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Geochronology,Fluid Inclusions and Isotopic Characteristics of the Dongjun Pb-Zn-Ag Deposit,Inner Mongolia,NE China

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Acta Geologica Sinica(English Edition) 2021年第5期95卷 1611-1633页

作者： xie wei WEN Shouqin ZHANG Guangliang TANG Tieqiao Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines Department of GeologyNortheastern UniversityShenyang 110819China

The Dongjun Pb-Zn-Ag deposit in the northern part of the Great Xing’an Range(NE China)consists of quartzsulfide vein-type and breccia-type mineralization,related to granite *** alteration is well-developed and includes potassic-silicic-sericitic alteration,phyllic alteration and propylitic *** stages of mineralization are recognized on the basis of field evidence and petrographic observation,demarcated by assemblages of quartz-pyritearsenopyrite(early stage),quartz-polymetallic sulfide(intermediate stage)and quartz-carbonate-pyrite(late stage).Zircon LA-ICP-MS U-Pb dating indicates that the granite porphyry was emplaced at 146.7±1.2 Ma(Late Jurassic).Microthermometry and laser Raman spectroscopy shows that ore minerals were deposited in conditions of intermediate temperatures(175-359℃),low salinity(0.5-9.3 wt% Na Cl eqv.)and low density(0.60-0.91 g/cm^(3)).Ore-forming fluids were derived largely from magmatic hydrothermal processes,with late-stage addition of meteoric water,belonging to a H_(2)O-NaCl-CO_(2)±CH_(4) *** δ^(34)SV-CDT values range from 0.75‰ to 4.70‰.The ^(206)Pb/^(204)Pb,^(207)Pb/^(204)Pb,and ^(208)Pb/^(204)Pb values of the ore minerals are in the ranges of 18.240-18.371,15.542-15.570,and 38.100-38.178,*** for the S and Pb isotopic systems indicate that the ore-forming metals and sulfur were derived from Mesozoic *** on the geological characteristics and geochemical signatures documented in this study,we conclude that the Dongjun deposit is a mesothermal magmatic hydrothermal vein-type Pb-Zn-Ag deposit controlled by fractures and related to granite porphyry,in response to Late Jurassic tectonic-magmatic-hydrothermal *** further conclude that fluid immiscibility,fluid mixing and fluid-rock interactions were the dominant mechanisms for deposition of the ore-forming materials.

关键词： zircon U-Pb dating fluid inclusions H-O-S-Pb isotopes mesothermal Pb-Zn-Ag deposit Dongjun northern Great Xing’an Range

General construction of revocable identity-based fully homomorphic signature

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Science China(Information Sciences) 2020年第3期63卷 266-271页

作者： Congge xie Jian WENG wei LU Lin HOU College of Information Science and Technology Jinan University School of Data and Computer Science Sun Yat-sen University

Dear editor,Fully homomorphic signature (FHS) is a cryptographic primitive and allows anyone to conduct any computations over signatures and generate a signature which, when verified, matches the calculated value of the computational run on the messages. An identity-based fully homomorphic signature (IBFHS) extended from an FHS can avoid

关键词： General construction of revocable identity-based fully homomorphic signature

Catalytic reductive dechlorination of p-chlorophenol in water using Ni/Fe nanoscale particles

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Journal of Environmental Sciences 2007年第3期19卷 362-366页

作者： ZHANG wei-hua QUAN xie ZHANG Zhuo-yong College of Urban and Environmental Sciences Northeast Normal University Changchun 130024 China School of Environmental and Biological Science and Technology Dalian University of Technology Dalian 116023 China College of Chemistry Inner Mongolia University for the Nationalities Tongliao 028043 China

Nanoscale bimetallic Ni/Fe particles were synthesized from the reaction of sodium borohydride （NaBH4） with reduction of Ni^2＋ and Fe^2＋ in aqueous solution. The obtained Ni/Fe particles were characterized by TEM （transmission electron microscope）, XRD （X-ray diffractometer）, and N2-BET. The dechlorination activity of the Ni/Fe was investigated using p-chlorophenol （p-CP） as a probe agent. Results demonstrated that the nanoscale Ni/Fe could effectively dechlorinate p-CP at relatively low metal to solution ratio of 0.4 g/L （Ni 5 wt%）. The target with initial concentration ofp-CP 0.625 mmol/L was dechlorinted completely in 60 rain under ambient temperature and pressure. Factors affecting dechlorination efficiency, including reaction temperature, pH, Ni loading percentage over Fe, and metal to solution ratio, were investigated. The possible mechanism of dechlorination ofp-CP was proposed and discussed. The pseudo-first- order reaction took place on the surface of the Ni/Fe bimetallic particles, and the activation energy of the dechlorination reaction was determined to be 21.2 kJ/mol at the temperature rang of 287-313 K.

