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Search Results: 1 - 10 of 67145 matches for " José Sereno "
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Emergência de Haematobia Irritans nas massas fecais de bovinos das ra?as Nelore e Pantaneira no pantanal mato-grossense
Sereno, Fabiana Tavares Pires de Souza;Sereno, José Robson Bezerra;
Pesquisa Agropecuária Brasileira , 1999, DOI: 10.1590/S0100-204X1999000900022
Abstract: this study was carried out at nhumirim farm, property of embrapa-centro de pesquisa agropecuária do pantanal, corumbá, ms, brazil, from 11/93 to 05/94, with manure samples of nelore and pantaneira breeds collected to compare the number of horn flies (haematobia irritans) on manure samples of both bovine breeds. out of the 112 bovine samples collected from each breed, 72 (64.3%) nelore manure samples showed pupa of h. irritans; in pantaneira, out of 105 (94%) manure samples with fly pupas, only 60 (53.6%) exhibited h. irritans. the results of comparative measurements of length, width, height and volume parameters among the manure samples, showed no significant difference (t test - p>0.05) between nelore and pantaneira breeds. the number of fly pupas collected from the manure samples of pantaneira breed (n=2892) was higher than in nelore breed (n=1715) (p<0.05). with relation to h. irritans, a higher number of pupas was observed in the manure samples of pantaneira breed (n=399)(p<0.05) than in nelore breed (n=237). the manure samples of pantaneira also presented a higher (p<0.05) total number of pupas by feces volume. the pantaneira breed showed higher attraction to horn flies.
Cytogenetic and molecular analysis of the Pantaneiro cattle breed
Issa, érica Cunha;Jorge, Wilham;Sereno, José Robson Bezerra;
Pesquisa Agropecuária Brasileira , 2006, DOI: 10.1590/S0100-204X2006001100006
Abstract: the objective of this work was to characterize pantaneiro cattle genetically through its paternal ancestry by the morphology of the y chromosome, whether submetacentric or acrocentric, as well as to identify the maternal ancestry through mitochondrial dna. the karyotype and mitochondrial dna of 12 bulls of pantaneiro breed were analyzed. the y chromosome was analyzed in lymphocyte metaphases and the mitochondrial dna by diagnosing its haplotype (bos taurus and bos indicus). among pantaneiro animals analyzed three had a taurine (submetacentric) y and nine had a zebuine (acrocentric) y chromosome, suggesting breed contamination by zebu cattle, once pantaneiro is considered to be of european origin. the mitochondrial dna was exclusively of taurine origin, indicating that the participation of zebuines in the formation of the breed occurred entirely through the paternal line.
DNA testing for parentage verification in a conservation nucleus of Pantaneiro horse
Sereno, Fabiana Tavares Pires de Souza;Sereno, José Robson Bezerra;Vega-Pla, Jose Luis;Delgado, Juan Vicente;
Genetics and Molecular Biology , 2008, DOI: 10.1590/S1415-47572008000100013
Abstract: we investigated the genealogy of the in situ conservation nucleus of the pantaneiro horse using dna microsatellites by evaluating 101 horses, the group consisting of 71 adult horses (3 stallions, 40 male and 31 mares) and 27 foals (14 colts and 13 fillies). genomic dna was extracted from hair roots and genotyped using 12 microsatellite markers (aht4, aht5, asb2, asb17, asb23, hms3 hms6, hms7, htg4, htg10, lex33 and vhl20). the number of alleles per locus varied from 6 to 13, with a mean of 7.8 and the expected heterozygosity ranged from 0.544 to 0.734 (mean 0.644). the vlh20, asb2, htg10, asb23 markers had a high (> 0.8) polymorphism information content and the total exclusion probability of the 12 microsatellite loci was 0.99. the genealogical study of the pantaneiro horse using genetic markers was efficient in detecting mistakes during paternity and maternity designation and is an important tool which can be used together with traditional systems of animal identification. the use of genetic markers is recommended in the systematic control of the genealogical registrations and conservation plans to improve genetic aspects of the pantaneiro horse.
Veda e vermifuga??o como alternativas de manejo para desmama de bezerros Nelore em pastagem nativa do Pantanal
Pesquisa Agropecuária Brasileira , 2000, DOI: 10.1590/S0100-204X2000001000023
Abstract: the aim of this study was to investigate the integrated effects of native pastures sealing with strategic control of gastrointestinal nematodes on body development of weaned nellore calves, studied between march 1992 and january 1993 in the pantanal region, brazil. two homogeneous groups of weanling calves were put on contiguous paddocks of native pastures with the same physiognomic characteristics and sealed for three and a half months. the paddock where the non-treated group was put, was previously used by cows that were rearing a calf for contamination of the pasture. the treated group remained with low levels of eggs per gram of feces (egf) during the whole experimental period. in the non-treated group, the egf diminished during the assay, ending with similar levels of the treated group. on body development, it was observed a lower body weight loss of the treated group during the dry season and a compensatory weight gain of the nontreated group on the subsequent rainy season. the mean body weight of the two groups was similar at the end of the trial.
