Results 121 to 130 of about 1,544,131 (358)

Microstructural Evolution and Mechanical Performance of Plasma‐Assisted Hybrid Friction Stir Welded Dissimilar Aluminum–Copper Joints

open access: yesAdvanced Engineering Materials, EarlyView.
Plasma‐assisted hybrid friction stir welding of dissimilar AlCu joints employs localized plasma preheating to balance heat input and enhance plastic flow. The optimized process reduces axial force by up to 35%, refines the microstructure, and achieves ≈96% joint efficiency.
Deepak Kumar Yaduwanshi   +3 more
wiley   +1 more source

Theological education with the help of technology

open access: yesHTS Teologiese Studies/Theological Studies, 2014
Theology seemingly does not have a major impact on society anymore. However, Christianity did not only change and form the western world over the past 2000 thousand years, it still has a substantial role to play in society. This could be done through the
Erna Oliver
doaj   +1 more source

[Review of] Sterling Plumpp, ed. Somehow We Survive: An Anthology of South African Writing [PDF]

open access: yes, 1989
Somehow We Survive takes its title from an included poem by Dennis Brutus and is a collection of poems written in English by non-white South Africans.
Bruner, David K.
core   +1 more source

A Termite‐Inspired Alternative to Cement

open access: yesAdvanced Functional Materials, EarlyView.
A termite‐inspired composite of clay, cellulose, and lignin forms a dense fibrous network with concrete‐like strength (32 MPa) and superior elasticity, processed at ambient temperature. Abstract Clay combined with organic materials is used by termites as a strong and durable construction material for their mounds with minimal environmental impact. Here,
Oren Regev   +3 more
wiley   +1 more source

From altar to action: Customising the pneumatological imagination to sustainable development

open access: yesVerbum et Ecclesia
Pentecostal ecotheology has been explored as the theology that can go beyond the anthropocentric focus of salvation towards the salvation of the non-human.
Mookgo S. Kgatle, Joshua Chigorimbo
doaj   +1 more source

Martian canyons and African rifts: Structural comparisons and implications [PDF]

open access: yes
The resistant parts of the canyon walls of the Martian rift complex Valled Marineris were used to infer an earlier, less eroded reconstruction of the major roughs. The individual canyons were then compared with individual rifts of East Africa.
Frey, H. V.
core   +1 more source

A Scalable, Durable, Fire‐Safe All‐Day Passive Radiative Cooling Coating for Sustainable Buildings

open access: yesAdvanced Functional Materials, EarlyView.
This study reports a scalable, durable coating that combines a fire‑retardant copolymer adhesive, hollow glass microspheres, and boron oxide to achieve passive radiative cooling with over 94% solar reflectance and >95% mid‑infrared emissivity. The coating maintains performance after UV and rain exposure and exhibits UL‑94 V‑0 fire resistance, enabling ...
Zhewen Ma   +8 more
wiley   +1 more source

Urbanization and health in Africa : exploring the interconnections between poverty, inequality and the burden of disease [PDF]

open access: yes, 2005
There are few changes in the history of human existence comparable to urbanization in scope and potential to bring about biologic change. The transition in the developed world from an agricultural to an industrial-urban society has already produced ...
Songsore, Jacob
core  

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