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Enhanced photocatalytic activity of fish scale loaded TiO_2 composites under solar light irradiation

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Journal of Environmental Sciences 2012年第6期24卷 1142-1148页

作者： Li-Ngee Ho soon-an ong Hakimah Osman Fong-Mun Chong School of Materials Engineering University Malaysia Perlis02600 ArauPerlisMalaysia School of Environmental Engineering University Malaysia Perlis02600 ArauPerlisMalaysia

Fish scale （FS） loaded TiO2 composites were investigated as photocatalysts in degradation of Methyl Orange under solar light irradiation. Composites were prepared through sol-gel method by varying mass ratio of TiO2/FS at 90：10, 70：30 and 50：50, respectively. The catalysts prepared in this study were characterized by using XRD, SEM, FT-IR and nitrogen sorption. The effects of solar irradiation, mass ratio of TiO//FS composites, irradiation time and catalyst loadings were studied. Synergistic effect was found in TiO2/FS of 90：10 composite which performed higher photocatalytic degradation than synthesized TiO2 under solar light irradiation. However, further increasing fish scale content in the composites reduced the photocatalytic activity drastically. Under solar light irradiation, all the catalysts in this study exhibited photocatalytic activity, except TiO2/FS of 50：50 composite that only acted as a weak biosorbent without performing any photocatalytic property. Photocatalytic degradation increased with increasing catalyst loading and irradiation time but decreased with increased of initial dye concentration.

关键词： photocatalytic degradation dye fish scale TiO2

Adaptive and scalable load balancing for metadata server cluster in cloud-scale file systems

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Frontiers of Computer Science 2015年第6期9卷 904-918页

作者： Quanqing xu Rajesh Vellore ARUMUGAM Khai Leong Yong Yonggang WEN Yew-soon ong Weiya XI Data Storage Institute Agency for Science Technology and Research Singapore 138632 Singapore School of Computer Engineering Nanyang Technological University Singapore 639798 Singapore

Big data is an emerging term in the storage indus- try, and it is data analytics on big storage, i.e., Cloud-scale storage. In Cloud-scale （or EB-scale） file systems, load bal- ancing in request workloads across a metadata server cluster is critical for avoiding performance bottlenecks and improv- ing quality of services. Many good approaches have been pro- posed for load balancing in distributed file systems. Some of them pay attention to global namespace balancing, making metadata distribution across metadata servers as uniform as possible. However, they do not work well in skew request dis- tributions, which impair load balancing but simultaneously increase the effectiveness of caching and replication, in this paper, we propose Cloud Cache （C2）, an adaptive and scal- able load balancing scheme for metadata server cluster in EB-scale file systems. It combines adaptive cache diffusion and replication scheme to cope with the request load balanc- ing problem, and it can be integrated into existing distributed metadata management approaches to efficiently improve their load balancing performance. C2 runs as follows： 1） to run adaptive cache diffusion first, if a node is overloaded, load- shedding will be used; otherwise, load-stealing will be used; and 2） to run adaptive replication scheme second, if there is a very popular metadata item （or at least two items） causing a node be overloaded, adaptive replication scheme will be used,in which the very popular item is not split into several nodes using adaptive cache diffusion because of its knapsack prop- erty. By conducting performance evaluation in trace-driven simulations, experimental results demonstrate the efficiency and scalability of C2.

关键词： metadata management load balancing adaptivecache diffusion adaptive replication cloud-scale file systems

Performance of the hybrid growth sequencing batch reactor(HG-SBR) for biodegradation of phenol under various toxicity conditions

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Journal of Environmental Sciences 2019年第1期31卷 64-72页

作者： NikAthirah Yusoff soon-an ong Li-Ngee Ho Yee-Shian Wong Farah Naemah Mohd Saad WanFadhilah Khalik Sin-Li Lee School of Environmental Engineering University Malaysia Perlis School of Materials Engineering University Malaysia Perlis

Hybrid growth microorganisms in sequencing batch reactors have proven effective for treating the toxic compound phenol, but the toxicity effect under different toxicity conditions has rarely been discussed. Therefore, the performance of the HG-SBR under toxic, acute and chronic organic loading can provide the overall operating conditions of the system. Toxic organic loading(TOL) was monitored during the first 7 hr while introducing50 mg/L phenol to the system. The system was adversely affected with the sudden introduction of phenol to the virgin activated sludge, which caused a low degradation rate and high dissolved oxygen consumption during TOL. Acute organic loading(AOL) had significant effects at high phenol concentrations(600, 800 1000 mg/L). The specific oxygen uptake rate(SOUR) gradually decreased to 4.9 mg O_2/(g MLVSS·hr) at 1000 mg/L of phenol compared to 12.74 mg O_2/(g MLVSS·hr) for 200 mg/L of phenol. The HG-SBR was further monitored during chronic organic loading(COL) over 67 days. The effects of organic loading were more apparent at 800 mg/L and 1000 mg/L phenol concentrations, as the removal range was between 22%–30% and 18%–46% respectively, which indicated the severe effects of COL.

