6 1.h(-1) at the early stages of maturation and decreased to 1.8 1.h.' during the maturity stage. Growth rate resulting from gonad...
Tipo: Text Palavras-chave: Huître; Crassostrea gigas; Conditionnement; Maturation; Filtration; Absorption; Respiration; Oyster; Crassostrea gigas; Conditioning; Maturation; Filtration; Absorption and respiration rates.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/1997/publication-3090.pdf
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Efeito do estádio de maturação do fruto sobre a qualidade da semente do guaranazeiro. Infoteca-e
CARVALHO, J. E. U. de; KATO, A. K.; FIGUEIREDO, F. J. C..
bitstream/item/33958/1/CPATU-CirTec43.pdf
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Belem; Pará; Brasil; Seed; Harvest; Fruit; Maturation; Emergency.; Colheita; Emergência; Fruta; Guaraná; Maturação; Paullinia Cupana; Semente.; Amazonia..
Ano: 1983 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/382822
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Efeitos do ethephon e do anelamento sobre a maturação e qualidade da uva cultivar Red Globe. Infoteca-e
LEAO, P. C. de S.; ASSIS, J. S. de.
O presente experimento teve como objetivo os efeitos do anelamento e do ethephon sobre a maturação e a qualidade da uva de mesa Red Globe, cultivada sob irrigação no Vale do São Francisco.
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Variedade Red Globe; Vale do Sao Francisco; Maturation; Quality; Variety; Grape.; Uva; Anelagem; Etefon; Irrigação; Maturação; Qualidade.; Grapes.; Ethephon.
Ano: 1997 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/133462
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Effect of Californian Red Worm (Eisenia foetida) on the Nutrient Dynamics of a Mixture of Semicomposted Materials Chilean J. Agric. Res.
Castillo,Hugo; Hernández,Adriana; Dominguez,David; Ojeda,Damaris.
The efficiency of composting processes with and without the addition of Californian red worms (Eisenia foetida) was evaluated, using manure of dairy cows to generate organic fertilizer. Several parameters were assessed as physio-chemical indicators of maturity, such as temperature, pH, C/N ratio, phytotoxicity and macro and micronutrients at 25 and 54 ws (mature and stored products, respectively). A linear model was used in the statistical analysis, with four replicates that included as fixed effects, the composting systems and time. At 25 wk, both systems reduced the C/N ratio to values of 15.5 in vermicompost and 17.1 in semi-compost. The content of total N, N-NO3, Ca and some micronutrients also increased. K and Na concentrations were higher in the...
Tipo: Journal article Palavras-chave: Fertilizer; Organic; Maturation; Stability.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000300014
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Effect of harvesting time on seed physiological quality, chemical composition and storability of soybeans Scientia Agricola
Marcos-Filho,J.; Chamma,H.M.C.P.; Casagrande,J.R. R.; Marcos,E.A.; Regitano-d'arce,M.A.B..
Soybeans IAC-8 were harvested in the growth stages R7 and R8 commercial harvesting time and at two other subsequent times to compare their physiological and technological characteristics. Seeds were stored at two moisture levels, 12% and 15%, for 6 months. Germination and vigor (acelerated aging, electrical conductivity), oil and free fatty acids, peroxide and iodine values were evaluated periodically. As expected, the time of harvesting and seed moisture content affected seed performance, while oil content did not correlate to physiological quality as did acidity, peroxide value and iodine number.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycine max; Seeds; Maturation; Storage; Germination vigor.
Ano: 1994 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161994000200016
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Effect of sampling location, release technique and time after activation on the movement characteristics of scallop (Pecten maximus) sperm ArchiMer
Suquet, Marc; Quere, Claudie; Mingant, Christian; Lebrun, Luc; Ratiskol, Dominique; Miner, Philippe; Cosson, Jacky.
Sperm characteristics of scallops have not been well described in the scientific literature. The effects of sperm release technique (thermal shock versus serotonin injection), of sperm collection technique (testis sampling versus serotonin injection), of sperm sampling location along the genital tract, of in vitro sperm maturation, and of time post activation on scallop sperm characteristics were assessed in the present work. Whatever sperm release technique used, no significant differences were observed regarding the percentage of motile spermatozoa and the velocity of the average path (YAP). Compared to testicular sperm, a higher percentage of motile spermatozoa, YAP and intracellular adenosine triphosphate (ATP) content were observed for sperm shed...
