Web-based system for the traceability of cultivated Nile Tilapia based on ISO 12877: 2011

Objective: Present the systematization of the nilotic tilapia cultivation process, using a computer system for traceability of production and marketing based on the ISO 12877: 2011 standard. Design/methodology/approach: A documentary and field investigation was carried out to learn about the Nile tilapia production process currently applied; Traceability monitoring was evaluated based on the case study of the Double T and María del Carmen aquaculture farms located in the municipalities of Manzanillo and Armería belonging to the state of Colima; The process was contrasted with the ISO standard and the system was developed and implemented. Results: There is a system that systematizes the registration of backward, internal and forward traceability activities in the cultivation and marketing of tilapia. The system favors food safety by registering care by lot based on the aforementioned ISO standard, thus evidencing the traceability in the cultivation and commercialization of the species. Limitations on study/implications: The results presented concern the development and implementation of the system, still requiring an evaluation of its impact on the production and commercialization of cultivated tilapia, as well as the efficiency of traceability. Findings/conclusions: The system was made, taking into account the necessary indicators for an ISO certification. In this way, apart from facilitating the registration and consultation of information, the producer company has the advantage of obtaining a certification for the aquaculture production process, generating added value to its products.Objective: To describe the systematization of the Nile tilapia cultivation process using a computer system for production and marketing traceability based on ISO 12877:2011 standard and web technologies. Design/methodology/approach: A documentary and field investigation were conducted to learn about the Nile tilapia production process currently applied; traceability was evaluated based on Double T and María del Carmen study cases, aquaculture farms located in the municipalities of Manzanillo and Armería located in the state of Colima, México; the process was contrasted with the ISO standard and the system was developed and implemented. Results: A Traceability System that records backward, internal, and forward procedural activities in the cultivation and marketing of tilapia. The system improves food safety control by registering lot care based on the ISO standard, resulting in well-defined traceable processes in the production and commercialization of the Nilotic tilapia. Limitations on study/implications: The results shown are related to the development and implementation of the system; however future work is yet to be carried out to assess its effect on the production and commercialization of farmed tilapia, as well as the efficiency of traceability. Findings/conclusions: The system was developed taking into consideration the necessary indicators for an ISO certification. Hence, aside from simplifying the registration and consultation of information, the producing company has the benefit of earning a certification for the aquaculture production process, creating additional value to its products

Antibacterial activity of the Calendula officinalis L. essential oil on Escherichia coli

In developing countries, the risk of getting sick from eating food contaminated with Escherichia coli is very high. As a consequence of the multidrug resistance of this bacterium, a therapeutic alternative has been sought in the plant kingdom. The Objective of this research was to evaluate the antibacterial effect of pot marigold (Calendula officinalis) essential oil (EO) on the growth of E. coli. Design/Methodology/Approach: The antibacterial activity was determined using a Kirby-Bauer disk diffusion susceptibility test. A 90 to 60% dilution of EO generated 24 to 22 mm halos. The EA was subjected to a GC/MS analysis. The results showed that cadinene (53.8%) was the main constituent, followed by germacrene (22.5%). The minimum inhibitory concentration was 7 μg mL-1. Findings/Conclusions: C. officinalis EO can be considered as an option in the treatment against this enterobacteria

O papel da nutrição na saúde mental e nos transtornos psiquiátricos: uma perspectiva translacional

Mental as well as neurological disorders are among the leading causes of disability worldwide. In recent years, multiple epidemiological studies have investigated the relationship between dietary patterns and mental status, emphasizing the influence of genetic and environmental factors on the development of such disorders.Las enfermedades mentales y los trastornos neurológicos se encuentran entre las principales causas de discapacidad a nivel mundial. En los últimos años, múltiples estudios epidemiológicos han investigado la relación existente entre los patrones dietéticos y el estado mental, con énfasis en la influencia de factores genéticos y ambientales en el desarrollo de dichos trastornos.Doenças mentais e distúrbios neurológicos estão entre as principais causas de incapacidade em todo o mundo. Nos últimos anos, vários estudos epidemiológicos têm investigado a relação entre padrões alimentares e estado mental, enfatizando a influência de fatores genéticos e ambientais no desenvolvimento desses transtornos.&nbsp

