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| 1 | An Important Spreading Event of the Neo-Tethys Ocean during the Late Jurassic and Early Cretaceous: Evidence from Zircon U-Pb SHRIMP Dating on Diabase in Nagarze, Southern Tibet显示文摘Widely distributed in Gyangze-Chigu area, southern Tibet, NW- and nearly E-W-trending diabase(gabbro)-gabbro diorite dykes are regarded as the product of the large-scale spreading of the late Neo-Tethys Ocean. In order to constrain the emplacement age of these dykes, zircons of two samples from diabases in Nagarze were dated by using the U-Pb SHRIMP method. Two nearly the same weighted mean 206Pb/238U ages were obtained in this paper, which are 134.9±1.8 Ma (MSWD= 0.65) and 135.5±2.1 Ma (MSWD=1.40), respectively. They not only represent the crystallization age of the diabase, but also documented an important spreading event of the Neo-Tethys Ocean during the late Jurassic and early Cretaceous. This dating result is of great significance to reconstruct the temporal framework of the late Neo-Tethys Ocean in the Qinghai-Tibet Plateau. | JIANG Sihong NIE Fengjun HU Peng LIU Yan | 2006 | Acta Geologica Sinica(English Edition)2006，80，4： | 28 |
| 2 | Effects of landuse change on surface runoff and sediment yield at different watershed scales on the Loess Plateau显示文摘Erosion and sediment yield from large and small watersheds exhibit different laws. Variations in surface runoff and sediment yield because of landuse change in four watersheds of different scales from 1 km2 to 73 km2 were analyzed. Due to reforestation and farmland terracing, surface runoff and sediment yield reduced by 20-100% and 10-100% respectively. Reductions in surface runoff were differed significantly under different precipitation regimes. For the large watershed (73 km2) landuse change had similar effects on surface runoff regardless of changing of precipitation. For the small watershed (1 km2) landuse change had fewer effects on surface runoff under high precipitation. The relative changes of sediment yield in the four watersheds under reforestation and farmland terracing decreased as precipitation increased from 350 mm to 650 mm, then increased as precipitation increased from 650 mm to 870 mm. Where initial forest coverage rate was below 45%, sediment yield decreased dramatically as forest coverage rate increased. Watershed management with aiming at reducing both surface runoff and sediment yield should be conducted both on sloping surfaces and in channels in large watersheds. | ZHANG Xiaoming CAO Wenhong GUO Qingchao WU Sihong | 2010 | International Journal of Sediment Research2010，25，3： | 20 |
| 3 | ^(40)Ar/^(39)Ar Dating of Deformation Events and Reconstruction of Exhumation of Ultrahigh-Pressure Metamorphic Rocks in Donghai, East China显示文摘Recent investigations reveal that the ultrahigh-pressure metamorphic(UHPM)rocks in the Donghai region of East China underwent ductile and transitional ductile-brittle structural events during their exhumation.The earlier ductile deformation took place under the condition of amphibolite facies and the later transitional ductile-brittle deformation under the ondition of greenschist facies.The hanging walls moved southeastward during both of these two events.The ^40Ar/^39Ar dating of muscovites from muscovite-plagioclase schists in the Haizhou phosphorous mine,which are structurally overlain by UHPM rocks,yields a plateau age of 218.0±2.9 Ma and isochron age of 219.8Ma,indicating that the earlier event of the ampibolite-facies deformation probably took place about 220Ma ago.The ^40Ar/^39Ar dating of oriented amphiboles parallel to the movement direction of the hanging wall on a decollement plane yields a plateau age of 213.1±0.3 Ma and isochron age of 213.4±4.1Ma,probably representing the age of the later event.The dating of pegmatitic biotites and K-feldspars near the decollement plane from the eastem Fangshan area yield plateau ages of 203.4±0.3Ma,203.6±0.4Ma and 204.8±2.2Ma,and ischron ages of 204.0±2.0Ma,200.6±3.1Ma and 204.0±5.0Ma,respectively,implying that the rocks in the studied area had not