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| 1 | Geochronologic Constraints on the Magmatic Underplating of the Gangdisê Belt in the India-Eurasia Collision: Evidence of SHRIMP II Zircon U-Pb Dating显示文摘丰富的小 mafic 侵入发生沿着 theGangdise magmatic 与 granitoids 联系了带。除了在 granitoid plutons 以内的许多分离斑粝岩身体, agabbro 辉岩地区沿着 Gangdise 带的南部的边缘发生到 theYarlung Zangbo 缝术的北方。mafic 侵入地区空间地对应于一个强壮的空中地磁学的异例,它扩大约 1400 km。mafic 侵入由斑粝岩和粗玄岩的间歇地分布式的小身体和堤组成与辉岩,橄榄石辉岩, pegmatitic 辉岩和角闪岩积累。许多证据显示 Gangdise gabbro-pyroxeniteassemblage 是最可能的结果在导出披风的岩浆的 plating 下面。详细的地调查和 mafic 岩石的系统的采样在六个地点被进行,沿着 mafic intrusive 地区的 theLhasa-Xigaze 片断,并且被标明日期的锆石虾 II U-Pb 跟随。除了二岁,样品以前出版了(47.0 +- 1 个妈和 48.9 +- 1.1 妈) ,四斑粝岩取样的留下的同位素年龄是 51.6 +- 1.3Ma, 52.5 +- 3.0 妈, 50.2 +-第 4.2Maa 49.9 +- 1.1Ma。年龄(47-52.5 妈) 提供的这些的范围在 Gangdise 下面在 plating 下面岩浆预定的 Eocene 上的 geochronologic 限制在 ca 系上带子。50 妈。这在 plating 下面 eventpost 过时到 1500 万年的印度欧亚大陆大陆碰撞的开始并且与岩浆混合的一个过程是同时期的。虾 II U-Pb 同位素分析也从一些锆石谷物发现几老年,主要在 479-526 妈的一个范围(加权的平均年龄 503+- 10 妈) ,当时,因此关于先存在的下地壳产出信息在 maficmagma 的 plating 下面发生。在 plating 下面的岩浆在印度欧亚大陆的碰撞期间是为外壳的生长的主要机制之一,这被相信,可能相应及时到 the14-16 的形成 km 厚“外壳披风过渡地区”由 Vp = 6.85-6.9 km/s 描绘了。 | DONG Guochen MO Xuanxue ZHAO Zhidan GUO Tieying WANG Liangliang CHEN Tao | 2005 | Acta Geologica Sinica(English Edition)2005，79，6： | 50 |
| 2 | Research on seismic fluid identification driven by rock physics显示文摘Seismic fluid identification works as an effective approach to characterize the fluid feature and distribution of the reservoir underground with seismic data. Rock physics which builds bridge between the elastic parameters and reservoir parameters sets the foundation of seismic fluid identification, which is also a hot topic on the study of quantitative characterization of oil/gas reservoirs. Study on seismic fluid identification driven by rock physics has proved to be rewarding in recognizing the fluid feature and distributed regularity of the oil/gas reservoirs. This paper summarizes the key scientific problems immersed in seismic fluid identification, and emphatically reviews the main progress of seismic fluid identification driven by rock physics domestic and overseas, as well as discusses the opportunities, challenges and future research direction related to seismic fluid identification. Theoretical study and practical application indicate that we should incorporate rock physics, numerical simulation, seismic data processing and seismic inversion together to enhance the precision of seismic fluid identification. | YIN XingYao ZONG ZhaoYun WU GuoChen | 2015 | Science China Earth Sciences2015，58，2： | 49 |
| 3 | Measure theory of statistical convergence显示文摘The question of establishing measure theory for statistical convergence has been moving closer to center stage, since a kind of reasonable theory is not only fundamental for unifying various kinds of statistical convergence, but also a bridge linking the studies of statistical convergence across measure theory, integration theory, probability and statistics. For this reason, this paper, in terms of subdifferential, first shows a representation theorem for all finitely additive probability measures defined on the σ-algebra A of all subsets of N, and proves that every such measure can be uniquely decomposed into a convex combination of a countably additive probability measure and a statistical measure (i.e. a finitely additive probability measure μ with μ(k) = 0 for all singletons {k}). This paper also shows that classical statistical measures have many nice properties, such as: The set S of all such measures endowed with the topology of point-wise convergence on A forms a compact convex Hausdorff space; every classical statistical measure is of continuity type (hence, atomless), and every specific class of statistical measures fits a complementation minimax rule for every subset in N. Finally, this paper shows that every kind of statistical convergence can be unified in convergence of statistical measures. | CHENG LiXin LIN GuoChen LAN YongYi LIU Hui | 2008 | Science China Mathematics2008，51，12： | 26 |
