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| 1 | 濒危植物南方红豆杉种群生命表及谱分析显示文摘Based on the investigation in Longxi Mountain National Nature Reserve and the theory of survival analysis,a static life table of Taxus chinensis var. mairei population was worked out,the curves of its survival rate,mortality rate and killing power were drawn,and the population dynamics was analyzed by spectral analysis.The results showed that the survival curve of the population appeared to be a type of Deevey Ⅲ,and the high mortality of seeding was one of the important reasons which caused Taxus chinensis var. mairei to be endangered.The spectral analysis of the population showed that there was a marked periodic regularity in the process of natural regeneration of Taxus chinensis var. mairei . | 洪伟 王新功 吴承祯 何东进 廖成章 程煜 封磊 | 2004 | 应用生态学报2004，15，6： | 146 |
| 2 | Hydroxyl in continental deep subduction zone: Evidence from UHP eclogites of the Dabie Mountains显示文摘Infrared spectra in the region of 3 000 to 4 000 cm-1 have been measured by an FTIR spectrometer on minerals in UHP eclogites from the Bixiling and Shuanghe areas, the Dabie Mountains. It is shown that omphacite is the most important hydrous mineral (100-200 μg/g) in UHP eclogites. Garnet and quartz contain virtually no H2O or OH. Accessory mineral rutile contains a significant amount of OH (>1 000 μg/g). Coesite gives no indication of the presence of OH but apparent H2O bands. The results have considerable implications for existing forms and contents of hydroxyl in the continental deep subduction zone, the eastern Dabie Mountains. | HarryW.Green | 2001 | Chinese Science Bulletin2001，46，7： | 28 |
| 3 | Quantitative analyses of relationships between ecotoxicological effects and combined pollution显示文摘The responses of wheat Triticum aestivum, rice Oryza sativa, earthworms Eisenia foetida, and prawns Penaeus japonicus to combined acetochlor-Cu, Cd-Zn were studied in hy-droponic and soil-culturing systems using the methods of ecotoxicology. In particular, system-atically quantitative analyses were documented by field experiments. Results showed that ecotoxicological effects under the combined pollution were not only related to chemical proper-ties of pollutants but also dependent on the concentration level of pollutants, in particular on the combination of concentrations of pollutants in ecosystems. Additionally, species of organisms, especially the type of ecosystem, determined the influences. To some extent, biological tissue targets attacked by pollutants were an important factor. | ZHOU Qixing CHENG Yun ZHANG Qianru LIANG Jidong | 2004 | Science China(Life Sciences)2004，47，4： | 20 |
| 4 | Vertical structures of PM_(10) and PM_(2.5) and their dynamical character in low atmosphere in Beijing urban areas显示文摘The vertical structures and their dynamical character of PM2.5 and PM10 over Beijing urban areas are revealed using the 1 min mean continuous mass concentration data of PM2.5 and PM10 at 8, 100, and 320 m heights of the meteorological observation tower of 325 m at Institute of Atmospheric Physics, Chinese Academy of Sciences (IAP CAS tower hereafter) on 10―26 August, 2003, as well as the daily mean mass concentration data of PM2.5 and PM10 and the continuous data of CO and NO2 at 8, 100 (low layer), 200 (middle layer), and 320 m (high layer) heights, in combination with the same period meteorological field observation data of the meteorological tower. The vertical distributions of aerosols observed on IAP CAS tower in Beijing can be roughly divided into two patterns: gradually and rapidly decreasing patterns, I.e. The vertical distribution of aerosols in calm weather or on pollution day belongs to the gradually decreasing pattern, while one on clean day or weak cold air day belongs to the rapidly decreasing pattern. The vertical distributive characters of aerosols were closely related with the dynamical/thermal structure and turbulence character of the atmosphere boundary layer. On the clean day, the low layer PM2.5 and PM10 concentrations were close to those at 8 m height, while the concentrations rapidly decreased at the high layer, and their values were only one half of those at 8 m, especially, the concentration of PM2.5 dropped even more. On the clean day, there existed stronger turbulence below 150 m, aerosols