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Electrochemical Formation of AI-Li Alloys by Codeposition of AI and Li from LiCI-KCI-AIF3 Melts at 853 K

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Chemical Research in Chinese Universities 2013年第2期29卷 324-328页

作者： SUN Yi ZHANG mi-lin HAN wei LI Mei YANG Yu-sheng Key Laboratory of Superlight Materials and Surface Technology Ministry of Education College of Materials Science and Chemical Engineering Harbin Engineering University Harbin 150001 P. R. China

The electrochemical behavior of AI（III） ions was studied in molten LiC1-KC1 melts on a molybdenum electrode. Cyclic voltammetry, chronopotentiometry and chronoamperometry were used to explore the deposition mechanism of A1 and Li. Cyclic voltammetry expriment indicates that under potential deposition（UPD） of lithium on pre-deposited aluminium led to the formation of liquid A1-Li alloys at 853 K. The diffusion coefficient of AI（III） ions at 853 K in LiC1-KC1-AIF3（I%, mass fraction） melts was determined to be （2.79~0.05）x 10_5 cm2/s. Chronopotentio- grams and chronoamperograms demonstrate that the codeposition of AI（III） and Li（I） ions formed A1-Li alloys at ca- thodic current densities higher than -0.28 A/cm2 or cathodic potentials more negative than -2.20 V. X-Ray diffrac- tion（XRD） pattern indicates that A1-Li alloys with different phases formed via galvanostatic electrolysis. Inductively coupled plasma（ICP） analyses of the samples obtained by electrolysis show that lithium and aluminium contents of A1-Li alloys could be controlled by A1F3 concentration and current intensity.

关键词： Electrochemistry A1-Li alloy Codeposition Cyclic voltammetry

Inferring decelerated land subsidence and groundwater storage dynamics in Tianjin–Langfang using Sentinel-1 InSAR

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International Journal of Digital Earth 2022年第1期15卷 1526-1546页

作者： Xuguo Shi Tongtong Zhu wei Tang mi Jiang Houjun Jiang Chen Yang wei Zhan Zutao ming Shaocheng Zhang School of Geography and Information Engineering China University of GeosciencesWuhanPeople’s Republic of China College of Geoscience and Surveying Engineering China University of Mining and TechnologyBeijingPeople’s Republic of China School of Geospatial Engineering and Science Sun Yat-Sen UniversityGuangzhouPeople’s Republic of China School of Civil Engineering Anhui Jianzhu UniversityHefeiPeople’s Republic of China Institute of Karst Geology CAGS/Key Laboratory of Karst DynamicsMNR&GZARGuilinPeople’s Republic of China The First Monitoring and Application Center China Earthquake AdministrationTianjinPeople’s Republic of China

To meet the growing demand for socioeconomic development,a large amount of groundwater is extracted from confined aquifers *** North China Plain has experienced considerable groundwater depletion and subsidence during the past six *** this study,we use Sentinel-1A/B SAR images from 2015 to 2020 to map the ground subsidence of the Tianjin–Langfang *** subsiding zones centered at Guangyang,Wuqing–Bazhou,and Jinghai are identified with maximum subsidence rates of 98.1,121.8,and 104.7 mm/*** and long-term signals are separated from time series subsidence and hydraulic measurements using continuous wavelet transform to retrieve aquifer *** long-term subsidence,which fits well with an exponential decaying model,remarkably slows down in our study *** elastic skeletal storage coefficients range between 0.52×10−3 and 9.66×10−*** then retrieve the spatial–temporal variations of total groundwater storage,recoverable groundwater storage,and irreversible groundwater *** storage depletion rates are apparently reducing,which benefits from the operation of the South-to-North Water Transfer Project and local groundwater management practices.

关键词： North China Plain aquifer parameter South-to-North water transfer project groundwater storage subsidence

Evaluation of maize root growth and genome-wide association studies of root traits in response to low nitrogen supply at seedling emergence

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The Crop Journal 2021年第4期9卷 794-804页

作者： Xichao Sun wei Ren Peng Wang Fanjun Chen Lixing Yuan Qingchun Pan Guohua mi College of Resources and Environmental Sciences National Academy of Agriculture Green DevelopmentKey Laboratory of Plant-Soil InteractionsMinistry of EducationChina Agricultural UniversityBeijing 100193China Agro-Environmental Protection Institute Ministry of Agriculture and Rural AffairsTianjin 300191China

