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Geochemistry of the limahe Intrusion in the Panxi District, SW China:Discussion on the Relationship to the Emeishan Basalts

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Acta Geologica Sinica(English Edition) 2008年第1期82卷 105-116页

作者： li Ying ZHANG zhaochong AI yu zhao li YANG Tiezheng State Key Laboratory of Processed and Mineral Resources China University of Geoscinces Beijing 100083 China

The limahe intrusion is a typical rock hosting Cu-Ni sulfide deposit in the Panxi district. The major element, trace element and Sr-Nd isotopic geochemical data are reported in this study both firstly and systemically. Age-corrected （87Sr/86Sr） and εNd（t） isotope values, ranging from 0.687062 to 0.709298, from -0.6 to -4.13 respectively, are partly overlap the field of the Emeishan basalt and OIB, and they lie between upper crust and OIB generally. The similar patterns between the limahe intrusion and the picrites of the Emeishan large igneous province imply the genetic relationship to the Emeishan basalts. Their lower Nb/U （〈30）, higher （La/Nb）pM and （Th/Ta）pM ratio values （〉1） indicate contamination of the upper crust material. The correlation between MgO and major oxides reflects the fractional crystallization of olivine, clinopyroxene and minor plagioclase in the deep-seated chamber. Therefore increased SiO2 and lowered FeO by the upper crustal contamination may trigger immiscible sulfide melt, which then flowed along the structural fracture and intruded into gabbrodiorite, resulting in the formation of Cu-Ni sulfide orebody.

关键词： assimilation geochemistry mafic-utramafic intrusions limahe Panxi district

Nanoparticle-based lift-off technique for ultra-thin nanoporous film preparation

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Science in China(Series F) 2008年第6期51卷 819-824页

作者： WANG Wei zhao yu LEI YinHua li ZhiHong National Key Laboratory of Nano/Micro Fabrication Technology Institute of Microelectronics Peking Uni-versity Beijing 100871 China

Ultra-thin membrane with nanoscale through hole has great potential in biomedical applications, where precise controllability of porosity, pore size and film thickness is urgently required. The present work proposed a cost-effective way to prepare the ultra-thin nanoporous film with a promising controllability. Monodispersed nanoparticle, rather than photoresist, is used as the sacrificial material for this new lift-off process. By releasing the particles, holes can be achieved with predeter-mined characters. A 110 nm-thick nanoporous aluminum film with well-controlled pore＇s diameter was successfully fabricated to validate the technique. The technique has wider process window and better applicability than other nanofabrication methods.

关键词： nanoparticle lift-off nanoporous film

Morphological structures of poly(vinylidene fluoride)/montmorillonite nanocomposites

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Science China Chemistry 2007年第6期50卷 790-796页

作者： SONG yuMing zhao ZhuDi yu WenXue li Bo CHEN XinFang College of Materials Science and Engineering Jilin University Changchun 130012 China College of Materials Science and Engineering Jilin University Changchun 130012 China College of Materials Science and Engineering Jilin University Changchun 130012 China College of Materials Science and Engineering Jilin University Changchun 130012 China College of Materials Science and Engineering Jilin University Changchun 130012 China

Poly(vinylidene fluoride)(PVDF)/montmorillonite(MMT)nanocomposites were prepared by melt blending a kind of organically modified montmorillonite with *** morphological structures of the nanocomposites were studied using X-ray diffraction(XRD),transmission electron microscopy(TEM),Fourier transform infrared(FTIR)spectroscopy,and differential scanning calorimetry(DSC).The results indicate that organically modified montmorillonites are in the form of intercalation,exfoliation,and fragments in the PVDF *** the composites,the(001)peak position of MMT was found to shift to a lower angle in XRD patterns,and some MMT fragments could be observed under *** loading was favorable to producing the piezoelectric beta phase in the PVDF matrix and caused internal stress in a *** the same time,the crystallinity and spherulite size of PVDF decreased with the MMT *** induced beta phase is stable even at high temperatures(160℃).For these changes in morphological structures,some possible explanations were proposed based on the experimental results.

关键词： organically modified montmorillonite, nanocomposite, crystalline structure

Medical comorbidities at admission is predictive for 30-day in-hospital mortality in patients with acute myocardial infarction： analysis of 5161 cases

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Journal of Geriatric Cardiology 2011年第1期8卷 31-34页

作者： Xue-Dong Yang yu-Sheng zhao yu-Feng li Xin-Hong Guo Institute of Geriatric Cardiology Chinese PLA General Hospital Beijing 100853 China

