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| 1 | The P-wave velocity structure of the lithosphere of the North China Craton——Results from the Wendeng-Alxa Left Banner deep seismic sounding profile显示文摘For the first time on the Chinese mainland, long-range wide-angle seismic reflection/refraction profiling technology has been applied to seismic wave phases from different depths and with different attributes within the various blocks of the North China Craton to characterize the structure of the crust and upper mantle lithosphere. By comparative analysis of the seismic wave phase characteristics in each block across a 1500-km-long east-west profile, we have identified conventional Pg, Pci, PmP and Pn phases in the crust, made a clear contrast between PL1 and PL2 waves belonging to two groups of lithospheric-scale phases, and produced a model of crust-mantle velocity structures and tectonic characteristics after one- and two-dimensional calculations and processing. The results show that the thickness of the crust and lithosphere gradually deepens from east to west along the profile. However, at the reflection/refraction interface, seismic waves in each group show obvious localized changes in each block. Also, the depth to the crystalline basement changes greatly, from as much as 7.8 km in the North China fault basin to only about 2 km beneath the Jiaodong Peninsula and Taihang-Lüliang area. The Moho morphology as a whole ranges from shallow in the east to deep in the west, with the deepest point in the Ordos Block at 47 km; in contrast, the North China Plain Block is uplifting. The L1 interface of the lithosphere is observed only to the west of Taihang Mountains, at a relatively slowly changing depth of about 80 km. The L2 interface varies from 75 to 160 km and shows a sharp deepening to the west of Taihang Mountains, forming a mutation belt. | WANG ShuaiJun WANG FuYun ZHANG JianShi JIA ShiXu ZHANG ChengKe ZHAO JinRen LIU BaoFeng | 2014 | Science China Earth Sciences2014,57,9: | 26 |
| 2 | 2-D P-wave velocity structure of lithosphere in the North China tectonic zone: Constraints from the Yancheng-Baotou deep seismic profile显示文摘We obtained the 2-D P-wave velocity structure of the lithosphere in the eastern North China Craton, Shanxi fault subsidence zone, and Yinchuan-Hetao fault subsidence zone by ray tracking technology based on six groups of clearly identified crustal phases and one group of lithospheric interface reflection phases from seismic recording sections of 21 shots along the 1300-km-long Yancheng-Baotou deep seismic wide-angle reflection/refraction profile. The results indicate significant differences between the lithospheric structure east and west of the Taihang Mountains, which is a gravity-gradient zone as well as a zone of abrupt change in lithospheric thickness and a separation zone of different rock components. East of the Taihang Mountains, the Mesozoic and Cenozoic lithospheric structure of the North China Craton has undergone strong reformation and destruction, resulting in the lithosphere thickness decreasing to 70–80 km. The North China Basin has a very thick Cenozoic sedimentary cover and the deepest point of crystalline basement is about 7.0 km, with the crustal thickness decreasing to about 31.0 km. The crystalline basement of the Luxi uplift zone is relatively shallow with a depth of 1.0–2.0 km and crustal thickness of 33.0–35.0 km. The Subei Basin has a thicker Cenozoic sedimentary cover and the bottom of its crystalline basement is at about 5.0–6.0 km with a crustal thickness of 31.0–32.0 km. The Tanlu fault is a deep fracture which cuts the lithosphere with a significant velocity structure difference on either side of the fault. The Tanlu fault plays an important role in the lithospheric destruction in the eastern part of the North China Craton. West of the Taihang Mountains, the crustal thickness increases significantly. The crust thickness beneath the Shanxi fault depression zone is about 46 km, and there is a low-velocity structure with a velocity of less than 6.1 km s?? in the upper part of the middle crust. Combined with other geophysical study results, our data shows that the lithospheric destruction at the Shaanxi-Shanxi fault depression zone and the Yinchuan-Hetao rift surrounding the Ordos block is non-uniform. The lithosphere thickness is about 80–90 km in the Datong-Baotou area, 75–137 km at the Dingxiang-Shenmu region, and about 80–120 km in the Anyang-Yichuan