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气相色谱-离子迁移谱技术在食品真实性鉴别中的应用研究进展

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食品科学 2025年第1期46卷 227-236页

作者：张碧莹隋雨萌张鑫李永杰孔保华刘昊天陈倩东北农业大学食品学院黑龙江哈尔滨150030

气相色谱-离子迁移谱是一种灵敏的检测、鉴别和监测不同基质中痕量物质的分析技术,能够通过气相色谱和离子迁移谱对分析物质进行二次快速分离和高精准定性。由于气相色谱-离子迁移谱具有环保、使用便捷、操作简单及适用于工业大量连续... 详细信息

气相色谱-离子迁移谱是一种灵敏的检测、鉴别和监测不同基质中痕量物质的分析技术,能够通过气相色谱和离子迁移谱对分析物质进行二次快速分离和高精准定性。由于气相色谱-离子迁移谱具有环保、使用便捷、操作简单及适用于工业大量连续检测等优点,近年来逐渐成为食品真实性鉴别的热门分析技术。本文主要介绍气相色谱-离子迁移谱的类型、结构、工作原理和分析方法,重点综述其在食品真实性鉴别中的应用,以期为食品真实性问题的解决提供理论参考。

关键词：气相色谱-离子迁移谱真实性鉴别食品应用

Complex interactions among insect viruses-insect vector-arboviruses

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Insect Science 2024年第3期31卷 683-693页

作者： Hui Wang qian chen Taiyun Wei State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops Vector-borne Virus Research CenterFujian Agriculture and ForestryUniversityFuzhouChina

Insects are the host or vector of diverse viruses including those that infect vertebrates,plants,and *** viruses reside inside their insect hosts and are vertically transmitted from parent to *** insect virus-host relationship is intricate,as these viruses can impact various aspects of insect biology,such as development,reproduction,sex ratios,and ***-borne viruses(arboviruses)that cause substantial global health or agricultural problems can also be vertically transmitted to insect vector *** infections with insect viruses and arboviruses are common in *** coinfections involve complex interactions,including synergism,dependence,and *** studies have shed light on the influence of insect viruses on the competence of insect vectors for *** this review,we focus on the biological effects of insect viruses on the transmission of arboviruses by *** also discuss the potential mechanisms by which insect viruses affect the ability of hosts to transmit arboviruses,as well as potential strategies for disease control through manipulation of insect *** of the interactions among insect vectors,insect viruses and arboviruses will provide new opportunities for development of innovative strategies to control arbovirus transmission.

关键词： arbovirus insect biology insect vectors insect virus interaction transmission

Recent advances in the development of organic photothermal nano-agents

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Nano Research 2015年第2期8卷 340-354页

作者： Xuejiao Song qian chen Zhuang Liu Institute of Functional Nono & Soft Materials (FUNSOM) Collaborative Innovation Center of 5uzhou Nano Science and TechnologySoochow University Suzhou 215123 Chino

Recently, photothermal therapy （PTT） has attracted tremendous attention because of its high efficacy in tumor ablation and minimal damage to normal tissues. While many inorganic nanomaterials, especially various gold nanostructures and nanocarbons, have been extensively explored for near-infrared （NIR） light triggered PTT in the past decade, a variety of organic photothermal agents have also emerged in recent years, aiming at replacing their inorganic counterparts which usually are not biodegradable. In this mini-review, we will summarize several typical classes of recently developed NIR-absorbing organic PTT nano- agents, which include NIR dye-containing micelles, porphysomes, protein-based agents, conjugated polymers, and organic/inorganic nanocomposites. The development of imaging-guided PTT and combination therapy will be introduced as well. Finally, the perspectives and challenges in the future development of PTT will be discussed.

关键词： photothermal therapy near-infrared organic nanomaterials

Microbiome changes:an indicator of Parkinson’s disease?

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Translational Neurodegeneration 2019年第1期8卷 483-491页

作者： Caroline Haikal qian-qian chen Jia-Yi Li Neural Plasticity and Repair Unit Wallenberg Neuroscience CenterDepartment of Experimental Medical ScienceBMC A1022184 LundSweden Institute of Neuroscience College of Life and Health SciencesNortheastern UniversityShenyangLiaoningChina Institute of Health Sciences China Medical UniversityShenyang 110112China

Parkinson’s disease is characterized by dopaminergic neuron loss and intracellular inclusions composed mainly of alpha synuclein(α-syn),but the mechanism of pathogenesis is still *** recent years,more attention has been given to the gut as a key player in the initiation and progression of PD *** studies characterizing changes in the microbiome,particularly the gut microbiome,have been *** many studies found a decrease in the bacterial family Prevotellaceae and in butyrate-producing bacterial genera such as Roseburia and Faecalibacteria,and an increase in the genera Akkermansia many of the studies reported contradictory *** this review,we highlight the findings from the different studies and reflect on the future of microbiome studies in PD research.

