Interfacial Polyelectrolyte Complexation Spinning of Cellulose Nanofibers/CdTe Quantum Dots for Anti-counterfeiting Fluorescent Textiles

Shulin Cai,Shuaishuai Hu,Jianming Wu,An Huang,Lihong Geng,Xiangfang Peng 한국섬유공학회 2022 Fibers and polymers Vol.23 No.5

Cellulose-based fluorescent fibers were successfully fabricated by interfacial polyelectrolyte complexation (IPC)spinning, in which thioglycolic acid-modified CdTe quantum dots (QDs) were incorporated. The fibers exhibited differentfluorescent colors depending on different sizes of CdTe QDs. The IPC spinning process based on the progressive selfassemblyof negatively charged cellulose nanofibers (CNFs) and positively charged chitosan endowed the fibers highorientation degree. Together with the superior mechanical property of CNFs and the strong interfacial ionic bond andhydrogen bond interaction between CNFs and chitosan, the fluorescent fibers showed a high tensile strength above 689 MPaand toughness above 25 MJ/m3, which provided a guarantee for weaving the fluorescent fibers into textiles. With excellentoptical and mechanical performance, the resulting fluorescent fibers showed a promising potential as flexible wearable anticounterfeitingdevices, which the hard-to-see tag woven using the fluorescent fibers appeared clearly under 365 nmultraviolet light illumination. This paper would provide a new avenue for the preparation of high-performance environmentfriendlyfluorescent anti-counterfeiting textiles.

Ultrasonic Vibration and Rheocasting for Refinement of Mg–Zn–Y Alloy Reinforced with LPSO Structure

Shulin Lü,Xiong Yang,Liangyan Hao,Shusen Wu,Xiaogang Fang,Jing Wang 대한금속·재료학회 2018 METALS AND MATERIALS International Vol.24 No.6

In this work, ultrasonic vibration (UV) and rheo-squeeze casting was first applied on the Mg alloy reinforced with long periodstacking ordered (LPSO) structure. The semisolid slurry of Mg–Zn–Y alloy was prepared by UV and processed by rheosqueezecasting in succession. The effects of UV, Zr addition and squeeze pressure on microstructure of semisolid Mg–Zn–Yalloy were studied. The results revealed that the synergic effect of UV and Zr addition generated a finer microstructure thaneither one alone when preparing the slurries. Rheo-squeeze casting could significantly refine the LPSO structure and α-Mgmatrix in Mg96.9Zn1Y2Zr0.1alloy without changing the phase compositions or the type of LPSO structure. When the squeezepressure increased from 0 to 400 MPa, the block LPSO structure was completely eliminated and the average thickness ofLPSO structure decreased from 9.8 to 4.3 μm. Under 400 MPa squeeze pressure, the tensile strength and elongation of therheocast Mg96.9Zn1Y2Zr0.1alloy reached the maximum values, which were 234 MPa and 17.6%, respectively, due to its fineα-Mg matrix (α1-Mg and α2-Mg grains) and LPSO structure.

NANOSCALE POROUS SILICON MICROCAVITY BIOSENSOR FOR NOVEL LABEL-FREE TUBERCULOSIS ANTIGEN–ANTIBODY DETECTION

BAO WU,GUOGUANG RONG,JUNWEI ZHAO,SHULIN ZHANG,YONGXIN ZHU,BOYONG HE 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2012 NANO Vol.7 No.6

One third of the world population is estimated to have Mycobacterium tuberculosis infection. It is urgent to develop a rapid, inexpensive and convenient diagnostic method for detection of tuberculosis. Porous silicon material has taken more and more attention in recent years for biosensing applications and some useful results have been obtained. In this paper, we report the feasibility of applying porous silicon microcavity biosensor in a novel and relatively rapid serodiagnostic approach. Nowadays, most of serodiagnostic tests are based on labeled detection. Applying label-free detection methods can help develop fast and e±cient tuberculosis diagnostic tools, which can meet the current demand. In this study, we use this label-free sensing platform (i.e., porous silicon microcavity) to detect the interaction between 16 kDa antigen and anti-16 kDa antibody. Through a series of experiments, we verify the speci¯city and examine the sensitivity of this new diagnostic technique. The results show that it is feasible to apply porous silicon microcavity in the tests of tuberculosis.

A New Pattern of Technology Transfer in Rural China: Triple Helix of Academy-agriculture-government Relations in Baoji City

( Jun Tu ),( Shulin Gu ),( Guisheng Wu ) 기술경영경제학회 2005 Journal of Technology Innovation Vol.13 No.2

During the transformation of the agro-technology extension system in rural China, many new policy experiments are emerging to rebuild the lost linkages and to improve technology transfer with the system and among systems. Applying the Triple Helix Model of academy-agriculture-government relations, this paper explores a new pattern of technology transfer with the case of BaojiCity. The authors interpret the mechanism of "Courtyards for Agro-experts", as well as the comparison between different types of courtyards. This article concludes that the Triple Helix in the agro-sector improves technology transfer and accelerates knowledge-based regional development. In the interest of farmers there should also be concern over reducing inequity during the reform.

A New Pattern of Technology Transfer in Rural China: Triple Helix of Academy-agriculture-government Relations in Baoji City

Tu, Jun,Gu, Shulin,Wu, Guisheung The Korean Society for Technology Manageme and Eco 2005 Journal of Technology Innovation Vol.13 No.2

During the transformation of the agro-technology extension in rural China, many new Policy experiments are emerging to rebuild the lost linkages and to improve technology transfer with the system and among systems. Applying the Triple Helix Model of academy-agriculture-government relations, this paper explores a new pattern of technology transfer with the case of BaojiCity. The authors interpret the mechanism of 'Courtyards for Agro-experts', as well as the comparison between different types of courtyards. This article concludes that the Triple Helix in the agro-sector improves technology transfer and accelerates knowledge-based regional development. In the interest of farmers there should also be concern over reducing inequity the reform.

