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Effects of ultrasonic-assisted extraction on bioactive compounds,volatile flavors and antioxidant activities of vine tea water extracts

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Traditional Medicine Research 2025年第1期10卷 73-81页

作者： Xiao-Long Zhou wei-Jin Jiang Ji yu Mao-Jun Yao yun-Tong Li Hunan Provincial Key Laboratory of Research Resource Mining and High-valued Utilization on Edible&Medicinal PlantCollege of Chemistry and Chemical EngineeringJishou UniversityJishou 416000China Hunan Gaoge Dairy Co. Ltd.Changsha 410000China

Background:Ampelopsis grossedentata,vine tea,which is the tea alternative beverages in *** vine tea processing,a large amount of broken tea is produced,which has low commercial ***:This study investigates the influence of different extraction methods(room temperature water extraction,boiling water extraction,ultrasonic-assisted room temperature water extraction,and ultrasonic-assisted boiling water extraction,referred to as room temperature water extraction(RE),boiling water extraction(BE),ultrasonic assistance at room temperature water extraction(URE),and ultrasonic assistance in boiling water extraction(UBE))on the yield,dihydromyricetin(DMY)content,free amino acid composition,volatile aroma components,and antioxidant properties of vine tea ***:A notable influence of extraction temperature on the yield of vine tea extracts(P<0.05),with BE yielding the highest at 43.13±0.26%,higher than that of RE(34.29±0.81%).Ultrasound-assisted extraction significantly increased the DMY content of the extracts(P<0.05),whereas DMY content in the RE extracts was 59.94±1.70%,that of URE reached 66.14±2.78%.Analysis revealed 17 amino acids,with L-serine and aspartic acid being the most abundant in the extracts,nevertheless ultrasound-assisted extraction reduced total free amino acid *** chromatography-mass spectrometry analysis demonstrated an increase in the diversity and quantity of compounds in the vine tea water extracts obtained through ultrasonic-assisted ***,69 and 68 volatile compounds were found in URE and UBE extracts,which were higher than the number found in RE and BE *** vitro,antioxidant activity assessments revealed varying antioxidant capacities among different extraction methods,with RE exhibiting the highest DPPH scavenging rate,URE leading in ABTS•+free radical scavenging,and BE demonstrating superior ferric ion reducing antioxidant ***:The findings suggest that extraction methods signi

关键词： vine tea dihydromyricetin ultrasonic-assisted extraction volatile aroma components

Accuracy and Consistency of the Explicit-Invariant Energy Quadratization Approach for the Cahn-Hilliard Equation

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Journal of Mathematical Research with Applications 2025年第1期 84-104页

作者： Jun ZHANG Fangying song yu ZHANG Computational Mathematics Research Center Guizhou University of Finance and Economics School of mathematics and statistics Guizhou University of Finance and Economics School of Mathematics and Stastistics Fuzhou University

It is well known that the explicit-invariant energy quadratization (EIEQ) approach can generate fully decoupled, linear and unconditionally energy-stable numerical schemes, so it is favored by many researchers. However, the undeniable fact is that the numerical method obtained by EIEQ approach preserves the “modified” energy law instead of the original *** is mainly due to the introduction of some auxiliary variables in EIEQ scheme, and the truncation error will make the auxiliary variables deviate from the original definition in the process of numerical calculation. The primary objective of this paper is to address this gap by providing the accuracy and consistency of the EIEQ method in the context of the CahnHilliard equation. We introduce a relaxation technique for auxiliary variables and construct two numerical schemes based on EIEQ. The analysis results show that the newly constructed schemes are not only unconditionally energy stable, linear and fully decoupled, but also can effectively correct the errors introduced by auxiliary variables and follow the original energy ***, several 2D and 3D numerical examples illustrate the accuracy and efficiency of the newly constructed numerical schemes.

