Dans cette thèse, on étude le complexe des cycles proches d'un faisceau l-adique sur un schéma au-dessus d'un trait en utilisant la théorie de ramification d'Abbes et Saito. La première partie est consacrée à une nouvelle preuve d'une formule de Deligne et Kato qui calcule la dimension du complexe des cycles proches d'un faisceau l-adique sur une courbe relative lisse au-dessus d'un trait strictement local. Deligne a considéré le cas où le faisceau n'a pas de ramification verticale, et Kato a traité le cas général. Notre approche est basée sur une notion locale de cycle caractéristiquedéfinie grâce au conducteur de Swan raffiné d'Abbes et Saito. Dans la deuxième partie, on démontre une formule qui calcule le conducteur de Swan de la cohomologie du complexe des cycles proches d'un faisceau l-adique sur une variété lisse au-dessus d'un trait d'égale caractéristique, vérifiant une certaine condition de ramification. Tsushima a introduit la classe caractéristique raffinée du faisceau et il a démontré qu'elle calcule le conducteur de Swan de la cohomologie du complexe de ses cycles proches par une formule du type Lefschetz-Verdier. On calcule la classe caractéristique raffinée comme un produit d'intersection sur le fibré cotangent logarithmique de la variété faisant apparaître le cycle caractéristique du faisceau défini par Abbes et Saito et la section nulle. / In this thesis, we study the nearby cycle complex of an l-adic sheaf on a scheme over a trait, using ramification theory of Abbes and Saito. The first part is devoted to a new proof of a formula of Deligne and Kato that computes the dimension of the stalks of the nearby cycle complex of an l-adic sheaf on a smooth relative curve over a strictly local trait. Deligne considered the case where the sheaf has no vertical ramification and Kato extended the formula to the general case. Our approach is based on a local notion of characteristic cycle defined using the refined Swan conductor of Abbes and Saito. In the second part, we prove a formula that computes the Swan conductor of the cohomology of the nearby cycle complex of an l-adic sheaf on a smooth variety over a trait of equal characteristic, satisfying a certain ramification condition. Tsushima introduced the refined characteristic class of the sheaf and he proved that it computes the Swan conductor of the cohomology of its nearby cycle complex by a Lefschetz-Verdier type formula.We compute the refined characteristic class as an intersection product on the logarithmic cotangent bundle of the variety, involving the characteristic cycle of the sheaf defined by Abbes and Saito and the zero section.

Details are given herein of the development, refinement and application of a higher-order accurate 3-D finite difference model for non-cohesive suspended sediment transport processes, in non-stratified estuarine and coastal waters. The velocity fields are computed using a 2-D horizontal depth-integrated model, in combination with either an assumed logarithmic velocity profile or a velocity profile obtained from field data. Also, for convenience in handling variable bed topographies and for better vertical resolution, a δ-stretching co-ordinate system has been used. In order to gain insight into the relative merits of various numerical schemes for modelling the convection of high concentration gradients, in terms of both accuracy and efficiency, thirty six existing finite difference schemes and two splitting techniques have been reviewed and compared by applying them to the following cases: i) 1-D and 2-D pure convection, ii) 1-D and 2-D convection and diffusion, and iii) 1-D non-linear Burger's equation. Modifications to some of the considered schemes have also been proposed, together with two new higher-order accurate finite difference schemes for modelling the convection of high concentration gradients. The schemes were derived using a piecewise cubic interpolation and an universal limiter (proposed scheme 1) or a modified form of the TVD filter (proposed scheme 2). The schemes have been tested for: i) 1-D and 2-D pure convection, and ii) 2-D convection and diffusion problems. The schemes have produced accurate, oscillation-free and non-clipped solutions, comparable with the ULTIMATE fifth- and sixth-order schemes. However, the proposed schemes need only three (proposed scheme 1) or five cell stencils. Hence, they are very attractive and can be easily implemented to solve convection dominated problems for complex bathymetries with flooding and drying. The 3-D sediment transport equation was solved using a splitting technique, with two different techniques being considered. With this technique the 3-D convective-diffusion equation for suspended sediment fluxes was split into consecutive 1-D convection, diffusion and convective-diffusion equations. The modified and proposed higher-order accurate finite difference schemes mentioned above were then used to solve the consecutive 1-D equations. The model has been calibrated and verified by applying it to predict the development of suspended sediment concentration profiles under non-equilibrium conditions in three test flumes. The results of numerical predictions were compared with existing analytical solutions and experimental data. The numerical results were in excellent agreement with the analytical solutions and were in reasonable agreement with the experimental data. Finally, the model has also been applied to predict sediment concentration and velocity profiles in the Humber Estuary, UK. Reasonable agreement was obtained between the model predictions and the corresponding field measurements, particularly when considered in the light of usual sediment transport predictions. The model is therefore thought to be a potentially useful tool for hydraulic engineers involved in practical case studies

