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Optimization of culturing conditions for isolated Arthrobacter sp. ZXY-2, an effective atrazine-degrading and salt-adaptive bacterium

Zhao, X. (author), Wang, Li (author), Du, Linna (author), Yang, Jixian (author), Dong, Jing (author), Ma, Fang (author)

The increasing salinity in aquatic environments has had a negative impact on the biodegradation of atrazine, an extensively used herbicide which has been proven to pollute soil and water ecosystems. In the present study, a novel atrazine-degrading strain (ZXY-2) was isolated from industrial wastewater and identified as the Arthrobacter genus...

journal article 2017

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High-Density Microporous Li₄Ti₅O₁₂ Microbars with Superior Rate Performance for Lithium-Ion Batteries

Tang, Linkai (author), He, Yan Bing (author), Wang, Chao (author), Wang, Shuan (author), Wagemaker, M. (author), Li, Baohua (author), Yang, Quan Hong (author), Kang, Feiyu (author)

Nanosized Li₄Ti₅O₁₂ (LTO) materials enabling high rate performance suffer from a large specific surface area and low tap density lowering the cycle life and practical energy density. Microsized LTO materials have high density which generally compromises their rate capability. Aiming at combining the favorable...

journal article 2017

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High resolution neutron Larmor diffraction using superconducting magnetic Wollaston prisms

Li, Fankang (author), Feng, Hao (author), Thaler, Alexander N. (author), Parnell, S.R. (author), Hamilton, William A. (author), Crow, Lowell (author), Yang, Wencao (author), Jones, Amy B. (author), Bai, Hongyu (author), Matsuda, Masaaki (author), Baxter, David V. (author), Keller, Thomas (author), Fernandez-Baca, Jaime A. (author), Pynn, Roger (author)

The neutron Larmor diffraction technique has been implemented using superconducting magnetic Wollaston prisms in both single-arm and double-arm configurations. Successful measurements of the coefficient of thermal expansion of a single-crystal copper sample demonstrates that the method works as expected. The experiment involves a new method of...

journal article 2017

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Engineering a lipase B from Candida antactica with efficient perhydrolysis performance by eliminating its hydrolase activity

Wang, Xu Ping (author), Zhou, Peng Fei (author), Li, Zhi Gang (author), Yang, Bo (author), Hollmann, F. (author), Wang, Yong Hua (author)

A Ser105Ala mutant of the lipase B from Candida antarctica enables 'perhydrolase-only' reactions. At the example of the chemoenzymatic Baeyer-Villiger oxidation of cyclohexanone, we demonstrate that with this mutant selective oxidation can be achieved in deep eutectic solvent while essentially eliminating the undesired hydrolysis reaction of...

journal article 2017

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Deep Eutectic Solvents Enable More Robust Chemoenzymatic Epoxidation Reactions

Zhou, Pengfei (author), Wang, Xuping (author), Zeng, Chaoxi (author), Wang, Weifei (author), Yang, Bo (author), Hollmann, F. (author), Wang, Yonghua (author)

A chemoenzymatic method for the production of epoxidized vegetable oils was developed. The unique combination of the commercial lipase G from Penicillieum camembertii with certain deep eutectic solvents enabled the efficient production of epoxidized vegetable oils.

journal article 2017

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Lake seasonality across the Tibetan Plateau and their varying relationship with regional mass changes and local hydrology

Lei, Yanbin (author), Yao, Tandong (author), Yang, Kun (author), Sheng, Yongwei (author), Kleinherenbrink, M. (author), Yi, Shuang (author), Bird, Broxton W. (author), Zhang, Xiaowen (author), Zhu, La (author), Zhang, Guoqing (author)

The recent growth and deepening of inland lakes in the Tibetan Plateau (TP) may be a salient indicator of the consequences of climate change. The seasonal dynamics of these lakes is poorly understood despite this being potentially crucial for disentangling contributions from glacier melt and precipitation, which are all sensitive to climate,...

journal article 2017

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Hybrid Plasmonics Slot THz Waveguide for Subwavelength Field Confinement and Crosstalk between Two Waveguides

Xiao, Jing (author), Wei, Qi-Qin (author), Yang, Duo Guo (author), Zhang, Ping (author), He, Ning (author), Zhang, Kouchi (author), Chen, Xian Ping (author)

The slot waveguide has attracted considerable attention because of its ability to confine and guide electromagnetic energy at the subwavelength scale beyond the diffraction limit. We propose a novel terahertz slot waveguide structure to achieve a better tradeoff between propagation length and field confinement capacity, the novel waveguide...

journal article 2017

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Chemoenzymatic epoxidation of alkenes with Candida antarctica lipase B and hydrogen peroxide in deep eutectic solvents

Zhou, Pengfei (author), Wang, Xuping (author), Yang, Bo (author), Hollmann, F. (author), Wang, Yonghua (author)

Epoxides are important synthetic intermediates for the synthesis of a broad range of industrial products. This study presents a promising solution to the current limitation of enzyme instability. By using simple deep eutectic solvents such as choline chloride/sorbitol, significant stabilization of the biocatalyst has been achieved leading to...

journal article 2017

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Silicon CMOS architecture for a spin-based quantum computer

Veldhorst, M. (author), Eenink, H.G.J. (author), Yang, C.H. (author), Dzurak, A. S. (author)

Recent advances in quantum error correction codes for fault-Tolerant quantum computing and physical realizations of high-fidelity qubits in multiple platforms give promise for the construction of a quantum computer based on millions of interacting qubits. However, the classical-quantum interface remains a nascent field of exploration. Here,...

journal article 2017

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Security Evaluation of the Cyber Networks under Advanced Persistent Threats

