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Search Results: 1 - 10 of 404801 matches for " M.M.;Rodriguez "
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Cinética ruminal do feno de Stylosanthes guianensis
Ladeira M.M.,Rodriguez N.M.,Gon?alves L.C.,Borges I.
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2001,
Abstract: Sete carneiros fistulados no rúmen e no duodeno foram alojados em gaiolas metabólicas e alimentados com feno de Stylosanthes guianensis à vontade. Foi empregada a técnica de sacos de náilon para determina o da degradabilidade in situ do feno, utilizando-se os tempos de 3, 6, 12, 24, 48 e 72 horas para as retiradas dos sacos do rúmen. A taxa de passagem dos sólidos foi determinada utilizando-se cromo mordante como indicador. Os valores de pH no líquido ruminal foram medidos nos tempos de 0, 2, 4, 6 e 8 horas após a alimenta o e a concentra o de am nia nos tempos de 0, 1, 3, 5, 7, 9 e 11 horas após a alimenta o. A taxa de degrada o da matéria seca (MS) foi de 8,5%/h, a degradabilidade potencial 38,1% e a degradabilidade efetiva 30,3%. A taxa de degrada o da proteína bruta (PB) foi de 9,7%/h, a degradabilidade potencial 56,0% e a degradabilidade efetiva 47,5%. A celulose apresentou maior degradabilidade efetiva que a hemicelulose, com valores de 22,5 e 8,9%, respectivamente. A taxa de passagem dos sólidos foi 2,7%/h. O pH diminuiu linearmente à medida que os tempos de coleta aumentaram. Para o tempo de 5,13 horas após a alimenta o, foi estimada a concentra o máxima de am nia de 12,18mg/100ml. O feno de S. guianensis apresentou alta taxa de degrada o e baixa degradabilidade ruminal da MS e PB.
Consumo e digestibilidades aparentes total e parciais do feno de Stylosanthes guianensis
Ladeira M.M.,Rodriguez N.M.,Gon?alves L.C.,Borges I.
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2001,
Abstract: Utilizaram-se sete carneiros, sem ra a definida, fistulados no rúmen e duodeno, para avaliar o consumo e as digestibilidades aparentes totais e parciais de matéria seca (MS), matéria organica (MO), proteína bruta (PB), extrato etéreo (EE), fibra em detergente neutro (FDN), fibra em detergente ácido (FDA), celulose (CEL) e hemicelulose (HCEL) do feno de Stylosanthes guianensis. Os animais receberam apenas feno de S. guianensis mais sal mineral como componentes da dieta. O fornecimento do feno foi ad libitum, sendo a quantidade calculada para permitir sobras de 20%. Utilizou-se óxido cr mico como indicador para estimar a produ o de fezes e o fluxo de digesta no duodeno. Os consumos de MS e MO do S. guianensis foram 67,71 e 64,70 g/kg0,75, respectivamente. As digestibilidades aparentes totais da MS, MO, PB, FDN e FDA foram 49,2, 51,3, 61,2, 42,0 e 42,7%, respectivamente. As digestibilidades aparentes ruminais da MS, MO, FDN e FDA foram 75,8, 84,7, 89,6 e 90,6%, respectivamente, em fun o do total digerido. A digestibilidade ruminal da PB foi 21,3%. Concluiu-se que o feno de S. guianensis, colhido em estádio de maturidade avan ada, pode ser indicado para ruminantes, pois seu consumo é capaz de atender às necessidades energéticas de manten a já que seus valores, apesar de sua digestibilidade n o ser elevada, s o ligeiramente maiores do que os de outras forrageiras tropicais.
Predi o da composi o química do sorgo pela técnica de espectroscopia de reflectancia no infravermelho próximo
Saliba E.O.S.,Gontijo Neto M.M.,Rodriguez N.M.,Miranda L.F.
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2003,
Abstract: Determinou-se a composi o química do sorgo pela espectroscopia de reflectancia no infravermelho próximo (NIRS), comparando-a com os dados obtidos pelas análises convencionais de laboratório. Foram utilizadas 132 amostras de quatro variedades de sorgo: AG212 (porte alto), AG 2002 (porte alto), AG 2005 (duplo propósito) e AG 213 (porte alto). Com o intuito de se obter uma curva ampla, todas as amostras foram agrupadas compondo uma curva denominada sorgo in natura. As variáveis avaliadas foram carboidratos solúveis (CHO sol), fibra detergente neutro (FDN), fibra detergente ácido (FDA), proteína bruta (PB), matéria seca (MS) e digestibilidade in vitro da matéria seca (DIVMS). Utilizou-se o tratamento de absorbancia e foram encontrados os seguintes coeficientes de determina o (%): CHO sol = 98,7, FDN = 96,4, FDA = 98,1, PB = 99,5, MS = 95,8 e DIVMS = 93,1. A calibra o foi boa (baixo erro de calibra o e alto coeficiente de determina o) para o tratamento de absorbancia.
