http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Antibacterial and Hydrophilic Modification of PET Fabrics by Electron Beam Irradiation Process
Shumin Zhang,Fang Ding,Yingfeng Wang,Xuehong Ren,Tung-Shi Huang 한국섬유공학회 2020 Fibers and polymers Vol.21 No.5
Electron beam (EB) irradiation has been utilized to modify materials for various applications due to its remarkableadvantages. As an efficient and environmental-friendly way for antibacterial and hydrophilic purposes, EB irradiation wasapplied to modify polyethylene terephthalate (PET) fabrics by grafting with a N-halamine precursor monomer 3-allyl-5,5-dimethylhydantoin (ADMH) and acrylic acid (AA) in this study. The grafted PET fabrics were loaded with silver ions tofurther enhance the antimicrobial efficacy. The hydrophilicity of the modified PET fabrics was evaluated by testing the watercontact angles with different contact times. The breaking strength and thermal stability of the modified swatches werestudied. The UVA light stability results showed the chlorine loading of the modified PET fabrics decreased with the extensionof UVA exposure time, and most chlorine loading could be recovered by re-chlorination. The antibacterial test showed thatthe modified PET swatches can inactivate all inoculated S. aureus and E. coli with short contact times.
Bacillus subtilis Spore Surface Display Technology: A Review of Its Development and Applications
( Guoyan Zhang ),( Yingfeng An ),( Hossain M. Zabed ),( Qi Guo ),( Miaomiao Yang ),( Jiao Yuan ),( Wen Li ),( Wenjin Sun ),( Xianghui Qi ) 한국미생물 · 생명공학회 2019 Journal of microbiology and biotechnology Vol.29 No.2
Bacillus subtilis spore surface display (BSSD) technology is considered to be one of the most promising approaches for expressing heterologous proteins with high activity and stability. Currently, this technology is used for various purposes, such as the production of enzymes, oral vaccines, drugs and multimeric proteins, and the control of environmental pollution. This paper presents an overview of the latest developments in BSSD technology and its application in protein engineering. Finally, the major limitations of this technology and future directions for its research are discussed.
Analysis on the temperature dependent electrical properties of graphene/ Al–ZnO Schottky contact
Yapeng Li,Yingfeng Li,Jianhua Zhang,Xiangyu Zou,Yongshan Wang 한국물리학회 2019 Current Applied Physics Vol.19 No.10
The electrical characteristics of the graphene/Al–ZnO schottky contact with the temperature of 180 K–300 K have been discussed in detail. Based on the TE model, the barrier height increased and the ideal factor decreased with the increasing of temperature from 180 K to 300 K, which can be interpreted by the lateral inhomogeneities of schottky barrier height. Combined with the single gauss distribution function of barrier height, the lateral inhomogeneities distribution of barrier height at the interface was confirmed. By DLTS measurement, one electron trap centers were observed at the interface.
Liancai Wang,Yingfeng Wu,Liang Chen,Yongquan Gu,Tingfei Xi,Aiying Zhang,Zeng-guo Feng 한국물리학회 2005 Current Applied Physics Vol.5 No.5
As initial step for developing tissue-engineered vascular autografts, a novel series of biodegradable aliphaticaromatic copoly-esters were synthesized and tubular scaolds were fabricated. Cytotoxicity, adhesion and growth of dierent kinds of cells on thepolyester lms and in vivo biocompatibility have been evaluated. The results indicate that these copolyesters possess good biocom-patibility. Canine bone marrow cells were seeded on the scaolds and cultured in a bioreactor for 3 days. A conuent, adherentmonolayer bone marrow cells was observed in the scaold lumen. All the testing results suggest that these copolyesters might ulti-mately nd applications for vascular tissue engineering..
An Advanced Operation Mode with Product-Service System Using Lifecycle Big Data and Deep Learning
Shan Ren,Yingfeng Zhang,Tomohiko Sakao,Yang Liu,Ruilong Cai 한국정밀공학회 2022 International Journal of Precision Engineering and Vol.9 No.1
As a successful business strategy for enhancing environmental sustainability and decreasing the natural resource consumption of societies, the product-service system (PSS) has raised significant interests in the academic and industrial community. However, with the digitisation of the industry and the advancement of multisensory technologies, the PSS providers face many challenges. One major challenge is how the PSS providers can fully capture and efficiently analyse the operation and maintenance big data of different products and different customers in different conditions to obtain insights to improve their production processes, products and services. To address this challenge, a new operation mode and procedural approach are proposed for operation and maintenance of bigger cluster products, when these products are provided as a part of PSS and under exclusive control by the providers. The proposed mode and approach are driven by lifecycle big data of large cluster products and employs deep learning to train the neural networks to identify the fault features, thereby monitoring the products’ health status. This new mode is applied to a real case of a leading CNC machine provider to illustrate its feasibility. Higher accuracy and shortened time for fault prediction are realised, resulting in the provider’s saving of the maintenance and operation cost.
Wei Li,Qian Liu,Guoyu Zhang,Xuedong Cheng,Yingfeng Wang,Zhenzhen Xu 한국섬유공학회 2022 Fibers and polymers Vol.23 No.8
This work aimed to evaluate the paste stability and desizability of new starch grafted copolymer [poly(sodium allylsulfonate)-g-starch-g-poly(ethyl acrylate)] (PSAS-g-starch-g-PEA) for providing an important supporting role in sizingapplication. The PSAS-g-starch-g-PEA samples were prepared by grafting reaction of acid-thinned starch (AHS) with SASand subsequent with EA in water phase. The PSAS-g-starch-g-PEA granules were characterized by Fourier transforminfrared spectroscopy and scanning electron microscopy. Also, paste stability was assessed and desizability was investigatedin terms of desizing efficiency, swelling ability of the film and time interval for the break of starch film in water. Comparedwith control AHS, the PSAS-g-starch-g-PEA had higher paste stability, desizing efficiency and swelling ability, and lowertime interval required, concluding that the PSAS and PEA branches could promote the paste stability and desizability ofstarch. Increasing the number of both branches facilitated the paste stability and desizability. PSAS-g-starch-g-PEA displayedpotential value in textile sizing field.
The solvent-free modification of butyl rubber in the medium of NaH
Ying Feng,Yan Xia Wang,Hong Qi Shao,En Hua Zhang,Zhen Wang,Jiruo Zhao 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.1
A novel improved butyl rubber (PMIIR) was prepared in a solvent free process, using sodium hydride(NaH) as activating agent and maleic anhydride (MAH) as modifier by processing modificationtechnology in a conventional polymer processing equipment of an internal mixer. The structure ofproducts was characterized by 1H NMR and FT-IR. In this process, polar sodium carboxylate functionalgroup and unsaturated carbon–carbon double bonds were successfully introduced onto the chains of IIRon one step. The reaction mechanism was investigated in detail. It was found that the functionalizationexperienced two modified mechanisms: addition and substitution modified mechanisms. The reactionefficiency and content of MAH were evaluated. Polymer isolation and purification operations werereduced out due to the result of solvent free. Curing and mechanical properties of products wereinvestigated. It was found that PMIIR has greatly increased curing rate due to the incorporation of polargroup and carbon–carbon double bond.