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Search Results: 1 - 10 of 5684 matches for " Renato;Cecato "
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Dynamics of yield and nutritional value for winter forage intercropping
Paris, Wagner;Marchesan, Renato;Cecato, Ulysses;Martin, Thomas Newton;Ziech, Magnos Fernando;Borges, Gisele Daiane Silveira;
Acta Scientiarum. Animal Sciences , 2012, DOI: 10.4025/actascianimsci.v34i2.11507
Abstract: the work was carried out to assess mass production and nutritional content of winter forages using lopsided oat (avena strigosa) and white oat (avena sativa) intercropped with ryegrass (lolium multiflorum) and vetch (vicia sativa l.). the species were intercropped as the following treatments: lopsided oat with ryegrass (lo+rg); white oat with ryegrass (co+rg); lopsided oat with vetch (lo+v); white oat with vetch (co+v); lopsided oat, vetch and ryegrass (lo+rg+v); and white oat, ryegrass and vetch (co+rg+v). the study evaluated total forage mass production of each intercropping and crude protein levels, neutral detergent fiber and in vitro digestibility coefficient of dry matter. the results indicate that forage yield of oats was higher in early assessments, and ryegrass and vetch were higher in the final evaluation period. the crude protein levels and neutral detergent fiber were higher at the start of the experiment for all evaluated treatments, and those including vetch intercropped with oats showed an increase in these parameters in the final period due to the presence of vetch, which has a more delayed cycle.
Evaluation of Montreal cognitive assessment for the differential diagnosis of mild cognitive impairment and Alzheimer’s disease in elderly patients with more than 5 years of schooling: Data from a Brazilian sample  [PDF]
José M. Montiel, Juliana F. Cecato, Daniel Bartholomeu, José Eduardo Martinelli
Advances in Aging Research (AAR) , 2013, DOI: 10.4236/aar.2013.24018

Background: Diagnostic investigation of dementia is based on a series of tests which lie the neuropsychological evaluations. The Montreal Cognitive Assessment (MoCA) was developed as an instrument to recognize Mild Cognitive Impairment (MCI) and initial cases of Alzheimer’s disease. The present study aims to evaluate the predictive value of Brazilian MoCA test version in a sample of elderly above 5 years of education. Methods: Cross-sectional study with 136 elderly, above 60 years old at least 5 years of education. Diagnostic criteria is based on clinical and neuropsychological data classified Alzheimer’s disease n = 52, MCI n = 45 e normal controls n = 39. MoCA test was compared with Cambridge Cognitive Examination, Mini-Mental State Exam, Verbal Fluency, Clock Drawing Test, Geriatric Depression Scale and Pfeffer Functional Activities Questionnaire. Accuracy was evaluated by receiver operating characteristic (ROC) curve analyses. Pearson correlation coefficient was used to compare the MoCA with the other tests. It was also used logistic regression analysis to identify the main risk factors for the diagnostic groups. Results: MoCA was the best test to differentiate Alzheimer’s disease cases from MCI with 86.5% sensitivity and 75.6% specificity. Furthermore, analyzes of correlation test showed that MoCA correlates robust way of already validated with other tests and wide application inBrazil. Conclusions: It can be concluded that MoCA is a good screening tool for investigation of MCI among the elderly in Brazil with over 5 years of schooling. Studies with larger numbers of participants are needed to further validate the test also for elderly people with low education.

Cognitive Impairment in Alzheimer’s Disease: Longitudinal Data from Brazilian Elderly  [PDF]
Daniel Bartholomeu, Juliana Francisca Cecato, José Eduardo Martinelli, José Maria Montiel
Advances in Aging Research (AAR) , 2014, DOI: 10.4236/aar.2014.32025

Research on cognitive aging is becoming increasingly common because aging is a global phenomenon and brings with it many challenges, for example, the increased incidence of dementias such as Alzheimer’s Disease (AD). Even if the cognitive decline in AD is apparently linear, impairment of autonomy in activities of daily living does not follow the same pattern. Objectives: To monitor and evaluate the cognitive aspects of elderly diagnosed with Alzheimer’s disease. Methodological procedures: This research was conducted from January 2006 to July 2013 at the Clinic of Geriatrics and Gerontology. Longitudinal study of 51 elderly patients aged 60 years, of both sexes who received a diagnosis of Alzheimer’s disease by DSM-IV (APA, 1994) and NINDS-ADRDA (McKhann et al., 2011). Results: From the results obtained in the present study, we observed that the participants had a decline in cognitive function from the first to the second assessment, even with drug treatment.

