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Characteristics of Hydrogen and Oxygen Isotopes and Noble Gas Isotopes in the Groundwater of Weishan, Wudalianchi, Northeast China

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Acta Geologica Sinica(English Edition) 2022年第5期96卷 1729-1741页

作者： wang shuai HUANG Xuelian QI Shihua HAN Yongjie KUANG Jian wang Siqi wang He xiao Zhicai School of Environmental Studies China University of GeosciencesWuhan 430078China State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesWuhan 430078China Chinese Academy of Geological Sciences Beijing 100037China Hydrogeological Engineering Geological Survey Institute of Heilongjiang Province Harbin 150030China

According to the hydrochemical characteristics, hydrogen and oxygen isotope characteristics and the ratio of noble gas isotopes of the sandstone aquifer and basalt aquifer, this study calculated the recharge temperature and residence time of groundwater in the Weishan area of Wudalianchi, also calculating the contribution of noble gas components from different sources to the samples. Based on the characteristics of hydrogen and oxygen isotopes and noble gases Xe and Ne, the recharge altitude and recharge temperature of the two aquifers were estimated, and the recharge temperature fitting with the NGT model as verified, the results showing that the main recharge altitude of groundwater in the region was 500–600 m, the recharge temperature being 2–7°C. He_(eq) and He_(ea) of the samples have been simulated using the OD model, the content of radioactive ~4He in the crust being obtained, the groundwater ages under the two conditions(closed condition and open condition) both being simulated. The results show that groundwater from the sandstone layer water is older than groundwater from the basalt layer. Hydrochemical characteristics and noble gas isotope ratios indicate that in the basalt aquifer and sandstone aquifer in the Weishan area, in addition to atmospheric and crustal helium, there is also an input of mantle-derived helium. The fault constitutes the uplift channel for groundwater containings mantle components, which results in the mantle source composition in water samples near the fault being much higher than those form non-fault areas.

关键词： groundwater hydrochemistry hydrogen and oxygen isotopes noble gases ~4He age mantle source input

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Possible quantum paraelectric state in Kitaev spin liquid candidate H3LiIr2O6

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Science China(Physics,Mechanics & Astronomy) 2020年第11期63卷 109-114页

作者： shuai wang Long Zhang Fa wang International Center for Quantum Materials School of PhysicsPeking UniversityBeijing 100871China Kavli Institute for Theoretical Sciences and CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of SciencesBeijing 100190China Physical Science Laboratory Huairou National Comprehensive Science CenterBeijing 101400China Collaborative Innovation Center of Quantum Matter Beijing 100871China

A new quantum spin liquid(QSL)candidate material H3LiIr2O6 was synthesized recently and was found not to show any magnetic order or phase transition down to low *** this work,we study the quantum dynamics of the hydrogen ions,i.e.,protons,in this material by combining first-principles calculations and theoretical *** show that each proton and its adjacent oxygen ions form an electric *** dipole interactions and the proton tunneling are captured by a transverse-field Ising model with a quantum disordered paraelectric ground *** dipole excitations have an energy gap△d=60 meV,and can be probed by the infrared optical spectroscopy and the dielectric *** argue that the electric dipole fluctuations renormalize the magnetic interactions in H3LiIr2O6 and lead to a Kitaev QSL state.

关键词： spin liquid Kitaev material quantum paraelectricity first-principles calculations

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Metasurface designed with quantitative field distributions

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Light(Science & Applications) 2023年第6期12卷 941-942页

作者： shuai wang Yuanmu Yang State Key Laboratory for Precision Measurement Technology and Instruments Department of Precision InstrumentTsinghua UniversityBeijing 100084China

A new method for designing metasurfaces has been proposed and demonstrated,which allows for the generation of precise quantitative field *** unique approach involves combining a tandem neural network with an iterative algorithm to optimize the metasurface design,enabling accurate control over the intensity and polarization of the resulting *** strategy is both efficient and robust and has the potential to accelerate the development of metasurface devices with complex functionalities.

