Remoción de arsénico mediante procesos de membrana

César Calderón Mólgora María Laura Quezada Jiménez CARLOS HERNANDEZ YAÑEZ (2012, [Artículo])

Con el objeto de verificar la viabilidad técnica y económica de potabilizar mediante procesos de membrana agua contaminada con arsénico, se llevaron a cabo pruebas de tratabilidad utilizando pilotos de coagulación-microfiltración (C-MF) y de nanofiltración (NF) en un pozo, cuya concentración promedio de arsénico fue de 67 μg/l y la conductividad promedio de 975 μS/cm.

Arsénico Coagulación Membranas Microfiltración Nanofiltración INGENIERÍA Y TECNOLOGÍA

Physiological ecology of Mexican CAM plants: history, progress, and opportunities

Joel David Flores Rivas Oscar Briones Villareal JOSE LUIS ANDRADE (2022, [Artículo])

"In Mexico, plants with crassulacean acid metabolism (CAM) are part of the Mexican culture, have different uses and are even emblematic. Unfortunately, only a small fraction of the Mexican CAM plants has been studied physiologically. For this review, the following questions were considered: What ecophysiological studies have been conducted with CAM species native to Mexico? What ecophysiological processes in Mexican CAM plants are the most studied? What type of ecophysiological studies with CAM plants are still needed? A database of scientific studies on CAM plant species from Mexico was documented, including field and laboratory works for species widely distributed, and those studies made outside Mexico with Mexican species. Physiological processes were grouped as germination, photosynthesis, and water relations. Most studies were done for CAM species of Cactaceae, Bromeliaceae, Asparagaceae and Orchidaceae, andmost ecophysiological studies have been done on germination of cacti. Field and laboratory studies on photosynthesis and water relations were mostly for terrestrial cacti and epiphytic bromeliads. There were few physiological studies with CAM seedlings in Mexico and few studies using stable isotopes of water and carbon of CAM plants in the field. More field and laboratory studies of physiological responses and plasticity of CAM plants to multiple stress factors are required to model plant responses to global climate change. In general, more physiological studies are essential for all CAM species and for species of the genus Clusia, with C3-CAM and CAM members, which can become ecologically important under some climate change scenarios."

Asparagaceae Bromeliaceae Cactaceae Germination Photosynthesis Water relations Orchidaceae BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA VEGETAL (BOTÁNICA) BIOLOGÍA VEGETAL (BOTÁNICA)

Physiological and molecular aspects of seed longevity: exploring intra-species variation in eight Pisum sativum L. accessions

Maraeva Gianella Daniele Dondi Andreas Börner Anca Macovei Andrea Pagano Filippo Guzzon Alma Balestrazzi (2022, [Artículo])

Thermogravimetry CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA CARBOHYDRATES PROLINE TOCOPHEROLS GENETICS PHYSIOLOGY PEAS SEEDS SUGARS DIFFERENTIAL SCANNING CALORIMETRY SEED LONGEVITY THERMOGRAVIMETRIC ANALYSIS

A mid-density single-nucleotide polymorphism panel for molecular applications in cowpea (Vigna unguiculata (L.) Walp)

Patrick Ongom Ana Luisa Garcia-Oliveira Eng Hwa Ng Stefano Lonardi Timothy Close (2024, [Artículo])

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA SINGLE NUCLEOTIDE POLYMORPHISMS COWPEAS GENOTYPING LINKAGE DISEQUILIBRIUM QUANTITATIVE TRAIT LOCI

RNAseq of diverse spring wheat cultivars released during last 110 years

awais rasheed Huihui Li (2023, [Artículo])

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA RNA SEQUENCE SPRING WHEAT ROOT ARCHITECTURE GENES

Dialéctica, estructura y génesis: la presencia de Lautman en lo virtual deleuziano

Dialectic, structure and genesis: Lautman’s presence in Deleuze’s virtual

Gonzalo Santaya (2022, [Artículo])

Este artículo busca realizar un aporte a los estudios deleuzia nos en torno al concepto de lo virtual, a partir del examen de una fuente fundamental para su determinación: la noción de “dialéctica” extraída de la filosofía matemática de Albert Lautman. Antes que referir a Platón o Hegel, Deleuze se apropia de la dialéctica a partir de este autor, para determinar el plano de lo virtual como un campo problemático,

estructural-genético, simultáneamente inmanente y trascendente a las soluciones actuales que produce. Analizaremos primero el desarrollo del propio Lautman sobre la dialéctica en la filosofía matemática, para

mostrar luego cómo Deleuze pretende extender esa dialéctica más allá de la matemática; finalmente, presentamos algunas reflexiones sobre el privilegio de la matemática que caracteriza los desarrollos de lo virtual en Diferencia y repetición.