In the oil industry, there is a special class of pipelines used for the transportation of refined products. The problem of sequencing the inputs to be pumped through this type of pipeline seeks to generate the optimal sequence of batches of products and their destination as well as the amount of product to be pumped such that the total operational cost of the system, or another operational objective, is optimized while satisfying the product demands according to the requirements set by the customers. This dissertation introduces a new modeling approach and proposes a solution methodology for this problem capable of dealing with the topology of all the scenarios reported in the literature so far. The system representation is based on a 1-0 multi commodity network flow formulation that models the dynamics of the system, including aspects such as conservation of product flow constraints at the depots, travel time of products from the refinery to their depot destination and what happens upstream and downstream the line whenever a product is being received at a given depot while another one is being injected into the line at the refinery. It is assumed that the products are already available at the refinery and their demand at each depot is deterministic and known beforehand. The model provides the sequence, the amounts, the destination and the trazability of the shipped batches of different products from their sources to their destinations during the entire horizon planning period while seeking the optimization of pumping and inventory holding costs satisfying the time window constraints. A survey for the available literature is presented. Given the problem structure, a decomposition based solution procedure is explored with the intention of exploiting the network structure using the network simplex method. A branch and bound algorithm that exploits the dynamics of the system assigning priorities for branching to a selected set of variables is proposed and its computational results for the solution, obtained via GAMS/CPLEX, of the formulation for random instances of the problem of different sizes are presented. Future research directions on this field are proposed.

Which tensor fields G on a smooth manifold M can serve as a spacetime structure? In the first part of this thesis, it is found that only a severely restricted class of tensor fields can provide classical spacetime geometries, namely those that can carry predictive, interpretable and quantizable matter dynamics. The obvious dependence of this characterization of admissible tensorial spacetime geometries on specific matter is not a weakness, but rather presents an insight: it was Maxwell theory that justified Einstein to promote Lorentzian manifolds to the status of a spacetime geometry. Any matter that does not mimick the structure of Maxwell theory, will force us to choose another geometry on which the matter dynamics of interest are predictive, interpretable and quantizable. These three physical conditions on matter impose three corresponding algebraic conditions on the totally symmetric contravariant coefficient tensor field P that determines the principal symbol of the matter field equations in terms of the geometric tensor G: the tensor field P must be hyperbolic, time-orientable and energy-distinguishing. Remarkably, these physically necessary conditions on the geometry are mathematically already sufficient to realize all kinematical constructions familiar from Lorentzian geometry, for precisely the same structural reasons. This we were able to show employing a subtle interplay of convex analysis, the theory of partial differential equations and real algebraic geometry. In the second part of this thesis, we then explore general properties of any hyperbolic, time-orientable and energy-distinguishing tensorial geometry. Physically most important are the construction of freely falling non-rotating laboratories, the appearance of admissible modified dispersion relations to particular observers, and the identification of a mechanism that explains why massive particles that are faster than some massless particles can radiate off energy until they are slower than all massless particles in any hyperbolic, time-orientable and energy-distinguishing geometry. In the third part of the thesis, we explore how tensorial spacetime geometries fare when one wants to quantize particles and fields on them. This study is motivated, in part, in order to provide the tools to calculate the rate at which superluminal particles radiate off energy to become infraluminal, as explained above. Remarkably, it is again the three geometric conditions of hyperbolicity, time-orientability and energy-distinguishability that allow the quantization of general linear electrodynamics on an area metric spacetime and the quantization of