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| 1 | Diagenetic fluid evolution and water-rock interaction model of carbonate cements in sandstone: An example from the reservoir sandstone of the Fourth Member of the Xujiahe Formation of the Xiaoquan-Fenggu area, Sichuan Province, China显示文摘Carbonate cement is the most abundant cement type in the Fourth Member of the Xujiahe Formation in the Xiaoquan-Fenggu area of the West Sichuan Depression. Here we use a systematic analysis of carbonate cement petrology, mineralogy, carbon and oxygen isotope ratios and enclosure homogenization temperatures to study the precipitation mechanism, pore fluid evolution, and distribution of different types of carbonate cement in reservoir sand in the study area. Crystalline calcite has relatively heavy carbon and oxygen isotope ratios(δ13C = 2.14‰, δ18O = -5.77‰), and was precipitated early. It was precipitated directly from supersaturated alkaline fluid under normal temperature and pressure conditions. At the time of precipitation, the fluid oxygen isotope ratio was very light, mainly showing the characteristics of a mixed meteoric water-seawater fluid(δ18O = -3‰), which shows that the fluid during precipitation was influenced by both meteoric water and seawater. The calcite cement that fills in the secondary pores has relatively lighter carbon and oxygen isotope ratios(δ13C = -2.36‰, δ18O = -15.68‰). This cement was precipitated late, mainly during the Middle and Late Jurassic. An important material source for this carbonate cement was the feldspar corrosion process that involved organic matter. The Ca2+, Fe3+ and Mg2+ ions released by the clay mineral transformation process were also important source materials. Because of water-rock interactions during the burial process, the oxygen isotope ratio of the fluid significantly increased during precipitation, by about 3‰. The dolomite cements in calcarenaceous sandstone that was precipitated during the Middle Jurassic have heavier carbon and oxygen isotope ratios, which are similar to those of carbonate debris in the sandstone(δ13C = 1.93‰, δ18O = -6.11‰), demonstrating that the two are from the same source that had a heavier oxygen isotope ratio(δ18O of about 2.2‰). The differences in fluid oxygen isotope ratios during cement precipitation reflect the influences of different water-rock interaction systems or different water-rock interaction strengths. This is the main reason why the sandstone containing many rigid particles(lithic quartz sandstone) has a relatively negative carbon isotope ratio and why the precipitation fluid in calcarenaceous sandstone has a relatively heavier oxygen isotope ratio. | LIU SiBing HUANG SiJing SHEN ZhongMin Lü ZhengXiang SONG RongCai | 2014 | Science China Earth Sciences2014，57，5： | 13 |
| 2 | Geochemical characteristics of noble gases in natural gas and their application in tracing natural gas migration in the middle part of the western Sichuan Depression, China显示文摘Noble gases in natural gas, from Xiaoquan, Xinchang, Hexingchang and Fenggu gas reservoirs in the middle part of the western Sichuan Depression, China, were analysed. Results show that the volume content of crustal noble gases accounts for 97.9% to 99.7% of the total noble gas content, indicating that the noble gases in the study area are very largely derived from the crust. Moreover, the 40Ar time-accumulating effect of source rocks is used to determine the complex relationship between gases and source rocks in this area, and the results agree well with that from analysis of source rock light hydrocarbons. Due to the short migration distance, the separation of 4He and 40Ar is not significant in Xujiahe natural gas and Lower and Middle Jurassic natural gas, so it is difficult to trace natural gas migration. However, this separation characteristic of 4He and 40Ar in Middle and Upper Jurassic natural gas is significant, which indicates that natural gas migration was from the Middle Jurassic to Upper Jurassic formations. In addition, the variation trends of 3He/4He ratio and δ13 C1 value indicates that natural gas migration is from the Xujiahe formation to the Jurassic layer in the study area. | Wang Peng Shen Zhongmin Liu Sibing Lv Zhengxiang Zhu Tong Gong Yajun | 2013 | Petroleum Science2013，10，3： | 7 |
