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石家庄S波段和X波段双偏振雷达定量降水估测应用研究

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高原气象 2025年第1期44卷 253-264页

作者：黄兆楚印佳楠杨洋张晓瑞黄毅王梧熠崔毅李禧亮河北省人工影响天气中心河北石家庄050021 河北省气象装备中心河北石家庄050021 河北省气象与生态环境重点实验室河北石家庄050021 石家庄市气象局河北石家庄050081

基于石家庄S波段雷达和X波段雷达、雨滴谱仪观测资料以及地面雨量计数据,分析两种雷达的R(ZH)、R(ZH,ZDR)、R(KDP)和R(KDP,ZDR)四种定量降水估测方法。结果表明,利用雨滴谱仪数据计算出的雷达反射率因子与雷达实测具有较好的一致性,但... 详细信息

基于石家庄S波段雷达和X波段雷达、雨滴谱仪观测资料以及地面雨量计数据,分析两种雷达的R(ZH)、R(ZH,ZDR)、R(KDP)和R(KDP,ZDR)四种定量降水估测方法。结果表明,利用雨滴谱仪数据计算出的雷达反射率因子与雷达实测具有较好的一致性,但整体偏大5 dB;两种雷达使用R(KDP,ZDR)方法估测降水结果优于其他方法,使用偏振参量KDP能明显提高降雨估测结果,使用ZDR后,测雨公式较单参量提高不明显;使用R(KDP)和R(KDP,ZDR)方法,利用X波段雷达估测降水的准确度略高于S波段雷达,可提升约10%,利用高空间分辨率的X波段雷达可以提升城市降水估测的精确度。

关键词：双偏振雷达雨滴谱定量估测降水(QPE)

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A Study on the Biocompatibility of MgO Coating Prepared by Anodic Oxidation Method on Magnesium Metal

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Journal of Bionic Engineering 2020年第1期17卷 76-91页

作者： Yangmei Chen Xugang Lu Fenghua Zhao yi Hu Shibing xiong Yuqiang Guo Ping huang Bangcheng Yang Engineering Research Center in Biomaterials Sichuan UniversityChengdu 610064China National Engineering Research Center for Biomaterials Sichuan UniversityChengdu 610064China Sichuan Guojia Biomaterials Co. LtdChengdu 610064China Jiangsu Collaborative Innovation Center of Biomedical Functional Materials Nanjing Normal UniversityNanjing 210046China Panzhihua International Research Institute of Vanadium and Titanium Panzhihua UniversityPanzhihua 617000China

Magnesium(Mg),is widely used for the bone repair in oral and orthopedic application due to excellent bioactivity,degradation and ***,the range of application is greatly limited because of the rapid degradation of Mg metal in the *** modification is an effective method to enhance the corrosion resistance and reduce the degradation rate of Mg *** the present study,pure Mg metal(P-Mg)was subjected to alkali-heat treatment(AT-Mg)or anodic oxidation-heat treatment(AO-HT-Mg).Both AT-Mg and AO-HT-Mg had a layer of MgO on their surfaces after *** the effects of MgO coating on corrosion resistance,bioactivity,Mesenchymal Stem Cells’(MSCs)proliferation,adhesion and osteogenic differentiation,and the bone repair capability of Mg metal were *** found both AT-Mg and AO-HT-Mg had stronger corrosion resistance than *** on both AT-Mg and AO-HT-Mg had higher expression of proteins and genes of ALP,OCN,Col-I and Runx2 than those on *** also showed better bone repair property than P-Mg in *** general,MgO layer formed by anodic oxidation-heat treatment had better resistance and biocompatibility than that produced by alkali-heat *** study indicated the MgO coating not only improved the corrosion resistance of Mg metal,but also promoted the osteogenic differentiation of MSCs and bone regeneration.

