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| 1 | Integrated(de)multiplexer for orbital angular momentum fiber communication显示文摘The quickly increasing data transfer load requires an urgent revolution in current optical communication. Orbital angular momentum(OAM) multiplexing is a potential candidate with its ability to considerably enhance the capacity of communication. However, the lack of a compact, efficient, and integrated OAM(de)multiplexer prevents it from being widely applied. By attaching vortex gratings onto the facets of a few-mode fiber, we demonstrate an integrated fiber-based OAM(de)multiplexer. A vortex grating fabricated on the fiber facet enables the direct multiplexing of OAM states at one port and the demultiplexing of OAM states at the other port. The measured bit error rate of the carrier signal after propagating through a 5-km few-mode fiber confirms the validity and effectiveness of the proposed approach. The scheme offers advantages in future high-capacity OAM communication based on optical fiber. | ZHENWEI XIE SHECHENG GAO TING LEI SHENGFEI FENG YAN ZHANG FAN LI JIANBO ZHANG ZHAOHUI LI XIAOCONG YUAN | 2018 | Photonics Research2018，6，7： | 13 |
| 2 | Natural gas geochemistry and its origins in Kuqa depression显示文摘According to gas compositional and carbon isotopic measurement of 114 gas samples from the Kuqa depression,accumulation of the natural gases in the depression is dominated by hydrocarbon gases, with high gas dryness(C1/C1-4)at the middle and northern parts of the depression and low one towards east and west sides and southern part.The carbon isotopes of methane and its homologues are relatively enriched in 13 C,and the distributive range ofδ13C 1 ,δ13C 2 andδ13C 3 is-32‰―-36‰,-22‰―-24‰and-20‰―-22‰,respectively.In general,the carbon isotopes of gaseous alkanes become less negative with the increase of carbon numbers.Theδ13C CO2 value is less than-10‰in the Kuqa depression,indicating its organogenic origin.The distributive range of 3 He/ 4 He ratio is within n×10-8 and a decrease in 3 He/ 4 He ratio from north to south in the depression is observed.Based on the geochemical parameters of natural gas above,natural gas in the Kuqa depression is of characteristics of coal-type gas origin.The possible reasons for the partial reversal of stable carbon isotopes of gaseous alkanes involve the mixing of gases from one common source rock with different thermal maturity or from two separated source rock intervals of similar kerogen type,multistages accumulation of natural gas under high-temperature and over-pressure conditions,and sufficiency and diffusion of natural gas. | LIU QuanYou 1 ,QIN ShengFei 1 ,LI Jian 2 ,LIU WenHui 3 ,ZHANG DianWei 3 ,ZHOU QingHua 1 &HU AnPing 1 1 Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,China 2 Langfang Branch of Research Institute of Petroleum Exploration and Development,PetroChina,Langfang 065007,China 3 Exploration and Production Research Institute,SINOPEC,Beijing 100083,China | 2008 | Science China Earth Sciences2008，51，S1： | 9 |
| 3 | Accumulation process and model for the Ordovician buried hill reservoir in the western Lunnan area,the Tarim Basin显示文摘The Ordovician buried hill reservoir in the western Lunnan area, a type of dissolved fracture and cavernous reservoir, is mainly composed of heavy oil. The oil is the mixture sourcing from the Middle-Lower Cambrian and Middle-Lower Ordovician, with three stages of pool forming process: (1) the destruction and parallel migration/accumulation during the late Caledonian to early Hercynian; (2) the oil and gas accumulation during the late Hercynian characterized by adjustment upward along faults and parallel migration/accumulation; (3) the formation