| 3 | Carbon isotope composition and comparison of Lower Triassic marine carbonate rocks from Southern Longmenxia section in Guang'an, Sichuan Basin显示文摘The Early Triassic was a period of ecological restoration for the earth's system after the end-Permian mass extinction.Geochemical records linked to the variations in marine ecosystems during this period have attracted the interest of geologists for many years.Based on petrographic analysis of samples and evaluations of their reliability as proxies for original seawater,this study investigated the carbon and oxygen isotopic compositions of 350 carbonate rock samples from the Lower Triassic(and adjacent strata)in the southern Longmenxia section of Guang'an,eastern Sichuan Basin.The results indicate that the Triassic carbonate rocks from the southern Longmenxia section favorably preserved the original seawater'sδ^(13)C signal.Furthermore,carbon and oxygen isotopic compositions are found to be poorly correlated,with a determination coefficient as low as 0.0205 and only 44 rock samples show results of Mn/Sr>2 and/orδ^(18)0<-6.5‰.The complete carbon isotopic curve for the Lower Triassic is established using the data from the remaining 306 samples with Mn/Sr<2 and/orδ^(18)O>-6.5‰.This curve presents favorable comparability on a global scale,specifically in theδ^(13)C minima near the Permian-Triassic boundary,at the top of the Jia1 and within the the Jia3,as well as in theδ^(13)C maxima at the tops of the Ye1 and Ye4,at the base of the Jia2 and at the top of the Ye3.The peaks and troughs corresponding to these maxima and minima all reflect global signals.By comparing these results to previous research on coeval carbon isotopic curves established within the chronostratigraphic framework,the ages of these critical evolution points are determined.The results show that the Ye1 roughly corresponds to the Griesbachian substage;the Ye2 through Ye4 correspond to the Dienerian substage;Jial corresponds to the Smithian substage;from the Jia2 to the lower part of the Jia4 correspond to the Spathian substage;and the middle and upper parts of the Jia4 belongs to the Aegean Substage of the Middle Triassic.Around the boundary between the Jial and Jia2(which represents the Smithian-Spathian boundary(SSB)),the value ofδ^(13)C increases rapidly from-0.911‰to 3.679‰.The span during which the seawater's carbon isotope experiences this drastic change may be less than36 kyr.The oxygen isotope,which is more sensitive to sedimentary environmental changes,exhibits changes prior to the carbon isotope near the SSB,indicating a significant increase in the salinity of the seawater before a sharp rise in the carbon isotope;this event leads to the formation of evaporites and dolomites. | HUANG SiJing HUANG KeKe ZHONG YiJiang LI XiaoNing MAO XiaoDong HU ZuoWei LIU SiBing ZHANG Meng WU WenHui | 2017 | Science China Earth Sciences2017，60，1： | 4 |
| 4 | Orbital control on cyclical organic matter accumulation in Early Silurian Longmaxi Formation shales显示文摘High resolution(939 samples)total organic carbon content(TOC)analyses were conducted on the Shuanghe Section of^152.6 m in the Changning area,Sichuan Basin.The sampling section was divided into two units considering the distinct-different deposit environment and sediments accumulation rate.The lower part(Unit 1)and the peer part(Unit 2)with high resolution sample spacing(0.08–0.4 m)enables the identification of the precession cycle in two sedimentary sequences with distinct different sedimentary accumulation rate.MTM Power spectral analyses on untuned TOC series