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| 1 | Uplift of the Longmen Shan range and the Wenchuan earthquake显示文摘 | Zhiqin Xu Shaocheng Ji Haibing Li Liwei Hou Xiaofang Fu Zhihui Cai | 2008 | Episodes2008，31，3： | 106 |
| 2 | Effects of porosity on seismic velocities, elastic moduli and Poisson's ratios of solid materials and rocks显示文摘The generalized mixture rule(GMR) is used to provide a unified framework for describing Young's(E),shear(G) and bulk(K) moduli, Lame parameter(l), and P- and S-wave velocities(V_p and V_s) as a function of porosity in various isotropic materials such as metals, ceramics and rocks. The characteristic J values of the GMR for E, G, K and l of each material are systematically different and display consistent correlations with the Poisson's ratio of the nonporous material(v_0). For the materials dominated by corner-shaped pores, the fixed point at which the effective Poisson's ratio(n) remains constant is at v_0=0.2, and J(G) > J(E) > J(K) > J(l) and J(G) < J(E) < J(K) < J(l) for materials with v_0> 0.2 and v_0< 0.2, respectively.J(V_s) > J(V_p) and J(V_s) < J(V_p) for the materials with v_0 > 0.2 and v_0< 0.2, respectively. The effective n increases, decreases and remains unchanged with increasing porosity for the materials with v_0 < 0.2,v_0 > 0.2 and v_0 =0.2, respectively. For natural rocks containing thin-disk-shaped pores parallel to mineral cleavages, grain boundaries and foliation, however, the n fixed point decreases nonlinearly with decreasing pore aspect ratio(a: width/length). With increasing depth or pressure, cracks with smaller a values are progressively closed, making the n fixed point rise and finally reach to the point at v_0=0.2. | Chengbo Yu Shaocheng Ji Qi Li | 2016 | Journal of Rock Mechanics and Geotechnical Engineering2016，8，1： | 15 |
| 3 | Diagnosis and therapy of primary undifferentiated embryonal sarcoma of the liver显示文摘Primary undifferentiated embryonal sarcoma (UES)of the liver,also called malignant mesenchymoma of the liver,is a rare hepatic malignancy.It arises from the mesoderm and comprises more than two types of sarcomas.UES can occur at any site of the body;common sites include the retroperitoneum and the lower extremities.Only a few cases of UES have been reported worldwide.1 In this study,we retrospectively examined the clinical data of 11 patients with UES between January 2000 and November 2011 at the People's Liberation Army General Hospital. | Lyu Shaocheng Shi Xianjie Liang Yurong Gu Wanqing Ji Wenbin Luo Ying Lu Fang Xu Mingyue | 2014 | Chinese Medical Journal2014，，8： | 7 |
| 4 | Preparation and evaluation of a new releasable PEGylated tumor necrosis factor-α(TNF-α) conjugate for therapeutic application显示文摘To design a releasable PEGylated TNF-α(rPEG-TNF-α ), a cathepsin B-sensitive dipeptide (Val-Cit moiety) was inserted into conventional PEG-modified TNF- (PEG-TNF- ), facilitating its clinical use for anti-tumor therapy. Comparative pharmaco- kinetic and pharmacodynamic studies showed that the half-lives of both PEGylated forms of TNF-α were ~60-fold greater than that of unmodified TNF-α . In addition, the in vitro bioactivity of rPEG-TNF-α was greater than that of PEG-TNF-α with the same degree of PEG modification. Release of TNF-α from rPEG-TNF-α in vitro was dependent on the presence of cathepsin B and was inhibited by a cathepsin B inhibitor. Despite the potent cytotoxicity of unmodified TNF-α against normal cells, its PEGylated forms at higher TNF-α concentrations showed low cytotoxic activity against these cells. In contrast, both forms of PEGylated TNF-α showed potent cytotoxic activity against the B16 and L929 cell lines, with rPEG-TNF-α being 5- and 9- fold more potent, respectively, than PEG-TNF-α . Moreover, rPEG-TNF-α was a more potent in vivo antitumor agent than PEG-TNF-α . | DAI ChuanYun FU Ya CHEN ShaoCheng LI Biao YAO Bo LIU WanHong ZHU LiQing CHEN Nan CHEN Ji ZHANG Qiang | 2013 | Science China(Life Sciences)2013，56，1： | 4 |
