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Search Results: 1 - 10 of 52487 matches for " Manuela Silva Libanio Tosto "
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Chemical and estimative energy composition of forage cactus meal and of dehydrated grapes residue Composi o química e estimativa de energia da palma forrageira e do resíduo desidratado de vitivinícolas
Manuela Silva Libanio Tosto,Gherman Garcia leal de Araújo,Ronaldo Lopes Oliveira,Adriana Regina Bagaldo
Revista Brasileira de Saúde e Produ??o Animal , 2007,
Abstract: Due to importance of the nutritional value of feedstuffs and the impossibility of measuring the available energy by simple and fast assays, this study had as objective the energy estimates and to compare the chemical composition of the forage cactus meal and the dehydrated grapes residue, with other forages and residues regionally available at Brazilian north-eastern. The results were evaluated by descriptive statistics. Estimated values of energy for the forage cactus were 61.84% for total digestible nutrients; 2.65; 2.23; 1.36 and 0.79 Mcal/kg of digestible energy, metabolic energy of production, liquid energy of maintenance and production, respectively. The dehydrated grapes residue presented values of estimates energy of 48.30% of total digestible nutrients; 2.16; 1.73; 0.89 and 0.35 Mcal/kg of digestible energy, metabolic energy of production, liquid energy of maintenance and production, respectively. Forage cactus is an energy source of high potentiality for the ruminant nutrition, especially for the Brazilian north-eastern. Low energy values and high levels of neutral detergent fiber and lignin in the dehydrated grapes residue confer the characteristics of roughage, however, for substituting others roughage sources, others studies should be done. Devido à importancia do valor nutritivo dos alimentos e a impossibilidade de se medir a energia disponível por meio de analises rápidas e simples, este trabalho teve como objetivo estimar a energia e comparar a composi o químico-bromatológica da palma forrageira e do resíduo desidratado de vitivinícolas, com outras forrageiras e com resíduos disponíveis regionalmente no Nordeste brasileiro. Os resultados foram avaliados por estatística descritiva. Os valores estimados de energia para a palma forrageira foram de 61,84% de nutrientes digestíveis totais; 2,65; 2,23; 1,36 e 0,79 Mcal/kg de energia digestível, energia metabólica de produ o, energia líquida de manten a e de produ o, respectivamente. O resíduo desidratado de vitivinícola apresentou valores de energia estimada de 48,30% de nutrientes digestíveis totais; 2,16; 1,73; 0,89 e 0,35 Mcal/kg de energia digestível, de energia metabólica de produ o, de energia líquida de manten a e de produ o, respectivamente. A palma forrageira é uma fonte energética de grande potencialidade para a nutri o de ruminantes, principalmente, no Nordeste brasileiro. Os baixos valores energéticos e os altos teores de fibra em detergente neutro e de lignina do resíduo desidratado de vitivinícola conferem a estes características de volumoso e para substituir outras fontes
Utiliza??o de uréia no resíduo desidratado de vitivinícola associado à palma forrageira na alimenta??o de caprinos: consumo e digestibilidade de nutrientes
Tosto, Manuela Silva Libanio;Araújo, Gherman Garcia Leal de;Oliveira, Ronaldo Lopes;Jaeger, Soraya Maria Palma Luz;Menezes, Daniel Ribeiro;Dantas, Fabiana Rodrigues;
Revista Brasileira de Zootecnia , 2008, DOI: 10.1590/S1516-35982008001000025
Abstract: the effect of the addition of 0.0, 0.5, 1.0 and 1.5% of urea to dehydrated vineyards residue, associated to forage cactus palm in the feeding of goats on intake and nutrient digestibility was evaluated. twenty-four castrated crossbred goats, without defined breed, with average 18 kg of bw were distributed to a randomized block design according to the body weight. the addition of increasing levels of urea to dehydrated vineyards residue increased intakes of dry matter (dm), organic matter (om), crude protein (cp) and neutral detergent fiber (ndf), in kg/day, %bw and g/kg bw0.75. there was a linear increase intake of total digestible nutrients (tdn), total carbohydrates (tc) and non-fiber carbohydrates (nfc), in % bw and g/kg bw0.75. there was no difference in the intakes of tdn, tc and nfc, in kg/day, with means of 0.363, 0.575 and 0.258, respectively. however, the addition of urea to the residue did not affect the coefficients of digestibility of dm, mo and ndf, with means of 48.13, 46.08 and 20.37% respectively. the digestibility coefficients nfc showed linear increase, while cp showed quadratic behavior, with maximum at 48.93%, with the addition of 1.3% of urea to the residue. use of urea in the dehydrated vineyards residue linearly increased the intake of nutrients, however, the level of 1.3% is the most appropriate, since promotes better digestibility of the crude protein of the diets containing this alternative feed.
Black Body Quantum Fluctuations and Relativity  [PDF]
Sebastiano Tosto
Journal of Modern Physics (JMP) , 2016, DOI: 10.4236/jmp.2016.713152
Abstract: The paper introduces a simple theoretical model aimed to provide a possible derivation of the quantum fluctuations of the black body radiation. The model offers the chance of inferring and linking contextually quantum and relativistic results.
