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Mechanism and management of burr entrapment：A nightmare of interven-tional cardiologists

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Journal of Geriatric Cardiology 2013年第3期10卷 230-234页

作者： Chia-Pin Lin Ji-Hung Wang Wen-Ling Lee po-ming ku Wei-Hsian Yin Ten-Ping Tsao Chi-Jen Chang The First Cardiovascular Division Department of Internal Medicine Chang Gung Memorial Hospital Chang Gung University College of Medicine No. 199 Tung-Hwa North Road Taipei Taiwan China Department of Cardiology Buddhist Tzu Chi General Hospital Hualien No. 707 Sec. 3 Chung Yang Rd. Hualien 970 Taiwan China Department of Cardiology Veterans General Hospital Taichung No.1650 Sec. 4 Taiwan Boulevard Xitun Dist. Taichung City 40705 Taiwan China Department of Cardiology Chi Mei Medical Center Tainan No. 901 Zhonghua Rd. Yongkang City Tainan County 710 Taiwan China Department of Cardiology Cheng Hsin General Hospital Taipei No.45 Cheng Hsin St. Pai-Tou Taipei 112 Taiwan China

Entrapment of the burr within calcified lesion is an uncommon, but serious complication during rotational atherectomy and usually needs surgical retrieval. We report a case series of this complication and also review the possible mechanisms, such as kokesi phenomenon or insufficient pecking motion with decreased rotational speed. We also review the potential techniques ever proposed to rescue this complica-tion percutaneously, including simple manual traction, balloon dilation to release the trap, snaring the burr as distal as possible for forceful local traction and wedging the burr with a child catheter to facilitate retrieval. Gentle pecking motion of the burr for sufficient ablation and shortening the run less than 15 s may avoid such complications. Interventional cardiologists using the rotablator should be familiar with the tips and tricks to avoid and rescue this complication.

关键词： Rotational atherectomy Complication Percutaneous coronary intervention

Dynamic response and optimization of an inclined steel rock shed by the graded energy dissipating method

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Journal of Mountain Science 2019年第1期16卷 138-152页

作者： WU Yong HE Si-ming LI Xin-po Wang Dong-po Key Laboratory of Mountain Hazards and Earth Surface Process Chinese Academy of Sciences Institute of Mountain Hazards and Environment Chinese Academy of Sciences State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology

Blocking rockfalls directly by reinforced concrete(RC) flat sheds with thick sand cushions is an outdated method. Such conventional sheds typically accumulate rock heavily, and become progressively damaged and are difficult to repair, and are very costly. To address these problems, we propose a new structure called a Graded Dissipating Inclined Steel Rock(GDISR) shed that utilizes the graded energy dissipation method. Here, we study the dynamic response of the GDISR shed with model test and numerical simulation, and give its optimization design combining with a practical engineering case. Our results show that the optimized modular E-block and corrugated steel tube can deform to sufficiently absorb the energy of different impact intensities. This efficiently and economically provides GDISR sheds with two security lines. Compared with conventional RC sheds, GDISR sheds with optimal incline have a more efficient anti-impact function, are faster and easier to repair, and are much simpler and cheaper to build.

关键词： Dynamic response Optimization design Graded dissipating inclined steel rock shed

Effect of Temperature, pH and Salt on Fluorescent Quality of Water Extractable Organic Matter in Black Soil

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Journal of Integrative Agriculture 2013年第7期12卷 1251-1257页

作者： LI ming-tang ZHAO Lan-po ZHANG Jin-jing College of Resource and Environmental Science Jilin Agricultural University

