Manual de mantenimiento para sistemas de automatización de estaciones descompresoras de gnc, para alcanos de Colombia s.a. e.s.p.

Este proyecto se elabora con el fin indagar, documentar e implementar una estrategia segura, confiable y metódica que contenga información del proceso, equipos, función e instrucciones para el mantenimiento de los sistemas de automatización implementados por Alcanos De Colombia S.A. E.S.P. en las estaciones descompresoras de Gas Natural Comprimido GNC. El propósito es diseñar un manual de mantenimiento para los sistemas de automatización de estaciones descompresoras de GNC, que permita dar confiabilidad en la operación y prolongar la vida útil de los equipos que conforman los sistemas de automatización.This project is prepared in order to investigate, document and implement a safe, reliable and methodical strategy that contains information on the process, equipment, function and instructions for the maintenance of the automation systems implemented by Alcanos De Colombia S.A. E.S.P. at the decompression stations of Compressed Natural Gas GNC. The purpose is to design a maintenance manual for the GNC decompressor station automation systems, which allows for reliability in the operation and prolong the useful life of the equipment that make up the automation systems

Arabidopsis LEC1 and LEC2 Orthologous Genes Are Key Regulators of Somatic Embryogenesis in Cassava

High genotype-dependent variation in friable embryogenic callus (FEC) induction and subsequent somaclonal variation constitute bottlenecks for the application and scaling of genetic transformation (GT) technology to more farmer- and industry-preferred cassava varieties. The understanding and identification of molecular factors underlying embryogenic development in cassava may help to overcome these constraints. Here, we described the Arabidopsis thaliana LEAFY COTYLEDON (LEC) LEC1 and LEC2 orthologous genes in cassava, designated as MeLEC1 and MeLEC2, respectively. Expression analyses showed that both, MeLEC1 and MeLEC2, are expressed at higher levels in somatic embryogenic (SE) tissues in contrast with differentiated mature tissues. The rapid expression increase of MeLEC genes at early SE induction times strongly suggests that they are involved in the transition from a somatic to an embryonic state, and probably, in the competence acquisition for SE development in cassava. The independent overexpression of the MeLEC genes resulted in different regenerated events with embryogenic characteristics such as MeLEC1OE plants with cotyledon-like leaves and MeLEC2OE plants with somatic-like embryos that emerged over the surface of mature leaves. Transcript increases of other embryo-specific regulating factors were also detected in MeLECOE plants, supporting their mutual interaction in the embryo development coordination. The single overexpression of MeLEC2 was enough to reprogram the vegetative cells and induce direct somatic embryogenesis, which converts this gene into a tool that could improve the recovery of transformed plants of recalcitrant genotypes. The identification of MeLEC genes contributes not only to improve our understanding of SE process in cassava, but also provides viable alternatives to optimize GT and advance in gene editing in this crop, through the development of genotype-independent protocols

Identification of putative cancer genes through data integration and comparative genomics between plants and humans

Coordination of cell division with growth and development is essential for the survival of organisms. Mistakes made during replication of genetic material can result in cell death, growth defects, or cancer. Because of the essential role of the molecular machinery that controls DNA replication and mitosis during development, its high degree of conservation among organisms is not surprising. Mammalian cell cycle genes have orthologues in plants, and vice versa. However, besides the many known and characterized proliferation genes, still undiscovered regulatory genes are expected to exist with conserved functions in plants and humans. Starting from genome-wide Arabidopsis thaliana microarray data, an integrative strategy based on coexpression, functional enrichment analysis, and cis-regulatory element annotation was combined with a comparative genomics approach between plants and humans to detect conserved cell cycle genes involved in DNA replication and/or DNA repair. With this systemic strategy, a set of 339 genes was identified as potentially conserved proliferation genes. Experimental analysis confirmed that 20 out of 40 selected genes had an impact on plant cell proliferation; likewise, an evolutionarily conserved role in cell division was corroborated for two human orthologues. Moreover, association analysis integrating Homo sapiens gene expression data with clinical information revealed that, for 45 genes, altered transcript levels and relapse risk clearly correlated. Our results illustrate how a systematic exploration of the A. thaliana genome can contribute to the experimental identification of new cell cycle regulators that might represent novel oncogenes or/and tumor suppressors

The MCM-Binding Protein ETG1 Aids Sister Chromatid Cohesion Required for Postreplicative Homologous Recombination Repair

