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Search Results: 1 - 10 of 51871 matches for " Paulo Fernando;Sarríes "
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Composi??o do leite de tanques de rebanhos brasileiros distribuídos segundo sua contagem de células somáticas
Machado, Paulo Fernando;Pereira, Alfredo Ribeiro;Sarríes, Gabriel Adrian;
Revista Brasileira de Zootecnia , 2000, DOI: 10.1590/S1516-35982000000600038
Abstract: a survey on the somatic cell count (scc), fat, protein, lactose and total solids percentages on bulk tank milk samples, from december 1996to july 1998, was used to characterize the milk composition as determined by scc. data of 4785 from the database were classified according to the scc, in four groups (group 1, scc < 500 thousand cells/ml; group 2, 500 < scc < 1.000 thousand cells/ml; group 3, 1.000 < scc < 1.500 thousand cells/ml; group 4, scc > 1.500 thousand cells/ml). a descriptive statistics, analysis of variance and multiple mean tests were applied to the groups. increases on the group classes were associated with increases on concentration and standard deviation and decreases on protein and lactose concentrations. despite of the no significance, the total solids tended to decrease as group classes increase. the bulk tank milk samples with higher scc had greater fat percentages, lower protein and lactose percentages and the same total solids percentages. the significant changes in the milk component contents occur above 1.000.000 cells/ml for fat and 500 thousand cells/ml for protein and lactose. bulk tank groups with greater scc have greater variability in milk component compositions.
Contagem de células somáticas e características produtivas de vacas da ra?a holandesa em lacta??o
Pereira, Alfredo Ribeiro;Machado, Paulo Fernando;Sarríes, Gabriel Adrian;
Scientia Agricola , 2001, DOI: 10.1590/S0103-90162001000400001
Abstract: subclinical mastitis results in the decrease of milk and fat production. this disease is detected using somatic cell counts. the objective of this study was to quantify the relation of somatic cell levels, transformed into linear score (ls), and the production of milk and fat during 305 days of lactation, peak milk production, and the lactation duration time of holstein cattle. data were gathered concerning 147 closed lactations of holstein cows (83 primiparous and 64 multiparous) from a confined herd in the state of s?o paulo, brazil. statistical analyses were performed through the general linear model procedure. the productive characteristics of multiparous, but not primiparous cows, were affected acording to the linear score. an increase in the average linear score during lactation resulted in the decrease of fat and milk production in the 305 days of lactation. the increase in the average linear score at the beginning of the lactation period resulted in a decrease of milk production at the peak of lactation.
Composi o do leite de tanques de rebanhos brasileiros distribuídos segundo sua contagem de células somáticas
Machado Paulo Fernando,Pereira Alfredo Ribeiro,Sarríes Gabriel Adrian
Revista Brasileira de Zootecnia , 2000,
Abstract: Foi realizado um levantamento dos dados de contagem de células somáticas (CCS), porcentagens de gordura, proteína, lactose e sólidos totais de amostras de leite de tanques recebidas no período de dezembro de 1996 a julho de 1998, com o objetivo de se caracterizar a composi o do leite segundo sua contagem de células somáticas. Os 4785 dados de análise foram classificados segundo sua CCS, sendo formados quatro grupos (grupo 1, CCS < 500 mil cél./mL; grupo 2, 500 < CCS < 1000 mil cél./mL; grupo 3, 1000 < CCS < 1500 mil cél./mL; grupo 4, CCS > 1.500 mil cél./mL). Aos grupos foram aplicadass técnicas de estatística descritiva, análise de variancia e compara es múltiplas de médias. O aumento da ordem das classes acarretou acréscimo da porcentagem de gordura e dos desvios-padr o e redu o nas porcentagens de proteína e lactose. A concentra o de sólidos totais, apesar de n o-significativa, apresentou tendência de redu o. Concluiu-se que leite de tanques com CCS mais altas apresentaram maior porcentagem de gordura, menor porcentagem de proteína e lactose e igual porcentagem de sólido totais. As mudan as significativas nas concentra es do componentes do leite ocorrem a partir de 1.000.000 cél./mL para gordura e 500 mil cél./mL para proteína e lactose. Grupos de tanques com maiores CCS apresentaram maior variabilidade nas concentra es dos constituintes do leite.
Contagem de células somáticas e características produtivas de vacas da ra a holandesa em lacta o
Pereira Alfredo Ribeiro,Machado Paulo Fernando,Sarríes Gabriel Adrian
Scientia Agricola , 2001,
Abstract: A mastite subclínica, diagnosticada através da contagem de células somáticas, afeta negativamente a pecuária leiteira diminuindo a produ o de leite e de gordura. Este estudo foi realizado com o objetivo de se quantificar o efeito do nível de células somáticas, transformado para escore linear (EL), sobre a produ o de leite e gordura em 305 dias de lacta o, produ o de leite no pico e dura o da lacta o de bovinos da ra a holandesa. Foram levantadas informa es referentes a 147 lacta es encerradas de vacas da ra a holandesa (83 primíparas e 64 multíparas), de um rebanho confinado do Estado de S o Paulo. As análises estatísticas foram realizadas utilizando-se o procedimento de modelo lineares generalizados. Contrariando a literatura, as características produtivas dos animais primíparos n o sofreram efeito do escore linear. Provavelmente este fato ocorreu devido a quase inexistência de animais primíparos com EL maior que 4,5. O aumento do escore linear médio durante a lacta o levou a diminui o da produ o de leite e gordura em 305 dias de lacta o. O aumento do escore linear médio durante o início da lacta o levou a diminui o da produ o de leite no pico da lacta o.
