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| 1 | Chitosan and chemically modified chitosan beads for acid dyes sorption显示文摘The capabilities of chitosan and chitosan-EGDE(ethylene glycol diglycidyl ether) beads for removing Acid Red 37(AR 37) and Acid Blue 25(AB 25) from aqueous solution were examined.Chitosan beads were cross-linked with EGDE to enhance its chemical resistance and mechanical strength.Experiments were performed as a function of pH,agitation period and concentration of AR 37 and AB 25.It was shown that the adsorption capacities of chitosan for both acid dyes were comparatively higher than those of chitosan-EGDE.This is mainly because cross-linking using EGDE reduces the major adsorption sites-NH3+ on chitosan.Langmuir isotherm model showed the best conformity compared to Freundlich and BET.The kinetic experimental data agreed very well to the pseudo second-order kinetic model.The desorption study revealed that after three cycles of adsorption and desorption by NaOH and HCl,both adsorbents retained their promising adsorption abilities.FT-IR analysis proved that the adsorption of acid dyes onto chitosan-based adsorbents was a physical adsorption.Results also showed that chitosan and chitosan-EGDE beads were favourable adsorbers and could be employed as low-cost alternatives for the removal of acid dyes in wastewater treatment. | AZLAN Kamari WAN SAIME Wan Ngah LAI KEN Liew | 2009 | Journal of Environmental Sciences2009，21，3： | 18 |
| 2 | The improved element-free Galerkin method for three-dimensional transient heat conduction problems显示文摘With the improved moving least-squares (IMLS) approximation, an orthogonal function system with a weight function is used as the basis function. The combination of the element-free Galerkin (EFG) method and the IMLS approximation leads to the development of the improved element-free Galerkin (IEFG) method. In this paper, the IEFG method is applied to study the partial differential equations that control the heat flow in three-dimensional space. With the IEFG technique, the Galerkin weak form is employed to develop the discretized system equations, and the penalty method is applied to impose the essential boundary conditions. The traditional difference method for two-point boundary value problems is selected for the time discretization. As the transient heat conduction equations and the boundary and initial conditions are time dependent, the scaling parameter, number of nodes and time step length are considered in a convergence study. | ZHANG Zan WANG JianFei CHENG YuMin LIEW Kim Meow | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，8： | 18 |
| 3 | The improved element-free Galerkin method forthree-dimensional wave equation显示文摘The paper presents the improved element-freeGalerkin(IEFG) method for three-dimensional wave propagation.The improved moving least-squares(IMLS) approximation is employed to construct the shape function,whichuses an orthogonal function system with a weight function asthe basis function.Compared with the conventional movingleast-squares(MLS) approximation,the algebraic equationsystem in the IMLS approximation is not ill-conditioned,andcan be solved directly without deriving the inverse matrix.Because there are fewer coefficients in the IMLS than in theMLS approximation,fewer nodes are selected in the IEFGmethod than in the element-free Galerkin method.Thus,theIEFG method has a higher computing speed.In the IEFGmethod,the Galerkin weak form is employed to obtain a discretized system equation,and the penalty method is appliedto impose the essential boundary condition.The traditionaldifference method for two-point boundary value problems isselected for the time discretization.As the wave equationsand the boundary-initial conditions depend on time,the scaling parameter,number of nodes and the time step length areconsidered for the convergence study. | Zan Zhang Dong-Ming Li Yu-Min Cheng Kim Moew Liew | 2012 | Acta Mechanica Sinica2012，28，3： | 12 |