The DNA replication process represents a source of DNA stress that causes potentially spontaneous genome damage. This effect might be strengthened by mutations in crucial replication factors, requiring the activation of DNA damage checkpoints to enable DNA repair before anaphase onset. Here, we demonstrate that depletion of the evolutionarily conserved minichromosome maintenance helicase-binding protein ETG1 of Arabidopsis thaliana resulted in a stringent late G2 cell cycle arrest. This arrest correlated with a partial loss of sister chromatid cohesion. The lack-of-cohesion phenotype was intensified in plants without functional CTF18, a replication fork factor needed for cohesion establishment. The synergistic effect of the etg1 and ctf18 mutants on sister chromatid cohesion strengthened the impact on plant growth of the replication stress caused by ETG1 deficiency because of inefficient DNA repair. We conclude that the ETG1 replication factor is required for efficient cohesion and that cohesion establishment is essential for proper development of plants suffering from endogenous DNA stress. Cohesion defects observed upon knockdown of its human counterpart suggest an equally important developmental role for the orthologous mammalian ETG1 protein

Manifiesto por el sí

Al mirar mi vida en retrospectiva, con la aparente objetividad que da la calma madurez, puedo afirmar que he vivido una vida tranquila. Ha sido una vida tranquila, extrañamente tranquila, cuando es contextualizada en el marco de una nación por siempre oprimida por la guerra

Sequenciação de próxima geração e seu contexto eugênico no embrião humano

27 páginasEl advenimiento de las tecnologías ómicas y, más concretamente, los avances alcanzados con tecnologías específicas de secuenciación de segunda y tercera generación brindan la posibilidad de conocer la secuencia particular de genomas individuales a un costo relativamente asequible. En un futuro cercano, la combinación de dichas tecnologías de secuenciación con análisis funcionales específicos pretende identificar a un nivel genómico, con un grado de detalle mucho más fino que las antiguas pruebas de diagnóstico molecular, las enfermedades asociadas al mapa genético de cada persona. Nuevos dilemas en distintos contextos han surgido con la llegada de este tipo de tecnologías. Desde una perspectiva bioética, el problema no radica en la investigación detallada del genoma de cada persona per se, sino en la finalidad que se le puede dar a la información derivada de dicha investigación científica, la cual podría convertirse en una herramienta útil para seleccionar, rechazar y discriminar a personas por presentar alguna enfermedad hereditaria o que tienen la potencialidad de desarrollar enfermedades puntuales en el futuro. Este artículo analiza la relación entre la mentalidad eugenésica, el concepto de calidad de vida y el diagnóstico molecular genómico, cuando este es aplicado a embriones humanos con la finalidad de evitar su implantación, acción que atenta contra la vida y contra la dignidad de la persona en sus primeras etapas del desarrollo.The advent of omic technologies and, more specifically, the progress made with specific second- and third-generation sequencing technologies, gives us the possibility of knowing the particular sequence of individual genomes at a relatively affordable cost. In the not too distant future, these sequencing technologies combined with specific functional analysis will be used, at a genomic level and with a much finer degree of detail than the old molecular diagnostic tests, to identify the diseases associated with each person’s genetic map. New dilemmas in different contexts have emerged with the advent of these technologies. From a bioethical perspective, the problem is not rooted in detailed research on the human genome per se, but in the purpose that can be given to information derived from this type of scientific research, which could become a useful tool for selecting, rejecting and discriminating against persons, because they have a hereditary disease or the potential to develop specific diseases in the future. This article analyzes the relationship between the eugenic mentality, the concept of quality of life, and genomic molecular diagnosis, when applied to human embryos for the purpose of preventing their implantation. Such action threatens the very life and dignity of a human being in its early stages of development

Secuenciación de próxima generación y su contexto eugenésico en el embrión humano

