La interacción inter-generacional : Un escenario de ampliación de capacidades

Tesis (Maestría en Estudios y Gestión del Desarrollo).-- Universidad de La Salle. Maestría en Estudios y Gestión del Desarrollo, 2014

Prácticas organizativas de los vendedores informales de Bogotá en la localidad de Teusaquillo: análisis desde las capacidades y calidad de vida

Tesis (Maestría en Estudios y Gestión del Desarrollo).-- Universidad de La Salle. Maestría en Estudios y Gestión del Desarrollo, 2014

Mujer, conflicto y territorio: mujeres víctimas de desplazamiento frente a la restitución de tierras en el Meta

Tesis (Maestría en Estudios y Gestión del Desarrollo).-- Universidad de La Salle. Maestría en Estudios y Gestión del Desarrollo, 2014

Implementación de una oficina de cooperación y gestión de proyectos en la estructura administrativa de la alcaldía de Santiago de Cali

Tesis (Maestría en Estudios y Gestión del Desarrollo).-- Universidad de La Salle. Maestría en Estudios y Gestión del Desarrollo, 2014

Determinación de factores de emisión para pm10 proveniente de construcción de vías, edificaciones y canteras en Bogotá

Bogotá (Colombia) : Universidad de La Salle. Facultad de Ingeniería. Programa de Ingeniería Ambiental y Sanitaria

Análisis de la política nacional de reintegración en Bucaramanga

Bogotá (Colombia): Universidad de La Salle, Facultad de Ciencias Económicas y Sociales. Maestría en Estudios y Gestión del Desarrollo

CATARINA 2012-Leg 1 - CTD-O2 Data report

The CATARINA Leg1 cruise was carried out from June 22 to July 24 2012 on board the B/O Sarmiento de Gamboa, under the scientific supervision of Aida Rios (CSIC-IIM). It included the occurrence of the OVIDE hydrological section that was performed in June 2002, 2004, 2006, 2008 and 2010, as part of the CLIVAR program (name A25) ), and under the supervision of Herlé Mercier (CNRSLPO). This section begins near Lisbon (Portugal), runs through the West European Basin and the Iceland Basin, crosses the Reykjanes Ridge (300 miles north of Charlie-Gibbs Fracture Zone, and ends at Cape Hoppe (southeast tip of Greenland). The objective of this repeated hydrological section is to monitor the variability of water mass properties and main current transports in the basin, complementing the international observation array relevant for climate studies. In addition, the Labrador Sea was partly sampled (stations 101-108) between Greenland and Newfoundland, but heavy weather conditions prevented the achievement of the section south of 53°40’N. The quality of CTD data is essential to reach the first objective of the CATARINA project, i.e. to quantify the Meridional Overturning Circulation and water mass ventilation changes and their effect on the changes in the anthropogenic carbon ocean uptake and storage capacity. The CATARINA project was mainly funded by the Spanish Ministry of Sciences and Innovation and co-funded by the Fondo Europeo de Desarrollo Regional. The hydrological OVIDE section includes 95 surface-bottom stations from coast to coast, collecting profiles of temperature, salinity, oxygen and currents, spaced by 2 to 25 Nm depending on the steepness of the topography. The position of the stations closely follows that of OVIDE 2002. In addition, 8 stations were carried out in the Labrador Sea. From the 24 bottles closed at various depth at each stations, samples of sea water are used for salinity and oxygen calibration, and for measurements of biogeochemical components that are not reported here. The data were acquired with a Seabird CTD (SBE911+) and an SBE43 for the dissolved oxygen, belonging to the Spanish UTM group. The software SBE data processing was used after decoding and cleaning the raw data. Then, the LPO matlab toolbox was used to calibrate and bin the data as it was done for the previous OVIDE cruises, using on the one hand pre and post-cruise calibration results for the pressure and temperature sensors (done at Ifremer) and on the other hand the water samples of the 24 bottles of the rosette at each station for the salinity and dissolved oxygen data. A final accuracy of 0.002°C, 0.002 psu and 0.04 ml/l (2.3 umol/kg) was obtained on final profiles of temperature, salinity and dissolved oxygen, compatible with international requirements issued from the WOCE program.

La formación del contador público en la generación y la gestión de la información. Investigación contable

Este es un libro temático, con trabajos de las diferentes líneas de investigación contable y formación del contador, con la siguiente estructura: En el primer capítulo se presenta la base teórica del XBRL (eXtensible Busines Reporting Language) y el alcance de su aplicación. En el segundo capítulo, se presenta un análisis comparativo del tratamiento contable dado a los impuestos diferidos en una norma nacional y dos normas internacionales. En el tercer capítulo, se discute la responsabilidad social del contador público y la gestión del conocimiento, en torno a la generación de información contable y a la gestión de la misma; allí se establecen una serie de pautas a seguir desde el punto de vista normativo. Seguidamente en el capítulo cuarto se presenta una metodología de diagnóstico y unas estrategias para la gestión del Accountability (rendición de cuentas). El capítulo cinco se trata de una aproximación conceptual a la información contable que necesitan las pymes con transacciones internacionales. El capítulo 6 se refiere a la formación del contador público y sus competencias en la educación superior. Hacía el capítulo siete se hace uso de foros académicos como estrategia de formación en investigación para los estudiantes de contaduría pública. El capítulo nueve es una propuesta de incorporación del capital intelectual a los modelos de valoración de empresas, a partir de los modelos tradicionales de valoración y de los modelos desarrollados más recientemente. Finalmente, para el capítulo diez se presenta un análisis crítico de las estrategias de desarrollo empresarial en Colombia, donde se evidencia que las políticas públicas han concertado los beneficios en unas élites fáciles de identificar.

