|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | A hydrocarbon enrichment model and prediction of favorable accumulation areas in complicated superimposed basins in China显示文摘The geologic conditions of superimposed basins in China are very complicated. This is mainly shown by multi-phase structural evolution,multiple sets of source-reservoir-cap rock combinations,multiple stages of hydrocarbon generation and expulsion from source rocks,multi-cycle hydrocarbon enrichment and accumulation,and multi-phase reservoir adjustment and reconstruction. The enrichment,accumulation and distribution of hydrocarbon is mainly controlled by the source rock kitchen,paleoanticline,regional cap rock and intensity of tectonic movement. In this paper,the T-BCMS model has been developed to predict favorable areas of hydrocarbon accumulation in complicated superimposed basins according to time and spatial relationships among five key factors. The five factors include unconformity surface representing tectonic balancing(B) ,regional cap rock representing hydrocarbon protection(C) ,paleo-anticline representing hydrocarbon migration and accumulation(M) ,source rock kitchen representing hydrocarbon generation and expulsion(S) and geological time(T) . There are three necessary conditions to form favorable areas of hydrocarbon accumulation. First,four key factors BCMS should be strictly in the order of BCMS from top to bottom. Second,superimposition of four key factors BCMS in the same area is the most favorable for hydrocarbon accumulation. Third,vertically ordered combination and superimposition in the same area of BCMS should occur at the same geological time. The model has been used to predict the most favorable exploration areas in Ordovician in the Tarim Basin in the main hydrocarbon accumulation periods. The result shows that 95% of the discovered Ordovician hydrocarbon reservoirs are located in the predicted areas,which indicates the feasibility and reliability of the key factor matching T-BCMS model for hydrocarbon accumulation and enrichment. | Pang Xiongqi Meng Qingyang Jiang Zhenxue Liu Luofu Lu Xiuxiang | 2010 | Petroleum Science2010，7，1： | 16 |
| 2 | Impact of China’s Air Pollution Prevention and Control Action Plan on PM2.5 chemical composition over eastern China显示文摘China promulgated the Air Pollution Prevention and Control Action Plan(the Action Plan)in 2013 and developed stringent control measures to mitigate fine particulate matter(PM2.5) pollution.Here,we investigated the PM2.5 chemical composition changes over eastern China associated with the Action Plan during 2013-2017 using satellite-based PM2.5 chemical composition data derived using CMAQ simulations and satellite inputs.The PM2.5 concentrations decreased considerably during this time as a result of the reductions in all chemical species in PM2.5.The population-weighted mean concentrations over eastern China decreased from 11.1 to 6.7μgm-3 for SO42-,13.8-13.1μgm-3 for NO3-,7.4-5.8μgm-3 for NH4+,9.9-8.4μgm-3 for OM,4.6-3.8μg m-3 for BC and 12.9-9.6μg m-3 for other species in PM2.5.SO42-had the largest reduction of 40%,while NO3-had the lowest reduction of 5%,resulting in a greater fraction of NO3-and a smaller fraction of SO42-in PM2.5.Among the three key regions,Beijing-Tianjin-Hebei had the largest reduction in PM2.5 and its chemical compositions.The decrease in SO42-concentrations was in line with the reduction of SO2 emissions,and the major driver of the SO2 emission reductions was the industrial sector.The decrease in NO3 concentrations was limited because the decrease in SO2 emissions and the stable NH3 emissions facilitated the formation of NO3-from HNO3,which partially offset the reduction in NOx emissions driven by the power sector.To mitigate PM2.5 pollution more effectively,future efforts are needed to reduce NH3 emissions. | Guannan GENG Qingyang XIAO Yixuan ZHENG Dan TONG Yuxuan ZHANG Xiaoye ZHANG Qiang ZHANG Kebin HE Yang LIU | 2019 | Science China Earth Sciences2019，62，12： | 16 |
