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Synthesis and Structure of a Novel Macrocyclic Complex [Cd_2(phen)_4(phth)_2]·4H_2O

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Chinese Journal of Structural Chemistry 2005年第11期24卷 1298-1301页

作者： SUN ya-Guang GAO En-Jun WEI De-Zhou LIU Yi-nan Laboratory of Coordination Chemistry Shenyang Instituteof Chemical Technology Shenyang Liaoning 110142 China School of Resource ＆ Civil Engineering Northeastern University Shenyang Liaoning 110004 China

A novel complex [Cd2（phen）4（phth）2]·4H2O has been synthesized by the reaction of Hzphth（phthalic acid） and phen（1,10-phenanthroline） with Cd（Ⅱ） in ethanol-water solution. X-ray crystal structure analysis shows it crystallizes in triclinic, space group PI- with a = 10.619（3）, b = 12.560（4）, c = 12.651（4） A, a = 98.775（5）, β = 109.035（5）,γ = 113-576（5）°, C32H24CdN4O6, Mr= 672.95, V = 1381.7（7）A^3, Rint = 0.0358, Z = 2, Dc= 1.618 g/cm^3,μ = 0.845 mm^-1, -6 ≤h≤13, -15 ≤k ≤13, -15 ≤l≤14, F（000） = 680, S = 1.038, R = 0.0480 and wR = 0.0849 for 3992 observed reflections （1 〉 2σ（Ⅰ））. Phth bridges Cd（Ⅱ） to form a macrocyclic compound, and a 2D supramolecular motif is formed through hydrogen bonds and π-π interaction.

关键词： cadmium complex crystal structure hydrogen bonding π-π interaction

Synthesis and insecticidal evaluation of phytoalexin phenalenones derivatives

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Chinese Chemical Letters 2017年第6期28卷 1228-1231页

作者： ya-nan Zhang Yi-An Feng Zhong Li Xu-Sheng Shao Shanghai Key Laboratory of Chemical Biology School of Pharmacy East China University of Science and Technology Shanghai 20037 China

Phenalenone is a kind of defensive compound biosynthesized inside plants in response to the outside attack such as fungus and nematodes.A set of derivatives encompassing structural modifications on the privileged phenalenone scaffold were synthesized through introduction of phenyl and hydroxy!substitutes at 9-positon and 2-position and assessed their insecticidal activities against armyworm（Mythimna separata Walker） and cowpea aphids[Aphis craccivora）.No obvious insecticidal activities of the synthesized compounds were observed against *** of the 9-phenyl and 2-hydroxy substituted phenalenone analogues showed potential activities against cowpea aphids with 33%-41%mortality at 500 mg/L.

关键词： Phenalenones derivatives Insecticidal activities Structural modifications

Effect of maize sowing area changes on agricultural water consumption from 2000 to 2010 in the West Liaohe Plain, China

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Journal of Integrative Agriculture 2016年第6期15卷 1407-1416页

作者： yaNG Ling yaNG yan-zhao FENG Zhi-ming ZHENG ya-nan Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 P.R. China University of Chinese Academy of Sciences Beijing 100049 P.R. China

The West Liaohe Plain is located in the eastern Inner Mongolia, known as the golden maize belt in China, where maize acreage has continued to rise in recent years. Water is the main limiting factor for maize production in the region, therefore, this study calculated the effect of maize sowing area changes on agricultural water consumption in the West Liaohe Plain in 2000, 2005 and 2010, based on remote sensing and meteorological data. Maize remote sensing classification was con- structed based on moderate-resolution imaging spectroradiometer, normalized difference vegatation index （MODIS NDVI） data. Then the maize sown area and water requirement and irrigation water resources were investigated. Finally, the effect of the maize sowing area changes on agricultural water consumption in the West Liaohe Plain was systematically analyzed in 2000, 2005, and 2010. The results showed that maize sown areas rose from 2000 to 2010 and were concentrated in the center of the West Liaohe Plain. Average per unit maize water deficit amount also increased in an uneven distribution, increasing from the south, east and north to the center and west of the West Liaohe Plain. The per unit area maize water deficit increased from 2000 to 2010, and reached 266 mm in 2000, 272 mm in 2005 and 273 mm in 2010, respectively. and the study concluded that water deficit during the whole growth period of maize in the West Liaohe Plain was defined by a single peak curve. The maize water requirements increased with maize sowing area changes from 2000 to 2010, and the maize water requirements increased from 0.89 billion m3 in 2000 to 1.19 billion m3 in 2005, and 1.21 billion m3 in 2010.

