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1Petrogenesis and Geotectonic Significance of Early-Neoproterzoic Olivine-Gabbro within the Yangtze Craton: Constrains from the Mineral Composition, U-Pb Age and Hf Isotopes of Zircons显示文摘The olivine-gabbroic rocks located at the Huangling anticline within the Yangtze Craton are dated at circa 857–854 Ma by LA-ICP-MS method. The rocks belong to the sub-alkaline series and consist of pyroxene(35%–40%), plagioclase(40%–45%), olivine(8%–10%) and spinel(3%–5%). Olivine has Fo values of 73–83 that is classified as chrysolite. Pyroxene has relative low contents of Fe O(6.60 wt.%–8.23 wt.%) but high Ca O(20.23 wt.%–21.25 wt.%) contents, however, plagioclase has high Al_2O_3(31.78 wt.%–32.37 wt.%), Ca O(16.08 wt.%–16.25 wt.%) and An(79–80) values, but low Na2 O contents(1.95 wt.%–2.11 wt.%). Spinel are magnesioferrite with characteristics of high contents of Mg O(13.65 wt.%– 13.68 wt.%), Fe O(23.27 wt.%–23.40 wt.%) and Al_2O_3(62.43 wt.%–62.74 wt.%). Chemical compositions of these minerals are similar to those of gabbro rocks that were formed in the post-orogeny environment. The olivine-gabbro samples have negative zircon εHf values(-16.57±0.47) that resemble the mafic rocks in the same region, indicating that they are derived from the extremely enriched mantle source. On the compilation of documented Neoproterozoic mafic rocks in the Yangtze Craton, it is proposed that the mantle in the northern Yangtze Craton has experienced different degrees enrichment during the Neoproterozoic.Xingfu Jiang Songbai Peng Timothy M.Kusky Lu Wang Hao Deng 2018Journal of Earth Science2018,29,1:10
2Gas chromatography-mass spectrometry analysis of essential oils from five parts of Chaihu(Radix Bupleuri Chinensis)显示文摘OBJECTIVE: To analyze the essential oils from flowers, leaves, stems, roots, and fruits of Chaihu(Radix Bupleuri Chinensis).METHODS: We extracted essential oils from different parts of Chaihu(Radix Bupleuri Chinensis) using a steam distillation method. The essential oils were analyzed by gas chromatography-mass spectrometry(GC-MS). Data were collected in full scan mode(m/z 60-600). Volatile components were identified based on their retention indices and by comparing their mass spectra with those in the National Institute of Standards and Technology 2005 database assisted by tandem mass spectrometry information. The relative content of each constituent wasdetermined by area normalization.RESULTS: We identified 111 components, of which12 were common to all 5 parts, 30 were found only in roots, 14 were found only in flowers, 6 were found only in leaves, 4 were found only in stems,and 17 were found only in fruits.CONCLUSION: Our results show that the stems,flowers, leaves, and fruits of Chaihu(Radix Bupleuri Chinensis)contain a high concentration of essential oils, and that the exact composition of the essential oils differs among the plant parts. To develop new medicines and make full use of the Chaihu(Radix Bupleuri Chinensis)resource, it is important to characterize the essential oils from different parts of the plant. In future research, it will be important to determine the pharmacological effects of the various components and the essential oil mixtures.Jie Meng Xingfu Chen Wenyu Yang Jiuhua Song Yu Zhang Zhifei Li Xingwang Yang Zhanguo Yang 2014Journal of Traditional Chinese Medicine2014,34,6:9
