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Laser probe ^(40)Ar/^(39)Ar dating of mica on the deformed rocks from Altyn Fault and its tectonic implications,western china

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chinese Science Bulletin 2001年第4期46卷 322-325页

作者： LIU Yongjiang, YE Huiwen, GE Xiaohong, CHEN Wen, LIU Junlai, REN Shoumai & PAN HongxunCollege of Earth sciences, changchun university of Science and Technology, changchun 130061, china graduate School, china university of Geosciences, beijing 100083, china Laboratory of Isotopic Geochronology, institute of Geology, Ministry of Land and Resources of china, beijing 100037, china College of Earth sciences Changchun University of Science and Technology Changchun China graduate School China University of Geosciences Beijing China Laboratory of Isotopic Geochronology Institute of Geology Ministry of Land and Resources of China Beijing China

The samples of Caledonian mylonitized granite and Jurassic meta-sedimentary rocks were collected in the north of Dangjinshan Pass, Qaidam gate fault-valley and Gesi fault-valley. Detailed studies under the microscope and electronic microscope suggest that all the samples contain the syntectonic-growing minerals such as white mica, chlorite, sericite, biotite, etc. By dating these minerals, we got a group of 40Ar/39Ar laser probe isochronal ages of 89-92 Ma and apparent ages of (46.6±6.4) Ma. The ages ranging from 97 to 46 Ma were reported for the first time in the isotopic dating researches of the Altyn Fault The isochronal age group of (98-89) Ma indicates that a ductile strike-slip event, with low-grade metamorphism, began in late Cretaceous. This suggests that the strike-slip movement of the Altyn Fault should be related to the formation of the so-called west tectonic syntaxis in the Nepal-western Kunlun area.

关键词： Altyn Fault 40Ar/39Ar age strike-slip movement.

Effect of Long-Term Rice Straw Return on Soil Glomalin, Carbon and Nitrogen

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Pedosphere 2007年第3期17卷 295-302页

作者： NIE Jun ZHOU Jian-Min WANG Huo-Yan CHEN Xiao-Qin DU Chang-Wen institute of Soil Science Chinese Academy of Sciences Nanjing 210008 （China） Soil and Fertilizer institute of Hunan Changsha 410125 （China） graduate university of chinese academy of sciences Beijing 100049 （China）

A long-term experiment was conducted to investigate how long-term fertilization and rice straw incorporation into soil affect soil glomalin, C and N. The combined application of chemical fertilizer and straw resulted in a significant increase in both soil easily extractable glomalin (EEG) and total glomalin (TG) concentrations, as compared with application of only chemical fertilizer or no fertilizer application. The EEG and TG concentrations of the NPKS (nitrogen, phosphorus, and potassium fertilizer application + rice straw return) plot were 4.68% and 5.67% higher than those of the CK (unfertilized control) plot, and 9.87% and 6.23% higher than those of the NPK (nitrogen, phosphorus, and potassium fertilizer applied annually) plot, respectively. Application of only chemical fertilizer did not cause a statistically significant change of soil glomalin compared with no fertilizer application. The changes of soil organic C (SOC) and total N (TN) contents demonstrated a similar trend to soil glomalin in these plots. The SOC and TN contents of NPKS plot were 15.01% and 9.18% higher than those of the CK plot, and 8.85% and 14.76% higher than those of the NPK plot, respectively. Rice straw return also enhanced the contents of microbial biomass C (MBC) and microbial biomass N (MBN) in the NPKS plot by 7.76% for MBC and 31.42% for MBN compared with the CK plot, and 12.66% for MBC and 15.07% for MBN compared with the NPK plots, respectively. Application of only chemical fertilizer, however, increased MBN concentration, but decreased MBC concentration in soil.

关键词： C glomalin long-term fertilizer experiment N rice straw return

Colony development and physiological characterization of the edible blue-green alga,Nostoc sphaeroides (Nostocaceae,Cyanophyta)

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Progress in Natural Science:Materials International 2008年第12期18卷 1475-1483页

作者： Zhongyang Deng~(a,c,d,e) Qiang Hu~b Fan Lu~c Guoxiang Liu~a Zhengyu Hu~a a State Key Laboratory of Freshwater Ecology and Biotechnology,institute of Hydrobiology,chinese academy of sciences,Wuhan 430072,china b Department of applied Biological sciences.Arizona State university,Polytech Campus,ISTBⅢ,Mesa,AZ 85212,USA c Algaen Corporation,925 West Northwest Boulevard,Winston Salem,NC 27101.USA d Department of Biology,Hubei Normal university,Huangshi 435002,china e graduate School of the chinese academy of sciences.beijing 100049,china State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences Wuhan 430072 China Algaen Corporation 925 West Northwest Boulevard Winston Salem NC 27101 USA Department of Biology Hubei Normal University Huangshi 435002 China graduate School of the chinese academy of sciences Beijing 100049 China Department of applied Biological sciences Arizona State University Polytech Campus ISTB III Mesa AZ 85212 USA