关键词： maize maize water requirement irrigation water resources West Liaohe Plain

Inspired by novel radiopharmaceuticals:Rush hour of nuclear medicine

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Chinese Journal of Cancer Research 2023年第5期35卷 470-482页

作者： yang Liu ya-nan Ren yan Cui Song Liu Zhi yang Hua Zhu nan Li Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education/Beijing) NMPA Key Laboratory for Research and Evaluation of Radiopharmaceuticals(National Medical Products Administration)Department of Nuclear MedicinePeking University Cancer Hospital&InstituteBeijing 100142China State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers Beijing Key Laboratory of Carcinogenesis and Translational ResearchNMPA Key Laboratory for Research and Evaluation of Radiopharmaceuticals(National Medical Products Administration)Department of Nuclear MedicinePeking University Cancer Hospital&InstituteBeijing 100142China

Nuclear medicine plays an irreplaceable role in the diagnosis and treatment of *** are important components of nuclear *** the radiopharmaceuticals approved by the Food and Drug Administration(FDA),radio-tracers targeting prostate-specific membrane antigen(PSMA)and somatostatin receptor(SSTR)have held essential positions in the diagnosis and treatment of prostate cancers and neuroendocrine neoplasms,*** recent years,FDA-approved serials of immune-therapy and targeted therapy drugs targeting programmed death 1(PD-1)/programmed death ligand 1(PD-L1),human epidermal growth factor receptor 2(HER2),and nectin cell adhesion molecule 4(Nectin 4).How to screen patients suitable for these treatments and monitor the therapy?Nuclear medicine with specific radiopharmaceuticals can visualize the expression level of those targets in systemic lesions and evaluate the efficacy of *** addition to radiopharmaceuticals,imaging equipment is also a key step for nuclear *** equipment including total-body positron emission tomography/computed tomography(PET/CT)and positron emission tomography/magnetic resonance imaging(PET/MRI)has been developed,which contribute to the diagnosis and treatment of tumors,as well as the development of new ***,we conclude most recently advances of radiopharmaceuticals in nuclear medicine,and they substantially increase the“arsenal”of clinicians for tumor therapy.

关键词： Nuclear medicine radiopharmaceuticals neoplasms

High-voltage LiCoO_(2) cathodes for high-energy-density lithiumion battery

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Rare Metals 2022年第12期41卷 3946-3956页

作者： Jing-Chao Zhang Zhe-Dong Liu Cui-Hua Zeng Jia-Wei Luo Yi-Da Deng Xiao-ya Cui ya-nan Chen School of Materials Science and Engineering Tianjin UniversityTianjin 300072China Beijing Frontier Research Center for Biological Structures Tsinghua UniversityBeijing 100084China Ministry of Education Key Laboratory of Protein Sciences Beijing Advanced Innovation Center for Structural BiologySchool of Life SciencesTsinghua UniversityBeijing 100084China

As the earliest commercial cathode material for lithium-ion batteries,lithium cobalt oxide(LiCoO_(2)) shows various advantages,including high theoretical capacity,excellent rate capability,compressed electrode density,*** now,it still plays an important role in the lithium-ion battery *** to these advantages,further increasing the charging cutoff voltage of LiCoO_(2)to guarantee higher energy density is an irresistible development trend of LiCoO_(2)cathode materials in the ***,using high charging cutoff voltage may induce a lot of negative effects,especially the rapid decay of cycle *** are mainly caused by rapid destruction of crystal structure and aggravation of interface side reaction at high voltage during the ***,how to maintain a stable crystal structure of LiCoO_(2)to ensure the excellent long cycle performance at high voltage is a hot research issue in the further application of LiCoO_(2).In this review,we summarized the failure causes and extensive solutions of LiCoO_(2)at high voltage and promoted some new modification ***,the development trend of solving the failure problem of high-voltage LiCoO_(2)in the future such as defect engineering and high-temperature shock technique is also discussed.

