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Emergency design framework: a satellite preliminary scheme design

TENG Hongfei, WANG Yishou, ZHANG Bao

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 2,   Pages 184-192 doi: 10.1007/s11465-007-0031-9

Abstract: Against the background of the preliminary scheme design of satellite payloads, emergency design was studied

Keywords： significant     intelligence     P2P     hereinafter     computer cooperation    

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Design and preliminary evaluation of an exoskeleton for upper limb resistance training

Tzong-Ming WU, Dar-Zen CHEN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 2,   Pages 188-198 doi: 10.1007/s11465-012-0327-2

Abstract: The aim of this research is to perform a preliminary evaluation of the designed function by adopting

Keywords： exoskeleton     free-weight exercise     upper limb     motion analysis    

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A preliminary analysis and discussion of the condominium building collapse in surfside, Florida, US,

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1097-1110 doi: 10.1007/s11709-021-0766-0

Abstract: On June 24, 2021, a 40-year-old reinforced concrete flat plate structure building in Miami suffered a sudden partial collapse. This study analyzed the overall performance and key components of the collapsed building based on the building design codes (ACI-318 and GB 50010). Punching shear and post-punching performances of typical slab-column joints are also studied through the refined finite element analysis. The collapse process was simulated and visualized using a physics engine. By way of these analyses, weak design points of the collapsed building are highlighted. The differences between the reinforcement detailing of the collapsed building and the requirements of the current Chinese code are discussed, together with a comparison of the punching shear and post-punching performances. The simulated collapse procedure and debris distribution are compared with the actual collapse scenes.

Keywords： progressive collapse     flat plate     simulation     punching    

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A preliminary research on wireless cantilever beam vibration sensor in bridge health monitoring

Xinlong TONG, Shanglin SONG, Linbing WANG, Hailu YANG

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 2,   Pages 207-214 doi: 10.1007/s11709-017-0406-x

Abstract: According to specific bridge environment, optimal design piezoelectric cantilever beam structure by using results of theoretical calculations and simulation, verify natural frequencies of piezoelectric cantilever beam and production ability of data by experiment, thus formed a complete set of design method of piezoelectric cantilever beam. Considering natural frequency of vibration and intensity of the beam body, design a new type of piezoelectric cantilever beam structure. Paper analyzes the principle of sensor data acquisition and transmission, design a hardware integration system include signal conversion module, microcontroller module and wireless transmission module, test local read and wireless transmission for the combination structure of cantilever beam and data collection card, experimental verification of the radio piezoelectric vibrating cantilever vibration response is intact, the beam produced signal by vibration, acquisition card converts and wireless transmit data, this proved a good and intuitive linear response in simulation of bridge vibration test. Finally, the paper designed a kind of new wireless sensor of vibration cantilever beam, suitable for small bridge health monitoring based on Internet of things.

Keywords： piezoelectric cantilever beam     bridge     natural frequency     wireless sensor    

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Preliminary conclusions of construction technology in Xiamen Xiang’an subsea tunnel

Qu Shouxin

Strategic Study of CAE 2009, Volume 11, Issue 7,   Pages 24-29

Abstract: And there is a preliminary and brief conclusion for the construction of the Chinese first subsea tunnel

Keywords： Xiamen Xiang’an subsea tunnel     construction technology     preliminary conclusions of experience    

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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: control system is developed for passive exercise mode based on the derived inverse position solution, and preliminary

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

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Effects of Decoction on plasma proteome in cirrhosis: preliminary experimental study with rats

LIU Jie, WANG Jiyao, WEI Liming, LU Ye, Jin Hong

Frontiers of Medicine 2008, Volume 2, Issue 1,   Pages 39-44 doi: 10.1007/s11684-008-0008-z

