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Search Results: 1 - 10 of 73454 matches for " Cláudio Fabrício da Cruz Roma "
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Orienta o e sombreamento do confinamento na temperatura da superfície do pelame de bovinos = Effect of feedlot orientation and shading on haircoat surface temperature of cattle
Ricardo Kazama,Cláudio Fabrício da Cruz Roma,Orlando Rus Barbosa,Lucia Maria Zeoula
Acta Scientiarum : Animal Sciences , 2008,
Abstract: Avaliou-se o efeito do sombreamento sobre a temperatura da superfície do pelame (TSP) de bovinos de cinco grupos genéticos, 4 Limousin + Nelore (L), 8 Limousin + Nelore + RedAngus (LR), 4 Limousin + Nelore + Simental (LS), 2 Marchigiana + Nelore + Simental (MS) e 4 RedAngus + Nelore + Guzerá (RG), com 20 meses de idade e peso médio de 300 kg, alojados em baias individuais de 10 m2, sendo metade coberta com telhas de zinco. A dieta era isoproteica e isoenergética com rela o volumoso:concentrado 67:33. A TSP do Lado 1 (L1) do confinamento, durante o dia, n o diferenciou (p > 0,05) entre os grupos genéticos, enquanto que para o Lado 2 (L2), a menor média (29,48oC) (p < 0,05) foi obtida para MS. No período noturno, a TSPdo L1 foi maior (p < 0,05) para o RG (30,32oC) e n o houve diferen a (p > 0,05) entre os demais. No L2, a maior TSP (p < 0,05) ocorreu para RG (30,63oC) e a menor (p < 0,05), para MS (28,07oC). A orienta o do confinamento n o influenciou a TSP dos animais,sendo a mesma influenciada pelas horas do dia e da noite, reflexo direto da intensidade de radia o térmica incidente na telha de zinco e no piso de concreto. The study evaluated the effect of shading on haircoat surfacetemperature (HST) of cattle from five genetic groups: 4 Limousin + Nellore (L), 8 Limousin + Nellore + RedAngus (LR), 4 Limousin + Nellore + Simmental (LS), 2 Marchigiana + Nellore + Simmental (MS) and 4 RedAngus + Nellore + Guzerá (RG). The cattle were 20 months old and had an average weight of 300 kg.They were housed at individual 10 m2-pens, with half covered with zinc tiles. The diet was isoproteic and isoenergetic, with a 67:33 roughage concentrate ratio. There was no difference (p > 0.05) in HST among genetic groups during daytime on Side 1 (S1) of thefeedlot, while on Side 2 (S2) the lowest HST (29.48oC) (p < 0.05) was observed for MS. At night, the HST for Side 1 was higher (p < 0.05) for RG (30.32oC) and did not differ (p > 0.05) among the others. On Side 2, the highest HST (p < 0.05) occurred for RG (30.63oC) and the lowest (p < 0.05) for MS (28.07oC). The building orientation showed no effect on HST of animals, which was influenced by time of day, direct reflex action of thermal radiation intensity on zinc tiles and on the concrete floor.
