Results 1 to 10 of about 12,159 (164)
Improvement of Antioxidant Activity of Defatted Selenium-Enriched Rice Bran by Lactic Acid Bacteria Fermentation [PDF]
, 2023 Selenium-enriched rice bran is a major by-product in the production of selenium-enriched polished rice, which is rich in selenium, dietary fiber, and active substances such as phenolic compounds.
ZHANG Jiani, ZHANG Xiaoxuan, WANG Damao, ZHAO Guohua, YU Junlei, LEI Lin
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Effect of Oak Chip Aging on the Flavor of Persimmon Brandy [PDF]
, 2023 Mopan persimmon brandy with an alcohol content of 42% (V/V), prepared by fermentation and distillation, was aged after being added with 5–20 g/L of Chinese-made moderately roasted oak chips.
LI Jiamin, SUN Jinxun, WANG Zijuan, YUAN Ye, ZHU Huixia, NIE Xinyu, LIU Kexin, ZHANG Yifan, AO Changwei
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Effect of 60Co-γ Irradiation on Postharvest Physiology and Lipid Nutrition of Fresh Hazelnuts [PDF]
, 2023 Fresh hazelnuts were treated by 60Co-γ irradiation (0, 0.25, 0.50, 0.75 and 1.00 kGy) and stored at (4.0 ± 0.5) ℃ for up to three months. Changes in physiological indexes and lipid nutrition were monitored during the storage period.
WANG Guan, YUE Xinying, LÜ Chunmao, MENG Xianjun, XUAN Jinghong, YANG Mingyuan
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Research Progress and Application Prospect of Facial Micro-Expression Analysis in Forensic Psychiatry [PDF]
, 2023 Research on facial micro-expression analysis has been going on for decades. Micro-expression can reflect the true emotions of individuals, and it has important application value in assisting auxiliary diagnosis and disease monitoring of mental disorders.
Wen LI, Hao-zhe LI, Chen CHEN, Wei-xiong CAI
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Gaoya dianqi, 2021 对GIS的振动信号进行分析可以及时有效的发现设备中存在的故障。在GIS设备的故障诊断中,特征提取是最为关键的步骤,文中针对单一种类的特征提取方法提取到的特征容易缺乏特异性这一缺点,提出了基于复合特征的GIS振动信号特征提取方法。首先将奇异值分解和基于总体最小二乘准则的旋转不变技术这两种时频法结合起来对振动信号中具有明确物理意义的特征量进行提取,对于没有明确物理意义的特征量,通过数据序列法中的变分模态分解和多重分形来对其进行提取;然后将这两种特征量组合得到新的特征量 ...
马星光 +5 more
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Gaoya dianqi, 2022 高压断路器合分闸线圈电流中含有大量信息，监测和分析线圈电流信号对于高压断路器故障检测和诊断意义重大。文中提出基于变分模态分解的方法提取线圈电流特征值，采用变分模态法分解断路器合分闸线圈电流信号，并对所得到的经验模态分量求其中心频率，根据频谱中峰值所对应的时间点，提取线圈电流信号的特征值。实验结果表明：使用该方法能够准确且有效地提取合分闸线圈电流信号的特征值。
庄瑞锋, 陈丽安, 肖梁贤
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Kongjian kexue xuebao, 2023 目标区域多维特征的建模表征是实现目标跟踪搜索的前提。传统的特征提取方法通常先连通出目标区域，再计算目标特征，实时性不强。提出了一种基于像素的连通域标记及目标特征同步计算方法，建立特征传递机制，利用标号映射表关联标号表与特征属性表，并在区域邻接时进行标号合并和特征属性同步传递计算，保证了目标区域连通完成即可输出目标区域特征。给出一种基于FPGA硬件设计的实现方案。仿真测试结果显示，此方法具有以下几方面优势：连通域标记耗时少，仅为(L × W + 2n/m) × Tclk，接近理论最小值(L × W ...
冯 水春 +5 more
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Shuitu Baochi Xuebao, 2023 精确提取梯田对于水土保持动态监测和评价非常必要,建立黄土高原小流域梯田提取技术流程可为水土流失防治提供技术支持。以甘肃省天水市水土保持科学试验站坚家山小流域为研究区域,采用无人机影像数据,基于尺度参数评估工具以影像的纹理特征为输入层,确定最优分割尺度参数;选用光谱特征和可见光植被指数为分类特征,使用面向对象分类方法对梯田进行提取。结果表明:(1)以局部方差变化率101作为多尺度分割的尺度参数时,梯田边界明显,光谱、纹理和形状特征对于描绘梯田边界具有巨大的潜力;(2)采用可见光植被指数植被颜色指数 ...
张艳超 +3 more
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Analysis of Flavor Changes of Instant Brown Rice Porridge Rice during Storage based on Gas Chromatography-Ion Mobility Spectrometry [PDF]
, 2022 In order to explore the quality changes of instant brown rice porridge rice during storage, gas chromatographic ion mobility spectrometry (GC-IMS) and dynamic principal component analysis (PCA) were used to study the changes of the composition and ...
GUAN Lina +7 more
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Dianci bileiqi, 2022 传统方法在进行±1 100 kV输电线路复合绝缘子缺陷多源特征及模式识别时，去噪效果不佳，无法提取准确的缺陷特征，模式识别用时较长。为此，提出一种新的方法解决以上问题。对输电线路复合绝缘子图像进行均衡化处理，实现图像增强；采用均值滤波方法实现图像去噪，并在二维熵的基础上完成图像分割。提取直线特征、斑点特征和分块统计特征构建复合绝缘子缺陷的特征集，应用BPSO算法融合直线特征、斑点特征与分块统计特征，获得复合绝缘子缺陷特征，构建输电线路复合绝缘子缺陷模式识别模型，实现复合绝缘子缺陷特征及模式的识别 ...
王建, 舒胜文, 金铭, 李勇杰
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