|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Shortened Basal Internodes Encodes a Gibberellin 2-Oxidase and Contributes to Lodging Resistance in Rice显示文摘改进住宿抵抗的繁殖半矮子变化被证明了在自从绿 revolution.?However 的来临,增加谷物产量极其成功,在亚洲繁殖半矮子米饭变化的多数主要依赖于 SD1 的变异的等位基因的基因介绍,它编码赤霉素( GA ) 20-oxidase , OsGA20ox2 ,为催化 GA 生合成。这里,我们报导新米饭住宿抵抗基因,弄短的基础 Internodes (SBI ) ,它编码赤霉素 ? 2-oxidase 并且明确地控制灰煤杆的延伸通过撤销的基础 internodes GA 活动。SBI 主要在灰煤杆被表示基础 internodes。基因分析显示 SBI 是影响米饭高度和住宿抵抗的半主导的基因。SBI 突变而产生之遗传的变体显示不同活动并且与米饭变化的高度被联系。与 SBI 等位基因的更高的活动繁殖与改进住宿抵抗和增加的产量产生新米饭变化。SBI 的发现为生产半矮子米饭显型提供一个理想的基因资源并且为与提高的住宿抵抗和高产量引起米饭变化提供有效策略。 | Chang Liu Jinshan Gui Chenjian Fu Hasi Yu Dongliang Song Junhui Shen Peng Qin Xuanming Liu Bin Han Yuanzhu Yang Laigeng Li | 2018 | Molecular Plant2018，11，2： | 33 |
| 2 | Reconstruction of precipita- tion in the last 140 years fromtree ring at south margin of the Tengger Desert, China显示文摘Based on the tree ring width index of Pinus tabulaeformis, precipitation in the last 140 years was recon-structed at south margin of the Tengger Desert. The results indicated that there were obvious fluctuations of dry-wet changes in precipitation: two wet periods occurred during 1868―1876 and 1932―1939, and two dry periods during 1877―1894 and 1924―1932, however, the years 1887 and 1888 were a little wet. There were small changes in precipita-tion during 1895―1923 and 1940―2000. As compared to the average, the maximum increasing range of precipitation amounted to 56% during the wet periods, and 42% during the dry periods. And the range of variability of precipitation exceeded 30% in 19 years. There was no obvious consistent drying or wetting trend in the last 140 years. But since 1940 fluctuating scope of precipitation tended to be smaller, while the frequency of the fluctuation tended to be larger. Power spectrum analyses suggested that precipitation of south mar-gin of the Tengger Desert had significant periodicities of 2.46―2.64 a and quasi periodicity of 11.67 a. | HASI Eerdun | 2005 | Chinese Science Bulletin2005，50，21： | 17 |
| 3 | Physicochemical characteristics of ambient particles settling upon leaf surfaces of urban plants in Beijing显示文摘Particulate pollution is a serious health problem throughout the world, exacerbating a wide range of respiratory and vascular illnesses in urban areas. Urban plants play an important role in reducing particulate pollution. Physicochemical characteristics of ambient particles settling upon leaf surfaces of eleven roadside plants at four sites of Beijing were studies. Results showed that density of particles on the leaf surfaces greatly varied with plant species and traffic condition. Fraxinus chinensis, Sophora japonica, Ailanthus altissima, Syringa oblata and Prunus persica had larger densities of particles among the tall species. Due to resuspension of road dust, the densities of particles of Euonymus japonicus and Parthenocissus quinquefolia with low sampling height were 2—35 times to other taller tree species. For test plant species, micro-roughness of leaf surfaces and density of particles showed a close correlation. In general, the larger micro-roughness of leaf surfaces is, the larger density of particles is. Particles settling upon leaf surfaces were dominantly PM10 (particulate matter less than 10 ?滋m in aerodynamic diameter; 98.4%) and PM2.5 (particulate matter less than 2.5 ?滋m in aerodynamic diameter; 64.2%) which were closely relative to human health. Constant elements of particles were C, O, K, Ca, Si, Al, Mg, Na, Fe, S, Cl and minerals with higher content were SiO2, CaCO3, CaMg(CO3)2, NaCl and 2CaSO4·H2O, SiO2. CaCO3 and CaMg(CO3)2 mainly came from resuspension of road dust. 2CaSO4·H2O was produced by the reaction between CaCO3 derived from earth dust or industrial emission and SO2, H2SO4 or sulfate. NaCl was derived from sea salt. | WANG Lei LIU Lian-you GAO Shang-yu HASI Eerdun WANG Zhi | 2006 | Journal of Environmental Sciences2006，18，5： | 16 |
