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浏览/检索结果: 共14条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 基于多角度偏振成像仪数据的测试光源变化提取方法研究 期刊论文  OAI收割 光子学报, 2022, 卷号: 51 作者:  叶晨;  骆冬根;  李怡心;  姚萍萍;  王羿   |  收藏  |  浏览/下载：12/0  |  提交时间：2023/11/10 Directional polarimetric camera  Optical-electrical properties testing  Wavelet decomposition  Stability  Trap detector  Signal-to-noise ratio  多角度偏振成像仪  光电性能测试  小波分解  稳定性  陷阱探测器  信噪比   Leaf litter traits predominantly control litter decomposition in streams worldwide 期刊论文  OAI收割 GLOBAL ECOLOGY AND BIOGEOGRAPHY, 2019, 页码: 18 作者:  Zhang, Menghua;  Cheng, Xiaoli;  Geng, Qinghong;  Shi, Zheng;  Luo, Yiqi   |  收藏  |  浏览/下载：18/0  |  提交时间：2019/10/17 C  N ratio  climate zones  leaf litter traits  lignin content  litter decomposition  streams and rivers  tree functional types   Low-temperature synthesis of uranium monocarbide by a Pechini-type in situ polymerizable complex metho 期刊论文  OAI收割 JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2018, 卷号: 101, 页码: 2786-2795 作者:  Cao, Shiwei;  Wang, Jieru;  Guo, Hangxu;  Bai, Jing;  Chen, Denglei   |  收藏  |  浏览/下载：46/0  |  提交时间：2018/05/21 Chelation  In Situ charrIng  One-pot Reaction  Powders  Route  Decomposition  Perovskite  Citric-acid  Solid-solutions  Molar Ratio  Zirconium Carbide  Ion   Positive and negative effects of UV irradiance explain interaction of litter position and UV exposure on litter decomposition and nutrient dynamics in a semi-arid dune ecosystem 期刊论文  OAI收割 SOIL BIOLOGY & BIOCHEMISTRY, 2018, 卷号: 124, 页码: 245-254 作者:  Erdenebileg, Enkhmaa   |  收藏  |  浏览/下载：20/0  |  提交时间：2022/02/25 Dryland  Litter C:N ratio  Litter position  Litter quality  Microbial decomposition  Photodegradation  UV radiation   Leaf litter decomposition dynamics in unmanaged Phyllostachys pubescens stands at high elevations in the Daiyun Mountain National Nature Reserve 期刊论文  OAI收割 Journal of Mountain Science, 2017, 卷号: 14, 期号: 11, 页码: 2246-2256 作者:  XU Dao-wei;  LIU Jin-fu;  Peter MARSHALL;  HE Zhong-sheng;  ZHENG Shi-qun   |  收藏  |  浏览/下载：33/0  |  提交时间：2017/11/17 Decomposition Models  Nutrient Release Pattern  Biomass-ratio Hypothesis  Phyllostachyspubescens  Litter Decomposition   Changes in microbial community composition in the leaf litter of successional communities after volcanic eruptions of Mount Usu, northern Japan 期刊论文  OAI收割 Journal of Mountain Science, 2016, 卷号: 13, 期号: 9, 页码: 1652-1662 作者:  Michiru OTAKI;  Fumiko TAKEUCHI;  Shiro TSUYUZAKI 收藏  |  浏览/下载：20/0  |  提交时间：2016/08/26 Volcanic succession  Fungi-to-bacteria ratio  Litter decomposition  Microbial community  Phospholipid fatty acids (PLFAs)  Primary succession   Model for the decomposition of carnallite in aqueous solution 期刊论文  OAI收割 INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2015, 卷号: 139, 页码: 36-42 作者:  Cheng, Huaide;  Ma, Haizhou;  Hai, Qingyu;  Zhang, Zhihong;  Xu, Liming   |  收藏  |  浏览/下载：28/0  |  提交时间：2018/06/20 Carnallite  Decomposition Ratio  Temperature  Water Amount   Improved TOPS about direction of arrival estimation for wideband signals (EI CONFERENCE) 会议论文  OAI收割 2011 International Conference on Vibration, Structural Engineering and Measurement, ICVSEM2011, October 21, 2011 - October 23, 2011, Shanghai, China 作者:  He B. 收藏  |  浏览/下载：16/0  |  提交时间：2013/03/25 The study about the direction-of-arrival (DOA) estimation for wideband signals is a basic topic of Signal Processing. The method called test of orthogonality of projected subspaces (TOPS) does not require initial values to form focusing matrix compared with the coherent signal subspace method (CSSM)  but it has poor performance for coherent wideband signals at low signal-to-noise ratio (SNR). Based on the lack of the conventional TOPS  this paper reconstructs a set of new matrices with the narrowband correlated matrices coming from the DFT decomposition of the array output and modifies the method frame of the conventional TOPS. So we get a set of reconstructed matrices with full rank corresponding to each frequency bin  and which have no array aperture loss. The improved TOPS can estimate the DOA for coherent wideband sources at low SNR  and enhances the performance of the conventional TOPS. Simulation results show that the improved TOPS is effective  and the total performance of which is similar to the rotational signal-subspace (RSS) method. (2012) Trans Tech Publications.   Study on the difference between turfy soil and normal peat soil in China (EI CONFERENCE) 会议论文  OAI收割 2011 International Conference on Vibration, Structural Engineering and Measurement, ICVSEM2011, October 21, 2011 - October 23, 2011, Shanghai, China 作者:  Nie L. 收藏  |  浏览/下载：40/0  |  提交时间：2013/03/25 As the special soil  turfy soil and peat soil in China contained some similar properties with high void ratio  high water content  high organic content  etc. But turfy soil also had properties which difference from peat soil. In this paper  based on the formation of the cause and geological environment and geomorphologic characteristics of geological in the quaternary  took the typical and widespread turfy soil and peat soil regions for example  systematically discussed the material composition and macroscopic and microcosmic structural features  put further research on the physical chemistry mechanical characteristics. Then the come to the conclusion that the essential reason for difference between turfy soil and peat soil were decomposition degree and organic content. The result that worse engineering properties such as higher the moisture content  porosity  compressibility  internal cohesion and the lower specific weight  consolidation coefficient and permeability were due to the lower decomposition degree and higher organic content of turfy soil than peat soil. It can provide reference to the practical projects of turfy soil to distinguish peat soil according to this characteristic. (2012) Trans Tech Publications.   Plant litter quality influences the contribution of soil fauna to litter decomposition in humid tropical forests, southwestern China 期刊论文  OAI收割 SOIL BIOLOGY & BIOCHEMISTRY, 2009, 卷号: 41, 期号: 5, 页码: 910-918 作者:  Chen Jin 收藏  |  浏览/下载：14/0  |  提交时间：2012/03/16 Litter decomposition  Litter bag  Soil fauna community  Fauna effect  C and N remaining  C/N ratio  Humid tropical forests  Xishuangbanna