关键词： Toxic organic loading Acute organic loading Chronic organic loading Phenol Sequencing batch reactor

Sustainable green technology on wastewater treatment:The evaluation of enhanced single chambered up-flow membrane-less microbial fuel cell

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Journal of Environmental Sciences 2018年第4期30卷 295-300页

作者： Wei-Eng Thung soon-an ong Li-Ngee Ho Yee-Shian Wong Fahmi Ridwan Yoong-Ling Oon Yoong-Sin Oon Harvinder Kaur Lehl Water Research Group (WAREG) School of Environmental Engineering Universiti Malaysia Perlis School of Materials Engineering Universiti Malaysia Perlis

This study demonstrated the potential of single chamber up-flow membrane-less microbial fuel cell（UFML-MFC） in wastewater treatment and power generation. The purpose of this study was to evaluate and enhance the performance under different operational conditions which affect the chemical oxygen demand（COD） reduction and power generation,including the increase of KCl concentration（MFC1） and COD concentration（MFC2）. The results showed that the increase of KCl concentration is an important factor in up-flow membrane-less MFC to enhance the ease of electron transfer from anode to cathode. The increase of COD concentration in MFC2 could led to the drop of voltage output due to the prompt of biofilm growth in MFC2 cathode which could increase the internal resistance. It also showed that the COD concentration is a vital issue in up-flow membrane-less *** the COD reduction was up to 96%, the power output remained constrained.

关键词： MFC Up-flow Membrane-less KCl concentration COD Ionic strength Biocathode Biofilm

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优化场景视角下的进化多任务优化综述

计算机应用 2024年第5期44卷 1325-1337页

作者：赵佳伟陈雪峰冯亮候亚庆朱泽轩 ong Yew-soon 重庆大学计算机学院重庆400044 大连理工大学计算机科学与技术学院辽宁大连116024 深圳大学计算机与软件学院广东深圳518060 南洋理工大学计算机科学与工程学院新加坡639798

随着优化问题变得日益复杂,传统的进化算法由于计算成本高昂和适用性有限而面临挑战。为了克服这些挑战,基于知识迁移的进化多任务优化(EMTO)算法应运而生,它的核心思想是通过跨任务的知识共享,同时解决多个优化问题,旨在提高进化算法... 详细信息

随着优化问题变得日益复杂,传统的进化算法由于计算成本高昂和适用性有限而面临挑战。为了克服这些挑战,基于知识迁移的进化多任务优化(EMTO)算法应运而生,它的核心思想是通过跨任务的知识共享,同时解决多个优化问题,旨在提高进化算法在应对复杂优化场景的效率。全面总结了当前进化多任务优化研究的进展,与已有综述文章相比,从不同的研究视角进行深入探讨,并指出了现有文献中对优化场景视角分析的缺失。鉴于此,从优化问题的应用场景出发,对适用于进化多任务优化的场景及其基本解决策略进行了系统性的阐述,以帮助研究人员准确地根据具体应用需求选择合适的研究方法。此外,深入讨论进化多任务优化当前面临的挑战和未来的研究方向,旨在为未来的研究提供指导和启示。

关键词：进化算法进化多任务优化知识迁移复杂优化问题

快速负荷波动下支持最优潮流的进化型多任务处理架构（英文）

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南方电网技术 2017年第10期11卷 103-114页

作者： L. P. M. I. Sampath Abhishek Gupta Yew-soon ong H. B. Gooi 南洋理工大学跨学科研究生学院新加坡639798 南洋理工大学计算机科学与工程学院新加坡639798 南洋理工大学电机与电子工程学院新加坡639798

电力系统运行规划主要使用以小时为单位运行的机组组合。目前,可再生能源在用户侧的渗透率越来越高,导致电力系统负荷产生巨大波动。因此,为了维持电力系统运行的经济性和安全需求、确保电力供应的可靠性,我们有必要进行以小时为间隔的... 详细信息

电力系统运行规划主要使用以小时为单位运行的机组组合。目前,可再生能源在用户侧的渗透率越来越高,导致电力系统负荷产生巨大波动。因此,为了维持电力系统运行的经济性和安全需求、确保电力供应的可靠性,我们有必要进行以小时为间隔的最优潮流计算,并且考虑各种可能情况。传统的元启发法比较适合解决最优潮流问题,但是由于耗时太长,实际上并不实用。为此,本文提出了一种进化型多任务处理架构,根据不同负荷需求并行处理多个最优潮流问题。仿真结果表明该架构极大地提升了进化算法在最优潮流问题的利用率,与正统进化算法相比具有更快的计算速度。

关键词：进化算法进化型多任务处理元启发最优潮流

Irreversible electroporation of the pancreas-A decade on

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Journal of Interventional Medicine 2023年第1期6卷 10-13页

作者： Daniel Yuxuan ong Guo Yuan How Uei Pua Department of Diagnostic Radiology Tan Tock Seng HospitalSingapore

Irreversible electroporation(IRE) employs the use of an electric field to cause irreversible permeability of the cell membrane, inducing apoptosis. The use of IRE for locally advanced pancreatic cancer(LAPC) was first described in 2012. The crucial advantage of IRE compared with other devices employing thermal ablation is the safety around vital structures such as vessels and ducts. This makes it an attractive option for use in the pancreas due to the close proximity of multiple major vascular structures, biliary ducts, and adjacent gastrointestinal organs. Over the past decade, IRE has established itself as a useful treatment adjunct and may soon become the standard of care, particularly for LAPC. This article will explore the current evidence and provide a concise summary of pertinent issues, including patient selection, preoperative management, clinical outcomes, radiological response and future prospects of IRE in pancreatic cancer.

