Results 41 to 50 of about 158,972 (310)

How big is the energy efficiency resource?

open access: yesEnvironmental Research Letters, 2018
Most economic theorists assume that energy efficiency—the biggest global provider of energy services—is a limited and dwindling resource whose price- and policy-driven adoption will inevitably deplete its potential and raise its cost.
Amory B Lovins
doaj   +1 more source

Fossil trees, tree moulds and tree casts in the Palaeocene Mull Lava Field, NW Scotland: context, formation and implications for lava emplacement [PDF]

open access: yes, 2016
Megafossils and macrofossils of terrestrial plants (trees, leaves, fruiting bodies, etc.) are found in sedimentary and pyroclastic units interbedded with lavas in many ancient lava fields worldwide, attesting to subaerial environments of eruption and the
Bell, Brian R., Williamson, Ian T.
core   +1 more source

Two Acheuleans, two humankinds. From 1.5 to 0.85 Ma at Melka Kunture (Upper Awash, Ethiopian highlands) [PDF]

open access: yes, 2017
The Acheulean is the longest-lasting human cultural record, spanning approximately 1.5 Ma and three continents. The most comprehensive sequences are found in East Africa, where, in large-scale syntheses, the Lower Pleistocene Acheulean (LPA) has often ...
Gallotti, Rosalia, Mussi, Margherita
core   +1 more source

Study on the Effect of Different Fe2O3/ZrO2 Ratio on the Properties of Silicate Glass Fibers

open access: yesAdvances in Materials Science and Engineering, 2017
A series of silicate glass fibers with different ratios of Fe2O3/ZrO2 were prepared, and their corrosion resistance, mass loss, and strength loss were characterized.
Jianxun Liu   +5 more
doaj   +1 more source

Too hot to handle: Assessing practitioner climate service needs to advance heat resilience

open access: yesClimate Services
Extreme heat is deadly and it is disproportionately experienced by lower-income, minority, and marginalized community members. Heat practitioners are faced with the dual challenges of taking action to mitigate the level of heat experienced by local ...
K.M. Archie   +6 more
doaj   +1 more source

Anti‐Slip Material‐Based Strategies and Approaches

open access: yesAdvanced Materials Technologies, EarlyView.
This review highlights the principle mechanisms of slipping at the microscale, linking contact mechanics with a friction behavior model for surface interfaces. Main strategies to develop anti‐slip properties to the surfaces are discussed alongside standardized testing approaches.
Sogand Abbaspoor‐Zanjani   +3 more
wiley   +1 more source

Archaeological Damage Assessment in Conflict Zones: Integrating Satellite Imagery and Ground Surveys in Daraa, Syria

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT Satellite remote sensing is among the most significant modern methodologies supporting field archaeology. In addition to its efficiency in identifying archaeological sites, remote sensing offers a safe and cost‐effective approach in conflict zones.
Amal Al Kassem   +5 more
wiley   +1 more source

Practitioners’ Needs for Addressing the Challenges of Sea‐Level Rise—A Qualitative Assessment

open access: yesEarth's Future
Practitioners at the local and regional scale are under increased pressure to reduce risks to people and property posed by the threats of sea‐level rise (SLR) and associated impacts.
D. Hirschfeld   +4 more
doaj   +1 more source

Experimental and Machine Learning-Based Investigation of Coarse Aggregate Characteristics Impact on Mechanical Properties of Concrete

open access: yesBuildings
This research investigates the impact of coarse aggregate (CA) type, shape, and specimen size on the compressive behavior of concrete, aiming to better understand how these factors affect its mechanical performance.
Muhammad Sufian   +6 more
doaj   +1 more source

Comprehensive view on the ductility of basalt fiber reinforced concrete focus on lightweight expanded clay

open access: yesStructural Mechanics of Engineering Constructions and Buildings, 2019
Relevance. Ductility of basalt fiber reinforced concrete is an interesting property of basalt fiber reinforced concrete. However, very few experiments on this property is documented. The aim of the work.
Vera V. Galishnikova   +2 more
doaj   +1 more source

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