Comparison of sequencing-based and array-based genotyping platforms for genomic prediction of maize hybrid performance

XUECAI ZHANG Zefeng Yang Yang Xu (2022, [Artículo])

Genotyping by Sequencing Genomic Selection SNP Array Marker Density CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA MARKER-ASSISTED SELECTION MAIZE SINGLE NUCLEOTIDE POLYMORPHISM HYBRIDS

Erratum: Author Correction: Genetic structure analysis and identifying key founder inbred lines in diverse elite sub-tropical maize inbred lines (Scientific reports (2023) 13 1 (11695))

Melaku Gedil Ana Luisa Garcia-Oliveira Nnanna Unachukwu Cesar Petroli Sarah Hearne Abebe Menkir (2023, [Artículo])

Genetic Relationships Desirable Traits CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA GENETIC STRUCTURES INBRED LINES MAIZE BREEDING PROGRAMMES

Universal fixation system for pad printing of plastic parts

JOSE ALEJANDRO FERNANDEZ RAMIREZ (2023, [Artículo])

Pad printing is used in automotive, medical, electrical and other industries, employing diverse materials to transfer a 2D image onto a 3D object with different sizes and geometries. This work presents a universal fixation system for pad printing of plastic parts (UFSP4) in response to the needs of small companies that cannot afford to invest in the latest technological advances. The UFSP4 comprises two main subsystems: a mechanical support system (i.e., support structure, jig matrix and braking system) and a control system (i.e., an electronic system and an electric-hydraulic system). A relevant feature is the combination of a jig matrix and jig pins to fixate complex workpieces with different sizes. Using finite element analysis (FEA), in the mesh convergence, the total displacement converges to 0.00028781 m after 12,000 elements. The maximum equivalent stress value is 1.22 MPa for the polycarbonate plate in compliance with the safety factor. In a functionality test of the prototype performed in a production environment for one hour, the jigs fixed by the plate did not loosen, maintaining the satisfactory operation of the device. This is consistent with the displacement distribution of the creep analysis and shows the absence of the creep phenomenon. Based on FEA that underpinned the structural health computation of the braking system, the prototype was designed and built, seeking to ensure a reliable and safe device to fixate plastic parts, showing portability, low-cost maintenance and adaptability to the requirements of pad printing of automotive plastic parts.

Use of AI tools declaration: The authors declare they have not used Artificial Intelligence (AI) tools in the creation of this article.

Acknowledgments: To the company Plásticos Decorados and Centro de Tecnología Avanzada (CIATEQ A.C.) for the facilities and support to carry out this work. To the Consejo Nacional de Humanidades, Ciencias y Tecnologías (CONAHCYT) for a Ph.D. scholarship support number 500839 and CONAHCYT SNI.

Conflict of interest: The authors declare there are no conflicts of interest.

Modular fixtures Jig matrix Prototype design Pad printing Fixture methods INGENIERÍA Y TECNOLOGÍA CIENCIAS TECNOLÓGICAS OTRAS ESPECIALIDADES TECNOLÓGICAS OTRAS OTRAS

Transparencia y rendición de cuentas en la deuda pública municipal. Modelo de coherencia entre políticas y coordinación institucional para el estudio de casos: Hermosillo, Cajeme y Nogales, 2006-2016

LUIS ERNESTO FLORES FONTES (2019, [Tesis de doctorado])

CIENCIAS SOCIALES Deuda pública Finanzas municipales Finanzas públicas Hermosillo Cajeme Nogales Transparencia en el gobierno

Wheat seed demand assessment assisted by genotyping in Ethiopia

Moti Jaleta Kindie Tesfaye Olaf Erenstein (2023, [Artículo])

This study examines the extent to which wheat varieties supplied by the formal seed system align with the varieties demanded and used by farmers in Ethiopia. The framework of stated and revealed preferences drawn from the consumer preference theory is used to analyze farmer demand for different wheat varieties. We used official data from the formal seed sector and representative survey data from wheat farm households in Ethiopia. The survey data allow to contrast the farmer reported varietal use with genotyping by sequencing (also known as DNA fingerprinting). Farmers' reliance on informal seed sources and own saved seed, among others, contributes to the misidentification of the varieties they grow. Consequently, farmers are likely to misinform the formal seed demand assessment leading to either an over- or underestimation of actual seed demand for specific wheat varieties. Genotyping by sequencing, as opposed to farmer reports, established the persistence of old varieties. This also implies vulnerability of wheat production to disease dynamics depending on the longevity of disease resistance by the variety in use. Apart from narrowing the gap between the actual and stated demand and ensuring timely replacement of wheat varieties, genotyping-assisted estimates can save seed carry-over cost. Genotyping by sequencing is increasingly used as the new benchmark and gold standard for identifying and tracking the adoption of crop varieties. The technique has potential to enhance the performance of the seed sector through effective planning that can optimize resource commitments and accelerate the rate of varietal replacement.

Seed Demand Varietal Replacement CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA GENOTYPING-BY-SEQUENCING SEEDS WHEAT

Local markets and food security. The case of the Milpera and Puuc regions in Yucatan

Ana Laura Bojórquez Carrillo Monserrat Vargas Jiménez Mireya Noemi Hernández Islas (2023, [Artículo, Artículo])

Food insecurity is a complex problem worldwide. A major part of this problem is the food supply. Local markets can represent a strategy for building social capital, as well as strategies for subsistence and sustainability of food value chains, contributing to food security and its effects. The objective of this research is to determine if the existence of a municipal market in the Milpera and Puuc regions of Yucatán favors the existence of food security, the consumption or the expense of natural foods. The population is located in 18 municipalities of Yucatán, Mexico. To carry out this study, a cross-sectional, non-experimental study, with a quantitative approach and correlational scope. The main techniques that were applied were descriptive statistics and contingency tables with respect to 6 hypotheses. This work shows that the existence of markets in the communities makes a significant difference because it positively impacts the food security of the inhabitants, since it allows them to have access to a wider variety of products and at the same time, favors the active dynamics of the economy of the community.