关键词： Lithium-ion battery Lithium cobalt oxide(LiCoO_(2))cathode High voltage Cycle performance Crystal structure

Finite element simulation of real cavity closure in cast Ti6Al4V alloy during hot isostatic pressing

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China Foundry 2022年第1期19卷 55-62页

作者： Qian Xu Wen Li ya-jun Yin Jian-xin Zhou Hai nan State Key Laboratory of Materials Processing and Die and Mould Technology Huazhong University of Science and TechnologyWuhan 430074China AECC Beijing Institute of Aeronautical Materials Beijing 100095China

The healing behavior of shrinkage cavity inside the cast Ti6Al4V alloy during hot isostatic pressing(HIP)was investigated experimentally by interrupted hot isostatic pressing *** X-ray micro computed tomography was used to record the morphology changes before and after hot isostatic *** two-dimensional geometry obtained by the microCT scan was used in simulation to study the evolution of the real shrinkage cavity during hot isostatic *** cavities,shrinkage porosity and small gas pores can be effectively eliminated under proper HIP *** two-dimensional morphology in the simulation results agrees well with the experimental *** study reveals that plastic deformation,creep and diffusion are the main mechanisms of cavity closure during hot isostatic *** addition,the simplified elliptical pores with aspect ratios at different positions were used to replace the real pores to further study the factors affecting the position of dimples after HIP by *** is found that the position of the dimples mainly depends on the aspect ratio of the elliptical pore and the distance between the pore surface and the external surface of the geometric model.

关键词： cast Ti6Al4V alloy hot isostatic pressing shrinkage cavity simulation closure behavior

Income inequality and growth from functional orientation and spatial policy:Case study of Tibet,China

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Journal of Mountain Science 2021年第1期18卷 178-193页

作者： ZHAO yan-nan FAN Jie WANG ya-fei LIANG Bo ZHANG Lu Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesChaoyang DistrictBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Beijing Technology and Business University School of International Economics and ManagementBeijing 100048China

Economic inequality and poverty are *** attention has been paid to these issues in recent *** on economic inequality have been characterized by geographical disparities and a lack of consideration of functional *** one of the most typical and featured mountainous areas in Western China,Tibet demonstrates both the necessity and urgency of conducting studies on income inequality and growth *** paper proposes to address these problems by exploring the temporal and geographical variations in income inequality in Tibet,thereby revealing the differences in functional *** Markov chains and panel regression analysis were applied to identify the spatial-temporal dynamics of income *** results of this study show that(1)the overall income inequality in Tibet shows an expanding trend in the period 2005–2010 and a converging trend in the period 2010–2015,and there is a large disparity in income inequality between functional zones;(2)Tibetan farmers and herdsmen may face great difficulties in achieving substantial growth in the near future;(3)frontier counties,cultivated land,and grassland areas have negative impacts on income growth,while cordyceps counties,GDP per capita,agricultural product proportion,transfer payments,the ratio of nonagricultural employment to the total employment,the length of the average schooling year,and the slaughter rate of cattle and sheep have positive impacts;and(4)functional orientation has made great differences to income inequality and its *** light of these results,evidence-based policies have been formulated to boost average household income and narrow income inequality in Tibet.

