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| 1 | Strengthening effect of Cu-rich phase precipitation in 18Cr9Ni3CuNbN austenitic heat-resisting steel显示文摘The Cu-containing austenitic heat-resistant steel 18Cr9Ni3CuNbN, which is being used as superheater and reheater tube material for modern ultra-super-critical (USC) power plants all over the world, has been investigated at 650 ℃ long time aging till 10 000 h. SEM, TEM and 3DAP (three dimensional atom probe) have been used to follow microstructural changes with mechanical property variations. Experimental results show that Cu-rich phase and MX precipitate in the grains as well as M 23 C 6 precipitates at grain boundaries are the main precipitation strengthening phases in this steel. Among them Cu-rich phase is the most important strengthening phase. Homogeneous distribution of very fine nano-size Cu-rich phase has been formed at very early stage of 650 ℃ aging (less than 1 h). Cu atoms gradually concentrate to Cu-rich particles and the other elements (such as Fe, Cr, Ni etc) diffuse away from Curich particles to γ-matrix with the increasing of aging time at 650 ? C. The growth rate of Cu-rich phase at 650 ℃ long time aging is very slow and the average diameters of Cu-rich phase have been determined by TEM method. Cu-rich phase keeps in about 30 nm till 650 ℃ aging for 10 000 h. It shows that nano-size Cu-rich phase precipitation strengthening can be kept for long time aging at 650 ℃ because of its excellent stability at high temperatures. According to structure stability study and mechanical properties determination results the Cu-rich phase precipitation sequence and its strengthening mechanism model have been suggested and discussed. | Chengyu CHI Hongyao YU Jianxin DONG Xishan XIE Zhengqiang CUI Xiaofang CHEN Fusheng LIN | 2011 | Acta Metallurgica Sinica(English Letters)2011,24,2: | 6 |
| 2 | Study on vertical mandibular distraction osteogenesis using magnesium alloy on canine显示文摘The bone formation feasibility by a novel magnesium alloy device was evaluated using a canine vertical mandibular distraction osteogenesis(DO) model. Osteotomies were performed in the area where last 3 star's teeth of left mandibular were pulled out before 3 months. Both AZ31 magnesium alloy(n ? 6) and 316 L stainless steel(n ? 6) distraction devices were implanted. The distraction osteogenesis was carried out with a latency of 5 days after mandibular osteotomy. Distraction proceeded at a rate of 0.3 mm/8 h for 7 days and followed by 4 weeks of consolidations. The evaluations were conducted by scanning electron microscopy(SEM) and histological examinations. There were osteoblasts and trabecular bones formations manifestly in both groups. There was no significant difference in the bone mineral density between the two groups. The surface of the magnesium alloy was much more cracked and uneven, resulting from the surface pitting corrosion. The crew nails were closely combined with the surrounding bone tissue. AZ31 magnesium alloy exhibited a certain degradation rate in mandibular and did not post a negative effect on the kidney and liver. The observations in magnesium alloys group is consistent with the stainless steel group. | Chengyue Wang Shufeng Wang Yusheng Yao Fuzhai Cui | 2014 | Progress in Natural Science:Materials International2014,24,5: | 4 |
| 3 | Lacrimal sac diverticulum presenting as a lower eyelid mass with a secreting fistula显示文摘 | Zhang Chengyue Wu Qian Yu Jifeng Cui Yanhui Cao Wenhong Fan Yunwei Yu Gang | 2014 | Chinese Medical Journal2014,,18: | 4 |
| 4 | Computed tomography for guidance in the diagnosis and surgical correction of recurrent pediatric acute dacryocystitis显示文摘Importance:This is the first retrospective study of the effect of computed tomography(CT)in diagnosis and surgical correction of recurrent pediatric acute dacryocystitis(PAD).Objective:To explore the pathogenesis of recurrent PAD and the impact of CT in guidance of surgical planning.Methods:Medical histories,clinical manifestations,and CT results of 10 patients with recurrent PAD were reviewed.Etiologies and treatment effectiveness were recorded for all patients.results:CT revealed that three patients had congenital