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Search Results: 1 - 10 of 27668 matches for " HU Aiqin "
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Decision Support Technology Research of Emergency Disposal  [PDF]
Qing Wang, Yuanchun Huang, Yuelei He, Zhigang Liu, Hua Hu, Aiqin Sun
American Journal of Industrial and Business Management (AJIBM) , 2013, DOI: 10.4236/ajibm.2013.38084
Abstract:

This paper focuses on the problem about how to efficiently process the emergency of rail transit and guarantee the lowest accident loss in a short period of time, which is the urban rail transit management policy that makers are faced with, and which develops a high integrated system with strong information based on contingency plans to give the decision aid of urban rail transit emergency events. The paper uses formal methods to present the emergency plan, generate the emergency disposal plan, meet the requirements of on-site emergency disposal, and it realizes the modernization of urban rail transit emergency management which has an important significance. Finally, taking a subway fire as an example, it describes the practicality of the auxiliary decision system.

Zircon U-Pb age of granitic gneiss on Duku highway in western Tianshan of China and its geological implications
Yibing Chen,Aiqin Hu,Guoxin Zhang,Qianfeng Zhang
Chinese Science Bulletin , 2000, DOI: 10.1007/BF02886044
Abstract: Granitic gneiss on Duku highway in western Tianshan has been dated by the U-Pb zircon method. When plotted on the concordia diagram, the results give linear data array and the upper intercept age of (882 ± 33)Ma, and the age was considered as the crystallization age of the protolith. Granitic gneiss has high ASI value (1.09), high LILE and LREE contents, significantly negative Eu depletion, distinctly negative Ba, Sr, P, Ti and Nb anomalies and indicate continental crust parentage, which is consistent with high initial87Sr/86Sr ratios value (0.7170) and very negative εNd(t)=-14.1. The protolith magma is interpreted as a product of partial melting of the basement rocks of older basement crust.
Zircon U-Pb age of granitic gneiss on Duku highway in western Tianshan of China and its geological implications

CHEN Yibing,HU Aiqin,ZHANG Guoxin,ZHANG Qianfeng,

科学通报(英文版) , 2000,
Abstract: Granitic gneiss on Duku highway in western Tianshan has been dated by the U-Pb zircon method. When plotted on the concordia diagram, the results give linear data array and the upper intercept age of (882 ± 33)Ma, and the age was considered as the crystallization age of the protolith. Granitic gneiss has high ASI value (1.09), high LILE and LREE contents, significantly negative Eu depletion, distinctly negative Ba, Sr, P, Ti and Nb anomalies and indicate continental crust parentage, which is consistent with high initial87Sr/86Sr ratios value (0.7170) and very negative εNd(t)=-14.1. The protolith magma is interpreted as a product of partial melting of the basement rocks of older basement crust.
ISPO: A New Way to Solve Traveling Salesman Problem  [PDF]
Xiaohua Wang, Aiqin Mu, Shisong Zhu
Intelligent Control and Automation (ICA) , 2013, DOI: 10.4236/ica.2013.42017
Abstract: This paper first introduces the concepts of mobile operators and mobile sequence, with which it redefines the rate of particle swarm optimization algorithm and the formula of position updating. Combining this discrete PSO algorithm with neighbors, the paper puts forward Hybrd Particle Swarm Optimization Algorithm, whose effectiveness is verified at the end of this paper.
SHRIMP zircon U-Pb dating and its significance for gneisses from the southwest area to Qinghe County in the Altai,China.
阿尔泰地区青河县西南片麻岩中锆石SHRIMP U-Pb定年及其地质意义