reveals significant peaks exceeding above the 95%confidence level and shows that both Unit 1 and Unit 2 have recorded Milankovitch cycles of 405 kyr long eccentricity,short eccentricity,obliquity and precession.The floating astronomical time scale(ATS)was constructed on the Shuanghe Section in the Early Silurian(~439.673–444.681 Ma),and which was calibrated by 405 kyr long eccentricity cycles.The total duration of the Wufeng and Longmaxi shales is 5.01 Myr.The floating ATS used for estimating the duration of the graptolite zones and each stage in the study interval.Finally,we postulated two models that could verify the linkage between orbital cycle and organic accumulation.To make sure whether productivity or preservation is the main factor that under long eccentricity control,the phase correlation between the obtained filtered signal and the theoretical orbital solution should be made clear in the further research. | Siding Jin Hucheng Deng Xing Zhu Yan Liu Sibing Liu Meiyan Fu | 2020 | Geoscience Frontiers2020，11，2： | 4 |
| 5 | Epigenetic dolomitization and the origin of xe- notopic dolomite texture显示文摘 | Gregg J M Sibely D F | 1984 | Journal of Sedimentary Research1984，54，3： | 1 |
| 6 | Multifunctional facets of retrovirus integrase显示文摘The retrovirus integrase(IN) is responsible for integration of the reverse transcribed linear c DNA into the host DNA genome. First, IN cleaves a dinucleotide from the 3' OH blunt ends of the viral DNA exposing the highly conserved CA sequence in the recessed ends. IN utilizes the 3' OH ends to catalyze the concerted integration of the two ends into opposite strands of the cellular DNA producing 4 to 6 bp staggered insertions, depending on the retrovirus species. The staggered ends are repaired by host cell machinery that results in a permanent copy of the viral DNA in the cellular genome. Besides integration, IN performs other functions in the replication cycle of several studied retroviruses. The proper organization of IN within the viral internal core is essential for the correct maturation of the virus. IN plays a major role in reverse transcription by interacting directly with the reverse transcriptase and by binding to the viral capsid protein and a cellular protein. Recruitment of several other host proteins into the viral particle are also promoted by IN. IN assists with the nuclear transport of the preintegration complex across the nuclear membrane. With several retroviruses, IN specifically interacts with different host protein factors that guide the preintegration complex to preferentially integrate the viral genome into specific regions of the host chromosomal target. Human gene therapy using retrovirus vectors is directly affected by the interactions of IN with these host factors. Inhibitors directed against the human immunodeficiency virus(HIV) IN bind within the active site of IN containing viral DNA ends thus preventing integration and subsequent HIV/AIDS. | Duane P Grandgenett Krishan K Pandey Sibes Bera Hideki Aihara | 2015 | World Journal of Biological Chemistry2015，6，3： | 1 |
| 7 | Peptide interactions with steel- surfaces:Inhibiton of corrosion and calcium carbonate precipitation 显示文摘 | E Mueller C S Sibes B J Little | 1993 | Corrosion1993，49，10： | 1 |
| 8 | Rescuing CD4+ CD25+ regulatory T-cell functions in rheumatoid arthritis by cytokine-targeted monoclonal antibody therapy显示文摘 | Sibe ril S Triebel F | 2007 | Drug Discoy Today2007，12，1314： | 1 |
| 9 | Peptide interactions with steel surfaces:Inhibitor of corrosion and calcium carbonate precipitation显示文摘 | Sibes C S Little B J | 1993 | Corrosion1993，49，10： | 1 |
| 10 | What next for China in space after Shenzhou? 显示文摘 | He Sibing | 2003 | Space Policy2003，19，3： | 1 |
| 11 | Rescuing CD4 + CD25^+ 1 regulatory T-cell functions in rheumatoid arthritis by cytokine-targeted monoclonal antibody therapy 显示文摘 | Bayry J Sibe ril S Triebel F | 2007 | Drug Discov Today2007，12，1314： | 1 |
