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Preparation,characterization and antioxidant activity analysis of three Maillard glycosylated bone collagen hydrolysates from chicken,porcine and bovine

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Food Science and Human Wellness 2024年第4期13卷 2002-2013页

作者： Liwei Qi Hongru zhang Yujie Guo Hong Liu chunhui zhang Key Laboratory of Agro-Products Processing Ministry of Agriculture and Rural AffairsInstitute of Food Science and TechnologyChinese Academy of Agricultural SciencesBeijing 100193China Laboratory of Biomass and Green Technologies University of Liege-Gembloux Agro-Bio TechPassage des déportés 2Gembloux B-5030Belgium

Bone collagen hydrolysates(peptides)derived from byproduct of animal product processing have been used to produce commercially valuable products due to their potential antioxidant *** glycosylated reaction is considered as a promising method to enhance the antioxidant activity of ***,this research aims at investigating the Maillard glycosylation activity and antioxidant activity of bone collagen hydrolysates from different *** this study,3 glycosylated bone collagen hydrolysates were prepared and characterized,and cytotoxicity and antioxidant activity were analyzed and *** free amino groups loss,browning intensity,and fluorescence intensity of G-Cbcp(glycosylated chicken bone collagen hydrolysates(peptides))were the heaviest,followed by G-Pbcp(glycosylated porcine bone collagen hydrolysates(peptides))and G-Bbcp(glycosylated bovine bone collagen hydrolysates(peptides)).The results of amino acid analysis showed that amino acid composition of different bone collagen hydrolysates was significantly different and the amino acid decreased to different degrees after Maillard glycosylated reaction,which may lead to differences in Maillard glycosylated reaction ***,the 3 glycosylated hydrolysates showed no significant *** results showed that glycosylation process significantly increased the antioxidant activity of bone collagen hydrolysates,and G-Cbcp showed the strongest antioxidant activity,followed by G-Pbcp and ***,compared with the bone collagen hydrolysates,3 glycosylated hydrolysates showed significant characteristic and structural changes,and higher antioxidant activity.

关键词： Bone collagen hydrolysates Glycosylation reaction Antioxidant activity

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Dynamic characteristics of nonlinear vibration isolator for gas turbine

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International Journal of Mechanical System Dynamics 2024年第3期4卷 374-383页

作者： Teng Wang Linhan Feng Lei zhang chunhui zhang Yue Wu Naval Research Institute BeijingChina

In this study,a theoretical model of the vibration isolation system of the gas turbine is developed and numerically solved.A simplified finite element(FE)model was also established to determine the response under the shock *** results of the FE model are used to verify the effectiveness of the theoretical model and the numerical *** influence of isolator stiffness,vibration isolator damping,and vibration isolator nonlinear stiffness coefficient on the shock response of the vibration isolation system is studied using the controlled-variable *** parameters(stiffness,damping,and nonlinear coefficient)enter into the shock resistance design of gas turbine vibration isolators.

关键词： gas turbine vibration isolator theoretical model damping dynamic characteristics

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Development of MoS_(2)-stainless steel catalyst by 3D printing for efficient destruction of organics via peroxymonosulfate activation

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Journal of Environmental Sciences 2024年第1期135卷 108-117页

作者： Yufeng Liu Jianhui Xu Xin Fu Pengxu Wang Dan Li Yunfei zhang Shenggui Chen chunhui zhang Peng Liu School of Environment and Civil Engineering Dongguan University of TechnologyDongguan 523808China School of Art and Design Guangzhou Panyu PolytechnicGuangzhou 511483China Dongguan Institute of Science and Technology Innovation Dongguan University of TechnologyDongguan 523808China School of Mechanical Engineering Dongguan University of TechnologyDongguan 523808China

Herein,a novel MoS_(2)-stainless steel composite material was first synthetized via a 3D printing method(3DP MoS_(2)-SS)for peroxymonosulfate(PMS)activation and organics *** with MoS_(2)-SS powder/PMS system(0.37 g/(m^(2)/min)),4.3-fold higher k_(FLO)/S_(BET)value was obtained in 3DP MoS_(2)-SS/PMS system(1.60 g/(m^(2)/min),resulting from the superior utilization of active *** observed that 3DP MoS_(2)-SS significantly outperformed the 3DP SS due to the enhanced electron transfer rate and increased active ***,Mo^(4+)facilitated the Fe^(2+)/Fe^(3+)cycle,resulting in the rapid degradation of florfenicol(FLO).Quenching experiments and electron paramagnetic resonance spectra indicated that·OH,SO_(4)·^(-),O_(2)·^(-)and^(1)O_(2)were involved in the degradation of *** effect of influencing factors on the degradation of FLO were evaluated,and the optimized degradation efficiency of 98.69%was achieved at 1 mM PMS and pH of *** degradation products were detected by UPLC/MS analyses and several possible degradation pathways were proposed to be the cleavage of C-N bonds,dechlorination,hydrolysis,defluorination and *** addition,3DP MoS_(2)-SS/PMS system also demonstrated superior degradation performance for 2-chlorophenol,acetaminophen,ibuprofen and *** study provided deep insights into the MoS_(2)-SS catalyst prepared by 3DP technology for PMS activation and FLO-polluted water treatment.