were well mixed, but blocked by the more stronger inversion layer aloft, and meanwhile, at various heights, especially in the high layer, the horizontal wind speed was larger, resulting in the rapid decrease of aerosol concentration, I.e. Resulting in the obvious vertical difference of aerosol concentrations between the low and high layers. On the pollution day, the concentrations of PM2.5 and PM10 at the low, middle, and high layers dropped successively by, on average, about 10% for each layer in comparison with those at 8 m height. On pollution days, in company with the low wind speed, there existed two shallow inversion layers in the boundary layer, but aerosols might be, to some extent, mixed below the inversion layer, therefore, on the pollution day the concentrations of PM2.5 and PM10 dropped with height slowly; and the observational results also show that the concentrations at 320 m height were obviously high under SW and SE winds, but at other heights, the concentrations were not correlated with wind directions. The computational results of footprint analysis suggest that this was due to the fact that the 320 m height was impacted by the pollutants transfer of southerly flow from the southern peripheral heavier polluted areas, such as Baoding, and Shijiazhuang of Hebei Province, Tianjin, and Shandong Province, etc., while the low layer was only affected by Beijing's local pollution source. The computational results of power spectra and periods preliminarily reveal that under the condition of calm weather, the periods of PM10 concentration at various heights of the tower were on the order of minutes, while in cases of larger wind speed, the concentrations of PM2.5 and PM10 at 320 m height not only had the short periods of minute-order, but also the longer periods of hour order. Consistent with the conclusion previously drawn by Ding et al., that air pollutants at different heights and at different sites in Beijing had the character of 'in-phase' variation, was also observed for the diurnal variation and mean diurnal variation of PM2.5 and PM10 at various heights of the tower in this experiment, again confirming the 'in-phase' temporal/spatial distributive character of air pollutants in the urban canopy of Beijing. The gentle double-peak character of the mean diurnal variation of PM2.5 and PM10 was closely related with the evident/similar diurnal variation of turbulent momentum fluxes, sensible heat fluxes, and turbulent kinetic energy at various heights in the urban canopy. Besides, under the condition of calm weather, the concentration of PM2.5 and PM10 declined with height slowly, it was 90% of 8 m concentration at the low layer, a little lesser than 90% at the middle layer, and 80% at the high layer, respectively. Under the condition of weak cold air weather, the concentration remarkably dropped with height, it was 70% of 8 m concentration at the low layer, and 20%―30% at the middle and high layers, especially the concentration of PM2.5 was even lower. | CHAN Chuenyu LI Yoksheung WONG Kamhang | 2005 | Science China Earth Sciences2005，48，z2： | 18 |
| 5 | A new method for judging the computational stability of the difference schemes of nonlinear evolution equations显示文摘For the non-conservative difference schemes of nonlinear evolution equations with aperiodic boundary conditions, taken one-dimensional nonlinear advection equation as an example, a new method for judging the computational stability is given. It is proved to be practical and effective through several numerical examples. The stability criteria obtained by this method are really the necessary conditions of computational stability. | LIN Wantao Jl Zhongzhen WANG Bin YANG Xiaozhong | 2000 | Chinese Science Bulletin2000，45，15： | 18 |
| 6 | Distribution of C_4 plants along the Northeast China transect and its correlation to the environmental factors显示文摘The distribution of C4 plants and the C4/C3 ratio along Northeast China transect (NECT) have been studied. A model to quantify their relation with environmental factors has been set up. The ratio of the number of C4 plants to that of C3 plants along NECT shows two low and two high trends from east to west, and their distribution is mainly decided by annual average temperature and precipitation. | TANG HaipingOpen Research Laboratory of Environmental Changes and Natural Disaster of the Ministry of National Education, Beijing Normal University , Beijing 100875, Laboratory of Quantitative Vegetation Ecology , Institute of Botany , Chinese Academy of Sciences , Beijing 100093, China | 1999 | Chinese Science Bulletin1999，44，14： | 16 |