area. The non-uniform lithospheric destruction may be related to the ancient tectonic zone surrounding the Ordos block. This zone experienced multi-period tectonic events in the long-term process of its tectonic evolution and was repeatedly transformed and weakened. The weakening level is related to the interactions with the Ordos block. The continental collision between the Cenozoic India and Eurasia plates and N-E thrusting by the Qinghai Tibet Plateau block is causing further reformation and reduction of the lithosphere. | DUAN YongHong LIU BaoJin ZHAO JinRen LIU BaoFeng ZHANG ChengKe PAN SuZhen LIN JiYan GUO WenBin | 2015 | Science China Earth Sciences2015,58,9: | 14 |
| 3 | Deep seismic sounding data reveal the crustal structures beneath Zoigê basin and its surrounding folded orogenic belts显示文摘Songpan-Garze massif is located at the turning position of tectonics from the nearly west-east direction to the nearly north-south direction in the northeastern margin of Tibetan Plateau,with Zoigê basin in the centre of the massif.In this paper,we build a crustal structure model of Zoigê basin and its surrounding folded orogenic belts using the deep seismic sounding data in this region.We also discuss structures and properties of the basement in Zoigê basin,tectonic relations between Zoigê upland basin and its surrounding folded orogenic belts,crustal deformation and thickening in the northeastern margin of Tibetan Plateau,and decoupling and relaxing processes in the crust.The results indicate that a special 'Mesozoic basement' is formed of Triassic rocks with high density (2.65-2.75 g/cm3) and high velocity (5.6 km/s) in Zoigê basin.Songpan-Garze tectonic massif was transformed into two types of tectonic units with different crustal structures,i.e.,relatively stable Zoigê upland basin and active folded orogenic belts around the basin,in the course of the crustal material of Tibetan Plateau flowing eastward and obstructed by surrounding stable blocks.The thickening of the crust in the northeastern margin of Tibetan Plateau mainly occurred in the mid and lower crust,and the structure characterized by low velocities and multiple reflectors obviously appears in the folded orogenic belts around Zoigê basin.It implies that the mid and lower crust underwent a strong tectonic deformation in the folded orogenic areas.The thickness of the crust is about 50 km in Zoigê basin and the folded orogenic belts at the both southern and northern sides of Zoigê basin.The 'Mountain root' cannot be identified.It is inferred that during the later orogenic period the eastwards flowing deep materials moved clockwise along the relatively relaxing southern side around the eastern tectonic knot under the obstructing of surrounding rigid massifs,and it resulted in the strong stretching action of the folded orogenic belts around Zoigê basin. | JIA ShiXu,ZHANG XianKang,ZHAO JinRen,WANG FuYun,ZHANG ChengKe,XU ZhaoFan,PAN JiShun,LIU Zhi,PAN SuZhen & SUN GuoWei Geophysical Exploration Center,China Earthquake Administration,Zhengzhou 450002,China | 2010 | Science China Earth Sciences2010,53,2: | 11 |
| 4 | A study of electron-shuttle mechanism in Klebsiella pneumoniae based-microbial fuel cells显示文摘In microbial fuel cell (MFC), the rate of electron transfer to anode electrode is a key intrinsic limiting factor on the power output of MFCs. Using Klebsiella pneumoniae (K. pneumoniae) strain L17 as biocatalyst, we studied the mechanism of electron shuttle via self-producing mediator in a cubic air-chamber MFC. To eliminate the influence of biofilm mechanism, the anode electrode was coated with microfiltration membrane (0.22 μm). Data showed that the microfiltration membrane coated and uncoated MFCs achieved the maximum voltage outputs of 316.2 and 426.2 mV after 270 and 120 h, respectively. When the medium was replaced in MFCs that had the highest power generation, the power output dropped by 62.1% and 8.8%, and required 120 and 48 h to resume the original level in the coated and uncoated MFCs, respectively. The results suggested an electron-shuttle mechanism rather than biofilm mechanism was responsible for electricity generation in the membrane coated MFC. Cyclic voltammetric measurements demonstrated the presence of an electrochemical active compound produced by K. pneumoniae strain L17, which was identified to be 2,6-di-tert-butyl-p-benzoquinon (2,6-DTBBQ) by GC-MS. 2,6-DTBBQ, as a recyclable electron shuttle, could transfer electrons between K. pneumoniae L17 and the anode electrode. | DENG LiFang LI FangBai ZHOU ShunGui HUANG DeYin NI JinRen | 2010 | Chinese Science Bulletin2010,55,1: | 9 |
