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mineralization episode of porphyry copper deposits in the Jinshajiang-Red River mineralization belt: Re-Os dating

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Science China Earth Sciences 2005年第2期48卷 192-198页

作者： WANG Denghong, QU Wenjun, LI Zhiwei, YIN Hanlong4 & CHEN Yuchuan Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China National Center of Rock and Mineral Analysis, Chinese Academy of Geological Sciences, Beijing 100037, China Resource Assessment Center of Yunnan, Kunming 650011, China Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100101, China Chinese Academy of Geological Sciences, Beijing 100037, China 1. Institute of Mineral Resources Chinese Academy of Geological Sciences 100037 Beijing China 2. National Center of Rock and Mineral Analysis Chinese Academy of Geological Sciences 100037 Beijing China 3. Resource Assessment Center of Yunnan 650011 Kunming China 4. Institute of Geology and Geophysics Chinese Academy of Sciences 100101 Beijing China 5. Chinese Academy of Geological Sciences 100037 Beijing China

Re-Os isotopic dating for the molybdenites from the porphyry copper deposits of the Jinshajiang-Red River mineralization belt in Yunnan Province yields isochron ages of 33.9±1.1 Ma for the Machangqing deposit and 34.4±0.5 Ma for the Tongchang deposit. This result shows that both the Machangqing and the Tongchang porphyry Cu-Mo deposits from two different ore-fields formed simultaneously. This new data and the published Re-Os model ages of molybdenite (35.4 Ma, 35.9 Ma, 36.2 Ma) of the Yulong porphyry copper deposit in Tibet, which is located in the same Jinshajiang-Red River mineralization belt as the Machangqing deposit and the Tongchang deposit, suggest that these three Cenozoic porphyry copper deposits in the Jinshajiang-Red River mineralization belt were contemporary for their mineralization episode. That is to say, even their present locality is far away and nearly iso-distantly distributed, these three porphyry Cu(Mo) deposits belong to the same mineralization episode at the end of Eocene.

关键词： Re-Os isotopic dating, porphyry Cu deposits, Cenozoic, mineralization episode.

mineralization of Hydroxyapatite Regulated by Recombinant Human-like Collagen

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Journal of Wuhan University of Technology(Materials Science) 2005年第B12期20卷 41-43页

作者：翟勇崔福斋 Biomaterials Laboratory Department of Materials Science and Engineering Tsinghua University Beijing 100084 China

We reported recombinant human-like type I collagen inducing growth of hydroxyapatite crystals in vitro in the form of self-assembly of nano-fibrils of mineralized collagen resembling extracellular matrix, which obey the same rules, but is superior to the collagen derived from animal tissues because the latter may carry diseases of animals and cause immunological reactions. The mineralized collagen fibrils aligned parallel to each other to form mineralized collagen fibers. Hydroxyapatite nanocrystals grew on the surface of these collagen fibrils with the c-axis of nanocrystals of HA orienting along the longitudinal axis of the fibrils.

关键词： mineralization collagen recombinant

mineralization of the Liwu large-scale stratiform copper deposits in Sichuan Province, China: Constraints from fluid inclusions

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China Geology 2023年第2期6卷 252-268页

作者： Hua-yun Yuan Qing Zhou Yuan-bao Song Wei Zhang Hui-hua Zhang Tong-zhu Li Tao Yin Chang-nan Wang Gao-lin Tang Evaluation and Utilization of Strategic Rare Metals and Rare Earth Resource Key Laboratory of Sichuan Province Sichuan Geological SurveyChengdu 610081China Chengdu Center China Geological SurveyMinistry of Natural ResourcesChengdu 610081China Sichuan Liwu Copper Mining Company Ganzi 626200China

The Liwu stratiform copper deposit is located in the northwestern Jianglang dome,western *** studies mainly focus on the genetic type and mineralization of this *** fluid inclusion characteristics of metallogenic period quartz veins were studied to reveal the ore-forming fluid *** Raman analysis indicates that the ore-forming fluids is a H_(2)O-NaCl-CH_(4)(-CO_(2))*** inclusions microthermometry shows a homogenization temperature of 181-375°C and a salinity of 5.26%-16.99%for the disseminated-banded Cu-Zn mineralization;but a homogenization temperature of 142-343°C and a salinity of 5.41%-21.19%for the massive-veined Cu-Zn *** features suggest a medium-high temperature and a medium salinity for the ore-forming fluids.H-O isotopic data indicates that the ore-forming fluids were mainly from the metamorphic and magmatic water,plus minor formation *** sulfur isotopic data indicates that sulfur was mainly derived from the formation and magmatic *** of the disseminated-banded mineralization was mainly correlated with fluid mixing and water-rock reaction;whereas that of the massive-veined mineralization was mainly correlated with fluid *** genetic type of the deposit is a medium-high temperature hydrothermal deposit related to magmatism and controlled by shear *** study is beneficial to understand the stratiform copper deposit.