Reappraising 1907 Einstein’s Model of Specific Heat  [PDF]
Sebastiano Tosto
Open Journal of Physical Chemistry (OJPC) , 2016, DOI: 10.4236/ojpc.2016.64011
Abstract: This article emphasizes that the Einstein and Debye models of specific heats of solids are correlated more tightly than currently acknowledged. This correlation is evidenced without need of additional hypotheses on the early Einstein model. The results are also extensible to the case of a system of fermions; as an example, the specific heat of the electron sea in metals is inferred in the frame of the proposed approach only.
Many Electron Atoms: Ionization Energies of Transition Elements  [PDF]
Sebastiano Tosto
Open Journal of Physical Chemistry (OJPC) , 2017, DOI: 10.4236/ojpc.2017.73007
Abstract: The paper introduces a theoretical model aimed to calculate the ionization energies of many electron atoms and their ions. The validity of the model, which implements the statistical formulation of the quantum uncertainty to infer a simple formula of ionization energy, has been already proven in a previous paper comparing systematically experimental and calculated values for elements with atomic numbers 2Z≤29, whose electron configurations include all ions with numbers ne of electrons 2neZ. The present paper enhances and extends the results previously obtained; the approach is now generalized to include even the transition elements and in particular the lanthanides and actinides. The validity of the proposed model is proven examining all experimental data of ionization energies of these elements and their ions available in literature.
Evolution, Quantization, Relativity: An “Ab Initio” Model  [PDF]
Sebastiano Tosto
Journal of Modern Physics (JMP) , 2018, DOI: 10.4236/jmp.2018.914161
Abstract: “\"\"= everything flows”, Eraclitus, (Ephesus, 535-475 B.C.). If really in Nature everything changes and progresses, then at least two questions arise: 1) how can be these changes entropic but nonetheless somehow predictable without risk of oxymoronic behavior; 2) how can Science conform itself to follow this requirement of the Nature. To attempt an answer to these questions, the present paper introduces an ab initio theoretical model aimed to show that physical information is actually nothing else but straightforward quantum and relativistic implication of the concept of evolution.
A crise vista de baixo
Manuela Silva
Economia Global e Gest?o , 2009,
Interactive media platform for knowledge and preservation of environmental and architectural heritage in the Mediterranean area, with particular reference to the Maghreb region. Piattaforma multimediale e interattiva, per la conoscenza e la salvaguardia del patrimonio Ambientale ed Architettonico in area Mediterranea con particolare riferimento alla regione del Maghreb.
Domenico Tosto
Abstract: Today the system of global communication is the most important information tool. Inside are and will be provided numerous application areas, among them certainly occupies a place of great importance to safeguard cultural heritage. Interaction between cultural and new technologies, surely, will create many opportunities in conservation, ommunication and economic development for what concerns the rich historical and artistic heritage in the Mediterranean area. The Mediterranean basin, and particularly the area of the Maghreb have a vast repertoire of useful cases to test survey methods, theories and techniques for understanding, recovery and preservation of architectural works of significant historical and cultural importance. The term Maghreb (Arabic for “West”) identifies the region of North Africa that includes Morocco, Algeria, Tunisia, Libya, Egypt. La salvaguardia del patrimonio culturale, storico e architettonico occupa un posizione di rilievo all’interno dei diversi campi di applicazione che riguardano la comunicazione globale. La società attuale trova al giorno d’oggi nella comunicazione globale il più importante strumento di informazione. Dall’interazione tra beni culturali e nuove tecnologie, sicuramente, potranno crearsi numerose opportunità a livello conservativo, comunicativo e di sviluppo economico per quello che riguarda il ricchissimo patrimonio storico-artistico presente nel Mediterraneo. Il bacino mediterraneo ed in particolar modo l’area del Maghreb offre un vastissimo repertorio di casi utili per sperimentare metodi di indagine, teorie e tecniche utili per la comprensione, il recupero e la salvaguardia di impianti architettonici di rilevante importanza storico-culturale. Con il termine Maghreb (che in arabo significa “occidente”) si identifica l’intera regione dell’Africa settentrionale che comprende Marocco, Algeria, Tunisia, Libia, Egitto.
Quantum Uncertainty and Fundamental Interactions
Tosto S.
Progress in Physics , 2013,
Abstract: The paper proposes a simplified theoretical approach to infer some essential concepts on the fundamental interactions between charged particles and their relative strengths at comparable energies by exploiting the quantum uncertainty only. The worth of the present approach relies on the way of obtaining the results, rather than on the results themselves: concepts today acknowledged as fingerprints of the electroweak and strong interactions appear indeed rooted in the same theoretical frame including also the basic principles of special and general relativity along with the gravity force.
An Analysis of States in the Phase Space: Uncertainty, Entropy and Diffusion
Tosto S.
Progress in Physics , 2011,
Abstract: The paper aims to show the physical link between Fick’s laws and entropy increase in an isolated diusion system, initially inhomogeneous and out of the thermodynamic equilibrium, within which transport of matter is allowed to occur. Both the concentration gradient law and the entropic terms characterizing the diusion process are inferred from the uncertainty equations of statistical quantum mechanics. The approach is very general and holds for diusion systems in solid, liquid and gas phases.
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