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Effects of lanthanum and gadolinium on proliferation and differentiation of primary osteoblasts

Progress in Natural science:Materials International 2007年第5期17卷 618-623页

作者： Zhang Dawei , Zhang Jinchao , Chen Yao , Yang Mengsu and Yao Xinsheng (Department of Natural Products Chemistry, Shenyang Pharmaceutical university, Shenyang 110016, china Shenzhen Research Institute of City university of Hong Kong, Shenzhen 518057, china Department of Biology and Chemistry, City university of Hong Kong, china Department of Chemistry, college of Chemistry & Environmental science, Hebei university, Baoding 071002, china Key Laboratory for Research and Development of Traditional Chinese Medicine and Natural Medicine at Shenzhen, Shenzhen 518057, china) Department of Natural Products Chemistry Shenyang Pharmaceutical University Shenyang 110016 China Shenzhen Research Institute of City university of Hong Kong Shenzhen 518057 China Department of Biology and Chemistry City University of Hong Kong China Department of Chemistry College of Chemistry & Environmental Science Hebei University Baoding 071002 China Key Laboratory for Research and Development of Traditional Chinese Medicine and Natural Medicine at Shenzhen Shenzhen 518057 China

The effects of La3+ and Gd3+ on the proliferation, differentiation and adipogenic transdifferentiation of rat calvarial osteoblast-like cells (ROB cells) were evaluated by MTT method, measuring the activity of alkaline phosphatase (ALP) and Oil red O measurement. Both of La3+ and Gd3+ inhibited the proliferation of ROB cells at all concentrations (1×10-5, 1×10-6, 1×10-7, 1×10-8, 1×10-9 mol·L-1). La3+ at concentration of 1×10-5mol·L-1 significantly increased the alkaline phosphatase activity of ROB cells up to 3 folds (Pearth elements on the proliferation, differentiation and adipogenic transdifferentiation of ROB cells were dependent on their concentrations and species.

关键词： lanthanum gadolinium osteoblast-like cells proliferation differentiation transdifferentiation.

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Bathynotus:A key trilobite taxon for global stratigraphic boundary correlation between Cambrian Series 2 and Cambrian Series 3

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Progress in Natural science:Materials International 2009年第1期19卷 99-105页

作者： Jin Peng a,b,Yuanlong Zhao b,Jinliang Yuan c,Lu Yao b,Hong Yang b a Department of earth sciences,Nanjing university,Nanjing 210093,china b college of Resource and Environmental Engineering,Guizhou university(Caijiaguan Campus),Guiyang 550003,china c Nanjing Institute of Geology and Palaeontology,Chinese Academy of sciences,Nanjing 210008,china Department of earth sciences Nanjing University Nanjing 210093 China college of Resource and Environmental Engineering Guizhou University (Caijiaguan Campus) Guiyang 550003 China Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences Nanjing 210008 China

The Cambrian trilobite Bathynotus is a special morphology of Redlichiid,which is characterized by a wider thorax axis and an 11th macropleural segment bearing a long,backwardly directed ***,its 12th and 13th pleural segments are narrow and they terminate at a fulcrum where they fuse together and to the posterior edge of the long macropleural *** genus is widely distributed,occurring in North America,Siberia,the Altay-Sayan fold belt of Russia,South china,the Tarim Basin of china,and *** occurs primarily in deposits of the upper part of the continental slope,at the transition between stable platform settings and subsiding margins of the late Early ***,we recognize three species of Bathynotus from china,including *** which is widespread around the *** six species of Bathynotus have been reported from Siberia and the Altay-Sayan fold belt area of Russia,data presented here suggest that only three of these species are *** exhibits a short geological range,with its first occurrence late in the unnamed Cambrian Series 2 and the last appearance datum of Bathynotus at the boundary of Cambrian Series 2 and Cambrian Series *** late appearance datum(LAD) of Bathynotus provides an important global stratigraphic marker of the boundary between Cambrian Series 2 and Cambrian Series 3.

