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基于主成分与聚类分析的新疆伊犁地区馕特征品质评价

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食品工业科技 2024年第4期45卷 261-266页

作者：赵志霞邹淑萍康峰新疆农业科学院农产品贮藏加工研究所新疆乌鲁木齐830091 新疆主要农副产品精深加工工程技术研究中心新疆乌鲁木齐830091

为研究新疆伊犁地区不同种类馕的品质特性,本文选取伊犁地区55个市售馕样品,对其进行了13项品质指标(重量、横径、高度、水分含量、水分活度、L^(*)、a^(*)、b^(*)、硬度、内聚性、弹性、胶粘性、咀嚼性)的测定,采用主成分分析和聚类分... 详细信息

为研究新疆伊犁地区不同种类馕的品质特性,本文选取伊犁地区55个市售馕样品,对其进行了13项品质指标(重量、横径、高度、水分含量、水分活度、L^(*)、a^(*)、b^(*)、硬度、内聚性、弹性、胶粘性、咀嚼性)的测定,采用主成分分析和聚类分析方法,筛选出馕品质评价的主要指标并对馕样品进行了分类,结合感官品质对不同种类馕进行了综合评价。结果表明,55份馕样品的13项品质指标间存在一定的相关性,其中高度与水分含量、水分活度、弹性、咀嚼性呈极显著相关(P<0.01),L^(*)值与胶粘性呈显著相关(P<0.05);主成分分析法提取出3个主成分因子,累积方差贡献率达到76.856%,根据聚类分析结果得到,弹性、咀嚼性、胶粘性、硬度、L^(*)值、b^(*)值可作为评价馕品质的6项关键指标,基于以上结果,将55份馕划分为三大类,分别为大薄馕、窝窝馕、休闲馕;结合感官品质分析得出,三大类馕品质间存在显著差异(P<0.05),其中大薄馕色泽、风味、硬度评分最高,为14.85、13.52、14.37分,具有色泽金黄、香味浓郁的特点。窝窝馕弹性和咀嚼性评分最高,为14.82、14.54分,表明其富有弹性和咀嚼性。休闲馕酥脆性评分最高为14.47分,表明此类馕品尝时具有酥脆的口感。本研究明确了馕品质评价的关键指标并探明了新疆伊犁地区三大类馕的品质特性,提供了馕科学的分类方法,为新疆馕品质评价体系的构建奠定理论依据。

关键词：新疆馕主成分分析聚类分析感官分析品质评价

基于LNG接收站冷量的冷库系统设计及经济分析

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低温与超导 2018年第10期46卷 19-24页

作者：汪乘红陈叔平杨发禄姚淑婷金树峰陈鸿乔赵一力兰州理工大学石油化工学院兰州730050 中国石油玉门油田分公司酒泉735009

LNG蕴含丰富的冷能,在接收站这部分冷量通常经汽化器被海水或空气带走,既浪费能源,又污染周围环境。以某小型LNG接收站为例,从能量梯级利用的角度出发,设计了一种以丙烷为中间介质、体积分数57. 8%乙二醇水溶液为载冷剂的利用LNG冷能的... 详细信息

LNG蕴含丰富的冷能,在接收站这部分冷量通常经汽化器被海水或空气带走,既浪费能源,又污染周围环境。以某小型LNG接收站为例,从能量梯级利用的角度出发,设计了一种以丙烷为中间介质、体积分数57. 8%乙二醇水溶液为载冷剂的利用LNG冷能的新型冷库系统,运用Aspen Plus软件对其流程进行模拟,获得了各流股的流量、温度和等参数,并根据得到的数据对系统做了热力和经济性分析。结果表明:对于供气规模1700m^3/h、供气压力0. 4MPa的LNG供气系统,每天约回收冷量12265. 34MJ,可同时满足面积为30m^2的低温冷库(-23～-30℃)、30m^2的中温冷库(-15～-20℃)和120m2的高温冷库(0～2℃)的需求;系统COP和效率分别为1. 79和78. 04%; LNG与丙烷换热器损最大,约占系统总损的74. 5%;所设计的冷库系统年净收益约31. 02万元,经4.06年可收回成本,将LNG冷能用作冷库冷源是可行的,具有较好的经济效益。

关键词：液化天然气冷量利用 (火用) 冷库

Research Progress of Detection Methods for Microplastics

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Asian Agricultural Research 2024年第3期16卷 29-32页

