Results 81 to 90 of about 916,843 (300)
Numerical Simulation of Vortex-induced Vibrations and Fatigue Life Factor Analysis of Marine Riser
Shiyou jixie, 2016 As it is difficult to implement 3D numerical simulation of VIV of marine risers due to its high cost and low calculating efficient,an equivalent 2D model based on spring-mass model is proposed to solve the vibration parameters (amplitude and frequency ...
Wang Lin +4 more
doaj
Feasibility study on manganese nodules recovery in the Clarion-Clipperton Zone
, 2012 The sea occupies three quarters of the area on the earth and provides various kinds of resources to mankind in the form of minerals, food, medicines and even energy.
Agarwal, Baivau +4 more
core
The global warming hiatus: Slowdown or redistribution? [PDF]
, 2016 Global mean surface temperatures (GMST) exhibited a smaller rate of warming during 1998-2013, compared to the warming in the latter half of the 20th Century.
Boyer, Tim +8 more
core +2 more sources
Corals and Reef‐Dwelling Fish Regulate Carbon Storage and Cycling Processes in Coral Reef Ecosystems
Advanced Science, EarlyView.Coral reefs are biodiversity hotspots, yet their role in carbon storage and cycling remains poorly understood. Using field surveys and modeling in the South China Sea, we reveal the overlooked potential of carbon storage in reef ecosystems and how reef fish, corals, and surface sediment jointly shape reef carbon reservoirs.
Yiting Chen +8 more
wiley +1 more source
Numerical simulation on the vortex-induced vibration characteristics of staggered marine riser
You-qi chuyun, 2020 In order to master the vortex-induced vibration laws of marine riser system, the generalized α method was developed to solve the cylinder vibration equation, and the stability of the solution method was enhanced.
Zehua YE +5 more
doaj +1 more source
Modeling and supervisory control design for a combined cycle power plant [PDF]
, 2012 The traditional control strategy based on PID controllers may be unsatisfactory when dealing with processes with large time delay and constraints. This paper presents a supervisory model based constrained predictive controller (MPC) for a combined cycle ...
Abokhatwa, Salah, Katebi, Reza
core
Drag Coefficients of a Long Flexible Circular Cylinder with Wake Interference [PDF]
, 2009 Drag coefficients of the downstream cylinder in a tandem arrangement of two models aligned with the flow are shown in this work. The models, which experienced vortex-induced vibrations with wake interference, had an external diameter of 16 mm and a ...
Huera-Huarte, Francisco J.
core +1 more source
Advanced Science, EarlyView.Photocatalytic treatment of glyphosate herbicide in agricultural wastewater is achieved through the cooperative effect of the local polarization field and dipole field mediated by lattice‐distorted carbon nitride. Glyphosate is completely degraded via selective C─P bond cleavage with a CO evolution rate of 1166 µmol g−1 h−1.
Daoping Chen +7 more
wiley +1 more source
International Journal of Coastal and Offshore Engineering, 2017 Many procedures suggest for reduction of responses of riser to Vortex Induced Vibrations (VIV). Natural frequencies of marine risers is an important parameter that can affect the responses of riser to VIV.
Younes Komachi +2 more
doaj
The RISeR cores: unexpected and extensive Middle Pleistocene terrestrial stratigraphy in the southern North Sea [PDF]
Scientific DrillingThe Rates of Interglacial Sea-level Change and Responses (RISeR) project, funded by the European Research Council, seeks to interrogate Earth system responses to Quaternary climate variability using sedimentary archives preserved in the southern North ...
A. M. McGuire +8 more
doaj +1 more source