Some Remarks on Energy Storage and Energetic Complementarity  [PDF]
Renato M. Brito
Energy and Power Engineering (EPE) , 2017, DOI: 10.4236/epe.2017.99031
Abstract: This letter to the editor presents some notes related to the technological and economic limitations of the means actually available for energy storage and highlights the role that can be played by the notion of energetic complementarity in order to make feasible alternatives for a better use of the energy resources at our disposal. The notion of complementarity may represent a major advance in the design of energy generation projects, but its application depends on a broader conception of the projects and the contexts in which they are included.
Production and quality of coastcross conserted forage groundnut under nitrogen fertilization and different grazing layers Produ o e qualidade da consorcia o de coastcross com amendoim forrageiro adubada com nitrogênio em diferentes estratos sob pastejo
Ulysses Cecato,Wagner Paris,Claudio Roma,Veridiana Lim?o
Revista Brasileira de Saúde e Produ??o Animal , 2011,
Abstract: The objective was to evaluate the forage mass production and quality in the morphologic components in different layers of coastcross grass (Cynodon dactylon [L.] Pers cv Coastcross-1) in consortium with forage Groundnut (Arachis pintoi Krapovikas y Gregory cv. Amarillo) with and without N fertilization. The treatments were: coastcross + forage groundnut without N (CA0); with 100kg/ha of N (CA100); with 200 kg/ha of N (CA200); and coastcross exclusively with 200kg/ha of N per year (C200) in the spring, summer and fall. It was used a randomized block design in a split plot. The layers were from zero to 7cm above the soil, 8 to 14cm, and above 15cm. In the lower layers there was higher total forage mass production. For the grass fractions there was no difference in the lower and higher layers however it was observed highter mass production with highest levels of fertilization. The senescent material was higher in fall. The intermediate layer showed superior values in the spring and fall compared to summer as a result of grazing in this layer be constituted of highest percentage of culms witch presented highest quality. The quality values were higher in treatments with nitrogen fertilization. Objetivou-se avaliar a massa de forragem e qualidade bromatológica dos componentes morfológicos nos diferentes estratos do pasto de coastcross (Cynodon dactylon [L.] Pers cv Coastcross-1) em consorcio com amendoim forrageiro (Arachis pintoi Krapovikas y Gregory cv Amarillo) com e sem utiliza o de N. Os tratamentos foram: coastcross + amendoim forrageiro sem nitrogênio (CA0); com 100kg/ha de N (CA100); com 200kg/ha de N (CA200) e coastcross exclusiva com 200kg/ha de N por ano (C200) na primavera, ver o e outono. Utilizou-se um delineamento em blocos casualizados em esquema de parcelas subdivididas. Os estratos foram de zero a 7cm a partir do solo, de 8 a 14cm e acima de 15cm. Nos estratos inferiores verificou-se maior MF. Para as fra es da gramínea n o houve diferen as nos estratos mais baixos e altos, porém nos tratamentos com maiores níveis de aduba o a massa de forragem foi superior. O material senescente foi superior no outono. O estrato intermediário apresentou valores superiores na primavera e outono comparados ao ver o, consequência do pastejo deste estrato estar constituído de maior percentagem de colmos. O valor nutritivo foi superior nos tratamentos que receberam aduba o nitrogenada.