Yang, L. (author), Li, Pengdeng (author), Yang, Xiaofan (author), Tang, Yuan Yan (author)

Advanced persistent threats (APTs) pose a grave threat to cyberspace, because they deactivate all the conventional cyber defense mechanisms. This paper addresses the issue of evaluating the security of the cyber networks under APTs. For this purpose, a dynamic model capturing the APT-based cyber-attack-defense processes is proposed....

journal article 2017

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Mechanical, thermodynamic and electronic properties of wurtzite and zinc-blende GaN crystals

Qin, Hongbo (author), Luan, Xinghe (author), Feng, Chuang (author), Yang, Daoguo (author), Zhang, Kouchi (author)

For the limitation of experimental methods in crystal characterization, in this study, the mechanical, thermodynamic and electronic properties of wurtzite and zinc-blende GaN crystals were investigated by first-principles calculations based on density functional theory. Firstly, bulk moduli, shear moduli, elastic moduli and Poisson's ratios...

journal article 2017

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Resilience of epidemics for SIS model on networks

Lu, Dan (author), Yang, Shunkun (author), Zhang, Jiaquan (author), Wang, H. (author), Li, Daqing (author)

Epidemic propagation on complex networks has been widely investigated, mostly with invariant parameters. However, the process of epidemic propagation is not always constant. Epidemics can be affected by various perturbations and may bounce back to its original state, which is considered resilient. Here, we study the resilience of epidemics on...

journal article 2017

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Beam Experiments on Acceptance Criteria for Bridge Load Tests

Lantsoght, E.O.L. (author), Yang, Y. (author), van der Veen, C. (author), de Boer, A. (author), Hordijk, D.A. (author)

Loading protocols and acceptance criteria are available in the literature for load tests on buildings. For bridges, proof load tests are interesting when crucial information about the structure is missing, or when the uncertainties about the structural response are large. The acceptance criteria can then be applied to evaluate if further loading...

journal article 2017

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Impact of g -factors and valleys on spin qubits in a silicon double quantum dot

Hwang, J.C.C. (author), Yang, C.H. (author), Veldhorst, M. (author), Hendrickx, N.W. (author), Fogarty, M. A. (author), Huang, W. (author), Hudson, F. E. (author), Morello, A. (author), Dzurak, A. S. (author)

We define single electron spin qubits in a silicon metal-oxide-semiconductor double quantum dot system. By mapping the qubit resonance frequency as a function of a gate-induced electric field, the spectrum reveals an anticrossing that is consistent with an intervalley spin-orbit coupling. We fit the data from which we extract an intervalley...

journal article 2017

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Electrochemistry of zirconium in molten chlorides

Xu, L. (author), Xiao, Y (author), Xu, Q (author), Song, Qiushi (author), Yang, Y. (author)

In this work, the electrochemical behavior of zirconium was studied on an inert molybdenum electrode at 550 °C in a LiCl-KCl-K₂ZrF₆ molten salt system, which is considered as an ideal electrolyte for the zirconium electrorefining process. Several transient electrochemical techniques were used such as cyclic voltammetry,...

journal article 2017

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Dynamic causal modeling of the cortical responses to wrist perturbations

Yang, Y. (author), Guliyev, Bekir (author), Schouten, A.C. (author)

Mechanical perturbations applied to the wrist joint typically evoke a stereotypical sequence of cortical and muscle responses. The early cortical responses (<100 ms) are thought be involved in the “rapid” transcortical reaction to the perturbation while the late cortical responses (>100 ms) are related to the “slow” transcortical reaction....

journal article 2017

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Electrochemical extraction of rare earth metals in molten fluorides: Conversion of rare earth oxides into rare earth fluorides using fluoride additives

Abbasalizadeh, A. (author), Malfliet, Annelies (author), Seetharaman, Seshadri (author), Sietsma, J. (author), Yang, Y. (author)

In the present research on rare earth extraction from rare earth oxides (REOs), conversion of rare earth oxides into rare earth fluorides with fluoride fluxes is investigated in order to overcome the problem of low solubility of the rare earth oxides in molten fluoride salts as well as the formation of oxyfluorides in the fluorination process....

journal article 2017

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Color Shift Modeling of Light-Emitting Diode Lamps in Step-Loaded Stress Testing

Cai, Miao (author), Yang, Daoguo (author), Huang, J. (author), Zhang, Maofen (author), Chen, Xianping (author), Liang, Caihang (author), Koh, S.W. (author), Zhang, Kouchi (author)

The color coordinate shift of light-emitting diode (LED) lamps is investigated by running three stress-loaded testing methods, namely step-up stress accelerated degradation testing, step-down stress accelerated degradation testing, and constant stress accelerated degradation testing. A power model is proposed as the statistical model of the...

journal article 2017

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Three-dimensional fluidized beds with rough spheres: Validation of a Two Fluid Model by Magnetic Particle Tracking and discrete particle simulations

Yang, L. (author), Padding, J.T. (author), Buist, K. A. (author), Kuipers, J.R. (author)

Two fluid model simulations based on our recently introduced kinetic theory of granular flow (KTGF) for rough spheres and rough walls, are validated for the first time for full three-dimensional (3D) bubbling fluidized beds. The validation is performed by comparing with experimental data from Magnetic Particle Tracking and more detailed...

journal article 2017

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Unveiling neural coupling within the sensorimotor system: directionality and nonlinearity

Yang, Y. (author), Dewald, J.P.A. (author), van der Helm, F.C.T. (author), Schouten, A.C. (author)

Neural coupling between the central nervous system and the periphery is essential for the neural control of movement. Corticomuscular coherence is a popular linear technique to assess synchronised oscillatory activity in the sensorimotor system. This oscillatory coupling originates from ascending somatosensory feedback and descending motor...

journal article 2017