关键词： Irreversible Electroporation Pancreatic Cancer Pancreas

Pure color and stable blue-light emission-alternating copolymer based on fluorene and dialkoxynaphthalene

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Pure color and stable blue-light emission-alternating copoly...

Chinese clinical practice guidelines for acute infectious diarrhea in children

13th Asian Chemical Congress

作者： Park Jong-Won Shin Dong-Cheol Kim Seul-ong Kim Yun-Hi KWON soon-KI School of Materials Science and Engineering Engineering Research InstituteGyeongsang National University SK Corporation Taejon 305-712 Department of Chemistry Gyeongsang National University

＜正＞A new blue-light emitting polymer that alternates between fluorene and alkoxynaphthalene structure has been *** fluorene and naphthalene units were highly distorted with an angle of 76.22 according to theoretica... 详细信息

关键词： OLED dialkoxynaphthalene blue-light emission

来源： cnki会议评论

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World Journal of Pediatrics 2018年第5期14卷 429-436页

作者： Jie Chen Chao-Min Wan Si-Tang G ong Feng F ang Mei Sun Yuan Qian Ying Huang Bao-Xi Wang Chun-Di X u Li-Yan Ye Mei Dong Yu Jin Zhi-Hua Huang Qin-Bing Wu Chao-Min Zhu You-Hong F ang Qi-Rong Zhu Yong-Sui Dong Department of Gastroenterology Children’s HospitalZhejiang University School of MedicineHangzhou 310051China Department of Pediatrics West China Second HospitalSichuan UniversityChengdu 610041China Department of Gas troenterology Guangzhou Women and Children’s Medical CenterGuangzhou 510623China Department of Pediatrics Tongji Hospital Affiliated to Tongji Medical CollegeHuazhong University of Science and T echnologyWuhan 430030China Department of Gas troenterology Shengjing Hospital of China Medical UniversityShenyang 110004China Laboratory of Virology Beijing Key Laboratory of Etiology ofV iral Diseases inChildrenCapital Institute ofP ediatricsBeijing 100020China Department of Gas troenterology Children’s Hospital of Fudan UniversityShanghai 201102China Department of Inf ectious Diseases Children’s Hospital of Fudan UniversityShanghai 201102China Department ofP ediatrics Tangdu HospitalThe Fourth Military Medical UniversityXi’an 710038China Department of Pediatrics Ruijin HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 350025China Department of P ediatrics Fuzhou East HospitalFuzhou 350025China Department of P ediatrics Peking Union Medical College HospitalBeijing 100730China Department of Gas troenterology Children’s Hospital of N anjing Medical UniversityNanjing 210008China Department of Gas troenterology Children’s Hospital of Sooc how UniversitySuzhou 215003China Department of Inf ectious Diseases Children’s Hospital of Chongqing Medical UniversityChongqing 400014China

Background The guidelines addressed the evidence-based indications for the management of children with acute infectious diarrhea in Chinese pediatric population. Data sources The experts group of evidence development put forward clinical problems, collects evidence, forms prelimi-nary recommendations, and then uses open-ended discussions to form recommendations. The literature review was done for developing this guideline in databases including PubMed, Cochrane, EMBASE, China Biomedical Database, and Chinese Journal Full-text Database up to June 2013. Search the topic 'acute diarrhea' or 'enteritis' and 'adolescent' or 'child' or'Pediatric patient' or 'Baby' or 'Infant'. Results For the treatment of mild, moderate dehydration, hypotonic oral rehydration solutions (ORS) are strongly recom-mended. Intravenous (IV) rehydration is recommended for severe dehydration, with a mixture of alkali-containing dextrose sodium solution. Nasogastric feeding tube rehydration is used for children with severe dehydration without IV infusion conditions with ORS solution. Regular feeding should resume as soon as possible after oral rehydration or IV rehydration. The lactose-free diet can shorten the diarrhea duration. Zinc supplements are recommended in children with acute infectious diarrhea. Saccharomyces boulardii and Lactobacillus Rhamnus are recommended to be used in acute watery diarrhea. Sac-charomyces boulardii is recommended in children with antibiotic-associated diarrhea as well. Montmorillonite and Racec-adotril (acetorphan) can improve the symptoms of diarrhea or shorten the course of acute watery diarrhea. Antibiotics are recommended with dysenteric-like diarrhea, suspected cholera with severe dehydration, immunodeficiency, and premature delivery children with chronic underlying disease;otherwise, antibiotics are not recommended. Conclusion The principles of the most controversial treatments with of acute infectious disease are reaching to a consensus in China.

关键词： Children Diarrhea Dehydration Infection Rehydration Treatment Probiotics