关键词： Stratiform copper deposit mineralization Fluid inclusion H-O isotopes Hydrothermal deposit Dome structure Middle Proterozoic metamorphic rock Mineral exploration engineering Sichuan Province

Surface Treatment and Biomimetic mineralization of Porous Microspheres Fabricated by Calcium Gluconate-g-Poly(D,L-lactide)

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Chinese Journal of Polymer Science 2017年第7期35卷 837-845页

作者： Le-yuan Song 蒋妮甘志华 State Key Laboratory of Organic-Inorganic Composites Beijing Laboratory of Biomedical Materials College of Life Science and Technology Beijing University of Chemical Technology Beijing 100029 China

Porous hybrid microspheres were fabricated by the synthesized calcium gluconate-g-poly（D,L-lactide）（CG-g- PDLLA） composites. These hybrid microspheres were treated with an alkaline solution for different period of time to control the amount of generated carboxylate groups and remained CG on the surface. The microspheres were then incubated in a supersaturated simulated body fluid （1.5 SBF） solution for different time to investigate their biomimetic mineralization behavior. The depositions were found to have a fine cluster morphology, a similar crystal structure and chemical structure to natural hydroxyapatite, and a medium Ca/P of approximately 1.30. The effect of surface treating time on the structure and mineralization behavior of these microspheres has been discussed in detail. The results indicate that the nucleation and growth of apatite on the surface are influenced by the induced carboxylate groups and the remained CG. The hybrid CG-g- PDLLA microspheres have the potential as a novel alternative in bone tissue engineering.

关键词： Calcium gluconate Poly(D,L-lactide) mineralization Hydroxyapatite Porous microspheres

Biodecolorization and partial mineralization of Reactive Black 5 by a strain of Rhodopseudomonas palustris

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Journal of Environmental Sciences 2008年第10期20卷 1218-1225页

作者： WANG, Xingzu CHENG, Xiang SUN, Dezhi Qi, Hong School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 China

A strain of photosynthetic bacterium, Rhodopseudomonas palustris W1, isolated from a lab-scale anaerobic moving bed biofilm reactor (MBBR) treating textile e?uent was demonstrated to decolorize Reactive Black 5 (RB5) effciently under anaerobic condition. By a series of batch tests, the suitable conditions for RB5 decolorization were obtained, namely, pH < 10, light presence, glutamine or lactate as carbon source with concentration more than 500 mg/L when lactate is selected, NH4Cl as a nitrogen source wi...

关键词： decolorization mineralization Reactive Black 5 (RB5) photosynthetic bacterium metabolite analysis

Degradation and mineralization of 2-chloro-, 3-chloro- and 4-chlorobiphenyl by a newly characterized natural bacterial strain isolated from an electrical transformer fluid-contaminated soil

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Journal of Environmental Sciences 2008年第10期20卷 1250-1257页

作者： Matthew O.Ilori Gary K.Robinson Sunday A.Adebusoye Department of Botany and Microbiology University of Lagos Akoka Yaba Lagos Nigeria Department of Biosciences University of Kent Canterbury Kent CT2 7NJ United Kingdom

A bacterium classified as Achromobacter xylosoxidans strain IR08 by phenotypic typing coupled with 16S rRNA gene analysis was isolated from a soil contaminated with electrical transformer ?uid for over sixty years using Aroclor 1221 as an enrichment substrate. The substrate utilization profiles revealed that IR08 could grow on all three monochlorobiphenyls (CBs), 2,4’- and 4,4’-dichlorobiphenyl as well as 2-chlorobenzoate (2-CBA), 3-CBA, 4-CBA, and 2,3-dichlorobenzoate. Unusually, growth was poorly sustaine...

关键词： aerobic degradation chlorobenzoates mineralization monochlorobiphenyls natural strain polychlorinated biphenyls

Surface Bioactive Modification of Alumina Ceramic by mineralization in Modified SBF

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Journal of Bionic Engineering 2022年第6期19卷 1637-1644页

作者： Wenmin Zhang Caixia Liang Qixuan He Xiaoyan Cao Fangli Yuan Jiandong Ye School of Material Science and Engineering South China University of TechnologyGuangzhou510640China National Engineering Research Center for Tissue Restoration and Reconstruction Guangzhou510006China Guangdong Fapon Biotech Co.Ltd Dongguan523808China Inspection and Quarantine Comprehensive Technology Centre of Foshan Entry‐exit Inspection and Quarantine Bureau Foshan528042China Key Laboratory of Biomedical Materials of Ministry of Education South China University of TechnologyGuangzhou510641China

