Results 71 to 80 of about 208,746 (285)
Advanced Science, EarlyView.Main Raman signals in RNA, related to helical backbone, ribofuranose ring, and nitrogenous bases, are affected by secondary structures that cause hyperchromic effects and significantly alter the Raman intensity. ABSTRACT Raman spectra of RNA nucleotide strands extracted from 20 SARS‐CoV‐2 strains, including the original Japanese isolate, Alpha, Beta ...
Giuseppe Pezzotti +11 more
wiley +1 more source
Dilatant-Fluid Torsional Vibration Damper for a Four-Stroke Diesel Engine Crankshaft
Polish Maritime Research, 2023 This paper presents a study of a viscous torsional vibration damper for a crankshaft of a four-stroke diesel engine. The reliable operation of a widely used silicone-type viscous damper depends on the ability of the silicone oil to absorb the energy of ...
Kozytskyi Sergiy, Kiriian Sergii
doaj +1 more source
Shear‐Mode Direct Piezoelectric Response of Ferroelectric Nematic Liquid Crystals
Advanced Science, EarlyView.Periodic shear‐induced electric current measurements are reported on two archetypic ferroelectric nematic liquid crystal compounds. From the temperature, frequency and shear angle dependent results of the first and second harmonic current signals together with temperature and oscillatory rheology measurements, the effective piezoelectric coupling ...
Péter Salamon +4 more
wiley +1 more source
Applied SciencesTwin-box girders are a good option for long-span cable-bearing bridges due to their excellent stability. Nonetheless, the girder’s slots may generate vortex-induced vibrations (VIVs). Fortunately, appropriate aerodynamic measures can effectively suppress
Hanxin He, Jiaying Wang, Feng Wang
doaj +1 more source
Advanced Science, EarlyView.A conductive TPU/liquid‐metal nanofibrous film is fabricated via ultrasonic dispersion, electrospinning, and mold imprinting. The film is breathable, stretchable, deformation‐stable, and provides electromagnetic shielding. n‐Butanol encapsulation mitigates liquid‐metal surface tension and improves biocompatibility. Stable ECG, EOG, EEG, and EMG signals
Cong Huang +7 more
wiley +1 more source
Ferroionic Electrostatic Landscapes Enabling Wireless Energy Harvesting, Storage, and Sensing
Advanced Electronic Materials, EarlyView.By integrating experiments and electrostatic field simulations, we show that long‐range wireless coupling in Li‐based ferroionics devices emerges from the cooperative interaction between ionic migration and electronic polarization. This coupling sustains self‐polarized electrostatic fields across centimeter‐scale air gaps without external bias or ...
M. Helena Braga +7 more
wiley +1 more source
Mathematical Model of the Torsional System of a 4-Cylinder 4ChN 11.0/12.5 Engine
Механика машин, механизмов и материаловTorsional vibrations have a significant impact on engine operation, leading to deterioration in performance or even complete failure. The development of new engines and the modernization of existing ones necessitate the ability to assess and predict the ...
Alexander A. Nikishev +1 more
doaj +1 more source
On a global classical solution of a quasilinear hyperbolic equation
International Journal of Mathematics and Mathematical Sciences, 1989 In this paper we establish the existence and uniqueness of global classical solutions for the equation which arises in the study of the extensional vibrations of thin rod, or torsional vibrations of thin rod.
Y. Ebihara, D. C. Pereira
doaj +1 more source
The Nonlinear Vibration Absorber for Mitigating Torsional Vibrations
From causing mild inconveniences to catastrophic failures, vibration affects all structural and mechanical components. The situation becomes especially critical when the structure is subjected to an exciting force that induces resonance. Industry trends towards lightweight construction compounds this issue by lowering the resonance frequency .
Venugopal, Harikrishnan +2 more
openaire +1 more source
Advanced Electronic Materials, EarlyView.Composite‐based flexible electronics integrate biodegradable polymers, conductive networks, and multilayer device architectures to balance electrical performance, mechanical durability, and controlled degradation. Interfacial engineering and encapsulation regulate transport stability and operational lifetime, while programmed disassembly enables ...
Sayam, Sangho Cho
wiley +1 more source