| 4 | 点式安装玻璃幕墙在火灾中的破裂行为显示文摘使用500,mm×500,mm正庚烷池火作为火源,通过全尺寸实验研究了1,200,mm×1,200,mm×6,mm的点式安装玻璃在火灾中的破裂行为.实验记录并分析了裂纹起裂时间和扩展方式、热释放速率、玻璃中心点空气温度、向火面和背火面温度以及玻璃脱落比例.同时使用有限元分析法,模拟研究了点式安装玻璃幕墙受热时的热应力分布及起裂特性,得到玻璃在热载荷作用下的破裂行为,并通过应力分布分析了此类型玻璃幕墙破裂的内在致因. | 王禹 王青松 黄柯 孙金华 何陵辉 Liew K M | 2015 | 燃烧科学与技术2015，21，3： | 11 |
| 5 | Recent Advances in Passive Digital Image Security Forensics: A Brief Review显示文摘 | Xiang Lin Jian-Hua Li Shi-Lin Wang Alan-Wee-Chung Liew Feng Cheng Xiao-Sa Huang | 2018 | Engineering2018，4，1： | 11 |
| 6 | 预应力钢绞线温度膨胀及高温蠕变性能试验研究显示文摘火灾高温下钢绞线的温度膨胀及高温蠕变性能是影响张拉钢结构抗火能力的重要因素。该文以1860级预应力钢绞线为研究对象,采用非接触式应变视频测量系统,测试了钢绞线在15个温度水平下的热膨胀应变,得到热膨胀应变随温度的变化规律,并拟合出热膨胀系数计算公式。研究发现,大约750℃时钢绞线材料发生相变,导致热膨胀应变突变。通过钢绞线在不同温度及应力水平下的高温蠕变试验,得到蠕变应变与时间的关系曲线,并建议了钢绞线高温蠕变计算公式。高温蠕变试验现象表明,在较高温度及应力水平时,蠕变会导致钢绞线断裂;对经2 h高温蠕变未断裂的钢绞线自然冷却到常温后,进行抗拉强度试验,发现其抗拉强度有一定程度的退化,且经历的蠕变温度越高,应力水平对高温蠕变后试件抗拉强度的退化影响越明显。 | 周浩 杜咏 李国强 Liew J Y Richard 汪贤聪 | 2018 | 工程力学2018，35，6： | 9 |
| 7 | 一种新型自复位耗能拉索支撑的理论研究与数值分析显示文摘传统的支撑框架体系通过材料的塑性屈服耗散地震能量,在震后往往产生较大的残余变形,不仅修复代价高昂,更会严重危害结构的使用安全。提出了一种新型支撑形式——自复位耗能拉索支撑,可在特定的地震水准下降低刚度,耗散地震能量,同时利用复位筋提供的恢复力消除支撑残余变形。对其构造和工作原理进行了详细的说明,建立了力学分析模型,理论推导了在单调荷载和往复荷载作用下的荷载-位移关系,提出了控制参数的计算方法。建立了ABAQUS有限元模型,通过与理论分析结果对比验证了支撑的工作性能。研究结果表明在楼层层间位移角达到2%时,支撑仍然具有完全的自复位能力。提出的力学模型和数值模型可为此类支撑的设计提供理论基础。 | 池沛 董军 彭洋 LIEW J Y R Richard | 2016 | 振动与冲击2016，35，21： | 7 |
| 8 | Formation and control of nitrogenous DBPs from Western Australian source waters: Investigating the impacts of high nitrogen and bromide concentrations显示文摘We studied the formation of four nitrogenous DBPs(N-DBPs) classes(haloacetonitriles,halonitromethanes, haloacetamides, and N-nitrosamines), as well as trihalomethanes and total organic halogen(TOX), after chlorination or chloramination of source waters. We also evaluated the relative and additive toxicity of N-DBPs and water treatment options for minimisation of N-DBPs. The formation of halonitromethanes, haloacetamides, and N-nitrosamines was higher after chloramination and positively correlated with dissolved organic nitrogen or total nitrogen. N-DBPs were major contributors to the toxicity of both chlorinated and chloraminated waters. The strong correlation between bromide concentration and the overall calculated DBP additive toxicity for both chlorinated and chloraminated source waters demonstrated that formation of brominated haloacetonitriles was the main contributor to toxicity. Ozone–biological activated carbon treatment was not effective in removing N-DBP precursors. The occurrence and formation of N-DBPs should be investigated on a case-by-case basis, especially where advanced water treatment processes are being considered to minimise their formation in drinking waters, and where chloramination is used for final disinfection. | Ina Kristiana Deborah Liew Rita K.Henderson Cynthia A.Joll Kathryn L.Linge | 2017 | Journal of Environmental Sciences2017，29，8： | 7 |
| 9 | Bionic Optimization Design of Electronic Nose Chamber for Oil and Gas Detection显示文摘 | Zhiyong Chang Youhong Sun Yuchen Zhang Yanli Gao Xiaohui Weng Donghui Chen Liewe David Jun Xie | 2018 | Journal of Bionic Engineering2018，15，3： | 6 |