| 5 | On deposits controlled by tectonic lenses显示文摘By study of the typical tectonic lenses controlling some ore deposits, the tectonic lens boundaries may be classified into fuzzy boundaries, sharp boundaries and complex boundaries, and the metallostructures in tectonic lenses may be classified into vein-type, stock- work-type and breccia-type. After studying their metallostructures, we suggest the conception on tectonic lenses as an ore-forming system, realizing that the compact-function ore-forming system is made up of the lenticular weak-strain domain(Q) and its outside linear strong-strain belt(P). The ore-forming system, which is composed of four subsystems that coupled with each other and exert their system functions to the full, includes the dual-dynamical system made up of tectonic and fluid dynamics, the metallotectonic system controlled by hydrofracturing, the ore-source system made up of multi-substances and the mineral transportation system contacted by tectonic network. Deformational partitioning, hydrofracturing and tectonic pumping operate the consid- erable function while the system function practises. Finally, the significance of metallotectonics on the tectonic lenses is discussed in the paper. | WANG Jincao 1 ,XIA Bin 1 & JI Shaocheng 2 1.Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China 2.Department of Civil,Geological and Mining Engineering,Montreal Institute of Technology,P.O.Box6079,Station Centre-ville Montreal,Canada | 2004 | Science China Earth Sciences2004，47，12： | 3 |
| 6 | V_p/V_s Anisotropy and Implications for Crustal Composition Identification and Earthquake Prediction显示文摘The ratio of P- to S-wave velocities(V_p/V_s) is regarded as one of the most diagnostic properties of natural rocks.It has been used as a discriminant of composition for the continental crust and provides valuable constraints on its formation and evolution processes.Furthermore,the spatial and temporal changes in V_p/V_s before and after earthquakes are probably the most promising avenue to understanding the source mechanics and possibly predicting earthquakes.Here we calibrate the variations in V_p/V_s in dry,anisotropic crustal rocks and provide a set of basic information for the interpretation of future seismic data from the Wenchuan earthquake Fault zone Scientific Drilling (WFSD) project and other surveys.V_p/V_s is a constant(Φ_0) for an isotropic rock.However,most of crustal rocks are anisotropic due to lattice-preferred orientations of anisotropic minerals(e.g.,mica, amphibole,plagioclase and pyroxene) and cracks as well as thin compositional layering.The V_p/V_s ratio of an anisotropic rock measured along a selected pair of propagation-vibration directions is an apparent value(Φ_(ij)) that is significantly different from the value for its isotropic counterpart(Φ_0).The usefulness of apparent V_p/V_s ratios as a diagnostic of crustal composition depends largely on rock seismic anisotropy.A 5%of P- and S-wave velocity anisotropy is sufficient to make it impossible to determine the crustal composition using the conventional criteria(V_p/V_s≤1.756 for felsic rocks, 1.7561.944 fluidfilled porous/fractured or partially molten rocks) if the information about the wave propagationpolarization directions with respect to the tectonic framework is unknown.However,the variations in V_p/V_s measured from borehole seismic experiments can be readily interpreted according to the orientations of the ray path and the polarization of the shear waves with respect to the present-day principal stress directions(i.e.,the orientation of cracks) and the frozen fabric(i.e.,foliation and lineation). | WANG Qian JI Shaocheng XU Zhiqin | 2009 | Acta Geologica Sinica(English Edition)2009，83，4： | 3 |