关键词： 3D printing Stainless steel MoS_(2) Peroxymonosulfate activation Degradation mechanism

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Automatically identifying imperfections and attacks in practical quantum key distribution systems via machine learning

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Science China(Information Sciences) 2024年第10期67卷 359-372页

作者： Jiaxin XU Xiao MA Jingyang LIU chunhui zhang Hongwei LI Xingyu ZHOU Qin WANG Institute of Quantum Information and Technology Nanjing University of Posts and Telecommunications Telecommunication and Networks National Engineering Research CenterNanjing University of Posts and Telecommunications Henan Key Laboratory of Quantum Information and Cryptography Strategic Support Force Information Engineering University

The realistic security of quantum key distribution(QKD) systems is currently a hot research topic in the field of quantum communications. There are always defects in practical devices, and eavesdroppers can make use of the security risk points of various devices to obtain key information. To date, current types of security analysis tend to analyze each security risk point individually, thereby posing great challenges for the overall security evaluation of QKD systems. In this paper, for the first time, we employ machine learning algorithms to identify the defects of different devices and certain attacks in real time, with an accuracy of 98%. It provides a novel solution for the practical security evaluation of QKD systems, thereby addressing the bottleneck problem of multiple risk points being difficult to address simultaneously in QKD systems,thus paving the way for the future large-scale application of quantum communication networks.

关键词： quantum key distribution device imperfections eavasdropping attacks real-time detection machine learning algorithms

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Research paper Air atmosphere available fast one-pot synthesis of VO_(2)nanoparticles with excellent thermochromic properties by a novel liquid-shielding method

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Journal of Materiomics 2024年第1期10卷 17-26页

作者： Zhi Cao Jin Li chunhui zhang Ke Jiao Yunxiang Chen Yifei Liu Xinghui Hou Haipeng Ji Liying zhang Shasha Yi Yu Wang zhang Chen Yanfeng Gao Zongtao zhang School of Materials Science and Engineering Zhengzhou UniversityKexue Ave 100Zhengzhou450001China School of Materials Science and Engineering Shanghai UniversityShangda Rd 99Shanghai200444China

As a typical strongly correlated transition oxide,vanadium dioxide(VO_(2))based nanomaterials have drawn many research attentions these years due to the giant metal-to-insulator phase transition(MIPT)at around 68℃.However,due to the complexities of the V-O system and interplays between various vanadium oxide phases,the synthesis of high-quality VO_(2)nanopowders is still fraught with many challenges,especially in air *** this paper,we report a novel air atmosphere available liquid-shielding synthesis method for thermochromic VO_(2)nanoparticles,by using low-eutectic molten-salt(LiCl-KCl)as the liquid-state air-insulation medium at elevated temperature and high-pressure pressed VOSO_(4)-KCl pillars immersed in these liquid salts as the *** amounts of glucose are added to introduce a slight reductive environment,and well dispersed VO_(2)nanoparticles with excellent ther-mochromic properties can be directly synthesized at an ultra-low temperature of 375℃.This feasible and atmosphere-available mass-production method is rarely reported in the related fields,which may provide a novel protocol strategy for the synthesis of high performance thermochromic VO_(2)and other functional oxide powders.

关键词： Vanadium dioxide Nanoparticle Molten salt Liquid shielding Thermochromic properties

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Product Development of High Strength and Toughness Spring Flat Steel

Frontiers of Metallurgical Industry

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Frontiers of Metallurgical Industry 2024年第1期2卷 15-18页

作者： Jianxin Wang chunhui zhang Manufacturing Management Department Xinjiang Bayi Iron&steel Co.Ltd.

With the continuous development of mechanical industry,higher requirements are put forward for the comprehensive properties of spring *** chemical composition and production process of spring flat steel are designed to meet the requirements of high strength and high toughness of spring flat steel,through the test,the product surface quality and internal quality all meet the national standards,the performance indicators to meet user requirements.

关键词： spring flat steel mechanical properties high strength high toughness

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Chemical biology investigation of a triple-action,smart-decomposition antimicrobial booster based-combination therapy against“ESKAPE”pathogens

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Science China Chemistry 2024年第9期67卷 3071-3082页

作者： Min Wang Huangsheng Pu Yangfan Xu Chenxuan Wu Yuanxin Gu Qingyun Cai Guoxing Yin Peng Yin chunhui zhang Wing-Leung Wong Muyang Wan Yugang Bai Xinxin Feng State Key Laboratory of Chem-/Bio-Sensing and Chemometrics Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biologyand School of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China College of Biology Hunan UniversityChangsha 410082China College of Advanced Interdisciplinary Studies&Hunan Provincial Key Laboratory of Novel Nano Optoelectronic Information Materials and Devices National University of Defense TechnologyChangsha 410073China Nanhu Laser Laboratory National University of Defense TechnologyChangsha 410073China Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research(Ministry of Education) College of Chemistry and Chemical EngineeringHunan Normal UniversityChangsha 410081China State Key Laboratory of Chemical Biology and Drug Discovery Department of Applied Biology and Chemical TechnologyThe Hong Kong Polytechnic UniversityHong Kong SAR 999077China Hunan Provincial Key Laboratory of Anti-Resistance Microbial Drugs The Third Hospital of Changsha(The Affiliated Changsha Hospital of Hunan University)Changsha 410015China