HU AiQin,WEI GangJian,DENG WenFeng,CHEN LinLi,
胡霭琴
,韦刚健,邓文峰,陈林丽

岩石学报 , 2006,
Abstract: 有关阿尔泰造山带中变质岩形成时代问题,目前仍有争议。特别是中国-哈萨克斯坦联合地质科学考察队将其绝大部份均划为古元古-中元古代变质岩系后,更引起诸多地质学家的关注。本文研究的青河片麻岩出露在青河县西南地区,在构造上处于额尔齐斯剪切带。青河片麻岩的元素地球化学和Nd-Sr同位素组成特征表明其原岩形成于岛弧构造环境。应用精确的SHRIMP锆石U-Pb定年,获得该变质岩系中英安质片麻岩中锆石的年龄为281±3(2σ)Ma,代表其片麻岩的形成年龄。研究中未发现有任何前寒武纪古老锆石或相关的年龄信息,因此研究结果不支持该区变质岩为“前寒武纪”的观点。结合片麻岩中锆石阴极发光图像特征,说明该地区的变质作用和岩浆作用的时间范围在293±6Ma~271±5Ma期间。因此,该项研究结果确定了阿尔泰造山带发生在二叠纪早期一次重要地质热事件的可靠时限。额尔齐斯构造剪切带中青河片麻宕的锆石U-Pb年龄,以及各种变质岩中角闪石和黑云母的~(40)Ar/~(39)Ar年龄,记录了阿尔泰造山带晚古生代时期一次重要的构造、变质作用、快速隆升的动力学过程,为研究晚古生代古亚洲洋的闭合或大陆的回返时限提供了初步的证据。
Precambrian basement age and characteristics of Southwestern Tianshan: Zircon U-Pb geochronology and Nd-Sr isotopic compositions
西南天山前寒武纪基底时代和特征:锆石U—Pb年龄和Nd—Sr同位素组成

Chen Yibing,Hu Aiqin,Zhang Guoxin,Zhang Qianfeng,
陈义兵
,胡霭琴,张国新,张前锋

岩石学报 , 2000,
Abstract: 采用锆石U-Pb定年方法,精确测定了西南天山木扎尔特群花岗片麻岩的结晶锆石年龄为(707±13)Ma(MSWD=0.33)。元素地球化学特征和低的ε
Bone Mineral Density of the Spine in 11,898 Chinese Infants and Young Children: A Cross-Sectional Study
Haiqing Xu, Zhiwei Zhao, Hong Wang, Ming Ding, Aiqin Zhou, Xiaoyan Wang, Ping Zhang, Christopher Duggan, Frank B. Hu
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0082098
Abstract: Background Bone mineral density (BMD) increases progressively during childhood and adolescence and is affected by various genetic and environmental factors. The aim of this study was to establish reference values for lumbar BMD in healthy Chinese infants and young children and investigate its influencing factors. Methods and Findings Healthy children aged 0 to 3 years who underwent regular physical examinations at the Child Health Care Clinic of Hubei Maternal and Child Health Hospital (N = 11,898) were recruited for this study. We also chose 379 preterm infants aged 0 to 1 years to preliminarily explore the development of BMD in this special population. BMD (g/cm2) measurements of the lumbar spine (L2–L4) were carried out with dual-energy X-ray absorptiometry and a questionnaire was administered to full-term children's parents to gather information on various nutritional and lifestyle factors as well as mothers' nutritional supplement use during pregnancy. Lumbar BMD significantly increased with age among both boys and girls (p<0.05), with fastest growth observed during the first postnatal year. There was no significant difference in lumbar BMD between boys and girls of similar age (p>0.05), either among healthy reference children or preterm infants. However, BMD values in preterm infants were significantly lower than those in term infants 3 to 8 months old (p<0.05) after adjustment for gestational age. Multivariable linear regression analysis indicated significant positive associations between lumbar BMD of healthy children and the child's age and current weight, mother's weight gain during pregnancy, birth weight, children's outdoor activity duration and children's physical activity duration. Conclusion Our study provides reference values of lumbar BMD for healthy Chinese children aged 0 to 3 years and identifies several influencing factors.
Parametric Set-Valued Vector Quasi-Equilibrium Problems
Liya Fan,Aiqin Li
Advances in Decision Sciences , 2010, DOI: 10.1155/2010/250378
Abstract: Two kinds of parametric set-valued vector quasi-equilibrium problems are introduced. The existence of solutions to these problems is studied. The upper and lower semicontinuities of their solution maps with respect to the parameters are investigated.
SHRIMP U-Pb age for zircons of East Tianhu granitic gneissand tectoic evolution significance from the eastern Tianshan Mountainst
天山东段天湖东片麻状花岗岩的锆石SHRIMP U-Pb年龄和构造演化意义