关键词： Bathynotus Age Cambrian Series 2 Boundary Correlation

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Male spike strobiles with Gnetum affinity from the Early Cretaceous in western Liaoning,Northeast china

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Journal of Systematics and Evolution 2009年第2期47卷 93-102页

作者： 1,2Shuang-Xing GUO 3Jin-Geng SHA 4Li-Zeng BIAN 5Yin-Long QIU 1(Department of Palaeobotany and Palynology,Nanjing Institute of Geology and Paleontology,Chinese Academy of sciences,Nanjing 210008,china) 2(Laboratory of Biodiversity and Biogeography,Kunming Institute of Botany,Chinese Academy of sciences,Kunming 650204,china) 3(State Key Laboratory of Palaeobiology and Stratigraphy,Nanjing Institute of Geology and Palaeontology,Chinese Academy of sciences,Nanjing 210008,china) 4(college of earth sciences,Nanjing university,Nanjing 210093,china) 5(Department of Ecology & Evolutionary Biology,The university Herbarium,university of Michigan,Ann Arbor,MI 48109-1048,USA) DepartmentofPalaeobotanyandPalynology NanjingInstituteofGeologyandPaleontologyChineseAcademyofSciencesNanjing210008China KunmingInstituteofBotany ChineseAcademyofSciencesKunming650204China

A fossil with Gnetum affinity was found in the Jianshangou Member(Barremian Age) of the Yixian Formation(Lower Cretaceous Epoch) of the Jehol Group in western Liaoning,northeastern *** single fossil specimen is represented by both elongate-cylindrical male spike strobiles which borne within a nodal bract of cauliflorous *** spike strobiles have apparent nodes,invisible internodes,and numerous verticillate involucral *** microsporangiate units within involucral collars are not *** male spike strobiles with verticillate involucral collars occur exclusively in Gnetum;hence,the fossil strobiles are attributed to a new taxon,Khitania columnispicata gen.& ***.,being closely related to *** general isotopic dating suggests an age of Barremian,ca.125-122 million years(Myr) ago for the Jianshangou *** palaeoecological and palaeoclimatic inference based on the compositions of flora and fauna,and lithological characters of the fossil locality suggests that the fossil plants grew in a subtropical mesophytic forest and under a warmer *** remains of male spike strobiles are the first record of gnetalean *** documents the evolution of the distinct gnetoid morphology and indicates a wider range of distribution of Gnetaceae in the Early Cretaceous than present day.

关键词： biogeography Early Cretaceous Gnetum affinity male spike strobiles northeastern china

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Titanium Aluminides: science, technology, Applications and Synthesis by Mechanical Alloying

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Journal of Materials science & technology 1994年第4期10卷 251-262页

作者： F.H.Froes (Institute for Materials and Advanced Processes (IMAP), college of Mines and earth Resources, university of Idaho, Moscow, Idaho 83843-4195, USA) Univ of Idaho Idaho United States

The production. characteristics. and commercialization of monolithic and composite titanium aluminides are summanzed with emphasis on use in the demanding aerospace industry. The attractive elevated temperature properties combined with alow density make these materials of great interest, but inherently low 'forgiveness', and environmental concerns, must be overcome before widespread use will occur One synthesis method for the production of monolithic titanium aluminides-mechanical alloying- will be discussed in detail

关键词： ASM Applications and Synthesis by Mechanical Alloying science technology TMS

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Bacterial community in deep subseafloor sediments from the western Pacific "warm pool"

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science china earth sciences 2008年第4期51卷 618-624页

作者： ZHAO Jing1 & ZENG RunYing2 1 college of Oceanography and Environmental science, Xiamen university, Xiamen 361005, china 2 Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, china college of Oceanography and Environmental science Xiamen University Key Laboratory of Marine Biogenetic Resources Third Institute of Oceanography State Oceanic Administration

The bacterial community in deep subseafloor sediments at a depth of 230 cm from the western Pacific "warm pool" is studied by construction of 16S rDNA clone library and PCR-RFLP (Restriction Fragment Length Polymorphism) analysis. The results indicate that the bacterial community in these sediments is mainly composed of five groups: α-Proteobacteria, β-Proteobacteria, CFB group (Cytophaga / Flexi-bacteria / Bacteroides), Acidobacteria and gram positive bacteria, with a few genera detected in each group. The most abundant bacteria group is α-Proteobacteria, and the next is β-Proteobacteria. The dominant species in α-and β-Proteobacteria are Sphingomonas paucimobilis and Pseudomonas alca-ligenes respectively. The CFB group is simply composed of members belonging to Flavobacterium. The gram positive bacteria are rich, and mainly consists of the genus Geobacillus. The analysis of bacterial community indicates that organic matter is still abundant in the subseafloor sediments at the depth of 230 cm in the western Pacific "warm pool" . These bacteria in this deep biosphere may play an impor-tant role in the nitrogen cycle of deep sea sediments at "warm pool" .

