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Changes in Polyphenols and Antioxidant Activities of Yingshan Yunwu Tea during Digestion in Vitro

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Medicinal Plant 2024年第2期15卷 21-25页

作者： ruyi zheng Jinjie ZHOU Wenzhuo WU Jianfeng ZHAN Peng WU Ting DING Weixin WANG College of Biology and Agricultural Resources Huanggang Normal UniversityHubei Collaborative Innovation Center for the Characteristic Resources Exploitation of Dabie MountainsHubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive UtilizationHuanggang 438000China Hubei Hongan County Public Inspection and Testing Center Huanggang 438000China

[Objectives]To explore the change rule of polyphenol content and antioxidant activity of coarse old leaves of Yingshan Yunwu Tea in the process of human digestion.[Methods]The coarse and old leaves of Yunwu tea in Yingshan,Huanggang,Hubei Province were selected as the research object,and their digestion in vitro was *** total polyphenol content was determined by Folin-phenol reagent colorimetric method,and the DPPH radical scavenging activity and total antioxidant activity were determined.[Results]After simulated gastrointestinal digestion in vitro,the polyphenol content and antioxidant activity of coarse old leaf tea soup showed a downward *** gastrointestinal digestion,the polyphenol content in tea infusion separately decreased by 31.8%and 8.5%;the scavenging rate of DPPH free radical was 97%before digestion,decreased to 92%after gastric digestion and 65%after intestinal digestion,which decreased by 5%and 27%,respectively;after gastrointestinal digestion,the total antioxidant capacity of tea soup decreased by 4.7%and 3.1%,respectively.[Conclusions]This study provided a reference for the development and application of coarse old leaves of Yingshan Yunwu tea,and provided a reference for the nutritional value evaluation and comprehensive utilization of coarse old leaves,so as to make the best use of coarse tea leaves and reduce the waste of resources.

关键词： Coarse old leaves of Yunwu tea Polyphenol Digestion in vitro Antioxidant activity

行动导向教学法在中职旅游专业教学中的应用探究

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成才之路 2024年第25期 89-92页

作者：郑如意福建省漳州高新职业技术学校福建漳州363601

近年来,中职教育改革不断深入,强调以学生为中心,注重实践教学和职业素养的培养。行动导向教学法是一种以实践为导向、以学生为主体的教学方法,与中职教育改革的理念高度契合,成为推动中职旅游专业教学改革的重要力量。行动导向教学法... 详细信息

近年来,中职教育改革不断深入,强调以学生为中心,注重实践教学和职业素养的培养。行动导向教学法是一种以实践为导向、以学生为主体的教学方法,与中职教育改革的理念高度契合,成为推动中职旅游专业教学改革的重要力量。行动导向教学法通过设定具体的学习任务和实践项目,让学生在完成任务的过程中主动学习、探索和实践,有助于满足学生的学习需求,提升他们的学习效果。文章阐述行动导向教学法的基本内涵与特征,探讨行动导向教学法在中职旅游专业教学中的应用策略,旨在全面提升中职旅游专业的教学质量,为社会培养更多具备高素质、高技能的旅游行业人才。

关键词：中职行动导向教学法旅游专业应用策略职业素养人才培养

基于经验模态分解-灰色关联度分析-蒲公英优化器改进Elman网络的锂离子电池健康状态估计

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电网技术 2024年第9期48卷 3695-3704,I0050,I0051-I0054页

作者：钱玉村杨博郑如意梁柏骁吴鹏宇昆明理工大学电力工程学院云南省昆明市650500

准确、可靠的锂离子电池健康状态(state-of-health,SOH)估计有助于提高电池设备的安全和稳定运行。针对目前SOH无法直接测量、健康特征难以提取和估计方法不足等问题,提出了一种基于经验模态分解-灰色关联度分析-蒲公英优化器(empirical... 详细信息

准确、可靠的锂离子电池健康状态(state-of-health,SOH)估计有助于提高电池设备的安全和稳定运行。针对目前SOH无法直接测量、健康特征难以提取和估计方法不足等问题,提出了一种基于经验模态分解-灰色关联度分析-蒲公英优化器(empirical mode decomposition-dandelion optimizer,EMDDO)Elman的锂离子电池SOH估计方法。基于NASA Ames研究中心公开的锂离子电池老化测试数据和实际实验测试数据,提出利用经验模态分解(empirical mode decomposition,EMD)对电池老化数据进行信号分解,从而得到反映电池SOH的特征分量,然后利用灰色关联度分析(grey relation analysis,GRA)对特征分量进行相关性分析来选择模型输入。最后,应用蒲公英优化器(dandelion optimizer,DO)对Elman网络的参数进行优化来提高神经网络的估计性能。实验结果表明,该方法能够准确地估计出锂离子电池的SOH,其估计结果的R2始终大于98%,此外,通过对电池数据在不同训练集数量情况下的SOH估计验证,进一步证明了所提出的估计模型有着良好的泛化性和鲁棒性。

