Résultats de la recherche - Li-jun WANG
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Effects of variety and chemical regulators on cold tolerance during maize germination
Publié 2018-12-01Accéder au texte intégralMaize growth and development is affected by low temperature (LT) especially at the early stages of development. To describe the response of different varieties to LT stress and determine an effective method to cope with LT stress, maize hybrids Zhengdan 958 (ZD 958) and Danyu 39 (DY 39) were planted...
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Impact of Diquat on the Intestinal Health and the Composition and Function of the Gut Microbiome
Publié 2025-06-01Accéder au texte intégralDiquat (DQ) is extensively utilized as a herbicide in farming, and its intake can result in serious systemic toxicity due to its induction of oxidative stress (OS) and disruption of intestinal homeostasis. The gastrointestinal tract is one of the first systems exposed to DQ, and damage to this syste...
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Optimization of Ultrasonic-Assisted Extraction Process of Polysaccharides from American Ginseng and Evaluation of Its Immunostimulating Activity
Publié 2014-12-01Accéder au texte intégralUltrasonic-assisted extraction (UAE) of American ginseng polysaccharides (AGP) was investigated using response surface methodology. Three-factor-three-level Box-Behnken design was employed to optimize the ultrasonic power, extraction time and ratio of water to raw material to obtain a high AGP yield...
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Design and Analysis of a Novel Graphene-Assisted Silica/Polymer Hybrid Waveguide With Thermal–Optical Phase Modulation Structure
Publié 2019-01-01Accéder au texte intégralA novel thermal–optical phase modulation structure based on polymer/silica hybrid waveguide is proposed. Patterned graphene strip is introduced as electric nanoheater in the structure. Finite element method simulation is performed on both thermal and optical field analysis. Res...
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High Power (>27 W) Semiconductor Disk Laser Based on Pre-Metalized Diamond Heat-Spreader
Publié 2019-01-01Accéder au texte intégralHigh power semiconductor disk lasers (SDLs) were demonstrated based on the thermal management using pre-metalized diamond heat-spreader. The processing of pre-metallization using Cu-Sn alloy was developed. The resultant and influence of pre-metallization on the thermal performance of SDLs were inves...
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Narrow-Strip Single-Longitudinal-Mode Laser Based on Periodic Anodes Defined by i-Line Lithography
Publié 2018-01-01Accéder au texte intégralA low-cost regrowth-free narrow-strip single-longitudinal-mode diode laser, based on periodic anodes defined only by i-line lithography is proposed. With the periodic anodes separated by surface insulated grooves acting as a 44th-order gain grating, a high gain contrast is achieved without introduci...
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Two-Segment Gain-Coupled Distributed Feedback Laser
Publié 2018-01-01Accéder au texte intégralA two-segment regrowth-free gain-coupled distributed feedback (DFB) laser monolithically integrated different gain contrast segments was proposed, realizing both wavelength-tunable (5 nm) and wavelength stabilization characteristics, controlled by a single electrode only. At current larger than 320...
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Development of an automatic monitoring system for rice light-trap pests based on machine vision
Publié 2020-10-01Accéder au texte intégralMonitoring pest populations in paddy fields is important to effectively implement integrated pest management. Light traps are widely used to monitor field pests all over the world. Most conventional light traps still involve manual identification of target pests from lots of trapped insects, which i...
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Antidepressant Effects of Ginsenosides from Panax notoginseng
Publié 2012-03-01Accéder au texte intégralGinsenosides Rg1, Rb1, R1, Rd, and Re are major constituents of Panax notoginseng, a famous traditional Chinese medicinal herb, which has both stimulative and inhibitory effects on the central nervous system (CNS). The monoamine hypothesis proposes that depression is a result of the depletion of 5-h...
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990 nm High-Power High-Beam-Quality DFB Laser With Narrow Linewidth Controlled by Gain-Coupled Effect
Publié 2019-01-01Accéder au texte intégralHigh-power single-longitudinal-mode regrowth-free gain-coupled distributed feedback laser diode based on ridge waveguide with periodic current injection is achieved at 990 nm. Our device is fabricated only by standard i-line lithography with micron-scale precision, obtains an excellent performance a...
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