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Targeting TrkB–PSD-95 coupling to mitigate neurological disorders

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Neural Regeneration Research 2025年第3期20卷 715-724页

作者： Xin Yang yu-Wen Alvin Huang John Marshall Department of Molecular Biology Cell Biology and BiochemistryBrown UniversityProvidenceRIUSA Department of Neurology Warren Alpert Medical School of Brown UniversityProvidenceRIUSA Center for Translational Neuroscience Robert J.and Nancy D.Carney Institute for Brain Science and Brown Institute for Translational ScienceBrown UniversityProvidenceRIUSA

Tropomyosin receptor kinase B(TrkB)signaling plays a pivotal role in dendritic growth and dendritic spine formation to promote learning and *** activity-dependent release of brain-derived neurotrophic factor at synapses binds to pre-or postsynaptic TrkB resulting in the strengthening of synapses,reflected by long-term ***,the association of postsynaptic density protein-95 with TrkB enhances phospholipase Cγ-Ca^(2+)/calmodulin-dependent protein kinaseⅡand phosphatidylinositol 3-kinase-mechanistic target of rapamycin signaling required for long-term *** this review,we discuss TrkB-postsynaptic density protein-95 coupling as a promising strategy to magnify brain-derived neurotrophic factor signaling towards the development of novel therapeutics for specific neurological disorders.A reduction of TrkB signaling has been observed in neurodegenerative disorders,such as Alzheimer's disease and Huntington's disease,and enhancement of postsynaptic density protein-95 association with TrkB signaling could mitigate the observed deficiency of neuronal connectivity in schizophrenia and *** with brain-derived neurotrophic factor is problematic,due to poor pharmacokinetics,low brain penetration,and side effects resulting from activation of the p75 neurotrophin receptor or the truncated TrkB.T1 *** TrkB agonists and antibodies that activate TrkB are being intensively investigated,they cannot distinguish the multiple human TrkB splicing isoforms or cell type-specific *** TrkB–postsynaptic density protein-95 coupling provides an alternative approach to specifically boost TrkB signaling at localized synaptic sites versus global stimulation that risks many adverse side effects.

关键词： Angelman syndrome autism brain-derived neurotrophic factor depression neurodegenerative disorder neurodevelopmental disorder postsynaptic density protein-95 synaptic plasticity TrkB

秸秆块(粒)状压缩饲料全营养混合日粮生产试验

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中国牛业科学 2017年第2期43卷 21-24页

作者：宋福超魏玉兵权金鹏甘肃省张掖市世行项目办甘肃张掖734000 甘州区平山湖乡畜牧站

本文通过以农作物秸秆压缩生产块状饲料这项技术为载体,将全混合日粮的配合技术贯穿于此,从而探索确定适宜的农作物秸秆块(粒)状压缩饲料全营养混合日粮生产工艺及主要技术参数。试验表明:(1)农作物秸秆含水量在15%的水平下,利用苜蓿、... 详细信息

本文通过以农作物秸秆压缩生产块状饲料这项技术为载体,将全混合日粮的配合技术贯穿于此,从而探索确定适宜的农作物秸秆块(粒)状压缩饲料全营养混合日粮生产工艺及主要技术参数。试验表明:(1)农作物秸秆含水量在15%的水平下,利用苜蓿、玉米、燕麦等多种农作物秸秆,且合理地粉碎和揉碎可有效地提升秸秆块(粒)状饲料的质量;(2)秸秆压缩饲料体积小,便于长途运输、长期储存和商品化营销;(3)通过添加精料和营养成份,能够提高牲畜采食率和饲料消化吸收率。

关键词：秸秆全营养饲料工艺

Correlation between the rock mass properties and maximum horizontal stress:A case study of overcoring stress measurements

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 39-48页

作者： Peng Li Meifeng Cai Shengjun Miao yuan Li yu Wang Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116China

Understanding the mechanical properties of the lithologies is crucial to accurately determine the horizontal stress *** investigate the correlation between the rock mass properties and maximum horizontal stress,the three-dimensional(3D)stress tensors at 89 measuring points determined using an improved overcoring technique in nine mines in China were adopted,a newly defined characteristic parameter C_(ERP)was proposed as an indicator for evaluating the structural properties of rock masses,and a fuzzy relation matrix was established using the information distribution *** results indicate that both the vertical stress and horizontal stress exhibit a good linear growth relationship with *** is no remarkable correlation between the elastic modulus,Poisson's ratio and depth,and the distribution of data points is scattered and ***,there is no obvious relationship between the rock quality designation(RQD)and *** maximum horizontal stress σ_(H) is a function of rock properties,showing a certain linear relationship with the C_(ERP)at the same *** addition,the overall change trend of σ_(H) determined by the established fuzzy identification method is to increase with the increase of C_(ERP).The fuzzy identification method also demonstrates a relatively detailed local relationship betweenσ_H and C_(ERP),and the predicted curve rises in a fluctuating way,which is in accord well with the measured stress data.