Desempenho de bovinos em capim-tanzania adubado com nitrogênio ou consorciado com Estilosantes Performance of beef cattle grazing Tanzania grass fertilized with nitrogen or intercropped with Stylo
Ossival Lolato Ribeiro,Ulysses Cecato,Bruno Shigueo Iwamoto,Alyson Pinheiro
Revista Brasileira de Saúde e Produ??o Animal , 2011,
Abstract: Com este estudo objetivou-se avaliar a massa seca de forragem e laminas foliares, ganho médio diário, taxa de lota o e ganho de peso vivo em capim-tanzania (Panicum maximum Jacq.) no período de novembro de 2008 a julho de 2009 sob lota o contínua. Utilizou-se delineamento experimental em blocos ao acaso em parcela subdivididas, com três repeti es, e como tratamentos: Tanzania + Estilosantes Campo Grande; Tanzania + 75kg/ha de N; Tanzania + 150kg/ha de N e Tanzania + 225kg/ha de N, e nas sub-parcelas os períodos do ano: primavera, ver o e outono. No ver o, a massa seca de forragem e laminas foliares foram superiores à primavera e outono. O tratamento com 225kg de N apresentou maior massa seca de forragem e massa seca de laminas foliares no ver o e outono. Obteve-se maior ganho médio diário no ver o. Na primavera e no ver o n o houve diferen a entre os tratamentos para o ganho médio diário, e no outono o tratamento com 225kg/ha de N foi superior. A taxa de lota o foi semelhante no ver o e outono, e menor na primavera. O tratamento com 225kg de N apresentou maior taxa de lota o na primavera e ver o. O tratamento com 225kg de N apresentou maior ganho de peso vivo no outono, na primavera e ver o o 150 kg de N foi semelhante. A disponibilidade de massa seca de forragem e o desempenho animal proporcionado pelo Estilosantes foram equivalentes à aduba o nitrogenada até a dose de 75kg de N. This study aimed to evaluate the dry mass of forage and leaf blade dry mass, average daily gain, stocking rate and live weight gain in Tanzania grass (Panicum maximum Jacq.) from November/2008 to July/2009, on continuous stocking. The experimental design was a split-plot arrangement in a randomized blocks design, with three replications and four treatments: Tanzania + Campo Grande Stylo; Tanzania + 75kg/ha of N; Tanzania + 150kg/ha of N and Tanzania + 225kg/ha of N, subplots were the seasons of the year: Spring, Summer and Autumn. The forage dry mass and leaf blade dry mass was higher in Summer compared to Spring and Autumn. The treatment with 225kg of N presented higher dry mass of forage and leaf blade dry mass in Summer and Autumn. It was obtained the higher average daily gain in the Summer. In the Spring and Summer no differences were observed for average daily gain, but in the Autumn the treatment with 225kg/ha of N was the best. The stocking rate was similar in Summer and Autumn, but lower in Spring. The treatment with 225kg of N presented the higher stocking rate in Spring and Summer. The treatment with 225kg of N presented the higher live weight gain in Autumn, w
The use of N-alkanes to estimate intake and digestibility of coastcross-1 and Arachis pintoi mixed pasture Uso de N-alcanos para estimar o consumo e a digestibilidade da pastagem de coastcross-1 consorciada com "Arachis pintoi"
Wagner Paris,Ulysses Cecato,Nelson Fukumoto,Julio Cesar Damasceno
Revista Brasileira de Saúde e Produ??o Animal , 2009,
Abstract: The trial was carried out to evaluate the alkanes (C27 to C35) profile, dry matter intake and digestibility of Coastcross-1 and Arachis pintoi mixed pasture with or without nitrogen fertilization in two periods (December/2003 and April/2004). The treatments evaluated were: CA0 = Coastcross + Arachis pintoi without N; CA100 = Coastcross + Arachis pintoi with 100 kg of N; CA200 = Coastcross + Arachis pintoi with 200 kg of N and C200 = Coastcross with 200 kg of N. The experimental period was composed by 8 days, with 3 days for marker administration (C32 in cellulose pelets) and 5 days for fecal collection, directly from animal rectum. Sixteen animals were used and maintained on grazed area since June 2003. From December to April, for pasture constituents, there was predominance of n-alkanes with odd chain, mainly for those with higher length chain (C29, C31 and C33), excepting leaves blade of Coastcross that presented the C27 alkane in higher concentration than C33. The highest amounts of n-alkanes C31 and C33 occurred during December. Animal’s intake and DMD did not present differences (P>0.05). The values of DMD using n-alkanes were similar to in vitro DMD of leaves blade from Coastcross. O experimento foi realizado com o objetivo de determinar o perfil dos alcanos (C27 a C35), o consumo e a digestibilidade da matéria seca do pasto de Coastcross-1 consorciada com Arachis pintoi com e sem aduba o nitrogenada em dois períodos (dezembro/2003 e abril/2004). Os tratamentos avaliados foram: CA0 = Coastcross + Arachis pintoi sem N; CA100 = Coastcross + Arachis pintoi com 100 Kg de N; CA200 = Coastcross + Arachis pintoi com 200 kg de N e C200 = Coastcross com 200 kg de N. O período experimental foi de 8 dias, 3 dias para o indicador administrado (C32 em peletes de celulose) e 5 dias de coleta de fezes, diretamente no reto do animal. Utilizou-se um delineamento em blocos ao acaso com duas repeti es. Foram utilizadas 16 novilhas cruzadas. Nos períodos de dezembro e abril, para os constituintes do pasto, houve predomínio dos n-alcanos de cadeia ímpar, principalmente para aqueles de maior comprimento de cadeia (C29, C31 e C33), exce o para as laminas foliares da Coastcross que apresentou o alcano C27 em maior concentra o do que o C33. As maiores quantidades de n-alcanos C31 e C33 ocorreram no mês de dezembro. O consumo dos animais e a digestibilidade do pasto n o apresentaram diferen as (P>0,05). Os valores dos CDMS, com utiliza o dos n-alcanos, foram semelhantes aos CDMS in vitro das laminas foliares da Coastcross
On the orthogonalization of arbitrary Boolean formulae
Renato Bruni
Advances in Decision Sciences , 2005, DOI: 10.1155/jamds.2005.61
Abstract: The orthogonal conjunctive normal form of a Boolean function is a conjunctive normal form in which any two clauses contain at least a pair of complementary literals. Orthogonal disjunctive normal form is defined similarly. Orthogonalization is the process of transforming the normal form of a Boolean function to orthogonal normal form. The problem is of great relevance in several applications, for example, in the reliability theory. Moreover, such problem is strongly connected with the well-known propositional satisfiability problem. Therefore, important complexity issues are involved. A general procedure for transforming an arbitrary CNF or DNF to an orthogonal one is proposed. Such procedure is tested on randomly generated Boolean formulae.
