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Journal of Renewable Materials 2023年第1期11卷 291-307页

作者： Long Li Yanan Lu Yu Chen Jiayi Bian Li Wang Li Li Engineering research center of Food Thermal-Processing Technology College of Food Science and TechnologyShanghai Ocean UniversityShanghai201306China

Silver nanoparticles(Ag NPs)are an effective antibacterial agent,but their application in food packaging is limited due to their easy agglomeration and *** this study,antibacterial microcapsules were fabricated using Ginkgo biloba essential oil(GBEO)as core material and chitosan and type B gelatin biopolymer as capsule *** antibacterial microcapsules were then modified with green-synthesized Ag NPs,blended into the bio-polymer polylactic acid(PLA),and finally formed as *** properties and antibacterial activity against Escherichia coli(***)and Staphylococcus aureus(***)were *** showed that the prepared antibacterial PLA films exhibited excellent antibacterial activity against foodborne *** TVC exceeded the limit value of 7 log CFU/g at 7 days compared with the 5 days of pure PLA ***,these films can extend the shelf life of grass carp fillets by 2–3 days under refrigeration.

关键词： Silver nanoparticles chitosan gelatin microcapsules antibacterial activity food packaging

Development and evaluation of a thermostatic nucleic acid testing device based on magnesium pyrophosphate precipitation for detecting Enterocytozoon hepatopenaei

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Chinese Chemical Letters 2022年第8期33卷 4053-4056页

作者： Zhu Chen Kaixuan Zhao Ziyu He Xiaofang Luo Zuodong Qin Yimin Tan Xiangming Zheng Zuozhong Wu Yan Deng Hui Chen Yuan Guo Song Li Hunan Key Laboratory of Biomedical Nanomaterials and Devices Hunan University of TechnologyZhuzhou 412007China Department of Cardiovascular Medicine The Affiliated Zhuzhou Hospital Xiangya Medical CollegeCentral South UniversityZhuzhou 412000China Institute of Supramolecular Structures and Micro-nano Materials Hunan University of TechnologyZhuzhou 412007China National&Local Joint Engineering research center for research and Technology of Advanced packaging Materials Hunan University of TechnologyZhuzhou 412007China Hunan Shengzhou Biotechnology Ltd. Zhuzhou 412000China College of Chemistry and Bioengineering Hunan University of Science and EngineeringYongzhou 425199China

Enterocytozoon hepatopenaei(EHP)infection has seriously affected prawn culture *** symptoms of the infection are not apparent,and traditional detection methods are time consuming and low in *** developed a new onsite rapid testing device(size 18.8×16.7×6.6 cm^(3))for EHP based on magnesium pyrophosphate precipitation and facilitated by loop mediated isothermal amplification(LAMP).The design and fabrication of the device enables efficient light *** device has a highly sensitive detector,high-precision thermal controller,and humanized touch *** temperature control precision of the device is 0.2-0.3℃ at 60℃,63℃,and 65℃.The coefficients of variation values(CVV)of the luminous power in one channel at light on and off were found to be 0.0097 and 0.0014,respectively,within 1 *** CVV of the background,luminous power,and values of eight PCR tubes filled with pure water were all less than 5%.In the EHP experiment,eight samples(including seven positive and one negative)confirmed the effectiveness of the device,and four positive and four negative samples verified whether cross-contamination *** them,the rise time of the curve was about 15 *** results assert that the developed device exhibits enhanced stability and uniformity and has excellent performance with high sensitivity,good specificity,and low testing ***,the optimal and minimum absorbance range was 555-655 nm for monitoring the production of LAMP.

关键词： Turbidity detection Magnesium pyrophosphate precipitation Nucleic acid testing Enterocytozoon hepatopenaei Loop-mediated isothermal amplification

Fuzzy image restoration using modulation transfer function

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High Technology Letters 2016年第4期22卷 461-469页

作者：袁媛 Yi Yaohua Liu Juhua School of Printing and packaging Wuhan University

The key difficulty of restoring a fuzzy image is to estimate its point spread function( PSF). In the paper,PSF is modelled based on modulation transfer function( MTF). The first step is calculating the image MTF. In the traditional slanted-edge method,a sub-block is always manually extracted from original image and its MTF will be viewed as the result of the whole image. However,handcraft extraction is inefficient and will lead to inaccurate results. Given this,an automatic MTF computation algorithm is proposed,which extracts and screens out all the effective sub-blocks and calculates their average MTF as the final result. Then,a two-dimensional MTF restoration model is constructed by multiplying the horizontal and vertical MTF,and it is combined with conventional image restoration methods to restore fuzzy image. Experimental results indicate the proposed method implementes a fast and accurate MTF computation and the MTF model improves the performance of conventional restoration methods significantly.

