Examinando por Materia "classification"

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    Afectación de las habilidades sociales en el trastorno bipolar
    (Universidad EAFIT, 2019) Mora Muriel, Carolina; Echeverri Álvarez,Jonathan
    This study seeks to describe, through the experience and perceptions of patients, how social skills are affected in some subjects diagnosed with bipolar disorder in the city of Medellín in 2019. Objective: to identify the various factors influencing the development of social skills, to describe the characteristics that some subjects possess about bipolar disorder, and to give an analysis of these social skills affects in some subjects with bipolar disorder. Method: The tendencies denoted in the investigation on the two variables are approached through historical accounts, contextualizations and/or different postures for the suffering of this one in the psychic life. With the following exploration instrument, four semi-structured interviews were carried out in order to compile all the information referring to the subjects. The type of study is qualitative, to four people diagnosed with 2 bipolar disorder in the city of Medellín in 2019. Results: The effects due to the diagnosis of bipolar disorder, are subjective and depend on how conscious the patients are or not of the treatment and their desire to moderate their symptoms or crisis that can become impediments for being socially skillful, all those social skills will depend on the cultural schemes they possess, such as emotions, beliefs, attitudes, expectations, economic situation, among other significant.
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    Effect of medium components and culture conditions in Bacillus subtilis EA-CB0575 spore production
    (Springer Berlin Heidelberg, 2015-10-01) Posada-Uribe, Luisa F.; Romero-Tabarez, Magally; Villegas-Escobar, Valeska; Universidad EAFIT. Departamento de Ciencias; Ciencias Biológicas y Bioprocesos (CIBIOP)
    Bacillus subtilis spores have important biotechnological applications; however, achieving both, high spore cell densities and sporulation efficiencies in fermentation, is poorly reported. In this study, medium components and culture conditions were optimized with different statistical methods to increase spore production of the plant growth promoting rhizobacteria B. subtilis EA-CB0575. Key medium components were determined with Plackett-Burman (PB) design, and the optimum concentration levels of two components (glucose, MgSO4·7H2O) were optimized with a full factorial and central composite design, achieving 1.37 × 10(9) CFU/mL of spore cell density and 93.5 % of sporulation efficiency in shake flask. The optimized medium was used to determine the effect of culture conditions on spore production at bioreactor level, finding that maintaining pH control did not affect significantly spore production, while the interaction of agitation and aeration rates had a significant effect on spore cell density. The overall optimization generated a 17.2-fold increase in spore cell density (8.78 × 10(9) CFU/mL) and 1.9-fold increase in sporulation efficiency (94.2 %) compared to that of PB design. These results indicate the potential of B. subtilis EA-CB0575 to produce both, high spore cell densities and sporulation efficiencies, with very low nutrient requirements and short incubation period which can represent savings of process production.
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    Evolutionary and sequence-based relationships in bacterial AdoMet-dependent non-coding RNA methyltransferases
    (BioMed Central Ltd., 2014-01-01) Mosquera-Rendón, J.; Cárdenas-Brito, S.; Pineda, J.D.; Corredor, M.; Benítez-Páez, A.; Mosquera-Rendón, J.; Cárdenas-Brito, S.; Pineda, J.D.; Corredor, M.; Benítez-Páez, A.; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
    Background: RNA post-transcriptional modification is an exciting field of research that has evidenced this editing process as a sophisticated epigenetic mechanism to fine tune the ribosome function and to control gene expression. Although tRNA modifications seem to be more relevant for the ribosome function and cell physiology as a whole, some rRNA modifications have also been seen to play pivotal roles, essentially those located in central ribosome regions. RNA methylation at nucleobases and ribose moieties of nucleotides appear to frequently modulate its chemistry and structure. RNA methyltransferases comprise a superfamily of highly specialized enzymes that accomplish a wide variety of modifications. These enzymes exhibit a poor degree of sequence similarity in spite of using a common reaction cofactor and modifying the same substrate type. Results: Relationships and lineages of RNA methyltransferases have been extensively discussed, but no consensus has been reached. To shed light on this topic, we performed amino acid and codon-based sequence analyses to determine phylogenetic relationships and molecular evolution. We found that most Class I RNA MTases are evolutionarily related to protein and cofactor/vitamin biosynthesis methyltransferases. Additionally, we found that at least nine lineages explain the diversity of RNA MTases. We evidenced that RNA methyltransferases have high content of polar and positively charged amino acid, which coincides with the electrochemistry of their substrates. Conclusions: After studying almost 12,000 bacterial genomes and 2,000 patho-pangenomes, we revealed that molecular evolution of Class I methyltransferases matches the different rates of synonymous and non-synonymous substitutions along the coding region. Consequently, evolution on Class I methyltransferases selects against amino acid changes affecting the structure conformation. © 2014 Mosquera-Rendón et al.; licensee BioMed Central Ltd.