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| 1 | Hydrothermal fabrication and visible-light-driven photocatalytic properties of bismuth vanadate with multiple morphologies and/or porous structures for Methyl Orange degradation显示文摘Monoclinic BiVO4 with multiple morphologies and/or porous structures were fabricated using the hydrothermal strategy. The materials were characterized by means of the XRD, Raman, TGA/DSC, SEM, XPS, and UV-Vis techniques. The photocatalytic activities of the BiVO4 materials were evaluated for the degradation of Methyl Orange under visible-light irradiation. It is observed that pH value and surfactant exerted a great effect on the morphology and pore structure of the BiVO4 product. Spherical BiVO4 with porous structures, flower-cluster-like BiVO4, and flower-bundle-like BiVO4 were generated hydrothermally at 100°C with poly(vinyl pyrrolidone) (PVP) and urea (pH = 2) and at 160°C with NaHCO3 (pH = 7 and 8), respectively. The PVP-derived BiVO4 showed much higher surface areas (5.0-8.4 m2/g) and narrower bandgap energies (2.45-2.49 eV). The best photocatalytic performance of the spherical BiVO4 material with a surface area of 8.4 m2/g was associated with its higher surface area, narrower bandgap energy, higher surface oxygen vacancy density, and unique porous architecture. | Haiyan Jiang Hongxing Dai Xue Meng Lei Zhang Jiguang Deng Yuxi Liu Chak Tong Au | 2012 | Journal of Environmental Sciences2012，24，3： | 5 |
| 2 | Surfactant-assisted solvo- or hydrothermal fabrication and characterization of high-surface-area porous calcium carbonate with multiple morphologies显示文摘 | Zhenxuan Zhao Lei Zhang Hongxing Dai Yucheng Du Xue Meng Ruzhen Zhang Yuxi Liu Jiguang Deng | 2010 | Microporous and Mesoporous Materials2010，，1： | 1 |
| 3 | 支气管软镜下冷冻消融后冻切法即刻治疗中央气道阻塞(英文)显示文摘Objective:In order to achieve immediate relief of central airway obstruction caused by malignant tumor after interventional therapy, we observed the efficacy and safety of cryorecanalization after cryosurgery via flexible bronchoscope. Methods:Atotal of 64 cases of patients in all suffered from central airway obstruction were observed and treated by applying cryorecanalization after cryosurgery via flexible bronchoscope. Divide the operation into two steps, including cryosurgery and cryorecanalization. Evaluate the therapeutic effect immediately after the treatment, wherein the evaluating indicator includes preoperative and postoperative dyspnea indexes, quality of life score, bronchoscopy, etc. The surgical safety assessment is mainly by observing the risk of bleeding in the surgery. Results:Forty cases (62.5%) has postoperative dyspnea score improved at least one level compared with preoperative dyspnea score, 24 patients (37.5%) have no significant improvement on dyspnea score. Quality of life score (Karnofsky score):preoperative 52±18.7 points, postoperative 70±9.2 points. Bronchoscopy review:complete suecess in 12 cases (18.8%), partial success in 45 cases (70.3%), no success in 7 cases (12%). 89.1% overall clinical efficiency was achieved. In the surgery, the control to bleeding was satisfactory since no severe bleeding, moderate bleeding in 14 cases (21.9%) and mild bleeding in 50 cases (78.1%) were found as well as rigid bronchoscope was free. Conclusion:The central airway obstruction can be immediately relieved by cryorecanalization after cryosurgery via flexible bronchoscope with satisfactory effects and higher surgical safety. | Yongqun Li Huason g Feng Zhoushan Nie Jiguang Meng Xinmin Ding Zhihai Han | 2012 | The Chinese-German Journal of Clinical Oncology2012，11，8： | 0 |
| 4 | Clinical Study of Diagnosis and Treatment of Tuberculosis in Kidney Transplant Recipients显示文摘 | Siyang Chen Changxi Wang Fanhang Meng Lizhong Chen Jiguang Fei Suxiong Deng Jiang Qiu Jun Li Guodong Chen | 2009 | 器官移植内科学杂志2009，4，3： | 0 |
