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In this research, we employ the potent technique of Lie group analysis to derive analytical solutions for the (3+1)-extended Kadomtsev-Petviashvili (3D-EKP) equation. The systematic application of this method enables the identification of Lie point symmetries associated with the equation, leading to the derivation of an optimal system of one-dimensional subalgebras relevant to the equation. This optimal system is utilized to obtain several invariant solutions. The Lie group method is subsequently applied to the reduced governing equations derived from the given equation. We complement our findings with Mathematica simulations illustrating some of the obtained solutions. Furthermore, a direct approach is used to investigate local conservation laws. Importantly, our study addresses a gap in the exploration of the 3D-EXP equation using group theoretic methods, making our findings novel in this context. [ABSTRACT FROM AUTHOR]

Objective: To characterize the physicochemical and nutritional compounds of meal made from shrimp (Farfantepenaeus aztecus L.) exoskeleton, obtained through hot air dehydration processes, in order to value new products and applications, according to their nutritional components. Design/Methodology/Approach: Shrimp producers from Alvarado, Veracruz, were interviewed using a quantitative approach with a descriptive scope. Likewise, shrimp (Farfantepenaeus aztecus L.) shells were dehydrated and powdered to transform them into meal. The proximate chemical composition was analyzed to determine its nutritional composition and its macro and micronutrients, as well as to identify the deficiencies or excesses of certain nutrients. The general public and local ranchers were surveyed and interviewed to establish the opinions, preferences, and behaviors of consumers regarding meal by-products, in order to evaluate their market acceptance. Results: In Alvarado, Veracruz, 2.5 tons of shrimp shell are wasted. The meal obtained from these shells has a high protein (45.40%) and mineral content, which includes Ca (11.17%), Na (6.86%), Fe (237 mg/Kg-1), and Zn (77 mg/Kg-1). Therefore, this nutrient content guarantees the quality of the protein input that is acquired and the food that is provided. Study Limitations/Implications: Access to outdated statistical information, resulting from the COVID-19 pandemic, hindered the collection of relevant data. Likewise, the lack of interest of the producers in monitoring the project and the limited participation and knowledge of the workers represented a significant challenge to the progress of the study. Findings/Conclusions: The meal under study contained nutritional elements, making it a product with high nutritional quality that could add value to shrimp waste and that has potential applications in the food industry, in the production of fertilizers, and in the formulation of balanced feed for animals. Consequently, it would contribute to the reduction of pollution in the Alvarado lagoon system. [ABSTRACT FROM AUTHOR]

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This study aimed to describe the characteristics of multisystemic inflammatory syndrome associated with COVID-19 (MIS-C) in the first three years of the pandemic in children in a pediatric hospital in Peru. We conducted an observational, descriptive study with data from 73 patients and described the clinical and laboratory characteristics, treatment and complications according to the wave of the pandemic and whether they had shock. The median age was 6 years, gastrointestinal and mucocutaneous manifestations were frequent in the three waves. Kawasaki disease-like phenotype was present in 34 (46.6%) patients and 21 (28.8%) patients developed shock. The most commonly used treatment was immunoglobulin (95.9%), followed by acetylsalicylic acid (94.5%) and corticosteroid (86.3%). Five (7%) patients had coronary aneurysm and 17 (23.3%) were admitted to the intensive care unit (ICU). Patients with shock had greater laboratorial alteration and need for mechanical ventilation. In conclusion, MIS-C has decreased in the first three years of the pandemic, possibly due to COVID-19 vaccination in children. [ABSTRACT FROM AUTHOR]