关键词： Income inequality Markov chains Mechanism Functionalorientation Transfer payment Tibet China

Recent progress of transition metal-based biomass-derived carbon composites for supercapacitor

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Rare Metals 2023年第3期42卷 769-796页

作者： ya-nan Zhang Chen-yang Su Jun-Lei Chen Wen-Huan Huang Rui Lou Shaanxi Key Laboratory of Chemical Additives for Industry College of Chemistry and Chemical EngineeringShaanxi University of Science and TechnologyXi'an 710021China

Supercapacitors(SCs)have been considered as the most promising energy storage device due to high power density,long cycle life,and fast energy storage and efficient *** excellent electrode materials of SCs generally have based on large porous structure,excellent conductivity,and heteroatom doping for charge *** various electrode materials,biomass-derived carbon materials have received widespread attention owing to excellent performances,environmental friendliness,lowcost and ***,composites materials based on biomass-derived carbon and transition metalbased material can obtain more advantages of structural and performance than single component,which opens up a new way for the fabrication of high-performance SC electrode ***,this review aims to the recent progress on the design and fabrication of biomassderived carbons/transition metal-based composites in supercapacitor ***,the development trends and challenges of biomass-derived electrode materials have been discussed and prospected.

关键词： Biomass-derived carbon Transition metal composites Supercapacitor(SC) Electrochemical

Combination of Quercetin, Hirudin and Cinnamaldehyde Promotes Schwann Cell Differentiation and Myelination against High Glucose by Inhibiting ERK Signaling Pathway

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Chinese Journal of Integrative Medicine 2020年第8期26卷 591-598页

作者： LIU Di LIANG Xiao-chun SUN Ying WU ya-nan ZHANG Hong Department of Traditional Chinese Medicine Peking Union Medical College HospitalPeking Union Medical College and Chinese Academy of Medical SciencesBeijing 100730China Department of Cell Resource Center Institute of Basic Medical SciencePeking Union Medical College and Chinese Academy of Medical SciencesBeijing 100730China the Department of Nephrology Dongzhimen HospitalBeijing University of Chinese MedicineBeijing 100700China

Objective:To investigate the therapeutic and synergistic effects of QHC(combination of quercetin(Q),hirudin(H)and cinnamaldehyd(C))on Schwann cell differentiation and myelination against high glucose(HG)induced ***:Primary-culture Schwann cells exposed to HG(50 mmol/L)for 72 h and Schwann cell–dorsal root ganglion(DRG)neuron cocultures exposed to HG(50 mmol/L)for 7 days were employed as in vitro model of diabetic *** cells were randomly divided into 10 groups:control(CON,25 mmol/L glucose),HG(50 mmol/L glucose),HG plus 10μmol/L quercetin(Q),HG plus 0.04 IU/mL hirudin(H),HG plus 100 nmol/L cinnamaldehyd(C),HG plus 10μmol/L quercetin and 0.04 IU/mL hirudin(QH),HG plus 10μmol/L quercetin and 50 nmol/L cinnamaldehyd(QC),HG plus 0.04 IU/mL hirudin and 50 nmol/L cinnamaldehyd(HC),HG plus 10μmol/L quercetin,0.04 IU/mL hirudin and 50 nmol/L cinnamaldehyd(QHC)or 10μmol/L *** differentiation was evaluated by periaxin immunofluorescence *** protein expression levels of myelin protein zero(P0),myelin basic protein(MBP),myelin-associated glycoprotein(MAG),extracellular signal-regulated kinase(ERK),p-ERK,p-c-Jun,c-Jun,notch intracellular domain(NICD)and the mRNA expression levels of P0,MBP,MAG,Krox-20,Notch1 and Jagged1 were detected by Western blotting and real-time quantitative PCR *** secretion of ciliary neurotrophic factor(CNTF)was determined by enzyme-linked immunosorbent assay(ELISA).The number and length of the myelin segments were evaluated by MBP immunofluorescence *** expression and the location of p-ERK in cocultures were detected by MAG and p-ERK immunofluorescence double ***:Co-treatment with Q,C,H and their combination promoted Schwann cell differentiation,increased CNTF secretion,up-regulated the protein and m RNA expressions of myelin,and increased the number and length of the myelin segments(P<0.01 or P<0.05).In particular,the combination therapy of Q,H and C was superior to the respective mono

关键词： diabetic peripheral neuropathy extracellular signal-regulated kinase pathway Schwann cells myelination Chinese medicine synergistic effect