关键词： field. surface field

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Synthesis-free directional modulation for retrodirective frequency diverse array

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Science China(Information Sciences) 2020年第10期63卷 152-173页

作者： Sheng KE Jianping AN shuai wang School of Information and Electronics Beijing Institute of Technology

Combination of directional modulation(DM) and frequency diverse array(FDA) provides a novel opportunity for enabling physical layer security because of the enhanced ability of distance ***, in the existing studies, the time-varying nature of the FDA pattern is usually ignored. In this paper, a modified model of FDA-DM is proposed, in which the ignored time factor in the previous studies is taken into consideration for providing a new and more accurate perspective on evaluating the security of FDA-DM. Furthermore, we reveal that FDA-DM can achieve angle-dependent and directional-time-coupleddependent security. After that, based on the retrodirective FDA(RFDA) with a new structure, a novel synthesis-free FDA-DM scheme is proposed for both overcoming the limitations of the FDA-DM scheme and allowing self-tracking the position of the pilot signal without any prior knowledge. Meanwhile, a new set of nonlinear frequency offsets, defined as rearranged linear frequency offsets(RLFOs), is also proposed for both combining the advantages of the linear/nonlinear frequency offsets and bringing conveniences to practical implementation. In addition, the closed-form expression of the average signal-to-artificial-noise-ratio(SANR)is given out for evaluating the security performance of the proposed scheme. Finally, numerical results are presented to verify both the accuracy of the proposed theoretical analysis and the superiority of the RFDADM scheme.

关键词： secure transmission frequency diverse array (FDA) frequency offsets (FOs) retrodirective array average SANR distribution

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Recent advances and key opportunities on in-plane micro-supercapacitors:From functional microdevices to smart integrated microsystems

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Journal of Energy Chemistry 2023年第6期81卷 410-431,I0010页

作者： Jieqiong Qin Hongtao Zhang Zhi Yang xiao wang Pratteek Das Feng Zhou Zhong-shuai Wu State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina College of Science Henan Agricultural UniversityZhengzhou 450002HenanChina Dalian National Laboratory for Clean Energy Chinese Academy of SciencesDalian 116023LiaoningChina

The popularization of portable,implantable and wearable microelectronics has greatly stimulated the rapid development of high-power planar micro-supercapacitors(PMSCs).Particularly,the introduction of new functionalities(e.g.,high voltage,flexibility,stretchability,self-healing,electrochromism and photo/thermal response)to PMSCs is essential for building multifunctional PMSCs and their smart selfpowered integrated *** this review,we summarized the latest advances in PMSCs from various functional microdevices to their smart integrated ***,the functionalities of PMSCs are characterized by three major factors to emphasize their electrochemical behavior and unique scope of *** include but are not limited to high-voltage outputs(realized through asymmetric configuration,novel electrolyte and modular integration),mechanical resilience that includes various feats of flexibility or stretchability,and response to stimuli(self-healing,electrochromic,photo-responsive,or thermal-responsive properties).Furthermore,three representative integrated microsystems including energy harvester-PMSC,PMSC-energy consumption,and all-in-one selfpowered microsystems are elaborately overviewed to understand the emerging intelligent interaction ***,the key perspectives,challenges and opportunities of PMSCs for powering smart microelectronics are proposed in brief.

关键词： Micro-supercapacitors In-plane Functionalization Integrated microsystem Energy storage

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A Tri-Salt Composite Electrolyte with Temperature Switch Function for Intelligently Temperature-Controlled Lithium Batteries

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Energy & Environmental Materials 2024年第6期7卷 84-93页

作者： Ende Fu Huimin wang Yating Zhang Zhenxue xiao Xiu Zheng shuai Hao Xueping Gao Institute of New Energy Material Chemistry School of Materials Science and EngineeringNankai UniversityTianjin300350 China

