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Kuan-Huei LEE,Xiao Tong HOR,Jia Hui LIM,Lynette,Jia Hui LEE Shermine,Si Min YEO 세계문화관광학회 2022 International Journal of Culture and tourism Resea Vol.15 No.1
Green practices have been recognised as a growing requirement in the global Meeting, Incentive, Convention and Exhibition (MICE) industry due to increasing demand from key stakeholders, and the significant environmental harm caused by the industry. However, the subject on green practice in the Singapore MICE industry remains as one of the least developed areas of academic research. To address this gap, qualitative research involving semi-structured in-depth interviews were conducted with eight Singapore MICE organisers. It aimed to explore their views towards green practices, their extent of implementation in the waste and energy classification, as well as the motivation and barriers faced during adoption. This study revealed new findings on the contrast between Multinational Corporations (MNC) and Small & Medium Enterprise (SME) MICE companies’ commitment toward sustainable practices. The low usage of sustainability guidelines available in the market was linked to its inability to withstand the test of time in the evolving MICE industry. The study provides Practices insights for both academics and MICE practitioners given the infancy of green in Singapore coupled with the growing enthusiasm in the global MICE industry. Further research could investigate exploring internal factors affecting the adoption of sustainability practices as well as gathering views of other event stakeholders.
Zi Jia Low,Jia Chyi Wong,Kuan Hoon Ngoi,Chin Hua Chia,김현중,김홍철,이문호 한국고분자학회 2021 Macromolecular Research Vol.29 No.3
In this study, we reports the first quantification details of the pencil hardness, eraser abrasion resistance and steel wool abrasion resistance of optically-transparent and biaxially-oriented poly(ethylene terephthalate) (PET) films in various thicknesses before and after hard coating (HC) and/or optically clear adhesive (OCA) coating. Surprisingly, the PET base films were determined to exhibit unrealistically very low hardness and abrasion resistances although their stress-strain behavior followed a ductile and tough plastic nature as a high performance engineering plastic: the pencil hardness was only ≤9B even at a low loading force, 0.100 kgf, and the onset loading force to cause scratches was far below 0.013 kgf in both eraser and steel wool abrasions. These collectively confirmed that, without surface protections, PET base films are not suitable for any advanced applications. Such the low hardness and poor abrasion resistances could be improved substantially by only thin HC coating of di(trimethylolpropane) tetraacrylate (HC-a, an ultraviolet curable acrylic resin). In addition, the OCA coating based on an acrylic copolymer adhesive provided adhesion function to the PET films, showing excellent adhesion strength onto chemically-toughened glass. However, the OCA layer causes cushioning effect because of its easy plastic deformation nature, making negative impact on the hardness and abrasion resistance performances of the PET film. Thus, the OCA coating should be thinned until retaining good adhesion to adherends. Overall, PET films coated with HC and/or OCA are suitable for advanced applications in various fields including smart phones, foldable phones, and flexible display devices.
Yi‑Chia Kuan,Venkatesan Thiruvengadam,Jia‑Shin Lin,Jia‑Hsin Liu,Tsan‑Jan Chen,Hsin‑Mao Wu,Wen‑Ching Wang,Liang‑Jwu Chen 한국식물생명공학회 2018 Plant biotechnology reports Vol.12 No.1
The broad-specificity amino acid racemase (Bsar) from Pseudomonas putida catalyzes the racemization of various amino acids, offering a flexible and feasible platform to develop a new non-antibiotic selectable marker system for plant transformation. In the present study, we demonstrated that a Bsar variant, Bsar-R174K, that is useful as a selectable marker gene in Arabidopsis and rice that were susceptible to l-lysine and D-alanine. The introduction of wild-type Bsar, Bsar-R174K or Bsar-R174A into E. coli lysine or asparagine auxotrophs was able to rescue the growth of these microorganisms in minimal media supplemented with selectable amino acid enantiomers. The transformation of Arabidopsis with Bsar or Bsar variants based on d-alanine selection revealed that Bsar-R174K had the greatest efficiency (2.40%), superior to kanamycin selectionbased transformation (1.10%). Whereas, l-lysine-based selection exhibited lower efficiency for Bsar-R174K (0.17%). The progenies of selected Bsar-R174K transgenic Arabidopsis revealed normal growth properties. In addition, Bsar-R174K transgenic rice was obtained on l-lysine medium with an efficiency of 0.9%, and the progenies of the transgenic rice revealed morphologically normal phenotypes comparable with their wild-type counterparts. This study presents the first report of broad range amino acid racemase Bsar-R174K as a non-antibiotic selectable marker system applied in transgenic plants.
