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| 1 | Evacuated tube transport technologies (ET3)^(tm):a maximum value global transportation network for passengers and cargo显示文摘Evacuated Tube Transport Technologies(ET3) offers the potential for more than an order of magnitude improvement in transportation efficiency,speed,cost,and effectiveness.An ET3 network may be optimized to sustainably displace most global transportation by car,ship,truck,train,and jet aircraft.To do this,ET3 standards should adhere to certain key principals:maximum value through efficiency,reliability,and simplicity;equal consideration for passenger and cargo loads;optimum size;high speed/high frequency operation;demand oriented;random accessibility;scalability;high granularity;automated control;full speed passive switching;open standards of implementation;and maximum use of existing capacities,materials,and processes. | Daryl OSTER Masayuki KUMADA Yaoping ZHANG | 2011 | Journal of Modern Transportation2011，19，1： | 25 |
| 2 | Numerical simulation and analysis of aerodynamic drag on a subsonic train in evacuated tube transportation显示文摘The aerodynamic drag on a train running in an evacuated tube varies with tube air pressure,train speed and shape,as well as blockage ratio.This paper uses numerical simulations to study the effects of different factors on the aerodynamic drag of a train running at subsonic speed in an evacuated tube.Firstly,we present the assumption of a steady state,two dimensional,incompressible viscous flow with lubricity wall conditions.Subsequently,based on the Navier-Stokes equation and the k-ε turbulent models,we calculate the aerodynamic drag imposed on the column train with a 3-meter diameter running under different pressure and blockage ratio conditions in an evacuated tube transportation (ETT) system.The simulation is performed with FLUENT 6.3 software package.An analyses of the simulation results suggest that the blockage ratio for ETT should be in the range of 0.25-0.7,and the tube internal diameter in the range of 2-4 m,with the feasible vacuum pressure in the range of 1-10 000 Pa for the future subsonic ETT trains. | Yaoping ZHANG | 2012 | Journal of Modern Transportation2012，20，1： | 18 |
| 3 | Key vacuum technology issues to be solved in evacuated tube transportation显示文摘Evacuated tube transportation(ETT) will be one of the ultra-large-scale vacuum application areas.This paper lists some key vacuum technology issues in ETT:(1) how to construct ultra-large-scale vacuum chamber with lower cost and high reliability,(2) how to evacuate gas out of the ETT tube in short time,(3) how to release heat or reduce temperature in the vacuum tube,(4) how to avoid vacuum discharge,(5) how to make vehicles with airproof shells and life support system,and(6) how to detect leaks and find leak positions efficiently.At the same time,some solutions are proposed. | Yaoping ZHANG Daryl OSTER Masayuki KUMADA Jianye YU Shengshan LI | 2011 | Journal of Modern Transportation2011，19，2： | 13 |
| 4 | Ecosystem carbon storage under different scenarios of land use change in Qihe catchment,China显示文摘Regional land use change is the main cause of the ecosystem carbon storage changes by affecting emission and sink process.However,there has been little research on the influence of land use changes for ecosystem carbon storage at both temporal and spatial scales.For this study,the Qihe catchment in the southern part of the Taihang Mountains was taken as an example;its land use change from 2005 to 2015 was analyzed,the Markov-CLUE-S composite model was used to predict land use patterns in 2025 under natural growth,cultivated land protection and ecological conservation scenario,and the land use data were used to evaluate ecosystem carbon storage under different scenarios for the recent 10-year interval and the future based on the carbon storage module of the In VEST model.The results show the following:(1) the ecosystem carbon storage and average carbon density of Qihe catchment were 3.16×107 t and 141.9 t/ha,respectively,and decreased by 0.07×107 t and 2.89 t/ha in the decade evaluated.(2) During 2005–2015,carbon density mainly decreased in low altitude areas.For high altitude area,regions with increased carbon density comprised a similar percentage to regions with decreased carbon density.The significant increase of the construction areas in the middle and lower reaches of Qihe and the degradation of upper reach woodland were core reasons for carbon density decrease.