关键词： fuzzy image modulation transfer function(MTF) slanted-edge method automatic computation MTF restoration model

Recycling Carbon Resources from Waste PET to Reduce Carbon Dioxide Emission:Carbonization Technology Review and Perspective

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Journal of Renewable Materials 2023年第5期11卷 2085-2108页

作者： Xing Zhou Qi Wang Sai Feng Jingrui Deng Keming Zhu Yun Xing Xiaolian Meng Xiaojun Wang Lu Li Faculty of Printing Packaging Engineering and Digital Media TechnologyXi’an University of TechnologyXi’an710048China School of Materials Science and Engineering Jingdezhen Ceramic InstituteJingdezhen333403China Environmental Resources and Material Industry Technology research Institute of Zhongzhao Construction Groups Guangzhou510623China research Institute Transfar Chemicals GroupHangzhou311215China Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry Ministry of EducationShaanxi University of Science and TechnologyXi’an710021China Shaanxi Collaborative Innovation center of Industrial Auxiliary Chemistry and Technology Shaanxi University of Science and TechnologyXi’an710021China

Greenhouse gas emissions from waste plastics have caused global warming all over the world,which has been a central threat to the ecological environment for humans,flora and *** waste plastics,waste polyethylene terephthalate(PET)is attractive due to its excellent stability and ***,merging China’s carbon peak and carbon neutrality goals would be *** this review,we summarize the current state-of-the-art of carbon emission decrease from a multi-scale perspective *** suggest that the carbon peak for waste PET can be achieved by employing the closed-loop supply chain,including recycling,biomass utilization,carbon capture and *** PET can be a valuable and renewable resource in the whole life ***,all kinds of PET plastics can be ultimately converted into CO_(2),which can also be feedstock for various kinds of chemical products,including ethyl alcohol,formic acid,soda ash,PU,starch and so *** a result,the closed-loop supply chain can help the PET plastics industry drastically reduce its carbon footprint.

关键词： Carbon peak emission PET plastic recycling waste management

Modification of mechanical properties by TiO_2 nano-particle for biodegradable materials made from palm oil sludge and activated sludge cake

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中国有色金属学会会刊：英文版 2012年第S3期22卷 697-701页

作者： Panithi YUTHAVISUTHI Lerpong JARUPAN Chiravoot PECHYEN Department of packaging and Materials Technology Faculty of Agro-IndustryKasetsart University center for Advanced Studies in Agriculture and Food (CASAF) KU Institute for Advanced Studies Kasetsart University

Titanium dioxide (TiO2) nano-particle is widely used in composite materials to its improved mechanical ***2 nano-particle was used in the composite material that consists of palm oil sludge from the palm oil production and activated sludge cake from a papermaking ***2 was synthesized by a hydrolysis of titanium *** parameter was investigated by the mole ratio of reactant to different solvents (isopropanol and isobutanol).The solution was prepared by adjusting pH to acid solution,resulting in different sizes and distributions of precipitate which was heated at different *** obtained samples were then morphologically and structurally characterized using X-ray diffraction (XRD) and particle size distribution (PSD).The experimental results show that the TiO2 sample from isopropanol solvent with heated temperature of 600 °C exhibits the best ***,different mass fractions of TiO2 (0,0.5%,1.0%,2.0%,4.0% and 8.0%) were used for specimens that were made from palm oil sludge mixed with activated sludge *** samples were later characterized by 3-point bending test and compression *** results indicate that the adding 0.5% and 1.0% TiO2 particles to the composite material outperforms the other fractions in terms of enhancing mechanical ***,mechanical properties tends to decrease when adding 2.0% TiO2.