The advent of omic technologies and, more specifically, the progress made with specific second- and third-generation sequencing technologies, gives us the possibility of knowing the particular sequence of individual genomes at a relatively affordable cost. In the not too distant future, these sequencing technologies combined with specific functional analysis will be used, at a genomic level and with a much finer degree of detail than the old molecular diagnostic tests, to identify the diseases associated with each person’s genetic map. New dilemmas in different contexts have emerged with the advent of these technologies. From a bioethical perspective, the problem is not rooted in detailed research on the human genome per se, but in the purpose that can be given to information derived from this type of scientific research, which could become a useful tool for selecting, rejecting and discriminating against persons, because they have a hereditary disease or the potential to develop specific diseases in the future. This article analyzes the relationship between the eugenic mentality, the concept of quality of life, and genomic molecular diagnosis, when applied to human embryos for the purpose of preventing their implantation. Such action threatens the very life and dignity of a human being in its early stages of development.A chegada das tecnologias ômicas, e mais concretamente, os avanços atingidos com tecnologias específicas de sequenciação de segunda e terceira geração, dão a possibilidade de conhecer a sequência particular de genomas individuais a um custo relativamente acessível. Num futuro próximo, a combinação dessas tecnologias de sequenciação com análises funcionais específicas pretende identificar a um nível genômico, com um grau de detalhe bem mais fino que os antigos exames de diagnóstico molecular, as doenças associadas ao mapa genético de cada pessoa. Novos dilemas em diferentes contextos surgiram com a chegada desse tipo de tecnologias. A partir de uma perspectiva bioética, o problema não é a pesquisa detalhada do genoma da cada pessoa per se, mas, sim, a finalidade que pode ser dada à informação derivada dessa pesquisa científica, a qual poderia se transformar numa ferramenta útil para selecionar, recusar e discriminar a pessoas por apresentar alguma doença hereditária ou que têm a potencialidade de desenvolver doenças pontuais no futuro. Este artigo analisa a relação entre a mentalidade eugênica, o conceito de qualidade de vida e o diagnóstico molecular genômico, quando este é aplicado a embriões humanos com a finalidade de evitar sua implantação, ação que atenta contra a vida e contra a dignidade da pessoa em suas primeiras etapas do desenvolvimento.El advenimiento de las tecnologías ómicas y, más concretamente, los avances alcanzados con tecnologías específicas de secuenciación de segunda y tercera generación brindan la posibilidad de conocer la secuencia particular de genomas individuales a un costo relativamente asequible. En un futuro cercano, la combinación de dichas tecnologías de secuenciación con análisis funcionales específicos pretende identificar a un nivel genómico, con un grado de detalle mucho más fino que las antiguas pruebas de diagnóstico molecular, las enfermedades asociadas al mapa genético de cada persona. Nuevos dilemas en distintos contextos han surgido con la llegada de este tipo de tecnologías. Desde una perspectiva bioética, el problema no radica en la investigación detallada del genoma de cada persona per se, sino en la finalidad que se le puede dar a la información derivada de dicha investigación científica, la cual podría convertirse en una herramienta útil para seleccionar, rechazar y discriminar a personas por presentar alguna enfermedad hereditaria o que tienen la potencialidad de desarrollar enfermedades puntuales en el futuro. Este artículo analiza la relación entre la mentalidad eugenésica, el concepto de calidad de vida y el diagnóstico molecular genómico, cuando este es aplicado a embriones humanos con la finalidad de evitar su implantación, acción que atenta contra la vida y contra la dignidad de la persona en sus primeras etapas del desarrollo. doi:10.5294/pebi.2016.20.2.

PASTEUR: an indexing and localization system for software components

PASTEUR: un sistema para indexación y búsqueda de componentes de software. (Pomares Quimbaya, Alexandra y Morales Chavarro, Javier Mauricio) Resumen Este artículo presenta PASTEUR, un sistema de indexación y localización de componentes de software a gran escala que promueve el comercio de componentes en ambientes abiertos, dinámicos y heterogéneos. Su diseño e implementación está apoyado en la tecnología de los sistemas P2P DHT de los cuales toma los servicios de búsqueda y almacenamiento distribuido, adicionando servicios de datos distribuidos, particularmente para el manejo de metadatos y consultas avanzadas a partir de ellos. La propuesta de PASTEUR como capa DDS está propuesta para ser usada en el ámbito de identificación y selección de componentes pero puede ser utilizada en cualquier ámbito en donde se requiera compartir recursos. PASTEUR fue desarrollado usando una implementación de código abierto de Pastry, sus funcionalidades fueron probadas y evaluadas en un ambiente controlado.1 PASTEUR: an indexing and localization system for software components. (Pomares Quimbaya, Alexandra y Morales Chavarro, Javier Mauricio) Abstract This article presents PASTEUR, a system of indexing and localization of software components on large scale that promotes the commerce of components, in open, dynamic and heterogeneous environment. Its design and implementation are supported in the technology of systems P2P DHT from which it takes the distributed lookup and distributed storage services, adding services of distributed data, particularly for the handling of metadata and queries from them. The PASTEUR proposal as a DDS is proposed to be used in the scope of identification and selection of components, but can be used in any scope where it is required to share resources. PASTEUR was developed using an open source implementation of Pastry, their functionalities were proven and evaluated in a controlled environment. Ponencia publicada en: Memorias del Congreso Latinoamericano de Computación de Alto Rendimiento (CLCAR) Santa Marta, Colombia 13 al 18 de agosto 2007. J.C. Jaime y G. Díaz (editores), Publicaciones Univ. Industrial de Santander, Bucaramanga, Colombia (2007)[email protected]@uniandes.edu.coNivel analític