| 4 | Seismic wave scattering inversion for fluid factor of heterogeneous media显示文摘Elastic wave inverse scattering theory plays an important role in parameters estimation of heterogeneous media.Combining inverse scattering theory,perturbation theory and stationary phase approximation,we derive the P-wave seismic scattering coefficient equation in terms of fluid factor,shear modulus and density of background homogeneous media and perturbation media.With this equation as forward solver,a pre-stack seismic Bayesian inversion method is proposed to estimate the fluid factor of heterogeneous media.In this method,Cauchy distribution is utilized to the ratios of fluid factors,shear moduli and densities of perturbation media and background homogeneous media,respectively.Gaussian distribution is utilized to the likelihood function.The introduction of constraints from initial smooth models enhances the stability of the estimation of model parameters.Model test and real data example demonstrate that the proposed method is able to estimate the fluid factor of heterogeneous media from pre-stack seismic data directly and reasonably. | YIN XingYao ZONG ZhaoYun WU GuoChen | 2014 | Science China Earth Sciences2014，57，3： | 12 |
| 5 | Improving seismic interpretation: a high-contrast approximation to the reflection coefficient of a plane longitudinal wave显示文摘Linearized approximations of reflection and transmission coefficients set a foundation for amplitude versus offset(AVO) analysis and inversion in exploration geophysics.However,the weak properties contrast hypothesis of those linearized approximate equations leads to big errors when the two media across the interface vary dramatically.To extend the application of AVO analysis and inversion to high contrast between the properties of the two layers,we derive a novel nonlinearized high-contrast approximation of the PP-wave reflection coefficient,which establishes the direct relationship between PPwave reflection coefficient and P-wave velocities,S-wave velocities and densities across the interface.(A PP wave is a reflected compressional wave from an incident compressional wave(P-wave).) This novel approximation is derived from the exact reflection coefficient equation with Taylor expansion for the incident angle.Model tests demonstrate that,compared with the reflection coefficients of the linearized approximations,the reflection coefficients of the novel nonlinearized approximate equation agree with those of the exact PP equation better for a high contrast interface with a moderate incident angle.Furthermore,we introduce a nonlinear direct inversion method utilizing the novel reflection coefficient equation as forward solver,to implement the direct inversion for the six parameters including P-wave velocities,S-wave velocities,and densities in the upper and lower layers across the interface.This nonlinear inversion algorithm is able to estimate the inverse of the nonlinear function in terms of model parameters directly rather than in a conventional optimization way.Three examples verified the feasibility and suitability of this novel approximation for a high contrast interface,and we still could estimate the six parameters across the interface reasonably when the parameters in both media across the interface vary about 50%. | Yin Xingyao Zong Zhaoyun Wu Guochen | 2013 | Petroleum Science2013，10，4： | 12 |
| 6 | Petrogenesis and tectonic implications of early Paleozoic granitoids in East Kunlun belt: Evidences from geochronology, geochemistry and isotopes显示文摘The East Kunlun Orogenic Belt(EKOB) provides an important link to reconstruct the evolution of the Proto-Tethys and Paleo-Tethys realm. The EKOB is marked by widespread Early Paleozoic magmatism.Here we report the petrology, bulk geochemistry, zircon Ue Pb dating and, Lue Hf and SreN d isotopic data of the Early Paleozoic granitic rocks in Zhiyu area of the southern EKOB. Based on the zircon U-Pb dating, these granitoids, consisting of diorite, granodiorite and monzogranite, were formed during 450 -430 Ma the Late Ordovician to Middle Silurian. The diorite and granodiorite are high Sr/Y ratio as adakitic affinities, and the monzogranite belongs to highly fractionated I-type. Their(^(87)Sr/^(86)Sr)ivalues range from 0.7059 to 0.7085, εNd(t) values from -1.6 to -6.0 and the zircon εHf(t) values show large variations from +9.1 to -8.6 with Hf model ages(T_(DM2)) about 848 Ma and 1970 Ma. The large variations of whole-rock Nd and zircon Hf isotopes demonstrate strong isotopic heterogeneity of the source regions which probably resulted from multi-phase underplating of mantle-derived magmas. Geochemical and isotopic studies proved that the diorite and granodiorite had been derived from partial melting of heterogeneous crustal source with variable contributions from ancient continental crust and juvenile components, and the monzogranites were representing fractional crystallization and crustal contamination for arc magma. The Early Paleozoic adakitic rocks and high-K calc-alkaline granitoids in the southern EKOB were likely emplaced in a continental marginal arc setting possibly linked to the southwards subduction of the Paleo Kunlun Ocean and the magma generation is linked to partial melting of thickened continental crust induced by underplating of mantle-derived magmas. | Guochen Dong Mingfei Luo Xuanxue Mo Zhidan Zhao Liangqiong Dong Xuehui Yu Xin Wang Xiaowei Li Xiongfei Huang Yanbin Liu | 2018 | Geoscience Frontiers2018，9，5： | 10 |