Kuan‑Jung Chung,Cheng‑Han Dai,Tung‑Chun Chiang,June‑Jia Xie,Ming-Tzer Lin 한국정밀공학회 2023 International Journal of Precision Engineering and Vol.24 No.9
This study adopted AI to identify the normal and abnormal vibration signals generated during robotic grinding. This study classified four fundamental factors affecting grinding into three levels to obtain a widely used result and designed an L9(34)orthogonal array for the grinding experiment. During experimentation, part of the grinding wheels was added weight to produce abnormal vibration signals, which an accelerometer would measure. The study transformed the collected vibration signals into recurrence plots and conducted model training with VGG16 CNN architecture. Finally, this study tested a model with 89.6% training accuracy. The results showed the model could identify whether the recurrence plots stand for normal or abnormal vibrations, with an accuracy of 85%. This means it could predict normal and abnormal grinding conditions and help avoid problems caused by abnormal vibrations.
Kuan Hoon Ngoi,Jia Chyi Wong,Wee Siong Chiu,Chin Hua Chia,진경식,Hyun-Joong Kim,김홍철,이문호 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.95 No.-
This study reports thefirst morphology and crystalline structure details of iron oxidenanoparticles in a comprehensive manner. A series of iron oxide nanoparticles were synthesizedin 1-octadecene from iron(III) acetylacetonate with the aid of oleic acid surfactant and thenfollowed by post thermal processes. Quantitative small and wide angle X-ray scattering analysesusing synchrotron radiation sources were performed together with electron microscopy, infraredspectroscopy and thermogravimery, providing morphology and crystalline structure details. Larger size of nanoparticles are synthesized by higher loading of the surfactant. Prolate ellipsoidalnanoparticles, rather than spherical particles, are always synthesized in single unimodal andnarrow size distribution. The individual particles are composed of core, core-shell interface, shell,and shell-surfactant interface, regardless of the sizes. Magnetite-like crystalline phases arepredominant. In addition, wüestite-like crystalline phases are discernible as minor components. For a given particle, the size and distribution are varied very little by the post thermal proccesses. Nevertheless, the other morphology characteristics, as well as the crystalline phases aresignificantly influenced through the post thermal process with a mixture of nitrogen and oxygen. In particular, the core part is thickened, the density gap between the core and the shell is reduced,and ferrimagnetic magnetite-like crystallites are enlarged and more populated. Paramagneticwüestite-like crystalline phases are decreased substantially or disappeared completely. Theseenhanced morphology and crystalline characteristics make great contributions to improvemagnetization performances significantly. Overall, this study provides the well-controlledsynthetic schemes and morphology/crystalline structure details that are essential for betterapplications of iron oxide nanoparticles in various advancedfields including biomedicine andnanotechnology.
Kuan Hoon Ngoi,Li Xiang,Jia Chyi Wong,Chin Hua Chia,Kyeong Sik Jin,Moonhor Ree 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.89 No.-
A series of silica nanoparticles (SNP-1, SNP-2, SNP-3, SNP-4, SNP-5 and SNP-6) were synthesized inethanol by the hydrolysis and polycondensation reaction of tetraethoxysilane with the aids of waterinitiator and ammonia catalyst and then investigated in a comprehensive manner in terms ofmorphological structure by using synchrotron transmission small-angle X-ray scattering and grazingincidence wide-angle X-ray scattering and combined together with dynamic light scattering, scanningelectron microscopy, infrared spectroscopy and thermogravimetry. They were confirmed to besuccessfully synthesized as oblate amorphous ellipsoids (Re = 9.70 56.30 nm, equatorial radius;e = 0.78 0.80, ellipsoidicity) with sharp surfaces in single unimodal and narrow size distributions. Theradial density profile details, including two-phases (i.e., less dense core and denser shell), weredetermined for thefirst time, in addition to a set of structural parameter details (radius of gyration,radius, core radius, shell thickness, and radius distribution). Larger particle was synthesized convenientlyby higher loading of ammonia solution with respect to the silane monomer. The as-synthesized silicaparticles were found to undergo two-step mass loss behaviors in heat treatment up to 500 C; thefirststeploss took place below 120 C due to removals of physically absorbed water molecules and possiblesolvent residues and the second-step loss above 180 C occurred by removals of water and ethanolbyproducts due to the post condensation reactions of hydroxy and ethoxy residues.
Shou-Kuan Tsai,Chen-Chih Chen,Han-Jia Lin,Han-You Lin,Ting-Tzu Chen,Lih-Chiann Wang 대한수의학회 2020 Journal of Veterinary Science Vol.21 No.2
The pandemic of avian influenza viruses (AIVs) in Asia has caused enormous economic loss in poultry industry and human health threat, especially clade 2.3.4.4 H5 and H7 subtypes in recent years. The endemic chicken H6 virus in Taiwan has also brought about human and dog infections. Since wild waterfowls is the major AIV reservoir, it is important to monitor the diversified subtypes in wildfowl flocks in early stage to prevent viral reassortment and transmission. To develop a more efficient and sensitive approach is a key issue in epidemic control. In this study, we integrate multiplex reverse transcription recombinase polymerase amplification (RT-RPA) and capillary electrophoresis (CE) for high-throughput detection and differentiation of AIVs in wild waterfowls in Taiwan. Four viral genes were detected simultaneously, including nucleoprotein (NP) gene of all AIVs, hemagglutinin (HA) gene of clade 2.3.4.4 H5, H6 and H7 subtypes. The detection limit of the developed detection system could achieve as low as one copy number for each of the four viral gene targets. Sixty wild waterfowl field samples were tested and all of the four gene signals were unambiguously identified within 6 h, including the initial sample processing and the final CE data analysis. The results indicated that multiplex RT-RPA combined with CE was an excellent alternative for instant simultaneous AIV detection and subtype differentiation. The high efficiency and sensitivity of the proposed method could greatly assist in wild bird monitoring and epidemic control of poultry.