| 5 | Characteristics of Pb^(2+) biosorption with aerobic granular biomass显示文摘Experimental studies were conducted on the feasibility of aerobic granular biomass as a novel type of biosorbent for Pb2+ removal. The results show that the initial pH, Pb2+ concentration (C0) and biomass concentration (X0) affected the biosorption process significantly. Both the Freundlich and Langmuir isotherm models describe the biosorption process accurately, with correlation coefficients of 0.932 and 0.959 respectively. The Pb2+ biosorption kinetics is interpreted as having two stages, with the second stage described reasonably well by a Lagergren pseudo-second order model. Moreover, the surface change of granular biomass after the Pb2+ biosorption process appears to be caused by ion exchange and metal chelation according to the analysis results of Environmental Scanning Electron Microscopy (ESEM) and Energy Dispersive X-ray Spectroscopy (EDX). | YAO Lei YE ZhengFang WANG ZhongYou NI JinRen | 2008 | Chinese Science Bulletin2008,53,6: | 9 |
| 6 | Water demand for ecosystem protection in rivers with hyper-concentrated sediment-laden flow显示文摘Sediment transport is one of the main concerns in a river system with hyper-concentrated flows. Therefore, the water use for sediment transport must be considered in study on the water demand for river ecosystem. The conventional methods for calculating the Minimum Water Demand for River Ecosystem (MWDRE) are not appropriate for rivers with high sediment concentration. This paper studied the MWDRE in wet season, dry season and the whole year under different water-and-sediment conditions in the Lower Yellow River, which is regarded as a typical river with sediment-laden flows. The characteristics of MWDRE in the river are analyzed. Firstly, the water demand for sediment transport (WDST) is much larger than the demands for other riverine functions, the WDST accounts for the absolute majority of the MWDRE. Secondly, in wet season when the WDST is satisfied, not only most of the annual incoming sediment can be transported downstream, but also the water demands for other river functions can be satisfied automatically, so that the MWDRE in wet season is identical to the WDST. Thirdly, in dry season, when the WDST is satisfied, the water demands for other river functions can also be satisfied, but the low sediment transport efficiency results in significant waste of water resources. According to these characteristics and aiming at decreasing sediment deposition in the riverbed and improving the utilization efficiency of water resources, hydrological engineering works can be used to regulate or control flow and sediment so that the sediment incoming in dry season can be accumulated and be transported downstream intensively and thus efficiently in wet season. | LUO Huaming, LI Tianhong, NI Jinren & WANG Yudong Department of Environmental Engineering, Peking University, Beijing 100871, China The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China | 2004 | Science China(Technological Sciences)2004,47,z1: | 8 |
| 7 | North China sub-craton lithospheric structure elucidated through coal mine blasting显示文摘We present a super-range seismic observation along the >1300-km-long profile passing through the Yinchuan basin and the Ordos block from the blasting point towards the southeast triggered by a large-(dynamite) scale coal blast in the Ningxia Hui Autonomous Region's Helan Mountain (yielded a profile). The seismic wave information from the uppermost mantle reflecting different depths was obtained by the China continental seismic survey. Pn refracted waves from the uppermost mantle were effectively traced up to 500 km and beyond. The stable dynamic and kinematic characteristics of the Pn wave-group indicate that the uppermost mantle below the Ordos block is a gently changing structure with a weak positive gradient. If Pm1, Pm2 waves are considered as the wave groups from the upper mantle, there may be distinct structural strata in the upper-mantle structures with average velocities of 7.70―7.80 km/s and 8.10―8.20 km/s, respectively. Based on the travel-time curve feature of Pm1, Pm2 waves, there may be a certain layer with a reverse velocity between the M1 and M2 interfaces. The depth range indicated by them is about 110―120 km and 200―220 km. These phenomena basically reflect the structural features of the upper-mantle lithosphere in this region. The information obtained may provide meaningful references for surveying North China craton lithospheric structures, as well as under-standing the shapes and structures of different spherical layers within the upper-mantle. | ZHAO JinRen ZHANG XianKang WANG FuYun ZHANG ChengKe ZHANG JianShi LIU BaoFeng PAN SuZhen | 2009 | Chinese Science Bulletin2009,54,4: | 7 |
