Search Results - YAN Yan

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  1. 1

    Research on nonlinear dynamics of giant magnetostrictive actuators under delayed feedback control by YAN Yan, GAO Daxiao

    Published 2025-07-01

    ObjectiveIn response to the bifurcation and chaos phenomena in the dynamics of giant magnetostrictive actuator (GMA), which reduce the output stability of the system, a velocity delay feedback controller was designed to suppress the main resonance bifurcation and chaotic motion of the GMA system.Met...

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    Effects of foliar spraying uniconazole on growth and nitrogen metabolism of relay strip intercropping soybean under different nitrogen levels by WAN Yan, YAN Yan-hong, YANG Wen-yu

    Published 2012-03-01

    Effect of foliar spraying uniconazole on growth and nitrogen metabolism of soybean [Glycine max (L.) Merr.] cultivar “Gongxuan 1” at different nitrogen levels was studied under maize-soybean relay strip intercropping system. The results showed that, uniconazole had strong morphological effects to co...

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  4. 4

    Analysis of the main flavor compounds and bacterial flora in the fermentation process of stinky tofu brine by YAN Yan, YANG Shuo, JIANG Liwen, LIU Suchun

    Published 2025-06-01

    Taking the brine used for making stinky tofu produced by a certain company in Hunan Province as the research object, the physicochemical properties of the brine were determined, and the quality differences of the brine samples (labeled as Ⅰ to Ⅵ) with different fermentation time (454 d, 455 d, 456 d...

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  5. 5

    Determination of progesterone contents in female silkworm (Bombyx mori) moth by radioimmunoassay by GU Yan-yan, HE Wei-qiang, SHI Lian-gen

    Published 2008-01-01

    Method for determining the contents of progesterone in female silkworm (Bombyx mori) moth was studied. The progesterone could be efficiently extracted out from the female silkworm moth according to following conditions: grinding the female moth powder and sifting through 80 item, using 0.1 mol·L<...

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    Comparison of Two MicroRNA Quantification Methods for Assaying MicroRNA Expression Profiles in Wheat (Triticum aestivum L.) by Ran HAN, Yan YAN, Peng ZHOU, Hui-xian ZHAO

    Published 2014-04-01

    Two microRNA (miRNA) quantification methods, namely, poly(A) reverse transcription (RT)-quantitative real-time polymerase chain reaction (qPCR) and stem-loop RT-qPCR, have been developed for quantifying miRNA expression. In the present study, five miRNAs, including miR166, miR167, miR168, miR159, an...

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  7. 7

    The Associations of Serum Folate Forms with Metabolic Dysfunction-Associated Fatty Liver Disease and Liver Fibrosis: A Nationwide Cross-Sectional Study by Hai Zhao, Wei Fan, Yan Yan, Yuxing Liu, Xuejun Kang

    Published 2025-06-01

    <b>Background</b>: Accumulating evidence indicates a link between folate and metabolic dysfunction-associated fatty liver disease (MAFLD). <b>Objectives</b>: The aim of this study was to ascertain whether different serum folate forms are associated with newly defined MAFLD as...

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  8. 8

    Straightforward method for preparing a user-customizable DNA marker by improved overlap extension polymerase chain reaction by ZHANG Yuanyuan, YAN Yan, JIN Yulan, DONG Weiren, ZHOU Jiyong

    Published 2019-06-01

    DNA marker is a set of standards that are used to indicate the approximate molecular-mass size of certain DNA fragment which separated by agarose gel electrophoresis. In the present study, a straightforward method for preparing a user-customizable DNA marker by an improved overlap extension polymera...

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    Comparisons on soluble expression and immunoreactivity of African swine fever virus CD2v protein expressed by different prokaryotic expression vectors by FENG Mengke, WANG Xingbo, LIN Lulu, CUI Mingxian, YAN Yan, ZHOU Jiyong

    Published 2023-12-01

    The aim of this study was to systematically investigate the differences in the soluble expression level of the African swine fever virus (ASFV) CD2v protein by different prokaryotic expression vectors, and the immunoreactivities of the inclusion body and soluble CD2v proteins were compared using cli...

