Results 91 to 100 of about 41,416 (285)
Systems of reciprocity in human–ocean relationships: Across time, place, language and culture
People and Nature, EarlyView.Abstract In the face of large‐scale marine environmental challenges, solutions that meaningfully capture the complexity of socio‐cultural and economic factors contributing to such issues—and their solutions—are urgently needed. This scoping review explores examples of reciprocity in human–ocean relationships to inform the conceptual underpinning and ...
Kianna M. Gallagher +3 more
wiley +1 more source
Influence of the Radial Gap on the External Gear Pump Performance
Applied SciencesThe paper presents a numerical and experimental study of the radial gap influence on the external gear pump performance. The numerical study is performed with a two-dimensional (2D) computational fluid dynamics (CFD) model developed and advanced in ...
Alexander Mitov +2 more
doaj +1 more source
Nihon Kikai Gakkai ronbunshu, 2015 Windage loss may become more than 10% of all losses when large sized gearing runs fast. In order to reduce the windage loss, it needs to vacuum a gear box because it is proportional to the density of ambient air. The study proposes a helical gearing unit
Shigeki MATSUMURA +4 more
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Acoustical characterization of external gear pumps: comparison of spur and helical gears
, 2023 The evaluation of the noise performance of hydraulic pumps is a key aspect for manufacturers as the pump often represents one of the main noise sources in hydraulic systems on end users applications. Although sound power tests are the most accurate measurement method for the acoustical characterization of a source, study relies on a more practical and ...
Pietro Mazzei +5 more
openaire +3 more sources
Actuation Strategies for Underwater Jet‐Propelled Soft Robots
Journal of Field Robotics, EarlyView.ABSTRACT This review article examines jet‐propulsion mechanisms in underwater soft robotic systems, focusing exclusively on physically fabricated and experimentally validated robots. Covering research published from 2013 to 2025, this study classifies and evaluates jet‐propulsion robots based on their actuation mechanisms.
Angel Kitone +3 more
wiley +1 more source
Theoretical Investigation into the Ripple Source of External Gear Pumps
Energies, 2019 External gear pumps are among the most popular fluid power positive displacement pumps, however they often suffer of excessive flow pulsation transmitted to the downstream circuit.
Xinran Zhao, Andrea Vacca
doaj +1 more source
Sustainable 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
Models for Flow Rate Simulation in Gear Pumps: A Review
Energies, 2017 Gear pumps represent the majority of the fixed displacement machines used for flow generation in fluid power systems. In this context, the paper presents a review of the different methodologies used in the last years for the simulation of the flow rates ...
Massimo Rundo
doaj +1 more source
Key Technical Fields and Future Outlooks of Space Manipulators: A Survey
SmartBot, EarlyView.This paper systematically reviews the technological development of space manipulators, emphasizing the unique challenges posed by space environments. It examines four areas: structural design, modeling, planning, and control, while introducing typical ground test platforms.
Gang Chen +12 more
wiley +1 more source
Jixie chuandong, 2020 To derive a unified calculation model for gear cross-section area suitable for arbitrary tooth profile. Firstly， based on the external conjugate relation between two identical gear， it is analyzed that cross-section area of gear is composed of pitch ...
Yulong Li +3 more
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