作者： Peng WAN Zhen zhao Guoyan WEN Yunshuang FU Cuizhi LI Xiaoli WU Inner Mongolia yili Industrial Group Co. Ltd.Hohhot 010010China

Microplastics are plastic particles or fibers with a diameter of less than 5 mm,and they widely exist in the environment and pose potential risks to the ecosystem and human *** detection can provide basic data for formulating effective environmental protection *** this paper,the physical,chemical and biological detection methods of microplastics are reviewed,and the advantages and disadvantages of different methods are *** problems and challenges encountered in microplastics detection are analyzed,and the future research is discussed.

关键词： Microplastics Detection method Research progress

Research Progress of Microplastics Pollution in Environment

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Asian Agricultural Research 2024年第4期16卷 19-22页

作者： Peng WAN Zhen zhao Guoyan WEN Yunshuang FU Cuizhi LI Xiaoli WU Inner Mongolia yili Industrial Group Co. Ltd.Hohhot 010010China

Microplastics pollution has become one of the focuses of global environmental science *** include micro plastic particles and nano-plastic particles,which come from the decomposition of plastic products,the release of microfibers and the industrial process of plastic *** distribution of microplastics in water,soil and atmosphere is summarized,and the widespread existence of microplastics in different environmental media is *** paper also summarizes the potential impact of microplastics on ecosystems and organisms,and pays attention to the transmission and accumulation of microplastics in the food chain,as well as its potential threat to human ***,the paper discusses the methods and technologies of microplastics treatment and monitoring at present,and puts forward the direction of further research on microplastics pollution in order to formulate more effective management and mitigation strategies.

关键词： Microplastics Environment Pollution

Prophylactic treatment of Lacticaseibacillus paracasei K56 ameliorates asthma by regulating short-chain fatty acid production and Treg differentiation

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Food Science and Human Wellness 2024年

作者： Jiaqi Cui Yanfei Hong Wei-Hsien Liu Wen zhao Xinmei Nan Xuekai Shang Yalan Li Haotian Feng Qiuyue Jiang Weilian Hung Guiying Peng Inner Mongolia yili Industrial Group Co. Ltd. Department of Immunology and Microbiology School of Life Sciences Beijing University of Chinese Medicine

Many studies have shown that the development of allergic asthma is associated with intestinal microbiota dysbiosis. Based on the gut-lung axis theory， probiotic intervention may be a potential strategy for respiratory diseases. Lacticaseibacillus paracasei K56 was reported to regulate gut microbiota in mice. However， its effect on allergic asthma has not been reported. In this study， we investigated the effect of the K56 on ovalbumin-induced asthma and its possible mechanisms. Our results showed that K56 reduced asthma symptoms and inflammatory cell infiltration in the lung of asthmatic mice. And K56 regulated the differentiation of helper T cells in the lung and intestine. Results from 16S rRNA gene sequencing showed that K56 prophylaxis significantly elevated the richness of Akkermansia and Burkholderia. Meanwhile， K56 abrogated the decrease in the levels of short-chain fatty acids (SCFAs) in the feces. In addition， a rebound in the mRNA expression of the SCFA receptors was observed after K56 prophylaxis. Notably， the regulatory T cell (Treg) frequencies and the FFAR3 levels were positively correlated. These results suggest that K56 could attenuate asthma， possibly by modulating the intestinal microbiota and regulating Treg differentiation through SCFA metabolized. Our study showed that K56 may be used as a probiotic to prevent pulmonary inflammation and dysbiosis of the intestinal microbiota in allergic asthma.

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絮凝沉降法净化窑气废水的工艺研究

广东化工 2020年第20期47卷 227-229页

作者：左中强赵怡丽杨舒程陈波成兰兴赵增兵河南省远洋粉体科技股份有限公司河南长垣453430 河南省化工研究所有限责任公司河南郑州450052

絮凝沉降法是一种简便、经济、应用最广泛的水处理方法。窑气废水使用常规生物处理应用起来存在很大困难,采用絮凝剂对废水进行净化研究比较方便。使用常规化学絮凝剂AlCl3、Fe2(SO4)3、CPAM和APAM对窑气废水进行絮凝处理,本文通过实验... 详细信息