| 3 | When water meets iron at Earth's core-mantle boundary显示文摘Hydrous minerals in subducted crust can transport large amounts of water into Earth's deep mantle. Our laboratory experiments revealed the surprising pressure-induced chemistry that, when water meets iron at the core-mantle boundary, they react to form an interlayer with an extremely oxygen-rich form of iron, iron dioxide, together with iron hydride. Hydrogen in the layer will escape upon further heating and rise to the crust, sustaining the water cycle. With water supplied by the subducting slabs meeting the nearly inexhaustible iron source in the core, an oxygen-rich layer would cumulate and thicken, leading to major global consequences in our planet. The seismic signature of the D″ layer may echo the chemical complexity of this layer. Over the course of geological time, the enormous oxygen reservoir accumulating between the mantle and core may have eventually reached a critical eruption point. Very large-scale oxygen eruptions could possibly cause major activities in the mantle convection and leave evidence such as the rifting of supercontinents and the Great Oxidation Event. | Ho-Kwang Mao Qingyang Hu Liuxiang Yang Jin Liu Duck Young Kim Yue Meng Li Zhang Vitali B.Prakapenka Wenge Yang Wendy L.Mao | 2017 | National Science Review2017，4，6： | 14 |
| 4 | FGF21 treatment ameliorates alcoholic fatty liver through activation of AMPK-SIRT1 pathway显示文摘成纤维细胞生长因素 21 (FGF21 ) , FGF 总科的一个最近识别的成员,主要从肝和脂肪质的纸巾被分泌并且在改进新陈代谢的症候群和动态平衡起一个重要作用。这研究的目的是在含酒精的脂肪肝疾病(AFLD ) 评估 FGF21 的角色并且决定它是否在 AFLD 上有治疗学的效果。在这份报纸,我们在长期的乙醇 gavage 和对待白酒的 HepG2 房间的一个鼠科的模型在导致白酒的肝损害上测试了 FGF21 的效果。男千米;公里老鼠每天收到了 5 g/kg 乙醇 gavage 的单个剂量 6 个星期,它导致了重要脂肪肝和肝损害。导致白酒的脂肪肝房间模型被在 75 公里的最后的集中增加乙醇进 HepG2 房间文化的媒介 9 天完成。结果与 recombinant FGF21 显示出那个处理在长期的乙醇 gavage 和对待白酒的 HepG2 房间的一个鼠科的模型的改善含酒精的脂肪肝和肝损害。另外, FGF21 处理下面调整丰满的酸的肝的表示合成的关键酶,激活的肝的 AMPK-SIRT1 小径和显著地下面调整的肝的氧化压力蛋白质。一起拿, FGF21 由 AMPK-SIRT1 小径的激活在 vitro 并且在 vivo 改正 AFLD 的多重新陈代谢的参数。 | Shenglong Zhu Lei Ma Yunzhou Wu Xianlong Ye Tianyuan Zhang Qingyang Zhang Lubna Muhi Rasoul Yunye Liu MO Guo Bing Zhou Guiping Ren Deshan Li | 2014 | Acta Biochimica et Biophysica Sinica2014，46，12： | 11 |
| 5 | Novel roll effector based on zero-mass-flux dual synthetic jets and its flight test显示文摘The autonomous and controllable Dual Synthetic Jet Actuator(DSJA)is firstly integrated into the Unmanned Aerial Vehicle(UAV),and flight tests without the deflection of rudders are carried out to verify the viability of DSJA to control the attitudes of UAV during cruising.DSJA is improved into an actuator with two diaphragms and three cavities,which has higher energy levels.Actuators,differentially distributed on both sides of the wings,are installed on the trailing edge close to the wing tips.Flight tests,containing Differential Circulation Control(DCC)using double-side actuators,Positive Circulation Control(PCC)using left-side actuators and Negative Circulation Control(NCC)using right-side actuators,are implemented at cruising speed of 25 m/s.Results show that roll attitude control without rudders could be realized by DSJAs.DCC and NCC can generate the rightward roll and yaw angular velocity,prompting UAV to turn right.The stronger controlling ability can be achieved by DCC,with the maximum roll angular velocity of 15.62(°)/s.PCC can generate a rightward roll moment,but a leftward yaw moment will be produced at the same time.Leftward yaw induces the leftward rolling moment,which weakens the roll control effect,making UAV keep to yaw to the left with a small slope. | Zhenbing LUO Zhijie ZHAO Jiefu LIU Xiong DENG Mu ZHENG Hang YANG Qingyang CHEN Shiqing LI | 2022 | Chinese Journal of Aeronautics2022，35，8： | 7 |
| 6 | The influence of pore size distribution on thermal conductivity,permeability, and phase change behavior of hierarchical porous materials显示文摘Porous foams have been widely employed to improve heat storage rate and prevent leakage of phase change materials(PCMs).Actual porous foams have non-uniform or hierarchical pore size distribution, which is usually neglected in most researches.Here, we establish hierarchical porous models considering different pore size distributions by using Voronoi tessellations. Effects of pore size distribution on thermal conductivity, permeability, and phase change behavior of hierarchical porous foams/PCMs composites are investigated. Uneven pore size distributions are found to decrease the thermal conductivity of porous foams to some extent. On the other hand, the permeability can be reduced by 27.6%, and the heat storage rate can be improved by 7.7% by introducing moderate hierarchy without changing the total porosity. This work opens a new route to enhance heat storage performance of PCMs via leveraging hierarchy of pore size distribution of porous foams. | LIU XiangLei SONG FangZhou XU Qiao LUO QingYang TIAN Yang LI JiaWei YANG XinMeng JIN Yi | 2021 | Science China(Technological Sciences)2021，64，11： | 3 |
