https://ri.ufs.br/jspui/handle/riufs/2141 Wed, 28 Oct 2026 15:27:43 GMT 2026-10-28T15:27:43Z https://ri.ufs.br/jspui/handle/riufs/26215 Title: Introdução às equações de diferenças e aplicações Authors: Santos Júnior, José Adenualdo dos Abstract: This work presents a comprehensive introduction to difference equations and stability theory, exploring everything from mathematical foundations to applications in contemporary scenarios. The research begins with the exposition of finite difference calculus, defining difference (∆) and shift (E) operators and the importance of discretizing continuous models for computational purposes. The study delves into the resolution of first-order and higher-order linear equations, using tools such as the Casoratian and the Schur-Cohn criterion to determine the stability of solutions. In the applied phase, the work demonstrates the utility of these equations in numerical methods (Newton-Raphson and Euler) and in socio-economic analyses relevant to the Brazilian reality, such as the mathematical proof of the inevitability of player ruin in betting platforms (“Fortune Tiger”) and the modeling of National Income (GDP) through Samuelson’s model. The results reinforce the capacity of difference equations to predict complex behaviors and diagnose trajectories of discrete dynamic systems.; Este trabajo presenta una introducción integral a las ecuaciones de diferencias y a la teoría de estabilidad, explorando desde los fundamentos matemáticos hasta sus aplicaciones en escenarios contemporáneos. La investigación comienza con la exposición del cálculo de diferencias finitas, definiendo los operadores de diferencia (∆) y de desplazamiento (E), así como la importancia de discretizar modelos continuos con fines computacionales. El estudio profundiza en la resolución de ecuaciones lineales de primer orden y de orden superior, utilizando herramientas como el Casoraciano y el criterio de Schur-Cohn para determinar la estabilidad de las soluciones. En la fase aplicada, el trabajo demuestra la utilidad de estas ecuaciones en métodos numéricos (Newton-Raphson y Euler) y en análisis socioeconómicos relevantes para la realidad brasileña, tales como la demostración matemática de la inevitabilidad de la ruina del jugador en plataformas de apuestas (“Fortune Tiger”) y la modelación del Ingreso Nacional (PIB) a través del modelo de Samuelson. Los resultados refuerzan la capacidad de las ecuaciones de diferencias para predecir comportamientos complejos y diagnosticar trayectorias de sistemas dinámicos discretos. Fri, 31 Jul 2026 00:00:00 GMT https://ri.ufs.br/jspui/handle/riufs/26215 2026-07-31T00:00:00Z https://ri.ufs.br/jspui/handle/riufs/26212 Title: Influência das diferentes faixas de peso corporal na taxa de concepção de novilhas submetidas à indução de puberdade Authors: Barreto, Carlos Henrique Mendonça Mon, 23 Feb 2026 00:00:00 GMT https://ri.ufs.br/jspui/handle/riufs/26212 2026-02-23T00:00:00Z https://ri.ufs.br/jspui/handle/riufs/26211 Title: Verificação Oficial de Elementos de Controle (VOEC) como ferramenta de inspeção higiênico-sanitário em indústria de ovos comercial registrado no Serviço de Inspeção Estadual (SIE): relato de caso Authors: Oliveira, Iris Gisele Santos de Mon, 23 Feb 2026 00:00:00 GMT https://ri.ufs.br/jspui/handle/riufs/26211 2026-02-23T00:00:00Z https://ri.ufs.br/jspui/handle/riufs/26201 Title: Interações medicamentosas e incompatibilidades na terapia nutricional parenteral : uma revisão de escopo Authors: Paes, Lizandra Santos; Oliveira, Yhago Nascimento de Abstract: Introduction: Parenteral nutrition (PN) therapy is indicated for patients who may have gastrointestinal tract dysfunction or obstruction, and are unable to meet their nutritional needs via enteral or oral routes. PN therapy is a high-risk feeding modality that may be subject to physicochemical incompatibilities and interactions between medications and nutrients within the parenteral solution bag. Given the complexity of the formulation and the risks associated with incompatibilities and drug interactions, it is relevant to gather and analyze the available evidence on these events in order to contribute to the safety and effectiveness of parenteral nutrition therapy. Objectives: To map the evidence available in the literature regarding drug interactions and incompatibilities related to PN therapy, highlighting the key factors involved, their clinical consequences, and prevention strategies. Methodology: A descriptive and exploratory scoping review was conducted following the Joanna Briggs Institute (JBI) recommendations. The literature search was performed in the PubMed (MEDLINE) database, complemented by strategies adapted for other databases, covering studies published between 2013 and 2026. Results: Evidence showed that a significant portion of PN incompatibilities stems primarily from interactions between electrolytes, such as calcium and phosphate, and the instability of lipid emulsions in "3-in-1" mixtures. Furthermore, studies on medications demonstrated that incompatibility can vary depending on the drug, the PN composition, the "2-in-1" or "3-in-1" system, and the administration method (e.g., addition to the bag vs. Y-site administration). Conclusion: The analyzed studies demonstrate that physicochemical incompatibilities and drug-nutrient interactions pose significant risks to the safety of PN therapy. Preventing these events depends on controlling factors related to the formulation's composition and preparation, as well as pre-assessing the compatibility of concomitantly administered medications. In this context, the pharmacist's role in preventing physicochemical incompatibilities and drug interactions in PN is highlighted. Mon, 24 Aug 2026 00:00:00 GMT https://ri.ufs.br/jspui/handle/riufs/26201 2026-08-24T00:00:00Z