of heavy oil during the latest Hercynian. The Ordovician buried hill reservoir is affected by the diffusion of light oil and gas but had no hydrocarbon charging during the late Yanshan period to Himalayan period, but in this period, formed the association of heavy oil and dissolved gas cracked from crude oil with dry coefficient of 0.91-0.96. The study on accumulation process of the Ordovician buried hill reservoir has important implications for the exploration potential of early oil and gas accumulation in the cratonic area of the Tarim Basin. | ZHAO MengJun PAN WenQing HAN JianFa LIU ShaoBo QIN ShengFei ZHANG BaoMin | 2007 | Chinese Science Bulletin2007，52，A01： | 6 |
| 4 | Enhancement of Bio-based para-Xylene Selectivity in Catalytic Fast Pyrolysis of Cellulose Using a Surface-modified Mg/P/HZSM-5 Catalyst显示文摘With the growing consumption of oil, the production of /?-xylene(PX) from renewable biomass has gained significant attention recently. This work demonstrated that cellulose, a main component in lignocellulosic biomass, was directly converted into PX over the Mg/P surface-modified zeolites. The catalysts modified by the incorporation of P2O5 and MgO into HZSM-5(HZ) promoted the isomerization of zw-/o-xylenes to p-xylene. The PX selectivity was greatly enhanced using the modified zeolites due to the deactivation of external surface and the adjustment of pore entrance. In addition, the addition of methanol to cellulose was beneficial to increase the selectivity of xylenes due to the alkylation reactions and the Diels-Alder reactions between cellulose-derived furans and methanol-derived olefins. The highest PX yield of 10.7%(molar fraction) with a high PX selectivity in xylenes(97.1%) was obtained over the 10%Mg/5%P/HZ catalyst. The reaction pathway for the formation ofp-xylene was addressed according to the study of the key reactions and the characterization of catalysts. | WANG Yulan FAN Minghui ZHU Lijuan WANG Shengfei HE Yuting LI Quanxin | 2019 | Chemical Research in Chinese Universities2019，35，3： | 4 |
| 5 | Design of double-layer anti-sputtering targets for plume effects experimental system显示文摘在一个真空房间使用的一个电的推进器的劈啪作响背的效果在推进器,真空房间和试验性的设备上有不利效果。一个劈啪作响反的目标(著名计算机生产厂商) 能由减少劈啪作响背的免职效果扩大真空房间的操作生活。在国际设备使用的真空房间成功地合并了著名计算机生产厂商。改进著名计算机生产厂商表演,一个双层结构著名计算机生产厂商基于羽毛效果,试验性的系统(足) 被设计。结构 AST 主要结束当第二等的结束作为一个快门被设计解决象服务生活,劈啪作响的材料的背流动率,经济和系统安全那样的因素时,作为一座公寓被设计。验证双层著名计算机生产厂商的效果, AST 有或没有的劈啪作响的效果第二等结束被一个 DSMC 照片算法评估。另外,赤裸的房间的试验性的确认和目标被执行。结果显示第二等的结束石墨表能减少背流动收益约 50% 。双层著名计算机生产厂商的设计能为一个劈啪作响反的目标的设计作为一本参考书被介绍。 | SHANG ShengFei CAI GuoBiao ZHU DingQiang HE BiJiao | 2016 | Science China(Technological Sciences)2016，59，8： | 4 |
| 6 | Pool-Forming Stages and Enrichment Models of Medium- to High-Rank Coalbed Methane显示文摘coalbed 甲烷的形成水池的机制有它的自己的特征。在这份报纸,基于在中国的典型的忍受煤的盆上的研究,这被指出媒介的水库形成 -- 到高等级的 coalbed,甲烷经历了三个批评阶段:coalbed 甲烷产生和吸附阶段和保藏舞台。地区性的构造进化,水动力学条件和封上的条件在 coalbed 甲烷解吸附作用散开和保藏的阶段起重要作用。中等 -- 到高等级的 coalbed,甲烷有丰富模型的三种类型,也就是说最有利,相对有利,并且相反的丰富模型。 | SONG Yan ZHAO Mengjun HONG Feng LIU Shaobo QIN Shengfei WANG Hongyan | 2010 | Acta Geologica Sinica(English Edition)2010，84，6： | 4 |
| 7 | Kinetic Model of Gaseous Alkanes Formed from Coal in a Confined System and Its Application to Gas Filling History in Kuqa Depression,Tarim Basin,Northwest China显示文摘在规划温度,和化学药品和碳下面为侏罗记低成熟的煤基于热分解产品从 Kuqa 消沉的天然气的同位素的作文,天然气的基因起源被决定,然后一个煤气的充满模型被建立,在有 Kuqa 消沉的地质的背景的联合。在在不同加热下面的热分解气体产品的数据评价以后, CH4, C2H6 和 C3H8 的活跃精力被得到(2 ? ?????????? ???????????? ????? 猠牴 ' 壮霊 `?瑳慲楴牧灡楨 吗?? | LIU Quanyou ZHANG Tongwei JIN Zhijun QIN Shengfei TANG Yongchun LIU Wenhui | 2011 | Acta Geologica Sinica(English Edition)2011，85，4： | 3 |