| 7 | Zircon U–Pb geochronology of gneissic rocks in the Yunkai massif and its implications on the Caledonian event in the South China Block显示文摘 | Yuejun Wang Weiming Fan Guochun Zhao Shaocheng Ji Touping Peng | 2006 | Gondwana Research2006，，4： | 1 |
| 8 | A new interpretation for formation of orthogonal joints in quartz sandstone显示文摘Two vertical and orthogonal systematic joint sets are generally arrayed in a grid pattern on the bedding surface,which are the significant features of flat-lying sandstone terrains.Although extensive researches are reported on this topic,many fundamental problems have still not been solved.Such mutually perpendicular opening-mode fractures are an obvious manifestation of effective tensile stresses in two orthogonal directions in the horizontal bedding plane.A good understanding of these orthogonal joint systems is a key to structural analysis,landscape interpretation,and guidance of resolving a number of very practical problems in engineering,mining and hydrologic projects.Based on an anatomic investigation on the orthogonal joints in the Potsdam sandstone of Cambrian age at Ausable Chasm(New York State,USA)and Beauharnois(Quebec,Canada),we proposed that the orthogonal joints may result from the auxetic effects of quartz-rich sandstone rather than local or regional rotation of the maximum tensile stress(σ_(3))direction by about 90°.The sandstone beds with negative Poisson's ratios are so fascinating that,when placed under vertical burial compression and layer-parallel extension in one direction(σ_(3)),it becomes stretched in the transverse direction(σ_(2)),producing two orthogonal sets of mutual abutting and intersecting joints(J1 and J2 normal toσ_(3) andσ_(2),respectively),and both are normal to the bedding surface.Joint set J1 is more closely-spaced than J2 by a factor of∼3.3,which is correlated with an average Poisson's ratio of−0.3 for the Potsdam sandstone at the time of joint formation. | Le Li Shaocheng Ji | 2021 | Journal of Rock Mechanics and Geotechnical Engineering2021，13，2： | 1 |
| 9 | Zircon U–Pb geochronology of gneissic rocks in the Yunkai massif and its implications on the Caledonian event in the South China Block显示文摘 | Yuejun Wang Weiming Fan Guochun Zhao Shaocheng Ji Touping Peng | 2006 | Gondwana Research2006，，4： | 1 |
| 10 | The Ailao Shan/Red River metamorphic belt: Tertiary left-lateral shear between Indochina and South China显示文摘 | Tapponnier P Lacassin R Leloup P H Sch~irer U Zhong Dalai Wu Haiwei Liu Xiaohan Ji Shaocheng Zhang Lianshang Zhong Jiayou | 1990 | Nature1990，343，6257： | 1 |
| 11 | The relationship between diameter and depth of potholes eroded by running water显示文摘Geometrical analyses of 3930 potholes(3565 fluvial potholes, 237 marine potholes and 128 hillside potholes) from 33 localities in the world reveal a consistent, linear relationship: D= Nh t M, where h and D are, respectively, the depth and mean diameter of pothole, M is a critical size of the initial concavities(seminal potholes) that subsequently underwent growth, and N is the ratio of diameter expanding(wall erosion) speed to deepening(floor abrasion) speed. For the stream potholes, N is generally less than 1 with an average value of 0.67, M varies from 5.3 cm to 40.5 cm with an average of 20 cm, and N decreases gently with increasing M. However, the marine and hillside potholes are generally characterized by N > 1 and M < 10 -14 cm, and a power-law relationship N=4.24 M^(-0.78)(coefficient of determination R^2=0.75,M is in cm) exists. The results indicate that depth increases faster than diameter for stream potholes due to the larger size of grinding stones(>5-10 cm), while depth increases slower than diameter for marine potholes and hillside potholes due to the smaller size of grinding stones(<5 -10 cm). The pothole h-D relationship is nearly independent of rock type. Knowledge of the pothole depthediameter relationship is useful in a number of contexts, including simulation of hydraulic dynamics, theoretical considerations of erosion, comprehension of channel incision and development of canyons and gorges, and accurate estimation of excavation volume and mechanical strength of potholed bedrock in the design and stability analysis of hydraulic and environmental engineering projects(e.g. dam construction and river dredging). | Shaocheng Ji Le Li Wei Zeng | 2018 | Journal of Rock Mechanics and Geotechnical Engineering2018，10，5： | 1 |
