Results 51 to 60 of about 1,179,738 (348)

Ti6Al4V‐Bioglass‐Copper Composites for Load‐Bearing Implants

open access: yesAdvanced Healthcare Materials, EarlyView.
We have designed and manufactured a novel Ti64‐based composite by adding 45S5 bioglass (BG) and copper (Cu). Adding BG on titanium improves wear resistance and biocompatibility, whereas Cu addition improves mechanical strength while providing inherent lifelong bacterial resistance.
Lochan Upadhayay   +3 more
wiley   +1 more source

Determining how atmospheric carbon dioxide concentrations have changed during the history of the Earth [PDF]

open access: yes, 2011
The reconstruction of ancient atmospheric carbon dioxide concentrations is essential to understanding the history of the Earth and life. It is also an important guide to identifying the sensitivity of the Earth system to this greenhouse gas and ...
Badger, Marcus P. S.   +2 more
core   +1 more source

Physical Intelligence in Small‐Scale Robots and Machines

open access: yesAdvanced Materials, EarlyView.
“Physical intelligence” (PI) empowers biological organisms and artificial machines, especially at the small scales, to perceive, adapt, and even reshape their complex, dynamic, and unstructured operation environments. This review summarizes recent milestones and future directions of PI in small‐scale robots and machines.
Huyue Chen, Metin Sitti
wiley   +1 more source

Timing the Mesolithic-Neolithic Transition in the Iberian Peninsula: The Radiocarbon Dataset

open access: yesJournal of Open Archaeology Data, 2019
In this paper, we describe the radiocarbon dataset compiled in the context of the project HAR2015-68962 EVOLPAST: 'Dinámicas evolutivas y patrones de variabilidad cultural de los últimos cazadores-recolectores y el primer Neolítico en el este peninsular (
Salvador Pardo-Gordó   +3 more
doaj   +1 more source

Ethnicity [PDF]

open access: yes, 2012
As developed in the fields of anthropology and sociology, the concept of ethnicity offers one possible approach to analyzing diversity in the population of ancient Egypt.
Baines, John, Riggs, Christina
core  

The African origins of Greek philosophy: Ancient Egypt in retrospect [PDF]

open access: yes, 2017
The demand of philosophizing in Africa has faced a history of criticism that has been particularly Eurocentric and strongly biased. However, that trend is changing with the emergence of core philosophical thinking in Africa.
Anakwue, Nicholas
core   +1 more source

Bacteria‐Responsive Nanostructured Drug Delivery Systems for Targeted Antimicrobial Therapy

open access: yesAdvanced Materials, EarlyView.
Bacteria‐responsive nanocarriers are designed to release antimicrobials only in the presence of infection‐specific cues. This selective activation ensures drug release precisely at the site of infection, avoiding premature or indiscriminate release, and enhancing efficacy.
Guillermo Landa   +3 more
wiley   +1 more source

Archeo‐Inspiration from the Cultural History of Glass: Historic Accounts, Anecdotes and Hard Facts as Challenges to Modern Material Science

open access: yesAdvanced Materials, EarlyView.
Glass, historically valued for its purity and durability, has long inspired artists and societies. This article introduces the concept of “Archeo‐Inspiration”, drawing on cultural and historical contexts of glass to guide future material innovations.
Eva von Contzen   +3 more
wiley   +1 more source

Close Companions? A Zooarchaeological Study of the Human–Cattle Relationship in Medieval England

open access: yesAnimals, 2021
Across medieval Europe, cattle commanded a major, if shifting, economic and social value, and their use for meat, milk, and traction is well established.
Matilda Holmes   +2 more
doaj   +1 more source

Microbial Contribution to Soiling and Its Impact on Photovoltaic Module Soiling in Arid Zones of the Atacama Desert

open access: yesAdvanced Sustainable Systems, EarlyView.
Microorganisms colonizing photovoltaic surfaces in the Atacama desert form biofilms that enhance particle adhesion and reduce energy yield. This study identifies UV‐resistant bacteria and carotenoid‐producing strains that interfere with PV performance.
Douglas Olivares   +8 more
wiley   +1 more source

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