This paper aims to make a contribution to Deleuzian studies concerning the concept of the virtual, by examining a fundamental source in its determination: the notion of “dialectic” developed in Albert Lautman’s philosophy of mathematics. It is not Plato or Hegel, but Lautman, who Deleuze chooses to address his conception of the dialectic, determining the virtual field as a problematic one, which is both

structural and genetic, and simultaneously immanent and transcendent

to the actual solutions it produces. We will first analyze Lautman’s own

presentation of the dialectic in philosophy of mathematics to show, secondly, how Deleuze extends this dialectic beyond mathematics; finally, we make some considerations about the privilege given to mathematics in Deleuze’s developments on the virtual in Difference and Repetition.

HUMANIDADES Y CIENCIAS DE LA CONDUCTA Gilles Deleuze, 1925-1995 - Crítica e interpretación Albert Lautman, 1908-1944 - Crítica e interpretación Dialéctica Virtual Matemáticas Gilles Deleuze. Diferencia y repetición, 1968 - Crítica e interpretación Gilles Deleuze, 1925-1995 - Criticism and interpretation Albert Lautman, 1908-1944 - Criticism and interpretation Dialectics Virtual Mathematics Gilles Deleuze. Difference and Repetition, 1968 - Criticism and interpretation

Transformation and innovation of knowledge in the construction and sustainable function of housing at the headwaters of San Juan Chamula.

Alejandra Trujillo Miguel Sánchez Álvarez (2022, [Artículo, Artículo])

SUMMARY

 

San Juan Chamula, Chiapas, is one of the most representative cultures of the native peoples of Mexico. The municipal seat is made up of three main neighborhoods: San Juan, San Sebastián and San Pedro. In ancient times, the architectural design of the houses was made of materials such as straw, adobe, bajareque and others of organic origin, which were part of the natural environment of the inhabitants. Thus, houses were built based on the use of natural elements available to the inhabitants as a result of the use of primary sector activity.

 

From the Chamula worldview housing has played functions for rest and shelter, therefore it was considered as a sacred place. When building one, ceremonies and offerings were carried out to appease any disgust of the guardians of Mother Earth, as they considered that nature had life, and to avoid any misfortune among the members of the family. For this, it was necessary to offer music, songs, and special dishes to feed the house and the Earth, so there would be harmony and well-being. Today, that worldview has been disrupted by the presence of multiple religions and other factors.

 

Chamula housing has gone through different stages of transition, from 1990 onwards, it was made of materials such as bricks, blocks and cement. With international migration and the arrival of young Chamula in the United States, changes in the building styles and function of housing are observed, as well as a loss of Chamula-type architectural knowledge, so that traditional architectural knowledge remains only with the elderly. Nowadays, Chamula masons and house builders opt for a foreign architectural design like California, thus changing their cultural identity, their way of life and their relationship with nature.

 

Keywords: traditional architecture, migration, architectural change.

traditional architecture migration architectural change arquitectura tradicional cambio arquitectónico chamula migración vivienda CIENCIAS SOCIALES CIENCIAS SOCIALES

Agricultural value chains in Sudan: an annotated bibliography

Hugo De Groote Paswel Marenya (2023, [Libro])

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA AGRICULTURAL VALUE CHAINS CASH CROPS FOOD CROPS LIVESTOCK SOCIOECONOMIC ASPECTS GENDER SOCIAL INCLUSION POSTHARVEST LOSSES BIBLIOGRAPHIES

Implementation new tools and technologies in the GMP Africa Breeding Pipelines

Yoseph Beyene (2023, [Objeto de congreso])

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA NEW TECHNOLOGY BREEDING PIPES GERMPLASM PHENOTYPING

“We place our hope in the land”: defense of the territory against mining in Ixtacamaxtitlán, Puebla

Veronica Vazquez_Garcia Esteban Martínez Vásquez (2023, [Artículo, Artículo])

Mexico occupies first place in mining exploration in Latin America, a situation that has caused alarm among native peoples because the implementation of extractive projects threatens their vital space. The objective of this paper is to analyze the actions of Corporate Social Responsibility (CSR) of the Ixtaca Project in Ixtacamaxtitlán, Puebla, as well as the strategies of territorial defense undertaken by the communities to stop its expansion. Data was gathered through one survey, one workshop and various interviews conducted in three communities affected by the project. Results discuss three actions of CSR: 1) job offers; 2) investment in community infrastructure; 3) support for social events. Three main defense strategies were identified: 1) collective agreements refusing to sell water to the company; 2) legal litigations in favor of the right to be consulted as native peoples; 3) the strengthening of peasant agriculture thanks to the defense of the ejido, the conservation of irrigation water and the support received from the federal program Sembrando Vida. The paper concludes that, despite the negative impacts of RCS actions, these strategies have proven effective because mining concessions have been cancelled and some families have returned to agriculture.  

native peoples peasantry mining OIT Convention socioenvironmental conflict pueblos originarios campesinado minería Convenio OIT conflicto socioambiental CIENCIAS SOCIALES CIENCIAS SOCIALES