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Observation of premixed flame fronts by laser tomography

MU Kejin, WANG Yue, LEI Yu, ZHANG Zhedian, NIE Chaoqun, XIAO Yunhan

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 427-432 doi: 10.1007/s11708-008-0069-3

Abstract: The principle of combustion field detection by using laser tomography, as well as exploitation of thelaser tomography apparatus and the tool for image processing is described.An experiment detecting flame fronts by laser tomography was made by employing a V-shaped premixed flameflame fronts are precisely tracked through active contour models (ACM) from the digital images of laser tomography

Keywords： combustion     tomography apparatus     processing     exploitation     propagation    

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A miniature triaxial apparatus for investigating the micromechanics of granular soils with

Zhuang CHENG, Jianfeng WANG, Matthew Richard COOP, Guanlin YE

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 357-373 doi: 10.1007/s11709-019-0599-2

Abstract: The development of a miniature triaxial apparatus is presented.In conjunction with an X-ray micro-tomography (termed as X-ray μCT hereafter) facility and advanced imageprocessing techniques, this apparatus can be used for investigation of the micro-scale mechanicalThe apparatus allows for triaxial testing of a miniature dry sample with a size of (diameter heightThe developed triaxial apparatus, in its combined use of X-ray μCT imaging techniques, is a powerful

Keywords： triaxial apparatus     X-ray μCT     in situ test     micro-scale mechanical behavior     granular soils    

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Multislice computed tomography angiography in the diagnosis of cardiovascular disease: 3D visualizations

Zhonghua Sun

Frontiers of Medicine 2011, Volume 5, Issue 3,   Pages 254-270 doi: 10.1007/s11684-011-0153-7

Abstract: Multislice computed tomography (CT) has been widely used in clinical practice for the diagnosis of cardiovascular

Keywords： cardiovascular disease     multislice computed tomography     three-dimensional reconstruction     diagnosis     visualization    

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A multi-probe micro-fabrication apparatus based on the friction-induced fabrication method

Zhijiang WU, Chenfei SONG, Jian GUO, Bingjun YU, Linmao QIAN

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 333-339 doi: 10.1007/s11465-013-0276-4

Abstract:

A novel multi-probe micro-fabrication apparatus was developed based on the friction-induced fabricationThe main parts of the apparatus include actuating device, loading system, and control system.As a low-cost and high efficiency fabrication device, the multi-probe micro-fabrication apparatus may

Keywords： friction-induced fabrication     silicon     surface texture     friction     multi-probe    

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Optimum design and preliminary experiments of a novel parallel end traction apparatus for upper-limb

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 726-746 doi: 10.1007/s11465-021-0651-5

Abstract: This paper introduces a novel parallel end traction apparatus (PETA) to supplement equipment selection

Keywords： parallel mechanism     upper-limb rehabilitation     singularity and workspace analyses     performance evaluation     optimum design    

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Near-infrared fluorescent probe for fast track of cyclooxygenase-2 in Golgi apparatus in cancer cells

Bhaskar Gurram, Miao Li, Jiangli Fan, Jingyun Wang, Xiaojun Peng

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 1,   Pages 41-52 doi: 10.1007/s11705-019-1796-1

Abstract: Cyclooxygenase-2 (COX-2) has been used as an excellent traceable biomarker, and exists maximally in Golgi apparatusSubcellular localization of the NB-C6-CCB preferentially points to the Golgi apparatus and increases

Keywords： cyclooxygenase-2     nile blue     CCB     Golgi apparatus     NIR imaging    

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A Breakthrough in Pressure Generation by a Kawai-Type Multi-Anvil Apparatus with Tungsten Carbide Anvils Review

Takayuki Ishii, Zhaodong Liu, Tomoo Katsura

Engineering 2019, Volume 5, Issue 3,   Pages 434-440 doi: 10.1016/j.eng.2019.01.013

Abstract:

Expansion of the pressure range of Kawai-type multi-anvil presses (KMAPs) with tungsten carbide (WC) anvils is called for, especially in the field of Earth science. However, no significant progress in pressure generation has been made for 40 years. Our recent studies have expanded the pressure generation of a KMAP with WC anvils to 65 GPa, which is the world record for high-pressure generation in this device and is more than 2.5 times higher than conventional pressure generation. We have also successfully generated pressures of about 50 GPa at high temperatures. This work reviews our recently developed technology for high-pressure generation. High-pressure generation at room temperature and at high temperature was attained by integration of the following techniques: ① a precisely aligned guide-block system, ② a high degree of hardness of the second-stage anvils, ③ tapering of the second-stage anvil faces, ④ a high-pressure cell consisting of materials with a high bulk modulus, and ⑤ high thermal insulation of the furnace. Our high-pressure technology will facilitate investigation of the phase stability and physical properties of materials under the conditions of the upper part of the lower mantle, and will permit the synthesis and characterization of novel materials.