| 8 | The mechanism of the flowing ground water impacting on coalbed gas content显示文摘The hydrogeological condition affects the coal-bed gas storage dramatically. In an area of stronger hydrodynamics, the coal has a lower gas content, while a higher gas content exists in an area of weaker hydrodynamics. Obviously, the flowing groundwater is harmful to coalbed gas preservation. But few researches focus on the mechanism of how the flowing water diminishes the coalbed gas content Based on the phenomenon that the flowing groundwater not only makes coalbed gas content lower, but also fractionates the carbon isotope, this research puts forward an idea that it is the water solution that diminishes the coalbed gas content, rather than the water-driven action or the gas dissipation through cap rocks. Only water-soluble action can both fractionate the carbon isotope and lessen the coalbed gas content, and it is an efficient way to take gas away and affect the gas content. | QIN Shengfei SONG Yan TANG Xiuyi FU Guoyou | 2005 | Chinese Science Bulletin2005，50，S1： | 3 |
| 9 | Design and Implementation of File Access and Control System Based on Dynamic Web显示文摘A dynamic Web application, which can help the departments of enterprise to collaborate with each other conveniently, is proposed. Several popular design solutions are introduced at first. Then, dynamic Web system is chosen for developing the file access and control system. Finally, the paper gives the detailed process of the design and implementation of the system, which includes some key problems such as solutions of document management and system security. Additionally, the limitations of the system as well as the suggestions of further improvement are also explained. | GAO Fuxiang YAO Lan BAO Shengfei YU Ge | 2006 | Wuhan University Journal of Natural Sciences2006，11，5： | 3 |
| 10 | The Dimension Vectors of Indecomposable Modules of Cluster-tilted Algebras and the Fomin-Zelevinsky Denominators Conjecture显示文摘The main result of this paper is that any two non-isomorphic indecomposable modules of a cluster-tilted algebra of finite representation type have different dimension vectors. As an application to cluster algebras of Types A, D, E, we give a proof of the Fomin-Zelevinsky denominators conjecture for cluster variables, namely, different cluster variables have different denominators with respect to any given cluster. | Shengfei GENG Liangang PENG | 2012 | Acta Mathematica Sinica,English Series2012，28，3： | 3 |
| 11 | Abnormal overpressure distribution and natural gas accumulation in foreland basins, Western China显示文摘Abnormal overpressure occurs in the forelandbasins of Kuqa, South Junggar and West Sichuan in China.The pressure coefficients are high. Overpressure exists inwide areas and various strata. The layers of overpressurehave a very close relationship with lithology, and the area ofoverpressure is controlled by the piedmont depression. Themechanisms of overpressure formation in the Kuqa andSouth Junggar Depression include disequilibrium compac-tion and tectonic compression; the importance of these twofactors varies in different basins and in different stages of thesame basin. Different models of gas accumulation are estab-lished to explain the relationship between overpressure dis-tribution and gas pool formation, and the influence of over-pressure on the gas pools. These models include: (i) theviolent tectonic movement leads to the pool formation inoverpressure belt (Kela-2 gas field in Kuqa); (ii) the pres-sure releases at shallow part and the gas pool forms in latetime (Hutubi gas field in southern Junggar Basin); (iii)through the pressure transfer the gas migrates and accumu-lates (Xinchang gas field in Western Sichuan Basin). | SONG Yan XIA Xinyu HONG Feng QIN Shengfei FU Guoyou | 2002 | Chinese Science Bulletin2002，47，S1： | 3 |
