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Synthesis,Structure and Luminescence of Zn_(4.5)Cu_3 Heteronuclear Coordination Polymer Comprising Macrocyclic Oxamide and 5-Sulfosalicylic Ion

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Chemical Research in Chinese Universities 2010年第4期26卷 501-504页

作者： SUN Ya-qiu WANG Jing FAN lan-lan GAO dong-zhao Tianjin Key Laboratory of Structure and Performance for Functional Molecule College of Chemistry and Life Science Tianjin Normal University Tianjin 300387 P. R. China

The complex [Zn4.5（SSA）3（CuL）3（H2O）6]n was synthesized and structurally determined, where SSA is fully deprotonated 5-sulfosalicylic acid（CuL, H2L=2,3-dioxo-5,6,14,15-dibenzo-1,4,8,12-tetraazacyclo-pentadeca- 7,13-dien）. The title complex crystallized in the triclinic system with space group P1^-, a=1.19788（17） nm, b=1.4253（2） nm, c=2.2890（4） nm, α=90.211（2）°, ,β=93.076（2）°, γ=90.600（2）°. The complex displayed a 1D ladderlike chain. All these 1D chains were further interlinked via hydrogen bonds, resulting in a 2D architecture. The luminescent property of the compound was also discussed.

关键词： Heteronuclear complex Macrocyclic oxamide Luminescence

Tunable Thermal Conductivity of Ferroelectric P(VDF-TrFE)Nanofibers via Molecular Bond Modulation

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Chinese Physics Letters 2022年第12期39卷 50-56页

作者： lan dong Bohai Liu Yuanyuan Wang Xiangfan Xu School of Energy and Materials Shanghai Polytechnic UniversityShanghai 201209China Shanghai Engineering Research Center of Advanced Thermal Functional Materials Shanghai Polytechnic UniversityShanghai 201209China Center for Phononics and Thermal Energy Science China-EU Joint Center for NanophononicsSchool of Physics Science and EngineeringTongji UniversityShanghai 200092China

Dipoles in ferroelectric copolymer P(VDF-Tr FE)can be driven by electric field,introducing phonon transport modulations via polarizing molecular *** thermal conductivity in single 75/25 P(VDF-Tr FE)nanofibers is found to increase with electric field related phonon renormalization,resulted from change in vibrational assignment excited by polarization *** is evidenced by a direct change of bond energy and bond length in 75/25P(VDF-Tr FE)nanofibers from Raman characterization under polarization electric *** experimental results provide further intuitive evidences that the size of ferroelectric polymers could directly affect the ferroelectricity from the size-dependent thermal transport measurement.

关键词： fibers ferroelectric polarization

Comparative study of galectin-3 and B-type natriuretic peptide as biomarkers for the diagnosis of heart failure

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Journal of Geriatric Cardiology 2014年第1期11卷 79-82页

作者： Qiu-Sheng YIN Bing SHI lan dong Lei BI Department of Geriatric Cardiology General Hospital of Be~jing Command of PLA Beijing 100700 China

Background Heart failure （HF） is a common disease with complex pathophysiological causes. The diagnosis of HF commonly relies on comprehensive analyses of medical history and symptoms, and results from echocardiography and biochemical tests. Galectin-3, a rela-tively new biomarker in HF, was approved by the US Food and Drug Administration in 2010 as a marker in the stratification of risk for HF. We assessed galectin-3 as a biomarker for HF diagnosis in patients with preserved ejection fraction （pEF） and compared its performance with that of B-type natriuretic peptide （BNP）. Methods Thirty-five pEF patients with HF （HFpEF group） and 43 pEF patients without HF （control group） were enrolled. Plasma levels of galectin-3 and BNP in HFpEF and control subjects were determined. Sensitivity, specificity, pre dictive values, and accuracy of galectin-3 and BNP as markers for HF diagnosis were calculated and compared. Results Levels of galec- tin-3 and BNP were 23.09 ±6.97 ng/mL and 270.46 ± 330.41 pg/mL in the HFpEF group, and 16.74 ± 2.75 ng/mL and 59.94 ± 29.93 pg/mL in the control group, respectively. Differences in levels of galectin-3 and BNP between the two groups were significant （P 〈 0.01）. As a bio- marker for HF diagnosis in study subjects, galectin-3 showed sensitivity and specificity of 94.3% and 65.1%, respectively, at a cutoff value of 17.8 ug/mL. BNP showed sensitivity and specificity of 77.1% and 90.7%, respectively, at a cutoff value of 100 pg/mL. Galectin-3 was a significantly more sensitive （P 〈 0.05） but less specific （P 〈 0.01） biomarker compared with BNP. Differences in positive predictive value, negative predictive value, and accuracy between galectin-3 and BNP markers were not significant （P 〉 0.05）. Areas under the receiver operating characteristic curve （95% confidence interval） were 0.891 （0.808-0.974） and 0.896 （0.809-0.984） for galectin-3 and BNP, respec- tively, with no significant difference between the two values （P 〉 0.05）. Conclusions The leve