Produ o de forragem e desempenho animal em pastagens de coastcross consorciada ou n o com Arachis pintoi, com e sem nitrogênio = Forage Production and Performance Animal in Coastcross Intercropping or not with Arachis pintoi, with or without Nitrogen
Ossival Lolato Ribeiro,Ulysses Cecato,Cláudio Fabrício da Cruz Roma,Juliana Cantos Faveri
Acta Scientiarum : Animal Sciences , 2008,
Abstract: O estudo objetivou avaliar a produ o de forragem e desempenho animal em pastagens de Coastcross + Arachis pintoi; Coastcross + Arachis pintoi com 100 kg ha-1 de N; Coastcross + Arachis pintoi com 200 kg ha-1 de N e Coastcross com 200 kg ha-1 de N, nas esta es de inverno, primavera, ver o e outono. Utilizou-se o delineamento experimentalem blocos ao acaso, com os tratamentos em parcelas subdivididas, com duas repeti es. Foram avaliados: acúmulo de massa de forragem e acúmulo diário de massa de forragem, ganho médio diário (GMD), ganho de peso vivo por área e taxa de lota o. A utiliza o de Coastcross + 200 kg ha-1 de N e as melhores condi es climáticas na primavera e ver o favoreceram tanto o acúmulo de massa de forragem (26.764 kg ha-1 de MS) quanto o acúmulo diário de massa de forragem (82 kg ha-1 por dia de MS). A utiliza o da associa o entre Arachis pintoi + 200 kg ha-1 de N e Coastcross + 200 kg ha-1 de N, possibilitou o melhor desempenho animal, com GMD de 0,570 e 0,500 kg e taxa de lota o de 3,51 e 3,26 UA ha-1, respectivamente. A utiliza o de pastagem consorciada sem a associa o com doses de nitrogênio (100 e 200 kg ha-1) n o favoreceu (p > 0,05) o acúmulo de massa de forrageme a taxa de acúmulo diária. A utiliza o de 200 kg ha-1 de N, com e sem a leguminosa, proporcionou o melhor desempenho e lota o animal por área. The objective of this study was to evaluate dry matter production and animal performance in pastures of Coastcross + Arachis pintoi; Coastcross + Arachis pintoi with 100 kg ha-1 of N; Coastcross +Arachis pintoi with 200 kg ha-1 of N and Coastcross with 200 kg ha-1 of N, during winter, spring, summer and autumn. The experimental design was complete randomized blocks with split-plot parcels, with two repetitions. The study evaluated the accumulation of foragemass and dairy accumulation of forage mass, average daily gain (ADG), live weight gain and stocking rate. The used of Coastcross + 200 kg ha-1 of N and the best climatic conditions in the spring and summer, favored the accumulation of forage mass (26,764 kg ha-1 of DM)and daily accumulation of forage mass (82 kg ha-1 day-1 of DM). The use of the association between Arachis pintoi + 200 kg ha-1 of N and Coastcross + 200 kg ha-1 of N, produces best animal performance, with ADG of 0.570 and 0.500 kg and stocking rate of 3,51 and 3.26AU ha-1, respectively. The use of pasture intercropping without association with doses of nitrogen (100 and 200 kg ha-1) did not favor (p > 0.05) the accumulation of forage mass and dairy accumulation of forage mass. The utlization of 200 kg ha
Morphogenetic and tillering dynamics in Tanzania grass fertilized and non-fertilized with nitrogen according to season
Roma, Cláudio Fabrício da Cruz;Cecato, Ulysses;Soares Filho, Cecílio Viega;Santos, Geraldo Tadeu dos;Ribeiro, Ossival Lolato;Iwamoto, Bruno Shigueo;
Revista Brasileira de Zootecnia , 2012, DOI: 10.1590/S1516-35982012000300013
Abstract: the objectives of this study were to evaluate morphogenetic characteristics and tillering dynamics in tanzania grass fertilized and non-fertilized with nitrogen, under intermittent grazing, in the spring and the summer. the main plots were composed of four nitrogen rates (0, 100, 200 and 300 kg/ha) and the subplots were growth seasons: spring (october, november and december) and summer (january, february and march). the experimental design was of randomized block with plots subdivided by time (seasons of the year) and four replications. urea was used as nitrogen supply and was divided into two applications: one in the spring and another in the summer. the experimental units fertilized with n rates of 200 and 300 kg/ha showed six cycles of pasture, with an average of 27 days of pasture interval, while the treatments with no fertilization and 100 kg/ha of n showed only four and five cycles of pasture, respectively. leaf elongation rate (ler) and the leaf appearance rate (lar) increased linearly with increasing of n rates. the greatest population density occurred in summer with the higher nitrogen rates. the treatment without n fertilization showed the lowest growth of tiller population, while the other treatments exhibited growth rates above 50% when compared with non-fertilized samples. nitrogen rates significantly affect the leaf appearance rate and the leaf elongation rate, as well as the number of live leaves in plants of tanzania grass in both spring and summer.