关键词： titanium dioxide palm oil sludge active sludge cake composite mechanical properties

3D multicore-shell CoSn nanoboxes encapsulated in porous carbon as anode for lithium-ion batteries

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Chinese Chemical Letters 2022年第8期33卷 3925-3930页

作者： Daxu Zhang Gen Chen Haoji Wang Long Chen Ziwei Guo Zuxin Wen Ning Zhang Xiaohe Liu Renzhi Ma School of Materials Science and Engineering Central South UniversityChangsha 410083China School of Chemical Engineering and Energy Zhengzhou UniversityZhengzhou 450001China International center for Materials Nanoarchitectonics(WPI-MANA) National Institute for Materials Science(NIMS)Ibaraki 305-0044Japan Key Laboratory of Electronic packaging and Advanced Functional Materials of Hunan Province Central South UniversityChangsha 410083China

Due to its high theoretical capacity and appropriate potential platform,tin-based alloy materials are expected to be a competitive candidate for the next-generation high performance anodes of lithium-ion ***,the immense volume change during the lithium-ion insert process leads to severe disadvantages of structural damage and capacity fade,which limits its practical *** this work,a three-dimensional(3 D)multicore-shell hollow nanobox encapsulated by carbon layer is obtained via a three-step method of hydrothermal reaction,annealing and alkali *** the electrochemical reactions,the CoSn@void@C nanoboxes provide internal space to compensate the volumetric change upon the lithiation of Sn,while the inactive component of Co acts as chemical buffers to withstand the anisotropic expansion of *** to the above-mentioned advantages,the elaborated anode delivers an excellent capacity of 788.2 m Ah/g at 100 m A/g after 100 cycles and considerable capacity retention of 519.2 mAh/g even at a high current density of 1 A/g after 300 *** superior stability and high performance indicate its capability as promising anodes for lithium-ion batteries.

关键词： Lithium-ion battery CoSn nanoalloys Multicore-shell nanobox Hydrothermal reaction Sacrificial template

Discoloration mechanism,structures and recent applications of thermochromic materials via different methods:A review

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Journal of Materials Science & Technology 2018年第12期34卷 2225-2234页

作者： Youliang Cheng Xiaoqiang Zhang Changqing Fang Jing Chen Zhen Wang Faculty of Printing Packaging Engineering and Digital Media TechnologyXi'an University of Technology

Thermochromic material is a kind of smart material whose color will vary as the result of the phase transition caused by the temperature change. The characteristics of thermochromic materials are the memory functions to the temperature, having great potential applications in aerospace, military, anticounterfeiting technology, construction and other fields. In recent years, many kinds of thermochromic materials have been prepared by different methods and their discoloration mechanisms are various according to published literatures. In this paper, the classification, discoloration mechanism, preparation methods, application fields and development trend of thermochromic materials are reviewed.

关键词： Thermochromic materials Discoloration mechanism Transformation temperature Classification

Coupling strategies for silicon photonics integrated chips[Invited]

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Photonics research 2019年第2期7卷 201-239页

作者： RICCARDO MARCHETTI COSIMO LACAVA LEE CARROLL KAMIL GRADKOWSKI PAOLO MINZIONI Electrical Computer and Biomedical Engineering DepartmentUniversity of Pavia Optoelectronics research Centre Highfield CampusUniversity of Southampton Photonic packaging Group Tyndall National InstituteLee Maltings Complex

Over the last 20 years, silicon photonics has revolutionized the field of integrated optics, providing a novel and powerful platform to build mass-producible optical circuits. One of the most attractive aspects of silicon photonics is its ability to provide extremely small optical components, whose typical dimensions are an order of magnitude smaller than those of optical fiber devices. This dimension difference makes the design of fiberto-chip interfaces challenging and, over the years, has stimulated considerable technical and research efforts in the field. Fiber-to-silicon photonic chip interfaces can be broadly divided into two principle categories:in-plane and out-of-plane couplers. Devices falling into the first category typically offer relatively high coupling efficiency, broad coupling bandwidth(in wavelength), and low polarization dependence but require relatively complex fabrication and assembly procedures that are not directly compatible with wafer-scale ***, out-of-plane coupling devices offer lower efficiency, narrower bandwidth, and are usually polarization dependent. However, they are often more compatible with high-volume fabrication and packaging processes and allow for on-wafer access to any part of the optical circuit. In this paper, we review the current state-of-the-art of optical couplers for photonic integrated circuits, aiming to give to the reader a comprehensive and broad view of the field, identifying advantages and disadvantages of each solution. As fiber-to-chip couplers are inherently related to packaging technologies and the co-design of optical packages has become essential, we also review the main solutions currently used to package and assemble optical fibers with silicon-photonic integrated circuits.