Local markets Food safety Local development Food sovereignty Rural areas Mercados locales Seguridad alimentaria Desarrollo local Soberanía alimentaria Zonas rurales CIENCIAS SOCIALES CIENCIAS SOCIALES

Inversión extranjera directa en los estados de Aguascalientes, Guanajuato y Querétaro 2000-2013

José Humberto Juárez Hernández (2016, [Tesis de maestría])

Instituto de Investigaciones Económicas y Empresariales. Maestría en Ciencias en Negocios Internacionales

In recent years the foreign direct investment flow (FDI) have increased more than world production, making it a necessary instrument for economic growth in developing countries. Mexico, since 1980, have established mechanisms through public policies for attracting FDI, however there are other variables that determine the arrival of foreign investment to the country. For this reason, the objective of this research is to know whether the government incentives, infrastructure, technology, human capital and insecurity encourage the arrival of foreign direct investment to the country, taking as sample the states of Aguascalientes, Guanajuato and Queretaro. The selection of the states was based on the rapid growth of FDI inflows they perceived from 2000 to 2013. The research used panel data econometric models to see if there is a relationship between variables, various tests were applied to select the appropriate estimation methods. The main conclusion of this research was to discover that two variables, government incentives and insecurity, were those that were having an impact on attracting FDI to these states. In addition econometrically they discarded the remaining variables, human capital, technology and infrastructure, since they have no significance in this model.

En los últimos años los flujos de inversión extranjera directa (IED) han aumentado más que la producción mundial, convirtiéndola en un instrumento necesario para el crecimiento económico de los países en desarrollo. En México a partir de 1980 se han establecido mecanismos, por medio de políticas públicas, para la atracción de IED, sin embargo existen otras variables que determinan la llegada de inversión extranjera al país. Por esta razón, el objetivo de esta investigación es conocer si los incentivos gubernamentales, la infraestructura, la tecnología, el capital humano y la inseguridad fomentan la llegada de inversión extranjera directa al país, tomando como muestra los estados de Aguascalientes, Guanajuato y Querétaro. La selección de los estados se basó en el acelerado crecimiento de recepción de IED que percibieron del año 2000 al 2013. La investigación utilizó modelos econométricos de datos panel para comprobar si existe una relación entre las variables, se aplican diversas pruebas para seleccionar los métodos de estimación adecuados. Las principales conclusiones de esta investigación fue descubrir que dos variables , incentivos gubernamentales e inseguridad, eran las que estaban teniendo un impacto en la atracción de IED a dichos estados. Además se descartan econométricamente las variables restantes, capital humano, tecnología e infraestructura, ya que no tienen una significancia en este modelo.

CIENCIAS SOCIALES ININEE-M-2016-1325 Capital humano Desarrollo tecnológico Incentivos gubernamentales Infraestructura

Phenotypic assessment of genetic gain from selection for improved drought tolerance in semi-tropical maize populations

Terence Molnar Somak Dutta Thanda Dhliwayo Samuel Trachsel Michael Lee (2023, [Artículo])

Drought Tolerant Population Topcross Water Deficit CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA DROUGHT TOLERANCE WATER MAIZE CLIMATE CHANGE GENETIC GAIN

Selección del tren de tratamiento para deshidratar y reducir el volumen del lodo de plantas potabilizadoras

MARTÍN PIÑA SOBERANIS LUCIANO SANDOVAL YOVAL MARTIN PIÑA SOBERANIS (2001, [Artículo])

El objetivo del estudio fue evaluar la influencia del tipo de tratamiento y del polímero empleado en la deshidratación del lodo, así como en la reducción de su volumen. Para tal efecto, se utilizaron los parámetros de resistencia específica a la filtración, tiempo de filtración y porcentaje de humedad.

Potabilización Tratamiento del lodo Deshidratación de lodos Plantas de tratamiento INGENIERÍA Y TECNOLOGÍA

Implementación de algoritmos basados en la teoría de grafos en proyectos de sectorización de redes de agua potable

Velitchko Tzatchkov VICTOR HUGO ALCOCER YAMANAKA (2011, [Artículo])

Los proyectos de sectorización de redes de agua potable, en proceso en diferentes ciudades mexicanas actualmente, consisten en dividir la red de la ciudad en varias subredes o sectores más pequeños con una o máximo dos entradas de agua por sector. Para diseñar los sectores se emplean modelos de redes de agua potable que revisan si la sectorización propuesta puede funcionar hidráulicamente de manera adecuada. Para los proyectos de sectorización en redes grandes se requieren, sin embargo, facilidades algorítmicas adicionales, como análisis de conectividad, zona de influencia y contribución de cada fuente sobre el consumo. En el presente artículo se discuten eficientes algoritmos de este tipo basados en la teoría de los grafos, implementados en un sistema de cómputo.

Modelos de redes de distribución Redes de distribución de agua Algoritmos sobre grafos INGENIERÍA Y TECNOLOGÍA