Consumo de volumosos, produ??o e composi??o físico-química do leite de cabras F1 Boer × Saanen
Osmari, Elisa K?hler;Cecato, Ulysses;Macedo, Francisco de Assis Fonseca de;Roma, Cláudio Fabrício da Cruz;Faveri, Juliana Cantos;Ayer, Ilan Munhoz;
Revista Brasileira de Zootecnia , 2009, DOI: 10.1590/S1516-35982009001200025
Abstract: the effects were assessed of supplying supplementary roughage on intake, milk yield and milk physical and chemical composition in f1 (boer ×saanen) goats. eighteen females were placed in three stalls, and received as ad libitum supplement sorghum silage, corn silage and mulberry hay (mht), with daily control of dry matter intake. the average daily production per week was calculated by gathering the milk data in three post-parturition periods: 1 (34-40 days/7 days); 2 [(64-70 days/7 days) + (91-97 days)/7 days)]/2 and 3 (125-131 days/7 days). daily spot-average of each period (dsap) was calculated from the reference dates of average daily production per week, that was correlated with the composition of fat, protein, lactose, total solids composition and the somatic cell count. the weekly data for acidity and density were grouped in 37, 81±13, 128 and 151±10 days post-parturition. using mixed models, the animal was computed as random and the fixed effects were three supplements and three periods (composition, average daily production per week and per period) or four (acidity and density). mulberry hay intake (0.657 kg) was greater than corn silage (0.604 kg) that was greater than sorghum silage (0.305 kg). in period 2, the ether extract composition was smaller because of the decrease in fat and lactose. in period 3, protein and acidity increased and density was great in periods 1 (1.0270) and 3 (1.0277). mastitis increased scc in period 2. the type of supplement was not significant for protein, but there was post partum period ×supplement effect. the other variables were not influenced by the type of supplement, only by the post-partum period. mulberry hay increased the supplement intake by the goats compared to corn and sorghum silage, but it did not improve milk yield = means and composition. grazing boer ×saanen goats with supplementation have good milk production potential.
Utiliza??o de uma nova equa??o constitutiva para os evaporitos de Taquari-Vassouras
Pinto, Cláudiocio Lopes;Cruz, Eliane Ribeiro da;
Rem: Revista Escola de Minas , 2004, DOI: 10.1590/S0370-44672004000200006
Abstract: the constitutive equation norton power law, using one and two components (norton, 1929) and an equation proposed by pinto (1995) to represent the mechanical behavior of boulby potash mine evaporites were used to simulate the closure of an experimental panel excavated at taquarí-vassouras mine. the results obtained with the norton power law showed the linear characteristic of the deformation computed by this equation. therefore, such equations are not able to represent the transient (primary) creep or the time hardening effect. the bayle-norton constitutive law, used by quinteiro (1992), overcomes this problem. unfortunately, the time term (t), used explicit in its formulation, does not allow it to be used in practical mining situations. the equation proposed by pinto (1995) led to results considered very satisfactory in the simulation carried out. an analysis of this equation demonstrates its capability of simulating, both, the transient (primary) and the steady-state (secondary) creep.