The global antibiotic resistance crisis necessitates urgent *** innovative approach involves potentiating antibiotics and non-antibiotic drugs with adjuvants or boosters.A major drawback of these membrane-active boosters is their limited biocompatibility,as they struggle to differentiate between prokaryotic and eukaryotic *** study reports the chemical biology investigation of a dual-action oligoamidine(OA1)booster with a glutathione-triggered decomposition ***1,when combined with other antimicrobial molecules,exhibits a triple-targeting mechanism including cell membrane disruption,DNA targeting,and intracellular enzyme *** multi-targeting mechanism not only enhances the in vitro and in vivo eradication of antibiotic-resistant“ESKAPE”pathogens,but also suppresses the development of bacterial ***,OA1 maintains its activity in bacterial cells by creating an oxidative environment,while it quickly decomposes in mammalian cells due to high glutathione *** mechanistic insights and design principles may provide a feasible approach to develop novel antimicrobial agents and effective anti-resistance combination therapies.

关键词： antimicrobial booster oligoamidine membrane disruption DNA targeting triggered degradation anti-resistance

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Research Progress of Drug Therapy for Diabetes

Expert Review of Chinese Medical

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Expert Review of Chinese Medical 2024年第1期2卷 6-9页

作者： Yuhang Li chunhui zhang Hui Gao Yunnan University of Economics and Management School of Medicine

Diabetes is mainly a series of symptoms of glucose metabolism disorder caused by relative or absolute insufficiencies of *** patients are accompanied by protein,fat,water and electrolyte disorders,including diabetes type 1 and diabetes type 2,of which diabetes type 2 accounts for more than 90%.The incidence rate of diabetes is high,the course of disease is long,and it is difficult to *** patients need long-term *** study analyzed the clinical manifestations and predisposing factors of diabetes,and explored the progress of drug treatment of diabetes,which is summarized as follows.

关键词： diabetes drug therapy research progress

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基于主元分析方法的公立医院财务预算信息化管理系统

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兵工自动化 2024年第4期43卷 46-49,76页

作者：张春晖中国航天科工集团七三一医院北京100074

公立医院财务预算信息化管理系统存在运行故障高,若不能准确划分数据类型,会导致系统出现运行故障,影响财务预算信息化管理效果。为此,提出基于主元分析法(principal component analysis,PCA)的公立医院财务预算信息化管理系统设计。设... 详细信息

公立医院财务预算信息化管理系统存在运行故障高,若不能准确划分数据类型,会导致系统出现运行故障,影响财务预算信息化管理效果。为此,提出基于主元分析法(principal component analysis,PCA)的公立医院财务预算信息化管理系统设计。设计公立医院财务预算信息化管理系统整体框架,分析财务预算信息化管理系统各项模块性能;通过PCA对财务数据进行分析,完成系统数据库设计,结合硬件模块具体功能设计软件程序实现流程;将设计的硬件与软件整合,完成公立医院财务预算信息化管理系统的设计。实验结果证明:通过所提方法设计的预算管理系统,在预算信息化管理时系统运行效果好。

关键词：数据分析公立医院财务预算信息化管理系统设计方法

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基于矿物元素指纹图谱对新疆皮山红羊真实性鉴别

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食品科学 2024年第4期45卷 300-306页

作者：赵莱昱张鸿儒王晶张春晖中国农业科学院农产品加工研究所北京100193 新疆畜牧科学院新疆乌鲁木齐830000

利用矿物元素与多元统计分析相结合的方法,对新疆皮山红羊进行真实性鉴别。以36只新疆皮山红羊与36只湖羊作为实验对象,利用电感耦合等离子质谱仪测定其背最长肌及半腱肌中51种矿物元素。结果表明,皮山红羊肌肉中矿物元素表现出明显的... 详细信息

利用矿物元素与多元统计分析相结合的方法,对新疆皮山红羊进行真实性鉴别。以36只新疆皮山红羊与36只湖羊作为实验对象,利用电感耦合等离子质谱仪测定其背最长肌及半腱肌中51种矿物元素。结果表明,皮山红羊肌肉中矿物元素表现出明显的指纹特征,以稀有元素为主。以矿物元素为基础构建了线性判别分析模型,结果显示,矿物元素对皮山红羊的判别效果较好,且在背最长肌中的判别效果更显著,品种和肌肉部位判别模型准确率分别为100%和99.29%。La、Zn、Cs、Sn、Ho、Fe、Rh、Co、Se、Te、Mo、Al、Sb 13种矿物元素可作为鉴别皮山红羊的主要矿物元素,其中,Rh、Te、Ho元素对皮山红羊的鉴别贡献度最高,且这3种元素仅在红羊肌肉中检出,因此可作为鉴别皮山红羊的关键矿物标志物。特征元素的累积与地域特征有关。

关键词：皮山红羊矿物元素判别分析真实性

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