Veda e vermifuga o como alternativas de manejo para desmama de bezerros Nelore em pastagem nativa do Pantanal
Pesquisa Agropecuária Brasileira , 2000,
Abstract: Entre mar o de 1992 e janeiro de 1993 realizou-se este estudo com o objetivo de avaliar o efeito integrado da veda do pasto nativo com o controle estratégico de nematóides gastrintestinais no desempenho corporal de bezerros Nelore pós-desmame no Pantanal da Nhecolandia, MS, Brasil. Dois lotes de animais recém-desmamados aos nove meses foram colocados em invernadas contíguas de pastagens nativas com as mesmas características fision micas, que foram vedadas por três meses e meio; a invernada do lote controle foi previamente pastejada por vacas com bezerro ao pé para contamina o. O lote tratado permaneceu com níveis muito baixos de ovos por grama de fezes durante todo o período experimental, e no lote controle foram diminuindo no decorrer do ensaio, terminando semelhantes. No desenvolvimento corporal, observou-se menor perda de peso do lote tratado durante a esta o seca e ganho de peso compensatório do lote controle na esta o chuvosa subseqüente. Os pesos médios dos dois lotes no final do experimento foram semelhantes.
Inverse Kinematics
Joel Sereno
Undergraduate Journal of Mathematical Modeling : One + Two , 2010, DOI: 10.5038/2326-3652.3.1.18
Abstract: Inverse kinematics is the process of converting a Cartesian point in space into a set of joint angles to more efficiently move the end effector of a robot to a desired orientation. This project investigates the inverse kinematics of a robotic hand with fingers under various scenarios. Assuming the parameters of a provided robot, a general equation for the end effector point was calculated and used to plot the region of space that it can reach. Further, the benefits obtained from the addition of a prismatic joint versus an extra variable angle joint were considered. The results confirmed that having more movable parts, such as prismatic points and changing angles, increases the effective reach of a robotic hand.
Corrigenda: Sereno PC (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1–225
Paul Sereno
ZooKeys , 2012, DOI: 10.3897/zookeys.227.4091
Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs
Paul Sereno
ZooKeys , 2012, DOI: 10.3897/zookeys.226.2840
Abstract: Heterodontosaurids comprise an important early radiation of small-bodied herbivores that persisted for approximately 100 My from Late Triassic to Early Cretaceous time. Review of available fossils unequivocally establishes Echinodon as a very small-bodied, late-surviving northern heterodontosaurid similar to the other northern genera Fruitadens and Tianyulong. Tianyulong from northern China has unusual skeletal proportions, including a relatively large skull, short forelimb, and long manual digit II. The southern African heterodontosaurid genus Lycorhinus is established as valid, and a new taxon from the same formation is named Pegomastax africanus gen. n., sp. n. Tooth replacement and tooth-to-tooth wear is more common than previously thought among heterodontosaurids, and in Heterodontosaurus the angle of tooth-to-tooth shear is shown to increase markedly during maturation. Long-axis rotation of the lower jaw during occlusion is identified here as the most likely functional mechanism underlying marked tooth wear in mature specimens of Heterodontosaurus. Extensive tooth wear and other evidence suggests that all heterodontosaurids were predominantly or exclusively herbivores. Basal genera such as Echinodon, Fruitadens and Tianyulong with primitive, subtriangular crowns currently are known only from northern landmasses. All other genera except the enigmatic Pisanosaurus have deeper crown proportions and currently are known only from southern landmasses.
Bertilla e Berta: il ruolo di Santa Giulia di Brescia e di San Sisto di Piacenza nel regno di Berengario I Bertilla and Berta: the role of St. Giulia of Brescia and St. Sisto of Piacenza in the reign of Berengar I
Cristina Sereno
Reti Medievali Rivista , 2012, DOI: 10.6092/1593-2214/367
Abstract: Di nessuna delle due mogli di Berengario I – Bertilla, la prima, un’aristocratica di origine supponide e Anna, la seconda, una principessa bizantina – si sono conservate le carte dei dotari. Di entrambe, inoltre, nessuna carta ricorda attività economiche o patrimoniali. Nel contesto familiare di Berengario I emerge però una delle due figlie, Berta, che fu badessa del monastero di San Salvatore di Brescia e poi anche, per nomina paterna, del monastero di San Sisto di Piacenza, fondato pochi decenni prima da Angelberga. Entrambi i monasteri avevano raccolto nei loro patrimoni larghe quote del fisco regio, spesso in prima istanza transitati nei dotari delle regine: le curtes e i monasteri dipendenti erano sparsi in tutta la parte settentrionale della penisola e, in taluni casi, oltrepassavano la linea degli Appennini. Berta appare così assumere presso la corte di Berengario una funzione di grande rilievo nella gestione e nella salvaguardia dei patrimoni di tali monasteri. Of none of the two wives of Berengar I - Bertilla, the first, an aristocratic woman from the Supponids and Anna, the second, a Byzantine princess - have been preserved dower charters; moreover no charter reminds businesses or assets. In the family context of Berengar I emerges, however, one of his two daughters, Berta, who was abbess of the monastery of St. Salvatore in Brescia and later, by his father's appointment, of the monastery of St. Sisto in Piacenza, founded a few decades earlier by Angelberga. Both monasteries were collected in their assets large shares of royal treasury, often in the first instance passed through in doweries of the queens: the curtes and the dependent monasteries were spread across the northern part of the peninsula and, in some cases, they passed the line of the Apennines. It looks like as at the court of Berengar Berta assumes a role of great importance in the management and safeguarding of the assets of these monasteries.
Site of the Institut für Frühmittelalterforschung of Münster University Sito dell’Institut für Frühmittelalterforschung dell’Università di Münster
Cristina Sereno
Reti Medievali Rivista , 2007, DOI: 10.6092/1593-2214/139
Abstract: Review of the Site of the Institut für Frühmittelalterforschung of Münster University Recensione del sito dell’Institut für Frühmittelalterforschung dell’Università di Münster
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