The intense research of lithium-ion batteries has been motivated by their successful applications in mobile devices and electronic *** emerging of intelligent control in kinds of devices brings new requirements for battery *** high-energy lithium batteries are expected to respond or react under different environmental *** this work,a tri-salt composite electrolyte is designed with a temperature switch function for intelligently temperature-controlled lithium ***,the halide Li_(3)YBr_(6)together with LiTFSI and LiNO_(3)works as active fillers in a low-melting-point polymer matrix(polyethyleneglycol dimethyl ether(PEGDME)and polyethylene oxide(PEO)),which is further filled into the pre-lithiated alumina fiber *** 60°C,the composite electrolyte exists in the liquid state and fully contacts with the working electrodes on the liquid–solid interface,effectively minimizing the interfacial resistance and leading to high discharge capacity in the *** electrolyte is changed into a solid state below 30°C so that the ionic conductivity is significantly reduced and the interface resistance is increased dramatically on the solid–solid ***,by simply adjusting the temperature,the cell can be turned“ON”or“OFF”*** novel function of the composite electrolyte has enlightening significance in developing intelligently temperature-controlled lithium batteries.

关键词： composite electrolyte halide electrolyte low melting point solid-state battery temperature switch function

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Energy partitioning and environmental influence factors in different vegetation types in the GEWEX Asian Monsoon Experiment

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Frontiers of Earth Science 2014年第4期8卷 582-594页

作者： Fengshan LIU Fulu TAO Shenggong LI shuai ZHANG Dengpan xiao Meng wang Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Institute of Geographical Sciences Hebei Academy of Sciences Shijiazhuang 050011 China

Environmental influences upon energy balance in areas of different vegetation types （i.e., forest at Kog-Ma in Thailand and at Yakutsk in Russia, grassland at Amdo in Chinese Tibet and at Arvaikheer in Mongolia, and mixed farmland at Tak in Thailand） in the GEWEX Asian Monsoon Experiment were investigated. The sites we investigated are geographically and climatologically different; and consequently had quite large variations in temperature （T）, water vapor pressure deficit （VPD）, soil moisture （SM）, and precipitation （PPT）. During May- October, the net radiation flux （Rn）（in W·m^-2） was 406.21 at Tak, 365.57 at Kog-Ma, 390.97 at Amdo, 316.65 at Arvaikheer, and 287.10 at Yakutsk. During the growing period, the Rn partitioned into latent heat flux （2E/Rn） was greater than that partitioned into sensible heat flux （H/Rn） at Tak and at Kog-Ma. In contrast, 2E/Rn was lower than H/Rn at Arvaikheer, H/Rn was less than 2E/Rn between DOY 149 and DOY 270 at Amdo, and between DOY 165 and DOY 235 at Yakutsk. The R, partitioned into ground heat flux was generally less than 0.15. The short-wave albedo was 0.12, 0.18, and 0.20 at the forest, mixed land, and grass sites, respectively. At an hourly scale, energy partitions had no correlation with environmental factors, based on average summer half- hourly values. At a seasonal scale energy partitions were linearly correlated （usually p 〈 0.05） with T, VPD, and SM. The 2E/Rn increased with increases in SM, T, and VPD at forest areas. At mixed farmlands, ）λE/Rn generally had positive correlations with SM, T, and VPD, but was restrained at extremely high values of VPD and T. At grasslands, λE/Rn was enhanced with increases of SM and T, but was decreased with VPD.

关键词： energy balance vegetation type netradiation latent heat flux sensible heat flux short-wavealbedo GEWEX Asian Monsoon Experiment

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A new method for fluid identification and saturation calculation of low contrast tight sandstone reservoir

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Petroleum Science 2024年第5期21卷 3189-3201页

作者： shuai wang Ran-Hong Xie Guo-Wen Jin Jiang-Feng Guo Li-Zhi xiao State Key Laboratory of Petroleum Resources and Engineering China University of Petroleum(Beijing)Beijing102249China