(3) For 2015–2025,under natural growth scenario,carbon storage and carbon density also significantly decrease,mainly due to the decrease of carbon sequestration capacity in low altitude areas;under cultivated land protection scenario,the decrease of carbon storage and carbon density will slow down,mainly due to the increase of carbon sequestration capacity in low altitude areas;under ecological conservation scenario,carbon storage and carbon density significantly increase and reach 3.19×107 t and 143.26 t/ha,respectively,mainly in regions above 1100 m in altitude.Ecological conservation scenario can enhance carbon sequestration capacity but cannot effectively control the reduction of cultivated land areas.Thus,land use planning of research areas should consider both ecological conservation and cultivated land protection scenarios to increase carbon sink and ensure the cultivated land quality and food safety. | ZHU Wenbo ZHANG Jingjing CUI Yaoping ZHU Lianqi | 2020 | Journal of Geographical Sciences2020，30，9： | 12 |
| 5 | Topographical relief characteristics and its impact on population and economy:A case study of the mountainous area in western Henan,China显示文摘Topographical relief is a key factor that limits population distribution and economic development in mountainous areas.The limitation is especially apparent in the mountain?plain t「ansition zone.Taking the transition zone between the Qinling Mountains and the North China Plain(i.e.the mountainous area in western Henan Province)as an example and based on the 200-m resolution DEM data,we used the mean change-point analysis to determine the optimal statistical unit for topographical relief,and thereafter extracted the relief degree.Taking the 1:100,000 land use data,township population and county-level industrial data,population and economic spatial models were constructed,and 200?m resolution grid population and economic density maps were gen erated.Afterwards,statistical analysis was carried out to quantitatively reveal the impact of topographical relief on population and economy.In addition,the impacts of other topographical factors were discussed.The results showed the following.(1)The relief degree in western Henan is generally low,where 58.6%of the regional topography does not exceed half the height of a reference mountain(relative elevation W250 m).Spatially,the relief degree is high in the west while low in the east,and high in the middle while low in the north and south.There is a positive correlation between relief degree and elevation,and a much stronger correlation between relief degree and slope.(2)The linear fitting degree between the population and economic validation data and the corresponding simulation data are 0.943 and 0.909,respectively,indicating that the spatialized results can reflect the actual population and economic distribution.(3)The impact of topographical relief on population and economy was stronger than that of other topographical factors.The relief degree showed a good logarithmic fit relati on ship with population density(0.911)and economic density(0.874).Specifically,88.65%of the population lives in areas where the topographical relief is W0.5 and 88.03%of the gross regional product was from areas where the relief is W0.3.Compared with the population distribution,the economic development showed an obvious agglomeration trend towards low relief areas. | ZHANG Jingjing ZHU Wenbo ZHU Lianqi CUI Yaoping HE Shasha REN Han | 2019 | Journal of Geographical Sciences2019，29，4： | 8 |
| 6 | 深红红螺菌draTGB hupL双突变株在不同光照条件下的放氢显示文摘为提高深红红螺菌(Rhodospirillumrubrum)在两阶段培养条件下的放氢量,分别构建了缺失吸氢酶大亚基基因hupL的单突变株R.rubrumUR801和缺失固氮酶活性调节因子基因draTGB与hupL的双突变株R.rubrumUR805.对比测试了这两个突变株与野生型菌株R.rubrumUR2和UR472(ΔdraTGB)在不同光照条件下的放氢量.结果表明,在持续光照条件下,R.rubrumUR801的氢产量最高,可达5700mL/L,分别为R.rubrumUR2,UR472和UR805氢产量的1.56,2.24和2.32倍;而在两阶段培养条件下,R.rubrumUR805的氢产量最高,可达4303mL/L,分别为相同条件下R.rubrumUR2,UR801和UR472氢产量的1.35,1.21和1.04倍.据此,R.rubrumUR805有望作为两阶段培养条件下大量放氢的菌株. | 朱瑞艳 王迪 Yaoping Zhang 李季伦 | 2006 | 科学通报2006，51，17： | 5 |
| 7 | Discrimination of oolong tea ( Camellia sinensis ) varieties based on feature extraction and selection from aromatic profiles analysed by HS-SPME/GC–MS显示文摘 | Jie Lin Pan Zhang Zhiqiang Pan Hairong Xu Yaoping Luo Xiaochang Wang | 2013 | Food Chemistry2013，，1： | 2 |
