Results 121 to 130 of about 5,909,290 (265)

Programa CAR - BID Distrito Sanitario Villapinzón - Chocontá

open access: yes, 1994
Anteriormente tomábamos muchos recursos, los usábamos dejándolos prácticamente inservibles olvidándonos de que como seres vivos dependemos del aire, del suelo y sus minerales y de todas las formas de vida, puesto que éstos y otros elementos constituyen ...
Corporación Autónoma Regional de Cundinamarca - CAR   +1 more
core  

Hydrogel‐Based 3D‐Printed Anthropomorphic Breast Phantom for Emulating Mechanical and Dielectric Properties of Mammary Tissue. Applications in Microwave Imaging

open access: yesAdvanced Functional Materials, EarlyView.
A 3D‐printable breast phantom is developed using patient‐derived MRI data and hydrogels that replicate the dielectric properties of healthy and cancerous tissues. Mechanical and dielectric characterization confirm its suitability for microwave imaging.
Carlos M. Andreu   +5 more
wiley   +1 more source

Evaluación general sobre visita al vivero Rancho Grande de Smurfit Cartón de Colombia

open access: yes, 2019
Por medio del memorando interno No. 151 del 23 de Noviembre del presente año, los abajo firmantes de este informe fuimos comisionados para practicar una visita técnica a los viveros y plantaciones de la Empresa SMURFIT - CARTÓN DE COLOMBIA, en el ...
Corporación Autónoma Regional de Cundinamarca – CAR
core  

Self‐Assembled Crystalline Peptoid Nanomaterials as Metal‐Free Enzyme Mimics for Enhanced Carbon Dioxide Hydration and Precipitation

open access: yesAdvanced Functional Materials, EarlyView.
Inspired by metal‐free carbonic anhydrases (CAs) that achieve efficient catalysis without metal cofactors, we herein report a sequence‐defined supramolecular peptoid platform that mimics metal‐free CAs and exhibits hydrolytic activity via a supramolecular assembly‐mediated proton‐transfer mechanism.
Progyateg Chakma   +8 more
wiley   +1 more source

A merging model for motorway traffic [PDF]

open access: yes, 2006
Motorway merging has long been regarded as a major source of conflicts and congestion on motorways. Traditional studies of merging behaviour are based on gap acceptance models developed mainly for urban intersections, which tend to oversimplify the very ...
Wang, Jiao
core   +1 more source

Guía para toma y preservación de muestras

open access: yes, 1985
Este documento es el primero de una serie de publicaciones con las cuales, la Subdirección Técnica se propone establecer Guías de Acción para el desarrollo de las actividades que dentro del sector de Control Ambiental competen a la Corporación Autónoma ...
Corporación Autónoma Regional de Cundinamarca – CAR
core  

Calibration and Validation of Microscopic Traffic Flow Models [PDF]

open access: yes, 2004
Microscopic simulation models are becoming increasingly important tools in modeling transport systems. There are a large number of available models used in many countries.
Brockfeld, Elmar   +2 more
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Halide Composition Controls Phase Morphology and Device Specific Performance in Perovskite Photovoltaics and Light Emitting Diodes

open access: yesAdvanced Functional Materials, EarlyView.
We demonstrate that halide composition determines phase morphology, governing distinct operating mechanisms in mixed halide perovskites. Phase segregating 75% Br compositions enhance solar cell performance, whereas intrinsically phase‐separated 95% Br compositions provide stable light emitting diodes.
Tal Binyamin   +6 more
wiley   +1 more source

Saneamiento integral de la cuenca del río Bogotá

open access: yes, 1998
En la fórmula de repartición del trabajo estriban en buena parte los problemas de nuestro país: no está adecuadamente distribuida; hay muchas personas tratando de hacer algo y muchas más tratando de que no se haga.
Corporación Autónoma Regional de Cundinamarca – CAR
core  

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