| 12 | The key stage and moment of coalbed gas reservior evolution in the Qinshui Basin,China显示文摘The evolution of coalbed gas reservoir is characterized by coalbed gas geochemistry and gas content. On the basis of burial history and thermal history, the forming process of coalbed gas reservoir and the gas accumulative history in the Qinshui Basin are discussed in this paper. The difference of the thermal history, geochemistry characteristic, and gas accumulative history between Yangcheng and Huozhou areas shows that the formation of coalbed gas reservoir in the Qinshui Basin is controlled by the geological process in the critical stage and the critical moment. The components and isotopes of coalbed methane are determined by the stage at which the coal maturation reaches its maximum rank. The coalbed methane accumulative history is related to the temperature and pressure of the coal burial history, because the coalbed gas is mainly in adsorptive state. It is stated that the gas content in the coal seam is controlled by the moment when the coal seam is uplifted to the shallowest position. | ZHAO Mengjun SONG Yan SU Xianbo LIU Shaobo QIN Shengfei HONG Feng LIN Xiaoying | 2005 | Chinese Science Bulletin2005，50，S1： | 2 |
| 13 | Flexible carbon nanotube-enriched silver electrode films with high electrical conductivity and reliability prepared by facile screen printing显示文摘Flexible electrode films play critical and fundamental roles in the successful development of flexible electronic devices. In this study, carbon nanotubes(CNTs) were implanted into silver(Ag) ink to enhance the electrical conductivity and the reliability of the printed Ag electrode films. The fabricated carbon nanotubes-enriched silver(Ag-CNTs) electrode films were printed on the polyimide substrates by a facile screen printing method and sintered at a relatively low temperature. The resistivity of Ag-CNTs films was decreased by 62.27% compared with the pure Ag film. Additionally, the Ag-CNTs films exhibited excellent flexibility under a bending radius of 4 mm(strain ε = 2.09%) over 1000 cycles. Furthermore, the Ag-CNTs film displayed unchangeable electrical conductivity together with a strong adhesion after an accelerated aging test with 500 thermal shock cycles. These improvements were attributed to the AgCNTs interconnected network structure, which can provide electronic transmission channels and prevent cracks from initiating and propagating. | Dan Hu Wei Zhu Yuncheng Peng Shengfei Shen Yuan Deng | 2017 | Journal of Materials Science & Technology2017，33，10： | 2 |
| 14 | Design and validation of the THMC China-Mock-Up test on buffer material for HLW disposal显示文摘According to the preliminary concept of the high-level radioactive waste(HLW) repository in China,a large-scale mock-up facility,named China-Mock-Up was constructed in the laboratory of Beijing Research Institute of Uranium Geology(BRIUG).A heater,which simulates a container of radioactive waste,is placed inside the compacted Gaomiaozi(CMZ)-Na-bentonite blocks and pellets.Water inflow through the barrier from its outer surface is used to simulate the intake of groundwater.The numbers of water injection pipes,injection pressure and the insulation layer were determined based on the numerical modeling simulations.The current experimental data of the facility are herein analyzed.The experiment is intended to evaluate the thermo-hydro-mechano-chemical(THMC) processes occurring in the compacted bentonite-buffer during the early stage of HLW disposal and to provide a reliable database for numerical modeling and further investigation of engineered barrier system(EBS),and the design of HLW repository. | Yuemiao Liu Like Ma Dan Ke Shengfei Cao Jingli Xie Xingguang Zhao Liang Chena Panpan Zhang | 2014 | Journal of Rock Mechanics and Geotechnical Engineering2014，6，2： | 2 |