Water erosion is the major reason for the loss of soil organic carbon in the Northeast China, which leads to the soil quality deterioration and adjacent water pollution. In this study, the effect of extraction temperature, pH value, and salt on the water extractable organic matter （WEOM） was determined by means of the UV absorbance, fluorescence excitation-emission matrix, and derived fluorescence indexes. In general, the carbon content and aromaticity of WEOM increased with the increasing of extraction temperature, with the exception that there was no significant difference in the amount at 0 and 20℃. More fluorophores, especially microbially-derived organic matter were extracted at high temperature. The pH values of extractant, including 5, 7, and 10, showed no effect on the carbon amount of WEOM, whereas the aromaticity and microbially-derived component gradually increased with the increasing of pH values. The fluorescence intensity of humic acid-like fluorophore was stronger in neutral and alkali condition than that in acidic condition. The addition of 10 mmol L-1 CaCl2 significantly decreased the carbon amount of recovered WEOM. Moreover, it significantly decreased the aromaticity of WEOM and the quantity of fulvic acid-like and humic acid-like fluorophores, whereas increased the percentage of tyrosine-like and tryptophan-like fluorophores in the total fluorophores and the amount of microbially-derived organic matter. Generally, 10 mmol L-1 KCl showed the same influence trend, but with low influence degree.

关键词： black soil water extractable organic matter soil profile fluorescence spectroscopy

Generation and Applications of a Broad Atomic Oxygen Beam with a High Flux-Density via Collision-lnduced Dissociation of O_(2)

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Chinese Journal of Chemistry 2024年第17期42卷 2010-2016页

作者： Zhiqiang Han Liying Song po-Wan Shum Woon-ming Lau Beijing Advanced Innovation Center for Materials Genome Engineering Center for Green InnovationSchool of Mathematics and PhysicsUniversity of Science and Technology BeijingBeijing100083China Shunde Innovation School University of Science and Technology BejingFoshanGuangdong 528399China School of Chemistry and Chemical Engineering Linyi UniversityLinyiShandong 276000China The Sun Age(Guangdong)New Energy Ltd ZhuhaiGuangdong 519031China

We detail the generation of a pulsed atomic oxygen(AO)broad beam with a high flux-density via collision-induced dissociation of O_(2) to support practical industrial exploitation of AOs,particularly for facilitating 2-dimenstional oxidation/etching at a fast rate of one-monolayer per second in an area≥1000 cm².This innovation fuses the following interdisciplinary concepts:(a)a high density of O^(*) can be produced in an electron-cyclotron-resonance(ECR)O2 plasma;(b)o^(*) can be extracted and accelerated with an aperture-electrode in the plasma.

关键词： Collision Atomic oxygen Ab initio calculations lon-molecule reactions Gas-phase reactions

Precise Object Detection Using Iterative Superpixels Grouping Method

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Journal of Electronic Science and Technology 2017年第2期15卷 153-160页

作者： Cheng-Chang Lien Yu-Wei Lin Huan-po Hsu kun-ming Yu ming-Yuan Lei Department of Computer Science and infonnation Engineering Chung Hua University Hsinchu 300 Architecture and Building Research lnstitute New Taipci Citv 100

The region completeness of object detection is very crucial to video surveillance, such as the pedestrian and vehicle identifications. However, many conventional object detection approaches cannot guarantee the object region completeness because the object detection can be influenced by the illumination variations and clustering backgrounds. In order to overcome this problem, we propose the iterative superpixels grouping （ISPG） method to extract the precise object boundary and generate the object region with high completeness after the object detection. First, by extending the superpixel segmentation method, the proposed ISPG method can improve the inaccurate segmentation problem and guarantee the region completeness on the object regions. Second, the multi- resolution superpixel-based region completeness enhancement method is proposed to extract the object region with high precision and completeness. The simulation results show that the proposed method outperforms the conventional object detection methods in terms of object completeness evaluation.

关键词： Index Terms-lterative superpixels grouping method (ISPG) object completeness object detection superpixel video surveillance.

Gastrointestinal cytomegalovirus disease secondary to measles in an immunocompetent infant

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World Journal of Gastroenterology 2021年第25期27卷 3948-3950页

作者： Chao-ming Hung po-Huang Lee Hui-ming Lee Chong-Chi Chiu Department of General Surgery E-Da Cancer HospitalKaohsiung 82445Taiwan College of Medicine I-Shou UniversityKaohsiung 82445Taiwan Department of Surgery E-Da HospitalKaohsiung 82445Taiwan School of Medicine College of MedicineI-Shou UniversityKaohsiung 82445Taiwan

Yang et al reported an immunocompetent infant with gastrointestinal cytomegalovirus disease secondary to measles *** express our opinion about the diagnosis and treatment of this rare disease.