Escucha México: estrategias gráficas y cultura auditiva

El PAP Escucha México está en constante búsqueda de implementar entornos incluyentes, el desarrollo de la educación sobre la salud y cultura auditiva, proveer las herramientas necesarias para un confort acústico e informar a la ciudadanía y a nuestra comunidad universitaria, acerca de la discapacidad auditiva. Con una gran empatía, se busca que la sociedad esté más informada y de este modo, desarrollar una conciencia acerca de las repercusiones que el ruido puede ocasionar, rasgos negativos irreversibles afectando nuestra salud física y emocional. También nos adentramos a conocer términos científicos y logramos adecuar dicha información para transmitirla de manera clara a las demás personas. Para lograr estas metas, el PAP cuenta con 5 proyectos internos con objetivos específicos buscando siempre un entorno incluyente en los que existen diferentes metodologías de trabajo desde cualitativas hasta cuantitativas, e incluso técnicas de investigación y recopilación de datos. Estos proyectos son: Cruzada contra el Ruido, Mariana Anaya Doll, Redes Sociales Escucha México, Cultura Auditiva (Estrategias de Enseñanza/Aprendizaje) y el Segundo Encuentro de Cultura Auditiva. Cada proyecto tiene un propósito en específico, así como diferentes áreas de trabajo que proveen manejo de redes sociales, investigación e incluso apoya a terceros como Mariana Anaya. Parte fundamental como individuos es reconocer nuestro papel dentro de nuestro entorno y por consecuencia, responder de manera correcta a la corresponsabilidad que cada uno de nosotros tenemos en injerencia a actuar de manera responsable en nuestra sociedad. Por ende, estamos comprometidos y abiertos a la apertura de diálogos, información y de nuevas tendencias, para así lograr un mayor alcance con fines educativos y de comunicación con base a la inclusión y el respeto social.ITESO, A.C

Systolic blood pressure and the risk of kidney replacement therapy and mortality in patients with chronic kidney disease stage 4-5

Introduction In patients with chronic kidney disease stage 4 and 5 (CKD stages 4-5) without dialysis and arterial hypertension, it is unknown if the values of systolic blood pressure (SBP) considered in control <120 mmHg are associated with kidney replacement therapy (KRT) and mortality. Methods In this retrospective cohort study, hypertensive CKD stages 4-5 patients attending the Renal Health Clinic at the Hospital Civil de Guadalajara were enrolled. We divided them into those that achieved SBP 120 mmHg), the uncontrolled group. Our primary objective was to analyze the association between the controlled group and KRT; the secondary objective was the mortality risk, and if there were subgroups of patients that achieved more benefit. Data were analyzed using Stata software, version. 15.1. Results During 2017 to 2022 a total 275 hypertensive CKD stages 4-5 patients met the inclusion criteria for the analysis, 62 in the controlled group and 213 in the uncontrolled group; mean age 61 years, 49.82% were male, SBP was significantly lower in the controlled group (111 mmHg) compared to the uncontrolled group (140 mmHg), eGFR was similar between groups (20.41 ml/min/1.73m2). There was a tendency to increase the mortality risk in the uncontrolled group (HR 6.47 [0.78-53.27]; p= 0.082) and an association by the Kaplan-Meir analysis (Log-rank p= 0.043). The subgroup analysis for risk of KRT in the controlled group revealed that patients ≥ 61 years had a lower risk of KRT (HR 0.87 [95% CI, 0-76-0.99]; p=0.03, p of interaction = 0.005), but no differences were found in the subgroup analysis for mortality. In a follow-up of 1.34 years, no association was found in the risk of KRT according to the controlled or uncontrolled groups in a multivariate Cox analysis. Conclusion In a retrospective cohort of patients with CKD stages 4-5 and hypertension, SBP >120 mmHg was not associated with risk of KRT but could be associated with the risk of death. Clinical trials are required in this group of patients to demonstrate the impact of reaching the SBP goals recommended by the KDIGO guidelines

Alongshore variability of the California Current System from Central to Baja California in winter and spring 2003, physical, chemical and biological properties