3Comparison of basic features and origins of oolitic shoal reservoirs between carbonate platform interior and platform margin locations in the Lower Triassic Feixianguan Formation of the Sichuan Basin,southwest China显示文摘The oolitic shoal reservoirs of the Lower Triassic Feixianguan Formation carbonates in the Sichuan Basin of southwest China are an important target for gas exploration in the basin.Their occurrence,like other cases worldwide,can be divided into two locations in general,i.e.,platform interior and platform margin locations.Their differences of reservoir features and origins,however,have not been investigated comprehensively due to different exploration degrees.This issue is addressed in this paper,to provide basic data and information for the basin's hydrocarbon exploration and for the study of carbonate platform sedimentology and reservoir geology worldwide.We compared the features of these two types of reservoirs in detail,including the depositional and diagenetic features,pore types and petrophysical features.Based on the comparison,the origin of the reservoirs was further discussed.It is shown that the reservoirs in platform interior and platform margin locations differ significantly.The interior carbonates were deposited in moderate to high energy settings and the dominant lithologic type was limestone,which was weakly compacted and intensely cemented and has undergone meteoric dissolution.Pore types include intragranular dissolution and moldic pores,with low porosities(<6%) and low permeabilities(<0.1 mD).By contrast,the platform margin carbonates were deposited in relatively high energy settings and mainly consisted of dolostones with some limestones.The rocks were strongly compacted but incompletely cemented.As a result,some primary intergranular pores were preserved.Both meteoric solution and burial solution have taken place.There are various types of pore spaces including intergranular and intercrystalline solution pores and residual intergranular pores.This type of reservoir generally has better petrophysical properties(>9% porosity and >0.1 mD permeability) and pore-throat structures than the interior reservoirs.These differences were influenced by both primary depositional features and secondary diagenesis.For the interior carbonate reservoirs,early meteoric dissolution,weak compaction and strong cementation are important controlling factors.By contrast,the factors controlling the formation of the margin carbonate reservoirs mainly include dolomitization,preservation of primary pores and burial dissolution.Tan Xiucheng Zhao Luzi Luo Bing Jiang Xingfu Cao Jian Liu Hong Li Ling Wu Xingbo Nie Yong 2012Petroleum Science2012,9,4:9
4Thermal decomposition mechanism of ammonium sulfate catalyzed by ferric oxide显示文摘Xingfu SONG Jingcai ZHAO Yunzhao LI Ze SUN Jianguo YU 2013Frontiers of Chemical Science and Engineering2013,7,2:8
5Preparation and crystallization kinetics of micron-sized Mg(OH)2 in a mixed suspension mixed product removal crystallizer显示文摘镁氢氧化物是重要化学药品,并且通常经由降水过程从海水或盐水被获得。镁氢氧化物的粒子尺寸分发在随后的过滤上有大效果,弄干处理。在这份报纸,有高纯净的微米大小的镁氢氧化物,大粒子尺寸和低水,在过滤器蛋糕的内容在混合暂停经由简单湿降水被综合混合产品移动(MSMPR ) crystallizer。镁氢氧化物的性质上的反应物集中,住处时间和杂质的效果被 X 光检查衍射(XRD ) 调查,扫描电子显微镜学(SEM ) 和 Malvern 激光粒子尺寸分析器。结果证明 NaOH 集中和住处时间在水内容和 Mg 的粒子尺寸上有大效果(哦) 2。球形的 Mg (哦) 2 与比 99% 高的纯净和水内容与大约 30 m 的一致直径被获得不到 31% 。而且,结晶化动力学基于人口平衡理论被学习基于 ASL 模型为工业增大,和模拟系数( R 2 )提供理论数据,分别地, C-R 模型是 0.9962 和 0.9972 显示镁氢氧化物的水晶生长率能好由 sizedependent 生长模型模仿了。Xingfu SONG Kefeng TONG Shuying SUN Ze SUN Jianguo YU 2013Frontiers of Chemical Science and Engineering2013,7,2:7
