Results 91 to 100 of about 949,261 (229)
Circular-geometry oscillators [PDF]
, 2004 5.3GHz 0.18μm CMOS circular-geometry oscillator exploits high Q of slab inductors. The oscillator draws 10mA from 1.4V with a phase noise of -147.3dBc/Hz at 10MHz offset. A second 5.4GHz circular-geometry VCO has a tuning range of 8% with phase noise of -
Aparicio, R., Hajimiri, A.
core +1 more source
Progress in Photovoltaics: Research and Applications, EarlyView.This study introduces a self‐supervised machine learning approach integrating physics‐based principles to estimate open‐circuit voltage (voc$$ {v}_{oc} $$) degradation in photovoltaic systems using SCADA data. By combining clustering and regression algorithms, our method detects performance deviations without labelled datasets.
Sandra Riaño +4 more
wiley +1 more source
The Atmosphere Explorer power subsystem [PDF]
The design and operation of the power subsystem for the Atmospheric Explorer spacecraft are discussed. The additional functional redundancy which was added in several component areas to improve the overall subsystem reliability is analyzed.
Bacher, J., Callen, P., Obenschain, A.
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PM&R, EarlyView.Abstract Background Spinal cerebrospinal fluid (CSF) leaks, a rare but debilitating condition, have been described following spinal manipulative therapy (SMT) in case reports. However, the nature of the potential association between SMT and CSF leak is uncertain, and symptoms such as neck pain or headache may reflect preexisting leaks rather than ...
Robert J. Trager +4 more
wiley +1 more source
From HBV to MASLD Cirrhosis: Mechanistic Insights and Therapeutic Strategies
Portal Hypertension &Cirrhosis, EarlyView.This review examines the epidemiological shift from hepatitis B virus (HBV) to metabolic dysfunction‐associated steatotic liver disease (MASLD) as the leading cause of cirrhosis globally. It highlights the distinct pathogenic mechanisms between HBV and MASLD cirrhosis and discusses evolving diagnostic tools and therapeutic strategies tailored to the ...
Hanqi Yu +5 more
wiley +1 more source
Nuclear reactor power as applied to a space-based radar mission [PDF]
, 1988 The SP-100 Project was established to develop and demonstrate feasibility of a space reactor power system (SRPS) at power levels of 10's of kilowatts to a megawatt.
Beatty, R. +9 more
core +1 more source
Gene turnover in the common ancestor of all C4 grasses
PLANTS, PEOPLE, PLANET, EarlyView.Understanding how plants evolve more efficient photosynthesis is important in a warming world where improving crop productivity and resilience is a global priority. By generating the first reference genomes for an early‐diverging group of grasses called the Aristidoideae, we were able to reconstruct the genetic makeup of the last common ancestor of all
Lara Pereira +6 more
wiley +1 more source
Small Structures, Volume 6, Issue 5, May 2025.A novel spatial segregation strategy for silicon photoelectrodes is demonstrated, where catalyst wires surrounded by tapered microwires effectively decouple competing optical and catalytic requirements. This architectural innovation enables optimal light absorption and catalytic activity while maintaining efficient charge transport, achieving 96.5 ...
Soohyeok Park +9 more
wiley +1 more source
High Voltage, EarlyView.ABSTRACT This study explores the breakdown characteristics and discharge modes in a parallel plate air dielectric barrier discharge system using repetitive nanosecond pulses, with pulse repetition frequencies (PRFs) from 0.1 to 100 kHz. It examines how pulse parameters—PRF, pulse number and gas pressure—affect the memory effect, leveraging current and ...
Mahreen +3 more
wiley +1 more source
Pressure Pulses Generated by Wire‐Guided Discharges in Water
High Voltage, EarlyView.ABSTRACT The hydrodynamic characteristics of underwater wire‐guided discharges and their relationships with the wire length and pulsed circuit parameters are not fully understood. In this paper wire‐guided discharges using wires of length 3, 5 and 7 cm and diameter of 0.05 mm have been investigated. The energy available to the discharges was 162.3 J at
Yifan Chai +3 more
wiley +1 more source