关键词： western Pacific 'warm pool' deep subseafloor sediment bacterial community

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Microstructural and deformational studies on mylonite in the detachment faults of Yalashangbo dome, North Himalayan domes zone

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Progress in Natural science:Materials International 2005年第11期15卷 1005-1013页

作者： ZHANG Bo, ZHANG Jinjiang, GUO Lei and WANG Weiliang (Department of Geology, School of earth and Space sciences, Peking university, Beijing 100871, china) Department of Geology School of Earth and Space Sciences Peking University Beijing 100871 China

The Yalashangbo dome, located at the eastern end of North Himalayan domes zone, has a geometry and structure similar to those of a metamorphic core complex. Ductile shear zones formed the detachment system around the dome and these zones are composed of garnet-bearing phyllonite, mylonitic schist, mylonitic gneiss and mylonitic granite. Ductile shear fabrics developed well in my-lonitic rocks, and penetrative lineation and foliation were formed by stretched quartz and feldspar and preferred orientation of mica. Polar Mohr diagram method is used to calculate the kinematic vorticity numbers of the shear zones in the detachment system. Results indicate that the shear zone is a thinned shear zone (thinning of 23 % ) in an extensional setting which underwent a general shear dominated by simple shear. Comparison of the vorticity numbers between the northern and southern flanks of the Yalashangbo dome shows that the dome is an asymmetric system formed by a north-northwest-directed detaching unanimously. Statistical fractal analysis shows that the shapes of dynamically recrystallized quartz grains in the mylonites have characteristics of self-similarity, with fractal numbers ranging from 1.05 to 1.18. From these fractal numbers, the strain rate of the rock was deduced from 10-9.2S-1 to 10-7.3S-1, the differential paleao-stress was 13.7-25.6 MPa during the deformation happened at a temperature over 500 ℃. The ductile shear zones in the detachment system around Yalashangbo dome were formed under a high green-schist grade condition or happened simultaneously with the intrusion of granite.

关键词： Yalashangbo dome ductile shear zone kinematic vorticity fractal analysis deformation temperature strain rate.

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Synthetically adaptive robust filtering for satellite orbit determination

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science china earth sciences 2004年第7期47卷 585-592页

作者： YANG Yuanxi1 & WEN Yuanlan2 1. Xi’an Research Institute of Surveying and Mapping, Xi抋’an 710054, china 2. college of Aerospace and Material Engineering, National university of Defense technology, Changsha 410073, china Xi’an Research Institute of Surveying and Mapping Xi’an China college of Aerospace and Material Engineering National University of Defense Technology Changsha China

The quality of the satellite orbit determination is rested on the knowledge of per-turbing forces acting on the satellite and stochastic properties of the observations, and the ability of controlling various kinds of errors. After a brief discussion on the dynamic and geometric orbit determinations, Sage adaptive filtering and robust filtering are reviewed. A new synthetically adaptive robust filtering based on a combination of robust filtering and Sage filtering is *** is shown, by derivations and calculations, that the synthetically adaptive robust filtering for orbit determination is not only robust but also simple in calculation. It controls the effects of the outliers of tracking observations and the satellite dynamical disturbance on the parameter esti-mates of the satellite orbit.

关键词： satellite orbit, Sage filtering, adaptive orbit determination, robust estimation.

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Research on the method for retrieving soil moisture using thermal inertia model

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science china earth sciences 2006年第5期49卷 539-545页

作者： LIU Zhenhua1 & ZHAO Yingshi2 1. Information college, South china Agricultural university, Guangzhou 510642, china 2. Graduate university of Chinese Academy of sciences, Beijing 100049, china Information college South China Agricultural University Guangzhou China Graduate university of Chinese Academy of sciences Beijing China

In order to improve accuracy of soil moisture inversion using remote sensing, a new thermal inertia model is proposed in this paper. The improved model needs only surface maximum temperature as the temperature parameter input instead of input of the surface temperature difference, as well as the surface sensible and latent fluxes are introduced into boundary conditions of thermal conductivity equation. Furthermore, surface soil conductive heat transfer equation of two-layer model is used to solve the soil thermal inertia so that the remote sensing thermal inertia method can be ap- plied to regions with better-covered vegetation, but usually only for the bare areas or worse vegetation covered areas. The model has been tested at several locations in the area of west Inner Mongolia. Comparing the simulation of the new model with the measurements obtained by apparent thermal inertia and by field test, the result shows that the inertia thermal model can be used to estimate soil moisture in more reasonable accuracy.