6Chaotic invariant sets of a delayed discrete neural network of two non-identical neurons显示文摘In this paper, we show that a delayed discrete Hopfield neural network of two nonidentical neurons with no self-connections can demonstrate chaotic behavior in a region away from the origin. To this end, we first transform the model, by a novel way, into an equivalent system which enjoys some nice properties. Then, we identify a chaotic invariant set for this system and show that the system within this set is topologically conjugate to the full shift map on two symbols. This confirms chaos in the sense of Devaney. Our main result is complementary to the results in Kaslik and Balint (2008) and Huang and Zou (2005), where it was shown that chaos may occur in neighborhoods of the origin for the same system. We also present some numeric simulations to demonstrate our theoretical results.CHEN YuanLong HUANG Yu ZOU XingFu 2013Science China Mathematics2013,56,9:6
7Extraction of hydrogen chloride by a coupled reaction-solvent extraction process显示文摘A coupled 反应溶剂抽取过程被用来把 HCl 从模仿的蒸馏器浪费移开。各种各样的提炼之物和 diluents 的抽取表演被比较,在各种各样的 diluents 的 N235 (第三级的胺的混合物) 的明显的盐基度是坚定的。最好的结果作为提炼之物用 N235 和 isoamyl 酒精被获得并且稀释分别地。从联合抽取的 HCl 的收益与这个抽取系统是 75% 。为在两个的 HCl 的移动的机制直接、联合的抽取被调查。为联合抽取, R 3 NHCl 离子对建筑群涉及 HCl 移动。为直接抽取,机制在 HCl 的高集中包含了氢契约的形成。Yunzhao Li Xingfu Song Guilan Chen Shuying Sun Yanxia Xu Jianguo Yu 2015Frontiers of Chemical Science and Engineering2015,9,4:6
8Temperature dependence of pyro-phototronic effect on self-powered ZnO/perovskite heterostructured photodetectors显示文摘自我动力的 ZnO/perovskite heterostructured 紫外(紫外) 光电探测器(PD ) 最近作为的一个有希望的解决方案基于 pyro-phototronic 效果被报导了精力有效, ultrafast 反应,和高效的紫外 PD。在这研究,自我动力的 ZnO/perovskite heterostructured PD 的察觉到相片的表演上的 pyro-phototronic 效果的温度依赖被调查。到紫外光的这些 PD 的当前的回答被 174.1% 在 77 K 提高, 28.7% 在低温度在由于改进 pyro-phototronic 的 300 K 完成。pyro-phototronic 效果的基础被在紫外照明之上分析 chargetransfer 过程和 PD 的当前的反应的时间常数彻底地学习。这个工作在 ZnO/perovskite heterostructure 上关于 pyrophototronic 效果介绍深入的理解并且为 ultrafast 相片察觉到, optothermal 察觉,和 biocompatible optoelectronic 探针为相应光电子的设计和发展提供指导。Wenbo Peng Ruomeng Yu Xingfu Wang Zhaona Wang Haiyang Zou Yongning He Zhong Lin Wang 2016Nano Research2016,9,12:5
9Effect of melt superheating treatment on the cast structure of K465 nickel-based superalloy显示文摘The cast structure of a K465 nickel-based superalloy with different temperatures of melt superheating treatment was studied. It is shown that melt superheating treatment plays a significant role in the grain size and carbide morphology. With increasing melt superheating temperature (below 2023 K),the grain size increases obviously and the carbide morphology is changed from a blocky to a script-like shape. However,when the melt superheating temperature is between 2023 K and 2123 K,the grain size decreases gradually,and the morphology of the MC carbide changes back to the blocky appearance. The content of W is also influenced by melt superheating treatment.Pei, Zhongye Zhao, Minghan Tian, Yanwen Li, Juntao Chen, Xingfu Wu, Jiantao 2009Rare Metals2009,28,2:5
10Effects of operational and structural parameters on cell voltage of industrial magnesium electrolysis cells显示文摘电场是电解过程的精力基础和在一个镁电解房间的 multiphysical 地的来源。在这研究,一个三维的数字模型被开发并且过去常通过有限元素分析以稳定的状态计算电场。基于电场的模拟,运作、结构的参数例如当前的紧张,阳极厚度,阴极厚度,和阳极阴极距离(ACD ) ,被调查获得最小的房间电压。优化是获得在镁电解过程在精力消费上有重要效果的最小的电阻电压。结果显示电压上的当前的紧张的效果能被忽略, ACD 的效果是明显的。而且,在电压和阳极和阴极的厚度之间有线性减少;并且 anodecathode 工作高度也在电压上有重要效果。Ze Sun Chenglin Liu Guimin Lu Xingfu Song Jianguo Yu 2015Frontiers of Chemical Science and Engineering2015,9,4:5
