Tianwei Wang

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We present an interactive breadboard activity simulation (IBAS) to educate users in acquiring psychomotor skills in electrical circuitry pertaining to the ammeter, voltmeter and multimeter instruments. Psychomotor skills learning involves the association of cognitive functions with motor functions to make the task autonomous with repeated practice, and(More)
Thiolate-protected soluble nickel clusters, Ni(39)(SC(2)H(4)Ph)24 and Ni(41)(SC(2)H(4)Ph)25, were synthesized via a wet chemical method. The cluster formulae were identified by MALDI-TOF. Possible structures of the clusters were discussed. These clusters exhibit ferromagnetism with hysteresis loops in the 1.8-300 K range. By solvent evaporation, the(More)
The regional eco-environment quality is the base of the sustainable development. This paper developed an eco-environmental vulnerability evaluation model using spatial principle component analysis (SPCA) and eco-environment vulnerability index method. This method was carried out in a case study of Hubei Province, China. The vulnerability was classified into(More)
This paper presents experimental investigations of the dynamics of a transcritical CO2 heat pump system with two thermal storages for simultaneous cooling and heating application. The preliminary results of the thermal battery are provided using a small-scale test bed that shows the accelerated penetration of renewable energy sources for building heating(More)
Enterotoxigenic Escherichia coli are causative agents of diarrhea in humans as well as animals, and E.coli O170 belongs to this virotype. Upon mild acid degradation of the lipopolysaccharide of E.coli O170, the branched O-polysaccharide chain was partially cleaved at β-d-glactofuranosidic linkages to give multiple products, including a linear(More)
In an empirical evaluation, we examined the effect of viewing condition on psychophysical skills education in an interactive 3D simulation to train users in electrical circuitry. We compared an immersive head-mounted display (HMD)-based viewing metaphor versus a limited, desktop-based virtual reality (DVR) viewing metaphor with interaction using a spatial(More)
Hafnia alvei is a facultative and rod-shaped gram-negative bacterium that belongs to the Enterobacteriaceae family. Although it has been more than 50 years since the genus was identified, very little is known about variations among Hafnia species. Diversity in O-antigens (O-polysaccharide, OPS) is thought to be a major factor in bacterial adaptation to(More)
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