massive point particles obeying any admissible dispersion relation. We explore the issue of field equations of all possible derivative order in rather systematic fashion, and prove a practically most useful theorem that determines Dirac algebras allowing the reduction of derivative orders. The final part of the thesis presents the sketch of a truly remarkable result that was obtained building on the work of the present thesis. Particularly based on the subtle duality maps between momenta and velocities in general tensorial spacetimes, it could be shown that gravitational dynamics for hyperbolic, time-orientable and energy distinguishable geometries need not be postulated, but the formidable physical problem of their construction can be reduced to a mere mathematical task: the solution of a system of homogeneous linear partial differential equations. This far-reaching physical result on modified gravity theories is a direct, but difficult to derive, outcome of the findings in the present thesis. Throughout the thesis, the abstract theory is illustrated through instructive examples. / Welche Tensorfelder G auf einer glatten Mannigfaltigkeit M können eine Raumzeit-Geometrie beschreiben? Im ersten Teil dieser Dissertation wird es gezeigt, dass nur stark eingeschränkte Klassen von Tensorfeldern eine Raumzeit-Geometrie darstellen können, nämlich Tensorfelder, die eine prädiktive, interpretierbare und quantisierbare Dynamik für Materiefelder ermöglichen. Die offensichtliche Abhängigkeit dieser Charakterisierung erlaubter tensorieller Raumzeiten von einer spezifischen Materiefelder-Dynamik ist keine Schwäche der Theorie, sondern ist letztlich genau das Prinzip, das die üblicherweise betrachteten Lorentzschen Mannigfaltigkeiten auszeichnet: diese stellen die metrische Geometrie dar, welche die Maxwellsche Elektrodynamik prädiktiv, interpretierbar und quantisierbar macht. Materiefeld-Dynamiken, welche die kausale Struktur von Maxwell-Elektrodynamik nicht respektieren, zwingen uns, eine andere Geometrie auszuwählen, auf der die Materiefelder-Dynamik aber immer noch prädiktiv, interpretierbar und quantisierbar sein muss. Diesen drei Voraussetzungen an die Materie entsprechen drei algebraische Voraussetzungen an das total symmetrische kontravariante Tensorfeld P, welches das Prinzipalpolynom der Materiefeldgleichungen (ausgedrückt durch das grundlegende Tensorfeld G) bestimmt: das Tensorfeld P muss hyperbolisch, zeitorientierbar und energie-differenzierend sein. Diese drei notwendigen Bedingungen an die Geometrie genügen, um alle aus der Lorentzschen Geometrie bekannten kinematischen Konstruktionen zu realisieren. Dies zeigen wir im ersten Teil der vorliegenden Arbeit unter Verwendung eines teilweise recht subtilen Wechselspiels zwischen konvexer Analysis, der Theorie partieller Differentialgleichungen und reeller algebraischer Geometrie. Im zweiten Teil dieser Dissertation erforschen wir allgemeine Eigenschaften aller solcher hyperbolischen, zeit-orientierbaren und energie-differenzierenden Geometrien. Physikalisch wichtig sind der Aufbau von frei fallenden und nicht rotierenden Laboratorien, das Auftreten modifizierter Energie-Impuls-Beziehungen und die Identifizierung eines Mechanismus, der erklärt, warum massive Teilchen, die sich schneller als einige masselosse Teilchen bewegen, Energie abstrahlen können, aber nur bis sie sich langsamer als alle masselossen Teilchen bewegen. Im dritten Teil der Dissertation ergründen wir die Quantisierung von Teilchen und Feldern auf tensoriellen Raumzeit-Geometrien, die die obigen physikalischen Bedingungen erfüllen. Eine wichtige Motivation dieser Untersuchung ist es, Techniken zur Berechnung der Zerfallsrate von Teilchen zu berechnen, die sich schneller als langsame masselose Teilchen bewegen. Wir finden, dass es wiederum die drei zuvor im klassischen Kontext identifizierten Voraussetzungen (der Hyperbolizität, Zeit-Orientierbarkeit und Energie-Differenzierbarkeit) sind, welche die Quantisierung allgemeiner linearer Elektrodynamik auf einer flächenmetrischen Raumzeit und die Quantizierung massiver Teilchen, die eine physikalische Energie-Impuls-Beziehung respektieren, erlauben. Wir erkunden auch systematisch, wie man Feldgleichungen aller Ableitungsordnungen generieren kann und beweisen einen Satz, der verallgemeinerte Dirac-Algebren bestimmt und die damit Reduzierung des Ableitungsgrades einer physikalischen Materiefeldgleichung ermöglicht. Der letzte Teil der vorliegenden Schrift skizziert ein bemerkenswertes Ergebnis, das mit den in dieser Dissertation dargestellten Techniken erzielt wurde. Insbesondere aufgrund der hier identifizierten dualen Abbildungen zwischen Teilchenimpulsen und -geschwindigkeiten auf allgemeinen tensoriellen Raumzeiten war es möglich zu zeigen, dass man die Gravitationsdynamik für hyperbolische, zeit-orientierbare und energie-differenzierende Geometrien nicht postulieren muss, sondern dass sich das Problem ihrer Konstruktion auf eine rein mathematische Aufgabe reduziert: die Lösung eines homogenen linearen Differentialgleichungssystems. Dieses weitreichende Ergebnis über modifizierte Gravitationstheorien ist eine direkte (aber schwer herzuleitende) Folgerung der Forschungsergebnisse dieser Dissertation. Die abstrakte Theorie dieser Doktorarbeit wird durch mehrere instruktive Beispiele illustriert.