dacryocystocele with lacrimal sac cyst,enlargement of the nasolacrimal canal,and intranasal cyst of affected sides.After regression of local inflammation,marsupialization was performed.CT showed that four patients had PAD secondary to congenital nasolacrimal canal dysplasia;these patients exhibited normal upper portions of the nasolacrimal canals,but had stenotic or atretic middle and terminal segments.After improvement of local inflammation,endonasal dacryocystorhinostomy was performed.Three patients had PAD secondary to congenital lacrimal sac diverticulum;after contrast injection,CT showed that the cysts at the lacrimal sac area were filled with contrast,and were connected to the normal lacrimal sac.After the topical infection was controlled,transcutaneous dacryocystorhinostomy was performed in combination with excision of the lacrimal sac diverticulum.No recurrence of PAD was detected at 6-month follow-up.Interpretation:Causes of PAD include congenital dacryocystocele,congenital lacrimal sac diverticulum,or congenital nasolacrimal canal dysplasia.Marsupialization with endoscope,endonasal dacryocystorhinostomy,and transcutaneous dacryocystorhinostomy constitute distinct surgeries for PAD treatment.CT provides an important diagnostic function and facilitates selection of specific surgical approaches for recurrent PAD. | Chengyue Zhang Yanhui Cui Qian Wu Li Li | 2019 | Pediatric Investigation2019,3,1: | 3 |
| 5 | Hundred-Joule-level,nanosecond-pulse Nd:glass laser system with high spatiotemporal beam quality显示文摘A 100-J-level Nd:glass laser system in nanosecond-scale pulse width has been constructed to perform as a standard source of high-fluence-laser science experiments. The laser system, operating with typical pulse durations of 3–5 ns and beam diameter 60 mm, employs a sequence of successive rod amplifiers to achieve 100-J-level energy at 1053 nm at3 ns. The frequency conversion can provide energy of 50-J level at 351 nm. In addition to the high stability of the energy output, the most valuable of the laser system is the high spatiotemporal beam quality of the output, which contains the uniform square pulse waveform, the uniform flat-top spatial fluence distribution and the uniform flat-top wavefront. | Sensen Li Yulei Wang Zhiwei Lu Lei Ding Yi Chen Pengyuan Du Dexin Ba Zhenxing Zheng Xin Wang Hang Yuan Chengyu Zhu Weiming He Dianyang Lin Yongkang Dong Dengwang Zhou Zhenxu Bai Zhaohong Liu Can Cui | 2016 | High Power Laser Science and Engineering2016,4,1: | 3 |
| 6 | Influence of spacer insulator material temperature characteristics on its electric properties显示文摘Spacer insulators are important insulating component of gas insulated switchgear(GIS). In order to analyze the influence of spacer insulator materials temperature characteristics on the electric performance, we tested the temperature distribution under work condition and the temperature characteristics of the material's relative permittivity. Then established a spacer insulator simulation model in finite element numerical simulation software to calculate its temperature and electric field. Using the temperature test results as a reference to verify the temperature calculation, and in order to analyze changes of the electric field along the surface of the spacer insulator, the temperature characteristics of relative permittivity have to be considered. Through the experimental research and simulation analysis, we found that the temperature characteristics of the spacer insulator materials have great impacts on the spacer insulator performance. When the temperature increases, the material relative permittivity also increases. In the low-temperature region of spacer insulator, the electric field intensity along the surface increases, so the electrical performance deteriorates. The conclusion of this paper can provide an important reference for further research about spacer insulator's working performance analysis. | Yuyi Wu Chengyu Wang Yun Chen Boyuan Cui | 2019 | Global Energy Interconnection2019,2,1: | 2 |
| 7 | Remote sensing rock mechanics(RSRM) and associated experimental studies 显示文摘 | Wu Lixin Cui Chengyu Geng Naiguang | 2000 | Int J Rock Mech & Mining Sci2000,37,6: | 1 |
