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智能健康厨具的设计研究

鞋类工艺与设计 2024年第10期4卷 134-136页

作者：孙鸿业潘宣羽廖雨婷大连工业大学艺术与信息工程学院辽宁庄河116400

随着科技的发展和人们生活水平的提高,健康饮食越来越受到人们的重视。智能健康厨具作为一种新兴的厨具产品,它结合了现代信息技术和传统厨具设计,能够帮助用户更好地控制饮食健康,是实现健康生活方式的重要工具。当前,智能健康厨具市... 详细信息

随着科技的发展和人们生活水平的提高,健康饮食越来越受到人们的重视。智能健康厨具作为一种新兴的厨具产品,它结合了现代信息技术和传统厨具设计,能够帮助用户更好地控制饮食健康,是实现健康生活方式的重要工具。当前,智能健康厨具市场潜力巨大,创新设计对于满足消费者多样化需求具有重要意义,因此本文将研究重点放在对智能健康厨具的设计研究之上,从设计原则和方法出发,提出相关设计策略,为智能健康厨具的设计提供思路,推动智能健康厨具市场的发展。

关键词：智能厨具健康厨具厨具设计

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大豆磷脂酶D的固定化及其催化功能

安徽科技学院学报 2024年第1期38卷 77-87页

作者：孙红叶朱梦男姚改芳张华金日生合肥工业大学食品与生物工程学院安徽合肥230009

目的:单因素试验研究大豆磷脂酶D(phospholipase D,PLD)的固定化工艺以及固定化PLD催化合成大豆磷脂酰丝氨酸(phosphatidylserine,PS)的最佳工艺。方法:首先通过非极性溶剂辅助Stober法制备纳米级介孔二氧化硅作为固定化酶的载体,通过吸... 详细信息

目的:单因素试验研究大豆磷脂酶D(phospholipase D,PLD)的固定化工艺以及固定化PLD催化合成大豆磷脂酰丝氨酸(phosphatidylserine,PS)的最佳工艺。方法:首先通过非极性溶剂辅助Stober法制备纳米级介孔二氧化硅作为固定化酶的载体,通过吸附-沉淀-交联方式将PLD固定,单因素试验优化固定化条件,并对固定化后的PLD进行结构表征和热稳定性及贮存稳定性研究;然后利用固定化PLD以大豆卵磷脂和L-丝氨酸为底物催化合成PS,并通过单因素试验确定最佳合成工艺;最后对固定化PLD的循环使用性能进行研究。结果:非极性溶剂辅助Stober法制备的介孔二氧化硅BET比表面积为948 m^(2)/g,气孔体积为1.35 cm^(3)/g,孔径为8.20 nm,平均粒径为335.10 nm,扫描电镜确定载体的形貌为近球形结构;当加入5.00 mL乙醇、1.00 mL酶液(温度为35℃、pH为6.50)、0.40 mL戊二醛时,固定化PLD的相对酶活达到最大值(88.39%±1.00%),蛋白固定化率为80.76%±1.30%;70℃时游离PLD的相对酶活剩余15.30%,而固定化PLD的相对酶活仍然有66.40%,且游离PLD被固定化后半衰期由20 d延长到50 d;当乙酸乙酯与乙酸钠/醋酸缓冲溶液的比为6∶1,卵磷脂与L-丝氨酸的质量比为1∶8,反应温度为40℃,pH为6.50,固定化PLD的加入量为40%,反应时间为12 h时,PS的产率达86.60%±1.40%,纯度为90.30%,且固定化PLD循环使用7次PS的产率仍有61.70%±1.60%,而游离PLD循环使用4次PS的产率只剩余21.60%±1.80%。结论:介孔二氧化硅固定化PLD的稳定性、催化性能均显著提高,实现了PLD的回收重复使用,降低了生产成本;同时为PS的固定化酶法工业化生产提供技术支持。

关键词：大豆磷脂酶D 固定化酶转磷脂酰化反应大豆磷脂酰丝氨酸

Microstructure and Mechanical Properties of Wire + Arc Additively Manufactured 2050 Al–Li Alloy Wall Deposits

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Chinese Journal of Mechanical Engineering 2019年第6期32卷 174-180页

作者： Hao Zhong Bojin Qi Baoqiang Cong Zewu Qi hongye sun School of Mechanical Engineering and Automation Beihang UniversityBeijing 100191China MIIT Key Laboratory of Aeronautics Intelligent Manufacturing Beijing 100191China