Antibodies against the Plasmodium falciparum glutamate-rich protein from naturally exposed individuals living in a Brazilian malaria-endemic area can inhibit in vitro parasite growth
Pratt-Riccio, Lilian Rose;Bianco-Junior, Cesare;Totino, Paulo Renato Rivas;Perce-Da-Silva, Daiana De Souza;Silva, Luciene Aquino;Riccio, Evelyn Kety Pratt;Ennes-Vidal, Vítor;Neves-Ferreira, Ana Gisele Costa;Perales, Jonas;Rocha, Surza Lucia Gon?alves Da;Dias-Da-Silva, Fabrício;Ferreira-da-Cruz, Maria de Fátima;Daniel-Ribeiro, Cláudio Tadeu;Oliveira-Ferreira, Joseli De;Theisen, Michael;Carvalho, Leonardo José De Moura;Banic, Dalma Maria;
Memórias do Instituto Oswaldo Cruz , 2011, DOI: 10.1590/S0074-02762011000900005
Abstract: the glutamate-rich protein (glurp) is an exoantigen expressed in all stages of the plasmodium falciparum life cycle in humans. anti-glurp antibodies can inhibit parasite growth in the presence of monocytes via antibody-dependent cellular inhibition (adci), and a major parasite-inhibitory region has been found in the n-terminal r0 region of the protein. herein, we describe the antiplasmodial activity of anti-glurp antibodies present in the sera from individuals naturally exposed to malaria in a brazilian malaria-endemic area. the anti-r0 antibodies showed a potent inhibitory effect on the growth of p. falciparum in vitro, both in the presence (adci) and absence (gi) of monocytes. the inhibitory effect on parasite growth was comparable to the effect of iggs purified from pooled sera from hyperimmune african individuals. interestingly, in the adci test, higher levels of tumour necrosis factor alpha (tnf-α) were observed in the supernatant from cultures with higher parasitemias. our data suggest that the antibody response induced by glurp-r0 in naturally exposed individuals may have an important role in controlling parasitemia because these antibodies are able to inhibit the in vitro growth of p. falciparum with or without the cooperation from monocytes. our results also indicate that tnf-α may not be relevant for the inhibitory effect on p. falciparum in vitro growth.
Risk factors for maxillofacial injuries in a Brazilian emergency hospital sample
Leles, José Luiz Rodrigues;Santos, ênio José dos;Jorge, Fabrício David;Silva, Erica Tatiane da;Leles, Cláudio Rodrigues;
Journal of Applied Oral Science , 2010, DOI: 10.1590/S1678-77572010000100006
Abstract: background: maxillofacial injuries occur in a significant number of trauma patients. epidemiological assessments are essential to reaffirm patterns, identify new trends and develop clinical and research priorities for effective treatment and prevention of these injuries. objective: the aim of this study was to identify the epidemiological profile and risk factors associated with maxillofacial trauma treated at a referral emergency hospital for the public health system in the state capital of goiás, brazil. material and methods: a cross-sectional study was designed including 530 patients with maxillofacial trauma, 76% male, with a mean age of 25.5±15.0 years. data were collected between may 2003 and august 2004 over weekly shift-working periods. results: the main causes of trauma were traffic accidents (45.7%) and physical assaults (24.3%), and differences in etiological factors were identified according to gender (p<0.001). the distribution of patients according to age and etiology showed significant differences for traffic accidents (p<0.01), physical assaults (p<0.001), falls (p<0.001) and sport injuries (p<0.01). in the multinomial logistic regression analysis (r2 = 0.233; p<0.05), age was associated with injury in traffic accidents and falls (p<0.01), sports-related accidents were associated with males (p<0.05), and alcohol consumption with assaults and traffic accidents (p<0.001). facial soft tissue lesions were found in 98% of patients and facial fractures in 51%. conclusions: the significant association of maxillofacial trauma with young males and alcohol consumption reinforces the need for educational strategies and the development of policies for the prevention and reduction of associated damage in this specific risk group.
