Results 51 to 60 of about 59,315,148 (263)
European Journal of Organic Chemistry, EarlyView.A tandem reaction of 5‐aroylpyrazolo[3,4‐b]pyridines with malononitrile and methanol to access pyrazolo[3,4‐h][1,6]naphthyridines was achieved in 60%–66% yield under microwave conditions. The tricyclic fluorophoric core bears groups of different stereoelectronic nature (i.e., alkyl, aryl, MeO, and CN), and thus their optoelectronic activity shows ...
Carlos Cifuentes +3 more
wiley +1 more source
Criminología ambiental y homicidio en la ciudad de Bogotá (Colombia)
Revista de Estudios Sociales, 2018 To determine the spatial-environmental characteristics of the districts which reported the largest number of homicides in Bogotá during the second semester of 2011, we undertook a descriptive-observational study within the framework of environmental ...
Ervyn Norza Céspedes +4 more
doaj +1 more source
Remote Sensing and Machine Learning Modeling to Support the Identification of Sugarcane Crops
IEEE Access, 2022 One of the main concerns of agricultural financing institutions is to make sure the loans they grant are used for the stated objective when the loan was requested.
Carlos Lozano-Garzon +12 more
doaj +1 more source
Características oclusales de los niños de 5 años del municipio de andes (Antioquia, Colombia)
CES Odontología, 2016 Introduction: The occlusal alterations are a frequent problem in the primary dentition, their identification from early age, allow to recognize variations in the normal characteristics, which can influence the development of permanent occlusion. Objective: to establish the occlusal characteristics in primary dentition, in children 5-year-old of ...
Escobar-Paucar, Gloria +3 more
openaire +4 more sources
From Physiology to Bioheat Simulation: A Data‐Driven Framework for Core Temperature Initialization
Heat Transfer, EarlyView.ABSTRACT Accurate initialization of core body temperature is a critical yet often overlooked component of bioheat transfer models, particularly when such models are applied to heterogeneous populations and real‐world environmental conditions. Conventional bioheat simulations typically rely on fixed or idealized core body temperature values derived from
David S. Rodríguez +6 more
wiley +1 more source
Journal of Plant Nutrition and Soil Science, EarlyView.ABSTRACT Background Soil fertility management in mango and banana production systems in northern Peru is limited by marked spatial heterogeneity, driven by chemical imbalances, particularly salinity, alkalinity, and sodicity. Aim This study developed a spatial predictive framework to assess soil quality across the agricultural area of Morropón Province,
Sebastian Casas‐Niño +4 more
wiley +1 more source
Revista Mexicana de Biodiversidad, 2009 El género Stenocercus está compuesto por 61 especies que se distribuyen principalmente en los Andes y tierras bajas aledañas (0-4 000 m), desde el norte de Colombia y Venezuela hasta el centro de Argentina.
Omar Torres-Carvajal
doaj
Materialidades espectrales: resistencias sensibles a la desaparición forzada en Colombia
Razón Crítica, 2020 En Colombia, la desaparición ha inscrito una violencia capaz de atacar no solo la vida, sino la existencia. Instaurando una lógica de terror fantástico, el lugar de las víctimas se desploma hacia un vacío de sentido que quiebra lo sensible y lo decible ...
Juan Ángel Agudelo Hernández +2 more
doaj +1 more source
La evolución estructural de los andes más septentrionales de Colombia
Boletín Geológico, 1971 El Escudo Guayanés primario, al norte de Suramérica, es más antiguo que el metamorfismo del complejo eugeosinclinal· de Imataca al sudeste de Venezuela el cual tuvo lugar hace 3000 millones de años. El metamorfismo y por lo menos dos ciclos magmáticos graníticos (Guyanense) unieron el área del Escudo en un cratón estable entre 1850 y 2250 millones de ...
openaire +2 more sources
Gravity Studies at Cerro Machín Volcano, Colombia
Boletín Geológico, 2022 A gravimetric study was performed at the Cerro Machin volcano (4° 29’ N, 75° 22’ W), Tolima Department, Colombia, to obtain a density distribution of the volcanic edifice and its basement. This study was divided into three main sections.
Nicolás Felipe Pedraza +3 more
doaj +1 more source