关键词： Ni/Fe bimetal nanoscale particles catalytic reduction p-CP dechlorination

Achieving Energy-Saving,Continuous Redox Flow Desalination with Iron Chelate Redoxmers

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Energy Material Advances 2023年第1期4卷 25-33页

作者： Rongxuan xie Diqing Yue Zhenmeng Peng Xiaoliang wei Department of Chemical BiomolecularCorrosion EngineeringThe University of AkronAkronOH 44325USA Indiana University-Purdue University Indianapolis 723 West Michigan StreetIndianapolisIN 46202USA Purdue University 585 Purdue MallWest LafayetteIN 47907USA

Desalination of saline water is becoming an increasingly critical strategy to overcome the global challenge of drinkable water shortage,but current desalination methods are often plagued with major drawbacks of high energy consumption,high capital cost,or low desalination *** address these drawbacks,we have developed a unique continuous-mode redox flow desalination approach capitalizing on the characteristics of redox flow *** operation is based on shuttled redox cycles of very dilute Fe^(2+)/Fe^(3+)chelate redoxmers with ultralow cell *** air instability of Fe^(2+)chelate is naturally compensated for by its in situ electrochemical generation,making the desalination system capable of operations with electrolytes at any specified state of *** unoptimized conditions,fast desalination rates up to 404.4 mmol·m^(−2)·h^(−1) and specific energy consumptions as low as 7.9 Wh·molNaCl^(−1) have been successfully ***,this desalination method has offered an opportunity of sustainable,distributed drinkable water supplies through direct integration with renewable energy sources such as solar ***,our redox flow desalination design has demonstrated competitive desalination performance,promising to provide an energy-saving,high-capacity,robust,cost-effective desalination solution.

关键词： solution. chelate dilute

Changes in climate regimes over China based on a high-resolution dataset

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Science Bulletin 2019年第6期64卷 377-379页

作者： wei Huang Jingjing Yan Chang Liu Tingting xie Key Laboratory of Western China’s Environmental Systems (Ministry of Education) College of Earth and Environmental Sciences Lanzhou University Central Asia Center for Atmospheric Science Research China Meteorological Administration Department of Geosciences University of Arkansas

During the 20th century the global climate has been shifted towards warmer and drier regimes, mainly due to anthropogenic warming [1,2]. Climate changes can notably disrupt the environment and ecosystems. To evaluate the impacts of climate change on ecoregions, the Kdppen-Trewartha (K-T) climate classification [3] is widely used because it was constructed on the basis of surface vegetation. The K-T classification system combines temperature, precipitation, and their seasonality into a single metric. Six major climate types and several sub-climate types are defined (A: tropical, B: dry, C: subtropical, D: temperate, E: subpolar, F: polar). Each K-T climate type is consistent with certain prevalent plant species. Definitions and criteria of K-T climate types were outlined by Feng et al.[4].

关键词： climate has been shifted change on ecoregions climate types

QPSO-based algorithm of CSO joint infrared super-resolution and trajectory estimation

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Journal of Systems Engineering and Electronics 2011年第3期22卷 405-411页

作者： Liangkui Lin Hui Xu Dan Xu wei An Kai xie School of Electronics and Engineering National University of Defense TechnologyChangsha 410073P.R.China Unit 94810 of the PLA Nanjing 210007P.R.China Artillery Academy of the PLA Hefei 230031P.R.China

The midcourse ballistic closely spaced objects（CSO） create blur pixel-cluster on the space-based infrared focal plane,making the super-resolution of CSO quite necessary.A novel algorithm of CSO joint super-resolution and trajectory estimation is *** algorithm combines the focal plane CSO dynamics and radiation models,proposes a novel least square objective function from the space and time information,where CSO radiant intensity is excluded and initial dynamics（position and velocity） are chosen as the model ***,the quantum-behaved particle swarm optimization（QPSO） is adopted to optimize the objective function to estimate model parameters,and then CSO focal plane trajectories and radiant intensities are ***,the estimated CSO focal plane trajectories from multiple space-based infrared focal planes are associated and filtered to estimate the CSO stereo ballistic ***,the performance（CSO estimation precision of the focal plane coordinates,radiant intensities,and stereo ballistic trajectories,together with the computation load） of the algorithm is tested,and the results show that the algorithm is effective and feasible.

