BIOTECNOLOGÍA

MANUAL PARA PRÁCTICAS DE LABORATORIO, TALLER U OTRA ÁREA DE APOYO A LA DOCENCI

PROPAGACIÓN DE ESPECIES ORNAMENTALES

MANUAL PARA PRÁCTICAS DE LABORATORIO, TALLER U OTRA ÁREA DE APOYO A LA DOCENCI

Investigations of the Formation of Carbon Grains in Circumstellar Outflows

The study of formation and destruction processes of cosmic dust is essential to understand and to quantify the budget of extraterrestrial organic molecules. Although dust with all its components plays an important role in the evolution of interstellar chemistry and in the formation of organic molecules, little is known on the formation and destruction processes of carbonaceous dust. PAHs are important chemical building blocks of interstellar dust. They are detected in interplanetary dust particles and in meteoritic samples. Additionally, observational, laboratory, and theoretical studies have shown that PAHs, in their neutral and ionized forms, are an important, ubiquitous component of the interstellar medium. Also, the formation of PAHs from smaller molecules has not been extensively studied. Therefore, it is imperative that laboratory experiments be conducted to study the dynamic processes of carbon grain formation from PAH precursors. Studies of interstellar dust analogs formed from a variety of PAH and hydrocarbon precursors as well as species that include the atoms O, N, and S, have recently been performed in our laboratory under conditions that simulate interstellar and circumstellar environments. The species formed in the pulsed discharge nozzle (PDN) plasma source are detected and characterized with a high-sensitivity cavity ringdown spectrometer (CRDS) coupled to a Reflectron time-of-flight mass spectrometer (ReTOF-MS), thus providing both spectroscopic and ion mass information in-situ. We report the first set of measurements obtained in these experiments and identify the species present in the experiments and the ions that are formed in the plasma process. From these unique measurements, we derive information on the size and the structure of interstellar dust grain particles, the growth and the destruction processes of interstellar dust and the resulting budget of extraterrestrial organic molecules

Semi-autonomous Robotic Disassembly Enhanced by Mixed Reality

In this study, we introduce "SARDiM," a modular semi-autonomous platform enhanced with mixed reality for industrial disassembly tasks. Through a case study focused on EV battery disassembly, SARDiM integrates Mixed Reality, object segmentation, teleoperation, force feedback, and variable autonomy. Utilising the ROS, Unity, and MATLAB platforms, alongside a joint impedance controller, SARDiM facilitates teleoperated disassembly. The approach combines FastSAM for real-time object segmentation, generating data which is subsequently processed through a cluster analysis algorithm to determine the centroid and orientation of the components, categorizing them by size and disassembly priority. This data guides the MoveIt platform in trajectory planning for the Franka Robot arm. SARDiM provides the capability to switch between two teleoperation modes: manual and semi-autonomous with variable autonomy. Each was evaluated using four different Interface Methods (IM): direct view, monitor feed, mixed reality with monitor feed, and point cloud mixed reality. Evaluations across the eight IMs demonstrated a 40.61% decrease in joint limit violations using Mode 2. Moreover, Mode 2-IM4 outperformed Mode 1-IM1 by achieving a 2.33%-time reduction while considerably increasing safety, making it optimal for operating in hazardous environments at a safe distance, with the same ease of use as teleoperation with a direct view of the environment

Valoración del dictamen pericial en sentencias de responsabilidad médica, proferidas por magistrados del Tribunal Superior de Barranquilla - Sala Civil durante los años 2006 al 2010

Este trabajo de investigación tuvo como propósito aportar un material de conocimiento a la comunidad jurídica, acerca de la valoración del dictamen pericial que hacen los Magistrados del Tribunal Superior de Barranquilla - Sala Civil en los procesos de responsabilidad médica, y como se debería hacer para lograr una efectiva administración de justicia, en este tipo de procesos, cuyo objeto fundamental es de carácter especializado, técnico - científico, distinto a la mera discusión de un derecho, que no se podría decidir sin el concepto de un experto en la materia

MICROPROPAGACIÓN VEGETAL

MANUAL PARA PRÁCTICAS DE LABORATORIO, TALLER U OTRA ÁREA DE APOYO A LA DOCENCI

INTRODUCCION

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SUSTRATOS

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TRANSPIRACION

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