关键词： Heart failure Preserved ejection fraction Galectin-3 B-type natriuretic peptide Diagnosis

Thermal transport in organic/inorganic composites

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Frontiers in Energy 2018年第1期12卷 72-86页

作者： Bin LIU lan dong Qing Xi Xiangfan XU Jun ZHOU Baowen LI Center for Phononics and Thermal Energy Science China-EU JointCenter for Nanophononics Shanghai Key Laboratory of SpecialArtificial Microstructure Materials and Technology School of PhysicsScience and Engineering Tongji University Shanghai 200092 China Department of Mechanical Engineering University of ColoradoBoulder CO 80309 USA

Composite materials, which consist of organic and inorganic components, are widely used in various fields because of their excellent mechanical properties, resistance to corrosion, low-cost fabrication, etc. Thermal properties of organic/inorganic composites play a crucial role in some applications such as thermal interface materials for micro-electronic packaging, nano-porous materials for sensor development, thermal insulators for aerospace, and high-performance thermoelectric materials for power generation and refrigeration. In the past few years, many studies have been conducted to reveal the physical mechanism of thermal transport in organic/ inorganic composite materials in order to stimulate their practical applications. In this paper, the theoretical and experimental progresses in this field are reviewed. Besides, main factors affecting the thermal conductivity of organic/ inorganic compositcs are discussed, including the intrinsic properties of organic matrix and inorganic fillers, topolo- gical structure of composites, loading volume fraction, and the interfacial thermal resistance between fillers and organic matrix.

关键词： thermal conductivity organic/inorganic com-posites effective medium theory thermal percolationtheory interfacial thermal resistance

Tribological Performance of Different Concentrations of Al_(2)O_(3)Nanofluids on Minimum Quantity Lubrication Milling

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Chinese Journal of Mechanical Engineering 2023年第4期36卷 67-78页

作者： Xiufang Bai Juan Jiang Changhe Li lan dong Hafiz Muhammad Ali Shubham Sharma School of Mechanical and Automotive Engineering Qingdao University of TechnologyQingdao 266520China School of Mechanical and Electrical Engineering Qingdao Binhai UniversityQingdao 266555China Mechanical Engineering Department King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia Department of Mechanical Engineering IK Gujral Punjab Technical UniversityMain Campus-KapurthalaJalandhar 144603India

Nanofluid minimum quantity lubrication(NMQL)is a green processing *** oil is suitable as base oil because of excellent lubrication performance,low freezing temperature,and high ***_(2)O_(3)nanoparticles improve not only the heat transfer capacity but also the lubrication *** physical and chemical proper-ties of nanofluid change when Al_(2)O_(3)nanoparticles are ***,the effects of the concentration of nanofluid on lubrication performance remain ***,the mechanisms of interaction between Al_(2)O_(3)nanoparti-cles and cottonseed oil are *** this research,nanofluid is prepared by adding different mass concentrations of Al_(2)O_(3)nanoparticles(0,0.2%,0.5%,1%,1.5%,and 2%wt)to cottonseed oil during minimum quantity lubrication(MQL)milling 45 *** tribological properties of nanofluid with different concentrations at the tool/workpiece interface are studied through macro-evaluation parameters(milling force,specific energy)and micro-evaluation parameters(surface roughness,micro morphology,contact angle).The result show that the specific energy is at the minimum(114 J/mm^(3)),and the roughness value is the lowest(1.63μm)when the concentration is 0.5 wt%.The surfaces of the chip and workpiece are the smoothest,and the contact angle is the lowest,indicating that the tribological proper-ties are the best under 0.5 wt%.This research investigates the intercoupling mechanisms of Al_(2)O_(3)nanoparticles and cottonseed base oil,and acquires the optimal Al_(2)O_(3)nanofluid concentration to receive satisfactory tribological properties.