关键词： overcoring stress measurements elastic modulus Poisson's ratio rock quality designation maximum horizontal stress fuzzy identification

Nanostructured ZnO/BiVO_(4)I-scheme heterojunctions for piezocatalytic degradation of organic dyes via harvesting ultrasonic vibration energy

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 488-497页

作者： Yiling Li Xiaoyao yu Yingjie Zhou Yao Lin Ying Wu Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Materials ScienceZhejiang Normal UniversityJinhua 321004China

BiVO_(4)porous spheres modified by ZnO were designed and synthesized using a facile two-step *** resulting ZnO/BiVO_(4)composite catalysts have shown remarkable efficiency as piezoelectric catalysts for degrading Rhodamine B(RhB)unde mechanical vibrations,they exhibit superior activity compared to pure *** 40wt%ZnO/BiVO_(4)heterojunction composite displayed the highest activity,along with good stability and *** enhanced piezoelectric catalytic activity can be attributed to the form ation of an I-scheme heterojunction structure,which can effectively inhibit the electron-hole ***,hole(h+)and superoxide radical(·O_(2)^(-))are proved to be the primary active ***,ZnO/BiVO_(4)stands as an efficient and stable piezoelectric catalyst with broad potential application in the field of environmental water pollution treatment.

关键词： piezoelectric catalytic heterojunction dye degradation ultrasonic vibration

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聚氨酯/丙烯酸树脂互穿网络涂饰剂的研究

印染助剂 2006年第4期23卷 23-24页

作者：戚莉宋聿炜章旻陈玉娟江苏钟山化工有限公司江苏南京210038

以带活性氢的核/壳丙烯酸树脂作为母液,将含—NCO端基的聚氨酯预聚体分散其中,通过接枝、交联和相互贯穿形成互穿网络.研究了丙烯酸树脂链上活性氢数目、聚氨酯预聚体—NCO端基量、亲水基团量、相互贯穿程度等对产品性能的影响.

关键词：聚氨酯丙烯酸树脂互穿网络水性涂饰剂

Gaussian和Multiwfn软件在计算制冷剂介电常数中的应用

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广州化工 2023年第14期51卷 147-150页

作者：马跃吴学秋杨敏宋卫余中国石油大学(北京)理学院北京102249

物理化学的主要研究内容之一是化学体系的微观结构和性质。介电常数是物质的重要物理量,与物质的电子结构紧密相关。结合物理化学分析方法,利用Gaussian和Multiwfn软件对制冷剂材料的介电常数进行了探究,并与相应的实验值进行了对比分... 详细信息

物理化学的主要研究内容之一是化学体系的微观结构和性质。介电常数是物质的重要物理量,与物质的电子结构紧密相关。结合物理化学分析方法,利用Gaussian和Multiwfn软件对制冷剂材料的介电常数进行了探究,并与相应的实验值进行了对比分析。通过结合分子可视化和量子化学计算软件,提高了化学教学的生动性,将该研究方法用于课堂教学,激发学生的研究兴趣,有利于学生对相关知识的理解。

关键词：物理化学介电常数 Gaussian 09软件 Multiwfn软件

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基于激光扫描的移动机器人行走环境直线检测

传感器与微系统 2017年第3期36卷 120-123页

作者：文伟松谭彧朱凯梁盛好中国农业大学工学院北京100083

提出一种移动机器人行走环境直线检测算法;对激光传感器采集的环境信息作预处理,设计分割、提取规则将离散距离信息转化为具备明显特征的直线段序列,考虑传感器误差用最小二乘法拟合直线段;计算拟合误差作为直线分割提取的阈值自动调整... 详细信息

提出一种移动机器人行走环境直线检测算法;对激光传感器采集的环境信息作预处理,设计分割、提取规则将离散距离信息转化为具备明显特征的直线段序列,考虑传感器误差用最小二乘法拟合直线段;计算拟合误差作为直线分割提取的阈值自动调整条件,实现阈值自动调整。基于极坐标内直线协方差矩阵计算Mahalanobis距离,实现直线合并,不丢失环境信息同时降低其直线存储量。与传统的Split-andMerge算法相比,解决了对分割阈值参数敏感的问题。经过实验证明:直线检测算法能够有效检测出直线特征。

关键词：移动机器人直线检测阈值