| 8 | A Compact Implementation of AES S-Box Using Evolutionary Algorithm显示文摘S-Box based on Composite field arithmetic(CFA) technology is optimized by Genetic algorithm(GA)and Cartesian genetic programming(CGP) model for reducing the hardware complexity. After using the CFA technique to map Multiplicative inverse(MI) over GF(2~8)into composite field GF((2~4)~2), the compact MI circuit over GF(2~4) is selected from 100 evolved circuits, and same design method is applied to the compact multiplication circuit over GF(2~2). Compared with the direct implementations, the areas of optimized circuits of MI over GF(2~4) and multiplication over GF((2~2)2) are reduced by66% and 57.69%, respectively. The area reductions for MI over GF(2~8) and the whole of S-Box are up to 59.23%and 56.14%, separately. In 180 nm 1.8V COMS technology,compared to previous works, the S-Box proposed in this paper has the minimum area and minimum power, which are 11.27% and 6.65% smaller than that of the smallest area S-Box, respectively. | LIU Yaoping WU Ning ZHANG Xiaoqiang ZHOU Fang GE Fen | 2017 | Chinese Journal of Electronics2017，26，4： | 2 |
| 9 | Graph Zn and some graphs related to Zn are determined by their spectrum显示文摘 | SHEN Xiaoling HOU Yaoping ZHANG Yuanping | 2005 | Linear Algebra and its Applications2005，404，： | 1 |
| 10 | Elimination of Rubi-sco alters the regulation of nitrogenase activity and increases hydro-gen production in Rhodospirillum rubrum显示文摘 | Wang Di Zhang Yaoping Welch Emily | 2010 | International Journalof Hydrogen Energy2010，，35： | 1 |
| 11 | Graph Zn and some graphs related to Zn are determined by their spectrum显示文摘 | SHEN XIAOLING HOU YAOPING ZHANG YUANPING | 2005 | Linear Algebra Appl2005，，404： | 1 |
| 12 | Treatment of compost leachate by the combination of coagulation and membrane process显示文摘This study describes the treatment of composting leachate by the combination of coagulation and nanofiltration process.Poly ferric sulfate(PSF) was used as coagulant,and the effect of p H value and PSF dosage on the coagulation performance was investigated.The results indicated that the chemical oxidation demand(COD)and turbidity removal efficiency could reach to 62.8% and 75.3%,respectively at an optimum dosage of1200 mg·L^(-1)at p H 6.0.During the nanofiltration process,the operation conditions such as temperature and pressure were optimized,89.7% of COD,78.2% of TOC,72.5% of TN,83.2% of TP,and 78.6% of NH3-N were retained when tested at 0.6 MPa at 25 °C.The final leachate effluent concentration of COD,BOD5,NH3-N,TOC,SS was92 mg·L^(-1),31 mg·L^(-1),21 mg·L^(-1),73 mg·L^(-1)and 23 mg·L^(-1),respectively,which reached the local discharge standard.The combination of coagulation-filtration is useful for composting leachate treatment. | Zengnian Shu Yaoping Lu Jian Huang Wenhui Zhang | 2016 | Chinese Journal of Chemical Engineering2016，24，10： | 1 |
| 13 | Hydrogen production by draTGB hupL double mutant of Rhodospirillum rubrum under different light conditions显示文摘To increase H2 yield of Rhodospirillum rubrum in two-stage hydrogen production process, two deletion mutants were constructed. One is single mutant designated R. rubrum UR801 that deleted hupL gene encoding the large subunit of uptake hy- drogenase, and the other is a double mutant desig- nated R. rubrum UR805 lacked both draTGB encod- ing regulators for the activity of nitrogenase and hupL. Comparing H2 yields of two mutants with R. rubrum UR2 (wild type) and UR472 (ΔdraTGB) under differ- ent light conditions, the results showed that the H2 yield of R. rubrum UR801 under continuous light is the highest (5700 mL of H2 per liter culture), and it is 1.56, 2.24 and 2.32-fold that of R. rubrum UR2, UR472 and UR805, respectively. However, the total H2 yield of R. rubrum UR805 in two-stage hydrogen production process is the highest (4303 mL/L), and it is 1.35, 1.21 and 1.04-fold that of R. rubrum UR2, UR801 and UR472, respectively. Thus, R. rubrum UR805 might be a valuable strain to produce a large amount of hydrogen in two-stage hydrogen produc- tion process. | ZHU Ruiyan WANG Di ZHANG Yaoping LI Jilun | 2006 | Chinese Science Bulletin2006，51，21： | 1 |
| 14 | A New Robust Multiple Description Coding Method Based on Region of Interest 显示文摘 | Song Xiao Fang Zhang Chengke Wu Yunsong Li Yaoping Yan | 2003 | IEEE AINA2003，，： | 1 |