关键词：锂离子电池健康状态经验模态分解灰色关联度分析蒲公英优化器 Elman网络

不同改良方式协同黑麦草对煤矸石堆场生态修复效果

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草业科学 2024年第9期41卷 1991-2002页

作者：卢雨霞朱健曾维毛文件郑汝意王维维范菲菲贵州大学资源与环境工程学院/喀斯特地质资源与环境教育部重点实验室贵州贵阳550025 贵州喀斯特环境生态系统教育部野外科学观测研究站贵州贵阳550025 贵州省农业科学院土壤肥料研究所贵州贵阳550006

为了探究基质改良和植被恢复在煤矸石堆场生态修复中的可行性,本研究使用甲酸钠作为煤矸石杀菌剂,并将菌渣、磷石膏和酒厂污泥按不同比例添加到煤矸石中制成不同的植生基质,以种植黑麦草(Lolium perenne)进行植被恢复试验,同时监测其基... 详细信息

为了探究基质改良和植被恢复在煤矸石堆场生态修复中的可行性,本研究使用甲酸钠作为煤矸石杀菌剂,并将菌渣、磷石膏和酒厂污泥按不同比例添加到煤矸石中制成不同的植生基质,以种植黑麦草(Lolium perenne)进行植被恢复试验,同时监测其基质渗滤液的理化特性、黑麦草生长状况以及基质的微生物群落结构。结果表明:1)不同植生基质均能显著提高煤矸石渗滤液的pH,并显著降低渗滤液中总Fe、Mn、Cu等重金属浓度。其中,添加5%菌渣和20%酒厂污泥的综合效果最佳。2)菌渣、磷石膏和酒厂污泥的添加均能显著促进黑麦草的生长,其中添加5%菌渣、10%磷石膏和20%酒厂污泥的煤矸石基质中黑麦草生物量最大。黑麦草植株内重金属均满足《饲料卫生标准》(GB 13078-2017)中饲料原料的限值。3)基质改良后细菌群落多样性和相对丰度明显增加。甲酸钠杀菌明显改变了细菌群落结构,其余改良方式中,变形菌门、放线菌门、厚壁菌门、绿弯菌门和拟杆菌门为主要优势细菌门。综上,添加5%菌渣和20%酒厂污泥对煤矸石中污染物溶出具有最佳控制效果,同时可快速恢复煤矸石基质植被,具有较好的生态和经济效益。

关键词：煤矸石基质改良黑麦草渗滤液微生物群落结构

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莲藕对鱼糜凝胶品质的影响

食品科技 2024年第3期49卷 120-125页

作者：黄彩芸谢媛媛陈尉怡郑如依陈训俭付裕含王蔚新黄冈师范学院生物与农业资源学院大别山特色资源开发协同创新中心湖北省经济林种质资源改良与资源综合利用重点实验室湖北黄冈438000

鱼糜制品是一种以鱼肉为原料加工制成的食品,其蛋白质含量高、脂肪含量低、易于消化吸收,且来源丰富,因此深受广大消费者喜爱。莲藕营养成分丰富,淀粉含量较高。文章探讨莲藕添加量对鱼糜凝胶品质的影响,以期为莲藕在鱼糜制品中的应用... 详细信息

鱼糜制品是一种以鱼肉为原料加工制成的食品,其蛋白质含量高、脂肪含量低、易于消化吸收,且来源丰富,因此深受广大消费者喜爱。莲藕营养成分丰富,淀粉含量较高。文章探讨莲藕添加量对鱼糜凝胶品质的影响,以期为莲藕在鱼糜制品中的应用提供一定的理论支持。结果表明,随着莲藕添加量的增加,鱼糜凝胶的白度以及感官评分中的色泽以及组织状态与空白组相比,有轻微浮动,整体影响不显著(P>0.05)。鱼糜凝胶的蒸煮损失率、质构和感官评分中的滋味、气味以及总分呈现出先上升后下降的趋势。当莲藕添加量达到20%时,各项指标均达到最大值。该方法旨在探究不同莲藕添加量对鱼糜凝胶品质的影响,以求为莲藕产品的开发和利用提供一定的理论基础。

关键词：鱼糜凝胶质构莲藕影响

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沈景允论治冻结肩经验介绍

新中医 2024年第4期56卷 199-203页

作者：乔祖康熊俊龙金昕向莉郑如伊杜红根浙江中医药大学附属第一医院(浙江省中医院) 浙江杭州310003 浙江中医药大学第一临床医学院浙江杭州310053

总结介绍名中医沈景允治疗冻结肩的临床经验。沈景允认为阳气不足为冻结肩发病的主要病因。阳气温煦失常,则寒从中生、筋脉失养,经络循行不畅、气血凝滞,久之则挛急疼痛,进而导致肩关节筋骨失衡、屈伸不利为本病关键病机。治疗上首先着... 详细信息

总结介绍名中医沈景允治疗冻结肩的临床经验。沈景允认为阳气不足为冻结肩发病的主要病因。阳气温煦失常,则寒从中生、筋脉失养,经络循行不畅、气血凝滞,久之则挛急疼痛,进而导致肩关节筋骨失衡、屈伸不利为本病关键病机。治疗上首先着眼整体,重视阳气盛衰;其次重视局部,疏经通络;通过辨构论治,恢复肩关节筋骨平衡。采用独创二位分粘法结合推拿治疗冻结肩,术后配合八段锦导引功法防止再次粘连。简而言之,沈景允基于“阴阳为纲、经络为目、筋骨为轴”理论,以调和阴阳、治筋整骨、辨构论治为治疗原则,防、治、养结合,内外兼顾论治冻结肩,收效甚佳。

