Results 31 to 40 of about 1,015,748 (173)
Chirp-compensated pulsed titanium-sapphire laser system for precision spectroscopy
, 2021 Active frequency-chirp compensation for a narrowband pulsed Titanium-Sapphire laser system is demonstrated using an intra-cavity electro-optic modulator resulting in improved spectral resolution and stability.
C. Cheng (820663) +3 more
core +1 more source
Advanced Materials, EarlyView.ABSTRACT The accelerating expansion of data‐centric technologies is sharply increasing the energy burden of information storage, placing unprecedented pressure on the efficiency of magnetic switching. Conventional field‐driven reversal, once the foundation of magnetic memory, has become impractical in modern architectures due to its high energy cost ...
Mohammad H. Badarneh +2 more
wiley +1 more source
Simulation of nonlinear systems subject to modulated chirp signals [PDF]
, 2015 Purpose The purpose of the paper is to apply a novel technique for the simulation of nonlinear systems subject to modulated chirp signals. Design/methodology/approach The simulation technique is first described and its salient features are presented.
Iserles, Arieh, Condon, Marissa
core +2 more sources
Advanced Science, EarlyView.The present study shows that Nrf2 directly binds to the Gm26550 promoter, thereby activating Gm26550 transcription and increasing its expression. Mechanistically, Gm26550 promotes IGF1 expression by functionally antagonizing miR‐26a‐5p‐mediated repression and sequestering the RBP KHSRP, thereby enhancing hippocampal neuronal synaptic plasticity and ...
Hongfang Wang +12 more
wiley +1 more source
Advanced Science, EarlyView.ESCC‐derived exosomal circAP2B1 promotes tumor progression by reprogramming mitochondrial metabolism via the ESRRA/KPNA1/MFN2 axis to induce M2 polarization of macrophages. ABSTRACT Esophageal squamous cell carcinoma (ESCC) remodels the immunosuppressive tumor microenvironment via exosome‐mediated intercellular communication.
Yiru Wang +5 more
wiley +1 more source
Orthogonal Chirp-Based Ultrasonic Positioning
Sensors, 2017 This paper presents a chirp based ultrasonic positioning system (UPS) using orthogonal chirp waveforms. In the proposed method, multiple transmitters can simultaneously transmit chirp signals, as a result, it can efficiently utilize the entire available ...
Mohammad Omar Khyam +3 more
doaj +1 more source
Advanced Science, EarlyView.The iLEAP technique integrates high‐throughput two‐photon lithography with extrusion printing, bridging sub‐micrometer precision and macroscopic scaffold fabrication. By employing a low‐exothermic photoinitiator, it mitigates thermal damage to biopolymers and preserves bioactivity.
Qifeng Guan +11 more
wiley +1 more source
Chirp Interference Mitigation in GNSS Systems Using Chirp Parameter Estimation and Pulse Blanking
IEEE AccessChirp interference is a major source of disturbance in Global Navigation Satellite System (GNSS) signal processing. Whether the chirp interference signal appears continuous or pulsed to a GNSS receiver depends on its bandwidth relative to the receiver ...
Nabil Jardak
doaj +1 more source
Calling, courtship, and condition in the fall field cricket, Gryllus pennsylvanicus. [PDF]
PLoS ONE, 2013 Theoretically, sexual signals should provide honest information about mating benefits and many sexually reproducing species use honest signals when signalling to potential mates. Male crickets produce two types of acoustic mating signals: a long-distance
Sarah J Harrison +3 more
doaj +1 more source
Advanced Science, EarlyView.A self‐powered vibration sensing platform integrates a quasi‐zero‐stiffness piezoelectric harvester, synchronized electric charge extraction, energy management, and wireless ADC acquisition. Ambient vibration is simultaneously harvested as energy and digitized as information, enabling sustained real‐time waveform monitoring without external power.
Yizhou Li +10 more
wiley +1 more source