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协同改性膳食纤维的方法及其在食品加工中的应用研究进展

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食品与发酵工业 2024年第12期50卷 411-420页

作者：温丽华郑艺欣骆贤亮欧雨嘉郭泽镔郑宝东福建农林大学食品科学学院福建福州350002 上海交通大学农业与生物学院上海200240

膳食纤维是由10个及以上吡喃葡糖基通过β-1,4糖苷键连接而成的线性多糖,主要来源于果蔬、谷类、豆制品及农副产物。膳食纤维可作为肠道益生菌的发酵底物,帮助微生物群平衡生长并发挥健康效应。然而,有序的构象结构使膳食纤维存在溶解... 详细信息

膳食纤维是由10个及以上吡喃葡糖基通过β-1,4糖苷键连接而成的线性多糖,主要来源于果蔬、谷类、豆制品及农副产物。膳食纤维可作为肠道益生菌的发酵底物,帮助微生物群平衡生长并发挥健康效应。然而,有序的构象结构使膳食纤维存在溶解度低、界面稳定性差、口感粗糙等共性问题,不利于其衍生食品的创制。因此,分子改性技术成为了调控膳食纤维结构及理化性质的重要方法。相比单一技术,多技术的协同处理在提升膳食纤维改性效率及功能适用性方面更具优势。基于此,该文重点综述了膳食纤维的协同改性方法及功能性应用,旨在为富含膳食纤维植物及其副产物的高值化加工提供理论依据和技术支撑。

关键词：膳食纤维协同改性食品加工应用

A temperature/strain-rate-dependent finite deformation constitutive and failure model for solid propellants

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中国科学:物理学、力学、天文学英文版 2023年第9期66卷 63-78页

作者： Ming Lei Erhao Chen Zeang Zhao lihua wen Jinyou Xiao Xiao Hou School of Astronautics Northwestern Polytechnical UniversityXi’an 710072China Institute of Advanced Structure Technology Beijing Institute of TechnologyBeijing 100081China China Aerospace Science and Technology Corporation Beijing 100048China

The stress-strain response under progressive damage and the ultimate failure of solid propellants are two key issues affecting the integrity of solid rocket *** research primarily focused on the progressive damage in solid propellants during production and ***,they failed to take the temperature/strain-rate-dependent ultimate failures into *** failure strains of solid propellants are experimentally observed to show strong temperature/strain-rate dependence and exhibit an abnormal evolution at low and high temperatures,*** increasing loading strain rate,the failure strains decrease at low temperatures near the glass transition temperature(T_g)but increase at high temperatures far above T_(g).In this study,we introduce the glassy and rubbery failure criteria based on strain energy densities at ultralow and ultrahigh temperatures,respectively,into a viscoelastic constitutive model and build a unified model for the progressive damage and the ultimate failure of solid *** the introduction of these two additional criterion parameters,the developed model can effectively predict the yield-type stress-strain responses,microscopic damage-induced volume dilatations,and temperature/strain-ratedependent ultimate failures of the solid propellants by comparing the model predictions with the experimental *** competition between the glassy failure and the rubbery failure results in the propellants exhibiting a maximum break strain near the glass transition ***,when the strain rate is increased,the propellants exhibit a predominantly glassy response,which shifts the failure envelope toward a higher *** induces an abnormal evolution of failure strains by making the propellants stretchable at high temperatures and brittle at low temperatures.

关键词： viscoelastic material polymeric material constitutive behavior fracture toughness failure envelope

Conceptual Metaphors on Life Theme in Shakespeare’s Sonnets and Translations

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Conceptual Metaphors on Life Theme in Shakespeare’s Sonnets...

作者： wen lihua 西安外国语大学

学位级别：硕士

生命主题作为一种高度抽象而难以描述的概念，通常需要借助其他概念来认知和描述其特点和本质，因此生命成为隐喻的一个主要喻源域。本文用莱可夫的概念隐喻理论分析莎翁十四行诗中出现的关于生命的核心概念的隐喻，具体分析了莎士比亚... 详细信息

生命主题作为一种高度抽象而难以描述的概念，通常需要借助其他概念来认知和描述其特点和本质，因此生命成为隐喻的一个主要喻源域。本文用莱可夫的概念隐喻理论分析莎翁十四行诗中出现的关于生命的核心概念的隐喻，具体分析了莎士比亚十四行诗中出现的关于生命主题的本体隐喻、结构隐喻以及方位隐喻。根据认知语言学概念隐喻的理论和奈达的功能对等理论，本文探讨了不同情况下，翻译时力求实现的动态对等的三种具体认知模式，并以此为基础赏析与比较梁宗岱、屠岸和曹明伦这三位译者的全译本中对十四行诗中有关生命主题的概念隐喻的处理。基于以上分析和综合，总结得出：相同的概念隐喻存在英汉两种语言中时，尽量采用直译，翻译成由相同的概念隐喻映射的隐喻表达式;存在相似概念隐喻或译入语中不存在该类概念隐喻时，可以采用意译策略力求实现动态对等，具体的翻译方法为：增补、删减、转换和使用汉语四字格。