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The purpose of this study is to investigate the footing fixity effect on the lateral deflection of a bridge pier for different types of soil. Generally, the rotational restraint coefficient at top and bottom of pier (degree of fixity of the pier) is used to compute the effective length factor of pier which is in turn used to determine the pier deflection. The magnitude of the deflection is used to determine whether the p-delta force effect should be considered while designing the pier. However, the pier deflection is usually computed by assuming that the pier footing is completely fixed to the ground. In case of soil under footing, rotational restraint coefficient is taken as five for all types of soils. In this study, finite element analysis method was used to determine the pier deflection by providing three actual soil environments and compare the results with the traditional approach. Hence, the rotational restraint coefficient will be modified according to the deflection computed from the finite element analysis.

Made available in DSpace on 2014-06-11T19:24:46Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-07-13Bitstream added on 2014-06-13T18:52:39Z : No. of bitstreams: 1 crema_lc_me_sjrp.pdf: 1000873 bytes, checksum: eab4aa81e312cda66cd21db4c84c24cd (MD5) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / O Brasil é o maior produtor mundial de açúcar de cana o qual apresenta grande importância para o crescimento do País. Uma das etapas mais importantes na produção de açúcar refinado é a etapa de clarificação da calda de açúcar, a partir da dissolução do açúcar cristal bruto (Demerara, VHP ou V-VHP), pois influencia as etapas subsequentes do processo para obtenção de produto de boa qualidade. No Brasil, geralmente nos processos convencionais de produção de açúcar, as usinas e refinarias utilizam a sulfitação para clarificar o caldo e xarope de cana, que emprega o dióxido de enxofre (SO2 ), a qual tem sido muito questionada por gerar problemas operacionais, tecnológicos, ambientais e restrições nas normas de segurança alimentar. Neste sentido, existe uma forte demanda por pesquisas que visem o desenvolvimento de tecnologias que busquem um melho r rendimento, qualidade do produto e aproveitamento dos recursos naturais existentes. Entre essas tecnologias, o processo de flotação com ar dissolvido (FAD) utilizando um polímero catiônico para a neutralização e coagulação de partículas coloidais e em suspensão, pode ser uma opção viável para o setor sucroalcooleiro. Esta pesquisa visou à obtenção e avaliação dos parâmetros físico-químicos (cinzas, cor, turbidez, filtrabilidade, floco alcoólico) e cinéticos por um flotador (saturador de ar) de bancada para remoção de partículas coloidais e em suspensão presentes na calda de açúcar (66 ºBrix), para produção de açúcar refinado. O processo FAD foi avaliado através da medida da concentração de ar dissolvido no meio líquido, variando a pressão (95 a 895 kPa), a temperatura (26, 50 e 70 ºC) e a agitação mecânica do flotador (0 a 300s). Diferentes dosagens... / Brazil is the world largest sugar cane producer which has a great importance for the Brazilian economy and in the increasing growth for the country. The clarification process is considered of major importance for the production of refined sugar from the dissolution of the raw crystal sugar (brown, VHP or V-VHP), since it affects the subsequent steps to obtain high quality products. In Brazil, usually in the conventional sugar refining processes, refineries apply sulfitation as the clarifying process for the sugarcane syrup or for the dissolved sugar, a process that uses sulfur dioxide (SO2 ), which has been questioned due to operational, technological and environmental issues, mainly related to food safety regulatory restrictions. In this way, there is a strong demand for research aiming to develop technologies that may improve the use of resources such as the flotation with air dissolved (FAD), with the help of clarifying agents such as cationic polymers for the neutralization and coagulation of colloidal and suspended particles, which can be a viable option for the sugarcane industry. The objective of this research was to obtain and evaluate the kinetics and physico-chemical parameters ash, color, turbidity , filtrability and alcoholic flake for a bench scale flotator for suspended and colloidal particle removal from a dissolved sugar solution (66 oBrix) for refined sugar production. The FAD process was evaluated through dissolved air concentration measurements, at varying pressures (95 to 895 kPa), temperatures (26, 50 and 70 o C) and flotator mechanical agitation times (0 to 300 s). Different dosages of a cationic polymer (10 to 1000 ppm) were evaluated for the reduction of the physico-chemical parameters in order to obtain the optimum dosage and for the kinetic... (Complete abstract click electronic access below)

