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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

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基于UFAC应力吸收层的抗反射裂缝性能评价

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河南理工大学学报（自然科学版） 2025年第1期44卷 185-192页

作者：李智童竞华南理工大学土木与交通学院广东广州510641

目的为了解决“白加黑”技术中的反射裂缝问题,针对目前常用的悬浮密实型高弹改性沥青混合料(super flexible asphalt concrete,SFAC)应力吸收层变形量较大、容易造成上部沥青加铺层不利于受力的缺陷,方法提出基于CAVF法和富沥青理念优... 详细信息

目的为了解决“白加黑”技术中的反射裂缝问题,针对目前常用的悬浮密实型高弹改性沥青混合料(super flexible asphalt concrete,SFAC)应力吸收层变形量较大、容易造成上部沥青加铺层不利于受力的缺陷,方法提出基于CAVF法和富沥青理念优化设计的骨架密实型UFAC应力吸收层。采用有限元ABAQUS数值模拟方法对“白加黑”路面结构进行受力分析,并通过加速加载试验、冲击韧性试验和劈裂试验对材料与结构的抗反射裂缝性能进行评价。结果重载条件下,UFAC应力吸收层和高弹改性沥青应力吸收层的竖向位移相差5.93×10^(-2)mm,沥青加铺层底部所受竖向压应力σy、最大主应力σ_(max)、最大剪应力τ_(12)分别降低24%,32.3%,27.7%。当路面存在严重脱空或常规脱空情况时,基于UFAC应力吸收层的路面结构比GAC加铺路面结构的抗疲劳开裂性能分别提升48%,36%。与传统的悬浮型砂粒式AC-5应力吸收层相比,UFAC-5应力吸收层的冲击韧性增加60.8%,劈裂抗拉强度提高16.8%。结论基于UFAC应力吸收层的沥青加铺技术,通过增大常规改性沥青膜厚保证必要的疲劳抗拉能力,并采用骨架密实型级配显著提高集料间的嵌挤能力和内摩阻力,减小层间结构变形,可有效减缓沥青加铺层反射裂缝的产生与发展。

关键词：应力吸收层薄层富沥青混合料骨架密实型有限元数值模型抗压变形

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平台灵活就业人员劳动权益保护的立法困境与对策

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河北学刊 2025年第1期45卷 172-182页

作者：冯辉贺小桐对外经济贸易大学法学院

以人力资源和社会保障部颁布的规范性文件为代表,中国关于平台灵活就业人员劳动权益保护的立法取得了重要的成就,但也存在着程序重于实体、形式重于实质、立法重点与实践需要有所偏离等困境。应以实质公平为理念,促进平台与灵活就业人... 详细信息

以人力资源和社会保障部颁布的规范性文件为代表,中国关于平台灵活就业人员劳动权益保护的立法取得了重要的成就,但也存在着程序重于实体、形式重于实质、立法重点与实践需要有所偏离等困境。应以实质公平为理念,促进平台与灵活就业人员的利益平衡,在尊重平台组织管理权力的基础上激励其履行社会责任;合理规制平台的利益分配权和劳动规则制定权,强化平台利益分配和规则制定的公平性;完善社会保险、职业伤害保障和纠纷解决领域的公共产品供给。

关键词：平台灵活就业人员劳动权益保护利益分配劳动规则实质公平

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A novel flexible nerve guidance conduit promotes nerve regeneration while providing excellent mechanical properties

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Neural Regeneration Research 2025年第7期20卷 2084-2094页

作者： tong Li Quhan Cheng Jingai Zhang Boxin Liu Yu Shi Haoxue Wang Lijie Huang Su Zhang Ruixin Zhang Song Wang Guangxu Lu Peifu Tang Zhongyang Liu Kai Wang Department of Orthopedics the Fourth Medical Center of Chinese PLA General HospitalBeijingChina Department of Training and Sports Medicine Characteristic Medical Center of Chinese People’s Armed Police ForceTianjinChina Medical School of Chinese PLA BeijingChina Key Laboratory of Bioactive Materials for the Ministry of Education College of Life SciencesNankai UniversityTianjinChina Department of Orthopedics Tianjin HospitalTianjinChina Department of Rehabilitation Medicine Er Quan Hospital of PAPWuxiJiangsu ProvinceChina

