Yahua Shi

A Constant On-Time Buck Converter with VCO-based DC Offset Calibration Technique

Bingxue Zhang, SuJuan Liu, Kun Liu, Xinyu Zhang et autres

The constant on-time (COT) buck converters have the advantage of simple control mechanism, excellent load transient response, and high efficiency, making them well-suited to meet the power requirements of modern electronic devices. However, the COT control mode has inherent limitations in output …

cn (code pays fourni par la source)

Adaptive on-time Control Buck Converter Based on Phase-Locked-loop and Dynamic Calibration of DC Offset

Xinyu Zhang, SuJuan Liu, Kun Liu, Bingxue Zhang et autres

Constant on-time (COT) control is widely adopted in BUCK converters owing to its advantages of fast transient response and high light-load efficiency. However, the inherent principle of conventional COT control leads to limitations, including low output voltage regulation accuracy and significant switching …

cn (code pays fourni par la source)

109. Satellite remote sensing for forage mass estimations in cereal rye for Nebraska grazing systems

Paulo M. Fernandes, Shelby L Davies-Jenkins, Ban Zhao, Mary E Drewnoski et autres

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94 Characterizing Yearling Beef Steers Grazing on Smooth Bromegrass Pasture Using Global Positioning Technology

Holly A Heil, Baoliang Zhao, Braden Troyer, Rebecca L Sjostrand et autres

Abstract Extensive grazing systems often vary in pasture size and terrain, making it challenging for ranchers to accurately locate livestock through visual appraisal. Using satellite-based global positioning systems (GPS), accurate position data can be provided to track animal movements that could inform …

us (code pays fourni par la source)

Effects of Land Use Type on the Profile Distributions of Soil Amorphous Iron and Total Phosphorus

G. Y., X. Chen, Yahua Shi

Using Selenium-, Phosphorus-, or Sulfur-Containing Oxidants

D. Goeddel, Yahua Shi

The formation of the active phases in sulfided NiW/Al2O3 catalysts and their evolution during post-reduction treatment

Donghua Zuo, Michel L. Vrinat, Hong Nie, Françoise Maugé et autres

fr, cn (code pays fourni par la source)

Formation of ternary Ag/Au/S clusters and sulfur-plus-gold sensitization in photographic process

WD Cui, Xiang Zhao, Bo-Shun Peng, Yahua Shi et autres

Ag/Au/S ternary clusters were generated by laser ablation on Ag/Au/S mixtures and detected with a time-of-flight(TOF) mass spectrometer. The results show that Ag/S binary clusters, Au/S binary clusters, and Ag/Au/S ternary clusters were produced simultaneously and that the main cluster series include …