| 7 | Gene cloning and function analysis of ABP9 protein which specifically binds to ABRE2 motif of maize Cat1 gene显示文摘A cDNA library was constructed using mRNA extracted from 17 days post-pollination (dpp) maize embryos and was screened by employing a yeast one-hybrid system for proteins specifically interacting with ABRE2 motif of maize Call gene. Three truncated overlapping positive clones designated ABP9 were obtained and the full-length cDNA was isolated by 5’ RACE. Searching the database revealed that ABP9 protein belongs to a bZIP-type transcription factor family. ABP9 protein speciflcally binds to ABRE2 motif and activates the expression of downstream reporter gene in yeast cells. Our results strongly suggest that the ABP9 protein functions as a transcription activator. | Lei Wang Jun Zhao Yunliu Fan | 2002 | Chinese Science Bulletin2002，47，22： | 14 |
| 8 | QTL analysis of rice low temperature germinability显示文摘A double haploid population, derived from anther culture of F, hybrid between a typical indica and a japonica (ZYQ8/JX17), has been used to investigate the low temperature germinability (LTG) at 15℃. The low temperature germinability of two parents was significantly different. In 6-11 d, the germination percentage of ZYQ8 was higher than that of JX17. In 12-16 d, the germination percentage of JX17 was higher than that of ZYQ8. The quantitative trait loci (QTLs) of every day for low temperature germinabilityhave been mapped based on a molecular linkage map constructed from this population. In 8-11 d, qLTG-9 was identified in C397B-RZ617B on chromosome 9, the additive effect was positive, showing that, the allele from JX17 could increase low temperature germinability. In 12-16 d, qLTG-4 was mapped between RG908 and CT563 on chromosome 4, the additive effect was negative, showing that the allele from ZYQ8 could increase low temperature germinability. These two QTLs were detected at different stages, | TENG Sheng ZENG Dali QIAN Qian Kunihifo Yasufumi HUANG Danian Zhu Lihuang | 2001 | Chinese Science Bulletin2001，46，21： | 14 |
| 9 | Characteristics of rare earth elements and cerium anomalies in cherts from the Paleo-Tethys in Changning-Menglian belt in western Yunnan, China显示文摘Based on research on rare earth elements (REEs) and cerium anomalies in cherts from the Paleo-Tethys, their depositional environments are shown and the evolution of the Paleo-Tethys is traced. The amount of terrigenous, biogenic and hydrothermal inputs are the important factors that affect the REEs composition of the cherts. | 丁林 钟大赉 | 1996 | Science China Earth Sciences1996，39，1： | 12 |
| 10 | Genetic analysis of morphological index and its related taxonomic traits for classification of indica/japonica rice显示文摘A doubled haploid population derived from anther culture of ZYQ8/JX17 F1, a typical indica and japonica hybrid, was used in this study. Morphological index and its related taxonomic traits were investigated in 121 DH lines. The quantitative trait loci (QTLs) for morphological index and its related taxonomic traits were analyzed. Two major QTLs for leaf hairiness, three QTLs for length/width of grain, one QTL for color of hull when heading, one QTL for hairiness of hull, two QTLs for length of the first and second panicle internode, and one major QTL and two QTLs for phenol reaction were detected. Four QTLs for morphological index were also identified on chromosomes 1, 3, 4 and 6, respectively, three of which on chromosomes 1, 3 and 6, respectively, were found to be located in the same chromosome regions where some QTLs for the related taxonomic traits were located. | 钱前 何平 郑先武 陈英 朱立煌 | 2000 | Science China(Life Sciences)2000，43，2： | 12 |