关键词： thermal model, thermal conductivity equation, soil initial, sensible flux, latent flux, two-layer model.

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Study on NDVI-T_s space by combining LAI and evapotranspiration

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science china earth sciences 2006年第7期49卷 747-754页

作者： HAN Lijuan1,2,3, WANG Pengxin4, YANG Hua1,2,3, LIU Shaomin1,2,3 & WANG Jindi1,2,3 1. Research Center for Remote Sensing and GIS, School of Geography, Beijing Normal university, Beijing 100875, china 2. State Key Laboratory of Remote Sensing science, Beijing 100875, china 3. Beijing Key Laboratory for Remote Sensing of Environment and Digital Cities, Beijing 100875, china 4. Department of Information Management, college of Information and Electronic Engineering, china Agricultural university, Beijing 100083, china Research Center for Remote Sensing and GIS School of Geography Beijing Normal University Beijing China State Key Laboratory of Remote Sensing science Beijing China Beijing Key Laboratory for Remote Sensing of Environment and Digital Cities Beijing China Department of Information Management College of Information and Electronic Engineering China Agricultural University Beijing China

This paper focuses on interpreting the different spatial relationships between NDVI and Ts, a triangular or a trapezoid, and on analyzing transformation conditions, the physical and ecological meanings of the vegetation index-surface temperature space as well. Further, we use the Tempera-ture-Vegetation Dryness Index (TVDI) to explain the existent meaning of a triangular space after NDVI reaches its saturated state by employing the relationships between NDVI, LAI and evapotranspiration. The specific relations between NDVI and Ts are useful for describing, validating and updating land surface models.

关键词： NDVI, land surface temperature, evapotranspiration, leave area index.

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Luminescence resonance energy transfer based on β-NaYF_4:Yb,Er nanoparticles and TRITC dye

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science china Chemistry 2009年第10期52卷 1590-1595页

作者： SUN LingDong, GU JianQin, ZHANG ShuZhuo, ZHANG YaWen & YAN ChunHua Beijing National Laboratory for Molecular sciences, State Key Lab of Rare earth Materials Chemistry and Applications & PKU-HKU Joint Lab in Rare earth Materials and Bioinorganic Chemistry, college of Chemistry and Molecular Engineering, Peking university, Beijing 100871, china Beijing National Laboratory for Molecular sciences State Key Lab of Rare Earth Materials Chemistry and Applications & PKU-HKU Joint Lab in Rare Earth Materials and Bioinorganic Chemistry College of Chemistry and Molecular Engineering Peking University Beijing China

β-NaYF4:Yb,Er nanoparticles (NPs) are one of the most efficient upconversion materials, which can convert near-infrared light to higher-energy light through multiple photon absorptions or energy transfer. In addition, they may be attractive alternative donors for luminescence resonance energy transfer (LRET) studies, because of their sharp absorption and emission profiles, high quantum yields, large anti-stokes shifts, long lifetime, low toxicity, and superior photo-stability. In principle, many problems of fluorescence resonance energy transfer (FRET), such as excitation of acceptors, emission overlaps between donors and acceptors, high background noise, potential toxicity, and instability, can be overcome using β-NaYF4:Yb,Er NPs as energy donors. Because the organic coating induced separation can significantly reduce the energy transfer efficiency and aqueous FRET system is difficult to be applied in devices, we demonstrate a novel NP-dye LRET system in solid state. The emission of the β-NaYF4:Yb,Er NPs at 539 nm overlaps with the absorption of the tetrametrylrhodarnine isothiocyante (TRITC), satisfying the requirement of LRET process. Since TRITC molecules are adsorbed on the β-NaYF4:Yb,Er NPs by an electrostatic interaction, the interaction distance is suitable for LRET without any further modulation. The resultant solid LRET system is ready for the further applications for devices.

关键词： upconversion emission β-NaYF4:Yb Er nanoparticles TRITC assembly luminescence resonance energy transfer (LRET)

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