Aluminum–Lithium(Al–Li) alloy is a topic of great interest owing to its high strength and light weight, but there are only a few applications of Al–Li alloy in wire ss, a special AA2050 Al–Li alloy + arc additive manufacturing(WAAM) process. To identify its feasibility in WAAM procewire was produced and employed in the production of straight-walled components, using a WAAM system based on variable polarity gas tungsten arc welding(VP-GTAW) process. The influence of post-deposited heat treatment on the microstructure and property of the deposit was investigated using optical micrographs(OM), scanning electron microscopy(SEM), X-ray diffraction(XRD), hardness and tensile properties tests. Results revealed that the microstructures of AA2050 aluminum deposits varied with their location layers. The upper layers consisted of fine equiaxed grains, while the bottom layer exhibited a coarse columnar structure. Mechanical properties witnessed a significant improvement after post-deposited heat treatment, with the average micro-hardness reaching 141 HV and the ultimate tensile strength exceeding 400 MPa. Fracture morphology exhibited a typical ductile fracture.

关键词： Aluminum-copper-lithium alloy Wire arc additive manufacturing Heat treatment Mechanical properties

Detection of Oscillations in Process Control Loops From Visual Image Space Using Deep Convolutional Networks

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IEEE/CAA Journal of Automatica Sinica 2024年第4期11卷 982-995页

作者： Tao Wang Qiming Chen Xun Lang Lei Xie Peng Li hongye Su the Department of Electronic Engineering the School of InformationYunnan UniversityKunming 650091China DAMO Academy Alibaba GroupHangzhou 311100China the State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and ControlZhejiang UniversityHangzhou 310027China

Oscillation detection has been a hot research topic in industries due to the high incidence of oscillation loops and their negative impact on plant *** numerous automatic detection techniques have been proposed,most of them can only address part of the practical *** oscillation is heuristically defined as a visually apparent periodic ***,manual visual inspection is labor-intensive and prone to missed *** neural networks(CNNs),inspired by animal visual systems,have been raised with powerful feature extraction *** this work,an exploration of the typical CNN models for visual oscillation detection is ***,we tested MobileNet-V1,ShuffleNet-V2,Efficient Net-B0,and GhostNet models,and found that such a visual framework is well-suited for oscillation *** feasibility and validity of this framework are verified utilizing extensive numerical and industrial *** with state-of-theart oscillation detectors,the suggested framework is more straightforward and more robust to noise and *** addition,this framework generalizes well and is capable of handling features that are not present in the training data,such as multiple oscillations and outliers.

关键词： Convolutional neural networks(CNNs) deep learning image processing oscillation detection process industries

A systematic COSMO-RS study on mutual solubility of ionic liquids and C6-hydrocarbons

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Green Chemical Engineering 2024年第1期5卷 97-107页

作者： Chuxin Qi Zhen Song hongye Cheng Lifang Chen Zhiwen Qi State Key Laboratory of Chemical Engineering School of Chemical EngineeringEast China University of Science and Technology130 Meilong RoadShanghai200237China

When considering the usage of ionic liquids(ILs)for reactions and separations involving non-polar or weak-polar hydrocarbons,the knowledge of the mutual solubility behaviors of ILs and hydrocarbons is of the utmost *** this work,taking four typical C6-hydrocarbons namely benzene,cyclohexene,cyclohexane,and hexane as representatives,the mutual solubility of ILs and non-polar or weak-polar hydrocarbons are systematically studied based on the COSMO-RS *** reliability of COSMO-RS for these systems is first evaluated by comparing experimental and predicted hydrocarbon-in-IL activity coefficient at infinite dilution and binary/ternary liquid-liquid equilibria of related ***,the mutual solubility of the four hydrocarbons and13,650 ILs(composed by 210 cations and 65 anions)are *** effect of different IL structural characteristics including alkyl chain length,cation family/symmetry/functional group,and anion on the IL-hydrocarbon mutual solubility behaviors are further analyzed by the analyses of interaction energy and screen charge *** mutual solubility databases and the structural effects identified thereon could provide useful guidance for IL selection in related applications.