| 12 | Spatial distribution of rolled up Kelvin-Helmholtz vortices at Earth’s dayside and flank magnetopause显示文摘 | Taylor M. G. G. T. Hasegawa H. Lavraud B. Phan T. Escoubet C. P. Dunlop M. W. Bogdanova Y. V. Borg A. L. Volwerk M. Berchem J. Constantinescu O. D. Eastwood J. P. Masson A. Laakso H. Soucek J. Fazakerley A. N. Frey H. U. Panov E. V. Shen C. Shi J. K. Sibe | 2012 | 2012 (263)2012，，263： | 1 |
| 13 | Process design and microstructure-property evolution during shear spinning of Ti_(2)AlNb-based alloy显示文摘Rotationally symmetric workpieces of Ti_(2)AlNb-based alloys have great potential for high-temperature service condition in aviation industry,while the poor workability limits their application until now.In this study,shear spinning and heat treatment were first conducted to investigate the corresponding microstructure evolution and mechanical properties of Ti_(2)AlNb conical workpieces.The microstructure of the 1^(st) and 2^(nd) pass spun workpieces(SP1 and SP2)mainly consisted of B2+retainedα2phases.After two passes spinning,the B2 phase texture changed from<111>//ND of as-received alloy to be<001>//ND.The ultimate tensile stress(UTS)of SP1 and SP2 was increased to 1163 MPa and 932 MPa,respectively,compared with 782 MPa of as-received alloy at 650℃.Also,the yield stress anomaly(YSA)occurred in SP1 and SP2 because{110}<111>and{112}<111>cross slip systems of B2 phase were difficult to slip at or below room temperature(RT),but they became active at 650℃ and above.As an essential step for increasing the spinnability of multi-pass spinning process of the Ti_(2)AlNb alloy,the H3heat treatment scheme,i.e.960℃/2 h+850℃/12 h,was carried out between two successive passes to increase the hot workability,by which the ductility of the heat treated as-spun workpieces with the microstructure of B2+primary O+acicular secondary O+high amount spheroidizedα2phases reached 72.1%at 900℃.After being subject to the H1 heat treatment scheme,i.e.960℃-2 h,the spun workpieces with the microstructure of B2+primary O+intergranular primaryα2phases achieved an optimized comprehensive mechanical properties both at room temperature and 650℃,which should be chosen as the post-spinning heat treatment process for the service requirement. | Sibing Wang Wenchen Xu Bin Shao Guoping Yang Yingying Zong Wanting Sun Zhongze Yang Debin Shan | 2022 | Journal of Materials Science & Technology2022，，6： | 1 |
| 14 | Analysisi of the determinants of universities efficiency in Turkey:Ap- plication of the data envelopment analysis and panel to- bit model 显示文摘 | Sible Setim Sibe! Dybarc Bursatioglu | 2013 | Social and Behavioral Sciences2013，89，： | 1 |
| 15 | Peptide interactions with steelsurface: Inhibiton of corrosion and calcium carbonate precipitation显示文摘 | E Mueller C S Sibes B J Little | 1993 | Corrsion1993，49，0： | 1 |
| 16 | Rescuing CD4+ CD25+ regulatory T-cell functions in rheumatoid arthritis by cy- tokine-targeted monoclonal antibody therapy显示文摘 | BayryJ Sibe ril S Triebel F | 2007 | Drug Dis- cov Today2007，12，1314： | 1 |
| 17 | HIV-1 Integrase Strand Transfer Inhibitors Stabilize an Integrase–Single Blunt-Ended DNA Complex显示文摘 | Sibes Bera Krishan K. Pandey Ajaykumar C. Vora Duane P. Grandgenett | 2011 | Journal of Molecular Biology2011，，5： | 1 |
| 18 | Molecular Interactions between HIV-1 Integrase and the Two Viral DNA Ends within the Synaptic Complex that Mediates Concerted Integration显示文摘 | Sibes Bera Krishan K. Pandey Ajaykumar C. Vora Duane P. Grandgenett | 2009 | Journal of Molecular Biology2009，，1： | 1 |
| 19 | Peptide interactions with steel sur- faces: Inhibition of corrosion and calcium carbonate precipitation 显示文摘 | Mueller E Sibes C S Little B J | 1993 | Corrosion1993，49，10： | 1 |
| 20 | Commonly Used Motivational Strategies in Middle School EFL Classroom显示文摘 | Sibing Xu | 2015 | International English Education Research2015，，8： | 0 |
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