Sistema de controle de velocidade sincronizada entre dois veículos agrícolas
Baldo, Rodrigo Fernando Galzerano;Magalh?es, Paulo Sergio Graziano;
Ciência Rural , 2012, DOI: 10.1590/S0103-84782012005000001
Abstract: this paper presents a proposal for automatic speed control of vehicles that requires working in synchronism with each other during agricultural operations. it describes the development and field tests of a control system for a slave tractor based on the master tractor speed, using a fuzzy controller. for the tests the master tractor was instrumented with gps, encoders, computer and radio transmitter. the slave tractor was instrumented in the same way, and included also a stepper motor to act on the tractor throttle. to evaluate the system two tests were conducted. in the first, the master tractor speed was simulated using only the slave tractor. in the second test, two tractors were used varying the master tractor speed and registering the slave tractor response. in the first test the slave tractor followed the speed variation simulated with a mean square error (mse) non-significant and a maximum mean percentage error (mpe) of 1.3%. in the second test the slave tractor followed the master tractor speed variation with a displacement (mpe) ranging in magnitude from 0.2% to 2.9%.
Injúria Renal Aguda no paciente politraumatizado Acute Renal Injury in polytrauma patients
Thiago Gomes Romano,Paulo Fernando Guimar?es Morando Marzocchi Tierno
Jornal Brasileiro de Nefrologia , 2013,
Abstract: A Injúria Renal Aguda (IRA) no contexto do paciente politraumatizado ocorre, na maioria das vezes, por uma conjuntura de fatores que passam por eventos correlacionados à ressuscita o volêmica inicial, ao grau de resposta inflamatória sistêmica associada ao trauma, ao uso de contraste iodado para procedimentos diagnósticos, à rabdomiólise e à síndrome compartimental abdominal. Atualmente, passamos por uma fase de uniformiza o dos critérios diagnósticos da IRA com o Acute Kidney Injury Network (AKIN), sendo a referência mais aceita. Consequentemente, o estudo da IRA no politraumatismo também passa por uma fase de reformula o. Esta revis o da literatura médica visa trazer dados epidemiológicos, fisiológicos e de implica o clínica para o manuseio destes pacientes, bem como expor os riscos do uso indiscriminado de expansores volêmicos e particularidades sobre a institui o de terapia renal substitutiva em indivíduos sob risco de hipertens o intracraniana. Acute Kidney Injury (AKI) in trauma is, in most cases, multifactorial. Factors related to the initial ressuscitation protocol, degree of the systemic inflamatory response to trauma, contrast nephropathy in diagnostic procedures, rhabdomyolysis and abdominal compartment syndrome are some of those factors. Nowadays a uniformization in diagnostic criteria for AKI has been proposed by the Acute Kidney Injury Network (AKIN) and as a result the incidence of AKI and its impact in outcomes in trauma patients also needs to be reconsider. In this review we aim to approach epidemiologic, physiologic and clinical relevant data in the critical care of patients victims of trauma and also to expose the risks of indiscriminate use of volume expanders and the interaction between renal replacement theraphy and intracranial hypertension.
Fatores de risco para mortalidade em octogenários submetidos a cirurgia de revasculariza??o miocárdica
Guimar?es, Isaac Newton;Moraes, Fernando;Segundo, Jo?o Paulo;Silva, Igor;Andrade, Tamyris Guimar?es;Moraes, Carlos R.;
Arquivos Brasileiros de Cardiologia , 2011, DOI: 10.1590/S0066-782X2011005000008
Abstract: background: the complexity of reentrant circuits related to ventricular tachycardias decreases the success rate of radiofrequency ablation procedures. objective: to evaluate whether the epicardial mapping with multiple electrodes carried out simultaneously with the endocardial mapping helps in ablation procedures of sustained ventricular tachycardia (vt) in patients with nonischemic heart disease. methods: twenty-six patients with recurrent sustained vt, of which 22 (84.6%) presenting chronic chagasic cardiomyopathy, 2 (7.7%) with idiopathic dilated cardiomyopathy and 2 with right ventricular arrhythmogenic dysplasia (rvad), were submitted to epicardial mapping with two or three microcatheters, with 8 electrodes each, simultaneously to the conventional endocardial mapping. a catheter with a 4-mm tip was used for the ablation by radiofrequency (rf) carried out during the induced vt. results: of the 33 induced vt, 25 were mapped and 20 had their origin defined. eleven had epicardial and 9 had endocardial origin. the programmed ventricular stimulation did not induce sustained vt in 11 (42.0%) of the 26 patients after the ablation. events such as vt recurrence and death occurred in 10.0% of the patients submitted to successful ablation and in 59.0% of the unsuccessful cases, during a mean ambulatory follow-up of 357 ± 208 days. conclusion: subepicardial circuits are frequent in patients with nonischemic heart disease. the epicardial mapping with multiple catheters carried out simultaneously with the endocardial mapping contributes to the identification of these circuits in a same procedure.
