Results 81 to 90 of about 134,556 (266)

Integrating sciences to sustain urban ecosystem services [PDF]

open access: yes, 2011
Effective water management within urban settings requires robust multidisciplinary understanding and an appreciation of the value added to urban spaces by providing multifunctional green-blue spaces.
Lundy, Lian, Wade, Rebecca
core   +3 more sources

A review on rockburst prediction and prevention to shape an ontology‐based framework for better decision‐making for underground excavations

open access: yesDeep Underground Science and Engineering, EarlyView.
A scientometric analysis of 2449 journal articles and a comprehensive review of 336 papers were conducted, discussing and identifying challenges and research gaps in rockburst prediction and prevention and proposing an ontology‐based framework for better decision‐making in underground excavations. Abstract With underground engineering projects becoming
Hongchuan Yan   +6 more
wiley   +1 more source

Evaluation of hydropower upgrade projects - a real options approach [PDF]

open access: yes
When evaluating whether to refurbish existing hydropower plants or invest in a new power plant, there are two important aspects to take into consideration. These are the capacity chosen for the production facilities and the timing of the investment. This
Elverhøi, Morten   +5 more
core   +1 more source

Critical expansion points: Mechanical signs of surrounding rock instability

open access: yesDeep Underground Science and Engineering, EarlyView.
This study proposes the Rock Bearing‐Expansion Model (RockBEM) with critical expansion points (CEPs) to quantify post‐peak damage stages in deep‐buried rock masses via plane strain compression test (PSCT). CEP hysteresis&interval ratios reveal bearing performance dynamics and failure severity, advancing mechanistic insights into deep underground rock ...
Jiaqi Wen   +4 more
wiley   +1 more source

Coordination of Hydropower Generation and Export Considering River Flow Evolution Process of Cascade Hydropower Systems

open access: yesEnergies
Focusing the over simplification of existing models in simulating river flow evolution process and lack of coordination of hydropower generation and export, this paper proposes a hydropower generation and export coordinated optimal operation model that ...
Pai Li, Hui Lu, Lu Nan, Jiayi Liu
doaj   +1 more source

Deregulation of the Swiss Electricity Industry: Implication for the Hydropower Sector [PDF]

open access: yes
Although Switzerland is not a EU-member country, in December 1999 the Swiss Parliament adopted the new Swiss Electricity Market Law (EML). The EML laid the foundations for reforming the Swiss electricity industry by moving from regulation to deregulation.
Cornelia Luchsinger   +2 more
core  

Deploy diverse renewables to save tropical rivers. [PDF]

open access: yes, 2019
A strategic mix of solar, wind and storage technologies around river basins would be safer and cheaper than building large dams, argue Rafael J. P.
Kammen, Daniel M   +3 more
core  

Association of American Geographers Annual Meeting [PDF]

open access: yes, 2019
Conference Report on the Association of American Geographers Annual ...
Beazley, Robert E.
core   +3 more sources

Modeling and experimental validation of bolt–grout bond–slip behavior for deep underground excavation support

open access: yesDeep Underground Science and Engineering, EarlyView.
A novel shear‐lag model, validated by pull‐out tests, incorporates a constant bond stress stage to predict the complete load–displacement response of grouted rock bolts, providing a new tool for optimizing anchorage length and material toughness in deep underground engineering. Abstract The stability of rock masses in deep underground excavations, such
Wenhui Bian   +6 more
wiley   +1 more source

Dynamic simulation and assessment of the ecological benefits of hydropower as an alternative energy for thermal power under ecological civilization construction: A case study of Fujian, China

open access: yesEnergy Science & Engineering, 2020
As ecological civilization construction receives growing attention in China, the eco‐friendliness of the power supply structure is becoming increasingly important. Thermal power and hydropower are the two major power sources in China. Hydropower has both
Lihui Zhang   +3 more
doaj   +1 more source

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