| 11 | Comprehensive comparison and analysis of the tidal gravity observations obtained with superconducting gravimeters at stations in China,Belgium and France显示文摘The long-term tidal gravity observations of about 27 a obtained with superconducting gravimeters (SG) at stations in Wuhan (China), Brussels (Belgium) and Strasbourg (France) are analyzed comprehensively. The quality factors of these observations at various stations are obtained and the tidal parameters are determined accurately. The efficiency when using various procedures on improving accuracy of the tidal parameters is discussed. The loading corrections on tidal parameters are carried out based on the global ocean tidal models. The correlations between the observed residuals and air pressure change are studied, the atmospheric gravity admittances in both temporal and frequency domains are determined, and the possible reasons of inducing the discrepancy between the observed tidal parameters and those in the standard tidal models are studied. | Ducarme B Hinderer J | 1999 | Chinese Science Bulletin1999，44，8： | 11 |
| 12 | Origin of natural sulphur-bearing immiscible inclusions and H_2S in oolite gas reservoir, Eastern Sichuan显示文摘Based on results of microscopic observation and laser Raman analysis about fluid in- clusions, multiple special forms of immiscible inclusions that contain sulphur, liquid hydrocarbon, bi- tumen, etc. were discovered in samples collected from the H2S gas reservoir-containing carbonates in the Lower Triassic Feixianguan Formation in the Jinzhu-Luojia area, Kai County, Sichuan Province. Based on the lithology and burial history of the strata involved as well as measurement results of homogenization temperature of fluid inclusions, bitumen reflectivity, etc., it is concluded that the H2S in the gas reservoir resulted from the thermal reaction between hydrocarbons in reservoir and CaSO4 in the gypsum-bearing dolostone section at the high temperature (140℃―170℃) oil-cracked gas for- mation stage in Late Cretaceous. Thereafter, research on a great number of immiscible inclusions in the reservoir reveals that elemental sulphur resulted from oxidation of part of the earlier-formed H2S and further reaction between sulphates, hydrocarbons and H2S in geological fluids in H2S-bearing gas reservoir at a temperature of 86℃―89℃ and a pressure of 340×105Pa and during the regional uplift stage as characterized by temperature decrease and pressure decrease in Tertiary. Meanwhile, gyp- sum, anhydrite and calcite formed at this stage would trap particles like elemental sulphur and result in a variety of special forms of immiscible inclusions, and these inclusions would contain information concerning the complexity of the fluids in the reservoir and the origin of H2S and natural sulphur in the gas reservoir. | LIU Dehan XIAO Xianming XIONG Yongqiang GENG Ansong TIAN Hui PENG Ping'an SHEN Jiagui WANG Yunpeng | 2006 | Science China Earth Sciences2006，49，3： | 10 |
| 13 | DYNAMIC VARIATIONS OF WATER QUALITY IN TAIHU LAKE AND MULTIVARIATE ANALYSIS OF ITS INFLUENTIAL FACTORS显示文摘Dynamic variation of water quality in Meiliang Bay and part of West Taihu Lake has been analysed based on data from 1991 to 1992. Principal Component Analysis is used to reveal the mutual relationships of various factors. It is shown that there existis an obvious spatial and temporal variation in the main factors of water quality. Annual values of TP, CON, TN, Chl-a and conductivity decrease evidently from inner Meiliang Bay to the outer from north to south. TP and TN fluctuate seasonally with much higher value in winter. This is particularly true for the mouth of Liangxi River. In addition, the Chl-1 has a synchronous variation with water temperature, although being lagged a little, and closely relates to TP and TN. Finally, the results from Principal Component Analysis show that TP, TN, SS (or SD), water temperature and Chl-a are the most influential factors to water qualuty in this area, and both suspensions and algae can contribute to transparency to Taihu Lake. | Cai Qiming Gao Xiyun Chen Yuwei Ma Shengwei Nanjing Institute of Geography and Limnology, CAS, Nanjing 210008 People’s Republic of ChinaMartin Dokulil Institute of Limnology, Austria | 1997 | Journal of Geographical Sciences1997，7，3： | 9 |