关键词：冻结肩二位分粘法沈景允

3D Hessian deconvolution of thick light-sheet z-stacks for high-contrast and high-SNR volumetric imaging

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Photonics Research 2020年第6期8卷 1011-1021页

作者： ZHE ZHANG DONGZHOU GOU FAN FENG ruyi zheng KE DU HONGRUN YANG GUANGYI ZHANG HUITAO ZHANG LOUIS TAO LIANGYI CHEN HENG MAO LMAM School of Mathematical SciencesPeking UniversityBejing 100871China State Key Laboratory of Membrane Biology Bejing Key Laboratory of Cardiometabolic Molecular MedicineInstitute of Molecular MedicinePeking UniversityBeijing 100871China Center for Bioinformatics National Laboratory of Protein Engineering and Plant Genetic EngineeringSchool of Life SciencesPeking UniversityBeijing 100871China School of Software and Microelectronics Peking UniversityBeijing 100871China Bejing Advanced Innovation Center for Imaging Theory and Technology Cepital Normal UniversityBeijing 100871China

Due to its ability of optical sectioning and low phototoxicity,z-stacking light-sheet microscopy has been the tool of choice for in vivo imaging of the zebrafish *** image the zebrafish brain with a large field of view,the thickness of the Gaussian beam inevitably becomes several times greater than the system depth of field(DOF),where the fluorescence distributions outside the DOF will also be collected,blurring the *** this paper,we propose a 3D deblurring method,aiming to redistribute the measured intensity of each pixel in a light-sheet image to in situ voxels by 3D *** introducing a Hessian regularization term to maintain the continuity of the neuron dis-tribution and using a modified stripe removal algorithm,the reconstructed z stack images exhibit high contrast and a high signal-to-noise *** performance characteristics can facilitate subsequent processing,such as 3D neuron registration,segmentation,and recognition.

关键词： Hessian image thick

Stabilization of heavy metals in sediments:A bioavailability-based assessment of carbon adsorbent efficacy using diffusive gradients in thin films

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Aquaculture and Fisheries 2021年第6期6卷 601-608页

作者： Yiqin Chen Yueyue Wang ruyi zheng Ju Wen Juan-Ying Li Qian Wang Jie Yin College of Marine Ecology and Environment Shanghai Ocean UniversityShanghai201306China

This study investigated the effectiveness of carbon adsorbents as remediation material for sediments contaminated with heavy metals and the feasibility of utilizing diffusive gradients in thin films(DGT)as a biomimetic tool to estimate the accumulation of heavy metals in Venerupis philippinaram(Manila clam).The results showed that carbon materials had significant inhibitory effects(14.0-53.0%)on the enrichment of heavy metals in organisms and the order of increasing overall inhibitory effect was:charcoal,peat,activated carbon,and *** were significant correlations(P<0.0001)between the four heavy metals accumulated in Venerupis philippinaram and those accumulated in DGT devices after 28 days in the *** concentrations of heavy metals enriched in DGT(5.4-42.0%)were less than accumulations in Venerupis *** results of in situ DGT applications showed significant correlations between the amount accumulated in DGT and the acid-soluble portion in sediments for both Cu and Pb,with positive linear correlations and R-squares of 0.97 and 0.92,*** results supported the notion that a DGT device can be used as a biomimetic tool that predicts and monitors the accumulation of heavy metals in aquaculture *** studies should focus on improving the stabilization of heavy metals in sediments using different types of carbon sorbents,as well as minimizing simulation deviations using DGT.

关键词： Carbon amendment sediment remediation DGT Venerupis philippinaram Heavy metals Bioavailability Bioaccumulation

Changes in peripheral perfusion index within 72h of life in a cohort of very low birth weight infants

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Chinese Medical Journal 2022年第10期135卷 1252-1254页

作者： Xiaojing Hu Conway Niu ruyi zheng Li Zhang Hongyan Chen Yun Cao Guoying Huang Neonatal Congenital Heart Disease Screening Office Children's Hospital of Fudan UniversityShanghai 201102China Department of Neonatology King Edward Memorial HospitalSubiacoPerthWestern Australia 6008Australia Department of Neonatology Children's Hospital of Fudan UniversityShanghai 201102China Department of Clinical Epidemiology and Clinical Trial Unit Children's Hospital of Fudan UniversityShanghai 201102China Shanghai Key Laboratory of Birth Defects Shanghai 201102China

To the Editor:The latest generation of pulse oximeters are equipped with technology allowing for monitoring of the peripheral perfusion index(PI),the percentage of the amount of light absorbed by pulsatile tissue(variable arterial blood flow)over non-pulsatile tissue(venous blood,muscle,and other tissues)at a wavelength of 940 nm as a signal.

关键词： index equipped weight