11Seismic reflection evidence of crustal duplexing and lithospheric underthrusting beneath the western Qilian Mountains,northeastern margin of the Tibetan Plateau显示文摘The geological processes responsible for outward growth of the Tibetan Plateau are debated.The Qilian Mountains on the northeastern margin of the plateau comprise one of the youngest structural components of the plateau whose understanding is key to deciphering the broader geological evolution of the region.Here,based on a reprocessed deep seismic profile which was originally collected during the 1990 s across the northeast margin of the western Qilian Mountains and previous geological and geophysical data,we find evidence for decoupled crustal deformation that was partitioned by a decollement,in which lowercrustal deformation featured by local duplexing preceded upper-crustal deformation featured by imbricate thrusts.Furthermore,we propose that the Asian lithospheric mantle is being underthrust beneath the western Qilian Mountains,as inferred from patterns of lower crustal deformation which is marked by the Moho geometry.Integrating these results yields a better understanding of lithospheric deformation of western Qilian Mountains,northeastern margin of the plateau during the Cenozoic.Xingfu HUANG Rui GAO Wenhui LI Xiaosong XIONG 2021Science China Earth Sciences2021,64,1:5
12Analyse and sound image localization experiment study on multi-channel planar surround sound system显示文摘In this paper the method of approximate expansion is used to analyse a perfect planar surround sound system, resulting in an order of new and upgrade systems. First reproductinn signals of the perfect system and the characteristics of different orders systems are analysed. The independent transmission signals and decoding (reproduction) equation of the systexns are given. The compatibility among different orders systems and the problem of simplifying output channels are discussed. The problem of signal picking up, recording,transmitting and the possibility of putting the systems into practical use are studied. A sound hoage localization experiment for the systems is carried out in order to study haage localization in relaion to the numbers of transmission signals and output channels. The experimental result is consistemt with the theoretical result. This work lay down a base for practical use.XIE Bosun and XIE Xingfu (Applied Physics Dept. South china Universityof Technology,Guangzhou 510641) 1996Chinese Journal of Acoustics1996,15,1:5
13深地震反射剖面揭露青藏高原陆-陆碰撞与地壳生长的深部过程显示文摘印度板块与亚洲板块的碰撞使喜马拉雅-青藏高原隆升,地壳增厚和生长扩展。探测青藏高原深部结构,揭露两个大陆如何碰撞,碰撞如何使大陆变形的过程,是全球关切的科学奥秘。深地震反射剖面探测是打开这个科学奥秘的最有效途径之一。20多年来,运用这项高技术探测到青藏高原巨厚地壳的精细结构,攻克了难以得到下地壳和Moho清晰结构的技术瓶颈,揭露了陆陆碰撞过程。本文在探测研究成果基础上,从青藏高原南北东西对比,再到高原腹地,系统地综述了青藏高原之下印度板块与亚洲板块碰撞俯冲的深部行为。印度地壳在高原南缘俯冲在喜马拉雅造山带之下,亚洲板块的阿拉善地块岩石圈在北缘向祁连山下俯冲,祁连山地壳向外扩展,塔里木地块与高原西缘的西昆仑发生面对面的碰撞,在高原东缘发现龙日坝断裂而不是龙门山断裂是扬子板块的西缘边界,高原腹地Moho薄而平坦,岩石圈伸展垮塌。多条深反射剖面揭露了在雅鲁藏布江缝合带下印度板块与亚洲板块碰撞的行为,印度地壳不仅沿雅鲁藏布江缝合带存在由西向东的俯冲角度变化,而且其向北行进到拉萨地体内部的位置也不同。在缝合带中部,显示印度地壳上地壳与下地壳拆离,上地壳向北仰冲,下地壳向北俯冲,并在俯冲过程发生物质的回返与构造叠置,使印度地壳减薄,喜马拉雅地壳加厚。俯冲印度地壳前缘与亚洲地壳碰撞后沉入地幔,处于亚洲板块前缘的冈底斯岩基与特提斯喜马拉雅近于直立碰撞,冈底斯下地壳呈部分熔融状态,近乎透明的弱反射和局部出现的亮点反射,以及近于平的Moho都反映出亚洲板块南缘的伸展构造环境。GAO Rui ZHOU Hui GUO Xiaoyu LU Zhanwu LI Wenhui WANG Haiyan LI Hongqiang XIONG Xiaosong HUANG Xingfu XU Xiao 2021地学前缘2021,28,5:4
