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Now showing items 1 - 16 of 61


    A self-energy switch, comprising an electromagnetic transducer (40), a circuit board (50) and a housing (60). The electromagnetic transducer (40) comprises a wire package (12), two permanent magnets and a soft magnet (8), wherein the wire package (12) winds around the soft magnet (8). The two permanent magnets can be movably arranged relative to each other at two sides of the soft magnet (8), and polarity directions of the two permanent magnets are consistent. The circuit board (50) is electrically connected to the electromagnetic transducer (40), the housing (60) coats the electromagnetic transducer (40) and the circuit board (50), the housing (60) has two elastic elements (6), and the two elastic elements (6) are respectively arranged at two ends of the electromagnetic transducer (40). When the relative movement of the two permanent magnets and the soft magnet (8) reaches a first position, a magnetic loop is formed between the two permanent magnets and the soft magnet (8), and the direction of the magnetic loop is from one of the permanent magnets to the other permanent magnet through the soft magnet (8). When the relative movement of the two permanent magnets and the soft magnet (8) reaches a second position, the direction of the magnetic loop changes.
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  • Research progress of asymptomatic bacteriuria before arthroplasty

    Zhang, Qingyu   Liu, Lihua   Sun, Wei   Gao, Fuqiang   Cheng, Liming   Li, Zirong  

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  • Fuzzy front end of innovation: a dual theoretical rationale

    Zhang, Qingyu   Cao, Mei   Doll, William  

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  • Extracorporeal shockwave therapy in osteonecrosis of femoral head

    Zhang, Qingyu   Liu, Lihua   Sun, Wei   Gao, Fuqiang   Cheng, Liming   Li, Zirong  

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  • Are closed suction drains necessary for primary total knee arthroplasty?

    Zhang, Qingyu   Liu, Lihua   Sun, Wei   Gao, Fuqiang   Zhang, Qidong   Cheng, Liming   Li, Zirong  

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  • HER-2 expression in biopsy and surgical specimen on prognosis of osteosarcoma

    Zhang, Qingyu   Liu, Fanxiao   Wang, Bomin   Li, Zhenfeng   Zhou, Dongsheng   Yang, Qiang   Dong, Jinlei   Li, Jianmin  

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  • Internal Versus External Fixation for the Treatment of Distal Radial Fractures

    Zhang, Qingyu   Liu, Fanxiao   Xiao, Zhenyun   Li, Zhenfeng   Wang, Bomin   Dong, Jinlei   Han, Yong   Zhou, Dongsheng   Li, Jianmin  

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  • Air pollutant emissions from vehicles in China under various energy scenarios

    Zhang, Qingyu   Sun, Guojin   Fang, Simai   Tian, Weili   Li, Xiaoxiao   Wang, Huiyu  

    Estimations of air pollutant emissions from vehicles in China under different energy and emission abatement policy scenarios are presented in this paper. Three scenarios are designed: (i) “business as usual?(BAU); (ii) “advanced fuel economy?(AFE); and (iii) “alternative energy replacement?(AER). The CO, VOCs, NOx, PM10, and CO2 emissions are predicted to reach 105.8, 5.9, 7.5, 1.1, and 3522.6 million tons, respectively, in the BAU scenario by 2030. In the AFE scenario, the CO, VOCs, NOx, PM10, and CO2 emissions in 2030 will be abated by 23.8%, 18.6%, 25.3%, 18.2%, and 24.5% respectively compared with the BAU scenario. In the AER scenario, the CO and VOCs in 2030 will be further reduced by 15.9% and 6.1% respectively, while NOx, PM10, and CO2 will be increased by 10.7%, 33.3%, and 2.0% compared with AFE. In conclusion, our models indicate that the emission abatement policies introduced by governmental institutions are potentially viable, as long as they are effectively implemented.
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  • Determination of second- and third-order elastic constants for energetic materials

    Fan, Junyu   Su, Yan   Zhang, Qingyu   Zhao, Jijun  

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  • Lattice Boltzmann Modeling of Droplet Condensation on Superhydrophobic Nanoarrays