Orientador: Roger Darros-Barbosa / Banca: Vânia Regina Nicoletti Telis / Banca: Cláudio Lima de Aguiar / Resumo: O Brasil é o maior produtor mundial de açúcar de cana o qual apresenta grande importância para o crescimento do País. Uma das etapas mais importantes na produção de açúcar refinado é a etapa de clarificação da calda de açúcar, a partir da dissolução do açúcar cristal bruto (Demerara, VHP ou V-VHP), pois influencia as etapas subsequentes do processo para obtenção de produto de boa qualidade. No Brasil, geralmente nos processos convencionais de produção de açúcar, as usinas e refinarias utilizam a sulfitação para clarificar o caldo e xarope de cana, que emprega o dióxido de enxofre (SO2 ), a qual tem sido muito questionada por gerar problemas operacionais, tecnológicos, ambientais e restrições nas normas de segurança alimentar. Neste sentido, existe uma forte demanda por pesquisas que visem o desenvolvimento de tecnologias que busquem um melho r rendimento, qualidade do produto e aproveitamento dos recursos naturais existentes. Entre essas tecnologias, o processo de flotação com ar dissolvido (FAD) utilizando um polímero catiônico para a neutralização e coagulação de partículas coloidais e em suspensão, pode ser uma opção viável para o setor sucroalcooleiro. Esta pesquisa visou à obtenção e avaliação dos parâmetros físico-químicos (cinzas, cor, turbidez, filtrabilidade, floco alcoólico) e cinéticos por um flotador (saturador de ar) de bancada para remoção de partículas coloidais e em suspensão presentes na calda de açúcar (66 ºBrix), para produção de açúcar refinado. O processo FAD foi avaliado através da medida da concentração de ar dissolvido no meio líquido, variando a pressão (95 a 895 kPa), a temperatura (26, 50 e 70 ºC) e a agitação mecânica do flotador (0 a 300s). Diferentes dosagens... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Brazil is the world largest sugar cane producer which has a great importance for the Brazilian economy and in the increasing growth for the country. The clarification process is considered of major importance for the production of refined sugar from the dissolution of the raw crystal sugar (brown, VHP or V-VHP), since it affects the subsequent steps to obtain high quality products. In Brazil, usually in the conventional sugar refining processes, refineries apply sulfitation as the clarifying process for the sugarcane syrup or for the dissolved sugar, a process that uses sulfur dioxide (SO2 ), which has been questioned due to operational, technological and environmental issues, mainly related to food safety regulatory restrictions. In this way, there is a strong demand for research aiming to develop technologies that may improve the use of resources such as the flotation with air dissolved (FAD), with the help of clarifying agents such as cationic polymers for the neutralization and coagulation of colloidal and suspended particles, which can be a viable option for the sugarcane industry. The objective of this research was to obtain and evaluate the kinetics and physico-chemical parameters ash, color, turbidity , filtrability and alcoholic flake for a bench scale flotator for suspended and colloidal particle removal from a dissolved sugar solution (66 oBrix) for refined sugar production. The FAD process was evaluated through dissolved air concentration measurements, at varying pressures (95 to 895 kPa), temperatures (26, 50 and 70 o C) and flotator mechanical agitation times (0 to 300 s). Different dosages of a cationic polymer (10 to 1000 ppm) were evaluated for the reduction of the physico-chemical parameters in order to obtain the optimum dosage and for the kinetic... (Complete abstract click electronic access below) / Mestre

Submitted by Caroline Falcao (caroline.rfalcao@ufpe.br) on 2017-06-08T18:51:11Z No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) 2012-dissertacao-RuteBarbosa.pdf.pdf: 7071839 bytes, checksum: 55f34652e0375ea49ad4d860f49fea1f (MD5) / Made available in DSpace on 2017-06-08T18:51:11Z (GMT). No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) 2012-dissertacao-RuteBarbosa.pdf.pdf: 7071839 bytes, checksum: 55f34652e0375ea49ad4d860f49fea1f (MD5) Previous issue date: 2012-05-28 / Durante o século XIX, a crise no sistema dos engenhos banguês colocou em cheque o prestígio político e econômico dos proprietários do açúcar no norte de Alagoas. Na tentativa de melhorar esta situação, os proprietários destes empreendimentos agrícolas criaram diversas estratégias para não perder o tão almejado status de senhor de engenho. Estas estratégias são perceptíveis através da cultura material, que durante o período oitocentista atuou como demarcador de posições sociais em decorrência dos novos padrões de comportamento voltados a um modo de vida mais civilizado, cosmopolita