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Progress in the preparation,identification and biological activity of walnut peptides

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未来食品学报(英文) 2024年第3期4卷 205-220页

作者： Chang Liu Zijie Zhang yuting shang Siting Li Junxi Xia Yiling Tian Yingmin Jia Aijin Ma School of Food and Health Beijing Technology and Business UniversityBeijing 100048China Hebei Yangyuan ZhiHui Beverage Co. Ltd.Hengshui 053000China Institution of Chinese Walnut Industry Hengshui 053000China Hebei Key Laboratory of Walnut Nutritional Function and Processing Technology Hengshui 053000China College of Food Science and Technology Hebei Agricultural UniversityBaoding 071000China

Walnuts are rich in protein and are a high-quality plant protein *** recent years,with the growth of consumer demand for functional food and food for special medical purpose,the use of walnut protein for the preparation of functional walnut peptide ingredients or additives and other compositions has received increasing ***,the improvement of the yield of walnut peptides and the clarification of their functional activities are the bottlenecks that limit the development of these *** this end,this article reviews the pretreatment,preparation,purification and identification processes of walnut peptides,as well as their biological activities such as antioxidant activity,antitumour activity,improvement of memory,antihypertension and regulation of metabolic disorders are elaborated to provide a reference for the industrial development of walnut peptides.

关键词： Walnut Peptide Extraction Isolation Purification Identification Biological activity

Differential response of radial growth and δ^(13)C in Qinghai spruce(Picea crassifolia) to climate change on the southern and northern slopes of the Qilian Mountains in Northwest China

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Journal of Forestry Research 2024年第3期35卷 205-218页

作者： Li Qin Huaming shang Weiping Liu yuting Fan Kexiang Liu Tongwen Zhang Ruibo Zhang Key Laboratory of Tree-Ring Physical and Chemical Research(CMA)/Xinjiang Key Laboratory of Tree-Ring Ecology Institute of Desert MeteorologyChina Meteorological AdministrationUrimqi 830002People's Republicof China Xinjiang Meteorological Information Center Urimqi 830002People's Republic of China

Tree radial growth can have significantly differ-ent responses to climate change depending on the *** elucidate the effects of climate on radial growth and stable carbon isotope(δ^(13)C)fractionation of Qing-hai spruce(Picea crassifolia),a widely distributed native conifer in northwestern China in different environments,we developed chronologies for tree-ring widths and δ^(13)C in trees on the southern and northern slopes of the Qilian Mountains,and analysed the relationship between these tree-ring variables and major climatic ***-ring widths were strongly influenced by climatic factors early in the growing season,and the radial growth in trees on the northern slopes was more sensitive to climate than in trees on the ***-ring δ^(13)C was more sensitive to climate than radial growth.δ^(13)C fractionation was mainly influenced by summer temperature and precipitation early in the growing *** conductance more strongly limited stable carbon isotope fractionation in tree rings than photosynthetic rate *** response between tree rings and climate in mountains gradually weakened as climate *** in radial growth and stable carbon isotope fractionation of *** in response to climate in the Qilian Mountains may be further complicated by continued climate change.

关键词： Tree rings Qinghai spruce(Picea crassifolia Kom.) Stable carbon isotope(δ^(13)C) Qilian Mountains:Climate change

Quantum Dot Nanobeads-Labelled Lateral Flow Immunoassay Strip for Rapid and Sensitive Detection of Salmonella Typhimurium Based on Strand Displacement Loop-Mediated Isothermal Amplification

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Engineering 2022年第12期19卷 62-70页

作者： yuting shang Shuzhen Cai Qinghua Ye Qingping Wu Yanna Shao Xiaoying Qu Xinran Xiang Baoqing Zhou Yu Ding Moutong Chen Liang Xue Honghui Zhu Jumei Zhang Guangdong Provincial Key Laboratory of Microbial Safety and Health&State Key Laboratory of Applied Microbiology Southern China&Institute of Microbiology Guangdong Academy of SciencesGuangzhou 510070China State Key Laboratory of Food Science and Technology&National Engineering Research Center for Functional Foods&Synergetic Innovation Center of Food Safety&Joint International Research Laboratory on Food Safety School of Food Science and TechnologyJiangnan UniversityWuxi 214122China

Rapid,sensitive,point-of-care detection of pathogenic bacteria is important for food *** this study,we developed a novel quantum dot nanobeads-labelled lateral flow immunoassay strip(QBs-labelled LFIAS)combined with strand displacement loop-mediated isothermal amplification(SD-LAMP)for quantitative Salmonella Typhimurium(ST)*** dot nanobeads(QBs)served as fluorescence reporters,providing good detection *** customizable strand displacement(SD)probe was used in LAMP to improve the specificity of the method and prevent by-product *** was based on a sandwich immunoassay.A fluorescence strip reader measured the fluorescence intensity(FI)of the test(T)line and control(C)*** linear detection range of the strip was 10^(2)–10^(8) colony forming units(CFU)·mL^(-1).The visual limit of detection was 10^(3) CFU·mL^(-1),indicating that the system was ten-fold more sensitive than AuNPs-labelled test *** specificity was analyzed in accordance with agarose gel outputs of polymerase chain reaction(PCR)and *** detected ST in foods with an acceptable recovery of 85%–110%.The method is rapid,simple,almost equipment-free,and suitable for bacterial detection in foods and for clinical diagnosis.

