Application of multiple proxies in Mexican tropical coasts to prove evidence of tsunami deposits

"The study of tsunami deposits has significantly advanced since the Chilean 2010 and Tohoku 2011 tsunamis providing opportunities to analyze tsunami deposits and their characteristics (Rubin et al., 2017)." (fragm.

Genetic diversity of sweet sorghum germplasm in Mexico using AFLP and SSR markers

O objetivo deste trabalho foi avaliar a diversidade e as relações genéticas entre linhagens e variedades de sorgo sacarino (Sorghum bicolor) do banco de germoplasma do Instituto Nacional de Investigações Florestais, Agrícolas e Pecuárias, México, por meio de marcadores AFLP e SSR. Os marcadores moleculares revelaram robustez dos perfis de amplificação e permitiram diferenciar os 41 genótipos de sorgo sacarino avaliados. A análise da frequência e da distribuição dos fragmentos polimórficos permitiu detectar alelos únicos (AFLP) e raros (SSR) em diversos genótipos (RBSS‑8, RBSS‑9, RBSS‑25, RBSS‑32 e RBSS‑37), o que indica que estes marcadores podem estar associados a uma característica que ainda não foi determinada ou podem ser úteis para a identificação destes genótipos. As relações genéticas indicaram a presença de pelo menos dois tipos de sorgo sacarino: um grupo de genótipos modernos usados para a produção de açúcar e biocombustíveis, e outro grupo formado por genótipos antigos e modernos utilizados para a produção de xaropes. Genótipos de sorgo sacarino podem ser usados para o desenvolvimento de novas variedades com maior conteúdo de açúcar e caldo.The objective of this work was to evaluate the diversity and genetic relationships between lines and varieties of the sweet sorghum (Sorghum bicolor) germplasm bank of the National Institute for Forestry, Agriculture and Livestock Research, Mexico, using AFLP and SSR markers. The molecular markers revealed robust amplification profiles and were able to differentiate the 41 genotypes of sweet sorghum evaluated. Analysis of the frequency and distribution of polymorphic fragments allowed for the detection of unique (AFLP) and rare (SSR) alleles in several genotypes (RBSS‑8, RBSS‑9, RBSS‑25, RBSS‑32, and RBSS‑37), indicating that these markers may be associated with a feature that has not yet been determined or may be useful for the identification of these genotypes. The genetic relationships indicated the presence of at least two types of sweet sorghum: a group of modern genotypes used for sugar and biofuel production, and another group consisting of historic and modern genotypes used for the production of syrups. Sweet sorghum genotypes may be used to develop new varieties with higher sugar and juice contents

The Caldera. No. 20

En las páginas de ésta edición encontrarán, en gran parte de los textos elaborados por nuestros educandos, un sencillo pero sentido homenaje a un ser humano que creyó, luchó y dio su vida, por causa de la libertad, de la igualdad, de la paz, por la defensa de sus profundas creencias y de una vida consagrada a su amada patria.PROYECTOS DE INVESTIGACIÓN.- PERFILES CALDISTAS.- LECTURA EN EL CALDAS Experiencias Significativas.- GRAN FINAL III Concurso Intercolegiado de Oratoria.-DEPORTES EN EL CALDAS.- BICENTENARIO FRANCISCO JOSÉ DE CALDAS.- ADIVINANZAS.- EXPRESIONES CALDISTAS.- GALERÍA DE IMÁGENES.-In the pages of this edition you will find, in a large part of the texts prepared by our students, a simple but a heartfelt tribute to a human being who believed, fought and gave his life, for the sake of freedom, equality, peace, for the defense of his deep beliefs and a life consecrated to his beloved homeland.Modalidad Presencia

A qué sabe el norte?

