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Carrying Capacity and Coupling coordination of Water and Land Resources Systems in Arid and Semi-arid Areas: A Case Study of Yulin City, China

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Chinese Geographical Science 2024年第5期34卷 931-950页

作者： ZHANG Qianxi CAO Zhi WANG Yongsheng HUANG Yijia Institute of Geographic Sciences and Natural Resources research Chinese Academy of SciencesBeijing 100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China

Quantitatively assessing the carrying capacity of water and land resources systems in arid and semi-arid areas is crucial for achieving the 2030 Sustainable development *** this work,taking Yulin City in China as a case study and employing the Criteria Importance Through Intercriteria Correlation(CRITIC)method,a modified model of coupling degree was developed to evaluate the car-rying capacity of water and land resources systems endowment and utilization,as well as their coupling coordination degree from 2013 to *** findings indicate that the water and land resources of Yulin are diminishing due to declines in agriculture,higher industrial water use,and wetland ***,reallocating domestic water for ecological sustainability and reducing sloping farmland can mitigate this trend of ***,as the coupling coordination between water and land resources system endowment in Yulin continuously improved,the coupling coordination between water and land resources system utilization first decreased and then in-creased with 2016 as the turning ***,the carrying capacity of water and land resources systems,the coupling coordination degree between water and land resources system endowment,and the coupling coordination degree between water and land resources system utilization in Yulin exhibited the same pattern of being higher in the six northern counties than in the six southern *** the water resources endowment is vital for the highly efficient use of water and land resources.

关键词： water and land resources systems carrying capacity coupling coordination human-earth system sustainable development Yulin City,China

Expanded Porphyrin Exhibiting Off-Centered Out-of-Plane coordination to Dysprosium

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CCS Chemistry 2024年第7期6卷 1731-1738页

作者： Dmitry I.Nazarov Jorge Labella Alexey V.Kuzmin Maxim A.Faraonov Evgenii N.Ivanov Salavat S.Khasanov Tomas Torres Mikhail K.Islyaikin Dmitri V.Konarev Federal research Center of Problems of Chemical Physics and Medicinal Chemistry RAS 142432 Chernogolovka Department of Organic Chemistry Universidad Autonoma de Madrid28049 Madrid Institute of Solid-State Physics RAS 142432 Chernogolovka research Institute of Macroheterocycles Ivanovo State University of Chemistry and Technology15300 Ivanovo G.A.Krestov Institute of Solution Chemistry of the Russian Academy of Sciences 153045 Ivanovo Institute for Advanced research in Chemical Sciences Universidad Autonoma de Madrid28049 Madrid IMDEA-Nanociencia 28049 Madrid

The complexation of high-spin lanthanides to porphyrinoids is a powerful strategy for the development of advanced molecular *** this context,the use of expanded porphyrinoids remains elusive since their coordination chemistry is challenging to ***,taking inspiration from on-surface chemistry,we explored the coordination of Dy^(3+)to a six-membered porphyrinoid,namely,the hemihexaphyrazine ***,we observed the selective formation of a mono-nuclear off-centered,out-of-plane H_(2)Hhp-Dy^(3+)complex when performing the complexation under reductive *** this reaction,the oxidation state of the macrocycle did not *** X-ray diffraction analysis,we found that the coordination number of Dy in this complex was *** macrocycle cocrystallized with decamethylcobaltocene(Cp_(2)^(*)Co)molecules,giving rise to a wellordered solid-state packing,governed byπ-π*** a result of this organization,a small magnetic coupling between the neighboring molecules was *** in all,this work provides key insights into the coordination of magnetically active metals with expanded porphyrinoids,thus motivating the development of advanced spintronic devices.

关键词： porphyrins dysprosium macrocycle coordination chemistry magnetism

Synthesis and Crystal Structure of [2-dapp]_2[Zn(dmit)_2] (2-dapp = 2-(4-Dimethylaminophenyl)ethyl-l-methyl- pyridinium, dmit = 1,3-Dithiole-2-thione-4,5-dithiolato)

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Chinese Journal of Structural Chemistry 2004年第11期23卷 1242-1245页

作者：杨玉华王素娜王威 FUN Hoong-Kun 游效曾白俊峰 coordination Chemistry Institute State Key Laboratory of Coordination Chemistry Nanjing University Nanjing 210093 China X-ray Crystallography Unit School of PhysicsUniversiti Sains Malaysia 11800 USM Penang Malaysia

The title compound [2-dapp]2[Zn(dmit)2] synthesized by the direct reaction of [Et4N]2[Zn(dmit)2] and [2-dapp]I crystallizes in monoclinic, space group P2l/c with a = 29.7436(6), b = l0.6266(3), c = l3.6161(4) ? b = 93.l16(l)? V = 4297.3 ?, Z = 4, Dc = 1.448 g/cm3, m = 1.091 mm-1 and F(000) = 1936. The structure was refined by fu1l-matrix 1east-squares methods to the final R = 0.075 and wR = 0.l16, revealing the zinc-bis (dmit) anions interact strongly with the planar cation, 2-dapp+, by the hydrogen bond C(l)H(lC)…S(7) (x, 3/2y, 1/2+z).