关键词： C6-hydrocarbons Ionic liquids Mutual solubility COSMO-RS Structural effect analysis

Remediation of di(2-ethylhexyl)phthalate(DEHP)contaminated black soil by freeze-thaw aging biochar

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Journal of Environmental Sciences 2024年第1期135卷 681-692页

作者： Lei Wang Zeyu Dou Chaoran Ma Xiaochen Jia hongye Wang Wenjing Bao Lei Wang Jianhua Qu Ying Zhang School of Resources and Environment Northeast Agricultural UniversityHarbin 150030China

Di(2-ethylhexyl)phthalate(DEHP),a complex structure with high toxicity,is a common organic *** study investigated the effects of fresh biochar(FBC),and freeze-thaw cycled aged biochar(FTC-BC)on DEHP-contaminated soils using a pot *** specific surface area of FBC increased from 145.20 to 303.50 m~2/g,and oxygen-containing functional groups increased from 1.26 to 1.48 mol/g after freeze-thaw cycles,greatly enhancing the adsorption of DEHP by biochar in the *** comprehensive radar chart evaluation showed that FBC and FTC-BC reduced DEHP growth stress and improved the soil *** with FBC,FTC-BC performed better in protecting the normal growth of pakchoi and improving soil *** addition,the application of biochar increased the diversity and abundance of bacteria in the DEHP-contaminated soil and changed the composition of the soil bacterial *** partial least squares path model(PLS-PM)showed that adding biochar as a soil remediation agent significantly positively impacted soil nutrients and indirectly reduced the DEHP levels in soil and plants by increasing soil microbial *** with FBC,FTC-BC creates a more satisfactory living environment for microorganisms and has a better effect on the degradation of DEHP in the *** study provides a theoretical basis for future biochar remediation of DEHP-contaminated soils in cold high-latitude regions.

关键词： DEHP Freeze-thaw cycles Biochar Soil restoration

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水管理视野下的莆田平原空间和社会结构探析

城市规划 2024年第8期48卷 114-124页

作者：李岚彬孙瑾璐郭巍魏红叶福州城建设计研究院有限公司北京林业大学园林学院

莆田平原是典型的水管理主导的人居环境地理单元，具有圩区和灌区的双重特征，然而迄今规划学科鲜有关注其水利特征与传统人居环境关系的研究成果。首先，从水文角度梳理了莆田平原各个时期的历史沿革；其次，从自然基底、水利系统与聚... 详细信息

莆田平原是典型的水管理主导的人居环境地理单元，具有圩区和灌区的双重特征，然而迄今规划学科鲜有关注其水利特征与传统人居环境关系的研究成果。首先，从水文角度梳理了莆田平原各个时期的历史沿革；其次，从自然基底、水利系统与聚落系统三方面分析快速城镇化之前的莆田平原的空间布局，总结其形态特征；然后，着重剖析由灌区分水和圩区防洪而衍生的水管理模式，这很大程度上形成了以仪式联盟为核心的社会结构，并通过仪式事件增加社区凝聚力。这种清晰的水利空间和社会结构的相互关系为理解类似地区的传统人居结构及当代转型发展提供了重要借鉴。

关键词：传统人居环境灌区和圩区水管理社会结构莆田平原

Synergistically constructed lamination-like network of redox-active polyimide and MXene via π-π interactions for aqueous NH_(4)^(+) storage

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Chinese Journal of Chemical Engineering 2024年第7期71卷 217-224页

作者： Jing He hongye Xuan Jing Jin Ke Yu Changyao Liyang Lintong Hu Minjie Shi Chao Yan School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China Jiangsu New Yangzi Shipbuilding Co. LtdJingjiang 214532China

As a nonmetallic charge carrier,ammonium ion(NH_(4)^(+))has garnered significant attention in the construction of aqueous batteries due to its advantages of low molar mass,small hydration size and rapid diffusion in aqueous *** are a kind of potential electro-active materials for aqueous NH_(4)^(+)***,traditional polymer electrodes are typically created by covering the bulky collectors with excessive additives,which could lead to low volume capacity and unsatisfactory ***,a nanoparticle-like polyimide(PI)was synthesized and then combined with MXene nanosheets to synergistically construct an additive-free and self-standing PI@MXene composite ***,the redox-active PI nanoparticles are enclosed between conductive MXene flakes to create a 3D lamination-like network that promotes electron transmission,while theπ-πinteractions existing between PI and MXene contribute to the enhanced structural integrity and stability within the composite *** such,it delivers superior aqueous NH_(4)^(+)storage behaviors in terms of a notable specific capacity of 110.7 mA·h·cm^(–3) and a long lifespan with only 0.0064%drop each ***,in-situ Raman and UV–Vis examinations provide evidence of reversible and stable redox mechanism of the PI@MXene composite electrode during NH_(4)^(+)uptake/removal,highlighting its significance in the area of electrochemical energy storage.

关键词： Synergetic coupling Composite materials Polyimide Energy storage Aqueous ammonium ion batteries

Gas sensors based on metal-organic frameworks:Challenges and opportunities

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