XVI International Congress of Control Electronics and Telecommunications: "Techno-scientific considerations for a post-pandemic world intensive in knowledge, innovation and sustainable local development"

Este título, sugestivo por los impactos durante la situación de la Covid 19 en el mundo, y que en Colombia lastimosamente han sido muy críticos, permiten asumir la obligada superación de tensiones sociales, políticas, y económicas; pero sobre todo científicas y tecnológicas. Inicialmente, esto supone la existencia de una capacidad de la sociedad colombiana por recuperar su estado inicial después de que haya cesado la perturbación a la que fue sometida por la catastrófica pandemia, y superar ese anterior estado de cosas ya que se encontraban -y aún se encuentran- muchos problemas locales mal resueltos, medianamente resueltos, y muchos sin resolver: es decir, habrá que rediseñar y fortalecer una probada resiliencia social existente - producto del prolongado conflicto social colombiano superado parcialmente por un proceso de paz exitoso - desde la tecnociencia local; como lo indicaba Markus Brunnermeier - economista alemán y catedrático de economía de la Universidad de Princeton- en su libro The Resilient Society…La cuestión no es preveerlo todo sino poder reaccionar…aprender a recuperarse rápido.This title, suggestive of the impacts during the Covid 19 situation in the world, and which have unfortunately been very critical in Colombia, allows us to assume the obligatory overcoming of social, political, and economic tensions; but above all scientific and technological. Initially, this supposes the existence of a capacity of Colombian society to recover its initial state after the disturbance to which it was subjected by the catastrophic pandemic has ceased, and to overcome that previous state of affairs since it was found -and still is find - many local problems poorly resolved, moderately resolved, and many unresolved: that is, an existing social resilience test will have to be redesigned and strengthened - product of the prolonged Colombian social conflict partially overcome by a successful peace process - from local technoscience; As Markus Brunnermeier - German economist and professor of economics at Princeton University - indicates in his book The Resilient Society...The question is not to foresee everything but to be able to react...learn to recover quickly.Bogot

Interacción entre factores ambientales y raciales sobre la prevalencia de hemotrópicos en hembras bovinas doble propósito en sabanas inundables araucanas, Colombia

The objective of this work was to determine the prevalence of hemotropics A. marginale, Babesia spp. and Trypanosoma spp. and environmental and genetic interactions in milking cows of the dual purpose system in the Municipality of Arauca, Colombia. A blood sample from the middle coccygeal vein was collected from 333 female bovines of different ages, located on 18 livestock farms, and the inclusion criterion was only the females that were milked at each farm. Sampling was performed for convenience in summer and winter. Samples were analyzed using Wright and Hemacolor® techniques. The racial groups were: Cebu (n = 157), Criolla (n = 14), Criolla x Cebu (n = 32), Mestiza (n = 64), Brown x Cebu (n=22), Simental x Cebu (n = 16) and Holstein x Cebu (n = 5). Through contingency tables the percentage amount of animals positive to hemotrópics was determined. The data were processed in Infostat; 72.22% of farms were positive for A. marginale; 66.66% for Trypanosoma spp and 16.66% for Babesia spp. The overall prevalence was 43.54%, the most frequent hemoparasite was A. marginale, (24.92%), followed by Trypanosoma spp, (14.41%) and Babesia spp (4.2%). No mixed infections were identified. A significant association (P = 0.0001) of the farms with the three hemoparasites was observed; A. marginale was dependent on the racial group (P = 0.0046), Babesia spp and A. marginale had time-of-year dependence (P 0.05). It is concluded that in the Araucanian floodplain region the highest prevalence of hemoparasites was associated with A. marginale and Trypanosoma spp, Animals with a predominance of taurus are more susceptible than Creoles and the interactions are given to general management, sanitary program, time and agroecological location of livestock farms. © Universidad del Zulia 2018, Derechos Reservados. Maracaibo, Venezuela. Acerca de LUZ Web. [email protected]

Interacción entre factores ambientales y raciales sobre la prevalencia de hemotrópicos en hembras bovinas doble propósito en sabanas inundables araucanas, Colombia

The objective of this work was to determine the prevalence of hemotropics A. marginale, Babesia spp. and Trypanosoma spp. and environmental and genetic interactions in milking cows of the dual purpose system in the Municipality of Arauca, Colombia. A blood sample from the middle coccygeal vein was collected from 333 female bovines of different ages, located on 18 livestock farms, and the inclusion criterion was only the females that were milked at each farm. Sampling was performed for convenience in summer and winter. Samples were analyzed using Wright and Hemacolor® techniques. The racial groups were: Cebu (n = 157), Criolla (n = 14), Criolla x Cebu (n = 32), Mestiza (n = 64), Brown x Cebu (n=22), Simental x Cebu (n = 16) and Holstein x Cebu (n = 5). Through contingency tables the percentage amount of animals positive to hemotrópics was determined. The data were processed in Infostat; 72.22% of farms were positive for A. marginale; 66.66% for Trypanosoma spp and 16.66% for Babesia spp. The overall prevalence was 43.54%, the most frequent hemoparasite was A. marginale, (24.92%), followed by Trypanosoma spp, (14.41%) and Babesia spp (4.2%). No mixed infections were identified. A significant association (P = 0.0001) of the farms with the three hemoparasites was observed; A. marginale was dependent on the racial group (P = 0.0046), Babesia spp and A. marginale had time-of-year dependence (P 0.05). It is concluded that in the Araucanian floodplain region the highest prevalence of hemoparasites was associated with A. marginale and Trypanosoma spp, Animals with a predominance of taurus are more susceptible than Creoles and the interactions are given to general management, sanitary program, time and agroecological location of livestock farms. © Universidad del Zulia 2018, Derechos Reservados. Maracaibo, Venezuela. Acerca de LUZ Web. [email protected]

Reproducibility of fluorescent expression from engineered biological constructs in E. coli

We present results of the first large-scale interlaboratory study carried out in synthetic biology, as part of the 2014 and 2015 International Genetically Engineered Machine (iGEM) competitions. Participants at 88 institutions around the world measured fluorescence from three engineered constitutive constructs in E. coli. Few participants were able to measure absolute fluorescence, so data was analyzed in terms of ratios. Precision was strongly related to fluorescent strength, ranging from 1.54-fold standard deviation for the ratio between strong promoters to 5.75-fold for the ratio between the strongest and weakest promoter, and while host strain did not affect expression ratios, choice of instrument did. This result shows that high quantitative precision and reproducibility of results is possible, while at the same time indicating areas needing improved laboratory practices.Peer reviewe