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| 1 | An equivalent source method for recovering and reconstructing the target sound field in a non-free field显示文摘In a non-free field,the existence of disturbing sources would destroy the free-field condition required by near-field acoustic holography,and confuse the identification of target source due to the scattering effect caused by disturbing sound falling on the target source.To totally remove the influence of disturbing source,a method for recovering and reconstructing the target sound field in a non-free field was proposed based on the equivalent source method and the pressure-velocity measurement.In the proposed method,the sound field separation technique was firstly used to separate the mixed sound field into the outgoing field coming from the target source and the incoming field coming from the disturbing source.Then the scattered component contained in the outgoing field was calculated by using the disturbing sound and the surface impedance of the target source.Finally,the sound field radiated by the target source in a free field was obtained by subtracting the scattered component from the outgoing field and was further used to reconstruct the sound field of the target source.The proposed method was numerically and experimentally testified and the results of both the simulation and the experiment demonstrated the validity of the proposed method. | HU Dingyu LI Zaiwei FANG Yu | 2017 | Chinese Journal of Acoustics2017，36，2： | 2 |
| 2 | A study of attenuation length of linear alkyl benzene as LS solvent 显示文摘 | Huang Pinwen Li Piyi Fu Zaiwei | 2010 | JINST2010，，： | 1 |
| 3 | Serum carbohydrate antigen-125 is elevated in patients with chronic atrial fibrillation显示文摘Objective: To determine whether CA-125 is elevated in medically stable patients with chronic atrial fibrillation (AF) compared with patients without AF and to examine whether levels of CA-125 are associated with demographic and clinical variables in a sample of patients under study. Methods: 55 patients with chronic AF and 58 control patients in sinus rhythm were included into the study. Patients with acute heart failure (HF), chronic inflammatory or neoplastic disease were excluded from the study. Circulating levels of CA-125 were assessed; all patients underwent clinical examination, assessment and medical records including demographic data, history of comorbid conditions, current use of cardiac medications, and the results of cardiac tests including electrocardiograms. Results: The mean age of the study sample was 53.2±6.5 years and 48% were men. Patients with sinus rhythm were significantly more likely to have lower heart rates, smaller dimensions of left atrium, and to be treated with aspirin. Coumadin, coumadin and digoxin were more often prescribed in patients with chronic AF. The CA-125 levels were significantly higher in patients with chronic AF than in patients in sinus rhythm (48.5±7.65 U/ml and 28.43±5.48 U/ml, P<0.005). An inverse relation was found between CA-125 levels and left ventricular ejection fraction (LVEF) (r=-0.48, P<0.001). CA-125 was significantly related to the left atrium (LA) diameter, left ventricular end-diastolic diameter (LVEDD), left ventricular end-systolic diameter (LVESD) and brain natriuretic peptide (BNP). There was no significant correlation between CA-125 and age. Conclusion: In subjects with chronic AF, CA-125 levels are increased; CA-125 was significantly related to the LA diameter, LVEDD, LVESD and BNP. | Pan Junqiang Zhang Dianxin Zhang Zaiwei Lu Ying Zhou Xin Li Guoliang Sun Chaofeng | 2012 | Journal of Medical Colleges of PLA(China)2012，27，5： | 1 |
| 4 | Vibro-acoustic analysis and optimization of damping structure with Response Surface Method 显示文摘 | Li Zaiwei Liang Xinhua | 2007 | Materials & Design2007，98，7： | 1 |
| 5 | Vibro-acoustic Analysis and Optimization of Damping Structure with Response Surface Method显示文摘 | Li Zaiwei Liang Xinhua | 2007 | Maters & Design2007，28，： | 1 |
| 6 | Direct methane conversion to methanol by ionic liquid -dissolved platinum catalysts显示文摘 | Cheng Jihong Li Zaiwei Haught Mark | 2006 | Chem Commun2006，44，： | 1 |
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