been cooled down to closing temperature of the dated biotites and K-feldspars until the beginning of the Jurassic (about204Ma).The integration of these data with previous chronological ages on the ultrahigh-pressure metamorphism lead to a new inference on the exhumation of the UHPM rocks.The UHPM rocks in the area were exhumed at the rate of 3-4km/Ma from the mantle(about80-100km below the earth'ssurface at about 240Ma)to the lower crust(at the depth of about20-30km at 220Ma).and at the rate of 1-2km/Ma to the middle crust(at the depth of about 15km at 213Ma0.and then at the rate of less than l km/Ma to the upper crust about 10 km deep at about 204Ma. | LI Jinyi, YANG Tiannan, CHEN Wen and ZHANG Sihong Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037E-mail: jyli@cags.net.cn | 2003 | Acta Geologica Sinica(English Edition)2003，77，2： | 17 |
| 4 | Hypoplastic constitutive modelling of the wetting induced creep of rockfill materials显示文摘Discrete element simulations of one-dimensional compression of breakable granular assemblies were performed to investigate the capability of the exponential compression equation suggested by Bauer.The relationship between the so-called solid hardness and the particle strength was studied so as to provide a physical background for the introduction of a time-dependent solid hardness.A hyperbolic flow rule,describing the relationship between the inclination of the strain path and the stress ratio during wetting,was proposed based on typical triaxial wetting experiments on two different rockfill materials.The flow rule was then extended and incorporated into the transformed stress based hypoplastic model to capture the direction of creep strains.Meanwhile,a new density factor was introduced to the extended model to take into account the dependence of the magnitude of creep strains on the packing density.The stiffness tensor given by the extended model was discussed and the flowchart for the integration of the constitutive equation was designed.The extended model was then embedded into a finite element program and used to simulate the triaxial compression and wetting experiments performed on the aforementioned rockfill materials.Good agreement between the model predictions and the measured results lends sufficient credibility to the extended model in reproducing the stress-stain behaviour under loading and the creep behaviour during wetting.The extended model and the finite element program were also used to investigate the deformation behaviour of an earth-rock dam at the end of construction and during first impounding.The familiar phenomena such as the wetting induced settlement of the upstream shell and the movement of the dam crest towards the upstream were successfully captured by the numerical model,which confirms the feasibility of applying the extended model to dam engineering in the future. | FU ZhongZhi CHEN ShengShui LIU SiHong | 2012 | Science China(Technological Sciences)2012，55，7： | 6 |
| 5 | Dipole-moment-induced effect on contact electrification for triboelectric nanogenerators显示文摘 | Peng Bai Guang Zhu Yu Sheng Zhou Sihong Wang Jusheng Ma Gong Zhang Zhong Lin Wang | 2014 | Nano Research2014，7，7： | 6 |
| 6 | The First Global Carbon Dioxide Flux Map Derived from TanSat Measurements显示文摘Space-borne measurements of atmospheric greenhouse gas concentrations provide global observation constraints for top-down estimates of surface carbon flux.Here,the first estimates of the global distribution of carbon surface fluxes inferred from dry-air CO_2 column (XCO_2) measurements by the Chinese Global Carbon Dioxide Monitoring Scientific Experimental Satellite (Tan Sat) are presented.An ensemble transform Kalman filter (ETKF) data assimilation system coupled with the GEOS-Chem global chemistry transport model is used to optimally fit model simulations with the Tan Sat XCO_2 observations,which were retrieved using the Institute of Atmospheric Physics Carbon dioxide retrieval Algorithm for Satellite remote sensing (IAPCAS).High posterior error reduction (30%–50%) compared with a priori fluxes indicates that