| 8 | Photocatalytic degradation of amoxicillin by carbon quantum dots modified K2Ti6O13 nanotubes:Effect of light wavelength显示文摘A novel carbon quantum dots modified potassium titanate nanotubes(CQDs/K2 Ti6 O13)composite photocatalyst was synthesized by hydrothermal treatment combined with calcination.X-ray diffraction(XRD)pattern and transmission electron microscopy(TEM)indicated formation of potassium titanate nanotubes and successful deposition of CQDs onto K2 Ti6 O13.The photocatalytic performance of CQDs/K2 Ti6 O13 composite was evaluated by degradation of amoxicillin(AMX)under the irradiation of visible light and lights with the wavelengths of 365,385,420,450,485,520,595 and 630 nm.The results showed that the photocatalytic activity of CQDs/K2 Ti6 O13 hybrid material was greatly enhanced compared with the neat K2 Ti6 O13 calcined at 300 ℃.The narrowed band gap energy(Eg)and transfer of photo-excited electron by CQDs inhibited the immediate combination of electron-hole pairs,thus promoting photocatalytic activity.Moreover,CQ,Ds/K2 Ti6 O13 exhibited a broad spectrum of photocatalytic ability and it was interesting that the photocatalytic activity decreased with the increase of the irradiation wavelength.Reactive oxygen species(ROS)quenching tests suggested the hole(h^+)and hydroxyl radical(^·OH)played the primary roles in photocatalytic degradation of AMX.Moreover,CQ.Ds/K2 Ti6 O13 showed good reusability for AMX photocatalytic degradation after five successive runs.This study proposed an available method for titanate nanomaterials modification,and the developed novel CQDs/K2 Ti6 O13hyb rid material is p ro mising fo r potential application on antibiotics removal fro m water and wastewater. | Qiankun Chen Long Chen Juanjuan Qi Yingqian Tong Yitao Lv Chaokai Xu Jinren Ni Wen Liu | 2019 | Chinese Chemical Letters2019,30,6: | 6 |
| 9 | Sorption of Triton X-100 on soil organic matter fractions:Kinetics and isotherms显示文摘Kinetics and isotherms of Triton X-100 sorption on soil,base-extracted soil(BE),humic acid(HA) and humin(HM) were investigated respectively to get better understanding on characteristics of the surfactant sorption onto different soil organic matters(SOMs).It was demonstrated that the kinetics results could be satisfactorily described by the pseudo-second order model.The half of the time to reach equilibrium(t1/2) for different sorbents followed the sequence of soil > HA > BE > HM.Furthermore,the calculated equilibrium sorption capacity(Ceq) was found in the sequence of HA > BE > HM > soil,which agreed well with the experimental results.The isotherms of Triton X-100 sorption on soil and HA could be well described by the S-type isotherm,but BE and HM by the L-type.The isotherms of all the four sorbents were found reasonably fitted to the Langmuir equation.The Kd value,defined as the ratio of Triton X-100 in sorbent and in the equilibrium solution for given concentrations,generally followed the order of HM > HA > soil > BE.Separated HM and HA showed high affnity for Triton X-100,but the HA and HM in soil and BE were tightly bounded by the minerals.Thus,the HA on the soil surface might dominate the sorption,whereas the bounded HM would play a key role upon the surfactants being penetrated inside the soil. | ZHANG Guangzhi HU Hao SUN Weiling NI Jinren | 2009 | Journal of Environmental Sciences2009,21,6: | 6 |