The Composition of the Rare Earth Based Conversion Coating Formed on AZ91D Magnesium Alloy

( Menglei Chang ),( Jianfeng Wu ),( Dongchu Chen ),( Shulin Ye ) 한국부식방식학회(구 한국부식학회) 2018 Corrosion Science and Technology Vol.17 No.1

As structural materials, magnesium (Mg) alloys have been widely used in the fields of aviation, automobiles, optical instruments, and electronic products. There are few studies on the effect of coating conditions on the compositional variation during the formation process of the conversion coatings. Rare-earth based conversion coating on AZ91 magnesium alloy was prepared in ceric sulfate and hydrogen peroxide contained solution. The element composition and valence as well as their distribution in the coating were analyzed with energy dispersive X-ray spectroscopy (EDS), Electron probe micro-analyzer (EPMA), X-ray photoelectron spectroscopy (XPS). The effect of treating process on the element composition were also studied. It was found that the conversion coating surface consists of Mg, Al, O, Ce, and the weight content of Ce in the coating was affected by the treating solution concentration and immersion time; the Ce element was distributed in the coating non-uniformly and existed in the form of Ce⁺³ and Ce⁺⁴, while the O element existed in the form of OH^-, O^2-, H₂O. Based on microscopic analysis results, the electrochemical deposition mechanism on the micro-anode and micro-cathode in the process of the coating growth was suggested.

An Improved Defect Detection Algorithm of Jean Fabric Based on Optimized Gabor Filter

Shuangbao Ma,Wen Liu,Changli You,Shulin Jia,Yurong Wu 한국정보처리학회 2020 Journal of information processing systems Vol.16 No.5

Aiming at the defect detection quality of denim fabric, this paper designs an improved algorithm based on theoptimized Gabor filter. Firstly, we propose an improved defect detection algorithm of jean fabric based on themaximum two-dimensional image entropy and the loss evaluation function. Secondly, 24 Gabor filter bankswith 4 scales and 6 directions are created and the optimal filter is selected from the filter banks by the onedimensionalimage entropy algorithm and the two-dimensional image entropy algorithm respectively. Thirdly,these two optimized Gabor filters are compared to realize the common defect detection of denim fabric, suchas normal texture, miss of weft, hole and oil stain. The results show that the improved algorithm has betterdetection effect on common defects of denim fabrics and the average detection rate is more than 91.25%.

Inkjet Printed Quantum Dots Color Conversion Layers for Full-color Micro-LED Displays

Feng Qin,Cao Liu,Wenhui Wu,Wenxiang Peng,Sitao Huo,Jiandong Ye,Shulin Gu 대한금속·재료학회 2023 ELECTRONIC MATERIALS LETTERS Vol.19 No.1

With the ever-growing demands for larger size and high resolution displays, Micro-light-emitting diode (Micro-LED) displaywith quantum dots (QDs) fi lm as color conversion layers (CCLs) has become one of the most promising candidates offuture display for its advantages in low power consumption and wide color range. In this study, we report a novel full-colordisplay based on blue Micro LED, which has patterned red and green QDs color conversion (QDCC) layers fabricated byinkjet printing (IJP). A structure of double-layer bank was designed to reduce color deviation, prevent crosstalk, and fl attenthe QDCC layer. By optimizing the thickness of the red/green QDCC layers and the wavelength of blue Micro LEDbacklights, a full-color QDCC-LED display with 228 PPI resolution and size of 1.11-inch was successfully fabricated andshowed superb performance. We not only eff ectively reduced crosstalk, but also improved the color conversion effi ciency ofQDs. In addition, this QDCC-LED display prepared by embedded bonding process shows a color gamut of 107.53% NTSC.

AZIN1 RNA editing alters protein interactions, leading to nuclear translocation and worse outcomes in prostate cancer

Ghalali Aram,Wang Liangzhe,Stopsack Konrad H.,Rice James M.,Wu Shulin,Wu Chin-Lee,Zetter Bruce R.,Rogers Michael S. 생화학분자생물학회 2022 Experimental and molecular medicine Vol.54 No.-

The transcript encoding Antizyme Inhibitor 1 (AZIN1) is frequently edited in various cancers, and this editing is associated with enhanced tumor aggressiveness. After comparison of wild-type AZIN1 (wtAZIN1) and edited AZIN1 (edAZIN1, which contains a Ser367Gly substitution), we report differential binding of edAZIN1 to a small set of proteins; specifically, edAZIN1 binds to alpha-smooth muscle actin (ACTA2), gamma actin 1 (ACTG1), and myosin9, whereas wtAZIN1 does not. This binding enables nuclear translocation of edAZIN1. In contrast to overexpression of edAZIN1 and, to a lesser extent, (editable) wtAZIN1, overexpression of an uneditable AZIN1 allele does not promote a cellular phenotype associated with increased tumorigenicity. In patients, both editing and nuclear localization of AZIN1 are common and are associated with tumor aggressiveness, i.e., a higher Gleason score, higher genomic instability, and a shorter progression-free survival time. In conclusion, the data indicate that binding of edAZIN1 to the actin/myosin9 complex supports its nuclear translocation, leading to enhanced cellular aggressiveness, and is associated with worse prostate cancer outcomes.