The edible blue-green alga,Nostoc sphaeroides K(?)tzing,is able to form microcolonies and spherical *** has been used as a potent herbal medicine and dietary supplement for centuries because of its nutraceutical and pharmacological ***,lim- ited information is available on the development of the spherical macrocolonies and the environmental factors that affect their structure. This report described the morphogenesis of *** from single trichomes to *** the process,most structural features of macrocolonies of various sizes were dense maculas,rings,the compact core and the formation of liquid core;and the filaments within the macrocolonies showed different lengths and arrays depending on the sizes of *** temperature and light intensity also strongly affected the internal structure of *** microcolonies further increased in size to form 30 mm mac- rocolonies,the colonies differentiated into distinct outer,middle and inner *** filaments of the outer layer showed higher max- imum photosynthetic rates,higher light saturation point,and higher photosynthetic efficiency than those of the inner layer;whereas the filaments of the inner layer had a higher content of chlorophyll a and phycobiliproteins than those of the outer *** results obtained in this study were important for the mass cultivation of *** as a nutraceutical product.

关键词： Macrocolony Morphogenesis Nostoc sphaeroides Photosynthesis

Single Cell Level Assessment of the Relationship between the Morphology and the Antibacterial Activity of ZnO Nanowire Arrays

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Single Cell Level Assessment of the Relationship between the...

The Eleventh International and the First Sino-Japan Bilateral Symposium on Electroanalytical chemistry

作者： Xiaolei WANG~(12) Fan YANG~1 Xiurong YANG~1 1 State Key Laboratory of Electroanalytical chemistry,changchun institute of applied chemistry,chinese academy of sciences,Remin Street 5625,changchun Jilin 130022 china 2 graduate School of the chinese academy of sciences,beijing,100039,china

The application of ZnO nanoparticles to prevent growth of detrimental microorgnisms is a highly desired *** antibacterial activity of ZnO is considered to be due to the generation of hydrogen peroxide（HO）from its **...

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Schiff-base Aluminum Complexes and Their Application in the stereoselective Polymerization of racemic-lactide

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Schiff-base Aluminum Complexes and Their Application in the ...

第三届工程塑料国际学术研讨会

作者： Xuan Pang1,2, Hongzhi Du1,2, Xuesi Chen*1, Lili Ma1,Xiuli Zhuang and Xiabin Jing1 1 State Key Laboratory of Polymer Physics and chemistry, changchun institute of applied chemistry, chinese academy of sciences, changchun 130022 2 graduate School of chinese academy of sciences, chinese academy of sciences, beijing 100039, P. R. china

＜正＞Introduction Biodegradable polyesters have found a wide range of applications, such as sutures, bone fracture fixation devices, drug controlled release carriers, tissue engineering scaffolds and green plastics f...

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Surface roughness length dynamic over several different surfaces and its effects on modeling fluxes

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Science china Earth sciences 2006年第S2期49卷 262-272页

作者： ZHOU Yanlian, SUN Xiaomin, ZHU Zhilin, ZHANG Renhua, TIAN Jing, LIU Yunfen, GUAN Dexin & YUAN Guofu Key Laboratory of Ecosystem Network Observation and Modeling, institute of Geographic sciences and Natural Resources Research, chinese academy of sciences, beijing 100101, china graduate university of the chinese academy of sciences, beijing 100049, china institute of applied Ecology, chinese academy of sciences, Shenyang 110016, china

Roughness length and zero-plane displacement over three typical surfaces were calculated iteratively by least-square method, which are Yucheng Experimental Station for agriculture surfaces, Qianyanzhou Experimental Station for complex and undulant surfaces, and Changbai Mountains Experimental Station for forest surfaces. On the basis of roughness length dynamic, the effects of roughness length dynamic on fluxes were analyzed with SEBS model. The results indicate that, aerodynamic roughness length changes with vegetation conditions (such as vegetation height, LAI), wind speed, friction velocity and some other factors. In Yucheng and Changbai Mountains Experimental Station, aerodynamic roughness length over the fetch of flux tower changes with vegetation height and LAI obviously, that is, with the increase of LAI, roughness length increases to the peak value firstly, and then decreases. In Qianyanzhou Experimental Station, LAI changes slightly, so the relationship between roughness length and LAI is not obvious. The aerodynamic roughness length of Yucheng and Changbai Mountains Experimental Station changes slightly with wind direction, while aerodynamic roughness length of Qianyanzhou Experimental Station changes obviously with wind direction. The reason for that is the terrain in Yucheng and Changbai Mountains Experimental Station is relatively flat, while in Qianyanzhou Experimental Station the terrain is very undulant and heterogeneous. With the increase of wind speed, aerodynamic roughness length of Yucheng Experimental Station changes slightly, while it decreases obviously in Qianyanzhou Experimental Station and Changbai Mountains Experimental Station. Roughness length dynamic takes great effects on fluxes calculation, and the effects are analyzed by SEBS model. By comparing 1 day averaged roughness length in Yucheng Experimental Station and 5 day averaged roughness length of Qianyanzhou and Changbai Mountains Experimental Station with roughness length parameter

关键词： chinaFLUX surface roughness length dynamic spatial heterogeneity Yucheng Experimental Station Qianyanzhou Experimental Station Changbai Mountains Experimental Station.