关键词： Salmonella Typhimurium Quantum dot nanobeads Lateral flow immunoassay strip Loop-mediated isothermal amplification Strand displacement probe

Composition characterization and transformation mechanism of dissolved organic phosphorus in wastewater treatment using 31P NMR spectroscopy

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Frontiers of Environmental Science & Engineering 2024年第3期18卷 103-113页

作者： yuting Zhang Wei shang SoonThiam Khu Xingcan Zheng Yongli Sun Pengfeng Li Miao Gu Wen-an Zhang Huanmei Ma National Engineering Research Center For Urban Water&Wastewater North China Municipal Engineering Design&Research Institute Co.Ltd.Tianjin 300381China School of Environment Science&Engineering Tianjin UniversityTianjin 300350China

The migration and transformation of phosphorus components in wastewater treatment plants(WWTPs)play a crucial role in the convergence and circulation of ***,the composition and variation of dissolved organic phosphorus(DOP)in WWTPs were unclear because of its complex nature,hindering its efficient *** this study,the DOP species and their transformation during the treatment process in WWTP were comprehensively ***,two enrichment methods were assessed for their effectiveness at facilitating wastewater analysis:lyophilization and aluminum salt *** salt precipitation was found to be better because its application allowed 31P nuclear magnetic resonance(31P NMR)spectroscopy to identify more species in the secondary effluent:orthophosphate(Ortho-P)(81.1%–89.3%of the dissolved total phosphorus),pyrophosphates(Pyro-P)(0%–2.3%),orthophosphate monoesters(Mono-P)(7.0%–10.77%),orthophosphate diesters(Di-P)(1.0%–2.96%),and phosphonate(Phos-P)(1.7%–5.16%).Furthermore,the variation and transformation mechanism of phosphorus,particularly those of DOP,during the entire sewage-treatment process were *** the treatment steps,biological treatment combined tertiary treatment achieved better DOP removal ***,biological treatment mainly removed Mono-P and Di-P with removal efficiencies of 33.3%and 41.7%compared with the effluent of the grit ***-P has higher bioavailability and is more easily converted and utilized by microorganisms than ***,Phos-P,with low bioavailability,was hardly utilized by microorganisms,which showed only 18.4%removal efficiency in biological *** tertiary treatment,coagulation process exhibited higher removal ability of Ortho-P(69.1%)and partial removal efficiencies of DOP,resulting in an increase in the DOP proportion in *** addition,Phos-P could not be effectively removed through the biological treatment and was only partially reduced via the adsorption pro

关键词： Municipal wastewater Dissolved organic phosphorus Composition Transformation 31P nuclear magnetic resonance

On challenges of AI to cognitive security and safety

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Security and Safety 2023年第2期2卷 44-56页

作者： Ruiyang Huang Xiaoqing Zheng yuting shang Xiangyang Xue National Digital Switching System Engineering&Technological R&D Center Zhengzhou 450002China Fudan University Shanghai 200433China

Recent advances in deep learning have led to disruptive breakthroughs in artificial intelligence(AI),fueling the jump in ChatGPT-like large language models(LLMs).As with any emerging technology,it is a two-sided coin,bringing not only vast social impacts but also significant security concerns,especially in the socio-cognitive *** this back-ground,this work starts with an inherent mechanism analysis of cognitive domain games,from which it proceeds to explore the security concerns facing the cognitive domain as well as to analyze the formation mechanisms of a cognitive immune ***,inspired by behavioral mimicry in biology,this work will elaborate on new approaches to cognitive security from three aspects:Mimicry Computing,Mimicry Defense,and Mimicry Intelligence.

关键词： Cognitive security Artificial intelligence Endogenous safety and security Mimicry intelligence

Design of an improved robust H∞ controller for active suspension with input delays

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Design of an improved robust H∞ controller for active suspe...

高温、高湿条件下模拟仓储小麦品质与微生物群落结构的变化

第37届中国控制会议

作者： Hui Pang yuting shang Xue Liu School of Mechanical and Precision Instrument Engineering Xi’an University of Technology

This paper proposes an improved robust H output-feedback controller design for vehicle active suspension system with input time-delay. By establishing a multi-objective control optimization problem, in which body acceleration is taken as the control objective, and suspension dynamic deflection, tire dynamic load and the actuator maximum control force are formulated as the constraints performance indexes in terms of linear matrix inequality. Afterwards, the robust H controller design with input delay is transformed into a delay-free system through Lyapunov stability theory and integral term transformation method. A numerical simulation investigation is presented to show that the proposed controller can achieve a good suspension performance under both random and bump road surfaces in the presence of input time-delay.

