Results 121 to 130 of about 6,259 (275)

Advancing Sustainable Development Through Exports of Clean Energy Products From Emerging Asian Economies: A Poisson Pseudo Maximum Likelihood Estimation Approach

open access: yesSustainable Development, EarlyView.
ABSTRACT The promotion of clean energy is critical to achieving sustainable development. This study investigates the factors that affect the exports, trade potential, and revealed comparative advantage (RCA) of clean energy products (CEPs) in the emerging Asian economies (EAEs).
Arvind Goswami   +2 more
wiley   +1 more source

Study of a new airfoil used in reversible axial fans [PDF]

open access: yes
The characteristics of the reverse ventilation of axial flow are analyzed. An s shaped airfoil with a double circular arc was tested in a wind tunnel. The experimental results showed that the characteristics of this new airfoil in reverse ventilation are
Gu, Chuangang, Li, Chaojun, Wei, Baosuo
core   +1 more source

Resource reallocation across successive systemic innovations: How Rolls‐Royce shaped the evolution of the turbojet, turboprop, and turbofan

open access: yesStrategic Management Journal, EarlyView.
Abstract Research Summary Despite the importance of resource reallocation in shaping a variety of strategic outcomes, strategy scholars have paid only limited attention to the processes by which firms reallocate their resources across successive systemic innovations.
Gino Cattani   +2 more
wiley   +1 more source

Efficient Harvesting of Irregular and Low‐Frequency Mechanical Energy via Hybridized Electromagnetic‐Triboelectric Systems

open access: yesSmall, EarlyView.
ABSTRACT The rapid expansion of the Internet of Things (IoT) and wearable electronics necessitates sustainable power sources to replace the limited electrochemical battery. While mechanical energy harvesting offers a promising solution, traditional harvesters face challenges of irregular and low−frequency environmental sources. This review presents the
Yongbin Han   +2 more
wiley   +1 more source

Material technology [PDF]

open access: yes
Advanced high pressure O2/H2 propulsion systems as exemplified by the Space Shuttle Main Engine (SSME) create challenging operating environments for materials.
Dreshfield, R. L., Mcpherson, W. B.
core   +1 more source

Hydroacoustic Modeling of Rotor Stator Interaction in Francis Pump-Turbine [PDF]

open access: yes, 2007
A one-dimensional hydroacoustic model is set up to perform the numerical simulation of the rotor-stator interaction of a Francis pump-turbine scaled model.
AVELLAN, François   +2 more
core  

Renewable Energy‐Driven Green Electricity Supplement for Empowering Blue Economy

open access: yesSusMat, EarlyView.
In order to support the blue economy to expand to the distant sea, this work proposes the framework driven by renewable energy. It integrates flexible perovskite solar cells, triboelectric nanogenerator‐supercapacitors, grid‐forming control strategies, and AI‐driven digital engines.
Ruibo Fan   +5 more
wiley   +1 more source

Sargassum Lung Syndrome: Air Flow Obstruction and Bronchial Inflammation Are Observed After Prolonged Exposure to Sargassum Gas Emissions in the Eastern Caribbean

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Sargassum inundation of Caribbean and American shorelines is a growing environmental hazard. Hydrogen sulfide (H2S) and ammonia (NH3) produced by decomposing Sargassum could be involved in airway obstruction and bronchial inflammation. The study was undertaken to evaluate the effects of exposure to H2S and NH3 gases emitted during Sargassum ...
Rishika Banydeen   +9 more
wiley   +1 more source

Characteristics of reversible-pump turbines

open access: yes, 2012
The primary goal for this PhD project has been to investigate instability of reversiblepump turbines (RPTs) as a phenomenon and to find remedies to solve it. The instability occurs for turbines with s-shaped characteristics, unfavourable waterways and limited rotating inertia. It is only observed for certain operation points at either high speed or low
openaire   +1 more source

End Suction Centrifugal Pump Operating in Turbine Mode for Microhydro Applications

open access: yesAdvances in Mechanical Engineering, 2014
This paper reviews the current research works on the end suction centrifugal pump coupled with induction generator running in turbine mode for microhydro application. The information can be used by practicing engineers, researchers, and plant managers to
Mohd Azlan Ismail   +3 more
doaj   +1 more source

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