Autografting is the gold standard for surgical repair of nerve defects>5 mm in length;however,autografting is associated with potential complications at the nerve donor *** an alternative,nerve guidance conduits may be *** ideal conduit should be flexible,resistant to kinks and lumen collapse,and provide physical cues to guide nerve *** designed a novel flexible conduit using electrospinning technology to create fibers on the innermost surface of the nerve guidance conduit and employed melt spinning to align ***,we prepared disordered electrospun fibers outside the aligned fibers and helical melt-spun fibers on the outer wall of the electrospun fiber *** presence of aligned fibers on the inner surface can promote the extension of nerve cells along the *** helical melt-spun fibers on the outer surface can enhance resistance to kinking and compression and provide *** novel conduit promoted nerve regeneration and functional recovery in a rat sciatic nerve defect model,suggesting that it has potential for clinical use in human nerve injuries.

关键词： aligned fibers anti-kinking helical fibers nerve guidance conduit nerve regeneration peripheral nerve injury topological guidance

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FORECASTING NIKKEI 225 INDEX WITH SUPPORT VECTOR MACHINE

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Journal of Systems Science & Complexity 2003年第4期16卷 415-423页

作者： huangwei YoshiteruNakamori WANGShouyang YULean SchoolofKnowledgeScience JapanAdvancedInstituteofScienceandTechnology1-1AsahidaiTatstmokuchiIshikawa923-1292Japan InstituteofSystemsScience AcademyofMathematicsandSystemsSciencesChineseAcademyofSciencesB SchoolofKnowledgeScience JapanAdvancedInstituteofScienceandTechnology1-1AsahidaiTatsunokuchiIshikawa923-1292Japan InstituteofSystemsScience AcademyofMathematicsandSystemsSciencesChineseAcademyofSciencesBeijing100080China

Support Vector Machine (SVM) is a very specific type of learning algorithms characterized by the capacity control of the decision function, the use of the kernel functions and the sparsity of the solution. In this paper, we investigate the predictability of financial movement direction with SVM by forecasting the weekly movement direction of NIKKEI 225 index. To evaluate the forecasting ability of SVM, we compare the perfor-mance with those of Linear Discriminant Analysis, Quadratic Discriminant Analysis and Elman Backpropagation Neural Networks. The experiment results show that SVM outperforms other classification methods. Furthermore, we propose a combining model by integrating SVM with other classification methods. The combining model performs the best among the forecasting methods.

关键词： support vector machine forecasting multivariate classification

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Predicting the growth performance of growing-finishing pigs based on net energy and digestible lysine intake using multiple regression and artificial neural networks models

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Journal of Animal Science and Biotechnology 2022年第6期13卷 1932-1944页

作者： Li Wang Qile Hu Lu Wang huangwei Shi Changhua Lai Shuai Zhang State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193P.R.China

Backgrounds:Evaluating the growth performance of pigs in real-time is laborious and expensive,thus mathematical models based on easily accessible variables are *** regression(MR)is the most widely used tool to build prediction models in swine nutrition,while the artificial neural networks(ANN)model is reported to be more accurate than MR model in prediction ***,the potential of ANN models in predicting the growth performance of pigs was evaluated and compared with MR models in this ***:Body weight(BW),net energy(NE)intake,standardized ileal digestible lysine(SID Lys)intake,and their quadratic terms were selected as input variables to predict ADG and F/G among 10 candidate *** the training phase,MR models showed high accuracy in both ADG and F/G prediction(R^(2)_(ADG)=0.929,R^(2)_(F/G)=0.886)while ANN models with 4,6 neurons and radial basis activation function yielded the best performance in ADG and F/G prediction(R^(2)_(ADG)=0.964,R^(2)_(F/G)=0.932).In the testing phase,these ANN models showed better accuracy in ADG prediction(CCC:0.976 vs.0.861,R^(2):0.951 vs.0.584),and F/G prediction(CCC:0.952 vs.0.900,R^(2):0.905 vs.0.821)compared with the MR ***,the“over-fitting”occurred in MR models but not in ANN *** validation data from the animal trial,ANN models exhibited superiority over MR models in both ADG and F/G prediction(P<0.01).Moreover,the growth stages have a significant effect on the prediction accuracy of the ***:Body weight,NE intake and SID Lys intake can be used as input variables to predict the growth performance of growing-finishing pigs,with trained ANN models are more flexible and accurate than MR ***,it is promising to use ANN models in related swine nutrition studies in the future.