| 10 | 火灾下钢结构的性能与高等分析显示文摘本文提出了一种改进的模型用于真实火灾下结构的性能分析。其主要特点是用非线性有限元模拟构件,反映结构整体非线性的影响。对真实火灾采用多区域及热辐射模型进行了模拟,对瞬态热传导采用有限无法进行了计算。采用边界面理论来考虑塑性沿构件截面的连续性。对承受局部火灾的半连续框架、多高层及大跨拱形桁架采用了基于性能的分析方法。中对梁跨度,火源位置对火势的蔓延对结构的影响进行了分析。最后对大跨屋面结构在非对称热力作用下的极限状态进行了分析。 | J Y Richard Liew | 2003 | 建筑钢结构进展2003，5，2： | 6 |
| 11 | Effect of the pore size of Co/SBA-15 isomorphically substituted with zirconium on its catalytic performance in Fischer-Tropsch synthesis显示文摘Cobalt catalysts supported on a series of mesoporous SBA-15 materials isomorphically substituted with zirconium (Zr/Si atomic ratio=1/20) with different pore sizes (5.7 nm,7.8 nm,11.6 nm,17.6 nm) have been synthesized.The catalysts were characterized by transmission electron microscopy,29 Si solid state magic angle spinning (MAS)NMR,N2 adsorption-desorption measurements,X-ray powder diffraction,X-ray photoelectron spectroscopy,H2-temperature programmed reduction,H2-temperature programmed desorption and O2 titrations.The results indicated that larger pore size led to weaker interactions between cobalt and the supports which lowered the temperature of both reduction steps (Co3O4 → CoO and CoO→ Co0).The catalytic performances of the catalysts in Fischer-Tropsch synthesis (FTS) were tested in a fixed bed reactor.It was found that the FTS catalytic activity and product selectivity depended strongly on the pore size of the catalysts.The catalyst with a pore size of 7.8 nm showed the best FTS activity,and the catalyst with a pore size of 17.6 nm showed the highest selectivity to C12-C20 and C20+ hydrocarbons. | TAO CongLiang 1,LI JinLin 1 & LIEW Kong Yong 1,2 1 Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education South-central University for Nationalities,Wuhan 430074,China 2 Faculty of Industrial Science and Technology,University Malaysia Pahang,Gambang 26300,Kuantan,Pahang,Malaysia | 2010 | Science China Chemistry2010，53，12： | 5 |
| 12 | 高层建筑中高强钢管混凝土的设计研究显示文摘为了减小构件尺寸和结构自重,超高强混凝土和高强钢材在高层建筑中的应用越来越广泛。但是,能够指导高强材料应用设计的试验数据和设计规范却很少。基于高强钢管混凝土在常温和高温下的试验得出了一些重要结论;通过一系列试验研究了高强材料的力学性能,如短柱在轴向压力下、梁受弯以及细长梁-柱在轴心和偏心压力下的结构性能。试验试件采用了屈服强度达到780MPa的高强钢材和圆柱体抗压强度达到180MPa的超高强混凝土;对试验所得结果与通过修正版欧洲规范EN 1994-1-1 Eurocode 4方法所得结果进行了对比分析。此外,还收集了2 000多组普通或者高强钢管混凝土的试验数据样本,通过分析给出了通用设计建议,可供实践参考。 | 熊明祥 J.Y.Richard Liew | 2015 | 建筑结构2015，45，11： | 5 |
| 13 | Effect of catalyst confinement and pore size on Fischer-Tropsch synthesis over cobalt supported on carbon nanotubes显示文摘This paper studies the impact of structure of cobalt catalysts supported on carbon nanotubes(CNT) on the activity and product selectivity of Fischer-Tropsch synthesis(FTS) reaction.Three types of CNT with average pore sizes of 5,11,and 17 nm were used as the supports.The catalysts were prepared by selectively impregnating cobalt nanoparticles either inside or outside CNT.The TPR results indicated that the catalyst with Co particles inside CNT was easier to be reduced than those outside CNT,and the reducibility of cobalt oxide particles inside the CNT decreased with the cobalt oxide particle size increasing.The activity of the catalyst with Co inside CNT was higher than that of catalysts with Co particles outside CNT.Smaller CNT pore size also appears to enhance the catalyst reduction and FTS activity due to the little interaction between cobalt oxide with carbon and the enhanced electron shift on the non-planar carbon tube surface. | XIE Wei ZHANG YuHua LIEW KongYong LI JinLin | 2012 | Science China Chemistry2012，55，9： | 4 |