| 7 | New WHO global air quality guidelines help prevent premature deaths in China显示文摘The air quality guidelines (AQGs) issued by the World Health Organization (WHO) in 2005 are key references for the National Ambient Air Quality Standards (NAAQSs) in China.On 22September 2021,the WHO issued new AQGs (NAQGs)[1],which propose more stringent targets to control exposure to multiple air pollutants,including fine particulate matter (PM_(2.5)) and ozone (O_(3)),to which,in 2019,451 million premature deaths,globally,were attributable [2]. | Tao Xue Guannan Geng Xia Meng Qingyang Xiao Yixuan Zheng Jicheng Gong Jun Liu Wei Wan Qiang Zhang Haidong Kan Shiqiu Zhang Tong Zhu | 2022 | National Science Review2022，9，4： | 3 |
| 8 | Influence factors of two dimensional position map on photomultiplier detector block designed by quadrant sharing technique显示文摘The position decoding accuracy and the spatial resolution of positron emission tomography detectors are greatly influenced by the performance of the two-dimensional position map,including the gain uniformity of photomultiplier tube (PMT),the baseline offset of the PMT signals and the accuracy of analogue to digital converter (ADC).In this work,a PMT-quadrant sharing detector was designed.Two data acquisition platforms are employed to conduct the influence factors on the two-dimensional position map performances,one was that the waveforms of the PMT signals were scanned by the sequence acquisition mode based on the oscilloscope of LeCroy waveRunner 204MXi-A,and another was a self-developed high speed ADC data acquisition module.Results show that the event decoding positions were concentrated on the PMT with higher gain,the position map was distorted at the baseline offset of signal,and the cross-line artifacts were caused by the insufficient ADC sampling bit for a larger size position map.All the parameters need be adjusted properly to stabilize a real system,and the flexible oscilloscope platform can be used to design the detector block and the other platform with high ADC accuracy.Likely,the electrical circuit with a proper ADC accuracy adjusts the PMT gains and baseline offsets. | WEI Qingyang WANG Shi Ma Tianyu MA Fei DAI Tiantian XU Tianpeng WU Zhaoxia JIN Yongjie LIU Yaqiang | 2011 | Nuclear Science and Techniques2011，22，4： | 3 |
| 9 | A high-resolution small animal SPECT system developed at Tsinghua显示文摘An SPECT system dedicated to small animal imaging shall be of a millimeter spatial resolution or even better.This study was aimed at achieving 0.5-mm spatial resolution for a small animal SPECT system at low cost.It was developed from a single-head clinical SPECT scanner,with a seven-pinhole collimator and a four-degree-offreedom motion control stage.Several key techniques were developed,including high-resolution image reconstruction algorithm,high accuracy geometrical calibration method,and optimized system matrix derivation scheme.The system matrix was derived from Monte-Carlo simulation and de-noised by fitting each point spread function to a two dimensional Gaussian function.Experiments of point source and ultra micro hot rod phantom were conducted.With a spatial resolution of 0.5-0.6 mm,this system provides a practical way for low-cost high-resolution animal imaging on a clinic SPECT system. | DAI Tiantian MATianyu LIU Hui CUI Junjian WEI Qingyang LIU Yaqiang WANG Shi | 2011 | Nuclear Science and Techniques2011，22，6： | 3 |
| 10 | Deep mantle hydrogen in the pyrite-type FeO_(2)–FeO_(2)H system显示文摘The pyrite-type FeO_(2)and FeO_(2)H were synthesized at the pressure-temperature conditions relevant to Earth’s deep lower mantle.Through the water-iron reaction,the pyrite-phase is a good candidate to explain the chemical heterogeneities and seismological anomalies at the bottom of the mantle.The solid solution of pyrite-type FeO_(2)and FeO_(2)H,namely the FeO_(2)Hx(0≤x≤1),is particularly interesting and introduces puzzling chemical states for both the O and H atoms in the deep mantle.While the role of H in the FeO_(2)–FeO_(2)H system has been primarily investigated,discrepancies remain.In this work,we summarize recent progress on the pyrite-phase,including FeO_(2),FeO_(2)H,and FeO_(2)Hx,which is critical for understanding the water cycling,redox equilibria,and compositional heterogenicities in the deep lower mantle. | Qingyang Hu Jin Liu | 2021 | Geoscience Frontiers2021，12，2： | 3 |