| 8 | A wearable real-time telemonitoring electrocardiogram device compared with traditional Holter monitoring显示文摘Arrhythmias are very common in the healthy populations as well as patients with cardiovascular diseases.Among them,atrial fibrillation(AF)and malignant ventricular arrhythmias are usually associated with some clinical events.Early diagnosis of arrhythmias,particularly AF and ventricular arrhythmias,is very important for the treatment and prognosis of patients.Holter is a gold standard commonly recommended for noninvasive detection of paroxysmal arrhythmia.However,it has some shortcomings such as fixed detection timings,delayed report and inability of remote real-time detection.To deal with such problems,we designed and applied a new wearable 72-hour triple-lead H3-electrocardiogram(ECG)device with a remote cloud-based ECG platform and an expertsupporting system.In this study,31 patients were recruited and 24-hour synchronous ECG data by H3-ECG and Holter were recorded.In the H3-ECG group,ECG signals were transmitted using remote real-time modes,and confirmed reports were made by doctors in the remote expert-supporting system,while the traditional modes and detection systems were used in the Holter group.The results showed no significant differences between the two groups in 24-hour total heart rate(HR),averaged HR,maximum HR,minimum HR,premature atrial complexes(PACs)and premature ventricular complexes(PVCs)(P>0.05).The sensitivity and specificity of capture and remote automatic cardiac events detection of PACs,PVCs,and AF by H3-ECG were 93%and 99%,98%and 99%,94%and 98%,respectively.Therefore,the long-term limb triple-lead H3-ECG device can be utilized for domiciliary ECG self-monitoring and remote management of patients with common arrhythmia under medical supervision. | Qin Shen Jianqing Li Chang Cui Xingyao Wang Hongxiang Gao Chengyu Liu Minglong Chen | 2021 | The Journal of Biomedical Research2021,35,3: | 1 |
| 9 | Remote sensing rock mechanics (RSRM) and associated experimental studies显示文摘 | Lixin Wu Chengyu Cui Naiguang Geng Jinzhuang Wang | 2000 | International Journal of Rock Mechanics and Mining Sciences2000,,6: | 1 |
| 10 | Remote sensing rock mechanics (RSRM) and associated experimental studies显示文摘 | Lixin Wu Chengyu Cui Naiguang Geng | 2000 | Rock Mechanics and Mining Sciences2000,37,: | 1 |
| 11 | A modified Sutherland equation for obtaining diffusivities in liquid and its effect on microstructure simulation of WC-Ti(C,N)-Co gradient cement-ed carbides显示文摘 | Chen Weimin Zhang Lijun Du Yong Liu Dandan Zhang Weibin Cui Senlin Tan Chengyu Wang Shequan Wen Guanghua Xie Wen | 2012 | Metall Mater Trans A2012,,: | 1 |
| 12 | Spatial beam shaping for high-power frequency tripling lasers based on a liquid crystal spatial light modulator显示文摘 | Sensen Li Yulei Wang Zhiwei Lu Lei Ding Can Cui Yi Chen Du Pengyuan Dexin Ba Zhenxing Zheng Hang Yuan Lei Shi Zhenxu Bai Zhaohong Liu Chengyu Zhu Yongkang Dong Luoxian Zhou | 2016 | Optics Communications2016,,: | 1 |
| 13 | Remote Sensing Rock Mechanics (RSRM) And As- sociated Experimental Studies 显示文摘 | WU Lixing CUI Chengyu GENG Nalguan | 2000 | International Journal of Rock Mechanics and Mining Sciences2000,37,6: | 1 |
| 14 | Theory and Experimental Results about the Application of Remote Sensing to Earthquake Prediction显示文摘In this paper,the theory for applying remote sensing to earthquake prediction has been elucidated and an experiment has been made.Through the experiment,it has been found that the characteristics and temperature of infrared radiant of rocks vary as a function of rock stress,the order of magnitude of radiance variation is 10-5(W/cm2 sr um),the amount of variation of the radiant temperature is 0.2℃~0.8℃ and some significant precursor information has been discovered.The experiment has verified preliminarily that the advanced technology of remote sensing can be applied to earthquake prediction. | Deng Mingde,Cui Chengyu and Geng NaiguangComprehensive Observation Brigade,SSB,Beijing 100039,ChinaInstitute of Remote Sensing Application,Academia Sinica,Beijing 100101,ChinaInstitute of Geophysics,SSB,Beijing 100081,China | 1995 | Earthquake Research in China1995,9,2: | 0 |