Nitrogen(N) deficiency is one of the main factors limiting maize(Zea mays L.) productivity. Genetic improvement of root traits could improve nitrogen use efficiency. An association panel of 461 maize inbred lines was assayed for root growth at seedling emergence under high-nitrate(HN, 5 mmol L^(-1))and low-nitrate(LN, 0.05 mmol L^(-1)) conditions. Twenty-one root traits and three shoot traits were measured. Under LN conditions, the root-to-shoot ratio, root dry weight, total root length, axial root length,and lateral root length on the primary root were all increased. Under LN conditions, the heritability of the plant traits ranged from 0.43 to 0.82, a range much wider than that of 0.27 to 0.55 observed under HN conditions. The panel was genotyped with 542,796 high-density single-nucleotide polymorphism(SNP) markers. Totally 328 significant SNP markers were identified using either mixed linear model(MLM) or general linear model analysis, with 34 detected by both methods. In the 100-kb intervals flanking these SNP markers, four candidate genes were identified. Under LN conditions, the protoporphyrinogen IX oxidase 2 gene was associated with total root surface area and the DELLA protein-encoding gene was associated with the length of the visible lateral root zone of the primary root. Under HN conditions, a histone deacetylase gene was associated with plant height. Under both LN and HN conditions, the gene encoding MA3 domain-containing protein was associated with the first whorl crown root number. The phenotypic and genetic information from this study may be exploited for genetic improvement of root traits aimed at increasing NUE in maize.

关键词： Genome-wide association study(GWAS) Nitrogen Maize Root

All-optical attosecond time domain interferometry

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National Science Review 2021年第10期8卷 15-22页

作者： Zhen Yang wei Cao Yunlong Mo Huiyao Xu Kang mi Pengfei Lan Qingbin Zhang Peixiang Lu Wuhan National Laboratory for Optoelectronics and School of Physics Huazhong University of Science and Technology Hubei Key Laboratory of Optical Information and Pattern Recognition Wuhan Institute of Technology CAS Center for Excellence in Ultra-intense Laser Science

Interferometry, a key technique in modern precision measurements, has been used for length measurement in engineering metrology and astronomy. An analogous time-domain interferometric technique would represent a significant complement to spatial domain applications and require the manipulation of interference on extreme time and energy scales. Here, we report an all-optical interferometer using laser-driven high order harmonics as attosecond temporal slits. By controlling the phase of the temporal slits with an external field, a time domain interferometer that preserves both attosecond temporal resolution and hundreds of me V energy resolution is implemented. We apply this exceptional temporal resolution to reconstruct the waveform of an arbitrarily polarized optical pulse, and utilize the provided energy resolution to interrogate the abnormal character of the transition dipole near the Cooper minimum in argon. This novel attosecond interferometry paves the way for high precision measurements in the time-energy domain using all-optical approaches.

关键词： interferometry attosecond all-optical precision measurement

mixed Carbonate-Siliciclastic Deposits in a Channel Complex in the Northern South China Sea

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Journal of Earth Science 2018年第3期29卷 707-720页

作者： Benjun Ma Shiguo Wu Lijun mi Thomas Lüdmann Jinwei Gao wei Gao Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of SciencesQingdao 266071China Key Laboratory of Marine Georesources and Prospecting Institute of Deep-sea Science and Engineering Chinese Academy of SciencesSanya 572000China University of Chinese Academy of Sciences Beijing 100049China Functional Laboratory for Marine Geology and Environment Qingdao National Laboratory for Marine Science and TechnologyQingdao 266061China Shenzhen Branch China National Offshore Oil CorporationGuangzhou 510420China Institute of Geology Centre for Earth System Research and SustainabilityUniversity of HamburgHamburg 20146Germany

New high-resolution 3D seismic data image a submarine channel complex in the northern slope of the South China Sea. The channel complex stretches hundreds of kilometers across the slope and flows into the deepsea from the siliciclastic shelf margin, linking neritic environment to the pelagic plain. The evolution of the channel complex developed two sedimentary stages, stage Ⅰ （19.1-18.5 Ma） and stage Ⅱ （18.5-17.5 Ma）, separated by erosional surfaces. In the first stage, the complex was rifled with pure siliciclastic sediments, forming thick-massive sandstone intercalated by thin layers of mudstone. During the stage Ⅱ, the channel complex was deposited five carbonate-siliciclastic cycles. The unexpected channel-fifl carbonate deposits present allochthonous characteristics, suggesting the siliciclastic channel was surprisingly used to transport carbonate sediment from the adjacent neritic carbonate platform. By analyzing the periodical carbonate sedimentary process in the siliciclastic channel complex, we infer that it was related to the in situ carbonate production of the neritic carbonate platform and was most likely to be controlled by the relative sea-level changes. Unlike line-source carbonate slope aprons or smafl-sized carbonate channels, the large-sized siliciclastic channel complex links directly neritic carbonate platform to deepwater basin and can transport large volumes of neritic carbonates to the pelagic environment in a short period. The new findings help to estimate the contributions of neritie siliciclastic shelf and carbonate platform to deepwater slope more accurately. This study suggests that channel systems are more complex than expected and have significant implications on the conceptual models describing the deepwater sedimentary theory.

关键词： submarine channels mixed carbonate-siliciclastic deposits allochthonous carbonate sediment flux sedimentology South China Sea.