| 15 | 35 km amplifier-less four-level pulse amplitude modulation signals enabled by a 23 GHz ultrabroadband directly modulated laser显示文摘The 4-level pulse amplitude modulation(PAM4)based on an 23 GHz ultrabroadband directly modulated laser(DML)was proposed.We have experimentally demonstrated that based on intensity modulation and direct detection(IMDD)56 Gbps per wavelength PAM4 signals transferred over 35 km standard single mode fiber(SSMF)without any optical amplification and we have achieved the bit error rate(BER)of the PAM4 transmission was under 2.9×10–4 by using feed forward equalization(FFE). | Yaoping Xiao Yu Liu Yiming Zhang Haotian Bao Ninghua Zhu | 2020 | Journal of Semiconductors2020，41，3： | 1 |
| 16 | Comparative functional genomics identifies an iron-limited bottleneck in a Saccharomyces cerevisiae strain with a cytosolic-localized isobutanol pathway显示文摘Metabolic engineering strategies have been successfully implemented to improve the production of isobutanol,a next-generation biofuel,in Saccharomyces cerevisiae.Here,we explore how two of these strategies,pathway re-localization and redox cofactor-balancing,affect the performance and physiology of isobutanol producing strains.We equipped yeast with isobutanol cassettes which had either a mitochondrial or cytosolic localized isobutanol pathway and used either a redox-imbalanced(NADPH-dependent)or redox-balanced(NADH-dependent)ketol-acid reductoisomerase enzyme.We then conducted transcriptomic,proteomic and metabolomic analyses to elucidate molecular differences between the engineered strains.Pathway localization had a large effect on isobutanol production with the strain expressing the mitochondrial-localized enzymes producing 3.8-fold more isobutanol than strains expressing the cytosolic enzymes.Cofactor-balancing did not improve isobutanol titers and instead the strain with the redox-imbalanced pathway produced 1.5-fold more isobutanol than the balanced version,albeit at low overall pathway flux.Functional genomic analyses suggested that the poor performances of the cytosolic pathway strains were in part due to a shortage in cytosolic Fe-S clusters,which are required cofactors for the dihydroxyacid dehydratase enzyme.We then demonstrated that this cofactor limitation may be partially recovered by disrupting iron homeostasis with a fra2 mutation,thereby increasing cellular iron levels.The resulting isobutanol titer of the fra2 null strain harboring a cytosolic-localized isobutanol pathway outperformed the strain with the mitochondrial-localized pathway by 1.3-fold,demonstrating that both localizations can support flux to isobutanol. | Francesca V.Gambacorta Ellen R.Wagner Tyler B.Jacobson Mary Tremaine Laura K.Muehlbauer Mick A.McGee Justin J.Baerwald Russell L.Wrobel John F.Wolters Mike Place Joshua J.Dietrich Dan Xie Jose Serate Shabda Gajbhiye Lisa Liu Maikayeng Vang-Smith Joshua J.Coon Yaoping Zhang Audrey P.Gasch Daniel Amador-Noguez Chris Todd Hittinger Trey K.Sato Brian F.Pfleger | 2022 | Synthetic and Systems Biotechnology2022，7，2： | 1 |
| 17 | Discrimination of oolong tea ( Camellia sinensis ) varieties based on feature extraction and selection from aromatic profiles analysed by HS-SPME/GC–MS显示文摘 | Jie Lin Pan Zhang Zhiqiang Pan Hairong Xu Yaoping Luo Xiaochang Wang | 2013 | Food Chemistry2013，，1： | 1 |
| 18 | Graph Znand some graphs related to Znare determined by their spectrum显示文摘 | Yaoping Hou Yuanguang Zhang | 2005 | Linear Algebra Appl2005，5868，： | 1 |
| 19 | Graph Z, and some graphs related to Zn are determined by their spectrum 显示文摘 | SHEN Xiaoling HOU Yaoping ZHANG Yuanping | 2005 | Linear Algebra Appl2005，404，： | 1 |
| 20 | Safety Design Strategy for Highway Interchange Exit Ramp显示文摘Highway is an important type of road in China’s road network,and it also carries a larger portion of transportation task.Safety is the first indicator in the stage of its use,so it is necessary to carry out safety design focusing on the highway interchange exit ramp to effectively prevent traffic accidents.Therefore,in this paper,the important significance of the safety design of the highway interchange exit ramp and the key factors affecting its safety were discussed and studied in detail,and finally corresponding strategies were proposed for discussion and communication. | Jing Zhou Yaoping Luo Heng Zhang Xuguang Zheng | 2021 | Journal of Architectural Research and Development2021，5，2： | 0 |
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