| 5 | Study of three rotating radio transients with FAST显示文摘Rotating radio transients(RRATs) are peculiar astronomical objects whose emission mechanism remains under investigation.In this paper, we present observations of three RRATs, J1538+2345, J1854+0306 and J1913+1330, carried out with the Fivehundred-meter Aperture Spherical radio Telescope(FAST). Specifically, we analyze the mean pulse profiles and temporal flux density evolutions of the RRATs. Owing to the high sensitivity of FAST, the derived burst rates of the three RRATs are higher than those in previous reports. RRAT J1854+0306 exhibited a time-dynamic mean pulse profile, whereas RRAT J1913+1330 showed distinct radiation and nulling segments on its pulse intensity trains. The mean pulse profile variation with frequency is also studied for RRAT J1538+2345 and RRAT J1913+1330, and the profiles at different frequencies could be well fitted with a cone-core model and a conal-beam model, respectively. | JiGuang Lu Bo Peng Kuo Liu Peng Jiang YouLing Yue Meng Yu Ye-Zhao Yu FeiFei Kou Lin Wang FAST Collaboration | 2019 | Science China(Physics,Mechanics & Astronomy)2019，62，5： | 0 |
| 6 | FAST ultra-wideband observation of abnormal emission-shift events of PSR B0919+06显示文摘PSR B0919+06 is known for its abnormal emission phenomenon, where the pulse emission window occasionally shifts progressively in longitude and returns afterwards. The physical mechanism behind this phenomenon is still under investigation. In this paper, we present our ultra-wideband observation of this pulsar using the Five-hundred-meter Aperture Spherical radio Telescope(FAST), with simultaneous measurements in the frequency ranges 280-780 and 1250-1550 MHz. We have identified three abnormal events, each of which becomes less apparent as the frequency decreases. At 1400 MHz, the averaged profile slightly shifted after the first and third abnormal events, implying a relationship between abnormal event and profile variation. We also found a linear trend in the left-edge position of the averaged profiles between the first and third events as well as after the third event, suggesting the existence of a slow-drifting mode between the two major events. The second event has a comparatively small shift in phase and is thus categorized as a 'small flare state'. During the third event, a sequence of approximately nine pulses was seen to significantly weaken in all frequency bands, likely associated with the pseudo-nulling observed at 150 MHz.A three-component de-composition analysis of the normal averaged profiles shows that the trailing component is dominant at our observing frequencies, while the centre component has a comparatively steeper spectrum. We found the overall flux density in an abnormal event to slightly differ from that in an ordinary state, and the difference shows a frequency dependence. A comparison of the normal, abnormal and dimmed averaged profile indicates that the leading component is likely to be stable in all states. | Ye-Zhao Yu Bo Peng Kuo Liu ChengMin Zhang Lin Wang FeiFei Kou JiGuang Lu Meng Yu FAST Collaboration | 2019 | Science China(Physics,Mechanics & Astronomy)2019，62，5： | 0 |
| 7 | The radiation structure of PSR B2016+28 observed with FAST显示文摘With the largest dish Five-hundred-meter Aperture Spherical radio Telescope(FAST), both the mean and single pulses of PSR B2016+28, especially including the single-pulse structure, are investigated in detail in this study. The mean pulse profiles at different frequencies can be well fitted in a conal model, and the peak separation of intensity-dependent pulse profiles increases with intensity. The integrated pulses are obviously frequency dependent(pulse width decreases by ~20% as frequency increases from 300 to 750 MHz), but the structure of single pulses changes slightly(the corresponding correlation scale decreases by only~1%). This disparity between mean and single pulses provides independent evidence for the existence of the RS-type vacuum inner gap, indicating a strong bond between particles on the pulsar surface. Diffused drifting sub-pulses are analyzed. The results show that the modulation period along pulse series(P_3) is positively correlated to the separation between two adjacent sub-pulses(P_2). This correlation may hint a rough surface on the pulsar, eventually resulting in the irregular drift of sparks. All the observational results may have significant implications in the dynamics of pulsar magnetosphere and are discussed extensively in this paper. | JiGuang Lu Bo Peng RenXin Xu Meng Yu Shi Dai WeiWei Zhu Ye-Zhao Yu Peng Jiang YouLing Yue Lin Wang FAST Collaboration | 2019 | Science China(Physics,Mechanics & Astronomy)2019，62，5： | 0 |
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