Keywords： High pressure     Multi-anvil apparatus     Tungsten carbide anvil     Sintered diamond anvil     Lower mantle    

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of plotting sensor sensitivity field and image reconstruction algorithm for electrical capacitance tomography

CHEN De-yun, YANG Cong-jing, ZHENG Gui-bin, YU Xiao-yang, SUN Li-juan

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 2,   Pages 242-247 doi: 10.1007/s11465-006-0008-0

Abstract: Sensor sensitivity field in electrical capacitance tomography is affected by the distribution of multiphase

Keywords： multiphase     unequal interval     capacitance tomography     pattern     sensitivity    

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Ambient Noise Tomography for Coral Islands Article

Shaohong Xia, Changrong Zhang, Jinghe Cao

Engineering 2023, Volume 25, Issue 6,   Pages 182-193 doi: 10.1016/j.eng.2021.09.022

Abstract: While ambient noise tomography with dense arrays has been widely used in continental regions, its applicabilitynoise characteristics and obtained a 3D subsurface structure of the coral island using ambient noise tomographyOur research demonstrates that ambient noise tomography is a potentially economical, efficient, and environmentally

Keywords： Coral island     Ambient noise tomography     Engineering geology     South China Sea    

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properties of municipal solid waste incineration residues with cement and coal fly ash using X-ray Computed Tomography

Toshifumi MUKUNOKI, Ta Thi HOAI, Daisuke FUKUSHIMA, Teppei KOMIYA, Takayuki SHIMAOKA

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 640-652 doi: 10.1007/s11709-018-0502-6

Abstract: Couple of industrial and micro-focus X-ray computed tomography (CT) scanners combined with an image analysisThree-dimension computed tomography images observation and analysis confirmed that solidified incineration

Keywords： waste incineration residues     coal fly ash     unconfined compression test     image analysis     X-Ray Computed Tomography    

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Simultaneous acquisition of CT angiography and whole brain CT perfusion images by using multiphase dynamic helical scan on 16 MDCT

Weiwei CHEN, Jianpin QI, Wenzhen ZHU, Wenhua HUANG, Jinmei SONG

Frontiers of Medicine 2009, Volume 3, Issue 2,   Pages 230-235 doi: 10.1007/s11684-009-0023-8

Abstract: We implemented a new protocol — multiphase dynamic helical scan to acquire CT angiography (CTA) and whole brain CT perfusion (CTP) images simultaneously with single scan on 16 multidetector CT (MDCT). A total of 90 patients who were randomly assigned into 3 groups were included in our study. Each group underwent CT scan by using the new protocol, traditional CTA and CTP protocol, respectively. The image quality of CTA, the CTP parameter values and the X-ray doses were measured and compared between the new protocol and the traditional protocols. There was no statistically significant difference in the CTA image quality between the above methods ( =0.55). For CTP parameters, the new protocol tended to overestimate the blood volume (BV) and blood flow (BF) value, and to underestimate the mean transit time (MTT) value compared with the traditional method. However, there was no statistically significant difference in BV, BF, and MTT value between the two methods except permeability surface (PS) ( >0.05). The volume CT dose index (CTDIvol) and dose length product (DLP) of our protocol were lower than the traditional one. The new protocol can obtain valuable diagnostic information in a shorter time without significant compromise in image quality. In addition, it reduces the radiation dose as well as contrast medium usage on the patient.

Keywords： computed tomography angiography     computed tomography perfusion    

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Fatigue of asphalt binder, mastic and mixture at low temperature

Dong WANG, Linbing WANG, Guoqing ZHOU

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 2,   Pages 166-175 doi: 10.1007/s11709-012-0157-7

Abstract: The fatigue damage is one of the most common distresses observed on the asphalt concrete pavement. To thoroughly understand the fatigue of asphalt concrete, the behaviors of the major components of asphalt concrete under cyclic loading are investigated respectively in this study. A new experiment method is developed to evaluate the performances of asphalt binder, mastic and fine aggregates mixture under cyclic tensile loading. The fatigue test results of asphalt binder show that the fatigue performance of asphalt binder is closely related with loading magnitude, temperature and loading rate. Mastic specimens with different filler content are tested and the results indicate that mastic specimens with 30% filler content show better fatigue resistance and higher permanent strain. The micro-structure analysis of mastic and mixture indicates that the fatigue resistance is closely related with the air void content of specimen. 3D digital specimens are developed to model the fatigue of the asphalt binder, mastic and mixture specimens based on the finite element method (FEM). Fatigue damage of asphalt concrete is simplified by a damage model. With proper selection of damage parameters, the simulation results agree well with laboratory test results and can be used as a basis for future fatigue research.