Poster.-- American Society of Limnology and Oceanography and the Oceanography Society, Honolulu, Hawaii (USA), 15-20 febrero 2004Sixteen stations along the continental slope of western North America were occupied in February 18-27 and May 22-31, 2003, and form a meridional section from Monterey Bay, California (37º N, 122º W) to Cabo San Lucas, Mexico (23º N, 110º W). Our purpose was to compare trends in California Current (CC), Inshore Countercurrent (ICC) and California Undercurrent (CUC) properties with latitude, and between winter and spring conditions. In winter, coastal upwelling was near zero and the along-transect dynamic height was high and flat, allowing the ICC to advect tropical properties northward. In spring, coastal upwelling had commenced and surface flow along the transect presumably became equatorward. As a consequence of these dynamics, in winter the thermocline was deeper, SST was higher, macronutrients, chlorophyll and primary production were low along the entire transect, with most properties lacking strong latitudinal trends. In spring, the thermocline, macronutrients, chlorophyll and primary production rose along the entire section but most dramatically in the north where upwelling was stronger. Prochlorophytes and other small open-ocean phytoplankton were more abundant in winter along the entire transect and to the south in spring, whereas diatoms, a characteristic coastal group of phytoplankton, were more abundant in spring and in the north. Surface iron was higher in the north in winter, but lower there in spring, presumably reflecting drawdown by diatoms. These results are detailed in the figure captionsWe would like to express our gratitude to the David and Lucile Packard Foundation for funding this workN

Opuntia in México: Identifying Priority Areas for Conserving Biodiversity in a Multi-Use Landscape

BACKGROUND: México is one of the world's centers of species diversity (richness) for Opuntia cacti. Yet, in spite of their economic and ecological importance, Opuntia species remain poorly studied and protected in México. Many of the species are sparsely but widely distributed across the landscape and are subject to a variety of human uses, so devising implementable conservation plans for them presents formidable difficulties. Multi-criteria analysis can be used to design a spatially coherent conservation area network while permitting sustainable human usage. METHODS AND FINDINGS: Species distribution models were created for 60 Opuntia species using MaxEnt. Targets of representation within conservation area networks were assigned at 100% for the geographically rarest species and 10% for the most common ones. Three different conservation plans were developed to represent the species within these networks using total area, shape, and connectivity as relevant criteria. Multi-criteria analysis and a metaheuristic adaptive tabu search algorithm were used to search for optimal solutions. The plans were built on the existing protected areas of México and prioritized additional areas for management for the persistence of Opuntia species. All plans required around one-third of México's total area to be prioritized for attention for Opuntia conservation, underscoring the implausibility of Opuntia conservation through traditional land reservation. Tabu search turned out to be both computationally tractable and easily implementable for search problems of this kind. CONCLUSIONS: Opuntia conservation in México require the management of large areas of land for multiple uses. The multi-criteria analyses identified priority areas and organized them in large contiguous blocks that can be effectively managed. A high level of connectivity was established among the prioritized areas resulting in the enhancement of possible modes of plant dispersal as well as only a small number of blocks that would be recommended for conservation management

Directing Cluster Formation of Au Nanoparticles from Colloidal Solution

Discrete clusters of closely spaced Au nanoparticles can be utilized in devices from photovoltaics to molecular sensors because of the formation of strong local electromagnetic field enhancements when illuminated near their plasmon resonance. In this study, scalable, chemical self-organization methods are shown to produce Au nanoparticle clusters with uniform nanometer interparticle spacing. The performance of two different methods, namely electrophoresis and diffusion, for driving the attachment of Au nanoparticles using a chemical cross-linker on chemically patterned domains of polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) thin films are evaluated. Significantly, electrophoresis is found to produce similar surface coverage as diffusion in 1/6th of the processing time with an ~2-fold increase in the number of Au nanoparticles forming clusters. Furthermore, average interparticle spacing within Au nanoparticle clusters was found to decrease from 2-7 nm for diffusion deposition to approximately 1-2 nm for electrophoresis deposition, and the latter method exhibited better uniformity with most clusters appearing to have about 1 nm spacing between nanoparticles. The advantage of such fabrication capability is supported by calculations of local electric field enhancements using electromagnetic full-wave simulations from which we can estimate surface-enhanced Raman scattering (SERS) enhancements. In particular, full-wave results show that the maximum SERS enhancement, as estimated here as the fourth power of the local electric field, increases by a factor of 100 when the gap goes from 2 to 1 nm, reaching values as large as 10(10), strengthening the usage of electrophoresis versus diffusion for the development of molecular sensors