Fontes de fósforo em suplementos minerais para bovinos de corte em pastagem de Cynodon nlemfuensis Vanderyst
Teixeira, Silvana;Branco, Antonio Ferriani;Granzotto, Fernanda;Barreto, Julio Cezar;Roma, Claudio Fabrício da Cruz;Casta?eda, Romàn David;
Revista Brasileira de Zootecnia , 2011, DOI: 10.1590/S1516-35982011000100027
Abstract: this study aimed to evaluate four sources of phosphorus for cattle grazing african bermudagrass (cynodon nlemfuesis vanderyst) pasture and to compare them considering weight performance and physiological parameters. it was used a complete random experimental design, with 32 crossbred steers (bos indicus x bos taurus) at average initial weight of 347 kg randomly distributed in four groups, each one receiving mineral supplement formulated with dicalcium phosphate, supertriple phosphate, monoammonium phosphate or araxá rock phosphate, as sources of phosphorus. weight gain per hectare differed among evaluation dates and it was significantly reduced in the last period, but it did not differ among sources of phosphorus. average daily gain did not differ among sources of phosphorus and it was 0.67; 0.65; 0.63 and 0.56 kg/day, respectively for dicalcium phosphate, supertriple phosphate, monoammonium phosphate and araxá rock phosphate. concentrations of osteocalcin were kept in low levels (47.67 ng/ml) and they were similar among sources of phosphorus. sources of phosphorus were efficient in keeping appropriate levels of phosphorus in serum, with an average of 7.03 mg/100 ml.
Gruta dos Piriás (MG-823): geologia e espeleogênese
Silva, Cláudio Maurício Teixeira da;Sim?es, Paulo Rodrigo;Pereira Filho, Milton;Cruz, Luciana Vetel;
Rem: Revista Escola de Minas , 2005, DOI: 10.1590/S0370-44672005000200003
Abstract: this work purposed the geospeleological mapping of the piriás cave, located in matozinhos - mg, brazil and the interpretation of its evolution. the cave shows a linear, plan-horizontal meandering form, the horizontal projection reaching 670m. the sections are predominantly irregular and rarely show rounded forms, characteristic of development under hydrostatic conditions. the following speleothems are present: cascades, curtains, minigours, coraloids, stalactites, anemolites and dogtooth calcite. the cave was generated at the contact, represented by a detachment fault, of carbonatic rocks of the upper proterozoic sete lagoas formation and the archean granitic-gnaissic basement. the evolution of the cave occurred in three phases, the phreatic, the epiphreatic and the vadose. its development, related to tectonic, stratigraphic and hydrologic factors, is still going on.
Estudo prospectivo, duplo cego e cruzado da Camellia sinensis (chá verde) nas dislipidemias
Batista, Gesiani de Almeida Pierin;Cunha, Cláudio L. Pereira da;Scartezini, Mariléia;von der Heyde, Raul;Bitencourt, Murílo G;Melo, Sandra Fabrício de;
Arquivos Brasileiros de Cardiologia , 2009, DOI: 10.1590/S0066-782X2009000800010
Abstract: background: epidemiological studies have established an association between dyslipidemias and atherosclerosis. nutritional therapy is a key point in the prevention strategy for individuals who present with risk factors for atherosclerotic disease. objectives: to investigate the effects of green tea (camellia sinensis) in patients with dyslipidemias. methods: the study included 33 patients aged between 21 and 71 years who had a low-fat diet (25-35% of total calories and 200 mg of cholesterol per day). they were randomized for two sequential treatments: 250-mg capsules of green tea dry extract or placebo for a total period of 16 weeks; each patient received green tea (camellia sinensis) for eight weeks and placebo for another eight weeks. results: baseline lipid values (mg/dl) were: hdl-cholesterol 60.7 ± 7.3; total cholesterol 255 ± 30.9; ldl-cholesterol 158.8 ± 29.0; triglycerides 169.0 ± 61.3 and apo-b 120.2 ± 18.9. mean lipid variations induced by the use of green tea (camellia sinensis) showed a 3.9% reduction (p = 0.006) in total cholesterol concentrations and a 4.5% reduction (p = 0.026) in ldl-cholesterol. the intake of green tea did not significantly influence hdl-cholesterol, triglyceride, and apo-b levels. non-significant results were found in the assessment of blood lipids (total cholesterol and ldl-cholesterol) with the use of placebo. conclusion: a beneficial effect of green tea (camellia sinensis) was demonstrated, with a significant reduction of total cholesterol and ldl-cholesterol levels in eight weeks, in the patients studied.
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