Results 111 to 120 of about 202,425 (251)

Black shale deposition during the Early Jurassic: Geochemistry of Pliensbachian and Toarcian sedimentary rocks of the Hunzen Well, Hils Syncline, Northwest German Basin

open access: yesThe Depositional Record, EarlyView.
Our research uses a multidisciplinary approach, including organic and inorganic geochemistry, biostratigraphy, carbon isotope geochemistry and organic petrography to reconstruct depositional conditions and organic matter accumulation during the Pliensbachian and Toarcian.
Premila Wijesinghe   +7 more
wiley   +1 more source

Instability mechanism and failure characteristics of underground cavern in block system under the action of seismic waves

open access: yesDeep Underground Science and Engineering, EarlyView.
Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang   +4 more
wiley   +1 more source

A Woodpecker‐Inspired Self‐Excited Vibration Mechanism for Enhancing the Power of Triboelectric Nanogenerators

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A self‐excited vibration TENG inspired by woodpeckers is proposed. This structure converts gravitational potential energy into the continuous vibration of a cantilever beam. Its average power is 127% higher than that of the conventional cantilever beam mode.
Xie Xie   +4 more
wiley   +1 more source

Enhanced Piezoelectric Output and Electromechanical Response of ZnO Film Sensors via Orientation Induction and Rapid Deposition Strategies

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Employing an orientation induction and rapid deposition strategy, the oriented growth of ZnO piezoelectric films is effectively regulated, resulting in significantly enhanced piezoelectric polarization and electromechanical response. The ZnO OIL sensor exhibits excellent sensitivity, fast response, and high measurement accuracy in practical ...
Zhonghao Liu   +12 more
wiley   +1 more source

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