assimilating satellite XCO_2 measurements provides highly effective constraints on global carbon flux estimation.Their impacts are also highlighted by significant spatiotemporal shifts in flux patterns over regions critical to the global carbon budget,such as tropical South America and China.An integrated global land carbon net flux of 6.71±0.76 Gt C yr^(-1) over12 months (May 2017–April 2018) is estimated from the Tan Sat XCO_2 data,which is generally consistent with other inversions based on satellite data,such as the JAXA GOSAT and NASA OCO-2 XCO_2 retrievals.However,discrepancies were found in some regional flux estimates,particularly over the Southern Hemisphere,where there may still be uncorrected bias between satellite measurements due to the lack of independent reference observations.The results of this study provide the groundwork for further studies using current or future Tan Sat XCO_2 data together with other surfacebased and space-borne measurements to quantify biosphere–atmosphere carbon exchange. | Dongxu YANG Yi LIU Liang FENG Jing WANG Lu YAO Zhaonan CAI Sihong ZHU Naimeng LU Daren LYU | 2021 | Advances in Atmospheric Sciences2021，38，9： | 5 |
| 7 | Hypoplastic constitutive modeling of wetting deformation of weathered rockfill materials显示文摘The wetting deformation of weathered rockfill materials has been attracting growing attention from both engineers and scientists.The importance of realistic predictions of wetting deformations for high earth and rockfill dams is a strong motivation to establish a suitable constitutive model.Recently,the hypoplastic constitutive model by Gudehus and Bauer was extended by introducing solid hardness depending on the state of weathering.The extended model takes into account the influence of the current density,the effective stress state,the rate of deformation,and the time dependent process of degradation of the solid hardness.In the present paper,the performance of this model is evaluated by comparing numerical simulations with experiments obtained from a water sensitive rockfill material.In particular,triaxial compression paths and creep deformation under deviatoric stress states are considered.Finally,the constitutive model proposed is used to study the influence of a degradation of the solid hardness on the long term behavior of a hypothetical fill dam. | Erich BAUER Zhongzhi FU Sihong LIU | 2010 | Frontiers of Structural and Civil Engineering2010，4，1： | 5 |
| 8 | Mantle Branch Structure in the South-Central Segment of the Da Hinggan Mts.,Inner Mongolia and Its Ore-controlling Role显示文摘Mantle branch structure is the third tectonic unit of multiple evolution of a mantle branch. It is not only the main mechanism of intercontinental orogeny, but also an important ore-forming and ore-control structure. Studies on geotectonic evolution, regional geological characteristics and ore-forming and ore-control structures have shown that since the Mesozoic the Da Hinggan Mts. region has entered a typical intercontinental orogenic stage, and it is closely related to mantle branch activities. The south-central segment of the Da Hinggan Mts. is a typical mantle branch structure and possesses obvious magmatic-metamorphic complexes in the core, detachment slip beds in the periphery and overlapped fault depression basins. Moreover, all of these are the principal factors leading to ore formation and ore control in the region. This paper also further explores the mechanism of mineralization in the south-central segment of the Da Hinggan, summaries the rules of mineralization, puts forward the models of mineralization and points out future ore-exploring orientation. | NIU Shuyin SUN Aiqun WANG Baode NIE Fengjun JIANG Sihong SHAO Ji'an GUO Lijun LIU Jianming | 2009 | Acta Geologica Sinica(English Edition)2009，83，6： | 4 |