Potential Energy Surfaces Using Algebraic Methods Based on Unitary Groups
Renato Lemus
Advances in Physical Chemistry , 2011, DOI: 10.1155/2011/593872
Abstract: This contribution reviews the recent advances to estimate the potential energy surfaces through algebraic methods based on the unitary groups used to describe the molecular vibrational degrees of freedom. The basic idea is to introduce the unitary group approach in the context of the traditional approach, where the Hamiltonian is expanded in terms of coordinates and momenta. In the presentation of this paper, several representative molecular systems that permit to illustrate both the different algebraic approaches as well as the usual problems encountered in the vibrational description in terms of internal coordinates are presented. Methods based on coherent states are also discussed. 1. Introduction The description of molecular systems involves the solution of the corresponding Schr?dinger equation. This task is so difficult that an approach involving just numerical methods needs powerful computers even for three-or four-particle systems. An alternative approach is based on choosing the basis functions in such a way that they resemble the exact eigenfunctions as much as possible. The suitable basis are obtained by making approximations that simplify the Hamiltonian of the molecule. The advantage of this method is that the functions reproduce correctly the gross features of the spectrum, and consequently they provide a better physical insight in understanding the solutions. The first step in simplifying the molecular problem consists in taking advantage of the large difference between the nucleus and electron masses, a fact that leads to the Born-Oppenheimer approximation [1, 2]. As a result of this approximation the original Schr?dinger equation is split into two coupled equations, one corresponding to the electronic degrees of freedom which is solved for many nuclear geometries and the other one associated with the rotation-vibration Schr?dinger equation for the nuclei whose potential is basically provided by the electronic energy [3, 4]. On the other hand, the rotation-vibration Schr?dinger equation is usually solved making the rigid-rotor approximation together with the harmonic oscillator approximation. The total wave function is then approximated as the direct product of three contributions: electronic, rotational, and vibrational wave functions. Corrections to this description are allowed by introducing the braking of the Born-Oppenheimer approximation, distortion effects, anharmonicity, centrifugal distortion, and Coriolis coupling [3–5]. Within the Born-Oppenheimer approximation the potential energy surface (PES) is provided by the solution of
Ecological Gradients Influencing Waterbird Communities in Black Water Lakes in the Anavilhanas Archipelago, Central Amazonia
Renato Cintra
International Journal of Ecology , 2012, DOI: 10.1155/2012/801683
Abstract: For the first time, and in a large spatial scale, the influence of ecological properties on the aquatic bird community of black water lakes in Brazilian Amazonia is evaluated. Bird surveys were conducted in 45 lakes. A total of 3626 individuals in 48 bird species were recorded; of these, 31 are aquatic, and 18 of these are primarily piscivorous. Bird richness and abundance were not significantly related to lake shape and productivity but were influenced by hydrological period (low versus high), water depth, transparency, lake isolation, and habitat richness. Matrices of bird species by lake were subjected to multivariate analyses (NMDS) to evaluate how these parameters influence bird community. The variation in bird species composition was positively correlated to lake depth and isolation and negatively correlated to water transparency and habitat richness. The results indicate that period, lake physical characteristics (depth, water transparency), isolation, and habitat richness are determinants of aquatic bird community composition in the black water lake systems of Amazonia.
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