关键词： super-resolution trajectory estimation closely spaced object(CSO) midcourse ballistic infrared focal plane quantumbehaved particle swarm optimization(QPSO).

Extensive Cold-Precipitation-Freezing Events in Southern China and Their Circulation Characteristics

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Advances in Atmospheric Sciences 2021年第1期38卷 81-97页

作者： Jing-Bei PENG Cholaw BUEH Zuo-wei xie Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China

Concurrence of low temperature,precipitation and freezing weather in an extensive area would cause devastating impacts on local economy and *** call such a combination of concurrent disastrous weather“extensive coldprecipitation-freezing”events(ECPFEs).In this study,the ECPFEs in southern China(15°−35°N,102°−123°E)are objectively defined by using daily surface observational data for the period 1951−*** ECPFE in southern China is defined if the low temperature area,precipitation area and freezing area concurrently exceed their respective thresholds for at least three consecutive *** identified ECPFEs are shown to be reasonable and reliable,compared with those in previous *** circulation anomalies in ECPFEs are characterized by a large-scale tilted ridge and trough pairing over mid-and high-latitude Eurasia,and the intensified subtropical westerlies along the southern foot of the Tibetan Plateau and the anomalous anticyclonic circulation over the subtropical western *** analysis reveals that the stable cold air from the north and the warm and moist air from the south converge,facilitating a favorable environment for the concurrence of extensive low-temperature,precipitation and freezing weather.

关键词： extensive cold-precipitation-freezing event southern China large-scale tilted ridge and trough trough over the Bay of Bengal western Pacific subtropical high

QCSH:A full quantum computer nuclear shell-model package

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Science China(Physics,Mechanics & Astronomy) 2023年第4期66卷 1-12页

作者： Peng Lv Shijie wei Hao-Nan xie Guilu Long Beijing Academy of Quantum Information Sciences Beijing 100193China State Key Laboratory of Low-Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing 100084China

The nuclear system is a promising area for demonstrating practical quantum advantage.A comprehensive computation of a nuclear system in a classical computer is beyond the capacity of current classical *** the rapid development of hardware,the prospect of using quantum computers in nuclear physics is close at *** this paper,we report a full quantum package,QCSH,for solving a nuclear shell model in a quantum *** uses the linear combination of the unitary formalism of quantum computing and performs all calculations in a quantum *** complexities of qubit resource and the number of basic gates of QCSH are both polynomials to the number of nucleons in *** example,QCSH is used to calculate the binding energies of 12 light nuclei(i.e.,^(2)H,^(3)H,^(3)He,^(4)He,^(6)Li,^(7)Li,^(12)C,^(14)N,^(16)O,^(17)O,^(23)Na,and^(40)Ca).Moreover,we experimentally demonstrate the calculation of deuteron binding energy using a superconducting quantum *** result indicates that QCSH can provide meaningful results already in near-term quantum devices.

关键词： quanutm simulation nuclear shell model linear combination of unitary operations quantum gradient descent

A novel adjustable multiple cross-hexagonal search algorithm for fast block motion estimation

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第8期8卷 1304-1310页

作者： xie Chun-lai CHEUNG Chun-ho LIU wei-zhong Department of Electronic Science and Technology Huazhong University of Science and Technology Wuhan 430074 China Hong Kong Institute of Technology Hong Kong China

In this paper,we propose a novel adjustable multiple cross-hexagonal search(AMCHS) algorithm for fast block motion estimation. It employs adjustable multiple cross search patterns(AMCSP) in the first step and then uses half-way-skip and half-way-stop technique to determine whether to employ two hexagonal search patterns(HSPs) subsequently. The AMCSP can be used to find small motion vectors efficiently while the HSPs can be used to find large ones accurately to ensure prediction quality. Simulation results showed that our proposed AMCHS achieves faster search speed,and provides better distortion performance than other popular fast search algorithms,such as CDS and CDHS.

关键词： Motion estimation Fast search algorithm Adjustable search patterns Threshold strategy Hexagonal search pattern