Keywords： fatigue     asphalt mixture     asphalt binder     mastic     finite element method (FEM)     X-ray tomography    

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Early Identification of Abnormal Regions in Rock-Mass Using Traveltime Tomography Article

Longjun Dong,Zhongwei Pei,Xin Xie,Yihan Zhang,Xianhang Yan

Engineering 2023, Volume 22, Issue 3,   Pages 191-200 doi: 10.1016/j.eng.2022.05.016

Abstract: To meet the high-accuracy detection requirements of underground engineering, this paper proposes a tomographymethod for abnormal region identification in complex rock-mass structures that utilizes traveltime tomographyThis paper not only realizes the application of abnormal region identification using traveltime tomography

Keywords： Underground engineering     Traveltime tomography     Complex structures     Abnormal region identification     Ray    

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A new method of studying collapsibility of loess

Yuanqing ZHU , Zhenghan CHEN ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 305-311 doi: 10.1007/s11709-009-0040-3

Abstract: The apparatus could measure volume change precisely and keep the deviator stress unvaried, as well asA triaxial collapsible testing procedure was described using the new apparatus for undisturbed collapsibleThe new triaxial apparatus was a useful facility to study the collapsible behavior of loess.

Keywords： triaxial apparatus for collapsible soils     controlled suction     pressure/volume controlled equipment     double    

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Low-dose CT for lung cancer screening: opportunities and challenges

Hongbing Shen

Frontiers of Medicine 2018, Volume 12, Issue 1,   Pages 116-121 doi: 10.1007/s11684-017-0600-1

Abstract: However, minimal progress was achieved until recently, when low-dose spiral computed tomography (LDCT

Keywords： lung cancer     low-dose computerized tomography     early detection     opportunities     challenges    

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Title Author Date Type Operation

Observation of premixed flame fronts by laser tomography

MU Kejin, WANG Yue, LEI Yu, ZHANG Zhedian, NIE Chaoqun, XIAO Yunhan

Journal Article

A miniature triaxial apparatus for investigating the micromechanics of granular soils with

Zhuang CHENG, Jianfeng WANG, Matthew Richard COOP, Guanlin YE

Journal Article

Multislice computed tomography angiography in the diagnosis of cardiovascular disease: 3D visualizations

Zhonghua Sun

Journal Article

A multi-probe micro-fabrication apparatus based on the friction-induced fabrication method

Zhijiang WU, Chenfei SONG, Jian GUO, Bingjun YU, Linmao QIAN

Journal Article

Optimum design and preliminary experiments of a novel parallel end traction apparatus for upper-limb

Journal Article

Near-infrared fluorescent probe for fast track of cyclooxygenase-2 in Golgi apparatus in cancer cells

Bhaskar Gurram, Miao Li, Jiangli Fan, Jingyun Wang, Xiaojun Peng

Journal Article

A Breakthrough in Pressure Generation by a Kawai-Type Multi-Anvil Apparatus with Tungsten Carbide Anvils

Takayuki Ishii, Zhaodong Liu, Tomoo Katsura

Journal Article

of plotting sensor sensitivity field and image reconstruction algorithm for electrical capacitance tomography

CHEN De-yun, YANG Cong-jing, ZHENG Gui-bin, YU Xiao-yang, SUN Li-juan

Journal Article

Ambient Noise Tomography for Coral Islands

Shaohong Xia, Changrong Zhang, Jinghe Cao

Journal Article

properties of municipal solid waste incineration residues with cement and coal fly ash using X-ray Computed Tomography

Toshifumi MUKUNOKI, Ta Thi HOAI, Daisuke FUKUSHIMA, Teppei KOMIYA, Takayuki SHIMAOKA

Journal Article

Simultaneous acquisition of CT angiography and whole brain CT perfusion images by using multiphase dynamic helical scan on 16 MDCT

Weiwei CHEN, Jianpin QI, Wenzhen ZHU, Wenhua HUANG, Jinmei SONG

Journal Article

Fatigue of asphalt binder, mastic and mixture at low temperature

Dong WANG, Linbing WANG, Guoqing ZHOU

Journal Article

Early Identification of Abnormal Regions in Rock-Mass Using Traveltime Tomography

Longjun Dong,Zhongwei Pei,Xin Xie,Yihan Zhang,Xianhang Yan

Journal Article

A new method of studying collapsibility of loess

Yuanqing ZHU , Zhenghan CHEN ,

Journal Article

Low-dose CT for lung cancer screening: opportunities and challenges

Hongbing Shen

Journal Article