In the present study,it is found that the prepared alumina ceramics has better mineralization ability in a newly revised simulated body *** the extension of mineralization time,the amount of hydroxyapatite(HA)crystals deposited on the surface of alumina ceramics also increased *** results of cell biological experiments of alumina ceramics with hydroxyapatite surface layer demonstrate that the mineralized materials have better biological activity and osteogenesis properties in *** the meanwhile,the ALP activity and expression of osteogenesis-related genes(OPN,ALP,Col-I,and OCN)of mouse bone marrow stromal stem cells on the samples were significantly promoted by increasing the formation of HA on the surface of alumina *** research concluded that alumina ceramics with HA phase on surface had great potential to be developed as a sort of bioactive material in the bone repair field.

关键词： Alumina Biomaterials mineralization Hydroxyapatite Osteoblasts

Degradation and mineralization of ciprofloxacin by gas–liquid discharge non-thermal plasma

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Plasma Science and Technology 2019年第1期21卷 52-62页

作者： Shuheng HU Xinghao LIU Zimu XU Jiaquan WANG Yunxia LI Jie SHEN Yan LAN Cheng CHENG School of Resources and Environmental Engineering Hefei University of Technology Intelligent Manufacturing Technology Research Institute Hefei University of Technology Institute of Plasma Physics Chinese Academy of Sciences Center of Medical Physics and Technology Hefei Institutes of Physical Science Chinese Academy of Sciences Anhui Province Key Laboratory of Medical Physics and Technology Hefei Institutes of Physical ScienceChinese Academy of Sciences

A typical quinolones antibiotic ciprofloxacin(CIP) in aqueous solution was degraded by a gas–liquid discharge non-thermal plasma system. The discharge plasma power and the emission intensity of the excited reactive species(RS) generated in the gas phase were detected by the oscilloscope and the optical emission spectroscopy. The effects of various parameters on CIP degradation, i.e. input powers, initial concentrations addition of radical scavengers and p H values were investigated. With the increase of discharge power, the degradation efficiency increased but the energy efficiency significantly reduced. The degradation efficiency also reduced under high concentration of initial CIP conditions due to the competitive reactions between the plasma-induced RS with the degradation intermediates of CIP. Different radical scavengers(isopropanol and CCl_4) on ·OH and H· were added into the reaction system and the oxidation effects of ·OH radicals have been proved with high degradation capacity on ***, the long-term degradation effect on CIP in the plasma-treated aqueous solution proved that the long-lived RS(H_2O_2 and O_3, etc) might play key roles on the stay effect through multiple aqueous reactions leading to production of ·OH. The degradation intermediates were determined by the method of electrospray ionization(+)-mass spectroscopy, and the possible degradation mechanism were presented.

关键词： gas-liquid plasma ciprofloxacin mineralization degradation mechanism

Systemic modulation of skeletal mineralization by magnesium implant promoting fracture healing: Radiological exploration enhanced with PCA-based machine learning in a rat femoral model

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Journal of Magnesium and Alloys 2024年第3期12卷 1009-1020页

作者： Yu Sun Heike Helmholz Regine Willumeit-Römer Institute of Metallic Biomaterials Helmholtz-Zentrum HereonGermany

The clinical application of magnesium(Mg)and its alloys for bone fractures has been well supported by in vitro and in vivo ***,there were studies indicating negative effects of high dose Mg intake and sustained local release of Mg ions on bone metabolism or repair,which should not be ignored when developing Mg-based ***,it remains necessary to assess the biological effects of Mg implants in animal models relevant to clinical treatment *** primary purpose of this study was to validate the beneficial effects of intramedullary Mg implants on the healing outcome of femoral fractures in a modified rat *** addition,the mineralization parameters at multiple anatomical sites were evaluated,to investigate their association with healing outcome and potential clinical *** to the control group without Mg implantation,postoperative imaging at week 12 demonstrated better healing outcomes in the Mg group,with more stable unions in 3D analysis and high-mineralized bridging in 2D *** bone tissue mineral density(TMD)was higher in the Mg group at the non-operated femur and lumbar vertebra,while no differences between groups were identified regarding the bone tissue volume(TV),TMD and bone mineral content(BMC)in *** the surgical femur,the Mg group presented higher TMD,but lower TV and BMC in the distal metaphyseal region,as well as reduced BMC at the osteotomy *** component analysis(PCA)-based machine learning revealed that by selecting clinically relevant parameters,radiological markers could be constructed for differentiation of healing outcomes,with better performance than 2D *** study provides insights and preclinical evidence for the rational investigation of bioactive materials,the identification of potential adverse effects,and the promotion of diagnostic capabilities for fracture healing.

关键词： Magnesium Implants Bone fracture mineralization Systemic modulation Principal component analysis.