关键词： Multiple regression model Neural networks Pig Prediction

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去亚甲基小檗碱的药理作用研究进展

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中国药理学通报 2025年第1期41卷 7-12页

作者：李靖琪张琪陈雨桐仝永斌鲁澄宇广东医科大学药学院广东东莞523808

去亚甲基小檗碱(demethyleneberberine,DMB)是小檗碱在体内的主要代谢产物之一,其具有广泛的药理特性。大量研究表明其具有改善感染、抗炎、抗纤维化、抑制癌细胞、调节血脂等多种生物活性,而且在神经退行性疾病治疗领域有巨大潜力。该... 详细信息

去亚甲基小檗碱(demethyleneberberine,DMB)是小檗碱在体内的主要代谢产物之一,其具有广泛的药理特性。大量研究表明其具有改善感染、抗炎、抗纤维化、抑制癌细胞、调节血脂等多种生物活性,而且在神经退行性疾病治疗领域有巨大潜力。该文通过对DMB药理作用及其机制进行系统概述,以期为深入理解其药理作用及合理开发提供科学依据。

关键词：去亚甲基小檗碱药理作用抗感染抗炎肝保护神经保护

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Fine Mapping and Analysis of DWARF TILLER1 in Controlling Rice Architecture

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Journal of Genetics and Genomics 2013年第9期40卷 493-495页

作者： Wenfei Wang huangwei Chu Dabing Zhang Wanqi Liang Key Laboratory of Plant Molecular Physiology Institute of BotanyChinese Academy of Sciences Graduate University of the Chinese Academy of Sciences State Key Laboratory of Hybrid Rice School of Life Sciences and BiotechnologyShanghai Jiao Tong University

Rice is one of the most consumed staple food plants around the world, and its plant architecture is very important to improve the grain yield （Zhang et al., 2008）. Plant height, leaf angle, tiller number and angle, and uniformity of panicle layer all can have strong effects on grain yield （Wang and Li, 2008）. During the long history of domestication, rice has been selected to develop uniform tiller height architecture that ensures panicle layer uniformity and ease of harvesting （Ma et al., 2009）, and is largely determined by the synchronic culm elongation.

关键词： DWT Fine Mapping and Analysis of DWARF TILLER1 in Controlling Rice Architecture

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Effects of dietary oil sources and fat extraction methods on apparent and standardized ileal digestibility of fat and fatty acids in growing pigs

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Journal of Animal Science and Biotechnology 2023年第2期14卷 760-770页

作者： Lu Wang Wenjun Gao Junyan Zhou huangwei Shi Tenghao Wang Changhua Lai State Key Laboratory of Animal Nutrition Ministry of Agriculture Feed Industry CentreChina Agricultural UniversityHaidian DistrictNo.2 Yuanmingyuan West RoadBeijing 100193P.R.China Beijing Bio-Feed Additives Key Laboratory China Agricultural UniversityBeijing 100193P.R.China Zhejiang Qinglian Food Co. Ltd.Jiaxing 314399P.R.China.