| 7 | First-order perturbation approximation for rock elastic moduli in transversely isotropic media显示文摘Seismic anisotropy is a relatively common seismic wave phenomenon in laminated sedimentary rocks such as shale and it can be used to investigate mechanical properties of such rocks and other geological materials. Young's modulus and Poisson's ratio are the most common mechanical properties determined in various rock engineering practices. Approximate and explicit equations are proposed for determining Young's modulus and Poisson's ratio in anisotropic rocks, in which the symmetry plane and symmetry axis of the anisotropy are derived from the constitutive equation of transversely isotropic rock. These equations are based on the media decomposition principle and seismic wave perturbation theory and their accuracy is tested on two sets of laboratory data. A strong correlation is found for Young's modulus in two principal directions and for Poisson's ratio along the symmetry plane. Further, there is an underprediction of Poisson's ratio along the symmetry axis, although the overall behavior follows the trend of the measured data. Tests on a real dataset show that it is necessary to account for anisotropy when characterizing rock mechanical properties of shale. The approximate equations can effectively estimate anisotropic Young's modulus and Poisson's ratio, both of which are critical rock mechanical data input for hydraulic fracturing engineering. | WU GuoChen ZHAO XiaoLong TANG Jie DU ZeYuan | 2017 | Science China Earth Sciences2017，60，9： | 6 |
| 8 | Mining Semantic Trajectory Patterns from Geo-Tagged Data显示文摘 | Guochen Cai Kyungmi Lee Ickjai Lee | 2018 | Journal of Computer Science & Technology2018，33，4： | 6 |
| 9 | Petrogenesis of Kejie Granite in the Northern Changning-Menglian Zone, Western Yunnan: Constraints from Zircon U-Pb Geochronology, Geochemistry and Hf Isotope显示文摘The Kejie pluton is located in the north of the Changning-Menglian suture zone. The rock types are mainly biotite-granite. Zircon LA-ICP-MS U-Pb dating indicates that the Kejie pluton emplaced at about 80–77 Ma, Late Cretaceous. The Kejie pluton samples are characterized by high SiO2(71.68%–72.47%), K2O(4.73%–5.54%), total alkali(K2O + Na2O = 8.21%–8.53%), K2O/Na2O ratios(1.36–1.94) and low P2O5(0.13%–0.17%), with A/CNK of 1.025–1.055; enriched in U, Th, and K, depleted in Ba, Nb, Sr, Ti, P and Eu. They are highly fractionated, slightly peraluminous I-type granite. The two samples of the Kejie pluton give a large variation of εHf(t) values(-5.04 to 1.96) and Hf isotope crustal model ages of 1.16–1.5 Ga. Zircon Hf isotopes and zircon saturation temperatures of whole-rock(801°C–823°C) show that the mantle-derived materials maybe have played a vital role in the generation of the Kejie pluton. The Kejie pluton was most likely generated in a setting associated with the eastward subduction of the neo-Tethys ocean, where intrusion of mantle wedge basaltic magmas in the crust caused the anatexis of the latter, forming hybrid melts, which subsequently experienced high-degree fractional crystallization. | NIE Fei DONG Guochen MO Xuanxue WANG Xia FAN Wenyu DONG Meiling ZHU Huaping | 2014 | Acta Geologica Sinica(English Edition)2014，88，3： | 3 |
