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| 1 | Preparation of Gd_2O_3:Eu^(3+) downconversion luminescent material and its application in dye-sensitized solar cells显示文摘Gd_2O_3 :Eu^(3+) downconversion luminescent powder was prepared using the homogeneous precipitation method. Its optical properties were analyzed and it was introduced into a dye-sensitized solar cell (DSSC). As a luminescence medium, Gd_2O_3 :Eu^(3+) improved light harvesting via conversion luminescence and increased the photocurrent of the DSSC. As a p-type dopant insulating rare earth oxides form an energy barrier, and the Gd_2O_3 :Eu^(3+) elevated the energy level of the oxide film and increased the photovoltage. The photoelectric conversion efficiency for a DSSC with Gd_2O_3 :Eu^(3+) doping (6 : 100) reached 7.01%, which was 17.4% higher than the photoelectrical conversion efficiency of a DSSC without Gd 2 O 3 :Eu 3+ doping. | LI QingBei LIN JianMing WU JiHuai LAN Zhang WANG JiangLi WANG Yue PENG FuGuo HUANG MiaoLiang XIAO YaoMing | 2011 | Chinese Science Bulletin2011，56，28： | 5 |
| 2 | Multimodal interaction design and application in augmented reality for chemical experiment显示文摘Background Augmented reality classrooms have become an interesting research topic in the field of education,but there are some limitations.Firstly,most researchers use cards to operate experiments,and a large number of cards cause difficulty and inconvenience for users.Secondly,most users conduct experiments only in the visual modal,and such single-modal interaction greatly reduces the users'real sense of interaction.In order to solve these problems,we propose the Multimodal Interaction Algorithm based on Augmented Reality(ARGEV),which is based on visual and tactile feedback in Augmented Reality.In addition,we design a Virtual and Real Fusion Interactive Tool Suite(VRFITS)with gesture recognition and intelligent equipment.Methods The ARGVE method fuses gesture,intelligent equipment,and virtual models.We use a gesture recognition model trained by a convolutional neural network to recognize the gestures in AR,and to trigger a vibration feedback after a recognizing a five finger grasp gesture.We establish a coordinate mapping relationship between real hands and the virtual model to achieve the fusion of gestures and the virtual model.Results The average accuracy rate of gesture recognition was 99.04%.We verify and apply VRFITS in the Augmented Reality Chemistry Lab(ARCL),and the overall operation load of ARCL is thus reduced by 29.42%,in comparison to traditional simulation virtual experiments.Conclusions We achieve real-time fusion of the gesture,virtual model,and intelligent equipment in ARCL.Compared with the NOBOOK virtual simulation experiment,ARCL improves the users'real sense of operation and interaction efficiency. | Mengting XIAO Zhiquan FENG Xiaohui YANG Tao XU Qingbei GUO | 2020 | Virtual Reality & Intelligent Hardware2020，2，4： | 3 |
| 3 | Preparation of porous nanoparticle TiO_2 films for flexible dye-sensitized solar cells显示文摘A TiO2 paste was prepared by mixing commercial TiO2 (P25), ethanol, distilled water and a small amount of Ti (IV) tetrai-sopropoxide (TTIP), following by a hydrothermal treatment. Before hydrothermal treatment, a stirring for 48 h can prevent cracking TiO2 films. TTIP significantly promote the chemical connection between TiO2 particles and its adherence to the substrate, the TTIP amount of 6 mol% is suitable. UV irradiation can remove some impurities and water from the TiO2 film with an optimal time of 2 h. Transmission electron microscopy, X-ray diffraction, scanning electron microscopy and photovoltaic tests are charac- terized and measured. Shortcircuit current density, open-circuit voltage, fill factor and photoelectric conversion efficiencies for the fabricated flexible dye-sensitized solar cell are 7.20 mA cm-2, 0.769 V, 0.686 and 3.84%, respectively, under irradiation with a simulated solar light of 100 mW cm-2. | WANG Yue WU JiHuai LAN Zhang XIAO YaoMing LI QingBei PENG FuGuo LIN JianMing HUANG MiaoLiang | 2011 | Chinese Science Bulletin2011，56，24： | 3 |
