Results 81 to 90 of about 459,740 (195)

Social, Technological, Economic, and Policy Factors in the Circular Economy Transition in Brazil

open access: yesSustainable Development, EarlyView.
ABSTRACT A well‐functioning circular economy (CE) integrates resilience across economic, environmental, and social dimensions. This study identifies key drivers and barriers to Brazil's CE transition through 20 semi‐structured interviews with stakeholders. Major sociocultural barriers include inadequate education and limited CE awareness, while growing
Alejandro Gallego‐Schmid   +9 more
wiley   +1 more source

Influencia de la microestructura en el comportamiento frente a la corrosión microbiana de los aceros inoxidables

open access: yesRevista de Metalurgia, 2000
Se han utilizado aceros inoxidables de los tipos UNS S30300, S30400, S30403, S31600, S31603 y S42000, en diferentes estados microestructurales, para estudiar la influencia de los tratamientos térmicos sobre la corrosión microbiana.
Diego Alejandro Moreno   +2 more
doaj   +1 more source

La fatiga en las barras de acero corrugado para refuerzo de hormigón [PDF]

open access: yes, 2003
Para conseguir aprovechar los recursos que la sociedad invierte en infraestructuras de manera óptima es imprescindible, para la ingeniería civil, un buen conocimiento de los materiales y de sus propiedades.
Avila Kildal, Francisco
core  

The First Archaeomagnetic Age at Tiwanaku and Implications for Dating Andean Metallurgical Furnaces

open access: yesArchaeometry, EarlyView.
ABSTRACT This paper presents the first archaeomagnetic dating at Tiwanaku (Andean Altiplano). We compared the geomagnetic field values recorded by a metallurgical furnace against an updated SHAWQ2k‐SH global model and a regional intensity curve, both of which include, for the first time, high‐quality intensity data from the Southern Hemisphere. Results
Judit del Río   +6 more
wiley   +1 more source

Influencia de distintos medios agresivos en la acción protectora de las pinturas ricas en zinc

open access: yesRevista de Metalurgia, 1999
En este trabajo se pretende determinar la influencia de distintos agentes corrosivos atmosféricos en la protección anticorrosiva que ejercen las pinturas ricas en zinc de base silicato inorgánico.
C. M. Abreu   +4 more
doaj   +1 more source

Metabolismo urbano de Tandil - Uso en la gestión de los RSU [PDF]

open access: yes, 2016
Objetivos del trabajo: - Describir los circuitos formal e informal de los flujos de materiales que se utilizan en Tandil, en particular de los recicla bles - Identificar mejoras posibles del sistema de gestión de los RSU - Explorar oportunidades de ...
Villalba, Luciano
core   +1 more source

Enhancing the Ethical Culture of Organizations: A Longitudinal Study Using a Comprehensive Ethics Training

open access: yesBusiness Ethics, the Environment &Responsibility, EarlyView.
ABSTRACT A supportive ethical culture (EC) can encourage moral behavior among employees and help them avoid wrongdoing. One option for fostering EC is ethics training; its longer‐term effectiveness, however, has rarely been examined, especially in countries lacking strong regulatory environments.
Pablo Ruiz‐Palomino   +3 more
wiley   +1 more source

Obtención de materiales con comportamiento tixotrópico mediante "compocasting"

open access: yesRevista de Metalurgia, 2005
El comportamiento tixotrópico de un material está asociado a la coexistencia de fases líquida y sólida en las proporciones adecuadas para que la mezcla no se desmorone.
S. Alcántara   +3 more
doaj   +1 more source

Diseño de aislante térmico no convencional para vivienda [PDF]

open access: yes, 2016
Se identificó un potencial nicho de mercado a nivel local: aislantes térmicos para vivienda, mediante el desarrollo de materiales no tradicionales.
Canetti, Rocío Belén
core  

Droughts and human impact in the ancient Uaymil region of the Maya lowlands inferred from a 2800‐year sedimentary archive at Lake Kaná, Mexico

open access: yesBoreas, EarlyView.
The relationship between the climate and societal transformation in Maya lowlands has long been debated, particularly the role of drought in shaping the civilization trajectory during the Classic Period. A high‐resolution, multi‐proxy, geochemical record from Lake Kaná, located in the underexplored Uaymil region of the Yucatán Peninsula in Mexico ...
Haydar B. Martinez‐Dyrzo   +5 more
wiley   +1 more source

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