| 10 | A stoichiometric terbium-europium dyad molecular thermometer: energy transfer properties显示文摘The optical thermometer has shown great promise for use in the fields of aeronautical engineering,environmental monitoring and medical diagnosis.Self-referencing lanthanide thermo-probes distinguish themselves because of their accuracy,calibration,photostability,and temporal dimension of signal.However,the use of conventional lanthanidedoped materials is limited by their poor reproducibility,random distance between energy transfer pairs and interference by energy migration,thereby restricting their utility.Herein,a strategy for synthesizing hetero-dinuclear complexes that comprise chemically similar lanthanides is introduced in which a pair of thermosensitive dinuclear complexes,cycTb-phEu and cycEu-phTb,were synthesized.Their structures were geometrically optimized with an internuclear distance of approximately 10.6Å.The sensitive linear temperature-dependent luminescent intensity ratios of europium and terbium emission over a wide temperature range(50–298 K and 10–200 K,respectively)and their temporal dimension responses indicate that both dinuclear complexes can act as excellent self-referencing thermometers.The energy transfer from Tb^(3+)to Eu^(3+)is thermally activated,with the most important pathway involving the ^(7)F_(1) Eu^(3+)J-multiplet at room temperature.The energy transfer from the antenna to Eu^(3+)was simulated,and it was found that the most important ligand contributions to the rate come from transfers to the Eu^(3+)upper states rather than direct ligand–metal transfer to 5D1 or 5D0.As the first molecular-based thermometer with clear validation of the metal ratio and a fixed distance between the metal pairs,these dinuclear complexes can be used as new materials for temperature sensing and can provide a new platform for understanding the energy transfer between lanthanide ions. | Guochen Bao Ka-Leung Wong Dayong Jin Peter A.Tanner | 2018 | Light(Science & Applications)2018，7，1： | 3 |
| 11 | A reactive oxygen species burst causes haploid induction in maize显示文摘Haploid induction (HI) is an important tool in crop breeding. Phospholipase A1 (ZmPLA1)/NOT LIKE DAD (NLD)/MATRILINEAL (MTL) is a key gene controlling HI in maize;however, the underlying molecular mechanism remains unclear. In this study, to dissect why loss of ZmPLA1 function could mediate HI we performed a comprehensive multiple omics analysis of zmpla1 mutant anthers by integrating transcriptome, metabolome, quantitative proteome, and protein modification data. Functional classes of significantly enriched or differentially abundant molecular entities were found to be associated with the oxidative stress response, suggesting that a reactive oxygen species (ROS) burst plays a critical role in HI. In support of this, we further discovered that a simple chemical treatment of pollen with ROS reagents could lead to HI. Moreover, we identified ZmPOD65, which encodes a sperm-specific peroxidase, as a new gene controlling HI. Taken together, our study revealed a likely mechanism of HI, discovered a new gene controlling HI, and created a new method for HI in maize, indicating the importance of ROS balance in maintaining normal reproduction and providing a potential route to accelerate crop breeding. | Chenglin Jiang Ju Sun Rui Li Shijuan Yan Wei Chen Liang Guo Guochen Qin Pengcheng Wang Cheng Luo Wenjie Huang Qinghua Zhang Alisdair R.Fernie David Jackson Xiang Li Jianbing Yan | 2022 | Molecular Plant2022，15，6： | 2 |
| 12 | Contribution of syncollisional felsic magmatism to continental crust growth: A case study of the Paleogene Linzizong volcanic Succession in southern Tibet显示文摘 | Xuanxue Mo Yaoling Niu Guochen Dong Zhidan Zhao Zengqian Hou Su Zhou Shan Ke | 2008 | Chemical Geology2008，，1： | 2 |
| 13 | Response of PM_(2.5)-bound elemental species to emission variations and associated health risk assessment during the COVID-19 pandemic in a coastal megacity显示文摘The coronavirus(COVID-19)pandemic is disrupting the world from many aspects.In this study,the impact of emission variations on PM_(2.5)-bound elemental species and health risks associated to inhalation exposure has been analyzed based on real-time measurements at a remote coastal site in Shanghai during the pandemic.Most trace elemental species decreased significantly and displayed almost no diel peaks during the lockdown.After the lockdown,they rebounded rapidly,of which V and Ni even exceeded the levels before the lockdown,suggesting the recovery of both inland and shipping activities.Five sources were identified based on receptor modeling.Coal combustion accounted for more than 70%of the measured elemental concentrations before and during the lockdown.Shipping emissions,fugitive/mineral dust,and waste incineration all showed elevated contributions after the lockdown.The total non-carcinogenic risk(HQ)for the target elements exceeded the risk threshold for both children and adults with chloride as the predominant species contributing to HQ.Whereas,the total carcinogenic risk(TR)for adults was above the