Interfacial solar evaporator for brine treatment: the importance of resilience to high salinity

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National Science Review 2021年第10期8卷 8-9页

作者： Baoxia mi Department of Civil and Environmental Engineering University of California

As reverse osmosis(RO) technologies have improved, desalination has become a viable approach to addressing water scarcity, by treating various alternative water resources such as seawater, brackish water and wastewater [1]. However,the management of brines has emerged as one of the key issues preventing desalination from being further adopted, especially in locations where use of ocean outfalls or deep well injection is *** advance desalination in these places,

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Two Alkali Metal Germanophosphates Na_(3)[Ge(OH)(PO_(4))_(2)]·2H_(2)O and Li_(2)Na[GeO(HPO_(4))(PO_(4))]:Crystal Structures and Thermal Stability

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Chinese Journal of Structural Chemistry 2021年第1期40卷 114-124,5页

作者： YANG dong ZHUANG Rong-Chuan mi Jin-Xiao HUANG Ya-Xi Fujian Key Laboratory of Advanced Materials(Xiamen University) Department of Materials Science and EngineeringCollege of MaterialsXiamen UniversityXiamen 361005China State Key Laboratory of Comprehensive Utilization of Low-grade Refractory Gold Ores Shanghang 364200China

Two new alkali metal germanophosphates,namely,Na_(3)[Ge(OH)(PO_(4))_(2)]·2 H2 O and Li_(2)Na[GeO(HPO_(4))(PO_(4))],have been prepared by solvothermal method,and their crystal structures were determined by single-crystal X-ray *** title two compounds crystalize in the same orthorhombic space group Pbcm(No.57)and feature similar chain-like structure which is built from zig-zag GeO_(6) octahedral thread loop branched by PO_(4) *** Na_(3)[Ge(OH)(PO_(4))_(2)]·2 H_(2)O,a=10.1650(9),b=13.1975(12),c=6.9751(7)Å,V=935.73(15)Å^(3),Z=4,R=0.0356 and wR=0.1109;and for Li_(2)Na[GeO(HPO_(4))(PO_(4))],a=6.9855(5),b=14.5809(18),c=6.6620(5)Å,V=678.56(11)Å^(3),Z=4,R=0.0286,and w R=*** partial substitution of Na ions by Li ions not only significantly influences the total structural features and the water molecule contents,but also impacts on their thermal ***_(2)Na[GeO(HPO_(4))(PO_(4))]is thermally stable up to 400℃,whereas only 150℃ for Na_(3)[Ge(OH)(PO_(4))_(2)]·2 H2 O.

关键词： alkali metal chain-like structure germanophosphates thermal stability

Electrochemical formation and phase control of Mg-Li alloys

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Chinese Chemical Letters 2007年第9期18卷 1124-1128页

作者： Zhang, mi Lin Chen, Zeng Han, wei Lv, Yan Zhuo Wang, Jun Harbin Engn Univ Key Lab Superlight Mat & Surface Technol Minist Educ Harbin 150001 Peoples R China

The electrochemical formation of Mg-Li alloys was investigated in a molten LiCl-KCl (58-42 mol%) eutectic melt at 723 K. The cyclic voltammogram. for a Mo electrode showed that the electroreduction of Li+ proceeds in a single step and the deposition potential of Li metal was -2.40 V (vs. Ag/AgCl). For Mg electrode, the electroreduction of Li+ takes place at less cathodic potential than that at the Mo electrode which was caused by the formation of Mg-Li alloys. Phase of the deposited Mg-Li alloys could be controlled by the electrolysis potential, and the samples were characterized by X-ray diffraction and scanning electron microscopy. The results showed that alpha-Mg and beta-Li phases were obtained at -2.35 and -2.55 V, respectively. (c) 2007 mi Lin Zhang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： LiCl-KCl molten salt electrodeposition Mg-Li alloy

Latest assessment methods for mitochondrial homeostasis in cognitive diseases

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Neural Regeneration Research 2024年第4期19卷 754-768页

作者： wei You Yue Li Kaixi Liu Xinning mi Yitong Li Xiangyang Guo Zhengqian Li Department of Anesthesiology Peking University Third Hospital Peking University Third Clinical Medical College Beijing Center of Quality Control and Improvement on Clinical Anesthesia Anesthesia and Perioperative Medicine Branch of China International Exchange and Promotive Association for Medical and Health Care(CPAM)

mitochondria play an essential role in neural function,such as supporting normal energy metabolism,regulating reactive oxygen species,buffering physiological calcium loads,and maintaining the balance of morphology,subcellular distribution,and overall health through mitochondrial *** the recent technological advances in the assessment of mitochondrial structure and functions,mitochondrial dysfunction has been regarded as the early and key pathophysiological mechanism of cognitive disorders such as Alzheimer’s disease,Parkinson’s disease,Huntington’s disease,mild cognitive impairment,and postoperative cognitive *** review will focus on the recent advances in mitochondrial medicine and research methodology in the field of cognitive sciences,from the perspectives of energy metabolism,oxidative stress,calcium homeostasis,and mitochondrial dynamics(including fission-fusion,transport,and mitophagy).

关键词： cognitive disorders mitochondrial dysfunction mitochondrial energy metabolism mitochondrial dynamics mitochondrial transport mitophagy mitochondrial biogenesis oxidative stress calcium homeostasis