Results 131 to 140 of about 146,439 (338)

Subterranean Mine Inspection Using the Prometheus Re‐Configurable Drone

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT This paper describes the design, development, and real‐world testing of an autonomous drone for subterranean exploration, known as “Prometheus.” Driven by requirements from industry that the drone be able to be deployed through areas of restricted access, Prometheus was designed to be directly deployed through a 150 mm aperture.
Liam Brown   +8 more
wiley   +1 more source

Energetics of the Citric Acid Cycle in the Deep Biosphere

open access: yesGeophysical Monograph Series, Page 303-327., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Peter A. Canovas III, Everett L. Shock
wiley  

+1 more source

3-Space In-Flow Theory of Gravity: Boreholes, Blackholes and the Fine Structure Constant [PDF]

open access: yes, 2005
A theory of 3-space explains the phenomenon of gravity as arising from the time-dependence and inhomogeneity of the differential flow of this 3-space.
Cahill, Reginald T.
core   +3 more sources

Thermal Response Measurement and Performance Evaluation of Borehole Heat Exchangers: A Case Study in Kazakhstan [PDF]

open access: gold, 2022
Tangnur Amanzholov   +9 more
openalex   +1 more source

The Hidden Costs of Coffee Production in the Eastern African Value Chains

open access: yesSustainable Development, EarlyView.
ABSTRACT There is increasing recognition that significant hidden costs associated with agrifood systems are not reflected in market prices. Coffee is among the three most traded agricultural commodities in the world and supports the livelihoods of more than 30 million smallholder households.
Annet Adong   +3 more
wiley   +1 more source

Experiences with performing a thermal response test in boreholes for heat pumps [PDF]

open access: yesActa Montanistica Slovaca, 2006
This paper presents a Thermal Response Test (TRT) performed in two testing boreholes for heat pumps in the Czech Republic. The TRT is a special in-situ technique used abroad for the determination of key parameters needed for the proper borehole design ...
Jiří Ryška
doaj  

Society beyond morality: mimesis, sovereignty, and being not‐human in the Nyau associations of Malawi La société par‐delà la moralité : mimèse, souveraineté et existence non humaine dans les sociétés Nyau du Malawi

open access: yesJournal of the Royal Anthropological Institute, EarlyView.
Nyau masked dancers embodying a variety of people, animals, and objects appear at many public events in Chewa areas of Malawi. Understood to be the physical manifestation of ancestral spirits, these entities are classified as ‘not human’ and transgress ordinary morality, mocking and threatening audiences.
Sam Farrell
wiley   +1 more source

Structural heterogeneity and permeability in faulted eolian sandstone: Implications for subsurface modeling of faults [PDF]

open access: yes, 2002
We determined the structure and permeability variations of a 4 km-long normal fault by integrating surface mapping with data from five boreholes drilled through the fault (borehole to tens of meters scale).
Evans, J.P.   +4 more
core  

SUBSTITUTING FOR THE STATE: The Sovereignty Impacts of Diverse Citizens’ Off‐grid Infrastructure Strategies in South Africa

open access: yesInternational Journal of Urban and Regional Research, EarlyView.
Abstract In South Africa, citizens in both low‐ and high‐income areas are increasingly providing their own services to mitigate the unreliability, unaffordability and inaccessibility of state services. This article examines diverse case studies across socio‐economic and residential typologies to explore shifts in service provision responsibilities from
Fiona Anciano   +3 more
wiley   +1 more source

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