Results 151 to 160 of about 1,238,430 (361)

Accounting for Depletion of Oil and Gas Resources in Malaysia [PDF]

open access: yes
This paper provides an assessment of the changes in the availability of oil and gas resources in Malaysia. The physical and monetary balance sheets for crude oil and natural gas for the period 2000- 2007 was constructed. The net present value of expected
Jafari, Yaghoob, Othman, Jamal
core   +1 more source

Economic Evaluation of Wind Energy as an Alternative to Natural Gas Powered Irrigation [PDF]

open access: yes
High natural gas prices have agricultural producers searching for alternative energy sources for irrigation. The economic feasibility of electric and hybrid (electric/wind) systems are evaluated as alternatives to natural gas powered irrigation.
Amosson, Stephen H.   +3 more
core   +1 more source

Using option pricing theory to estimate option value - a preliminary study [PDF]

open access: yes, 1993
The purpose of this report is to compare and contrast two approaches to incorporating uncertainty when evaluating natural resource problems. The first approach incorporates option pricing theory which is derived from the financial economics literature ...
Longley Brett,   +2 more
core  

Multi‐Dimensional Nano‐Additives for Their Superlubricity: Tribological Behaviors and Lubrication Mechanisms

open access: yesAdvanced Materials Interfaces, EarlyView.
This paper systematically introduces the characteristics and functions of 0D‐3D nanomaterials in super‐lubrication, analyzes the lubrication mechanism of these nanomaterials, and prospects the energy‐saving and environmental benefits brought by their progress in this field.
Kang Yang   +7 more
wiley   +1 more source

Not long before the end? SF and the economics of resource scarcity

open access: yesFafnir, 2017
The commodity price booms of the early 1970s and of 2006–2014 were both associated with predictions of devastating scarcity of key natural resources, in popular media as well as in science fiction.
Jesper Stage
doaj  

Depreciation and Obsolescence in the Context of Natural Resource Accounting [PDF]

open access: yes
Conventional national accounting practice emphasises depreciation as both a physical loss in productive capital and an economic loss due to obsolescence.
Harris, Michael
core   +1 more source

Review of \u3ci\u3e Natural Resource and Environmental Economics\u3c/i\u3e by Tony Prato [PDF]

open access: yes, 1999
This upper-division or beginning graduate-level text addresses the economics of a broad range of natural resource and environmental issues in a style suitable for a wide range of students interested in natural resource policy.
Supalla, Raymond
core   +1 more source

Stress Response of Aspergillus niger Spores to Copper Surfaces and the Implications for Antifungal Surface Functionalization

open access: yesAdvanced Materials Interfaces, EarlyView.
This study investigates the antifungal efficacy of ultrashort pulsed laser‐induced periodic surface structures (USP‐DLIP) on copper, brass, and steel surfaces. Using Aspergillus niger as a model, the research highlights a 99% reduction in spore viability on 9 µm structured copper surfaces due to enhanced copper ion release. Scanning electron microscopy
Stella Marie Timofeev   +10 more
wiley   +1 more source

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