| 4 | De novo transcriptome analysis of Spodoptera exigua multiple nucleopolyhedrovirus(SeMNPV) genes in latently infected Se301 cells显示文摘Cells of the P8-Se301-C1 strain are Spodoptera exigua cell clones that each harbor a partial version of the S. exigua multiple nucleopolyhedrovirus(SeMNPV) genome and which are resistant to homologous SeMNPV infections. The cells produce no viral progeny, suggesting that the infection is a latent-like viral infection. To investigate the SeMNPV genes harbored in the P8-Se301-C1 cells,the de novo transcriptomes of P8-Se301-C1 cells and S. exigua Se301 cells were analyzed and compared. A total of 54,569,296 reads were obtained from the P8-Se301-C1 cells that yielded112,565 final unigenes with a mean length of 1,093 nt. A total of 56,865,504 reads were obtained from the Se301 cells that yielded 102,996 final unigenes with a mean length of 1,082 nt. Ten SeMNPV gene transcripts(se5, se7, se8, se12, se43, se45, se89, se90, se124, and se126) were detected in the P8-Se301-C1 cells by RNA-Seq but not in the Se301 cells, which was verified by RTPCR. 5'/3' RACE analyses showed that the 3'- or 5'-end sequences of the viral transcripts are aligned to the host gene sequences in P8-Se301-C1 cells, suggesting that the SeMNPV genes may integrate into and be transcribed with the host genes in the P8-Se301-C1 cells. Furthermore, six additional viral gene transcripts, se11, se42, se44, se88, se91, and se127(incorporated into chimeric fusion transcripts in the P8-Se301-C1 cells), were detected in the RACE analyses. Taken together, sixteen SeMNPV transcripts were identified in the P8-Se301-C1 cell strain. This study provides information to develop the understanding of baculovirus latent infections and superinfection exclusion. | Zheng Fang Jingxu Shao Qingbei Weng | 2016 | Virologica Sinica2016，31，5： | 2 |
| 5 | Enhancing photovoltaic performance of dye-sensitized solar cell by rare-earth doped oxide of Lu203 : (Tm3+,yb3+)显示文摘 | Qingbei Li Jianming Lin Jihuai Wu | 2011 | Electrochimica Acta2011，56，： | 1 |
| 6 | The role of the PI3K-Akt signal transduction pathway in Autographa californica multiple nucleopolyhedrovirus infection of Spodoptera frugiperda cells显示文摘 | Wei Xiao Yi Yang Qingbei Weng Tiehao Lin Meijin Yuan Kai Yang Yi Pang | 2009 | Virology2009，，1： | 1 |
| 7 | Potential roles of 3′-5′exonuclease activity of NM23-H1 in DNA repair and malignant progression显示文摘 | David M. Kaetzel Qingbei Zhang Mengmeng Yang Joseph R. McCorkle Deqin Ma Rolf J. Craven | 2006 | Journal of Bioenergetics and Biomembranes2006，，3： | 1 |
| 8 | An intelligent navigation experimental system based on multi-mode fusion显示文摘At present,most experimental teaching systems lack guidance of an operator,and thus users often do not know what to do during an experiment.The user load is therefore increased,and the learning efficiency of the students is decreased.To solve the problem of insufficient system interactivity and guidance,an experimental navigation system based on multi-mode fusion is proposed in this paper.The system first obtains user information by sensing the hardware devices,intelligently perceives the user intention and progress of the experiment according to the information acquired,and finally carries out a multi-modal intelligent navigation process for users.As an innovative aspect of this study,an intelligent multi-mode navigation system is used to guide users in conducting experiments,thereby reducing the user load and enabling the users to effectively complete their experiments.The results prove that this system can guide users in completing their experiments,and can effectively reduce the user load during the interaction process and improve the efficiency. | Rui HAN Zhiquan FENG Jinglan TIAN Xue FAN Xiaohui YANG Qingbei GUO | 2020 | Virtual Reality & Intelligent Hardware2020，2，4： | 0 |
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