絮凝沉降法是一种简便、经济、应用最广泛的水处理方法。窑气废水使用常规生物处理应用起来存在很大困难,采用絮凝剂对废水进行净化研究比较方便。使用常规化学絮凝剂AlCl3、Fe2(SO4)3、CPAM和APAM对窑气废水进行絮凝处理,本文通过实验探索不同絮凝剂的种类及操作条件对窑气废水的处理影响规律,确定了最佳的絮凝剂种类和处理条件,试验结果表明:阴离子聚丙烯酰胺,废水处理效果好,COD去除率为90.42%。

关键词：窑气废水聚合氯化铝聚丙烯酰胺聚合硫酸铁

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纳米肥料制备研究进展

河南化工 2017年第10期34卷 7-11页

作者：刘秀伟袁琳罗迎娣赵怡丽郭歌河南省化工研究所有限责任公司河南郑州450052

从纳米结构肥料、纳米材料胶结包膜型缓/控释肥料、纳米碳增效肥料、纳米生物复合肥料四方面出发,介绍了纳米肥料近期的研究进展情况,并对其应用前景进行了展望。

关键词：纳米肥料作物产量缓/控释肥料

STAP method based on atomic norm minimization with array amplitude-phase error calibration

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Journal of Systems Engineering and Electronics 2021年第1期32卷 21-30页

作者： PANG Xiaojiao zhao Yongbo CAO Chenghu XU Baoqing HU yili National Lab of Radar Signal Processing Department of Electrical EngineeringXidian UniversityXi’an 710071China

In this paper,a space-time adaptive processing(STAP)method is proposed for the airborne radar with the array amplitude-phase error considered,which is based on atomic norm minimization(ANM).In the conventional ANM-based STAP method,the influence of the array amplitude-phase error is not considered and restrained,which inevitably causes performance *** solve this problem,the array amplitude-phase error is firstly ***,by pre-estimating the array amplitude-phase error information,a modified ANM model is built,in which the array amplitude-phase error factor is separated from the clutter response and the clutter covariance matrix(CCM)to improve the estimation accuracy of the *** prove that the atomic norm theory is applicable in the presence of the array amplitude-phase error,the clutter sparsity is analyzed in this ***,simulation results demonstrate that the proposed method is superior to the state-of-the-art STAP ***,the measured data is used to verify the effectiveness of the proposed method.

关键词： atomic norm minimization(ANM) space-time adaptive processing(STAP) airborne radar array amplitude-phase error

In vivo urinary compatibility of Mg-Sr-Ag alloy in swine model

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Bioactive Materials 2022年第1期7卷 254-262页

作者： Di Tie Norbert Hort Minfang Chen Renguo Guan Sviatlana Ulasevich Ekaterina V.Skorb Dapeng zhao yili Liu Patricia Holt-Torres Huinan Liu Engineering Research Center of Continuous Extrusion Ministry of EducationDalian Jiaotong UniversityDalian116028China Magnesium Innovation Center Helmholtz-Zentrum GeesthachtD-21502GeesthachtGermany School of Materials Science and Engineering Tianjin University of TechnologyTianjin300384China Infochemistry Scientific Center ITMO UniversitySt.Petersburg192007Russia College of Biology Hunan University410082ChangshaChina Department of Urology China Medical UniversityShenyang110084China Department of Bioengineering Bourns College of EngineeringUniversity of California at RiversideCA92521USA

A biodegradable metallic ureteral stent with suitable mechanical properties and antibacterial activity remains a *** we reveal the scientific significance of a biodegradable Mg-Sr-Ag alloy with a favorable combination of balanced mechanical properties,adjustable indwelling time in urinary tract and evident antibacterial activity via in vivo experiments in a swine *** to the rheo-solidification process,equiaxial microstructure and significantly refined grains(average grain size:27.1μm)were ***17Sr2 and Mg4Ag were found as the primary precipitates in the matrix,due to which the alloy obtained ca.111%increase in ultimate tensile strength in comparison to pure *** the in vitro and in vivo results demonstrated the satisfactory biocompatibility of the *** evaluation and bioindicators analysis suggested that there was no tissue damage,inflammation and lesions in the urinary system caused by the degradation *** stent also improved the post-operative bladder functions viewed from the urodynamic *** findings highlight the potential of this alloy as antibacterial biodegradable urinary implant material.

关键词： In vivo Magnesium alloy Biodegradable metals Mechanical properties Urinary compatibility