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Qian, Z. (author), Miedema, H. (author), de Smet, L.C.P.M. (author), Sudhölter, Ernst J. R. (author)A model is presented for the Na<sup>+</sup> and K<sup>+</sup> levels in the irrigation water of greenhouses, specifically those for the cultivation of tomato. The model, essentially based on mass balances, not only describes the accumulation of Na<sup>+</sup> but includes a membrane unit for the selective removal of Na<sup>+</sup> as well. As...journal article 2018
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Huang, Yao (author), Deng, Leping (author), Ju, Pengfei (author), Huang, Luyao (author), Qian, H. (author), Zhang, Dawei (author), Li, Xiaogang (author), Terryn, H.A. (author), Mol, J.M.C. (author)In this study, a new self-healing shape memory polymer (SMP) coating was prepared to protect the aluminum alloy 2024-T3 from corrosion by the incorporation of dual-function microspheres containing polycaprolactone and the corrosion inhibitor 8-hydroxyquinoline (8HQ). The self-healing properties of the coatings were investigated via scanning...journal article 2018
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Jayantha, Wadu Mesthrige (author), Qian, QK (author), Yi, Chan On (author)Rapidly aging society is a global phenomenon with serious societal impact. With the rapid growth in the aging population in Hong Kong, it is foreseeable that every flat unit will accommodate one senior citizen. To address this looming problem, the Hong Kong Government has introduced several aged friendly home design elements and care...journal article 2018
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Ouyang, X. (author), Pan, Z. (author), Qian, Zhiwei (author), Ma, Yuwei (author), Ye, G. (author)The interface between filler and hydration products can have a significant effect on the mechanical properties of the cement paste system. With different adhesion properties between filler and hydration products, the effect of microstructural features (size, shape, surface roughness), particle distribution and area fraction of filler on the...journal article 2018
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Qian, F. (author), Bannenberg, L.J. (author), Wilhelm, Heribert (author), Chaboussant, Grégory (author), Debeer-Schmitt, Lisa M. (author), Schmidt, Marcus P. (author), Aqeel, Aisha (author), Palstra, Thomas T.M. (author), Brück, E.H. (author), Lefering, A.J.E. (author), Pappas, C. (author), Mostovoy, Maxim (author), Leonov, Andrey O. (author)The lack of inversion symmetry in the crystal lattice of magnetic materials gives rise to complex noncollinear spin orders through interactions of a relativistic nature, resulting in interesting physical phenomena, such as emergent electromagnetism. Studies of cubic chiral magnets revealed a universal magnetic phase diagram composed of...journal article 2018
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Olavarria Contreras, I.J. (author), Etcheverry-Berríos, Alvaro (author), Qian, Wenjie (author), Gutiérrez Cerón, C.A. (author), Campos-Olguín, Aldo (author), Sañudo, E. Carolina (author), Dulić, Diana (author), Ruiz, Eliseo (author), Aliaga-Alcalde, Núria (author), Soler, Monica (author), van der Zant, H.S.J. (author)We have studied the single-molecule conductance of a family of curcuminoid molecules (CCMs) using the mechanically controlled break junction (MCBJ) technique. The CCMs under study contain methylthio (MeS-) as anchoring groups: MeS-CCM (1), the free-ligand organic molecule, and two coordination compounds, MeS-CCM-BF<sub>2</sub> (2) and MeS-CCM...journal article 2018
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Qian, C. (author), Mirza Gheytaghi, Amir (author), Fan, J. (author), Tang, H. (author), Sun, B. (author), Ye, H. (author), Zhang, Kouchi (author)As an increasing attention towards sustainable development of energy and environment, the power electronics (PEs) are gaining more and more attraction on various energy systems. The insulated gate bipolar transistor (IGBT), as one of the PEs with numerous advantages and potentials for development of higher voltage and current ratings, has been...journal article 2018
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Fan, Ke (author), Chan, Edwin H.W. (author), Qian, QK (author)It is claimed that transaction costs (TCs) affect the effectiveness of any green building (GB) policy. However, few studies have empirically applied TC analysis to GB incentives, which normally should have analyzed the TCs borne by different stakeholders. These include TC typology and determinants during the implementation process, especially...journal article 2018
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Ochoa, J. Jorge (author), Tan, Yongtao (author), Qian, QK (author), Shen, Liyin (author), Moreno, Eduardo López (author)Attempts for implementing sustainable urbanization have been reported and documented around the world. These efforts have led to a vast number of exemplary sustainable urbanization practices, classified as best practices. Best practices contain valuable information in the form of experiences, and learning from them represents an opportunity...journal article 2018
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Qiao, Qiyun (author), Cao, Wanlin (author), Qian, Zhiwei (author), Li, Xiangyu (author), Zhang, Wenwen (author), Liu, Wenchao (author)In this study, the cyclic behaviors of low rise concrete shear walls using recycled coarse or fine aggregates were investigated. Eight low rise Recycled Aggregates Concrete (RAC) shear wall specimens were designed and tested under a cyclic loading. The following parameters were varied: replacement percentages of recycled coarse or fine...journal article 2017