14Synthesis and characterization of magnesium hydroxide by batch reaction crystallization显示文摘Magnesium hydroxide with high purity and uniform particle size distribution was synthesized by the direct precipitation method using MgCl_(2) and NaOH as reactive materials and NaCl as additive to improve the crystallization behavior of the product.The particle size distribution,crystal phase,morphology,and surface area of magnesium hydroxide were characterized by Malvern laser particle size analyzer,X-ray diffraction(XRD),scanning electron microscope(SEM)and Branauer-Emmett-Teller(BET)method,respectively.The purity of products was analyzed by the chemical method.The effects of synthesis conditions on the particle size distribution and water content(filtration cake)of magnesium hydroxide were investigated.The results indicated that feeding mode and rate,and reaction temperature had important effects on water content and the particle size distribution of the product,and sodium chloride improved the crystallization behavior of magnesium hydroxide.The ball-like magne-sium hydroxides with the particle size distribution of 6.0–30.0μm and purity higher than 99.0%were obtained.This simple and mild synthesis method was promising to be scaled up for the industrial production of magnesium hydroxide.Xingfu SONG Shuying SUN Dengke ZHANG Jin WANG Jianguo YU 2011Frontiers of Chemical Science and Engineering2011,5,4:4
15Wavefield continuation datuming using a near surface model显示文摘当地形学和低速度地区差别极大地变化时,常规垂直静态的时间移动将为在复杂近的表面上获得的地震数据引起波浪地失真和影响波浪方程地震成像。在这篇论文,我们建议一条途径到把联合断层摄影术倒置与波浪地继续相结合在崎岖获得地形学上为地震数据解决静态的问题的资料修正。首先,近的表面模型被测定波浪断层摄影术倒置获得。第二,来源和接收装置的波浪地向下并且向上被继续完成从扁平的表面开始并且在地形学上面定位资料的资料修正。基于相互的定理, Huygen 的并且夫累X尔原则,来源和接收装置的地点,并且关于是的表面上的记录数据,第二等的排出物,来源和接收装置分别地对在地形学上面的资料向上继续。因此,与复杂近的表面的条件使用联合断层摄影术倒置和波浪地继续的资料修正被完成。Cui Xingfu Li Hongbing Hu Ying Liang Hong Qi Li 2007Applied Geophysics2007,4,2:3
16A Provable Encrypted Ring Signature from Bilinear Pairings显示文摘MIAO Fuyou XIONG Yan YANG Shoubao WANG Xingfu 2006Chinese Journal of Electronics2006,15,2:3
17Ontology modeling of semantics in social media:Public issue knowledge base (PIKB)of the Weibo显示文摘Purpose:This study aims to construct an ontology to model the semantics of social media streams,in particular,trending topics and public issues.Design/methodology/approach:Our knowledge base included 10 public events and topics from Weibo respectively,which were collected through keyword search and a crawler program.We used a semi-automatic approach to model and annotate the semantics in social media,and adapted the multi-layered ontology to refine the design based on previous researches,then we used named entity recognition(NER) to extract entities to instantiate the ontology.Relationships were extracted based on co-occurrence measures.Finally,we manually conducted post-filtering evaluation and edited the extracted entities and relationships.Findings:An initial assessment demonstrated that our multi-layered ontology supports various types of queries and analyses in the public issue knowledge base(PIKB),which can serve as an effective tool to query,understand and trace public issues.Research limitations:Manual involvement cannot meet the requirements for challenges of sustainable developments.Since the relationships extracted are fully based on the co-occurrence of entities,rich semantic relationships,such as how much the key players have been involved,could not be fully reflected.Besides,the user evaluation is necessary for further ontology assessment.Practical implications:The PIKB can be used by regular Web users and policy makers to query,understand,and make sense of public events and topics.The methodology and reusable ontology model are useful for institutions that are interested in making use of the social media data.Originality/value:In this study,a multi-layered ontology is applied to model the evolving semantics of public events and trending topics in social media,and the semi-automatic approach could make it possible to extract entities and relationships from large amount of unstructured short texts of user generated content(UGC) from social media.Yan ZHOU Wei LI Xingfu YUAN Pengyi ZHANG 2014Chinese Journal of Library and Information Science2014,,1:2