The resistivity difference between oil and gas layers and the water layers in low contrast tight sandstone reservoirs is subtle. Fluid identification and saturation calculation based on conventional logging methods are facing challenges in such reservoirs. In this paper, a new method is proposed for fluid identification and saturation calculation in low contrast tight sandstone reservoirs. First, a model for calculating apparent formation water resistivity is constructed, which takes into account the influence of shale on the resistivity calculation and avoids apparent formation water resistivity abnormal *** on the distribution of the apparent formation water resistivity obtained by the new model, the water spectrum is determined for fluid identification in low contrast tight sandstone *** this, according to the average, standard deviation, and endpoints of the water spectrum, a new four-parameter model for calculating reservoir oil and gas saturation is built. The methods proposed in this paper are applied to the low contrast tight sandstone reservoirs in the Q4 formation of the X53 block and X70 block in the south of Songliao Basin, China. The results show that the water spectrum method can effectively distinguish oil-water layers and water layers in the study area. The standard deviation of the water spectrum in the oil-water layer is generally greater than that in the water layer. The new four-parameter model yields more accurate oil and gas saturation. These findings verify the effectiveness of the proposed methods.

关键词： Low contrast reservoirs Fluid identification Saturation calculation Water spectrum method Conventional logging

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Kinetic study of hydrocarbon generation of oil asphaltene from Lunnan area,Tabei uplift

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Chinese Science Bulletin 2004年第S1期49卷 83-88页

作者： JIA wanglu shuai Yanhua PENG Ping’an wang Feiyu xiao Zhongyao State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China Chinese University of Petroleum Beijing 102200China Tarim Oilfield Company PetroChinaKuerle 841000China

The molecular compositions and molecular carbon isotopic compositions of gas hydrocarbons produced in the hydrocarbon generation of oil asphaltene from Lunnnan area were investigated by pyrolysis of asphaltene sealed in gold tube in a limited system. The experimental results indicated that oil asphaltene from Lunnan area had relatively high generation potential of methane. However, the molecular compositions and molecular carbon isotopic compositions of gas hydrocarbons in the hydrocarbon generation of oil asphaltene exhibited different characteristics from that of gas hydrocarbons by primary cracking of kerogen and secondary cracking of oil. Based on kinetic simulation with paleo-geothermal data of oil reservoir, the methane produced by cracking of oil asphatene was characterized by relatively light carbon isotopic compositions. This result could not explain relatively heavy carbon isotopic compositions of natural gas from Lunnan area. Pyrolysis of kerogen from source rocks under very high temperature

关键词： oil asphaltene kinetics of hydrocarbon generation methane carbon isotopic compositions Lunnan area.

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Sex Differences in Electrophysiological Properties of Mouse Medial Preoptic Area Neurons Revealed by In Vitro Whole-cell Recordings

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Neuroscience Bulletin 2021年第2期37卷 166-182页

作者： Wen Zhang shuai-shuai Li Ying Han xiao-Hong Xu Institute of Neuroscience State Key Laboratory of NeuroscienceChinese Academy of Sciences Center for Excellence in Brain Science and Intelligence TechnologyShanghai 200031China University of the Chinese Academy of Sciences Beijing 100049China Shanghai Center for Brain Science and Brain-Inspired Intelligence Technology Shanghai 200031China

Despite extensive characterization of sex differences in the medial preoptic area(mPOA)of the hypothalamus,we know surprisingly little about whether or how male and female mPOA neurons differ electrophysiologically,especially in terms of neuronal firing and behavioral pattern *** this study,by performing whole-cell patch clamp recordings of the mPOA,we investigated the influences of sex,cell type,and gonadal hormones on the electrophysiological properties of mPOA ***,we uncovered significant sex differences in input resistance(male>female)and in the percentage of neurons that displayed post-inhibitory rebound(male>female).Furthermore,we found that the current mediated by the T-type Ca^(2+)channel(IT),which is known to underlie post-inhibitory rebound,was indeed larger in male mPOA ***,we have identified salient electrophysiological properties of mPOA neurons,namely IT and post-inhibitory rebound,that are male-biased and likely contribute to the sexually dimorphic display of behaviors.

关键词： Electrophysiological properties Sex differences mPOA Post-inhibitory rebound T-type calcium channels

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