El barrio ha muerto... ¡viva el barrio! : Medellín está en cuidados intensivos, habla Carlos Julio Calle : nos descubrieron 4

Fondo Margaritainés Restrepo

Consecuencias del crecimiento demográfico sobre la calidad de la vida en la ciudad de Bogotá, periodo 1985-2015

Bogotá (Colombia): Universidad de La Salle. Facultad de Ciencias Económicas y Sociales. Programa de Economía

Copper Nanoparticles in Click Chemistry

Conspectus: The challenges of the 21st century demand scientific and technological achievements that must be developed under sustainable and environmentally benign practices. In this vein, click chemistry and green chemistry walk hand in hand on a pathway of rigorous principles that help to safeguard the health of our planet against negligent and uncontrolled production. Copper-catalyzed azide–alkyne cycloaddition (CuAAC), the paradigm of a click reaction, is one of the most reliable and widespread synthetic transformations in organic chemistry, with multidisciplinary applications. Nanocatalysis is a green chemistry tool that can increase the inherent effectiveness of CuAAC because of the enhanced catalytic activity of nanostructured metals and their plausible reutilization capability as heterogeneous catalysts. This Account describes our contribution to click chemistry using unsupported and supported copper nanoparticles (CuNPs) as catalysts prepared by chemical reduction. Cu(0)NPs (3.0 ± 1.5 nm) in tetrahydrofuran were found to catalyze the reaction of terminal alkynes and organic azides in the presence of triethylamine at rates comparable to those achieved under microwave heating (10–30 min in most cases). Unfortunately, the CuNPs underwent dissolution under the reaction conditions and consequently could not be recovered. Compelling experimental evidence on the in situ generation of highly reactive copper(I) chloride and the participation of copper(I) acetylides was provided. The supported CuNPs were found to be more robust and efficient catalyst than the unsupported counterpart in the following terms: (a) the multicomponent variant of CuAAC could be applied; (b) the metal loading could be substantially decreased; (c) reactions could be conducted in neat water; and (d) the catalyst could be recovered easily and reutilized. In particular, the catalyst composed of oxidized CuNPs (Cu2O/CuO, 6.0 ± 2.0 nm) supported on carbon (CuNPs/C) was shown to be highly versatile and very effective in the multicomponent and regioselective synthesis of 1,4-disubstituted 1,2,3-triazoles in water from organic halides as azido precursors; magnetically recoverable CuNPs (3.0 ± 0.8 nm) supported on MagSilica could be alternatively used for the same purpose under similar conditions. Incorporation of an aromatic substituent at the 1-position of the triazole could be accomplished using the same CuNPs/C catalytic system starting from aryldiazonium salts or anilines as azido precursors. CuNPs/C in water also catalyzed the regioselective double-click synthesis of β-hydroxy-1,2,3-triazoles from epoxides. Furthermore, alkenes could be also used as azido precursors through a one-pot CuNPs/C-catalyzed azidosulfenylation–CuAAC sequential protocol, providing β-methylsulfanyl-1,2,3-triazoles in a stereo- and regioselective manner. In all types of reaction studied, CuNPs/C exhibited better behavior than some commercial copper catalysts with regard to the metal loading, reaction time, yield, and recyclability. Therefore, the results of this study also highlight the utility of nanosized copper in click chemistry compared with bulk copper sources.

Removal of paracetamol on biomass-derived activated carbon: Modeling the fixed bed breakthrough curves using batch adsorption experiments

The remediation of paracetamol (PA), an emerging contaminant frequently found in wastewater treatment plants, has been studied in the low concentration range (0.3–10 mg L−1) using as adsorbent a biomass-derived activated carbon. PA uptake of up to 100 mg g−1 over the activated carbon has been obtained, with the adsorption isotherms being fairly explained by the Langmuir model. The application of Reichemberg and the Vermeulen equations to the batch kinetics experiments allowed estimating homogeneous and heterogeneous diffusion coefficients, reflecting the dependence of diffusion with the surface coverage of PA. A series of rapid small-scale column tests were carried out to determine the breakthrough curves under different operational conditions (temperature, PA concentration, flow rate, bed length). The suitability of the proposed adsorbent for the remediation of PA in fixed-bed adsorption was proven by the high PA adsorption capacity along with the fast adsorption and the reduced height of the mass transfer zone of the columns. We have demonstrated that, thanks to the use of the heterogeneous diffusion coefficient, the proposed mathematical approach for the numerical solution to the mass balance of the column provides a reliable description of the breakthrough profiles and the design parameters, being much more accurate than models based in the classical linear driving force.

Remote Substituent Effects on the Stereoselectivity and Organocatalytic Activity of Densely Substituted Unnatural Proline Esters in Aldol Reactions

The organocatalytic activities of highly substituted proline esters obtained through asymmetric [3+2] cycloadditions of azomethine ylides derived from glycine iminoesters have been analyzed by 19F NMR and through kinetic isotope effects. Kinetic rate constants have been determined for unnatural proline esters incorporating different substituents. It has been found that exo-L and endo-L unnatural proline methyl esters yield opposite enantiomers in aldol reactions between cyclic ketones and aromatic aldehydes. The combined results reported in this study show subtle and remote effects that determine the organocatalytic behavior of these synthetic but readily available amino acid derivatives. These data can be used as design criteria for the development of new pyrrolidine-based organocatalysts.

Inversión pública en infraestructura núcleo y su efecto en el crecimiento económico en Bogotá: 2000- 2014 (Crowding In)

Bogotá (Colombia): Universidad de La Salle. Facultad de Ciencias Económicas y Sociales. Programa de Economía

Evolución de los indicadores de gestión y financieros de las empresas recolectoras de residuos sólidos domiciliarios en Bogotá

Bogotá (Colombia): Universidad de La Salle. Facultad de Ciencias Económicas y Sociales. Programa de Economía