| 14 | Surface pollen and vegetation reconstruction from central and northern mountains of Taiwan显示文摘Surface pollen from various montane vegeta-tions in Shalixian Mt. and Lepei Mt. of central and northern Taiwan have been explored and analyzed. The pollen datawere used to simulate vegetation types by using the biomisa-tion technique. Computing three matrixes of pollen taxa,plant functional types and combined biomes, vegetation types at each site have been finally defined through the fuzselections of a tie-breaking rule. The results show that sur-face pollen data can simulate the subtropical Castanopsis andCyclobalanopsis forests, alpine warm-temperate Quercus and Quercus-Pinus forests, and alpine temperate/cool-temperate conifers of Tsuga-Picea and Picea-Abies forests. Simulatedelevations of the forests are similar to actual locations of the forests. This study can add vertical surface pollen data forextending investigation of various vegetation types in China, provide PFT schemes and vegetation types in low-latitude and montane areas, and be applied as modern analogues for fossil pollen in order to reconstruct Quaternary | YU Ge1, LIEW Pingmei2, XUE Bin1 & LI Zhengyi2 1. Nanjing Institute of Geography & Limnolog of the Chinese Academof Sciences, Nanjing 210008, China 2. Department of Geology, Taiwan University, Taibei 106-17, Taiwan, China | 2003 | Chinese Science Bulletin2003，48，3： | 4 |
| 15 | Feasibility and accuracy of coronary imaging in elderly patients using the 64-row multi-detector computed tomography: a correlation study with conventional coronary angiography显示文摘Background Elderly patients generally have higher occurrence of coronary calcification, increased heart rate and difficulty with prolonged breath-holding. The aim of our study was to investigate the feasibility and accuracy of using 64-row multi-detector computed tomography (MDCT) in the assessment of coronary artery stenoses in elderly patients. Methods One hundred and fifty two patients with suspected or known coronary artery disease were divided into 4 groups according to their age (Group A: 40-49 years,n=34; Group B: 50-59 years, n=57; Group C: 60-69 years, n=48; Group D: 70 years and above; n=13). Coronary CT angiography (CTA) using a 64-row MDCT was performed and the findings were compared with that of conventional coronary angiography (CCA).Using axial images, multi-planar reconstructions (MPR) and maximum intensity projections (MIP), coronary segments of lumen diameter = 1.5mm were analyzed for the presence of significant stenosis (= 50% ). Results Percentages of poor image quality from coronary CTA preventing reliable correlations with CCA were 21%, 14%, 19% and 62% in Groups A to D respectively. Patients in Group D had significantly higher calcium scores compared with the other groups (P<0.001). In patients where CTA images were of acceptable quality, percentages of accurate correlations with CCA were 89.8%, 93.4%, 86.6% and 78.0% for Groups A to D respectively.There were no significant difference in serum creatinine, heart rate and contrast volume between the 4 groups. Conclusions The 64-row MDCT coronary angiography was less accurate and feasible for patients aged 70 years or above due to heavy coronary calcification and inability to perform a satisfactory breath-hold. However, a high diagnostic accuracy with the MDCT is possible in patients aged less than 70 years. | Chee Khoon LIEW Sze Piaw CHIN Tiong Kiam ONG Seyfarth Tobias Yean Yip FONG Choon Kiat ANG Houng Bang LIEW Rapaee ANNUAR Kui Hian SIM | 2006 | Journal of Geriatric Cardiology2006，3，1： | 4 |
| 16 | RhD血型基因定型在新生儿溶血病产前诊断的应用显示文摘目的检测血液RhD血型基因型并应用于新生儿溶血病(HDN)的产前诊断。方法采用聚合酶链反应序列特异性引物(PCR SSP)方法,根据PCR产物的强弱判定RhD基因型。结果36名个体血液样本中,10名为RhD-/RhD-纯合子,3名为RhD+/RhD-杂合子,23名为RhD+/RhD+纯合子。结论该方法可以准确检测出RhD血型基因型,并可用于RhD血型不合引起HDN的产前诊断。 | 田爱民 孙启俊 Helen Davies YW Liew | 2005 | 临床检验杂志2005，23，3： | 4 |