| 4 | Comparative analysis of GF-1,HJ-1,and Landsat-8 data for estimating the leaf area index of winter wheat显示文摘Using simultaneously collected remote sensing data and field measurements,this study firstly assessed the consistency and applicability of China high-resolution earth observation system satellite 1(GF-1) wide field of view(WFV) camera,environment and disaster monitoring and forecasting satellite(HJ-1) charge coupled device(CCD),and Landsat-8 operational land imager(OLI) data for estimating the leaf area index(LAI) of winter wheat via reflectance and vegetation indices(VIs). The accuracies of these LAI estimates were then assessed through comparison with an empirical model and the PROSAIL radiative transfer model. The effects of radiation calibration,spectral response functions,and spatial resolution on discrepancies in the LAI estimates between the different sensors were also analyzed. The results yielded the following observations:(1) The correlation between reflectance from different sensors is relative good,with the adjusted coefficients of determination(R2) between 0.375 to 0.818. The differences in reflectance are ranging from 0.002 to 0.054. The correlation between VIs from different sensors is high with the R2 between 0.729 and 0.933. The differences in the VIs are ranging from 0.07 to 0.156. These results show the three sensors' images can all be used for cross calibration of the reflectance and VIs.(2) The four VIs from the three sensors are all demonstrated to be highly correlated with LAI(R2 between 0.703 and 0.849). The linear models associated with the 2-band enhanced vegetation index(EVI2),which feature the highest R2(higher than 0.746) and the lowest root mean square errors(RMSE)(less than 0.21),were selected to estimate the winter wheat LAI. The accuracy of the estimated LAI from Landsat-8 was the highest,with the relative errors(RE) of 2.18% and an RMSE of 0.13,while the HJ-1 was the lowest,with the RE of 2.43% and the RMSE of 0.15.(3) The inversion errors in the different sensors' LAI estimates using the PROSAIL model are small. The accuracy of the GF-1 is the highest with the RE of 3.44%,and the RMSE of 0.22,whereas that of the HJ-1 is the lowest with the RE of 4.95%,and the RMSE of 0.26.(4) The effects of the spectral response function and radiation calibration for the different sensors are small and can be ignored,but the effects of spatial resolution are significant and must be taken into consideration in practical applications. | LI He CHEN Zhong-xin JIANG Zhi-wei WU Wen-bin REN Jian-qiang LIU Bin Tuya Hasi | 2017 | Journal of Integrative Agriculture2017，16，2： | 15 |
| 5 | Compactness of Composition Operators from the Bloch Space β to Q_K Spaces显示文摘假定φ是联合起来的磁盘Δ的一张分析自我地图。我们从 Bloch 空间 B 考虑作文操作符 C_ φ的紧密进以后否定的、不减少的函数 K (r) 为 0 ≤ r 定义的空格 Q_K < ∞。我们的紧密条件仅仅取决于能被看作已知的结果的细微改进的φ。进空格 Q_K 的 Dirichlet 空间 D 也是的 C_φ f rom 的紧密调查了。 | Hasi WULAN | 2005 | Acta Mathematica Sinica,English Series2005，21，6： | 12 |
| 6 | Nebkha (coppice dune) formation and significance to environmental change reconstructions in arid and semiarid areas显示文摘在干旱、半干旱的区域的环境对气候变化极其敏感。在这些区域的高风活动导致了广泛地发达的干旱地形学,但是因为相对高分辨率的代理的缺席,过去环境的变化糟糕被理解。nebkhas 的累积特征,在这些区域广泛地发展了,能被用作重建的一个方法环境变化。这里,我们在干旱、半干旱的区域在关于 nebkhas 和他们的意义的形成,发展,和沉积特征的研究总结了最近的进展到环境变化。基于我们的同事的研究,我们建议关于 nebkha 形成的研究能在干旱、半干旱的区域关于环境变化提供不同线索;然而,继续研究被需要。 | LANG Lili WANG Xunming HASI Eerdun HUA Ting | 2013 | Journal of Geographical Sciences2013，23，2： | 12 |
| 7 | Characteristics of surface runoff in a sandy area in southern Mu Us sandy land显示文摘To better understand the key role of biological soil crusts(BSCs) in redistribution processes of limited water resources in semi-arid sandy ecosystems,surface runoff over BSCs in a sandy area in the southern Mu Us sandy area was observed in this study.The results indicated that runoff occurred twice among six rainfall events during the experimental period.Runoff yields varied among types of BSCs,and that they increased in the following order:light algae crusts,dark algae crusts and moss crusts.These findings showed that runoff yields were increasing with the development of BSCs.The percentage of runoff in individual rainfall events increased from light algae crusts to moss crusts,which indicated that the redistribution ratios of different types of BSCs differed.Surface runoff of BSCs may be influenced by rainfall,rain intensity,degree of water saturation of the BSCs before the rain and degree of development of BSCs.Formation of BSCs on the surface of sand dunes changed the spatial distribution pattern of water in this semi-arid sandy ecosystem,which increased the heterogeneity of resources such as water and nutrients.Therefore,making appropriate disturbances of BSCs during storm season is beneficial to maintaining the balance of natural resources in the semi-arid sandy ecosystem. | WU YongSheng HASI Eerdun Wugetemole WU Xia | 2012 | Chinese Science Bulletin2012，57，2： | 8 |