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Bannenberg, L.J. (author), Qian, F. (author), Dalgliesh, R. M. (author), Martin, N (author), Chaboussant, G. (author), Schmidt, M (author), Schlagel, D. L. (author), Lograsso, T. A. (author), Wilhelm, H (author), Pappas, C. (author)Magnetic skyrmions are nanosized topologically protected spin textures with particlelike properties. They can form lattices perpendicular to the magnetic field, and the orientation of these skyrmion lattices with respect to the crystallographic lattice is governed by spin-orbit coupling. By performing small-angle neutron scattering measurements,...journal article 2017
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Qiao, Qiyun (author), Zhang, Wenwen (author), Qian, Zhiwei (author), Cao, Wanlin (author), Liu, Wenchao (author)In order to quantitatively evaluate the shear-bearing capacity of shear connectors of square concrete filled steel tube (CFST), push-out tests on 14 square CFSTs with shear connectors have been carried out. Among the 14 CFSTs, there are 13 specimens with steel plate connectors and one specimen with steel bar connectors. The following factors...journal article 2017
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Tang, H. (author), Ye, Huai-Yu (author), Chen, Xian-Ping (author), Qian, Cheng (author), Fan, Xue-Jun (author), Zhang, Kouchi (author)In this paper, the heat transfer performance of the multi-chip (MC) LED module is investigated numerically by using a general analytical solution. The configuration of the module is optimized with genetic algorithm (GA) combined with a response surface methodology. The space between chips, the thickness of the metal core printed circuit board...journal article 2017
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Sun, B. (author), Fan, Xuejun (author), Ye, H. (author), Fan, Jiajie (author), Qian, Cheng (author), van Driel, W.D. (author), Zhang, Kouchi (author)In this paper, an integrated LED lamp with an electrolytic capacitor-free driver is considered to study the coupling effects of both LED and driver's degradations on lamp's lifetime. An electrolytic capacitor-less buck-boost driver is used. The physics of failure (PoF) based electronic thermal simulation is carried out to simulate the lamp's...journal article 2017
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Deng, X. (author), Qian, Zhiwei (author), Li, Z. (author), Dollevoet, R.P.B.J. (author)The half-space assumption has been employed in many solution methods for non-conforming contact problems in elasticity such as the Hertz theory and the Kalker's variational theory. It is generally believed that to guarantee acceptable accuracy in these half-space-based methods, the characteristic size (twice length of one semi-axis) of the...journal article 2017
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Qian, Zhiwei (author), Schlangen, E. (author), Ye, G. (author), van Breugel, K. (author)Multiscale modeling for cement-based materials, such as concrete, is a relatively young subject, but there are already a number of different approaches to study different aspects of these classical materials. In this paper, the parameter-passing multiscale modeling scheme is established and applied to address the multiscale modeling problem...journal article 2017
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Bannenberg, L.J. (author), Kakurai, K. (author), Falus, P. (author), Lelievre-Berna, E. (author), Dalgliesh, R. (author), Dewhurst, C.D. (author), Qian, F. (author), Onose, Y. (author), Endoh, Y. (author), Tokura, Y. (author), Pappas, C. (author)We present a comprehensive Small Angle Neutron Scattering (SANS) and Neutron Spin Echo Spectroscopy (NSE) study of the structural and dynamical aspects of the helimagnetic transition in Fe<sub>1-x</sub>Co<sub>x</sub>Si with x = 0.30. In contrast to the sharp transition observed in the archetype chiral magnet MnSi, the transition in Fe<sub>1-x<...journal article 2017
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Fan, Jiajie (author), Mohamed, Moumouni Guero (author), Qian, Cheng (author), Fan, Xuejun (author), Zhang, Kouchi (author), Pecht, Micheal (author)With the expanding application of light-emitting diodes (LEDs), the color quality of white LEDs has attracted much attention in several color-sensitive application fields, such as museum lighting, healthcare lighting and displays. Reliability concerns for white LEDs are changing from the luminous efficiency to color quality. However, most of the...journal article 2017
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Pappas, C. (author), Bannenberg, L.J. (author), Lelièvre-Berna, E. (author), Qian, F. (author), Dewhurst, C. D. (author), Dalgliesh, R. M. (author), Schlagel, D. L. (author), Lograsso, T. A. (author), Falus, P (author)The reference chiral helimagnet MnSi is the first system where Skyrmion lattice correlations have been reported. At a zero magnetic field the transition at TC to the helimagnetic state is of first order. Above TC, in a region dominated by precursor phenomena, neutron scattering shows the buildup of strong chiral fluctuating correlations over...journal article 2017
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Wang, Weiming (author), Li, Baojun (author), Qian, Sicheng (author), Liu, Yong-Jin (author), Wang, C.C. (author), Liu, Ligang (author), Yin, Baocai (author), Liu, Xiuping (author)Recently, 3D printing has become a powerful tool for personal fabrication. However, the price of some materials is still high which limits its applications in home users. To optimize the volume of the model, while not largely affecting the strength of the objects, researchers propose algorithms to divide the model with different kinds of...journal article 2017