关键词： magnesium MgO coating alkali-heat treatment anodic oxidation-heat treatment corrosion resistance biomedical-materials

A wide-linear-range and low-hysteresis resistive strain sensor made of double-threaded conductive yarn for human movement detection

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Journal of Materials Science & Technology 2024年第5期172卷 202-212页

作者： Fei huang Jiyong Hu xiong Yan Shanghai Frontier Science Research Center for Modern Textiles Donghua UniversityShanghai 201620China

Yarn-based flexible strain sensors with advantages in wearability and integrability have attracted wide ***,it is still a big challenge to achieve yarn-based strain sensors with a wide linear strain range,low hysteresis,and durability synchronously that can be used for full range detection of human body ***,a new structure,double-threaded conductive yarn with rhythmic strain distribu-tion,is reported to markedly widen the linear strain range of microcrack-based stretchable strain sensors.A new method of winding and thermally adhering hot-melt filaments on the surface of the elastic fiber is used to achieve double-threaded yarn(DTY)with rhythmic strain *** proposed strategy,the integration of heterogeneous materials,is reported to significantly reduce the mechanical hysteresis of composite *** strain distribution of the DTY during stretching causes multi-level micro-cracks in different regions of the carbon nanotube(CNT)conductive layer deposited on the surface of the ***,the sensing performance of DTY-based strain sensor can be adjusted by designing the structural *** final prepared flexible strain sensor has the advantages of a wide linear strain range(100%),great sensitivity(GF=12.43),low hysteresis,rapid response(158 ms),high repeatability(>2000 cycles at 50%strain),and hydrophobicity,*** sensor can monitor human motion repeatedly and stably well,and shows great advantages in flexible wearable devices.

关键词： Double-threaded yarn Strain redistribution Hysteresis Human motion monitoring

Decline in semen concentration of healthy Chinese adults： evidence from 9357 participants from 2010 to 2015

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Asian Journal of Andrology 2018年第4期20卷 379-384页

作者： Hong-Fang Yuan huang-Fang Shangguan yi Zheng Tian-Qing Meng Cheng-Liang xiong huang-Tao Guan Family Planning Research Institute Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China College of Informatics Huazhong Agricultural University Wuhan 430070 China Department of Venereology Wuhan Institute of Dermatology and Venereology Wuhan 430031 China Reproductive Medicine Center Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China Hubei Province Human Sperm Bank Wuhan 430030 China

The present study aims to analyze sperm concentration trends among young and healthy Chinese adults in Wuhan, Central China, from 2010 to 2015. Semen analysis data from 9357 participants were collected and analyzed using a general linear model and the Cochran-Armitage trend test. A significant decline was observed in sperm concentration （β [standard deviation]： -1.53 [0.16]; P 〈 0.001）. In addition, a decline in sperm density was observed by stratifying student versus nonstudent sperm donors and by analyzing the year of birth or birth year cohort of the participants. Furthermore, the percentage of participants with sperm densities of over 40×10^6 ml^-1 significantly decreased with year. Notably, a dramatic decline in sperm density was recorded over the first 5 years of study.

关键词： healthy men semen concentration sperm donors temporal trends

The effects of ion screening on neutrino-nucleus interactions in core-collapse supernova explosions

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Research in Astronomy and Astrophysics 2010年第7期10卷 689-695页

作者： xiong-Ping Xia Lin yi Department of Physics Huazhong University of Science and Technology Wuhan 430074 China

The effects of ion screening in stellar core collapses are investigated based on a new progenitor star model. Simulation results show that ion screening slightly affects the leptons and decreases explosion energy, which is a negative factor for energy transfer supernova explosions. We also investigate the effect on type Ⅱ-supernova explosions of neutrino-nucleus elastic scattering based on the new progenitor star model. It is shown that, compared with the previously calculated results, neutrinos-nucleus elastic scattering in stellar core collapses is more severe, leading to an obvious reduction of the neutrino leakage energy loss and an increase of supernova explosion energy.

关键词： stars supernovae general -- neutrino-nucleus

豆浆中风味物质形成、与蛋白的互作机制及生物法改善豆浆风味的研究进展

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食品科学 2025年第2期46卷 280-289页

作者：高宇齐宝坤廖一闫世长李杨黄雨洋东北农业大学食品学院黑龙江哈尔滨150030 哈尔滨商业大学食品工程学院黑龙江哈尔滨150028

豆浆作为一种营养丰富的植物基蛋白饮品,在全球范围内受到消费者的喜爱。然而,其特有的不良风味往往影响消费者的接受度,限制了豆浆产品的市场推广。本文探讨豆浆中风味物质的形成机理、这些风味物质与豆浆中的蛋白质之间的相互作用机... 详细信息