| 8 | Research advances of SAR remote sensing for agriculture applications: A review显示文摘Synthetic aperture radar(SAR) is an effective and important technique in monitoring crop and other agricultural targets because its quality does not depend on weather conditions. SAR is sensitive to the geometrical structures and dielectric properties of the targets and has a certain penetration ability to some agricultural targets. The capabilities of SAR for agriculture applications can be organized into three main categories: crop identification and crop planting area statistics, crop and cropland parameter extraction, and crop yield estimation. According to the above concepts, this paper systematically analyses the recent progresses, existing problems and future directions in SAR agricultural remote sensing. In recent years, with the remarkable progresses in SAR remote sensing systems, the available SAR data sources have been greatly enriched. The accuracies of the crop classification and parameter extraction by SAR data have been improved progressively. But the development of modern agriculture has put forwarded higher requirements for SAR remote sensing. For instance, the spatial resolution and revisiting cycle of the SAR sensors, the accuracy of crop classification, the whole phenological period monitoring of crop growth status, the soil moisture inversion under the condition of high vegetation coverage, the integrations of SAR remote sensing retrieval information with hydrological models and/or crop growth models, and so on, still need to be improved. In the future, the joint use of optical and SAR remote sensing data, the application of multi-band multi-dimensional SAR, the precise and high efficient modeling of electromagnetic scattering and parameter extraction of crop and farmland composite scene, the development of light and small SAR systems like those onboard unmanned aerial vehicles and their applications will be active research areas in agriculture remote sensing. This paper concludes that SAR remote sensing has great potential and will play a more significant role in the various fields of agricultural remote sensing. | LIU Chang-an CHEN Zhong-xin SHAO Yun CHEN Jin-song Tuya Hasi PAN Hai-zhu | 2019 | Journal of Integrative Agriculture2019，18，3： | 7 |
| 9 | Self-organizing feature map neural network classification of the ASTER data based on wavelet fusion显示文摘Most methods for classification of remote sensing data are based on the statistical parameter evaluation with the assumption that the samples obey the normal distribution. How-ever, more accurate classification results can be obtained with the neural network method through getting knowledge from environments and adjusting the parameter (or weight) step by step by a specific measurement. This paper focuses on the double-layer structured Kohonen self-organizing feature map (SOFM), for which all neurons within the two layers are linked one another and those of the competition layers are linked as well along the sides. Therefore, the self-adapting learning ability is improved due to the effective competition and suppression in this method. The SOFM has become a hot topic in the research area of remote sensing data classi-fication. The Advanced Spaceborne Thermal Emission and Reflectance Radiometer (ASTER) is a new satellite-borne remote sensing instrument with three 15-m resolution bands and three 30-m resolution bands at the near infrared. The ASTER data of Dagang district, Tianjin Munici-pality is used as the test data in this study. At first, the wavelet fusion is carried out to make the spatial resolutions of the ASTER data identical; then, the SOFM method is applied to classifying the land cover types. The classification results are compared with those of the maximum likeli-hood method (MLH). As a consequence, the classification accuracy of SOFM increases about by 7% in general and, in particular, it is almost as twice as that of the MLH method in the town. | HASI Bagan MA Jianwen LI Qiqing HAN Xiuzhen LIU Zhili | 2004 | Science China Earth Sciences2004，47，7： | 7 |