Background The present study investigated the prognostic value of medical comorbidities at admission for 30-day in-hospital mortality in patients with acute myocardial infarction （AMI）. Methods A total of 5161 patients with AMI were admitted in Chinese PLA General Hospital between January 1, 1993 and December 31, 2007. Medical comorbidities including hypertension, diabetes mellitus, previous myocardial infarction, valvular heart disease, chronic obstructive pulmonary disease （COPD）, renal insufficiency, previous stroke, atrial fibrillation and anemia, were identified at admission. The patients were divided into 4 groups based on the number of medical comorbidities at admission （0, 1, 2, and ≥3）. Cox regression analysis was used to calculate relative risk （RR） and 95% confidence intervals （CI）, with adjustment for age, sex, heart failure and percutaneous coronary intervention （PCI）. Results The mean age of the studied population was 63.9 ± 13.6 years, and 80.1% of the patients were male. In 74.6% of the patients at least one comorbidity were identified. Hypertension （50.7%）, diabetes mellitus （24.0%） and previous myocardial infarction （12%） were the leading common comorbidities at admission. The 30-day in-hospital mortality in patients with 0, 1, 2, and ≥3 comorbidities at admission （7.2%） was 4.9%, 7.2%, 11.1%, and 20.3%, respectively. The presence of 2 or more comorbidities was associated with higher 30-day in-hospital mortality compared with patients without comorbidity （RR： 1.41, 95% CI： 1.13-1.77, P = 0.003, and RR： 1.95, 95% CI： 1.59-2.39, P = 0.000, respectively）. Conclusions Medical comorbidities were frequently found in patients with AMI. AMI patients with more comorbidities had a higher 30-day in-hospital mortality might be predictive of early poor outcome in patients with AMI.

关键词： acute myocardial infarction comorbidity mortality

ALGORITHM FOR SPHERICITY ERROR AND THE NUMBER OF MEASURED POINTS

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Chinese Journal of Mechanical Engineering 2006年第3期19卷 460-463页

作者： HE Gaiyun WANG Taiyong zhao Jian yu Baoqin li Guoqin School of Mechanical Engineenng Tianjin University Tianjin 300072 China

The data processing technique and the method determining the optimal number of measured points are studied aiming at the sphericity error measured on a coordinate measurement machine （CMM）. The consummate criterion for the minimum zone of spherical surface is analyzed first, and then an approximation technique searching for the minimum sphericity error from the form data is studied. In order to obtain the minimum zone of spherical surface, the radial separation is reduced gradually by moving the center of the concentric spheres along certain directions with certain steps. Therefore the algorithm is precise and efficient. After the appropriate mathematical model for the approximation technique is created, a data processing program is developed accordingly. By processing the metrical data with the developed program, the spherical errors are evaluated when different numbers of measured points are taken from the same sample, and then the corresponding scatter diagram and fit curve for the sample are graphically represented. The optimal number of measured points is determined through regression analysis. Experiment shows that both the data processing technique and the method for determining the optimal number of measured points are effective. On average, the obtained sphericity error is 5.78 μm smaller than the least square solution, whose accuracy is increased by 8.63%; The obtained optimal number of measured points is half of the number usually measured.

关键词： Sphericity error Minimum zone Data processing Scatter diagram Fit curve

Design, Syntheses and Biological Activities of Novel Anthranilic Diamide Insecticides Containing N-Pyridylpyrazole

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Chemical Research in Chinese Universities 2013年第1期29卷 51-56页

作者： zhao yu li Yong-qiang XIONG li-xia XU li-ping PENG li-na li Fang li Zheng-ming National Pesticidal Engineering Centre(Tianjin) State Key Laboratory of Elemento-organic Chemistry Nankai University Tianjin 300071 P. R. China

In search of environmentally benign insecticides with high activity, low toxicity and low residue, a series of novel anthranilic diamide derivatives containing N-pyridylpyrazole was designed and synthesized. All the compounds were characterized by H NMR spectroscopy and elemental analysis. The single crystal structure of com pound 8j was determined by X-ray diffraction. The insecticidal activities of the new compounds were evaluated. The results show that some compounds exhibited moderate insecticidal activities against Lepidoptera pests. Among this series of compounds, compounds 80 and 8p showed 100% larvicidal activity against Mythimna separate Walker, Plutella xylostella linnaeus and Laphygma exigua Hubner at a test concentration of 200 mg/kg, which is equal to the commercial chlorantraniliprole.

关键词： Anthranilic diamide Ryanodine receptor Insecticidal activity

Synthesis, Crystal Structure and Insecticidal Activities of Novel Neonicotinoid Derivatives

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Chemical Research in Chinese Universities 2010年第3期26卷 380-383页

作者： zhao yu WANG Gang li Yong-qiang WANG Su-hua li Zheng-ming State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic Chemistry National Pesticide Engineering Research Center（Tianjin） Nankai University Tianjin 300071 P. R. China

Ten new N-oxalyl derivatives of neonicotinoid compound were designed and synthesized. Their structures were confirmed by ^1H NMR spectra, elemental analysis and X-ray diffraction. The preliminary insecticidal activities of the new compounds were evaluated. The results of bioassays indicate that the title Compounds exhibit moderate insecticidal activities. Surprisingly, the insecticidal activity of compound 7b against bean aphids at 200 mg/kg is 100%, which is comoarable to that of the commercialized imidacloprid.