| 12 | Elastic and Seismic Properties of Dabie-Sulu Ultrahigh Pressure Metamorphic Rocks显示文摘Lamé modulus(λ) and shear modulus(μ) are among the most important,intrinsic,elastic constants of rocks.Using λ and μ could be much more advantageous than using P-and S-wave velocities(Vp and Vs).Here we quantified these equivalent isotropic elastic moduli for 115 representative rocks from the ultrahigh pressure(UHP) metamorphic terrane of the Dabie-Sulu orogenic belt(China) and their variations with pressure(P),temperature(T),density(ρ),Vp,Vs and mineralogical composition.Both moduli increase nonlinearly and linearly with increasing pressure at low(<200-300 MPa) and high(>200-300 MPa) pressures,respectively.In the regime of high pressures,λ and μ decrease quasi-linearly with increasing temperature with temperature derivatives dλ/dT and dμ/dT generally in the range of -10×10-3 to -1×10-3 GPa/oC.Dehydration of water-bearing minerals such as serpentine in peridotites and chlorite in retrograde eclogites results in an abrupt drop in λ while μ remains almost unchanged.In λ-ρ,μ-ρ and λ-μ plots,the main categories of UHP rocks can be characterized.Serpentinization leads to significant decreases in μ and λ as serpentine has extremely low values of λ,μ and ρ.Eclogites,common mafic rocks(mafic gneiss,metagabbro and amphibolite),and felsic rocks(orthogneiss and paragneiss) have high,moderate and low μ and λ values,respectively.For pyroxenes and olivines,λ increases but μ decreases with increasing Fe/Mg ratios.For plagioclase feldspars,both λ and μ exhibit a significant positive correlation with anorthite content.SiO2-rich felsic rocks and quartzites are deviated remarkably from the general trend lines of the acid-intermediate-mafic rocks in Vs-ρ,μ-ρ,λ-Vp,λ-Vs and μ-λ diagrams because quartz has extremely low λ(~8.1 GPa) and ρ(2.65 g/cm3) but moderate μ(44.4 GPa) values.Increasing the contents of garnet,rutile,ilmenite and magnetite results in a significant increase in the λ and μ values of the UHP metamorphic rocks.However,either λ or μ is insensitive to the compositional variations for pyralspite(pyrope-almandine-spessartine) solution series.The results provide potentially improved constraints on characterization of crustal composition based on the elastic properties of rocks and in situ seismic data from deep continental roots. | WANG Qian JI Shaocheng SUN Shengsi Matthew H.SALISBURY Hartmut KERN | 2012 | Acta Geologica Sinica(English Edition)2012，86，1： | 1 |
| 13 | Discrete element modeling of acoustic emission in rock fracture显示文摘The acoustic emission (AE) features in rock fracture are simulated numerically with discrete element model (DEM). The specimen is constructed by using spherical particles bonded via the parallel bond model. As a result of the heterogeneity in rock specimen, the failure criterion of bonded particle is coupled by the shear and tensile strengths, which follow a normal probability distribution. The Kaiser effect is simulated in the fracture process, for a cubic rock specimen under uniaxial compression with a constant rate. The AE number is estimated with breakages of bonded particles using a pair of parameters, in the temporal and spatial scale, respectively. It is found that the AE numbers and the elastic energy release curves coincide. The range for the Kaiser effect from the AE number and the elastic energy release are the same. Furthermore, the frequency-magnitude relation of the AE number shows that the value of B determined with DEM is consistent with the experimental data. | Shunying Ji Shaocheng Di | 2013 | Theoretical & Applied Mechanics Letters2013，3，2： | 1 |