关键词： crystal structure zinc dapp dmit

Concept, configuration, and application of on-board nanogrids for use in electric vehicles

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Science China(Technological Sciences) 2024年第7期67卷 2053-2073页

作者： ZHAO Bing LI Yong WU Fang WAN JiangHu CAI JiuQing YANG HaiTao LIU Fang College of Electrical and Information Engineering Hunan UniversityChangsha 410082China Wuhan Second Ship Design and research Institute Wuhan 430000China School of Automation Central South UniversityChangsha 410083China

Against the backdrop of increasingly serious climate change, researchers are attempting to extend macroscale carbon reduction research to smaller scales. With the rapid development and widespread application of electric vehicles(EVs), an effective approach for carbon reduction based on EVs has the potential to be developed. To coordinate and manage the EV platform in diverse application scenarios, the concept of an on-board nanogrid(OBNG), in which a nanogrid is combined with the EV, is proposed and defined, and the characteristics summarized. A configuration that includes a physical layer with the on-board hardware system;an information layer for logical control, energy management, and communication coordination;and an application layer that can cope with different working environments is proposed. A detailed introduction to the basic architecture and management mode of each layer is provided along with information concerning the relevant technologies for coordinated operation. New ideas and approaches to improve the existing performance are proposed, and finally, combined with a background of smart and low-carbon cities, major application scenarios are envisioned.

关键词： electric vehicle nanogrid energy management hybrid energy storage power electronics converter

Flower-like tin oxide membranes with robust three-dimensional channels for efficient removal of iron ions from hydrogen peroxide

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Chinese Journal of Chemical Engineering 2024年第1期65卷 1-7页

作者： Risheng Shen Shilong Li Yuqing Sun Yuan Bai Jian Lu Wenheng Jing State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech UniversityNanjing 210009China National Energy Group Science and Technology research Institute Co. Ltd.Nanjing 210023China

Membrane technology has become the mainstream process for the production of electronic grade hydrogen peroxide(H_(2)O_(2)).But due to the oxidation degradation of the organic membranes(***)by the strong oxidative radicals(e.g.OH)generated via the activation of H_(2)O_(2)by iron ions(Fe^(3+)),the short effective lifetime of membranes remains a *** nano tin oxide(SnO_(2))has great potential for the removal of Fe^(3+)in strongly oxidative H_(2)O_(2)because of its ability to stabilize H2O_(2)and preferentially adsorb Fe^(3+).Herein,we have designed for the first time a flower-like robust SnO_(2)membrane on the ceramic support by in situ template-free one-step hydrothermal *** three-dimensional loose pore structure in the membrane built by interlacing SnO_(2)nanosheets endows the SnO_(2)membrane with a high specific surface area and abundant adsorption sites(AOH).Based on the coordination complexation and electrostatic attraction between the SnO_(2)surface and Fe^(3+),the membrane shows a high Fe3+removal efficiency(83%)and permeability(24 L·m^(-2)·h^(-1)·MPa^(-1))in H_(2)O_(2).This study provides an innovative and simple approach to designing robust SnO_(2)membranes for highly efficient removal of Fe^(3+)in harsh environments,such as strong oxidation conditions.

关键词： Hydrogen peroxide SnO_(2)membrane Adsorption Hydrothermal

Study on Coupling coordination between Sci-Tech Innovation and High-Quality Economic development in the Guangdong-Hong Kong- Macao Greater Bay Area

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Frontiers of Economics in China-Selected Publications from Chinese Universities 2022年第4期17卷 615-642页

作者： CHEN Zhangxi ZHUANSUN Guanhua College of Economics Jinan UniversityGuangzhou 510632China Economic development research Center on Guangdong-Hong Kong-Macao Greater Bay Area Jinan UniversityGuangzhou 510632China Center on Economic Social and Regional CooperationMacao Research InstituteJinan UniversityGuangzhou 510632China