Abstract: The aim of this paper is to study the effects of Decoction on the plasma proteome in cirrhotic rats. Twenty-six male Sprague-Dawley (SD) rats were randomly divided into three groups: cirrhotic model group ( = 10), treated with CCl (CCl/olive oil: v/v = 1:1); Decoction intervention group ( = 10), treated with CCl+ Decoction; and normal control group ( = 6), treated with olive oil only. After 8 weeks, blood samples were collected from the inferior vena cava to undergo bi-dimensional electrophoresis (2DE) and analysis by PDQuest 7.3 software. Differential protein spots were cut, enzyme hydrolysis was conducted, and peptide fragments extracted from the mixture underwent mass spectrometry (MS) with MALDI-TOF-TOF-MS. The liver fibrogenesis was assessed using a digital image analysis instrument of Masson’s trichrome stained sections. The fibrosis area of the Decoction was (8.9 ± 3.7)%, significantly smaller than that of the cirrhotic model group [(12.4 ± 4.7)%, < 0.05]. Ten markedly changed protein spots were identified by MALDI-TOF-TOF-MS. Eight of the 10 proteins, including plasma glutathione peroxidase, plasma glutathione peroxidase precursor, prealbumin, haptoglobin, apolipoprotein A-IV precursor, complement C4, inter-alpha-inhibitor H4 heavy chain, and serine/threonine-protein kinase microtubule-affinity regulating kinase 1 (MARK1) were expressed very lowly in the cirrhotic model group while they were expressed highly in the Decoction group. The expression of liver regeneration-related protein LRRG03 and vimentin increased in the cirrhotic model group, and reduced in the Decoction group. Some proteins related to oxidative stress, cell proliferation and transformation have changed in the plasma of cirrhosis induced by CCl. Decoction promotes protein synthesis and plays an anti-fibrotic role by anti-oxidation and accommodation of cell proliferation and transformation.

Keywords： Decoction intervention     serine/threonine-protein     underwent     Decoction     glutathione peroxidase    

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Capacity estimation and preliminary strategy for reducing the release of dioxins in China

YU Gang, ZHANG Qing, HUANG Jun, CAI Zhenxiao, SUI Qian

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1,   Pages 13-17 doi: 10.1007/s11783-007-0002-8

Abstract: As a party of the Stockholm Convention on Persistent Organic Pollutants, China must submit its national implementation plan (NIP) for this convention. The strategy and action plan for reducing the release of dioxins in China are the most important components of the NIP. Three problems are key points for developing such strategy and action plan what are the key sources for applying the best available technology/best environmental practice (BAT/BEP) to reduce the release of dioxins? How about the capacity for reducing the dioxins release from the key sources? Where are the areas of priority for applying BAT/BEP? This paper shows the efforts towards the solution of these problems. The list of key sources covering about half of the total dioxins release was determined considering four criteria. The capacity of key sources were estimated based on the difference between the emission factor corresponding to the actual situation in 2004 and that corresponding to the scenario that all key sources have been applied BAT/BEP to reduce the dioxins release. The priority analysis using the geographical information system (GIS) tool has revealed that eastern provinces should be of high priority in the future reduction activities of dioxins release in China.

Keywords： GIS     difference     capacity     scenario     implementation    

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Potential sources of unintentionally produced PCB, HCB, and PeCBz in China: A preliminary overview

Xiaotu Liu, Heidelore Fiedler, Wenwen Gong, Bin Wang, Gang Yu

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 6, doi: 10.1007/s11783-018-1036-9

Abstract:

A preliminary analysis of potential sources for unintentionally produced

Keywords： Unintentionally produced POPs     Polychlorinated biphenyls     Hexachlorobenzene     Pentachlorobenzene     sources of releases     Annual production activities    

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Study on forced air convection cooling for electronic assemblies

LI Bin, TAO Wenquan, HE Yaling

Frontiers in Energy 2008, Volume 2, Issue 2,   Pages 158-163 doi: 10.1007/s11708-008-0009-2

Abstract: Preliminary computation shows that this type of heat sink may be useful for the next generation of higher

Keywords： concept     slotted     air-cooling     Preliminary computation     generation    

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China ADS sub-critical experimental assembly—Venus-1 and preliminary experiment