Eosinophil-active chemokines: assessment of in vivo activity
Teixeira, M.M.;
Brazilian Journal of Medical and Biological Research , 1998, DOI: 10.1590/S0100-879X1998000100003
Abstract: the selective recruitment of eosinophils in tissue is a striking feature of allergic diseases. recently, a family of chemoattractant molecules, namely chemokines, has been described which potently activates eosinophil function in vitro. we have developed a murine model of eosinophil recruitment to compare the relative potency and efficacy of chemokines in vivo. of the chemokines tested, only eotaxin and mip-1a induced significant accumulation of eosinophils in vivo, but eotaxin was more effective than mip-1a. chemokines, especially eotaxin acting via the ccr-3 receptor, may have a fundamental role in determining selective eosinophil recruitment in vivo
Study of ion beam sputtering using a glow discharge ion source
Abdelrahman, M.M.;
Brazilian Journal of Physics , 2010, DOI: 10.1590/S0103-97332010000100005
Abstract: in this work, sputtering yield in a glow discharge ion source system has been determined using the operating parameters of the ion source. the sputtering yield is found to be varied between 0.4 to 1 atoms removed per incident ion for nitrogen while for argon between 0.2 to 1.3 atoms removed per incident ion. the feature of this ion source is high output ion beam current and small size. operation of the ion source is quite simple since a stable discharge can be obtained within a large range of main parameters such as, discharge voltage, discharge current and gas pressure. also, beam profile for argon ion beam produced from the glow discharge ion source at id = 2,3 ma (discharge current) using argon gas with different gas pressures has been investigated.
Torsional vibration of carbon nanotubes under initial compression stress
Selim, M.M.;
Brazilian Journal of Physics , 2010, DOI: 10.1590/S0103-97332010000300004
Abstract: this study examines torsional vibration of single-walled carbon nanotubes (swcnts) subjected to initial compression stresses. the nanotube structures are treated within the multilayer thin shell approximation with the elastic properties taken to be those of the graphene sheet. simplified flügge shell equations of motion are proposed as the governing equations of vibration for the carbon nanotubes. a new equation of motion and phase velocity of torsional waves propagating in carbon nanotubes (cnts) subjected to initial compression stresses have been derived. the study reveals that the initial stresses present in the tube has a notable effect on the propagation of torsional waves. the results has been discussed and shown graphically. this investigation is very significant for potential application and design of nanoelectronics and nanodevices.
Corrosion Behaviour of Zn-Al-Cu Alloy in HCl Solution and its Inhibition
Ahmed,M.M.;
Portugaliae Electrochimica Acta , 2006,
Abstract: the corrosion behaviour of zn - al - cu alloy was studied in pure hcl solutions and in the presence of different concentrations of inhibitors. the techniques of measurements were: weight loss, linear polarization, polarization impedance and corrosion penetration. it was found that the corrosion rate of this alloy is greatly higher than that of zn or al. the inhibitors used were: heterocyclic pyridine (p), 2-methyl pyridine (2 mp), 3-methyl pyridine (3 mp) and 4-methyl pyridine (4 mp). these inhibitors behave as mixed type and their inhibition efficiency increases according to the order: 2 mp < 3 mp < p <4 mp. the values of activation energy of corrosion were determined in pure acid and in the presence of inhibitors. it was found that the presence of these inhibitors increases the value of activation within the same order of their inhibitory effect. the adsorption of the investigated inhibitors on the surface of the alloy follows frumkin?s isotherm.
Comparative Histological Study Vagus Nerve in Different Parts of Body on the Rabbits
M.M. Salech
Journal of Animal and Veterinary Advances , 2012,
Abstract: Through studying of vagus nerves in rabbits, histological compound observed that contain myelin nerve fiber but can be found variation percentage of different region of body, and non-myelin nerve fibers with different shapes of nucleus of the schwann cell depended on the area of nerve and function of the vagus nerve.
Analysis of the Profitability and Resource-Use Efficiency of Small-Scale Businesses in Ondo-State: A Panacea for Youth Unemployment
M.M. Fasoranti
Pakistan Journal of Social Sciences , 2012,
Abstract: The study examined the profitability and resource-use efficiency of small-scale business in Ondo-State. Multi-stage sampling technique was used to select 120 small-scale business operators in bakery, tailoring and block making services from Akoko North East, Akoko South West and Akoko North West of Ondo State. The data collected were analysed with the aid of descriptive statistics, gross margin and production function analyses. Results showed that the sampled businesses were profitable in the study area with estimated gross margin of N46, 068.8, N3, 588.8 and N39, 900.5 with estimated net returns of N33,172.00, N2,889.8 and N30,368.0 for bakery, tailoring and block making services, respectively. The result of the production function analysis showed that the inputs involved were efficiently allocated under bakery services while they were inefficiently allocated under tailoring and block making services. Bakery service was in stage 2 while tailoring and block making were in stages 1 and 3 of the production cycle, with estimated RTS of 0.613, 1.384 and-0.235, respectively.
The Influence of Micro-Credit on Poverty Alleviation among Rural Dwellers: Case Study of Akoko North West Local Government Area of Ondo State, Nigeria
M.M. Fasoranti
Journal of Economics Theory , 2012, DOI: 10.3923/jeth.2010.1.8
Abstract: The study which was conducted in Akoko North West Area of Ondo State, examined the influence of micro credit on poverty alleviation among rural areas. The study among other things examined the socio-economic characteristics of respondents, activities of the Ondo State Micro Credit Agency (OSMA) and the influence of micro credit on some selected macroeconomic variables of respondents. Data was sourced with the aid of well structured questionnaires from 120 respondents randomly selected from Arigidi and Okeagbe. The data collected was analysed majorly with the aid of descriptive statistics. Findings show that the incidence of poverty was high among the economically active age bracket as the mean age was 33 years. Result also, showed that all respondents acquired formal education as 60% had above primary school education. Also, 39.2% of total respondents had no specific occupation before the inception of the scheme. Moreover, the scheme had positive influence on respondents major macroeconomic variables namely income, savings, consumption expenditures and asset acquisition. Among other things, the level of poverty was high as reflected in the type of residence, cooking materials, health institutions attended by respondents and educational institutions attended by their children. Generally, 20.8, 30.9, 47.5 and 0.8% rated the programme good, poor, fair and excellent, respectively. The study recommends a greater coverage of the state by the scheme. Recipients should also be encouraged to reinvest their profits in other productive economic activities.
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