豆浆作为一种营养丰富的植物基蛋白饮品,在全球范围内受到消费者的喜爱。然而,其特有的不良风味往往影响消费者的接受度,限制了豆浆产品的市场推广。本文探讨豆浆中风味物质的形成机理、这些风味物质与豆浆中的蛋白质之间的相互作用机制以及通过生物方法改善豆浆风味的研究进展。通过无脂氧合酶大豆品种的开发、酶处理和微生物发酵等生物方法,可以有效地改善豆浆的风味,同时保持其营养价值。最后对未来改善豆浆风味的研究方向做出展望,以期为豆浆及其制品的品质提升和市场推广提供理论依据,为推动我国大豆制品市场的发展做出贡献。

关键词：豆浆风味物质-蛋白质互作生物方法风味改良

Effects of cultivation on N_2O emission and seasonal quantitative variations of related microbes in a temperate grassland soil

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Journal of Environmental Sciences 2001年第3期13卷 376-379页

作者： huang Bin CHEN Guan xiong Laboratory of Terrestrial Ecological Process Institute of Applied EcologyChinese Academy of SciencesShenyang 110016China.

Laboratory and in situ experiments were done to investigate the influences of cultivation on temperate semi arid grassland (for 17 years spring wheat planted once every two years without fertilization) on soil N 2O emission and quantitative variations of related soil microbes. In the laboratory (25℃ and soil moisture 18%), cultivation increased soil transformations of fertilizer nitrogen (100 μg N/g as NaNO 3, urea, or as urea with dicyandiamide 1 μg N/g). The N 2O emissions from the cultivated and uncultivated soils with or without nitrogen additions were relatively low, and mainly originated from the nitrification. The soil N 2O emission due to cultivation decreased somewhat upon no fertilization or NaNO 3 addition, but significantly upon urea addition. The role of dicyandiamide as nitrification inhibitor was only considerable in the cultivated soil, and had small influence on decreasing N 2O emission in the two soils. The influence of cultivation on soil N 2O emission was also reflected by the number variations of microbes related with soil nitrogen transformation in the two soils. Compared to the uncultivated grassland, in situ ammonifiers and denitrifiers in the cultivated grassland quantitatively averagely increased, and aerobic no symbiotic azotobacters were quantitatively similar, leading to the continued decrease of organic matter content and the decrease of N 2O emission from the cultivated grassland soil.

关键词： grassland cultivation N 2O emission nitrogen fertilizer microbes

Tunable organic particles:An efficient approach from solvent-dependent Schiff base macrocycles

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Chinese Chemical Letters 2021年第11期32卷 3522-3525页

作者： ying xiong Chao huang Hongjuan Liu Rui yi Bi-Xue Zhu Xin-Long Ni Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province Guizhou UniversityCuiyang 550025China School of Chemistry and Materials Guizhou Normal UniversityGuiyang 550025China College of Chemistry and Chemical Engineering Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan ProvinceHunan Normal UniversityChangsha 410081China

The synthesis of cyclopolymers upon controlling the degree of macrocyclic polymerization,followed by the discovery of new properties has attracted increasing attention in supramolecular ***,a Schiff-base condensation method performed at room temperature was used to control the formation of[1+1]and[2+2]*** pure MeOH,the isomer[1+1]macrocycles were synthesized and organic particles such as dendritic,rods,and solid microspheres were directly precipitated from the reaction ***[1+1]macrocycles can be efficiently converted into their corresponding[2+2]macrocycles accompanied by the tunable morphology of the organic particles when n-hexane was added to the MeOH *** studies showed that these organic particles have potential application toward the selective removal of Cd^(2+)ions with different adsorption ability in MeOH solution.

关键词： Schiff base Organic particles Macrocycle Noncovalent interaction Self-assembly

ON QUADRATURE OF HIGHLY OSCILLATORY FUNCTIONS

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Journal of Computational Mathematics 2006年第5期24卷 579-590页

作者： Shu-huang Xiang Yong-xiong Zhou Department of Applied Mathematics and Software Central South University Changsha 410083 China

Some quadrature methods for integration of ∫a^bf（x）e^iwg（x）dx for rapidly oscillatory functions are presented. These methods, based on the lower order remainders of Taylor expansion and followed the thoughts of Stetter [9], Iserles and NФrsett [5], are suitable for all w and the decay of the error can be increased arbitrarily in case that g＇（x）≠0 for x∈[a, b], and easy to be implemented and extended to the improper integration and the general case I[f]=∫a^b f（x）e^ig（w,x）dx.

关键词： Oscillatory integral quadrature Filon-type method Taylor expansion.