关键词： Neonicotinoid N-Oxalyl derivative Insecticidal activity Bean aphid Imidacloprid

The marriage of immunomodulatory,angiogenic,and osteogenic capabilities in a piezoelectric hydrogel tissue engineering scafold for military medicine

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Military Medical Research 2024年第3期11卷 323-344页

作者： Ping Wu lin Shen Hui-Fan liu Xiang-Hui Zou Juan zhao yu Huang yu-Fan Zhu zhao-yu li Chao Xu li-Hua Luo Zhi-Qiang Luo Min-Hao Wu lin Cai Xiao-Kun li Zhou-Guang Wang Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research the Fifth Affiliated Hospital of Wenzhou Medical UniversityLishui 323000ZhejiangChina Oujiang Laboratory(Zhejiang Lab for Regenerative Medicine Vision and Brain Health)School of Pharmaceutical ScienceWenzhou Medical UniversityWenzhou 325000ZhejiangChina Department of Spine Surgery and Musculoskeletal Tumor Zhongnan Hospital of Wuhan UniversityWuhan 430071China National Engineering Research Center for Nanomedicine College of Life Science and TechnologyHuazhong University of Science and TechnologyWuhan 430074China Department of Overseas Education College Jimei UniversityXiamen 361021FujianChina School and Hospital of Stomatology Wenzhou Medical UniversityWenzhou 325035ZhejiangChina

Background:Most bone-related injuries to grassroots troops are caused by training or accidental *** establish preventive measures to reduce all kinds of trauma and improve the combat effectiveness of grassroots troops,it is imperative to develop new strategies and scafolds to promote bone ***:In this study,a porous piezoelectric hydrogel bone scafold was fabricated by incorporating polydopamine(PDA)-modified ceramic hydroxyapatite(PDA-hydroxyapatite,PHA)and PDA-modified barium titanate(PDABaTiO_(3),PBT)nanoparticles into a chitosan/gelatin(Cs/Gel)*** physical and chemical properties of the Cs/Gel/PHA scafold with 0–10 wt%PBT were *** and animal experiments were performed to characterize the immunomodulatory,angiogenic,and osteogenic capabilities of the piezoelectric hydrogel scafold in vitro and in ***:The incorporation of BaTiO_(3) into the scafold improved its mechanical properties and increased self-generated *** to their endogenous piezoelectric stimulation and bioactive constituents,the prepared Cs/Gel/PHA/PBT hydrogels exhibited cytocompatibility as well as immunomodulatory,angiogenic,and osteogenic capabilities;they not only effectively induced macrophage polarization to M2 phenotype but also promoted the migration,tube formation,and angiogenic differentiation of human umbilical vein endothelial cells(HUVECs)and facilitated the migration,osteodifferentiation,and extracellular matrix(ECM)mineralization of MC3T3-E1 *** in vivo evaluations showed that these piezoelectric hydrogels with versatile capabilities significantly facilitated new bone formation in a rat large-sized cranial injury *** underlying molecular mechanism can be partly attributed to the immunomodulation of the Cs/Gel/PHA/PBT hydrogels as shown via transcriptome sequencing analysis,and the PI3K/Akt signaling axis plays an important role in regulating macrophage M2 ***:The piezoelectric Cs/Gel/PHA/PBT hy

关键词： Piezoelectric hydrogel Tissue engineering scafold Immunomodulation Angiogenesis Osteogenic differentiation

Physical Properties and Regulating Mechanism of Fluoride-Free and Harmless B_2O_3-Containing Mould Flux

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Journal of Iron and Steel Research International 2007年第1期14卷 25-28页

作者： li Gui-rong WANG Hong-ming DAI Qi-xun zhao yu-tao li Jing-sheng School of Materials Science and Engineering Jiangsu University Zhenjiang 212013 Jiangsu China

The flux agents in common mould fluxes were fluoride and sodium oxide, which would do great harm to environments. B2O3 was selected as flux. The physical properties of B2O3-containing mould fluxes were studied. The corresponding physical properties of 37. 91% CAO-43.09% SiO2-5% Al2O3-5% MgO-2% li20-7% B2O3 mould fluxes were as follows： the melting point was 909℃, the flowing temperature was 1 160℃, the viscosity and surface tension at 1300 ℃ were 0. 4 Pa · s and 0.32 N/m respectively, which could meet the demands for certain kinds of steels for mould fluxes in continuous casting.

关键词： B2O3 -containing mould flux fluoride-free flux harmless flux physical property