18Study of Calculation of Reserves and Scale for Low–grade Solid Potassium Deposits of Chaerhan Salt Lake显示文摘Analyzes on solid potassium mineral reserves calculation methods and existing problems of chaerhan salt lake,t with many parameters comparison solid potassium mineral reserves calculation results are reliable。WANG Xingfu WANG Shijun 2014Acta Geologica Sinica(English Edition)2014,88,S1:2
19Carbon dioxide reforming of methane over mesoporous nickel aluminate/γ-alumina composites显示文摘A series of x NiAl_2O_4/γ-Al_2O_3 composites with various Ni contents have been prepared via one-step partial hydrolysis of metal nitrate salts in the absence of surfactants and used for carbon dioxide reforming of methane. The characterization results demonstrated that the Ni Al_2O_4/γ-Al_2O_3 materials possessed mesoporous structures of uniform pore sizes; and the Ni^(2+) ions were completely reacted with alumina to Ni Al_2O_4 spinel in the matrices using N2 sorption, XRD, TEM, and XPS. The Ni Al_2O_4/γ-Al_2O_3 materials exhibited excellent catalytic properties and superior long-term stability for carbon dioxide reforming of methane. The effects of Ni content on the intrinsic activities and the amounts of coke disposition of the x NiAl_2O_4/γ-Al_2O_3 catalysts were discussed in detail for the carbon dioxide reforming of methane. The results revealed that the Ni particle sizes did not affect the intrinsic activity of metallic Ni, but smaller Ni particles could reduce the rate of coke deposition.Li Zhang Xueguang Wang Xingfu Shang Mingwu Tan Weizhong Ding Xionggang Lu 2017Journal of Energy Chemistry2017,26,1:2
20Influence of Pre-Compressive Creep on Internal Friction Stress and Creep Parameters of Nickel-Base Single Crystal Superalloys显示文摘By means of pre-compressive creep treatment, the cubic γ′ phase in a nickel base single crystal superalloy is transformed into the P-type rafted structure. And the influence of the pre-compressive creep on the internal friction stress and creep lifetimes of the superalloy are investigated by means of the measurement of the creep curves and microstructure observation. Results show that, compared to the P-type structure alloy, the full heat treated state alloy displays a bigger internal friction stress value of dislocation motion during steady state creep and a longer creep lifetimes. The creep activation energies of the full heat treated and P-type structures alloys are measured to be 462 kJ/mol and 412 kJ/mol, respectively. Thereinto, the P-type rafted γ′ phase in the alloy is transformed into the N-type structure during tensile creep. And the N-type γ′ phase transformed from the P-type structure displays a shorter size in length, this is a main reason of the P-type structure alloy possessing a shorter creep lifetimes due to creep dislocation moving easily over the rafted γ′ phase.Yu Xingfu Tian Sugui Zhao Zhonggang Du Hongqiang Shang Lijuan Cui Shusen 2009稀有金属材料与工程2009,38,A03:2
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