| 10 | Structural characteristics of river networks and their relations to basin factors in the Yangtze and Yellow River basins显示文摘The integration of rivers and basins highly implies the possible existence of certain relationships between hierarchical characteristics of river networks and primary basin factors.Here we investigated river networks in two large basins,the Yangtze River and the Yellow River,characterized with basic factors such as annual precipitation,slope,soil erodibility and vegetation.Hierarchical analysis demonstrated a fair self-similarity of river networks at the stream-order 1-5 in both rivers,described by the structural parameters including bifurcation ratio,side-branching ratio,drainage density,and length of headwater-river.Besides precipitation,basin slope was essential in shaping river networks in both basins,showing a significant positive correlation(R^2=0.39-0.85)to bifurcation ratio,side-branching ratio,and drainage density.Given the same basin slope(5°-15°),the higher soil erodibility and sparse vegetation would promote greater side-branching ratio and drainage density in the Yellow River,which were estimated 11.97%and 63.70%larger,respectively than those in the Yangtze River.This study highlights the importance to formulate basin-specific strategies for water and soil conservation in terms of different structures of river networks. | CHEN XiaBin WANG YiChu NI JinRen | 2019 | Science China(Technological Sciences)2019,62,11: | 5 |
| 11 | Solving the mystery of vanishing rivers in China显示文摘A major controversy was sparked worldwide by a recent national water census claiming that the number of Chinese rivers with watersheds>100 km^2 was less than half the previous estimate of 50000 rivers,which also stimulates debates on the potential causes and consequences.Here,we estimated the number of rivers in terms of stream-segmentation characteristics described by Horton,Strahler and Shreve stream-order rules,as well as their mixed mode for named rivers recorded in the Encyclopedia of Rivers and Lakes in China.As a result,the number of‘vanishing rivers’has been found to be highly relevant to statistical specifications in addition to the erroneous inclusion of pseudo-rivers primarily generated in arid or frost-thaw areas.The modified Horton stream-order scheme reasonably depicts the configuration of complete natural streams from headwater to destination,while the Strahler largely projects the fragmentation of the named river networks associated with human aggregation to the hierarchical river systems. | Yichu Wang Jinren Ni Yao Yue Jiaye Li Alistair GLBorthwick Ximing Cai An Xue Li Li Guangqian Wang | 2019 | National Science Review2019,6,6: | 4 |
| 12 | NF-κB and FosB mediate inflammation and oxidative stress in the blast lung injury of rats exposed to shock waves显示文摘Blast lung injury(BLI)is the major cause of death in explosion-derived shock waves;however,the mechanisms of BLI are not well understood.To identify the time-dependent manner of BLI,a model of lung injury of rats induced by shock waves was established by a fuel air explosive.The model was evaluated by hematoxylin and eosin staining and pathological score.The inflammation and oxidative stress of lung injury were also investigated.The pathological scores of rats’lung injury at 2 h,24 h,3 days,and 7 days post-blast were 9.75±2.96,13.00±1.85,8.50±1.51,and 4.00±1.41,respectively,which were significantly increased compared with those in the control group(1.13±0.64;P<0.05).The respiratory frequency and pause were increased significantly,while minute expiratory volume,inspiratory time,and inspiratory peak flow rate were decreased in a time-dependent manner at 2 and 24 h post-blast compared with those in the control group.In addition,the expressions of inflammatory factors such as interleukin(IL)-6,IL-8,FosB,and NF-κB were increased significantly at 2 h and peaked at 24 h,which gradually decreased after 3 days and returned to normal in 2 weeks.The levels of total antioxidant capacity,total superoxide dismutase,and glutathione peroxidase were significantly decreased 24 h after the shock wave blast.Conversely,the malondialdehyde level reached the peak at 24 h.These results indicated that inflammatory and oxidative stress induced by shock waves changed significantly in a time-dependent manner,which may be the important factors and novel therapeutic targets for the treatment of BLI. | Hong Wang Wenjuan Zhang Jinren Liu Junhong Gao Le Fang Zhiyong Liu Baoqing Xia Xiaolin Fan Cunzhi Li Qing Lu Airong Qian | 2021 | Acta Biochimica et Biophysica Sinica2021,53,3: | 4 |