| 9 | Dependence of the sediment delivery ratio on scale and its fractal characteristics显示文摘沉积交货比率(SDR ) 是过去常为要送到特别的盆的插头的侵蚀的沉积决定能力的指示物。在最后 50 年期间在中国和国外基于 SDR 研究的系统的评论,这研究分析 SDR 是否有规模依赖者特征并且讨论 SDR 的分数维的特征。另外,在在中国和国外的各种各样的分水岭的 SDR 与时间、空间的规模显示出关联,它意味着 SDR 取决于分水岭规模。而且, SDR 能是在某些时间、空间的规模下面用分数维的尺寸表示并且可伸缩的份量上。在一个嵌套的分水岭以内,一个建议 SDR 规模转移模型与约 1 的一个区域在典型分水岭单位规模用 SDR 被构造; km 2(SDR′) 和在一个嵌套的分水岭的 SDR 的一种分数维的尺寸放大(D) 。这研究也指出没有认为它的规模是依赖, SDR 的学习和计算不能是正确的。构造由使用分数维的尺寸放大模型的 SDR 是一条有效、有用的途径,它能是关于以后可伸缩的 SDR 的一个有趣的研究话题。 | Xiaoming Zhang Sihong Wu Wenhong Cao Jianchao Guan Zhaoyan Wang | 2015 | International Journal of Sediment Research2015，30，4： | 4 |
| 10 | Influence of pressure and density on the rheological properties of rockfills显示文摘Long-term deformations of rockfill dams can be related to the type of dam,the pre-compaction achieved during the construction of the dam,the history of loading events,the rheological properties of the rockfill material used,the seepage behavior caused by defects of the sealing,the interactions of the dam building with the foundation,and the hydrothermal phenomena of the stressed rockfill material.The present paper investigates the theological propcrtics of coarse grained rockfill materials using a hypoplastic constitutive model.Particular attention is paid to wetting deformation under different deviatoric loading states and pre-compactions.To quantify the state of weathering a so-called“solid hardness”is used in the sense of a continuum description.It is shown that an appropriate modeling of wetting deformations requires a unified description of the interaction at least between the state of weathering,the stress state,the density and the rate of deformation.The results obtained from the numerical simulations are compared with available experimental data for a rockfill material used in Xiaolangdi earth dam. | Erich BAUER Zhongzhi FU Sihong LIU | 2012 | Frontiers of Structural and Civil Engineering2012，6，1： | 4 |
| 11 | The impact of sample processing on the rapid antigen detection test for SARS-CoV-2: Virus inactivation, VTM selection, and sample preservation显示文摘Many factors have been identified as having the ability to affect the sensitivity of rapid antigen detection(RAD)tests for severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).This study aimed to identify the impact of sample processing on the sensitivity of the RAD tests.We explored the effect of different inactivation methods,viral transport media(VTM)solutions,and sample preservation on the sensitivity of four RAD kits based on two SARS-CoV-2 strains.Compared with non-inactivation,heat inactivation significantly impacted the sensitivity of most RAD kits;however,β-propiolactone inactivation only had a minor effect.Some of the VTM solutions(VTM2,MANTACC)had a significant influence on the sensitivity of the RAD kits,especially for low viral-loads samples.The detection value of RAD kits was slightly decreased,while most of them were still in the detection range with the extension of preservation time and the increase of freeze–thaw cycles.Our results showed that selecting the appropriate inactivation methods and VTM solutions is necessary during reagent development,performance evaluation,and clinical application。 | Haiwei Zhou Conghui Wang Jian Rao Lan Chen Tingting Ma Donglai Liu Lili Ren Sihong Xu | 2021 | Biosafety and Health2021，3，5： | 3 |
| 12 | Geochemistry and Sr-Nd-Pb Isotopes of the Granites from the Hashitu Mo Deposit of Inner Mongolia, China: Constraints on Their Origin and Tectonic Setting显示文摘The Hashitu molybdenum deposit is located in the southern part of the Great Hinggan Range,NE China.Molybdenum mineralization is hosted by and genetically associated with monzogranite and porphyritic syenogranite.Sr-Nd-Pb isotopes of the intrusions show that the porphyritic syenogranite has initial^(87)Sr/^(86)Sr ratios of 0.70418-0.70952,ε_(Nd)(t)values of 1.3 to 2.1(t=143Ma),^(206)Pb/^(204)Pb ratios of 19.191-19.573,^(207)Pb/^(204)Pb ratios of 15.551-15.572,and^(208)Pb/^(204)Pb ratios of38.826-39.143.The monzogranite has initial^(87)Sr/^(86)Sr ratios of 0.70293-0.71305,ε_(Nd)(t)values of 1.1 to2.0(t=147 Ma),^(206)Pb/^(204)Pb ratios of 19.507-20.075,^(207)Pb/^(204)Pb ratios of 15.564-15.596,and^(208)Pb/^(204)Pb ratios of 39.012-39.599.The calculated Nd model ages(T_(DM))for monzogranite and porphyritic syenogranite range from 866 to 1121 Ma and 795 to 1020 