Libro que compila saberes de las recetas ancestrales y sabores tradicionales de la gastronomía Nortesantandereana, recopila 3 rutas de turismo gastronómico que conjuga 30 municipios de norte de santander y más de 300 tipos de sopas, platos fuertes y postres.Book that compiles knowledge of ancestral recipes and traditional flavors of gastronomy Nortesantandereana, compiles 3 routes of gastronomic tourism that brings together 30 municipalities of northern Santander and more than 300 types of soups, main dishes and desserts.Ruta del durazno y el agua -- Ruta del oro negro -- Ruta del río y la gran convención -- Las mujeres de la independencia -- Honrando a nuestros portadores del saber -- A qué sabe el norte-recetarioPrimera ediciónna230 página

Association between Short-Term Exposure to Criteria Air Pollutants and Daily Mortality in Mexico City: A Time Series Study

The short-term effects of air pollution on the health of residents in the metropolitan area of Mexico City (MAMC) were assessed in 11 municipalities from 2012 to 2015 using a time-series approach. Site 11 (Azcapotzalco) presented values above the limit of the Mexican regulations for SO2, while values above the limit were found for CO for the city’s other municipalities. Site 8 (Cuauhtemoc) presented the highest number of values above the maximum permissible limit for NO2, while site 1 (Alvaro Obregon) presented the highest number of values above the limit for O3. Finally, site 7 (Venustiano Carranza) presented the highest number of values above the limit for PM10. In general, the southeast and northwest of the city presented high levels of pollution for the criteria air pollutants: SO2, NO2, and PM10, while the southeast presented the highest levels for O3. A great number of associations were found between daily mortality and a 10% increase in the concentrations of most of the pollutants tested, for most of the municipalities of the city. Significant relative risk index (RRI) increases were found for people >60 years of age for all pollutants and municipalities, increases which resulted from a 10% increase in the daily mean concentrations of all pollutants tested. As the RRIs observed were low but significant, the findings are, thus, of public concern. The present study demonstrated that older people are at considerable risk from atmospheric pollution

Demonstration of local adaptation in maize landraces by reciprocal transplantation.

Populations are locally adapted when they exhibit higher fitness than foreign populations in their native habitat. Maize landrace adaptations to highland and lowland conditions are of interest to researchers and breeders. To determine the prevalence and strength of local adaptation in maize landraces, we performed a reciprocal transplant experiment across an elevational gradient in Mexico. We grew 120 landraces, grouped into four populations (Mexican Highland, Mexican Lowland, South American Highland, South American Lowland), in Mexican highland and lowland common gardens and collected phenotypes relevant to fitness and known highland-adaptive traits such as anthocyanin pigmentation and macrohair density. 67k DArTseq markers were generated from field specimens to allow comparisons between phenotypic patterns and population genetic structure. We found phenotypic patterns consistent with local adaptation, though these patterns differ between the Mexican and South American populations. Quantitative trait differentiation (Q ST) was greater than neutral allele frequency differentiation (F ST) for many traits, signaling directional selection between pairs of populations. All populations exhibited higher fitness metric values when grown at their native elevation, and Mexican landraces had higher fitness than South American landraces when grown in these Mexican sites. As environmental distance between landraces' native collection sites and common garden sites increased, fitness values dropped, suggesting landraces are adapted to environmental conditions at their natal sites. Correlations between fitness and anthocyanin pigmentation and macrohair traits were stronger in the highland site than the lowland site, supporting their status as highland-adaptive. These results give substance to the long-held presumption of local adaptation of New World maize landraces to elevation and other environmental variables across North and South America

3er. Coloquio: Fortalecimiento de los Colectivos de Docencia

Las memorias del 3er. Coloquio de Fortalecimiento de Colectivos de Docencia deben ser entendidas como un esfuerzo colectivo de la comunidad de académicos de la División de Ciencias y Artes para el Diseño, en medio de la pandemia COVID-19, con el fin de: • Analizar y proponer acciones concretas que promuevan el mejoramiento de la calidad docente en la División. • Proponer acciones que permitan continuar fortaleciendo los cursos con modalidad a distancia (remotos). • Ante un escenario que probablemente demandará en el mediano plazo, transitar del modelo remoto a un modelo híbrido, proponer acciones a considerar para la transición de los cursos. • Planear y preparar cursos de nivelación de conocimientos, para cuando se transite a la impartición de la docencia de manera mixta o presencial, dirigidos a los alumnos que no hayan tenido oportunidad de desarrollar actividades relevantes para su formación, como prácticas de talleres y laboratorios, visitas, o alguna otra actividad relevante