关键词： Gastrointestinal cytomegalovirus disease Measles Diarrhea Immunocompetent infant Rare disease

Coulomb Interaction in Quantum Dot with a Precessing Magnetic Field

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Communications in Theoretical Physics 2007年第5X期48卷 943-948页

作者： WU Liu-po ZHOU Shi-Ping SONG Hong-Yan SHI Yao-ming Department of Physics Shanghai University Shanghai 200444 China

We study electronic transport through a quantum dot （QD） with a precessing magnetic field. By using the Keldysh nonequilibrium Green function method, formulas of local density of states （LDOS） and conductance of QD are derived self-consistently. It shows that the LDOS and conductance have obvious changes with the Coulomb blockade interaction. The intensity and angle of the magnetic field or temperatures, which reflect the mesoscopic structure of the QD are derived. The superiority of this device is that the QD can be controlled easily by the magnetic field, so it is valuable to apply in generating, manipulating and probing spin state.

关键词： Coulomb interaction quantum dot precessing magnetic field

Numerical investigation of effects of “baffles-deceleration strip” hybrid system on rock avalanches

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Journal of Mountain Science 2019年第2期16卷 414-427页

作者： BI Yu-zhang HE Si-ming DU Yan-jun SHAN Jie YAN Shuai-xing WANG Dong-po SUN Xin-po Institute of Geotechnical Engineering of Southeast University School of Transportation Southeast University Key Laboratory of Mountain Hazards and Surface Process Chinese Academy of Sciences Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chinese Academy of Sciences Center for Excellence in Tibet Plateau Earth Sciences University of Chinese Academy of Sciences State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology College of civil engineering Sichuan University of Science and Engineering

Arrays of baffles are usually installed in front of protection site to attenuate the flow energy of rock avalanches in mountainous areas. Optimization design is crucial for efficiency promotion in hazard energy dissipation engineering. In this study, a deceleration strip was added in the baffles protection system to optimize the traditional baffles system. The effects of the "baffles-deceleration strip" hybrid protection system was discussed in detail with the nails number and nails angle. This study presents details of numerical experiments using the discreteelement method(DEM). The effect of the optimization of hybrid protection system(nail angle and nail number) were investigated specifically, especially the impact force that avalanches exerted on structures. The results show that the maximum impact forces and kinetic energy of the rock avalanches decreases with the increase of the number and angle of the nail. Moreover, the distance between the toe and the bearing structure(L_m) is also a key factor. The shorter the distance L_m(30 m) is, the higher the maximum impact force are. The longer the distance L_m(70 m) is, the lower the maximum impact force are. Under the same size of the nails, increasing the numbers can enhance the dissipation ability of the hybrid protection system. Meanwhile, increasing itsangle can also enhance the dissipation ability. There are three key ways for nails attenuate rock avalanches:(i) block the fine particles directly;(ii) form the particles bridge between nails and baffles;(iii) dissipate the coarse particles energy directly. The effect of segregation in rock avalanches is crucial for the energy dissipation mechanism, which is a key factor to optimize the traditional baffle system.

关键词： Rock avalanches Baffles Hybrid system Energy dissipation Impact force

Temperature Dependence of Abnormal Fano Resonance in Photon-Assisted Transport Through a Side-Coupled Quantum Dot

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Communications in Theoretical Physics 2008年第3期49卷 767-770页

作者： SONG Hong-Yan WU Liu-po SHI Yao-ming ZHOU Shi-Ping Department of Physics Shanghai University Shanghai 200444 China

We investigate transport through a perfect quantum wire with a side-coupled quantum dot under an ac field. Time-averaged complex conductance is formulated by using the nonequilibrium Green function （NGF） method. We find that the electron-photon interaction together with the quantum interference of electron wave function can lead to anti-resonance in the conductance, which is then useful for tuning coherence and phases of electrons. Meanwhile, we study the temperature dependence of the conductance. Interestingly, a peak-structure can be developed at the Fano resonance levels with increasing temperatures.

关键词： Fano resonance photon-assisted tunneling quantum dot