Ma,respectively.The granitic rocks in the Hashitu area have the same isotope range as granites in the southern parts of the Great Hinggan Range.The isotope composition indicates that these granites are derived from the partial melting of a juvenile lower crust originating from a depleted mantle with minor contamination by ancient continental crust.The integrating our results with published data and the Late Mesozoic regional tectonic setting of the region suggest that the granites in the Hashitu area formed in an intra-continent extensional setting,and they are related to the thinning of the thickened lithosphere and upwelling of the asthenosphere. | DING Chengwu DAI Pan BAGAS Leon NIE Fengjun JIANG Sihong WEI Junhao DING Chengzhen ZUO Pengfei ZHANG Ke | 2016 | Acta Geologica Sinica(English Edition)2016，90，1： | 3 |
| 13 | Microscopic study on stress-strain relation of granular materials显示文摘A biaxial shearing test on granular materials is numerically simulated by distinct element method (DEM). The evolution of the microstructures of granular materials during isotropic compression and shearing is investigated, on which a yield function is derived. The new yield function has a similar form as the one used in the modified Cam-clay model and explains the yield characteristics of granular materials under the isotropic compression and shear process through the change of the contact distribution N(θ) defining the contacts at particle contact angle θ. | LIU SiHong YAO YangPing SUN QiCheng LI TieJun LIU MinZhi | 2009 | Chinese Science Bulletin2009，54，23： | 2 |
| 14 | Discrete element simulations of two wetting effects on granular materials显示文摘To explore the microscopic responses of granular materials to wetting,the inter-particle lubrication effect and particle breakage in an odometer were simulated using a two-dimensional discrete element method.The lubrication effect was modeled by reduction of the inter-particle friction coefficient and particle breakage was initiated by decreasing the particle strength.Once the strength of the particles decreased to a threshold value,the particles began to break so that new contacts could be established to transfer the external loads.Numerical simulations successfully reproduced the additional compaction of the material and the intensification of the horizontal stress in addition to the microscopic responses of the granular assemblies.The microscopic interpretation of the earth pressure coefficient at rest and the evolution of the grain number distribution during particle breaking were also investigated. | FU ZhongZhi LIU SiHong LI Zhuo | 2011 | Chinese Science Bulletin2011，56，35： | 2 |
| 15 | Flexible bioelectronics for physiological signals sensing and disease treatment显示文摘Flexible bioelectronics,including wearable and implantable electronics,have revolutionized the way of human-machine interaction due to the fact that they can provide natural and seamless interactions with humans and keep stable and durable at strained states.As sensor elements or biomimetic actuators,flexible bioelectronics can dynamically sense and monitor physiological signals,reveal real-time physical health information and provide timely precise stimulations or treatments.Thus,the flexible bioelectronics are playing increasingly important roles in human-health monitoring and disease treatment,which will significantly change the future of healthcare as well as our relationships with electronics.This review summarizes recent major progress in the development of flexible substrates or encapsulation materials,sensors,circuits and energy-autonomous powers toward digital healthcare monitoring,emphasizing its role in biomedical applications in vivo and problems in practical applications.A future perspective into the challenges and opportunities in emerging flexible bioelectronics designs for the next-generation healthcare monitoring systems is also presented. | Guang Yao Chenhui Yin Qian Wang Tianyao Zhang Sihong Chen Chang Lu Kangning Zhao Weina Xu Taisong Pan Min Gao Yuan Lin | 2020 | Journal of Materiomics2020，6，2： | 2 |