SHI Yongqian, XIA Pu, LUO Zhanglin, ZHAO Zhixiang, DING Dazhao, ZHU Qinfu, XIA Haihong, LI Jigen, ZHANG Wei, CAO Jian, QUAN Yanhui, LUO Huangda, WU Xiaofei

Frontiers in Energy 2007, Volume 1, Issue 2,   Pages 150-157 doi: 10.1007/s11708-007-0019-5

Abstract: China s accelerator-driven sub-critical system (ADS) sub-critical experimental assembly Venus-1 and the preliminaryOn July 18, 2005, the first fuel element was loaded into the Venus-1 sub-critical assembly and some preliminary

Keywords： coupled     D-D reaction     dynamic     pulsed neutron     sub-critical assembly    

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Preliminary clinical study on non-transecting anastomotic bulbomembranous urethroplasty

Wei Le, Chao Li, Jinfu Zhang, Denglong Wu, Bo Liu

Frontiers of Medicine 2017, Volume 11, Issue 2,   Pages 277-283 doi: 10.1007/s11684-017-0515-x

Abstract:

This study aims to investigate the effect of non-transecting anastomotic urethroplasty for treatment of posterior urethral stricture. A total of 23 patients with traumatic posterior urethral stricture were enrolled and then divided into two groups. In one group, 12 patients underwent non-transecting anastomotic urethroplasty. In the other group, 11 patients underwent conventional posterior urethra end-to-end anastomosis. The effect of operation was evaluated using the following parameters: the bleeding amount during operation, operation time, IIEF-5 scores after operation, maximum flow rate (Qmax), and rating scale of quality of life (QoL). The comparison between the conventional posterior urethra end-to-end anastomosis group and the non-transecting anastomotic urethroplasty group showed no significant difference with regard to average operation time. However, a significant difference was observed between the groups with regard to the bleeding amount during operation. The patients in the group of non-transecting anastomotic urethroplasty urinated smoothly after the removal of catheter. Meanwhile, one patient from the group of conventional posterior urethra end-to-end anastomosis had difficulty urinating after the removal of catheter. Furthermore, significant differences in the operation time, bleeding amount during operation, IIEF-5 scores after operation, and rating scale of QoL were observed, whereas no significant difference was observed between urine flow rates of the two groups after operation. Overall, non-transecting anastomotic urethroplasty is effective for posterior urethra reconstruction, and it can reduce the occurrence rate of erectile dysfunction after operation.

Keywords： anastomotic urethroplasty     transecting     posterior urethra reconstruction    

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Preliminary design of an SCO conversion system applied to the sodium cooled fast reactor

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 832-841 doi: 10.1007/s11708-021-0777-5

Abstract: The supercritical carbon dioxide (SCO2) Brayton cycle has become an ideal power conversion system for sodium-cooled fast reactors (SFR) due to its high efficiency, compactness, and avoidance of sodium-water reaction. In this paper, the 1200 MWe large pool SFR (CFR1200) is used as the heat source of the system, and the sodium circuit temperature and the heat load are the operating boundaries of the cycle system. The performance of different SCO2 Brayton cycle systems and changes in key equipment performance are compared. The study indicates that the inter-stage cooling and recompression cycle has the best match with the heat source characte-ristics of the SFR, and the cycle efficiency is the highest (40.7%). Then, based on the developed system transient analysis program (FR-Sdaso), a pool-type SFR power plant system analysis model based on the inter-stage cooling and recompression cycle is established. In addition, the matching between the inter-stage cooling recompression cycle and the SFR during the load cycle of the power plant is studied. The analysis shows that when the nuclear island adopts the flow-advanced operation strategy and the carbon dioxide flowrate in the SCO2 power conversion system is adjusted with the goal of maintaining the sodium-carbon dioxide heat exchanger sodium side outlet temperature unchanged, the inter-stage cooling recompression cycle can match the operation of the SFR very well.