| 14 | Refinements of shear-lag model and its applications 显示文摘 | Pinglao Zhao Shaocheng Ji | 1997 | Tectonophysics1997，，279： | 1 |
| 15 | Composition and tectonic evolution of the Chinese continental crust constrained by Poisson's ratio显示文摘 | JI SHAOCHENG WANG QIAN SALISBURY M H | 2009 | Tectonophysics2009，463，14： | 1 |
| 16 | Sence of shear in high-temperature movement zones from the fabric asymmetry of plagioclase feldspars显示文摘 | Ji Shaocheng David Mainprice Francoise Boudier | 1988 | Journal of Structural Geology1988，10，1： | 1 |
| 17 | Strain softening and quartz-anorthite layered composites deformed in torsion 显示文摘 | Ji Shaocheng Jiang Zhenting Erik Rybacki | 2004 | Earth and Planetary Science Letters2004，222，： | 1 |
| 18 | Correlations between compressional and shear wave velocities and corresponding Poisson’s ratios for some common rocks and sulfide ores显示文摘 | Qian Wang Shaocheng Ji Shengsi Sun Denis Marcotte | 2009 | Tectonophysics2009，，1： | 1 |
| 19 | Pseudotachylyte-Induced Weakness of Plate-Boundary Fault:Insight from the Indus-Tsangpo Suture between India and Asia显示文摘Although the Indus-Tsangpo Suture(ITS) is the most spectacular thrust system of continent-continent collision in the world, fundamental questions about its strength evolution and deformation behavior transition remain unanswered. Here we reported, for the first time, frictional melting-induced pseudotachylytes in the intensively deformed felsic rocks along the ITS zone in southern Tibet. This study reveals that pseudotachylytes induced profound weakness of the boundary fault between Indian and Asian plates. The intrinsically low strength of the foliated microlites crystallized from frictional melt or glass(i.e., pseudotachylyte) at seismogenic depths compared with the surrounding coarse-grained quartzofeldspathic rocks in the brittle and semi-brittle regime is sufficient to explain the localization of shear strain, the development of ductile shear zones embedded in strong wall rocks, and the transition from the strong to weak fault behaviors without invoking the presence of high fluid pressure or low friction coefficient metasomatic materials(e.g., smectite or lizardite) within the faults. | XU Zhiqin JI Shaocheng ZHOU Xin | 2019 | Acta Geologica Sinica(English Edition)2019，93，1： | 0 |
| 20 | Relationship between fracture spacing and bed thickness in sedimentary rocks:Approach by means of Michaelis-Menten equation显示文摘Fractures occur in nearly all rocks at the Earth’s surface and exert essential control on the mechanical strengths of rock masses and permeability.The fractures strongly impact the stability of geological or man-made structures and flow of water and hydrocarbons,CO_(2) and storing waste.For this,the dependence of opening mode fracture spacing(s)on bed thickness(t)in sedimentary basins(reservoirs)is studied in this context.This paper shows that the MichaeliseMenten equation can provide an algebraic expression for the nonlinear s-t relationship.The two parameters have clear geological meanings:a is the maximum fracture spacing which can no longer increase with increasing t,and b is the characteristic bed thickness when s=0.5a.The tensile fracture strength(C)of the brittle beds during the formation of tensile fractures can be estimated from the two parameters.For sandstones of 16 areas reported in the literature,C ranges from 2.7 MPa to 15.7 MPa with a mean value of 8 MPa,which lies reasonably within the range of tensile strengths determined experimentally.This field-based approach by means of MichaeliseMenten equation provides a new method for estimating the tensile fracture strength of rock layers under natural conditions. | Shaocheng Ji | 2023 | Journal of Rock Mechanics and Geotechnical Engineering2023，15，8： | 0 |
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