| 10 | Structural variations of sand- bearing airflow over dune at southeastern fringe of Tengger Desert显示文摘From the analytical results of observed data on sand transport rates at different positions of dune surface at southeastern fringe of Tengger Desert, it has been found that the vertical distribution of blown sand flux exhibits a no-ticeable variation when sand grains move upslope and downslope of dune surface under the action of wind force. Within the height of 20 cm above the sand surface, the verti-cal distribution of mass flux at different positions from toe to dune crest of stoss slope of sand dunes coincides with a single exponentially decaying law; while the vertical distribution of mass flux over the lee slope occurs as two variable zones, with the height of 8—12 cm as the dividing line, the sand transport rate below this height exponentially decreases with increasing height, but above this height decreases in a power function law. On the stoss slope, the relative sand transport rate in the upper layer of sand flow tends to decrease with the increasing wind velocity and the total sand transport rate towards the dune crest due to the shortened trajectory length of saltation sand grains moving upslope. On the lee slope, the increase in lift-off height and trajectory length of saltation sand grains moving downslope leads to the increase in rela-tive sand transport rate in the upper layer of sand flow. | Hasi Eerdum | 2004 | Chinese Science Bulletin2004，49，9： | 6 |
| 11 | Landscape pattern change and driving force of blowout distribution in the Hulun Buir Sandy Grassland显示文摘The land coverage pattern changes for the past 50 years in a typical region of the Hulun Buir Sandy Grassland were interpreted and analyzed based on a series of remote sensing images in 1959, 2002, 2004 and 2009. The temporal and spatial changes of landscape patterns were revealed and the driving forces were analyzed. The results show that all land coverage types had large variable amplitudes. The grassland area decreased, whereas other areas increased. Owing to implementation of artificial sand fixation from 2004 to 2009, the areas of flowing blowouts and depositional area decreased by 71,369 and 128,835 m2 , respectively. The average patch area reduced, but the number of blowouts increased, fractal dimension increased, and blowout structure became complex. The fragmentation index increased, whereas contagion index decreased. Driving force analysis shows that human factors such as overgrazing are slightly larger than natural factors of increased temperature and decreased precipitation. | Eerdun Hasi | 2012 | Research in Cold and Arid Regions2012，4，5： | 6 |
| 12 | Characteristics of stemflow for sand-fixed shrubs in Mu Us sandy land, Northwest China显示文摘Little work has been done on stemflow for desert shrubs in China. This study measured stemflow in two shrubs of Salix psammophila C. Wang et Chang Y. Yang and Artemisia sphaerocephala Krasch in Mu Us sandy land and established a relationship between stemflow and canopy characteristics, rainfall amount and intensity. During the experimental period, the amount of stemflow for S. psammophila and A. sphaerocephala accounted for 7.6% and 2.7% of the gross rainfall respectively. Statistical analysis showed that there was a significant positive linear correlation between rainfall and stemflow for the two shrubs; while the relationship between stemflow percentage and rainfall suggested that there existed a rainfall depth threshold of 3―5 mm for S. psammophila and 5―7 mm for A. sphaerocephala. Stemflow percentage positively increased with rainfall depth increasing before the rainfall depth threshold values had been reached but showed stability after the threshold. A stepwise regression analysis suggested that the shrubs with more branches, larger crown volume and smaller branch angle inclination tended to collect more volumes of stemflow. Moreover, stemflow amount and percentage increased with the maximum rain intensity increasing in 10 minutes (I10) and the stemflow percentage tended to increase quickly with I10 when it was less than 3.0 mm h-1 for S. psammophila and 2.0 mm h-1 for A. sphaero- cephala, and then showed stable trend with increasing of I10. | YANG ZhiPeng LI XiaoYan LIU LianYou WU JianJun HASI Eerdun SUN YongLiang | 2008 | Chinese Science Bulletin2008，53，14： | 6 |