| 17 | 超高强混凝土型钢组合柱抗火性能试验研究显示文摘为研究型钢保护层厚度、柱截面尺寸、荷载比、长细比和箍筋间距对超高强混凝土型钢组合柱高温承载力的影响,开展了14根纤维增强120 MPa混凝土型钢组合柱在ISO 834标准升温曲线下的承载力试验。组合柱高温破坏现象和竖向位移历程表明:体积掺量0.15%的聚丙烯纤维能够有效防止超高强混凝土的高温爆裂;随着长细比的增加,组合柱从截面强度破坏转变为屈曲破坏。总体上,竖向位移历程曲线可分为受火初期膨胀阶段、后继的压缩变形稳定增长阶段和破坏前的压缩变形急剧增长阶段。纤维增强120 MPa混凝土型钢组合柱的耐火极限随着长细比和荷载比的增加而降低;随着截面尺寸和型钢保护层的增加而增长;双肢箍间距在80~150 mm范围变化,对耐火极限的影响较小。对比耐火极限的试验值和EN 1994-1-2及规程DBJ/T 15-81—2011简化计算方法的建议值发现,EN 1994-1-2的计算值低于试验值30%~186%,规程DBJ/T 15-81—2011的计算值与试验值偏差为-49%~16%。因此,现行规范不适用于预测120 MPa混凝土型钢组合柱的耐火极限。 | 杜咏 周汇凯 LIEW J Y Richard | 2021 | 建筑结构学报2021，42，9： | 3 |
| 18 | 超薄高分子材料热管(英文)显示文摘热管具有远高于大多数金属的导热性能,已被广泛应用于电子元器件的散热方面.由于电子元器件正朝着微型化、薄型化、片式化和高功率等趋势发展,因此散热元件必须同时具备轻薄和高导热系数的特点.本文介绍了一种由高分子材料制造的超薄热管的设计和制造过程.其厚度为0.30 mm,大小为2 cm×6 cm,输入功率为9.54 W时,有效传热系数为541 W/(m K).管壳材料为kapton薄膜,吸液芯和蒸汽腔均由光阻SU8组成,光阻SU8柱子的大小和柱子之间的间隔差异为吸液芯提供了毛细血力;另外,通过原子层积电镀,SU8光阻和kapton薄膜都覆盖上一层极薄的Ti O2膜,改善了表面和吸液芯的亲水性能,同时实现了密封. | Ryan Lewis Li-Anne Liew 徐姗姗 李永正 杨荣贵 | 2015 | Science Bulletin2015，60，7： | 3 |
| 19 | Role of the CXCR4-SDF1-HMGB1 pathway in the directional migration of cells and regeneration of affected organs显示文摘In recent years,several studies have reported positive outcomes of cell-based therapies despite insufficient engraftment of transplanted cells.These findings have created a huge interest in the regenerative potential of paracrine factors released from transplanted stem or progenitor cells.Interestingly,this notion has also led scientists to question the role of proteins in the secretome produced by cells,tissues or organisms under certain conditions or at a particular time of regenerative therapy.Further studies have revealed that the secretomes derived from different cell types contain paracrine factors that could help to prevent apoptosis and induce proliferation of cells residing within the tissues of affected organs.This could also facilitate the migration of immune,progenitor and stem cells within the body to the site of inflammation.Of these different paracrine factors present within the secretome,researchers have given proper consideration to stromal cell-derived factor-1(SDF1)that plays a vital role in tissue-specific migration of the cells needed for regeneration.Recently researchers recognized that SDF1 could facilitate site-specific migration of cells by regulating SDF1-CXCR4 and/or HMGB1-SDF1-CXCR4 pathways which is vital for tissue regeneration.Hence in this study,we have attempted to describe the role of different types of cells within the body in facilitating regeneration while emphasizing the HMGB1-SDF1-CXCR4 pathway that orchestrates the migration of cells to the site where regeneration is needed. | Nazmul Haque Ismail M Fareez Liew Fong Fong Chanchal Mandal Noor Hayaty Abu Kasim Kranthi RajaKacharaju Pratiwi Soesilawati | 2020 | World Journal of Stem Cells2020，12，9： | 3 |
| 20 | Anatomy of Mdm2 and Mdm4 in evolution显示文摘老鼠双分钟(Mdm ) 基因从古老的真核细胞的 placozoa Trichoplax adhaerens 跨越进化 timeframe,全部暗示一个重要、可能保存的细胞的角色人现代人的历史。到 DNA 损坏的 DNA 正直和反应的维护包含许多关键规章的小径,包括对瘤 suppressor 蛋白质 p53 的精确控制。在大多数脊椎动物,通过指向的 proteasomal 的 p53 的降级被 Mdm2 和 Mdm2 相关的蛋白质 Mdm4 的 heterodimers 首先调停(也作为 MdmX 知道) 。Mdm2 和 Mdm4 让 p53 有约束力的区域,酸的领域,锌手指,和 C 终端包围在整个进化被保存的领域。当无脊椎的种类的定序的染色体的分析识别了单个 Mdm 基因时,脊椎动物典型地有 Mdm2 和 Mdm4 基因,建议一个复制事件百万年以前发生在关于 550-440 的无颚的脊椎动物的出现以前。在在 T 的 Mdm 和 p53 之间的功能的关系。adhaerens,存在 10 亿年了的一个有机体,暗示这二蛋白质一起演变维持保存并且调整的功能。 | Ban Xiong Tan Hoe Peng Liew Joy S. Chua Farid J. Ghadessy Yaw Sing Tan David P. Lane Cynthia R. Coffill | 2017 | Journal of Molecular Cell Biology2017，9，1： | 3 |
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