acceptable level and much higher than that for children.Waste incineration was the largest contributor to HQ,while manufacture processing and coal combustion were the main sources of TR.Lockdown control measures were beneficial for lowering the carcinogenic risk while unexpectedly increased the non-carcinogenic risk.From the perspective of health effects,priorities of control measures should be given to waste incineration,manufacture processing,and coal combustion.A balanced way should be reached between both lowering the levels of air pollutants and their health risks. | Guochen Wang Kan Huang Qingyan Fu Jia Chen Juntao Huo Qianbiao Zhao Yusen Duan Yanfen Lin Fan Yang Wenjie Zhang Hao Li Jian Xu Xiaofei Qin Na Zhao Congrui Deng | 2022 | Journal of Environmental Sciences2022，34，12： | 2 |
| 14 | Dehydration property of Shrimp(Pandalus borealis)undergoing heat-pump drying process显示文摘Peeled,headed or whole shrimp(Pandalus borealis)was dried in a heat-pump dryer at-2-0℃and 20℃,respectively,and desorption isotherms characterizing the dehydration property of each shrimp sample group were determined.Desorption isotherms of shrimp handled differently and dried at different temperatures(-2-0℃or 20℃)could be well described by Oswin’s model(X=a(1-a_(w)/a_(w))).The regression model of peeled,headed or whole shrimp was established,which is reliable for predicting the desorption isotherms of shrimp undergoing heat-pump drying.The handling methods of shrimp exhibit measurable influence on desorption isotherms of shrimp,whereas drying temperature(-2-0℃or 20℃)has little influence on the constants of a and n in Oswin’s model,of whole shrimp,even though it has certain influence on these constants of peeled and headed shrimp.For heat-pump drying,headed shrimp may have a better stability than peeled or whole shrimp due to the best stability. | Zhang Guochen Sigurjón Arason Sveinn VíkingurÁrnason | 2009 | International Journal of Agricultural and Biological Engineering2009，2，4： | 2 |
| 15 | A Solution to Old Problems显示文摘I work in the Dalian Development Zone. Although the central government did not invest a penny, the zone’s annual revenue is some 5 billion yuan. In 2003, it surpassed 6 billion yuan. There are many solely foreign-invested enterprises in the development zone-more than 300 are Japanese, and there are many Sino-foreign joint ventures. The annual profits of 70 million yuan come mostly from these joint ventures.I think the development zone will play an important role in the revital-ization of industries in the Northeast. | LIU GUOCHEN deputy director of the Dalian Economic and Technology Development Zone Administrative Committee, and a PHD of Economics. | 2004 | China Today2004，53，3： | 2 |
| 16 | MODEL STUDY OF DREDGED CHANNEL SILTATION IN OFFSHORE OPEN WATER显示文摘Based on the model study, the siltation of dredged channel under the condition of clear water and sediment-water mixture in Lianyun Harbor, Jiangsu Province and the experimental method under complex hydrodynamic elements such as tides, winds, waves and tidal currents are studied. The regularities of the variation of the velocity in the dredged channel in clear water are discussed as well. A group of curves such as water depth, velocity and angle has been plotted as a guide to the selection of a proper direction for a dredged channel. The intensity of siltation and the rate of deposition in the condition of sediment-water mixture, and the relationship between the dimensions of the dredged channel and the deposition amount can be estimated. | Li, Anzhong Li, Guochen Liu, Guangchen | 1990 | China Ocean Engineering1990，5，1： | 2 |
| 17 | Mantle contributions to crustal thickening during continental collision: Evidence from Cenozoic igneous rocks in southern Tibet显示文摘 | Xuanxue Mo Zengqian Hou Yaoling Niu Guochen Dong Xiaoming Qu Zhidan Zhao Zhiming Yang | 2006 | LITHOS2006，，1： | 2 |
| 18 | The aggregate constraint homotopy method for nonconvex nonlinear programming显示文摘 | YU Bo FENG Guochen ZHANG Shaoliang | 2001 | Nonlinear Analysis Theory Methods & Applications2001，45，： | 1 |
| 19 | Test on evaluation method for biodegradability of lubricants显示文摘 | Yang Lihe Zhu Yong Fan Guochen | 2008 | Transactions of Tianjin University2008，14，： | 1 |
| 20 | Existence of interior pathway to the Karush-Kuhn-Tucker point' of a nonconvex programming problems显示文摘 | Feng Guochen Lin Zhenghua Yu Bo | 1998 | Nonl Anal1998，32，6： | 1 |
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