Keywords： sodium-cooled fast reactor (SFR)     supercritical carbon dioxide (SCO2)     brayton cycle     load cycle    

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Inspirations from nature——Preliminary discussion of wood bionics

Li Jian and Sun Qingfeng

Strategic Study of CAE 2014, Volume 16, Issue 4,   Pages 4-12

Abstract:

Inherently intelligent behaviors and uniquely natural attributes of some organisms in nature were specifically listed in this paper. Inspired by nature，the theoretical foundation for constructing wood bionics was preliminarily stated. Under the guidance of biology and current technology，wood will be endowed with some untraditional properties and newly innovated wood-based materials will possess a much larger developing space.

Keywords： wood     bionics     superhydrophobicity     aerogel     intelligence     interface    

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Preliminary study on preparation of cell-free system for protein expression

CHEN Haiqin, XU Zhinan, WANG Cheng, CEN Peilin, LIAO Yuhua

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 2,   Pages 224-229 doi: 10.1007/s11705-008-0029-9

Abstract: In the new era of “Omics”, the traditional techniques of protein expression in vivo can not come up with the exponential increase of genetic information. The cell-free protein synthesis system provides a new strategy of protein expression with advantages of rapid, convenient and high-throughput expression. The preparation of cell extracts, the optimization of substrate concentrations and the energy regeneration system are the key factors for the successful construction of cell-free protein expression system. In this work, the cell extract was prepared from RNase I- defective strain A19. The cell growth phase, the pressure for cell disruption and the storage condition of cell extracts were optimized. Meanwhile, the optimal substrate concentrations and the energy regeneration system were selected. Under the optimized conditions, the green fluorescent protein (GFP) reporter gene was expressed in the cell-free system with high expression level (Ca. 154 ?g/mL) which was 29 times higher than the expression level before optimization.

Keywords： cell-free     regeneration     extract     information     successful construction    

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Title Author Date Type Operation

Emergency design framework: a satellite preliminary scheme design

TENG Hongfei, WANG Yishou, ZHANG Bao

Journal Article

Design and preliminary evaluation of an exoskeleton for upper limb resistance training

Tzong-Ming WU, Dar-Zen CHEN

Journal Article

A preliminary analysis and discussion of the condominium building collapse in surfside, Florida, US,

Journal Article

A preliminary research on wireless cantilever beam vibration sensor in bridge health monitoring

Xinlong TONG, Shanglin SONG, Linbing WANG, Hailu YANG

Journal Article

Preliminary conclusions of construction technology in Xiamen Xiang’an subsea tunnel

Qu Shouxin

Journal Article

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

Journal Article

Effects of Decoction on plasma proteome in cirrhosis: preliminary experimental study with rats

LIU Jie, WANG Jiyao, WEI Liming, LU Ye, Jin Hong

Journal Article

Capacity estimation and preliminary strategy for reducing the release of dioxins in China

YU Gang, ZHANG Qing, HUANG Jun, CAI Zhenxiao, SUI Qian

Journal Article

Potential sources of unintentionally produced PCB, HCB, and PeCBz in China: A preliminary overview

Xiaotu Liu, Heidelore Fiedler, Wenwen Gong, Bin Wang, Gang Yu

Journal Article

Study on forced air convection cooling for electronic assemblies

LI Bin, TAO Wenquan, HE Yaling

Journal Article

China ADS sub-critical experimental assembly—Venus-1 and preliminary experiment

SHI Yongqian, XIA Pu, LUO Zhanglin, ZHAO Zhixiang, DING Dazhao, ZHU Qinfu, XIA Haihong, LI Jigen, ZHANG Wei, CAO Jian, QUAN Yanhui, LUO Huangda, WU Xiaofei

Journal Article

Preliminary clinical study on non-transecting anastomotic bulbomembranous urethroplasty

Wei Le, Chao Li, Jinfu Zhang, Denglong Wu, Bo Liu

Journal Article

Preliminary design of an SCO conversion system applied to the sodium cooled fast reactor

Journal Article

Inspirations from nature——Preliminary discussion of wood bionics

Li Jian and Sun Qingfeng

Journal Article

Preliminary study on preparation of cell-free system for protein expression

CHEN Haiqin, XU Zhinan, WANG Cheng, CEN Peilin, LIAO Yuhua

Journal Article