| 13 | Microscopic view of phytoplankton along the Yangtze River显示文摘Phytoplankton play an important role in nutrient cycling and energy conversion. However, phytoplankton community is poorly understood in large river ecosystems. Based on the large-scale samplings conducted in spring and autumn of 2017, a systematic study has been made on seasonal and spatial distributions of phytoplankton community along the mainstream of the Yangtze River. As results, 6 phyla were identified and 59 phytoplankton species were detected using microscopy, including Bacillariophyta(29 species), Chlorophyta(13 species) and Cyanophyta(8 species) as the dominant group. Moreover, the density of phytoplankton was ranged 0.05×10^6–1.90×10^6 cells/L and the biomass was 0.01–1.01 mg/L, both reaching their maximum in the middle reach from Yichang to Wuhan. Significant seasonal difference of phytoplankton community was observed and spatial dissimilarity in spring was revealed. The cell abundance and biomass of phytoplankton could be fairly estimated by chlorophylla, and redundancy analysis indicated that water temperature, dissolved oxygen, biochemical oxygen demand, nitrite, and ammonia nitrogen were the most important explanatory environmental factors for phytoplankton compositions in the Yangtze River. | LIU YuXin XU XuMing WANG Ting NI JinRen | 2019 | Science China(Technological Sciences)2019,62,11: | 3 |
| 14 | Three Gorges Dam: friend or foe of riverine greenhouse gases?显示文摘Dams are often regarded as greenhouse gas(GHG) emitters. However, our study indicated that the world’s largest dam, the Three Gorges Dam(TGD), has caused significant drops in annual average emissions of CO, CHand NO over 4300 km along the Yangtze River, accompanied by remarkable reductions in the annual export of CO(79%), CH(50%) and NO(9%) to the sea. Since the commencement of its operation in 2003, the TGD has altered the carbonate equilibrium in the reservoir area, enhanced methanogenesis in the upstream, and restrained methanogenesis and denitrification via modifying anoxic habitats through long-distance scouring in the downstream. These findings suggest that ‘large-dam effects’ are far beyond our previous understanding spatiotemporally, which highlights the fundamental importance of whole-system budgeting of GHGs under the profound impacts of huge dams. | Jinren Ni Haizhen Wang Tao Ma Rong Huang Philippe Ciais Zhe Li Yao Yue Jinfeng Chen Bin Li Yuchun Wang Maosheng Zheng Ting Wang Alistair G.L.Borthwick | 2022 | National Science Review2022,9,6: | 3 |
| 15 | Mechanism of combination membrane and electro-winning process on treatment and remediation of Cu^(2+) polluted water body显示文摘Mechanism of treatment and remediation of synthetic Cu2+ polluted water body by membrane and electro-winning combination process was investigated.The influences of electrolysis voltage,pH,and electrolysis time on the metal recovery effciencies were studied.Relationship between trans-membrane pressure drop(△P),additions ratio,initial Cu2+ concentration on operating effciency,stability of membrane and the possibility of water reuse were also investigated.The morphology of membrane and electrodes were observed using scanning electron microscopy(SEM),the composition of surface deposits was ascertained using combined energy dispersive X-ray spectroscopy(EDX) and atomic absorption spectrophotometer.The results showed that using low pressure reverse osmosis(LPRO),Cu2+ concentration could increase from 20 to 100 mg/L or even higher in concentrated solutions and permeate water conductivity could be less than 20 μS/cm.The addition of sodium dodecy/sulfate sodium dodecyl sulfate improved Cu2+ removal effciency,while EDTA had little side influence.In electro-reduction process,using plante electrode cell,Cu2+ concentration could be further reduced to 5 mg/L,and the average current effciency ranged from 9% to 40%.Using 3D electrolysis treatment,Cu2+ concentration could be reduced to 0.5 mg/L with a current effciency range 60%-70%. | ZHANG Linnan WU Yanjun QU Xiaoyan LI Zhenshan NI Jinren | 2009 | Journal of Environmental Sciences2009,21,6: | 3 |
| 16 | Exploration and Research of Deep Crustal Structures in the Zhangzhou Basin and Its Vicinity显示文摘The Zhangzhou basin is located at the middle section of the southeast coast seismic zone of the mainland of China. Using high-resolution refraction and wide-angle reflection/refraction seismic profiling of Zhangzhou basin and its vicinity, we have obtained the crustal geometric structure and velocity structure as well as the geometric configuration and structural relationship between the deep and shallow fractures.The results show that the crust in the region is divided into the upper crust and lower crust. The thickness of the upper crust is 16.5km~18.8km, and that of the lower crust is 12.0km~13.0km. The upper crust is further divided into an upper and lower section. In the lower section of the upper crust, there is a low-velocity layer with a velocity of