Results 81 to 90 of about 76,053 (332)

Understanding Crime in Colombia and What Can Be Done About It [PDF]

open access: yes
. We attempt to spell out the causes and costs of Colombia´s crime situation. Homicide rates are the highest in the world, three times higher than those of Brazil & Mexico and ten times higher than those of other Latin American countries.
Levitt Steven, Mauricio Rubio
core  

Spartan Daily, March 5, 1973 [PDF]

open access: yes, 1973
Volume 60, Issue 77https://scholarworks.sjsu.edu/spartandaily/5711/thumbnail ...
San Jose State University, School of Journalism and Mass Communications
core   +2 more sources

Laser Metal Powder Deposition of Titanium Microalloyed HSLA Steel FeC0.12Si0.25Mn1.3

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates the additive manufacturing of titanium‐doped high‐strength low‐alloy (HSLA) steel via laser metal deposition. It reveals distinct process‐structure relationships for elemental powder blends compared to prealloyed feedstocks.
Olaf Stelling   +2 more
wiley   +1 more source

Democracy and violence in Colombia during the Barco administration (1986-1990) [PDF]

open access: yes
With its longstanding democratic institutions and high levels of contemporary violence, Colombia represents an anomaly within Latin America. Using a contemporary historical approach, this article examines the administration of President Virgilio Barco ...
Benedict Hayes
core  

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz   +4 more
wiley   +1 more source

Reparations for Victims: Lessons from Colombia. [PDF]

open access: yesAEA Pap Proc, 2023
Guarin A, Londoño-Vélez J, Posso C.
europepmc   +1 more source

Estructura social en el movimiento político guerrillero de El Salvador : basado en el "Libro Amarillo". Documento del Ejército salvadoreño para identificar a sus enemigos [PDF]

open access: yes, 2015
Las guerrillas son fenómenos sociales y expresiones de nuestras sociedades que, de acuerdo a su composición social y humana, ofrecen dos perspectivas: a) una complejidad sociocultural y política interna que es muy difícil de analizar, dada la poca ...
Hernández, Adalberto Magdaleno   +2 more
core   +3 more sources

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Historia de la interacción político-militar entre guerrillas colombianas, 1964-2015

open access: yesAnuario Colombiano de Historia Social y de la Cultura, 2017
El conflicto armado colombiano contiene muchos más fenómenos que la sola confrontación entre la insurgencia y el Estado. Uno de ellos es la interacción de los diferentes grupos armados no estatales, que a veces coexisten en un mismo espacio ideológico o ...
Luis Miguel Buitrago Roa   +1 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

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