Results 61 to 70 of about 3,672,063 (202)

Composite Bandgap Metamaterial Pipelines Under Fluid Loading: Synergistic Local Resonance and Bragg Scattering for Broadband Vibration Control

open access: yesShock and Vibration
This study proposes a composite bandgap metamaterial pipeline (CBMP) integrating local resonance and Bragg scattering mechanisms for simultaneous vibration and noise suppression in fluid-conveying systems. Through the transfer matrix method (TMM), finite
Shaojie Guo, Kaixiang Li, Xiaochuan Liu
doaj   +1 more source

A Review of integrity constraint maintenance and view updating techniques [PDF]

open access: yes, 2003
Two interrelated problems may arise when updating a database. On one hand, when an update is applied to the database, integrity constraints may become violated.
Mayol Sarroca, Enric   +1 more
core   +1 more source

Sensitivity Analysis of Selected Random Variables of Existing Offshore Jacket Structures in Persian Gulf

open access: yesInternational Journal of Coastal and Offshore Engineering, 2017
Structural integrity evaluation of an existing offshore platform typically is based on a combination of non-linear structural analysis together with risk and reliability analysis. Quantitative assessment of the probability of failure of a jacket platform
Mostafa Zeinoddini   +4 more
doaj  

Influence of Loading Rate on the Hydrogen-Assisted Micro-Damage in Bluntly Notched Samples of Pearlitic Steel

open access: yesMetals, 2016
The influence of loading rate (crosshead speed) on the fracture process of bluntly notched samples of pearlitic steel under hydrogen environment is analyzed in this paper.
Jesús Toribio   +2 more
doaj   +1 more source

Signal Integrity and Power Integrity [PDF]

open access: yesIEEE Electromagnetic Compatibility Magazine, 2020
The COVID-19 pandemic has brought many changes. Among them, virtual conferences may become a new norm, or at least an important element for future technical symposia. Although we miss the opportunities to socialize with our colleagues and discuss issues face-to-face, virtual conferences can present different, yet still enjoyable, experiences and allow ...
openaire   +1 more source

Study on the Residual Strength of Nonlinear Fatigue-Damaged Pipeline Structures

open access: yesApplied Sciences
The heat alternation and bending during the service process of the pipeline structure are the key issues affecting its residual strength. The nonuniform plastic deformation of its cross-section causes nonlinear damage to the structure, which makes it ...
Wenlan Wei   +5 more
doaj   +1 more source

Time-lapse crystallography snapshots of a double-strand break repair polymerase in action

open access: yesNature Communications, 2017
DNA polymerase (pol) μ functions in DNA double-strand break repair. Here the authors use time-lapse X-ray crystallography to capture the states of pol µ during the conversion from pre-catalytic to product complex and observe a third transiently bound ...
Joonas A. Jamsen   +8 more
doaj   +1 more source

Adaptive Integration and Improper Integrals [PDF]

open access: yesMathematics of Computation, 1975
Let R be the class of all functions that are properly Riemann-integrable on [0, 1], and let IR be the class of all functions that are properly Riemann-integrable on [a, 1] for all a > 0 a > 0 and for which \[ lim a →
openaire   +1 more source

Academic Dishonesty: Recommendations for the Future of Higher Education [PDF]

open access: yes, 2018
The culture of academic dishonesty has become a common practice among students across numerous college campuses. It is imperative to address the policies designed to clearly define plagiarism and academic integrity, as they are not universally understood.
Adams, Connor   +2 more
core   +1 more source

A comparative study of several enhanced energy operators for vibration exciter bearing fault diagnosis

open access: yesScientific Reports
Rolling bearings of the vibration exciter are prone to failure due to long-term high amplitude alternating impact loads, causing economic losses and threatening production safety.
Yan Wang   +5 more
doaj   +1 more source

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