| 16 | Cracking in an expansive soil under freeze–thaw cycles显示文摘Expansive soils located in cold regions can easily endure the action of frost heaving and cyclic freezing–thawing. Cracking can also occur in expansive clayey soils under freeze–thaw cycles, of which little attention has been paid on this issue.In this study, laboratory experiment and cracking analysis were performed on an expansive soil. Crack patterns were quantitatively analyzed using the fractal concept. The relationships among crack pattern, water loss, number of freeze–thaw cycles, and fractal dimension were discussed. It was found that crack patterns on the surface exhibit a hierarchical network structure that is fractal at a statistical level. Cracks induced by freeze–thaw cycles are shorter, more irregularly oriented,and slowly evolves from an irregularly rectilinear pattern towards a polygonal or quasi–hexagonal one; water loss, closely related to specimen thickness, plays a significant role in the process of soil cracking; crack development under freeze-thaw cycles are not only attributed to capillary effect, but also to expansion and absorption effects. | Yang Lu SiHong Liu | 2017 | Research in Cold and Arid Regions2017，9，4： | 2 |
| 17 | THE 1-LAPLACIAN CHEEGER CUT: THEORY AND ALGORITHMS显示文摘这份报纸基于图 1 拉普拉斯算符为 Cheeger 切割论述理论和算法的详细评论。在可行集合的房间结构的优点,我们建议一个房间下降(CD ) 为完成 Cheeger 的框架切了。当插松驰在可行集合保证客观价值的减少时,从哪个反的力量(IP ) 方法和最陡峭的降下(SD ) 方法能也被恢复,我们能得到二个指定 CD 方法。所有这些方法的比较在几张典型的图上被进行。[从作者抽象] | K.C. Chang Sihong Shao Dong Zhang | 2015 | Journal of Computational Mathematics2015，33，5： | 2 |
| 18 | Adaptive Conservative Cell Average Spectral Element Methods for Transient Wigner Equation in Quantum Transport显示文摘A new adaptive cell average spectral element method(SEM)is proposed to solve the time-dependent Wigner equation for transport in quantum devices.The proposed cell average SEM allows adaptive non-uniform meshes in phase spaces to reduce the high-dimensional computational cost of Wigner functions while preserving exactly the mass conservation for the numerical solutions.The key feature of the proposed method is an analytical relation between the cell averages of the Wigner function in the k-space(local electron density for finite range velocity)and the point values of the distribution,resulting in fast transforms between the local electron density and local fluxes of the discretized Wigner equation via the fast sine and cosine transforms.Numerical results with the proposed method are provided to demonstrate its high accuracy,conservation,convergence and a reduction of the cost using adaptive meshes. | Sihong Shao Tiao Lu Wei Cai | 2011 | Communications in Computational Physics2011，9，3： | 2 |
| 19 | Experimental study on laminar convective heat transfer of microencapsulated phase change material slurry using liquid metal with low melting point as carrying fluid显示文摘 | Sihong Song Weidong Shen | 2014 | International Journal of Heat and Mass Transfer2014，73，： | 1 |
| 20 | Flexible ultra-wideband rectangle monopole antenna with O-slot insertion design显示文摘Slot insertion design has proven to be an effective method to increase the bandwidth in the design of microstrip antenna. In this paper, the slot insertion design is applied to the flexible ultra-wideband(UWB)antenna. A flexible rectangular UWB monopole antenna is proposed and fabricated with O-slot design using the transfer printing method. By simulating the influence of O-slot design parameters on electromagnetic performance of the antenna, an optimized antenna design is obtained to keep the reflection coefficient under-10 d B with the frequencies ranging from 3.5 to 17.8 GHz when the antenna is bent with curvature radius as small as 11 mm. The effect of bending on the reflection coefficient is analyzed. Mechanical simulations indicate that the existence of O-slot can reduce the strain concentration on the metal layer of antenna, which enhances the flexibility of the antenna. | Sihong CHEN Taisong PAN Zhuocheng YAN Min GAO Yuan LIN | 2018 | Science China(Information Sciences)2018，61，6： | 1 |
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