关键词： Coupling strategies silicon

EGFR-targeted and gemcitabine-incorporated chemogene for combinatorial pancreatic cancer treatment

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Nano research 2024年第2期17卷 848-857页

作者： Miao Xie Qiushuang Zhang Yuanyuan Guo Lijuan Zhu Xinyuan Zhu Chuan Zhang School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesInstitute of Molecular MedicineSixth people’s HospitalSchool of MedicineShanghai Key Laboratory for Molecular Engineering of Chiral DrugsShanghai Jiao Tong UniversityShanghai 200240China Department of Radiology Shanghai Jiao Tong University Affiliated Sixth People’s HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200233China Institute of Molecular Medicine Shanghai Jiao Tong University Affiliated Renji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200127China

Pancreatic cancer stands out as a recognized intractable tumor due to its high malignancy and mortality rates,which are largely attributed to the insensitivity of current clinical chemotherapies or *** chemo and gene therapy that integrates different therapeutic targets,may increase the chemosensitivity of pancreatic cancer and synergistically enhance the antitumor ***,conventional co-delivery of gene and chemo drugs is intensively dependent on complex nanoparticle delivery systems,thus would be limited by unstable drug packaging,nonspecific biodistribution,and biosafety ***,we rationally designed an epidermal growth factor-receptor(EGFR)-targeted and gemcitabine-incorporated oligonucleotide(termed as chemogene)with anti-Bcl-2 sequence,which achieves simple and precise integration of gemcitabine into a gene regulative agent,as well as the EGFR-targeted delivery for pancreatic cancer *** solid-phase synthesis,gemcitabine,as the first-line chemodrug for pancreatic cancer,is introduced to the antisense oligonucleotide to replace all cytosine nucleosides to obtain the gemcitabine-integrated chemogene(Ge-ASO^(Bcl-2)).Thereafter,Ge-ASO^(Bcl-2)is covalently coupled with EGFR nanobody to construct the final targeted chemogene without any exogenous ***,this nanobody-conjugated chemogene exhibits remarkable tumor targeting capability and antitumor effects both in vitro and in vivo,which initiates a first step toward the application of combinatorial chemo and gene therapy for future pancreatic cancer treatment.

关键词： antisense oligonucleotide chemogene nanobody drug delivery system pancreatic cancer

Hydrophobic long-chain two-dimensional perovskite scintillators for underwater X-ray imaging

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Rare Metals 2024年第1期43卷 175-185页

作者： Jin-Xiao Zheng Zi-An Zhou Tiao Feng Hui Li Cheng-Hua Sun NüWang Yang Tian Yong Zhao Shu-Yun Zhou Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Laboratory of Bioinspired Smart Interfacial Science and Technology of the Ministry of Education Beijing Key Laboratory of Bioinspired Energy Materials and DevicesSchool of ChemistryBeijing Advanced Innovation Center for Biomedical EngineeringBeihang UniversityBeijing 100191China Department of Engineering Physics Tsinghua University and Key Laboratory of Particle and Radiation Imaging Ministry of EducationTsinghua UniversityBeijing 100084China e-mail:yangt@***

The underwater X-ray imaging technology development is significant to subaqueous target reconnaissance/detection/identification, subfluvial archaeology,submerged resource exploration, etc. As the core of X-ray imaging detection, the scintillator has been plagued by inherent moisture absorption and decomposition, and strict requirements for seamless packaging and ***, we designed a manganese-doped two-dimensional(2D) perovskite scintillator modified by hydrophobic longchain organic amine through the combination of component and doping engineering. The modified perovskites show high water repellency that can be used as an underwater X-ray scintillator. X-ray images of aquatic organisms or other objects with a high spatial resolution of10 lp·mm^(-1) at a big view field(32 mm × 32 mm) were obtained by scintillation screen. This hydrophobic perovskite scintillator based on molecular design is of great promise in underwater X-ray nondestructive testing technology development.

关键词： Two-dimensional perovskite Hydrophobic Scintillators Underwater X-ray imaging Underwater nondestructive testing technology