关键词： Parkinson’s disease Intestinal microbiota Inflammation Gut Protein aggregation

Deep learning in optical metrology:a review

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Light(Science & Applications) 2022年第4期11卷 466-519页

作者： Chao Zuo Jiaming qian Shijie Feng Wei Yin Yixuan Li Pengfei Fan Jing Han Kemao qian qian chen Smart Computational Imaging(SC)Laboratory Nanjing University of Science and Technology210094 NanjingJiangsu ProvinceChina Jiangsu Key Laboratory of Spectral Imaging&Intelligent Sense Nanjing University of Science and Technology210094 NanjingJiangsu ProvinceChina School of Engineering and Materials Science Queen Mary University of LondonLondon E14NSUK School of Computer Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore

With the advances in scientific foundations and technological implementations,optical metrology has become versatile problem-solving backbones in manufacturing,fundamental research,and engineering applications,such as quality control,nondestructive testing,experimental mechanics,and *** recent years,deep learning,a subfield of machine learning,is emerging as a powerful tool to address problems by learning from data,largely driven by the availability of massive datasets,enhanced computational power,fast data storage,and novel training algorithms for the deep neural *** is currently promoting increased interests and gaining extensive attention for its utilization in the field of optical *** the traditional,,physics-basedH approach,deep-learning-enabled optical metrology is a kind of,/data-drivenw approach,which has already provided numerous alternative solutions to many challenging problems in this field with better *** this review,we present an overview of the current status and the latest progress of deep-learning technologies in the field of optical *** first briefly introduce both traditional image-processing algorithms in optical metrology and the basic concepts of deep learning,followed by a comprehensive review of its applications in various optical metrology tasks,such as fringe denoising,phase retrieval,phase unwrapping,subset correlation,and error *** open challenges faced by the current deep-learning approach in optical metrology are then ***,the directions for future research are outlined.

关键词： backbone subset versatile

Frequency, Duration and Intensity of Dengue Fever Epidemic Risk in Townships in Pearl River Delta and Yunnan in China, 2013

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Biomedical and Environmental Sciences 2015年第5期28卷 388-395页

作者： chen qian qian MENG Yu Jie LI Yue QI Xiao Peng National Center for Public Health Surveillance and Information Services Chinese Center for Disease Control and Prevention

Dengue fever （DF）, one of the neglected tropical diseases also known as breakbone fever, is a mosquito-borne disease common in the tropics and subtropics. Dengue fever is transmitted primarily by ***, resulting in infection with any of four distinct but closely related virus serotypes. The majority of infected people experience a self-limiting clinical course. A small proportion of cases develop into life-threatening Dengue Hemorrhagic Fever or Dengue Shock Syndrome.

关键词： Duration and Intensity of Dengue Fever Epidemic Risk in Townships in Pearl River Delta and Yunnan in China Frequency

A STUDY OF THE ENERGY EFFICIENCY RENOVATION ON PUBLIC HOUSING PROJECTS

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Journal of Green Building 2012年第1期7卷 192-212页

作者： qian chen qian Ma Department of Food Agriculturaland Biological EngineeringThe Ohio State University

While the energy efficiency of commercial buildings,schools,and private homes has received increasing attention,the energy performance of public housing has long been *** high energy usage and resulting utility costs associated with such subsidized houses have added great financial burdens to the government and ***,improving public housing’s energy performance becomes an important *** paper presents a comparative study that mainly investigates the effectiveness of energy efficiency measures(EEMs)recently implemented in the Columbus Metropolitan Housing Authority’s green renovation *** building energy simulation results show that due to budget constraints,the limited EEMs put into place would only result in a marginal(7.6%)improvement to the renovated building’s energy performance prior to *** 38.5%reduction would be needed,using the performance requirement of the current building energy code as a *** on these findings,this research offers some insights into more cost-effective energy efficiency upgrades that can help reduce public housing’s energy consumption and green renovation costs.

关键词： public housing home energy efficiency energy simulation LEED

Low Complexity LDPC Decoder with Modified Sum-Product Algorithm

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Tsinghua Science and Technology 2013年第1期18卷 57-61页

作者： chen qian Weilong Lei Zhaocheng Wang Tsinghua National Laboratory for Information Science and Technology Department of Electronic Engineering Tsinghua University

This paper describes an efficient implementation of the Sum-Product Algorithm （SPA） within a Low Density Parity Check （LDPC） code decoder, where a horizontal process correction term is used to improve the decocling performance of the Min-Sum algorithms. The correction term is implemented as a look-up table. The algorithm uses the correction term redundancy by means of a coordinate transformation to reduce the hardware complexity. Simulations and hardware tests indicate that the decoding performance is very good with the appropriate look-up table

关键词： Low Density Parity Check (LDPC) code decoding look-up table

A three-dimensional version of modified Cam-clay plasticity with the generalized Mohr–Coulomb failure surface as the critical state surface

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Science China Technological Sciences 2024年第12期67卷 3965-3966页

作者： chen qian ZHENG Hong TIAN DongShuai Key Laboratory of Urban Security and Disaster Engineering Ministry of Education Beijing University of Technology

The modified Cam-clay(MCC) model was the first modern soil plasticity model, serving as the foundation for many advanced soil plasticity ***, it is essentially a two-dimensional(2D) constitutive model because it assumes that two principal stresses are always equal under triaxial tests. Consequently, it cannot accurately represent a true triaxial stress state where the three principal stresses vary independently.

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