| 13 | Remote sensing data classification using tolerant rough set and neural networks显示文摘BP algorithm of neural net is used more in remote sensing data classification. One of drawbacks of BP algorithm is the overall low function when the net is training. To avoid this kind of problem, the paper introduces the tolerant rough set for classification-preprocessing the training data to reduce the influence elements of the training convergence in order to improve the net training successful rate. ETM+ data of Beijing in May 2003 is selected in the study. ETM+ data before and after classification preprocessing, respectively, are used for BP (Back propaga-tion) training. The result shows that such a preprocessing not only compensates the drawback of BP algorithm when processing ETM+ data but also improves classification accuracy. | MA Jianwen HASI Bagan | 2005 | Science China Earth Sciences2005，48，12： | 3 |
| 14 | Rapid Detection of Sildenafil Drugs in Liquid Nutraceuticals Based on Surface-Enhanced Raman Spectroscopy Technology显示文摘在这研究,提高表面的拉曼光谱学(重量的单位) 技术被用来很快检测非法增加的 sildenafil 药。由密度的详细归属分析功能的理论(DFT ) 被用来指导特定的实验。拉曼信号从银胶体(Ag 关口) 被获得底层,和他们面对矿物质盐增加了,钾碘化物(KI ) 。这些方法在象 1 獳? 敷椠汬獵牴瑡 ? 桴 ? 潰整瑮慩?景琠敨渠睥栠略楲瑳捩猠档浥 e 一样低的水的答案检测了 | Hang Zhao Wuliji Hasi Lin Bao Siqingaowa Han Xuanyu Sha Jia Sun Xiutao Lou Dianyang Lin Zhiwei Lv | 2017 | Chinese Journal of Chemistry2017，35，10： | 3 |
| 15 | Compactness of composition operators on BMOA and VMOA显示文摘We give a new and simple compactness condition for composition operators on BMOA,the space of all analytic functions of the bounded mean oscillation on the unit disk.Using our results one may immediately obtain that compactness of a composition operator on BMOA implies its compactness on the Bloch space as well as on the Hardy space.Similar results on VMOA are also given. | Hasi WULAN | 2007 | Science China Mathematics2007，50，7： | 3 |
| 16 | Lipschitz spaces and Q_K type spaces显示文摘If f(z) =Σ∞ n=0 anzn and g(z) =Σ∞n=0bnzn for functions f, g are analytic in the unit disc, the Hadamard products of f and g is defined by f * g = ∞ n=0 a n b n z n . In this paper, the Lipschitz spaces Λ(s, α) and QK type spaces are studied in terms of the Hadamard products. | LI Hao 1 , WULAN Hasi 1, & ZHOU JiZhen 1,2 1 Department of Mathematics, Shantou University, Shantou 515063, China 2 School of Sciences, Anhui University of Science and Technology, Huainan 232001, China | 2010 | Science China Mathematics2010，53，3： | 2 |
| 17 | Desertification in China: An assessment显示文摘 | Xunming Wang Fahu Chen Eerdun Hasi Jinchang Li | 2008 | Earth Science Reviews2008，，3： | 2 |
| 18 | Study on two-cell stimulated Brillouin scattering system with mixture medium显示文摘In this paper,a method of choosing mixture medium in two-cell stimulated Brillouinscattering(SBS)system to improve the system performance is proposed.The Brillouin frequency shift(BFS)of mixture medium varies with the mixing ratio andthus the difference of the BFS between the two cells can be eliminated.The two-cellSBS system with acetone(C3H6O)in its generator cell and mixture liquid ofCCl4/C2Cl4 in its amplifier cell is investigated.The C3H6O has a high optical breakdown threshold and the mixture liquid of CCl4/C2Cl4 has a small absorption coeffi-cient and the same BFS as that of C3H6O when the volume fraction of CCl4 is 4%.Compared with two-cell SBS system with the same liquid(C2Cl4)or different liquid(C3H6O and C2Cl4)in generator and amplifier cell,the SBS system with mixture liq-uid(CCl4/C2Cl4)in amplifier cell and C3H6O in generator cell improves thepower-load,energy reflectivity(ER),phase conjugation(PC)fidelity and ER stabil-ity. | HASI Wuliji | 2007 | Science China(Physics,Mechanics & Astronomy)2007，50，2： | 2 |
| 19 | Lungparenchymalinvasioninpulmonarycarcinoidtumor:animportanthistologicfeaturesuggestingthediagnosisofatypicalcarcinoid andpoorprognosis显示文摘 | HaSY LeeJJ ChoJ etal | 2013 | LungCancer2013，80，2： | 1 |
| 20 | Characterizations ofα-Bloch spaces on the unit ball显示文摘 | LI S HASI Wulan | 2008 | Math Anal Appl2008，343，1： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员