    Zhang, Qingyu   Sun, Dongke   Zhang, Youfa   Zhu, Mingfang  

    Droplet nucleation and growth on superhydrophobic nanoarrays is simulated by employing a multiphase, multicomponent lattice Boltzmann (LB) model. Three typical preferential nucleation modes of condensate droplets are observed through LB simulations with various geometrical parameters of nanoarrays, which are found to influence the wetting properties of nanostructured surfaces significantly. The droplets nucleated at the top of posts (top nucleation) or in the upside interpost space of nanoarrays (side nucleation) will generate a nonwetting Cassie state, while the ones nucleated at the bottom corners between the posts of nanoarrays (bottom nucleation) produce a wetting Wenzel state. The simulated time evolutions of droplet pressures at different locations are analyzed, which offers insight into the underlying physics governing the motion of droplets growing from different nucleation modes. It is demonstrated that the nanostructures with taller posts and a high ratio of post height to interpost space (H/S) are beneficial to produce the top- and side-nucleation modes. The simulated wetting states of condensate droplets on the nanostructures, having various geometrical configurations, compare reasonably well with experimental observations. The established relationship between the geometrical parameters of nanoarrays and the preferential nucleation modes of condensate droplets provides guidance for the design of nanoarrays with desirable anticondensation superhydrophobic properties.
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  • Review of data, text and web mining software

    Zhang, Qingyu   Segall, Richard S.  

    Purpose The purpose of this paper is to review and compare selected software for data mining, text mining (TM), and web mining that are not available as free open-source software. Design/methodology/approach - Selected softwares are compared with their common and unique features. The software for data mining are SAS (R) Enterprise Miner (TM), Megaputer PolyAnalyst (R) 5.0, NeuralWare Predict (R), and BioDiscovery GeneSight (R). The software for TM are CompareSuite, SAS (R) Text Miner, TextAnalyst, VisualText, Megaputer PolyAnalyst (R) 5.0, and WordStat. The software for web mining are Megaputer PolyAnalyst (R), SPSS Clementine (R), ClickTracks, and QL2. Findings - This paper discusses and compares the existing features, characteristics, and algorithms of selected software for data mining, TM, and web mining, respectively. These softwares are also applied to available data sets. Research limitations/implications - The limitations are the inclusion of selected software and datasets rather than considering the entire realm of these. This review could be used as a framework for comparing other data, text, and web mining software. Practical implications - This paper can be helpful for an organization or individual when choosing proper software to meet their mining needs. Originality/value - Each of the software selected for this research has its own unique characteristics, properties, and algorithms. No other paper compares these selected softwares both visually and descriptively for all the three types of data, text, and web mining.
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  • Achieving flexible manufacturing competence

    Zhang, Qingyu   Vonderembse, Mark A.   Cao, Mei  

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  • A two-period carbon tax regulation for manufacturing and remanufacturing production planning

    Dou, Guowei   Guo, Hainan   Zhang, Qingyu   Li, Xiaodong  

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  • Aggravated mucosal and immune damage in a mouse model of ulcerative colitis with stress

    Gong, Yanxia   Niu, Wei   Tang, Yanping   Zhang, Qingyu   Liu, Simiao   Liu, Xi   Wang, Xiao   Xu, Yang  

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  • Risk assessment ofN,N-dimethylformamide on residents living near synthetic leather factories

    Zhang, Qingyu   Huang, Chanke   Wei, Yumei   Zhu, Qi   Tian, Weili   Wang, Cui  

    Dimethylformamide (DMF) is a broad solvent used in the production of synthetic leather. Decades of year's research have been focused on workers in leather factories suffering from the release of DMF. However, little attention was paid on general population. Here, we examined the relationship between consistent DMF exposure and annual hospitalizations of local residents in Longwan, China, in 2008. We found a positive correlation with a relative risk (RR) increase of 1.110 for total hospitalizations. When the data were stratified by sex, we observed a higher correlation for female hospitalizations than for male hospitalizations, with RR values of 1.55 and 1.084, respectively. This might be attributed to the differences in genotypes of oxidant enzyme between gender. The significance of the correlations did not disappear after we excluded the extreme value of DMF or adjusted for SO2, NO2, and PM10. Population living near the leather factory has experienced almost constant DMF exposure, and real concern should be raised regarding such exposure. Governments should take responsibility for the protection of not only occupational workers but also residents, especially women.
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