Results 111 to 120 of about 1,253,627 (291)

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

Analysis of Rotor-Stator Interaction in Turbine Mode of a Pump-Turbine Model

open access: yesJournal of Applied Fluid Mechanics, 2016
The highest-level fluctuations in large pump-turbines are usually originated from rotor-stator interaction (RSI) in the vaneless region. Hence, the studies of RSI phenomenon and corresponding unsteady effects are significantly important to reduce the ...
D. Y. Li   +5 more
doaj  

Advanced expander test bed program [PDF]

open access: yes
The Advanced Expander Test Bed (AETB) is a key element in NASA's Chemical Transfer Propulsion Program for development and demonstration of expander cycle oxygen/hydrogen engine technology component technology for the next space engine.
Masters, A. I., Mitchell, J. C.
core   +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

Low-thrust chemical propulsion system pump technology [PDF]

open access: yes
Candidate pump and driver systems for low thrust cargo orbit transfer vehicle engines which deliver large space structures to geosynchronous equatorial orbit and beyond are evaluated.
Sabiers, R. L., Siebenhaar, A.
core   +1 more source

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

Supercharged topping rocket propellant feed system [PDF]

open access: yes, 1979
A rocket propellant feed system utilizing a bleed turbopump to supercharge a topping turbopump is presented. The bleed turbopump is of a low pressure type to meet the cavitation requirements imposed by the propellant storage tanks.
Ginsburg, A.   +2 more
core   +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

Prospects for Developing Compressed Air Energy Storage in Saudi Arabia

open access: yesIET Smart Energy Systems, EarlyView.
Under Saudi Arabia's Vision 2030, this paper analyses the supporting role of Compressed Air Energy Storage in high‐penetration renewable energy systems and, in light of the local geological resources and grid conditions, demonstrates its feasibility for deployment and future development prospects.
Mingzhong Wan   +6 more
wiley   +1 more source

Introduction: Towards a linguistic anthropology of AI Introduction : vers une anthropologie linguistique de l'IA

open access: yesJournal of the Royal Anthropological Institute, EarlyView.
This essay introduces the themed cluster of articles, ‘Towards a linguistic anthropology of AI’. The advent of artificial intelligence (AI), especially in large language models capable of producing coherent discourse mimicking conversational interaction, is exerting unprecedented pressure on prevailing concepts of language, personhood, and the human ...
Webb Keane, Constantine V. Nakassis
wiley   +1 more source

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