关键词： Milling Al_(2)O_(3)nanofluid Minimum quantity lubrication(MQL) Surface micromorphology

Transition Spectrum Intensities and Absorption Coefficients of Hydride BH_(2) Free Radical Molecule

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Chinese Physics Letters 2012年第8期29卷 77-80页

作者： WU dong-lan TAN Bin ZHANG Xin-Qin XIE An-dong College of Mathematic and Physical Jinggangshan UniversityJi'an 343009

We build a partition function model by product approximation first,then put the normal temperature calculated by moment square R^(2)/_(V),which has no rotational transition,approximately as a constant and applied to high temperature,and lastly program the compiler and compute the spectral line intensities and absorption coefficients of the 001-000 band for the hydride BH_(2) free radical molecule at several *** results show that the calculated values of total partition function agree with the data obtained from Gauss calculations and the fitted values by five factorial *** excellent agreement has made it feasible to calculate the spectral line intensities and absorption coefficients at different *** the spectral figures at different temperatures,we find that they accord with the spectrum characteristic of asymmetric top molecules in some *** analysis has significance in measuring the high-temperature spectrum intensities of radical molecules by experiment.

关键词： partition radical spectrum

Genesis and mechanisms of organic matter enrichment of the Hongshuizhuang Formation in the Zhoukoudian area of Jingxi sag,North China

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Journal of Palaeogeography 2022年第4期11卷 653-677页

作者： Jin-Hua Zeng Xiao-dong lan Hao Liu Yu-Shuai Wei School of Ocean Sciences China University of GeosciencesBeijing 100083China School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China

The Hongshuizhuang Formation is a Meso-Neoproterozoic high-quality source rock in the North China Craton(NCC),comprising abundant organic *** present study focuses on the analysis of the Hongshuizhuang Formation in the Zhoukoudian area of the Jingxi sag,discussing its genesis and mechanisms of organic matter enrichment through geological and geochemical *** Hongshuizhuang Formation is divided into three members from bottom to top respectively as the lower,middle and upper *** elements analysis indicate that the Hongshuizhuang Formation developed restricted neritic facies in an extensional environment within a continental island arc under a post-orogenic *** lower and upper members were deposited in a relatively shallow,strongly retained water mass within a suboxic and saline environment influenced by subhumid climate,while the middle member was deposited in an anoxic deep-water environment with relatively low salinity and weak *** PAAS-normalized rare earth element distributions of the middle and upper members show an enrichment of LREEs and a depletion of HREEs,and a low mean Y/Ho ratio with a positive Eu anomaly,indicating that the regional deposition has been affected by hydrothermal *** negativeδ13 C andδ18 O values and the positive87 Sr/86 Sr values confirm that the deposition of the middle and upper members was accompanied by crustal hydrothermal *** of organic matter and enrichment of Baxsand P indicate that productivity is the basis of organic matter enrichment in the Hongshuizhuang Formation,where high-quality source rocks are concentrated in the middle *** addition,reduced water mass controls the preservation of organic *** activity,humid climate,and salinity support a higher primary productivity and the formation of reduced water ***,due to limitations in depth,the high-quality source rocks in the Jingxi sag are thinner than the Jibei sag.

关键词： Genesis Organic matter enrichment Geochemistry Hydrothermal activity Zhoukoudian area Jingxi sag

Suppressed Thermal Conductivity in Polycrystalline Gold Nanofilm:The Effect of Grain Boundary and Substrate

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Chinese Physics Letters 2021年第2期38卷 78-83页

作者： lan dong Xiangshui Wu Yue Hu Xiangfan Xu Hua Bao University of Michigan-Shanghai Jiao Tong University Joint Institute Shanghai Jiao Tong UniversityShanghai 200240China Center for Phononics and Thermal Energy Science China-EU Joint Center for NanophononicsSchool of Physics Science and EngineeringTongji University200092 Shanghai 200092China

We investigate the electrical conductivity and thermal conductivity of polycrystalline gold nanofilms,with thicknesses ranging from 40.5nm to 115.8 nm,and identify a thickness-dependent electrical conductivity,which can be explained via the Mayadas and Shatzkes(MS)*** the same time,a suppressed thermal conductivity is observed,as compared to that found in the bulk material,together with a weak thickness *** compare the thermal conductivity of suspended and supported gold films,finding that the supporting substrate can effectively suppress the in-plane thermal conductivity of the polycrystalline gold *** results indicate that grain boundary scattering and substrate scattering can affect electron and phonon transport in polycrystalline metallic systems.

关键词： conductivity polycrystalline scattering

Parameterized Littlewood-Paley Operators and Area Integrals on Weak Hardy Spaces

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Acta Mathematica Sinica,English Series 2013年第10期29卷 1857-1870页

作者： Yan LIN Zong Guang LIU dong lan MAO Zhen Kai SUN School of Sciences China University of Mining and Technology

In this paper, we establish the boundedness of parameterized Littlewood-Paley operator μλ^＊,p and parameterized area integralμΩ^σSp with kernel satisfying the logarithmic type Lipschitz condition on the weak Ha... 详细信息

关键词： Parameterized Littlewood-Paley operator parameterized area integral weak Hardy space