0BTimSim: An Efficient Simulator for Wireless Ad-hoc Networks
Hui Xia,Jia Yu,Guo-Dong Wang,Zhen-Kuan Pan 보안공학연구지원센터 2016 International Journal of Future Generation Communi Vol.9 No.4
With the growth of increasingly complex in wireless ad-hoc networks, performance modeling and evaluation play a crucial part in their design process to ensure successful deployment and exploitation in practice. Compared with the actual implementation (testbeds), simulation has become a valuable tool, which allows studying large scale systems that cannot be built practically. However, most simulators currently used for such networks are intended to evaluate individual routing protocol, which should be extracted from the source code and rewritten in accordance with the simulator’s requirements. Thus, in this paper, we design a new wireless ad-hoc network simulator, called Time Step-based Wireless Ad-hoc Network Simulator (TimSim). It is intended to facilitate the migration of simulation code to real devices via providing useful APIs with real device driver. We use a discrete event processor with time step-based feature as the simulating engine, and the data can be transmitted in bit-level. A unique feature of TimSim is its ability to support the simulation of multi-thread programming. Additionally, we import database access to store the simulation information. Extensive experiments have been conducted to evaluate the efficiency of TimSim. Furthermore, a case study on a real system has been presented to illustrate its practicability.
Jianpeng Wu,Xumin Zhang,Kuan Jiang,Hongbing Jia,Xiaoting Rui,Fufeng Yang 한국섬유공학회 2020 Fibers and polymers Vol.21 No.8
In this work, a distinguished hydrothermal treatment succeeded in modifying aramid nanofibers (ANFs) with thehelp of mixed acid, and the hydrothermal-treated ANFs (hANFs) were regarded as a reinforcement agent to be introducedinto styrene-butadiene rubber (SBR) via latex co-agglutination treatment. The enhanced comprehensive behaviour of SBR/hANFs composites induced by π-π stacking interaction between hANFs and polymer chains were investigated in details. With respect to virgin SBR, it was found that the temperature at maximum rate of degradation, tear strength and tensilestrength of composites with adding 7 phr (parts per hundred rubber) hANFs significantly improved by 14 oC, 148 % and215 %, respectively. The incorporation of hANFs also endowed SBR with greatly enhanced solvent resistance.
CCDC26 Gene Polymorphism and Glioblastoma Risk in the Han Chinese Population
Wei, Xiao-Bing,Jin, Tian-Bo,Li, Gang,Geng, Ting-Ting,Zhang, Jia-Yi,Chen, Cui-Ping,Gao, Guo-Dong,Chen, Chao,Gong, Yong-Kuan Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.8
Background: Glioblastoma (GBM) is an immunosuppressive tumor whose median survival time is only 12-15 months, and patients with GBM have a uniformly poor prognosis. It is known that heredity contributes to formation of glioma, but there are few genetic studies concerning GBM. Materials and Methods: We genotyped six tagging SNPs (tSNP) in Han Chinese GBM and control patients. We used Microsoft Excel and SPSS 16.0 statistical package for statistical analysis and SNP Stats to test for associations between certain tSNPs and risk of GBM in five different models. ORs and 95%CIs were calculated for unconditional logistic-regression analysis with adjustment for age and gender. The SHEsis software platform was applied for analysis of linkage disequilibrium, haplotype construction, and genetic associations at polymorphism loci. Results: We found rs891835 in CCDC26 to be associated with GBM susceptibility at a level of p=0.009. The following genotypes of rs891835 were found to be associated with GBM risk in four different models of gene action: i) genotype GT (OR=2.26; 95%CI, 1.29-3.97; p=0.019) or GG (OR=1.33; 95%CI, 0.23-7.81; p=0.019) in the codominant model; ii) genotypes GT and GG (OR=2.18; 95%CI, 1.26-3.78; p=0.0061) in the dominant model; iii) GT (OR=2.24; 95%CI, 1.28-3.92; p=0.0053) in the overdominant model; iv) the allele G of rs891835 (OR=1.85; 95%CI, 1.14-3.00; p=0.015) in the additive model. In addition, "CG" and "CGGAG" were found by haplotype analysis to be associated with increased GBM risk. In contrast, genotype GG of CCDC26 rs6470745 was associated with decreased GBM risk (OR=0.34; 95%CI, 0.12-1.01; p=0.029) in the recessive model. Conclusions: Our results, combined with those from previous studies, suggest a potential genetic contribution of CCDC26 to GBM progression among Han Chinese.