Sci-tech innovation is an important measure for the Guangdong-Hong Kong-Macao Greater Bay Area to achieve high-quality economic ***,there is a coupling coordination relationship between sci-tech innovation and high-quality economic development,and coordinating the relationship between the two is beneficial to building the Guangdong-Hong Kong-Macao Greater Bay Area into an international innovation and technology hub and promoting high-quality economic *** present,the Guangdong-Hong Kong-Macao Greater Bay Area has seen a year-on-year increase in both the level of sci-tech innovation and the level of high-quality economic development,with a sound development *** coupling coordination degree between sci-tech innovation and high-quality economic development has steadily improved from a slightly uncoordinated stage to a primarily coordinated stage,but the overall degree of coordination is still not high,with some gaps from realizing the excellently coordinated *** the perspective of spatial distribution,the internal development of the Guangdong-Hong Kong-Macao Greater Bay Area is unbalanced,with obvious differences in development level and coupling coordination degree among *** convergence analysis shows that the differences in the coupling coordination degree among the cities in the Guangdong-Hong Kong-Macao Greater Bay Area have stabilized after narrowing during the study ***,the difference among the cities with higher coupling coordination degrees tends to widen in recent ***,necessary measures should be taken to promote the coordination between sci-tech innovation and high-quality economic development in the Guangdong-Hong Kong-Macao Greater Bay Area.

关键词： sci-tech innovation high-quality economic development coupling coordination Guangdong-Hong Kong-Macao Greater Bay Area

Largest 3d-4f 196-nuclear Gd_(158)Co_(38)clusters with excellent magnetic cooling

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Science China Chemistry 2022年第8期65卷 1577-1583页

作者： Ning-Fang Li Xi-Ming Luo Jia Wang Ji-Lei Wang Hua Mei You Song Yan Xu College of Chemical Engineering State Key Laboratory of Materials-Oriented Chemical EngineeringNanjing Tech UniversityNanjing 210009China coordination Chemistry Institute State Key Laboratory of Coordination ChemistryNanjing UniversityNanjing 210093China

It is a meaningful and challenging work for structural and synthetic chemists to isolate nano-sized high-nuclearity *** this work,two largest hetero-metallic nano-clusters Gd_(158)Co_(38) were obtained via the“multi-anions-template”*** from the reported giant hollow-nano-clusters,the Ln_(158) core in Gd_(158)Co_(38)(the protein-sized nano-clusters,ca.4.3 nm×3.6 nm×3.5 nm)has the highest Ln nuclear number,which is integrated by twelve halide ions(with the form of icosahedron)as key templates,while Co ions(as 3d metals)are located in its *** emergence indicates a novel structure form of non-open Ln-containing high-nuclearity clusters,and affords a consummate pattern to analyse and assemble the complex *** addition,Gd_(158)Co_(38)@Cl_(12)breaks the record magnetic entropy change of 3d-4f clusters with−∆S_(m)^(max)=46.95 J kg^(−1)K^(−1)at 7.0 T,2.0 K.

关键词： multi-anions template high-nuclearity 3d-4f cluster magnetic refrigeration

Conversion of CO2 to ethanol by using a metal-organic framework catalyst

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Science China Chemistry 2019年第10期62卷 1263-1264页

作者： Jing-Lin Zuo State Key Laboratory of coordination Chemistry School of Chemistry and Chemical EngineeringNanjing University

With the development of CO2 capture technology, CO2 can become an attractive C1 resource for synthesizing commodity chemicals. For example, direct conversion of CO2 to ethanol is of interest, but this process is also quite challenging, because it requires both the formation of one C–C bond and the retention of one C–O bond [1]. A combination of dual active sites, one for methanol formation and one for C–C coupling has been widely investigated for such a conversion, but an unbalanced rate in the two steps frequently leads to the formation of either methanol or long-chain hydrocarbons [2].

关键词： methanol ethanol catalyst

Synthesis and Crystal Structure of a Mo-S Cluster Compound Coordinated by Isonicotinate

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Chinese Journal of Structural Chemistry 2007年第9期26卷 1043-1046页

作者：覃业燕李兆基康遥张健程建开姚元根 State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter The Chinese Academy of Sciences State Key Laboratory of coordination Chemistry Nanjing University Nanjing 210093 China

A cluster compound, Mo3S4（DTP）3（IN）（Py）·EtOH I （DTP = diethyl dithiophosphate, IN = isonicotinate） has been rationally synthesized and characterized by single-crystal X-ray diffraction. The crystal belongs to the triclinic system, space group P1 with a = 13.6345（2）, b = 13.7805（2）, c = 14.5400（1）A, α = 107.078（1）, β = 113.380（1）, γ = 96.310（1）°, C25H45Mo3- N2O9P3S10, Mr = 1218.96, V = 2315.75（5） A^3, Z = 2, Dc = 1.748 g/cm^3, μ = 1.399, F（000） = 1224, R = 0.0425 and wR = 0.1144 for 6335 observed reflections （I 〉 2σ（I））. 31^P NMR spectrum has been measured with the resonance 110.050 and 108.783 （2：1）.

关键词： molybdenum cluster synthesis crystal structure