HU AiQin,WEI GangJian,ZHANG JiBin,DENG WenFeng,CHEN LinLi,
胡霭琴
,韦刚健,张积斌,邓文峰,陈林丽

岩石学报 , 2007,
Abstract: 东天山天湖至星星峡地区广泛分布着片麻状花岗岩,顾连兴等(1990)和张遵忠等(2004)基于 Rb—Sr 等时线年龄为707.7±4.9Ma 的结果,提出天湖东岩体最有可能形成于澄江运动造山晚期的挤压一拉张构造转折环境。因此,天湖东岩体的形成时代直接关系到对东天山造山带构造演化历史的认识。我们的研究认为该岩体的地质产状和岩石特征均有别于东天山的元古宙巨眼球片麻状花岗岩,故对天湖东二长花岗岩中的锆石作了 SHRIMP U-Pb 年龄分析。研究中测定的18粒锆石中没有发现任何元古宙残留锆石和相关的年龄信息,由17个测点的~(206)Pb/~(238)U 加权平均年龄为466.5±9.8(2σ)Ma,可以确定天湖东岩体为早古生代花岗岩,而不是元古宙(或澄江期)花岗岩。基于元素和 Nd-Sr 同位素组成的研究结果,它们具有岛弧钙碱性岩浆岩的地球化学特征。该研究结果与东、西天山造山带其它地区获得的大量早古生代花岗岩的年龄具一致性。本研究结果对揭示早古生代古亚洲洋部分洋盆的闭合时间提供了重要的依据。
SHRIMP U-Pb age for zircons of East Tianhu granitic gneissand tectoic evolution significance from the eastern Tianshan Mountainst
天山东段天湖东片麻状花岗岩的锆石SHRIMP U-Pb年龄和构造演化意义

HU AiQin,WEI GangJian,ZHANG JiBin,DENG WenFeng,CHEN LinLi,
胡霭琴
,韦刚健,张积斌,邓文峰,陈林丽

中国科技期刊研究 , 2007,
Abstract: 东天山天湖至星星峡地区广泛分布着片麻状花岗岩,顾连兴等(1990)和张遵忠等(2004)基于Rb-Sr等时线年龄为707.7±4.9Ma的结果,提出天湖东岩体最有可能形成于澄江运动造山晚期的挤压一拉张构造转折环境。因此,天湖东岩体的形成时代直接关系到时东天山造山带构造演化历史的认识。我们的研究认为该岩体的地质产状和岩石特征均有别于东天山的元古宙巨眼球片麻状花岗岩,故对天湖东二长花岗岩中的锆石作了SHRIMP U-Pb年龄分析。研究中测定的18粒锆石中没有发现任何元古宙残留锆石和相关的年龄信息,由17个测点的^206Pb/^238U加权平均年龄为466.5±9.8(2υ)Ma,可以确定天湖东岩体为早古生代花岗岩,而不是元古宙(或澄江期)花岗岩。基于元素和Nd-sr同位素组成的研究结果,它们具有岛弧钙碱性岩浆岩的地球化学特征。该研究结果与东、西天山造山带其它地区获得的大量早古生代花岗岩的年龄具一致性。本研究结果对揭示早古生代古亚洲洋部分洋盆的闭合时间提供了重要的依据。
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