Results 61 to 70 of about 1,357 (297)
MachinesThe swing of the riser in deep-water drilling can significantly impact the drill string. In this study, we establish a riser model that considers the combined disturbance of periodic dynamic wind and wave loads. By coupling it with the drill string model,
Weiguo Hai, Yingming He, Qilong Xue
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Main physical properties of the drilling riser model.
, 2014 Main physical properties of the drilling riser model.
Zhou Shouwei (614808) +2 more
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Advanced Materials, EarlyView.Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano +18 more
wiley +1 more source
Risk Assessment of Riser Operations on DP Drilling Units
, 2010 Risk of riser operations on dynamic positioning mobile offshore drilling units is addressed in this paper. Primary focus is placed on the blowout risk caused by failure of Emergency Quick Disconnection in the situation of DP failure, i.e.
Xiao Liu, Bjo̸rn Abrahamsen
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Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics
Advanced Materials, EarlyView.The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades +7 more
wiley +1 more source
Analysis of Mechanical Behavior of Deepwater Drilling Riser
Shiyou jixie, 2018 The riser is the key equipment for deepwater drilling. A great deal of theoretical researches and finite element analyses have been carried out on riser,but mainly focused on the mechanical analysis and natural frequency analysis of top tension and ...
Gan Wuxiang, Zhao Honglin, Duan Menglan
doaj
High Charge Carrier Mobility in Non‐Conjugated 3D Covalent Organic Frameworks
Advanced Materials, EarlyView.A non‐conjugated 3D COF constructed via boronate ester linkages from tetraphenylene and pyrene‐based monomers is reported, which exhibits a high charge carrier mobility of 14 ± 1 cm2 V−1 s−1. ABSTRACT π‐Conjugation, π–π stacking, and long‐range order play a central role in determining charge transport efficiency in organic materials.
Joaquín Almarza +11 more
wiley +1 more source
Analysis of Fatigue Monitoring of Deepwater Drilling Riser
Shiyou jixie, 2017 The riser is the key equipment for deepwater drilling, which is prone to fatigue damage in harsh deepwater environment, so it is very important to monitor the fatigue of deepwater riser.
Li Qingpei +5 more
doaj
, 2011 Regulatory changes in recent years have shown more stringent drilling riser inspection and maintenance criteria with the objective of minimizing Health, Safety and Environmental (HSE) risks, as evident with the December 2009 draft MMS NTL on integrity ...
Meghan Eileen Hull +4 more
core +1 more source
Advanced Materials, EarlyView.Residual magnetization induces pronounced mechanical anisotropy in ultra‐soft magnetorheological elastomers, shaping deformation and actuation even without external magnetic fields. This study introduces a computational‐experimental framework integrating magneto‐mechanical coupling into topology optimization for designing soft magnetic actuators with ...
Carlos Perez‐Garcia +3 more
wiley +1 more source