Tipo: Text Palavras-chave: Spermatozoa; CASA; Maturation; Sperm motility; Bivalve; Pecten maximus.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00157/26852/24983.pdf
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Effect of seed maturation stages on physical properties and antioxidant activity in flaxseed ( Linum usitatissimum L.) Ciênc. Tecnol. Aliment.
HERCHI,Wahid; BAHASHWAN,Saleh; TRABELSI,Hajer; SEBEI,Khaled; BOUKHCHINA,Sadok.
Abstract The changes in flaxseed constituents at different stages of maturity are reported. The physical properties and antioxidant activity of flaxseed oil during flaxseed development have been evaluated. Continuous decrease in total polyphenol content during flaxseed development. All the results showed no significant differences between HPLC-MS and TLC for quantitative determination of phospholipids classes. The fatty acid compositions of individual phospholipids were also reported. The antioxidant activity of oilseed was assessed by means of 2, 2-diphenyl-1-picryl-hydrazyl (DPPH) radical scavenging assay. The test demonstrated that the antioxidant activity of the flaxseed oil was found to be harvesting time-dependant.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Physical properties; Antioxidant activity; Total polyphenol content; Flaxseed oil; HPLC-MS; Maturation.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612015000400598
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Endogenous Quantification of Abscisic Acid and Indole-3-Acetic Acid in Somatic and Zigotic Embryos of Nothofagus alpina (Poepp. & Endl.) Oerst Chilean J. Agric. Res.
Cartes Riquelme,Pricila; Ríos Leal,Darcy; Sáez Carrillo,Kátia; Uribe Moraga,Matilde; Valenzuela Aguilar,Sofía; Joseph Bolus,Stephen; Sánchez Olate,Manuel.
Abscisic acid (ABA) and indole-3-acetic acid (IAA) participate in the propagation of plants by somatic embryogenesis, causing polar structural differentiation of the embryo. The goal of the assay was to compare endogenous levels of ABA and IAA between somatic embryos (SE) and zygotic embryos (ZE) of Nothofagus alpina (Poepp. & Endl.) Oerst. In this study, a somatic embryo maturation assay involving the addition of varying concentrations of exogenous ABA was performed on cotyledonary-stage of N. alpina. Furthermore, the endogenous levels of ABA and IAA were quantified in the immature ZE, the mature ZE, and the embryonic axis of a mature embryo of N. alpina. The current study utilized high performance liquid chromatography (HPLC) for quantification....
Tipo: Journal article Palavras-chave: Somatic embryogenesis; Maturation; Germination; HPLC.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400007
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Etat d'avancement des travaux sur les poissons tropicaux en Martinique ArchiMer
Soletchnik, Patrick; Thouard, Emmanuel; Galllet De Saint-aurin, D.; Suquet, Marc; Hurtaud, P.; Mesdouze, J. P..
Ce document se compose de 3 publications : - overview of the studies conducted on the finfish, Palometa (Trachinotus goodei), in Martinique, - spawning of palometa (Trachinotus goodei), in capacity, - spawning of yellowtail snapper (Ocyurus chrysurus ; Bloch, 1791) in capacity. Cette dernière publication, résume l'essentiel des informations obtenues sur la sarde et présentées d'une façon exhaustive dans le document scientifique n°9. Les 2 premières publications de ce document, consacrées à la carangue, font état des derniers résultats acquis sur cette espèce.
Tipo: Text Palavras-chave: Aquaculture; Poissons tropicaux; Elevage; Maturation; Reproduction; Trachinotus goodei; Ocyurus chrysurus; Martinique; Aquaculture; Tropical finfishs; Rearing; Maturation; Reproduction; Trachinotus goodei; Ocyurus chrysurus; Martinique.
Ano: 1988 URL: http://archimer.ifremer.fr/doc/00131/24262/22258.pdf
Registros recuperados: 63
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