| 14 | Anomalous activity of East Asian winter monsoon and the tropical Pacific SSTA显示文摘The relationship between the anomalous East Asian winter monsoon (EAWM) activity and the tropical Pacific SST anomalies has been identified using the results of 40-year integration of the IAP CGCM1 model and 10-year observational data, In the strong EAWM year, the western and central Pacific are dominated by positive SST anomalies while the eastern Pacific is negative ones. In the weak EAWM year, the SSTA pattern is quite different and shows El Nio-like SSTanomalies. The strong EAWM activity tends to create extra easterly flow to the east and extra westerly flow to the west of the warm SSTA region over the equatorial western and central Pacific, thus leading to the enhancement of convergence and convection of the flow in this region and favorable to the maintenance and development of such an SSTA pattern. On the other hand, the warm SST anomaly over the western and central Pacific, as a forcing, may lead to a specific pattern of the northern extratropical atmosphere, which is favorable to the strong | Cholaw Bueh Liren Ji | 1999 | Chinese Science Bulletin1999，44，10： | 8 |
| 15 | Using repeated precise gps campaigns for research of present-day crustal movement and strain in the Qinghai-Tibetan Plateau显示文摘The problem of crustal movement in the Qing-hai-Tibetan Plateau is a hotstopic of the present-day international geodetic world. GPS observations in 1993, 1995 and 1997 are used to survey the three-dimensional displacement of GPS monitoring station in the Qinghai-Tibetan Plateau, and to calculate and analyze the present-day crustal movement and strain in the Qinghai-Tibetan Plateau. The result of repeated campaign shows that the crustal movement in the Qinghai-Tibetan Plateau is still compressing in the north and south directions, extending in the west and east directions, and uplifting in the vertical direction. The relative convergence velocity of the Himalayan block is approximately (19.5±1.7)mm/a, the strain velocity is about (5.5±6.0) mm/a, and the uplifting velocity is some (7.6±5.2) mm/a. The compression velocity of the Tibet block relative to Golmud in the north and south directions is (9.3±4.6) mm/a, the strain velocity of the middle part in the west and east directions is (15.6±6.3) mm/a, | LIU Jingnan XU Caijun SONG Chenghua SHI Chuang JIANG Weiping DONG Lixiang | 2001 | Chinese Science Bulletin2001，46，8： | 8 |
| 16 | miR164c and miR168a regulate seed vigor in rice^∞显示文摘Micro RNAs(miRNAs)are key regulators of gene expression in many important biological processes of plants.However,few miRNAs have been shown to regulate seed vigor.Here,we conducted microarray assays to analyze miRNA expression levels in seeds of the rice(Oryza sativa L.)cultivar ZR02.Results showed significant differences in the expression of 11 miRNAs between artificially aged and untreated control seeds.Among these,osa-miR164c was transcriptionally upregulated,while osamiR168 a was downregulated in artificially aged seeds;this was verified by quantitative real-time PCR analysis.Under the same aging condition,osa-miR164c overexpression in OE164c transgenic seeds and osa-miR168a silencing in MIM168a transgenic seeds of the rice cultivar Kasalath led to lower germination rates,whereas osa-miR164c silencing Rin MIM164c and osa-miR168a overexpression in OE168a resulted in higher seed germination rates compared with wild-type seeds.Meanwhile,changes in cytomembrane permeability of seeds and in the expression level of osa-miR164c target genes(OsPM27 and OsPSK5)and osamiR168a target genes(OsAGO1 and OsPTR2)under aging conditions coincided with changes in seed vigor induced by osa-miR164c and osa-miR168 a.Thus,genetic manipulation of miRNAs has important implications in the development of crop cultivars with high vigor and extended life span of seeds. | Yan Zhou Shiqi Zhou Liping Wang Duo Wu Hailan Cheng Xu Du Dandan Mao Chunlai Zhang Xiaocheng Jiang | 2020 | Journal of Integrative Plant Biology2020，62，4： | 7 |
| 17 | Sequence analysis of lacZ^- mutations induced by ion beam irradiation in double-stranded M13mp18DNA显示文摘While M13mpl8 double-stranded DNA was irradiated with ion beam, and transfected into E. coli JM103, a decrease of transfecting activity was discovered. The lacZ-mutation frequency at 20% survival could reach (3.6-16.8) × 104, about 2.3-10 times that of unirradiated M13DNA. Altogether, 27 lacZ~ mutants were select-ed, 10 of which were used for sequencing. 7 of the sequenced mutants show base changes in 250-bp region examined (the remaining 3 mutants probably have base changes outside the regions sequenced). 5 of the base-changed mutants contain more than one mutational base sites (some of them even have 5-6 mutational base sites in 250-bp region ex-amined) ; this dense distribution of base changes in polysites has seldom been seen in X-rays, γ-rays or UV induced DNA mutations. Our experiments also showed that the types of base changes include transitions( 50 % ), transversions (45% ) and deletion (5% ); no addition or duplication was observed. The transitions were mainly C→T and A→G; the | 杨剑波 吴李君 李莉 吴家道 余增亮 许智宏 | 1997 | Science China(Life Sciences)1997，40，1： | 7 |