A New Two-Parameter Formula for Rotational Spectra

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chinese journal of nuclear physics 1995年第4期17卷 322-327页

作者： Zeng Guo-mo1,2 Liu Wei1 Zhao En-guang21 Department of Physics, Jilin university, changchun 1300232 institute of Theoretical Physics, the chinese academy of sciences, P. O. Box 2735, beijing 100080 吉林大学物理系吉林长春中科院理论物理所北京

A new two-parameter formula for the rotational spectra of well deformed nuclei isproposed. The formula is deduced from experimental level systematics and alternatively fromnuclear hydrodynamics. Comparisons with a great number of rotational spectra of even-even nu-clei in rare-earth and actinides region show that the formula is the best one among all two-pa-rameter formulas. It is pointed out that this formula can be applied to the spin assignment forsuperdeformed band.

关键词： Two-parameter formula Rotational spectra Nuclear hydrodynamics

Seasonal variation of carbon exchange of typical forest ecosystems along the eastern forest transect in china

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Science china Earth sciences 2006年第S2期49卷 47-62页

作者： ZHANG Leiming, YU Guirui, SUN Xiaomin, WEN Xuefa, REN Chuanyou, SONG Xia, LIU Yunfen, GUAN Dexin, YAN Junhua & ZHANG Yiping Synthesis Center of chinese Ecosystem Research Network (CERN), institute of Geographic sciences and Natural Resources Research, chinese academy of sciences, beijing 100101, china institute of applied Ecology, chinese academy of sciences, Shenyang 110016, china South china institute of Botany, chinese academy of sciences, Guangzhou 510650, china Xishuangbanna Tropical Botanical Garden, chinese academy of sciences, Kunming 650223, china graduate university of chinese academy of sciences, beijing 100049, china

The long-term and continuous carbon fluxes of Changbaishan temperate mixed forest (CBS), Qianyanzhou subtropical evergreen coniferous forest (QYZ), Dinghushan subtropical evergreen mixed forest (DHS) and Xishuangbana tropical rainforest (XSBN) have been measured with eddy covariance techniques. In 2003, different responses of carbon exchange to the environment appeared across the four ecosystems. At CBS, the carbon exchange was mainly determined by radiation and temperature. 0℃and 10℃were two important temperature thresholds; the former determined the length of the growing season and the latter affected the magnitude of carbon exchange. The maximum net ecosystem exchange (NEE) of CBS occurred in early summer because maximum ecosystem photosynthesis (GPP) occurred earlier than maximum ecosystem respiration (Rθ). During summer, QYZ experienced severe drought and NEE decreased significantly mainly as a result of the depression of GPP. At DHS and XSBN, NEE was higher in the drought season than the wet season, especially the conversion between carbon sink and source occurring during the transition season at XSBN. During the wet season, increased fog and humid weather resulted from the plentiful rainfall, the ecosystem GPP was dispressed. The Q10 and annual respiration of XSBN were the highest among the four ecosystems, while the average daily respiration of CBS during the growing season was the highest. Annual NEE of CBS, QYZ, DHS and XSBN were 181.5, 360.9, 536.2 and -320.0 g·C·m-2·a-1, respectively. From CBS to DHS, the temperature and precipitation increased with the decrease in latitude. The ratio of WEE/Rθincreased with latitude, while Rθ/Gpp, ecosystem light use efficiency (LUE), precipitation use efficiency and average daily GPP decreased gradually. However, XSBN usually escaped such latitude trend probably because of the influence of the south-west monsoon climate which does not affect the other ecosystems. Long-term measurement and more research were necessary t

关键词： forest transect carbon budget ecosystem photosynthesis ecosystem respiration china-FLUX eddy covariance.

Synthesis of Dialkyl Yttrium Complex Supported by Heteroscorpionate Ligand

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Synthesis of Dialkyl Yttrium Complex Supported by Heteroscor...

第十六届全国金属有机化学学术讨论会

作者： Zhichao Zhang~(1,2) and Dongmei Cui~1 1 State Key Laboratory of Polymer Physics and chemistry,changchun institute of applied chemistry,chinese academy of sciences,changchun 130022,People’s Republic of china. 2 graduate School of the chinese academy of sciences,beijing 100039,People’s Republic of china.

Synthesis of stable dialkyl rare-earth metal complexes bearing anionic ancillary ligand has been one of the most important research subjects in the past decades since some of these complexes display high selectivity a...

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