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    Improved Super-Twisting Sliding Mode Control of a Brushless Doubly Fed Induction Generator for Standalone Ship Shaft Power Generation Systems by Xueran Fei, Minghao Zhou, Yingyi Jiang, Longbin Jiang, Yi Liu, Yan Yan

    Published 2025-07-01

    This study proposes an improved super-twisting sliding mode (STSM) control method for a brushless doubly fed induction generator (BDFIG) used in standalone ship shaft power generation systems. Focusing on the problem of the low tracking accuracy of the power winding (PW) voltages caused by the param...

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    Expression Profiling and Functional Analysis of Candidate Odorant Receptors in <i>Galeruca daurica</i> by Jing-Hang Zhang, Ling Li, Na Li, Yan-Yan Li, Bao-Ping Pang

    Published 2022-06-01

    <i>Galeruca daurica</i> (Joannis) is an oligophagous pest in the grasslands of Inner Mongolia, China, which feed mainly on <i>Allium</i> spp. Odorant receptors (ORs) play an important role in the olfactory system in insects, and function together with olfactory co-receptor (O...

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    Low Root Zone Temperature Limits Nutrient Effects on Cucumber Seedling Growth and Induces Adversity Physiological Response by Qiu-yan YAN, Zeng-qiang DUAN, Jing-dong MAO, Xun LI, Fei DONG

    Published 2013-08-01

    Effects of root-zone temperatures (RZT) (12°C-RZT and 20°C-RZT) and different N, P, and K nutrient regimes on the growth, reactive oxygen species (ROS), and antioxidant enzyme in cucumber seedlings were investigated in hydroponics. Strong interactions were observed between RZT and nutrient on the dr...

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    Fast determination of nutritional parameters in soil based on spectroscopic techniques by JIANG Lu-lu, ZHANG Yu, WANG Yan-yan, TAN Li-hong, HE Yong

    Published 2010-07-01

    The nutritional parameters (N, P and K) in two typical soils (red soil in Quzhou and purplish clayey soil in Haining) in Zhejiang Province were determined using near infrared (NIR) and middle infrared (MIR) spectroscopy. A total of 80 soil samples were collected, 60 (30 for each variety) samples of...

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    Nitrogen Isotope Determination Method Using EA Isolink-IRMS: Comparison of Single/Double Furnace Modes and Evaluation of Measurement Accuracy by Ye-kai WANG, Nan WANG, Yan-yan ZHAO, San-zhong LI, Xi-jie YIN

    Published 2025-07-01

    Determination of nitrogen isotopes in natural samples plays an important role in scientific exploration of the global nitrogen cycle. However, compared with carbon isotope measurement, the accuracy of nitrogen isotope ratio determination is generally lower when using the high-temperature combustion...

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    Rapid discrimination of soil variety based on spectroscopic techniques by WANG Zun-yi, JIN Chun-hua, LIU Fei, WANG Yan-yan, BAO Yi-dan

    Published 2010-05-01

    Three spectral regions were investigated for the discrimination of four main soil varieties in Zhejiang Province. The three spectral regions included the visible-near infrared (Vis-NIR), near infrared (NIR), middle-infrared (MIR) spectroscopy. After spectral collection, different calibration methods...

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    Effects of foliar Zn application on rice yield and element contents under different Cd levels by SUO Yan-yan, WU Shi-wen, ZHU Jun-jie, PAN Feng-shan, FENG Ying

    Published 2012-07-01

    A pot experiment was conducted to investigate the effects of foliar zinc (Zn) fertilization at the late developmental stage on rice growth and yields under different cadmium (Cd) levels, as well as the influence on metal contents such as Zn, Cd, iron (Fe), copper (Cu), manganese (Mn), magnesium (Mg)...

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    Spatiotemporal dynamics and category transition of rural socio-ecological system vulnerability: A multi-scale analysis in the Loess Plateau, China by Zhengzong Zhang, Yuzhong Shi, Lijuan Zhuang, Zhuoluo Chen, Yan Yan, Jiayi Qin, Xueyan Zhao

    Published 2025-09-01

    Rural socio-ecological systems (SESs) in ecologically vulnerable regions are increasingly threatened by climate change and human activities, with China’s Loess Plateau (LP) serving as a critical example of escalating vulnerability challenges. However, comprehensive studies integrating multi-scale sp...

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