e burguês. Neste contexto, as louças assumiram um papel importante, agindo como poderosos instrumentos de ação social, comunicando simbolicamente identidades, hierarquia e poder. Este estudo busca compreender os significados atribuídos as louças pelos produtores de açúcar no norte de Alagoas. Para isso, foram analisados fragmentos de louças oriundas de cinco engenhos e um entreposto comercial, sendo três desses engenhos banguês e dois movidos a vapor. / During the 19th century a crisis in the sugar economy, felt particularly by the mills run by animal or water power, put in check plantation owners’ economic and political prestige in the north of Alagoas State. In an attempt to ameliorate this situation, the owners created diverse strategies to secure their coveted role as plantation masters and all this signified within society at that time. Their strategies are discernible in the material culture, which, during this 19th century functioned as markers of social position in the face of new behavior patterns geared to a more civilized, cosmopolitan and bourgeois life. In this context, refined earthenwares assumed an important role, serving as powerful instruments for social action, symbolically communicating social identity, hierarchy and power. The present study seeks to understand the meaning attributed to refined eathenwares by owners and their families in northern Alagoas State. To this end, five sugar plantations and a commercial port provided the ceramic assemblage analyzed in order to detect consumption patterns in the archaeological record of these sites. Of the sugar mills compared, two were steam powered and three were run by either water or animal traction.

Honey is a naturally sweet substance produced by honeybees from water, pollen, and nectar. Due to its unique nutritional and therapeutic benefits, which are ascribed to the interaction of the various chemical groups it contains, natural honey is one of the most popular consumed products. Modern-day individuals consume a lot of refined granulated sugar, either directly through foods or indirectly from other sources. The consumption of large amounts of refined granulated sugar alters hematological and physiological changes in the body. According to several scientific studies, honey can be a healthier alternative to refined granulated sugar because it does not threaten human health. Consuming natural honey raises serum iron levels and red blood cell counts since it is known that the iron in honey serves as a precursor to hemoglobin. Overconsumption of refined granulated sugar has been identified as a risk factor for metabolic disorders such as obesity, cardiovascular disease, type 2 diabetes, and non-alcoholic fatty liver disease. This study, therefore, investigated the effect of the golden liquid from honeybees (natural honey) and refined granulated sugar on the blood glucose and serum iron levels of 25 Wistar albino rats. The experimental animals used in this study were grouped into five treatments based on the dose of natural honey and refined granulated sugar administered namely: T1 (1.02 g of honey /kg BW), T2 (1.40g of honey /kg BW), T3 (1.02 g of refined granulated sugar /kg BW), T4 (1.40g of refined granulated sugar /kg BW), rats in T5 were not administered honey, and refined granulated sugar served as the control. The blood glucose concentration of the albino rats was measured using the glucose strips with a glucometer while the serum iron analysis was conducted using Atomic Absorption Spectrophotometer. The result revealed that the mean blood glucose level of the rats was highest in T3 (112.95mg/dl), followed by T5 (92.20mg/dl) while the least value was recorded in T2 (74.86mg/dl). There was a significant difference in the blood glucose levels of albino rats orally administered natural honey and refined granulated sugar at varying levels (P0.05) among treatments. It was found that the highest serum iron level was recorded in T5 (1.31±0.395 ppm) followed by T2 (1.22± 0.115 ppm), while the least serum iron level was recorded in T1 (0.88±1.319ppm). It was observed that there were no significant differences in the serum iron levels of the albino rats (p>0.05) among treatments The use of natural honey is recommended since albino rats orally administered honey at varying doses had lower blood glucose levels than those given refined granulated sugar. This work will be a useful tool for understanding the role of honey over granulated sugars, especially among prediabetic and diabetic patients in order to control their sugar levels using diet as a source. This implies that the consumption of natural honey did not significantly increase blood glucose levels. It was therefore recommended that physicians and dietitians should advocate for natural honey use over refined granulated sugar which could be safe for consumption by diabetic patients.