Daily intake of lactating crossbred cows grazing elephant grass rotationally
Aroeira Luiz Januário Magalh?es,Lopes Fernando César Ferraz,Soares Jo?o Paulo Guimar?es,Deresz Fermino
Pesquisa Agropecuária Brasileira , 2001,
Abstract: The goal of this trial was to estimate the total dry matter (TDMI) and daily pasture dry matter intakes (PDMI) by lactating crossbred Holstein - Zebu cows grazing elephant grass (Pennisetum purpureum Schum.) paddocks submitted to different rest periods. Three groups of 24 cows were used during two years. The paddocks were grazed during three days at the stocking rate of 4.5 cows/ha. Treatments consisted of resting periods of 30 days without concentrate and resting periods of 30, 37.5 and 45 days with 2 kg/cow/day of 20.6% crude protein concentrate. From July to October, pasture was supplemented with chopped sugarcane plus 1% urea. Total daily dry matter intake was estimated using the extrusa in vitro dry matter digestibility and the fecal output with chromium oxide. Regardless of the treatment the estimated average TDMI was 2.7, 2.9 and 2.9±0.03% and the mean PDMI was 1.9, 2.1 and 2.1±0.03% of body weight in the first, second and third grazing day, respectively (P<0.05). Only during the summer pasture quality was the same whichever the grazing day. Sugarcane effectively replaced grazing pasture, mainly in the first day when pasture dry matter intake was lowest.
Investigating the center of pressure velocity Romberg's quotient for assessing the visual role on the body sway
Silva, Paulo José Guimar?es da;Nadal, Jurandir;Infantosi, Antonio Fernando Catelli;
Revista Brasileira de Engenharia Biomédica , 2012, DOI: 10.4322/rbeb.2012.039
Abstract: the classical romberg's test based on stabilometric tests in eyes open (eo) and closed (ec) conditions was used for investigating the influence of visual feedback in the body sway control in healthy adult subjects. stabilograms from 144 subjects (aged 18-40) resting over a force platform were recorded for 30 s in eo and 30 s in ec conditions. the mean velocity was obtained for eo (vmeo) and ec (vmec) in both anterior-posterior (y) and medial-lateral (x) directions and in the (x,y) plane, and thus used for computing the respective romberg's quotient (rqv). all vm and rqv parameter histograms presented unimodal asymmetric shapes, which were adequately fitted to lognormal distributions (kolmogorov-smirnov test, p > 0.05). these findings suggest a single homogeneous group in terms of visual strategy. taking the threshold scores (95% confidence interval) of the vm and rqv distributions, only four subjects (2.7%) presented values below the lower limit, as expected by the confidence level (two tailed, 5%). a strong dependence was also found between each rqv and the respective vmec (spear correlation > 0.86, r2 > 74.0%), with vmeo presenting almost negligible coefficients of determination (r2 < 2.9%). one can conclude that rqv derived from a single stabilometric trial could be not sufficient for the diagnosis of body sway control impairment by vision. nevertheless, the rqv could be useful to indicate subjects to carry out additional tests to investigate a possible deficit in the integration of the visual information in the postural control system.
Hygienic-sanitary quality of vegetables and evaluation of treatments for the elimination of indigenous E. coli and E. coli O157:H7 from the surface of leaves of lettuce (Lactuca sativa L.)
Santos, Ytana oliveira;Almeida, Rogeria Comastri de Castro;Guimar?es, Alaise Gil;Almeida, Paulo Fernando;
Ciência e Tecnologia de Alimentos , 2010, DOI: 10.1590/S0101-20612010000400038
Abstract: the purpose of this study is to evaluate the hygienic-sanitary quality of vegetables and irrigation water and assess the effectiveness of lemon juice and vinegar in reducing e. coli strains inoculated on lettuce. one hundred and forty samples of vegetables and 45 samples of irrigation water were investigated for thermotolerant coliforms and salmonella spp. in order to verify the effectiveness of natural household sanitizers in reducing e. coli in inoculated lettuce, four treatment solutions were tested: fresh lemon juice, alcohol vinegar, lemon juice-vinegar mixture, and lemon juice-vinegar-water mixture. the microbiological analysis revealed high rates of contamination by thermotolerant coliforms and identified the presence of e. coli in 32% of the tested vegetable samples and 56% of the water samples. while no significant statistical difference (p < 0, 05) was identified in the tested solutions, the treatment with a combination of lemon juice and vinegar resulted in the highest decimal reductions (dr) of e. coli o157: h7 while the treatment with vinegar alone was the most effective against the indigenous e. coli strain
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