Background:There is a lack of data for the standardized ileal digestibility(SID) of fat and fatty acids in national feed *** addition,it is important to specify the procedures used for fat ***,an experiment was conducted to 1) determine the apparent ileal digestibility(AID) and SID of fat and fatty acids in ten different oil sources for growing pigs and to develop prediction equations for SID of fat based on fatty acid composition;and 2) compare the effect of the fat extraction methods on the calculated values for endogenous loss and digestibility of ***:Twenty-two barrows(initial body weight:32.1 ± 2.3 kg) were surgically fitted with a T-cannula in the distal ileum,and allotted to 1 of 11 experimental diets in a 4-period Youden Square design.A fat-free diet was formulated using cornstarch,soy protein isolate and *** oil-added diets were formulated by adding 6% of dietary oil sources to the fat-free diet at the expense of *** diets contained 26% sugar beet pulp and 0.40% chromic ***:The endogenous loss of ether extract(EE) was lower than that of acid-hydrolyzed fat(AEE;P < 0.01).There were significant differences in the AID and SID of fat and saturated fatty acids across the dietary oil sources(P < 0.05).The SID of AEE for palm oil was lower than that of sunflower oil,corn oil,canola oil,rice oil and flaxseed oil(P < 0.01).The AID and SID of fat ranged from 79.65% to 86.97% and from 91.14% to 99.18%.Although the AID of EE was greater than that of AEE(P < 0.01),there was no significant difference in SID of EE and AEE except for palm *** ratio of unsaturated to saturated fatty acids(U/S) had a positive correlation with SID of fat(P < 0.05),whereas C16:0 and long chain saturated fatty acids(LSFA) were significant negatively correlated with SID of fat(P < 0.01).The best-fit equation to predict SID of fat was SID AEE = 102.75-0.15 × LSFA-0.74 × C18:0-0.03 × C18:1(Adjusted coefficient of determination = 0.88

关键词： Fat extraction methods Fatty acids Growing pigs Ileal digestibility Oil sources

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基于剩余碰撞时间的线控制动分层控制策略

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江苏大学学报（自然科学版） 2025年第1期46卷 28-35,63页

作者：童叙王宇宁关艺博田韶鹏吴桐武汉理工大学现代汽车零部件技术湖北省重点实验室湖北武汉430070 武汉理工大学汽车零部件技术湖北省协同创新中心湖北武汉430070 武汉理工大学湖北省新能源与智能网联车工程技术研究中心湖北武汉430070 武汉理工大学佛山仙湖实验室广东佛山528200

针对不同制动工况需求的制动策略存在差异的情况,提出一种线控制动分层控制策略.在该分层策略的上层,利用二阶TTC安全碰撞时间模型计算出车辆与前车的剩余碰撞时间,以此作为依据进行制动策略的选取,并建立了汽车二自由度模型、车身法向... 详细信息

针对不同制动工况需求的制动策略存在差异的情况,提出一种线控制动分层控制策略.在该分层策略的上层,利用二阶TTC安全碰撞时间模型计算出车辆与前车的剩余碰撞时间,以此作为依据进行制动策略的选取,并建立了汽车二自由度模型、车身法向受力模型和Burckhardt轮胎模型;在该分层策略的下层,进行了制动力在轮间的分配,使用序列二次规划(SQP)方法,分别在一般制动、紧急制动、失稳制动3种工况下,以轮胎滑移率为对象建立优化函数,对车辆制动力进行了优化分配.使用MATLAB/Simulink和Carsim进行了联合仿真,对所提出3种工况下的制动分配策略进行了有效性验证.结果表明:在一般制动工况下,采用该策略时相比对照工况制动距离减少18.08%,制动时间减少25.12%;在紧急制动工况下,采用该策略时相比对照工况制动距离减少19.17%,制动时间减少12.79%;在失稳制动工况下,该策略可通过轮胎差扭来提升车辆的横向稳定性.采用文中制动策略显著提升了车辆的制动效能.

关键词：线控制动制动力优化分配分层控制序列二次规划方法 ECE法规制动仿真滑模控制碰撞时间

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