about 6.00km/s; the depth of the top surface of the low-velocity layer is about 12.0km, and the thickness is about 5.0km. The lower crust is also divided into an upper and lower section. The depth of Moho is 29.0km~31.8km. There are 6 normal faults in the shallow crust in this region, and most of them extend downwards to a depth of less than 4km, the maximum depth is about 5km.Below the shallow normal faults, there is a conjectural high-dip angle deep fault zone. The fault zone extends downwards till the Moho and upwards into the low-velocity layer in lower section of the upper crust. The deep and shallow faults are not tectonically connected. The combination character of deep and shallow structures in the Zhangzhou basin indicates that the Jiulongjiang fault zone is a deep fault zone with distinct characteristics and a complex deep and shallow structure background. The acquisition of deep seismic exploration results obviously enhanced the reliability of explanation of deep-structural data and the exploration precision of the region. The combination of deep and shallow structures resulted in uniform explanation results. The delamination of the crust and the characteristic of the structures are more precise and explicit. We discovered for the first time the combination characteristics of extensional structures and listric faults in the upper crust. This is not only helpful to the integrative judgment of earthquake risk in Zhangzhou and its vicinity, but also of importance for deepening the knowledge of deep dynamic processes in the southeast coast seismic zone. | Zhu Jinfang Fang Shengming Zhang Xiankang Qu Guosheng Huang Zonglin Zhang Chengke Zhao Jinren | 2006 | Earthquake Research in China2006,20,4: | 2 |
| 17 | ON THE VERTICAL DISTRIBUTION OF SUSPENDED SEDIMENT CONCENTRATION显示文摘The problem of sediment concentration distribution in a vertical for channel and pipe flows is studied in this paper. Considering the variation of the vertical component of the fluctuation velocity v as an independent variable, two types of sediment concentration distribution can be derived. However, only one type of distribution is commonly quoted while the other one rarely reported. In this paper explanation for such phenomena is given and conditions for the occurrence of both types are also discussed. | NI Jinren and WANG Guangqian Dr. of Eng- Dept. of Geography, Peking University, China Dr. of Eng. Institute of Mechanics, Chinese Academy of Sciences, China | 1991 | International Journal of Sediment Research1991,6,3: | 2 |
| 18 | Advanced treatment of biologically pretreated coking wastewater by electrochemical oxidation using boron-doped diamond electrodes显示文摘 | Xiuping Zhu Jinren Ni Peng Lai | 2009 | Water Research2009,,17: | 2 |
| 19 | Paper sludge as a feasible soil amendment for the immobilization of Pb^(2+)显示文摘The possibility of amending Pb 2+ contaminated soil (S) with paper sludge (P) was investigated through adsorption and desorption experiments. The adsorption process of Pb 2+ in soil containing paper sludge (SP) could be well described by pseudo second-order kinetic model and the Langmuir isotherm model. After P addition, the equilibrium time decreased greatly (from 28 to 8 hr) and the Pb 2+ maximum adsorbed amount (Q max ) increased by a factor of more than three to 102.04 mg/g. Q max reached its maximum as S:P was 9:1 (m/m) after 10 days contact between S and P. Moreover, Pb 2+ adsorbed amount increased with the rise of pH during the adsorption process. Desorption experiments indicated that Pb 2+ adsorption in SP was irreversible. The metal ion fraction was analyzed with Energy Dispersive Spectrometer and Environmental Scan Electron Microscope. As a result, the addition of P to soil was found to induce a decrease in the mobile forms. The Pb 2+ complexes formation in the presence of carbonates was the main adsorption mechanism. Overall, the paper sludge could be one of the promising soil amendments for the remediation of soil with Pb 2+ contamination. | Xiaojia He, Lei Yao, Zhu Liang, Jinren NiThe Key Laboratory of Water and Sediment Sciences, Ministry of Education, Department of Environmental Engineering, Peking University, Beijing 100871, China. | 2010 | Journal of Environmental Sciences2010,22,3: | 2 |
| 20 | Advanced treatment of biologically pretreated coking wastewater by electrochemical oxidation using boron-doped diamond electrodes显示文摘 | Zhu Xiuping Ni Jinren Lai Peng | 2009 | Water Research2009,43,17: | 1 |