| 11 | GATE simulation based feasibility studies of in-beam PET monitoring in ^(12)C beam cancer therapy显示文摘In comparison with conventional radiotherapy techniques,12C beam therapy has its significant advantage in cancer treatment because the radiation dose are mostly concentrated near the Bragg peak region and damage to normal tissues along the beam path is thus greatly reduced.In-beam PET provides a way to monitor dose distribution inside human body since several kinds of positron-emitting nuclei are produced through the interaction between 12C beam and body matters.In this work,we study the quantitative relationship between the spatial location of the Bragg peak and the spatial distribution of positrons produced by positron-emitting nuclei.Monte Carlo package GATE is used to simulate the interactions between the incident 12C beam of different energies(337.5,270.0 and 195.0 MeV/u) and various target matters(water,muscle and spine bone).Several data post-processing operations are performed on the simulated positron-emitting nuclei distribution data to mimic the impacts of positron generation and finite spatial resolution of a typical PET imaging system.Simulation results are compared to published experimental data for verification.In all the simulation cases,we find that 10C and 11C are two dominant positron-emitting nuclei,and there exists a significant correlation between the spatial distributions of deposited energy and positrons.Therefore,we conclude that it is possible to determine the location of Bragg peak with 1 mm accuracy using current PET imaging systems by detecting the falling edge of the positron distribution map in depth direction. | WU Jing LIU Yaqiang MA Tianyu WEI Qingyang WANG Shi CHENG Jianping | 2010 | Nuclear Science and Techniques2010，21，5： | 2 |
| 12 | Evidence for oxygenation of Fe-Mg oxides at mid-mantle conditions and the rise of deep oxygen显示文摘As the reaction product of subducted water and the iron core,FeO2 with more oxygen than hematite(Fe_(2)O_(3))has been recently recognized as an important component in the D'layer just above the Earth’s core-mantle boundary.Here,we report a new oxygen-excess phase(Mg,Fe)_(2)O_(3)+δ(0<δ<1,denoted as‘OE-phase’).It forms at pressures greater than 40 gigapascal when(Mg,Fe)-bearing hydrous materials are heated over 1500 kelvin.The OE-phase is fully recoverable to ambient conditions for ex situ investigation using transmission electron microscopy,which indicates that the OE-phase contains ferric iron(Fe^(3+))as in Fe_(2)O_(3) but holds excess oxygen through interactions between oxygen atoms.The new OE-phase provides strong evidence that H_(2)O has extraordinary oxidation power at high pressure.Unlike the formation of pyrite-type FeO_(2)H_(x) which usually requires saturated water,the OE-phase can be formed with under-saturated water at mid-mantle conditions,and is expected to be more ubiquitous at depths greater than 1000 km in the Earth’s mantle.The emergence of oxygen-excess reservoirs out of primordial or subducted(Mg,Fe)-bearing hydrous materials may revise our view on the deep-mantle redox chemistry. | Jin Liu Chenxu Wang Chaojia Lv Xiaowan Su Yijin Liu Ruilian Tang Jiuhua Chen Qingyang Hu Ho-Kwang Mao Wendy L.Mao | 2021 | National Science Review2021，8，4： | 2 |
| 13 | Effects of phenanthrene on hepatic enzymatic activities in tilapia(Oreochromis niloticus ♀×O.aureus ♂)显示文摘The effects of phenanthrene(Phe) on hepatosomatic index(HSI) and hepatic enzymatic activities in hybrid tilapia(Oreochromis niloticus ♀× O.aureus ♂) were investigated via the static freshwater exposure at dosage of 50,100,and 400 μg/L for 4-14 d.Compared with the control group,HSI was significantly decreased(P < 0.05) at 400 μg/L at day 14.Increased enzymatic activities(P < 0.05) were observed for catalase(CAT),glutathione peroxidase(GPx) and superoxide dismutase(SOD) at either 100 or 400 μg/L at day 8 and 14,as well as for CAT at 50 μg/L at day 14,except for GPx at 400 μg/L at day 8.Ethoxyresorufin O-deethylase(EROD) activity was significantly increased(P < 0.05) at all dosage at day 4 as well as at 50 μg/L at day 8,but significantly decreased at either 100 or 400 μg/L at day 14(P < 0.05).Glutathione-S-transferase(GST) activity was not affected.The results suggest that CAT,GPx,SOD and EROD,as well as HSI in tilapia may be used as the biomarkers or indexes for evaluating or monitoring the pollution of polycyclic aromatic hydrocarbons(PAHs) such as Phe. | XU Wenju LI Yuanyou WU Qingyang WANG Shuqi ZHENG Huaiping LIU Wenhua | 2009 | Journal of Environmental Sciences2009，21，6： | 1 |
