Results 121 to 130 of about 33,131 (313)

Quantifying Subsurface Weak in‐Plane Magnetization of Mixed Phase BiFeO3 by Scanning Nitrogen Vacancy Magnetometry

open access: yesAdvanced Functional Materials, EarlyView.
We use scanning nitrogen vacancy magnetometry to directly image the weak in‐plane magnetic moments in mixed phase BiFeO3 at the nanoscale and quantify the local magnetic moments to be 18.8±2.0 μB/nm2 in the rhombohedral‐like phase and 1.5±0.6 μB/nm2 in the well‐known non‐magnetic tetragonal‐like phase.
Lei Wang   +14 more
wiley   +1 more source

Experimental investigation of the flow-induced vibration of a curved circular cylinder

open access: yes, 2012
Experiments have been conducted to investigate the vortex-induced vibration (VIV) response of a rigid section of a curved circular cylinder. Two curved configurations, a concave and a convex, were tested regarding the direction of the flow, in addition ...
Srinil, Narakorn   +3 more
core  

Couplings in parametrically excited inclined cables systems [PDF]

open access: yes, 2008
Cables in stayed bridges are subjected to important dynamic solicitations for which dynamic model are now well established. Due to their design, such structures highlight resonance phenomena and instabilities frequently observed.
Michon, Guilhem   +2 more
core  

Perception of vibration and occupant comfort in wind-excited tall buildings

open access: yes, 2009
Wind-induced building vibration can interfere with building occupants' daily activities and general well-being. However, human perception of vibration and tolerance of wind-induced tall building vibration are essentially a subjective assessment.
Kwok, Kenny C. S.   +2 more
core   +1 more source

Vacuum Formed Spherical Triboelectric Architecture Overcoming Direction Constraints for 3D‐Omnidirectional Ultrasonic Energy Receiving

open access: yesAdvanced Functional Materials, EarlyView.
First vacuum formed spherical triboelectric converter for 3D‐omnidirectional ultrasonic energy receiving, with configurable DC or pulse outputs for versatile applications. ABSTRACT Ultrasound‐driven triboelectric nanogenerators (UD‐TENGs) have emerged as promising ultrasonic energy converters for underwater and biomedical applications.
Yanqin Huang   +12 more
wiley   +1 more source

Advancements in vibration-based energy harvesting systems for bridges: A literature and systematic review

open access: yesResults in Engineering
Energy harvesting is crucial for sustainable power generation within structural health monitoring systems for infrastructures, as it involves converting ambient energy sources into usable power, reducing reliance on fossil fuels, and minimizing ...
Amin Moslemi   +3 more
doaj   +1 more source

Self‐Adaptive Anhydrous Passivation Mitigates Open‐Circuit Voltage Loss in Pb‐Sn Mixed Perovskite Solar Cells

open access: yesAdvanced Functional Materials, EarlyView.
In this report, a self‐adaptive anhydrous passivation strategy is introduced by incorporating trimellitic anhydride (TMAH) into the perovskite precursor. In situ hydrolysis of TMAH yields trimellitic acid (TMA); ‐C═O/‐COO− groups of TMAH/TMA form a chelate with undercoordinated Pb2+/Sn2+, regulate nucleation, promote (100) orientation, passivate ...
Md. Ataur Rahman   +6 more
wiley   +1 more source

Wind power in the UK : a guide to the key issues surrounding onshore wind power development in the UK

open access: yes, 2012
This report is summarised in the Welsh language in 'Ynni gwynt : ateb eich cwestiynau'.This report is summarised in 'Wind power : your questions answered'.This report aims to help policy-makers and planners balance genuine local concerns with wider ...
Sustainable Development Commission
core  

Long‐Range Coordination Environment Modulates Single‐Atom Local States and Systemic Impact on CO2 Photoconversion

open access: yesAdvanced Functional Materials, EarlyView.
Terminal groups on Cu porphyrins modulate the electronic states of single‐atom Cu centers through a long‐range electronic effect, without altering the Cu coordination geometry. Meanwhile, a multi‐descriptor framework is established that incorporates porphyrin regulation, hybrid catalyst properties, and CO2 photoreduction capabilities.
Yi Zhang   +13 more
wiley   +1 more source

Dynamic analysis of road vehicle-bridge systems under turbulent wind by means of Finite Element Models

open access: yes, 2011
When an automobile passes over a bridge dynamic effects are produced in vehicle and structure. In addition, the bridge itself moves when exposed to the wind inducing dynamic effects on the vehicle that have to be considered.
Goicolea Ruigómez, José María   +3 more
core  

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