| 15 | Fluid evolution and hydrocarbon accumulation model of ultra-deep gas reservoirs in Permian Qixia Formation of northwest Sichuan Basin,SW China显示文摘The fluid evolution and reservoir formation model of the ultra-deep gas reservoirs in the Permian Qixia Formation of the northwestern Sichuan Basin are investigated by using thin section,cathodoluminescence,inclusion temperature and U-Pb isotopic dating,combined with gas source identification plates and reservoir formation evolution profiles established based on burial history,thermal history,reservoir formation history and diagenetic evolution sequence.The fluid evolution of the marine ultra-deep gas reservoirs in the Qixia Formation has undergone two stages of dolomitization and one phase of hydrothermal action,two stages of oil and gas charging and two stages of associated burial dissolution.The diagenetic fluids include ancient seawater,atmospheric freshwater,deep hydrothermal fluid and hydrocarbon fluids.The two stages of hydrocarbon charging happened in the Late Triassic and Late Jurassic–Early Cretaceous respectively,and the Middle to Late Cretaceous is the period when the crude oil cracked massively into gas.The gas reservoirs in deep marine Permian strata of northwest Sichuan feature multiple source rocks,composite transportation,differential accumulation and late finalization.The natural gas in the Permian is mainly cracked gas from Permian marine mixed hydrocarbon source rocks,with cracked gas from crude oil in the deeper Sinian strata in local parts.The scale development of paleo-hydrocarbon reservoirs and the stable and good preservation conditions are the keys to the forming large-scale gas reservoirs. | LI Jianzhong BAI Bin BAI Ying LU Xuesong ZHANG Benjian QIN Shengfei SONG Jinmin JIANG Qingchun HUANG Shipeng | 2022 | Petroleum Exploration and Development2022，49，4： | 2 |
| 16 | Origins of partially reserved alkane δ^13C values for biogenic gases in China显示文摘 | Dai Jinxing Xia Xinyu Qin Shengfei | 2004 | Organic Geochemistry2004，35，4： | 1 |
| 17 | Geology of giant gas fields in China显示文摘 | Dai Jinxing Zou Caineng Qin Shengfei | 2008 | Marine and Petroleum Geology2008，25，4： | 1 |
| 18 | The controlling factors of oil and gas generation from coal in the Kuqa Depression of Tarim Basin, China显示文摘 | Qin Shengfei Dai Jinxing Liu Xianwei | 2007 | International Journal of Coal Geology2007，70，： | 1 |
| 19 | Origins of partially reversed alkane δ 13 C values for biogenic gases in China显示文摘 | Jinxing Dai Xinyu Xia Shengfei Qin Jingzhou Zhao | 2004 | Organic Geochemistry2004，，4： | 1 |
| 20 | Study on process and model of CBM dissipating显示文摘Coal Bed Methane(CBM) occurs in coal seams in the states of adsorption gas, free gas and water-dissolved gas. Its dissipating starts with desorption, and then it dissipates outwards in the states of free gas and water-dissolved gas. The dissipating approach is classified to three patterns: Free gas in pores dissipates through the cover rocks; hydrocarbon molecules in the cap-rocks and reservoir diffuse because of concentration gradient; gas dissolving in water is directly taken away by water. According to the controlling factors of CBM conservation and considering the cover rocks, soleplate, hydrological region identification and dissipating theory, three geological models of CBM dissipating are built: closed system model, lateral hydrological closed model and open system model. | Feng Hong Yan Song Zhenhong Chen Mengjun Zhao Shaobo Liu Shengfei Qin Guoyou Fu | 2005 | Chinese Science Bulletin2005，50，S1： | 1 |
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