关键词： Active suspension system(ASS) input time-delay output-feedback control H∞ control

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中国食品学报 2022年第4期22卷 265-275页

作者：尚玉婷杨薇张民天津农学院食品科学与生物工程学院天津300392 天津农学院基础科学学院天津300392

研究小麦从入库储藏到发现菌丝体过程中,其品质和微生物群落结构的变化趋势。以天津市实仓储藏的硬质白小麦籽粒为研究对象,以三角瓶为储藏容器,分别在30℃、60%RH,40℃、80%RH条件下对小麦进行模拟仓储,储藏时间为0~120 d。通过监测小... 详细信息

研究小麦从入库储藏到发现菌丝体过程中,其品质和微生物群落结构的变化趋势。以天津市实仓储藏的硬质白小麦籽粒为研究对象,以三角瓶为储藏容器,分别在30℃、60%RH,40℃、80%RH条件下对小麦进行模拟仓储,储藏时间为0~120 d。通过监测小麦籽粒的水分、色差、蛋白质、脂肪、淀粉、脂肪酸等品质指标变化,以及霉菌总数、高通量测序结果评估模拟粮库中小麦在不同储藏阶段的品质与真菌群落结构变化。结果表明,在30℃、60%RH条件下,储藏120 d内,小麦品质呈缓慢下降趋势,80~120 d曲霉属相对丰度迅速增加。在40℃、80%RH条件下,小麦品质劣变更快,在60 d时曲霉属相对丰度达100%,小麦产生可见菌丝体。研究表明随着储藏温度与相对湿度的升高,小麦品质变化速度明显加快,菌丝体产生速度加快。

关键词：小麦模拟仓储高通量测序品质变化

基于AM5728的动态产品姿态获取系统设计与实现

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计算机应用与软件 2023年第2期40卷 112-117页

作者：尚玉廷广州番禺职业技术学院智能制造学院广东广州511487 珠海格力电器股份有限公司珠海格力智能装备有限公司广东珠海519000

为了能够实现智能化柔性生产,需要实时获取动态流水线上产品摆放姿态,并根据产品摆放姿态实时调整机构姿态控制机器人等执行机构以设计好的路径执行相应动作,故设计了动态产品姿态获取系统。基于AM5728控制器设计控制系统硬件平台并进... 详细信息

为了能够实现智能化柔性生产,需要实时获取动态流水线上产品摆放姿态,并根据产品摆放姿态实时调整机构姿态控制机器人等执行机构以设计好的路径执行相应动作,故设计了动态产品姿态获取系统。基于AM5728控制器设计控制系统硬件平台并进行实际测试研究,采用图像增强处理、形态学等给出一种外轮廓精确快速提取算法。在不接触产品任意外观面的前提下实时获取动态流水线上产品摆放姿态,为实现后续的智能化柔性生产提供技术基础和理论支撑。

关键词：动态流水线产品摆放姿态图像处理 AM5728

High pressure phase boundaries of AgNbO_(3)

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Journal of Materiomics 2024年第2期10卷 431-439页

作者： Kai Dai Anyang Cui Yafang Li Zhen Liu yuting Yan Kai Jiang Jinzhong Zhang Liyan shang Liangqing Zhu Yawei Li Genshui Wang Zhigao Hu Technical Center for Multifunctional Magneto-Optical Spectroscopy(shanghai) Engineering Research Center of Nanophotonics&Advanced Instrument(Ministry of Education)Department of PhysicsSchool of Physics and Electronic ScienceEast China Normal UniversityShanghai200241China Key Laboratory of Optoelectronic Material and Device Department of PhysicsShanghai Normal UniversityShanghai200234China Chongqing Key Laboratory of Precision Optics Chongqing Institute of East China Normal UniversityChongqing401120China Key Laboratory of Inorganic Functional Materials and Devices Shanghai Institute of CeramicsChinese Academy of SciencesShanghai200050China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuanShanxi030006China

The external pressure is one of the essential parameters for regulating the structure and energy con-version properties of antiferroelectric AgNbO_(3).For pure AgNbO_(3),however,there has been still a blank of its real lattice structure under the stress ***,high-pressure lattice structures and phase transitions of AgNbO_(3)have been explored by spectroscopic experiments and theoretical models.A successive phase transition process from Pbcm to C222_(1) to P2_(1) has been observed at the pressure range of 0-30 GPa,associated with displacive-type characterized by soft-mode *** that the paraelectric phase cannot be achieved under high-pressure at room ***,the competition of long-range Coulomb force,short-range interatomic interaction,and covalent interaction in AgNbO_(3)lattice were demonstrated under the stress *** present work can provide fundamental guidelines to reveal the high-pressure phase transitions of AgNbO_(3),which will open up possibilities for the designing device with functional properties at extremes.

关键词： temperature. field. phase