| 18 | LEAST-SQUARES MIXED FINITE ELEMENT METHODS FOR NONLINEAR PARABOLIC PROBLEMS显示文摘Two least-squares mixed finite element schemes are formulated to solve the initial-boundary value problem of a nonlinear parabolic partial differential equation and the convergence of these schemes are analyzed. | Dan-ping Yang (School of Mathematics and System Science, Shandong University, Jinan 250100, China) | 2002 | Journal of Computational Mathematics2002，20，2： | 7 |
| 19 | Treating ischaemic stroke with intravenous tPA beyond 4.5 hours under the guidance of a MRI DWI/T2WI mismatch was safe and effective显示文摘Purpose Clinical trials have provided evidence that treating patients with acute ischaemic stroke(AIS)beyond 4.5 hours was feasible.Among them using MRI diffusion-weighted imaging/fluid attenuation inversion response(DWI/FLAIR)mismatch to guide intravenous tissue plasminogen activator(tPA)was successful.Our study explored the outcome and safety of using DWI/T2-weighted imaging(T2WI)mismatch to guide intravenous tPA therapy for patients with AIS between 4.5 hours and 12 hours of onset.Method This was a retrospective study.Records of 1462 AIS patients with the time of onset of<12 hours were reviewed.Those had MRI rapid sequence study and had hyperintense signal on DWI but normal T2WI and received intravenous tPA up to 12 hours of onset were included in the analysis.Their demographics,risk factors,post-tPA complications,National Institutes of Health Stroke Scale(NIHSS)scores and outcome were recorded and analyse.χ2 was used to compare the intergroup variables.SAS was used to perform statistical calculation.A p<0.05 was considered statistically significant.results Of 1462 identified,601(41%)patients were entered into the final analysis.Among them,327(54%)had intravenous tPA within 4.5 hours of onset and 274(46%)were treated between 4.5-12 hours.After intravenous tPA,426 cases(71%)had>4 pints of improvement on NIHSS score within 24 hours.Postintravenous tPA,32(5.32%)cases had haemorrhagic transformation.26(4.33%)were asymptomatic ICH and 4(0.67%)died.At 90 days,523(87%)achieved a modified Rankin scale of 0-2.Conclusion Using MRI DWI/T2WI mismatch to identify patients with AIS for intravenous tPA between 4.5 hours and 12 hours was safe and effective.The outcome was similar to those used DWI/PWI or DWI/FLAIR mismatch as the screening tool.However,obtaining DWI/T2WI was faster and avoided the need of contrast material. | Qing-ke Bai Zhen-guo Zhao Lian-jun Lu Jian Shen Jian-ying Zhang Hai-jing Sui Xiu-hai Xie Juan Chen Juan Yang Cui-rong Chen | 2019 | Stroke & Vascular Neurology2019，4，1： | 6 |
| 20 | Special hybrid stress element for stress analyses around circular cutouts in laminated composites显示文摘A 3-dimensional hybrid stress element with a traction-free cylindrical surface based on amodified complementary energy principle has been derived for efficient and accurate analysis of stressconcentration around circular cutouts in thin to thick laminated composites. New expressions of sixstress components are developed by using three stress-functions in cylindrical co-ordinates, so that thehomogeneous equilibrium equations, the interlayer surface transverse-stresses and the traction-freeboundary condition on the cylindrical surface are satisfied exactly, while the interelement traction conti-nuity has been relaxed via the Lagrange multiplier method. Transverse-shear deformation effects areincorporated in each layer with displacement continuity enforced along interlayer surface. Selected ex-amples are used to demonstrate the efficiency and accuracy of the present special element. | 田宗漱 赵奉东 田铮 | 2001 | Science China(Technological Sciences)2001，44，5： | 6 |
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