| 14 | Chemical characteristics and source apportionment of PM 10 during Asian dust storm and non-dust storm days in Beijing显示文摘 | Qingyang Liu Yanju Liu Jianxin Yin Meigen Zhang Tingting Zhang | 2014 | Atmospheric Environment2014，，： | 1 |
| 15 | Dynamics response analysis of airborne external storage system with clearance between missile-frame显示文摘Considering the aircraft and its external components are subjected to complex and variable aerodynamic loads during the working process,the missile-frame clearance system of the airborne external missile is investigated.The random vibration characteristics of the airborne external components are analyzed by finite element method.The finite element model is optimized with reference to the test results,and the effects of different clearance on the dynamic response of the missile-frame system are compared.The result shows that the frequency response curves of the same position and the resonant peak frequencies are consistent under different clearances.The acceleration response at both ends of the missile is large and the amplitude near the center of mass is gentle.The results can be used to predict reasonable missile-frame clearance and make guidance to the structural design and reliability analysis of the missile-frame system. | Yongfeng YANG Qingyang ZHENG Jianjun WANG Zhongfu MA Xiangqiu LIU | 2020 | Chinese Journal of Aeronautics2020，33，12： | 1 |
| 16 | Hydrothermal synthesis of large-sized hydroxyapatite whiskers regulated by glutamic acid in solutions with low supersaturation of precipitation显示文摘 | Chengfeng Li Shuguang Liu Guochang Li Jiahai bai Weiwei Wang Qingyang Du | 2010 | Advanced Powder Technology2010，，4： | 1 |
| 17 | Mineralogy of the deep lower mantle in the presence of H_(2)O显示文摘Understanding the mineralogy of the Earth’s interior is a prerequisite for unravelling the evolution and dynamics of our planet.Here,we conducted high pressure-temperature experiments mimicking the conditions of the deep lower mantle(DLM,1800–2890 km in depth)and observed surprising mineralogical transformations in the presence of water.Ferropericlase,(Mg,Fe)O,which is the most abundant oxide mineral in Earth,reacts with H_(2)O to form a previously unknown(Mg,Fe)O_(2)H_(x)(x≤1)phase.The(Mg,Fe)O_(2)H_(x) has a pyrite structure and it coexists with the dominant silicate phases,bridgmanite and post-perovskite.Depending on Mg content and geotherm temperatures,the transformation may occur at 1800 km for(Mg_(0.6)Fe_(0.4))O or beyond 2300 km for(Mg_(0.7)Fe_(0.3))O.The(Mg,Fe)O_(2)H_(x) is an oxygen excess phase that stores an excessive amount of oxygen beyond the charge balance of maximum cation valences(Mg^(2+),Fe^(3+) and H^(+)).This important phase has a number of far-reaching implications including extreme redox inhomogeneity,deep-oxygen reservoirs in the DLM and an internal source for modulating oxygen in the atmosphere. | Qingyang Hu Jin Liu Jiuhua Chen Bingmin Yan Yue Meng Vitali B.Prakapenka Wendy L.Mao Ho-Kwang Mao | 2021 | National Science Review2021，8，4： | 1 |
| 18 | High performance top-emitting and transparent white organic light-emitting diodes based on Al/Cu/TcTa transparent electrodes for active matrix displays and lighting applications显示文摘 | Zhensong Zhang Pingrui yan Shouzhen Yue Guohua Xie Yu Chen Qingyang Wu Dalong Qu Yi Zhao Shiyong Liu | 2013 | Organic Electronics2013，，6： | 1 |
| 19 | 3-aminopropyltriethoxysilane functionalized nanoscale zero-valent iron for the removal of dyes from aqueous solution显示文摘 | Junying Zhang Qingyang Liu Yuanju Ding Yiling Bei | 2011 | Polish Journal of Chemical Technology2011，，2： | 1 |
| 20 | Direct determination of mercury in white vinegar by matrix assisted photochemical vapor generation atomic fluorescence spectrometry detection显示文摘 | Qingyang Liu | 2010 | Spectrochimica Acta Part B: Atomic Spectroscopy2010，，7： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员