关键词：概念隐喻莎士比亚十四行诗对等翻译方法

Covariance analysis of the Coulomb explosion of ammonia induced by intense nanosecond laser at 532 nm

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Chinese Science Bulletin 2005年第18期50卷 2115-2117页

作者： NIU Dongmei LI Haiyang LIANG Feng wen lihua LUO Xiaolin Key Laboratory of Environmental Optics & Technology Anhui Institute of Optics and Fine Mechanics Hefei 230031 China Dalian Institute of Chemical Physics Dalian 116023China

The Coulomb explosion of ammonia clusters induced by nanosecond laser at 532 nm with an intensity of ~1012 Wcm-2 has been studied by time of flight mass spectrometry. The dominant multiply charged ions are N3+ and N2+ with kinetic energies of 110 and 50 eV respectively. The electrons generated from the multiphoton ionization are heated through inverse bremsstrahlung by the laser field when colliding with neutral or ionic particles. When their energies surpass the corresponding ionization potentials of the molecules or ions, the subsequent electron impact ionization may take place thus resulting in multi-charged nitrogen ions. Covariance analysis is made to study the possible pathways of the Coulomb explosion.

关键词：协方差分析激光电离氨水氮离子相关性系数

基于CAN数据和图像数据融合算法的商用车能量智能优化系统

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客车技术与研究 2024年第2期46卷 6-10,14页

作者：彭旺梁丰收文李华郭琪卢逸飞比亚迪汽车工业有限公司广东深圳518118

针对当前纯CAN数据和纯图像数据的不足,提出基于CAN数据和图像数据融合的算法,并根据该算法输出的8种工况和特征开发能量智能优化系统。仿真分析表明,该能量智能优化系统能有效地节约能量。

关键词：纯电商用车 CAN数据图像数据融合算法能量优化

In situ and on-line monitoring of cadmium in soil pore water using an automatic sampling integrated electrochemical sensor

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Science China(Technological Sciences) 2024年第9期67卷 2894-2904页

作者： KUANG JiaJie wen JunLin CAI XiXi ZHOU lihua YUAN Yong Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China School of Biomedical and Pharmaceutical Sciences Guangdong University of TechnologyGuangzhou 510006China

Cadmium(Cd) contamination in soil pore water is the primary pathway for Cd uptake by food crops,such as rice(Oryza sativa L.),posing significant risks to both food safety and human *** study presents a novel soil pore water metal sensor(SPW-Msensor) for in situ and online monitoring of Cd in soil pore water(Cd_(pw)).The SPW-Msensor integrates an automated sampling device,comprising a Rhizon sampler and a reciprocating series pump with an independent dual plunger drive,along with a portable electrochemical sensor consisting of a screen-printed electrode,flow cell,and portable *** SPW-Msensor enables the detection of Cd within a linear range of 50 to 300 ppb while exhibiting high anti-interference ***,it demonstrates excellent repeatability(relative standard deviation values(RSDs)<3.6%) across 30 measurements conducted within a 2-h *** method exhibits good agreement with results obtained using the standard ICP-MS method(RSDs<5%).Additionally,this study establishes a positive correlation between Cd_(pw)detected by the SPW-Msensor and total Cd concentration(Cd_(total)) in the soil with an R^(2) value equal to *** acquired from the SPW-Msensor can be utilized for predicting Cd_(total)through partial least squares regression modeling,achieving model quality score(Q^(2)) of 0.69,adjusted R^(2) of 0.9345,and root mean square error(RMSE) of *** SPW-Msensor demonstrates real-time monitoring capabilities for assessing Cd levels in acidified *** SPW-Msensor offers an efficient approach for in-situ and continuous monitoring of Cd_(pw)that provides valuable insights applicable to environmental and agricultural domains.

关键词： cadmium pore water electrochemical sensor in-situ monitoring soil

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边界子波谱方法中的一种奇异积分方法

西北工业大学学报 2006年第3期24卷 317-320页

作者：文立华孙涛西北工业大学航天学院陕西西安710072

提出了一种处理三维轴对称H elm ho ltz积分方程子波谱方法的奇异积分方法。对于三维轴对称和三维问题的H elm ho ltz积分方程,在积分奇异点构造一个小球面,然后减去三维Lap lace方程核函数在该球面上的积分,消除奇异积分。算例表明该... 详细信息

提出了一种处理三维轴对称H elm ho ltz积分方程子波谱方法的奇异积分方法。对于三维轴对称和三维问题的H elm ho ltz积分方程,在积分奇异点构造一个小球面,然后减去三维Lap lace方程核函数在该球面上的积分,消除奇异积分。算例表明该方法有较高的精度,计算方便,原理上可用于任意三维问题。

关键词：奇异积分积分方程子波谱方法