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Attribution of explanatory factors for change in soil organic carbon density in the native grasslands of Inner Mongolia,China

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Journal of Arid Land 2018年第3期10卷 375-387页

作者： JIN Dongyan phil J MURRAY XIN Xiaoping QIN Yifei CHEN Baorui QING Gele ZHANG Zhao YAN Ruirui Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences Department of Sustainable Soils and Grassland Systems Rothamsted Research North Wyke Department of Grassland Ecology and Animal Husbandry Xilingol Vocational College

The variation in soil organic carbon density（SOCD） has been widely documented at various spatial and temporal scales. However, an accurate method for examining the attribution of explanatory factors for change in SOCD is still lacking. This study aims to attribute and quantify the key climatic factors, anthropogenic activities, and soil properties associated with SOCD change in the native grasslands of Inner Mongolia, China, by comparing data between the 1960s and the 2010s. In 2007 and 2011, we resampled 142 soil profiles which were originally sampled during 1963–1964 in the native grasslands of Inner Mongolia. SOCD was determined in A horizon（eluvial horizon） of the soil. We selected the explanatory factors based on a random forest method, and explored the relationships between SOCD change and each of the explanatory factors using a linear mixed model. Our results indicated that the change in SOCD varied from the east to the west of Inner Mongolia, and SOCD was 18% lower in the 2010s than in the 1960s. The lower SOCD in the 2010s may primarily be attributed to the increasing in mean annual water surface evaporation, which explained approximately 10% and 50% of the total variation and explainable variation in the change in SOCD, respectively. The sand content of the soil is also a significant explanatory factor for the decrease in SOCD, which explained about 4% and 21% of the total variation and explainable variation in the change in SOCD, respectively. Furthermore, the collection of quantitative information on grazing frequency and duration may also help to improve our understanding of the anthropogenic factors that govern the change in SOCD.

关键词： soil organic carbon climate change soil texture mixed linear model effect isolation native grasslands

The optimal timing of post-prostate biopsy magnetic resonance imaging to guide nerve-sparing surgery

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Asian Journal of Andrology 2014年第2期16卷 280-284,I0010页

作者： Young Hwii Ko phil Hyun Song Ki Hak Moon Hee Chang Jung Jun Cheon Deuk Jae Sung Department of Urology Yeuflgnam University School of Medicine Daegu Korea Department of Urology Korea University School of Medicine Seoul Korea Department of Radiology Korea University School of Medicine Seoul Korea

The goal of our study was to evaluate the impact of the interval between prostate biopsy and magnetic resonance imaging （MRI） on the accuracy of simple tumor localization, which is essential information that enables nerve-sparing surgery. We also sought to determine the optimal timing of a post-biopsy MRI, A total of 184 patients who had undergone MRI before radical prostatectomy at an institution without a predetermined schedule for MRI after a prostate biopsy were enrolled. The mean interval from the biopsy to the MRI was 30.8 ± 18.6days. The accuracy of the MRI for simplified tumor location （right, left, bilateral and none） was 44.6%. In the group with discordant pathologic and MRI findings, the most common reason recorded was ＇MRI predicted a unilateral lesion, but pathology revealed bilateral lesions＇（58.3%）, followed by ＇MRI predicted no lesion, but pathology revealed the presence of a lesion＇（32.0%）. Multivariable analysis showed that the discordant group had a shorter interval （25.0 ± 14.3 vs 38.1 ± 20.6days, P 〈 0.01） preceding the MRI and a higher rate of hemorrhage as observed by MRI （80.4% vs 54.8%, P 〈 0.01） in comparison with the accordant group. In receiver operating characteristics analysis, the area under the curve of the MRI interval in accurate prediction of the tumor location was 0.707 （P 〈 0.001）. At the MRI interval＇s cutoff of 28.5days, the sensitivity was 73.2% and the specificity was 63.7%. When the MRI was performed within 28days, the accumulated accuracy was only 26.1% （23/88）; however, when it was performed after 28days, the reversely accumulated accuracy was 61.5% （59/96）. These data support a waiting period of at least 4weeks after a biopsy before performing an MRI for the purposes of surgical refinement.

关键词： magnetic resonance imaging nerve preservation prostate biopsy radical prostatectomy

变电站谐波抑制与无功补偿的大功率混合型电力滤波器(英文)

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中国电机工程学报 2004年第9期24卷 115-123页

作者：罗安付青王丽娜 phil Mellor 湖南大学电气与信息工程学院湖南长沙410082 中南大学信息科学与工程学院湖南长沙410083 英国Bristol大学电气与电子工程学院

阐述了一种用于高电压变电站谐波抑制与无功补偿的大功率混合型电力滤波器。该系统包括无源滤波器和有源滤波器两部分,其中有源电力滤波器能同时补偿大容量变电站的功率因素和电流谐波。文章提出了大功率混合型电力滤波器的一种配置,讨... 详细信息

阐述了一种用于高电压变电站谐波抑制与无功补偿的大功率混合型电力滤波器。该系统包括无源滤波器和有源滤波器两部分,其中有源电力滤波器能同时补偿大容量变电站的功率因素和电流谐波。文章提出了大功率混合型电力滤波器的一种配置,讨论了其工作原理,给出了无源滤波器的设计和有源滤波器的谐波电流注入分析。阐述了有源滤波器中基于DSP的数字控制器。最后,仿真结果和实际工程应用都证明这个系统有着良好的无功补偿和谐波滤波性能。

关键词：变电站谐波抑制电力系统电网无功补偿大功率混合型电力滤波器

Digging in the Garden of Eden

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Sociology Study 2018年第4期8卷 171-179页

作者： Mary phil Korsak Higher Institute of Translators and Interpreters of Brussels Belgium

The paper first presents the translation of Hebrew Genesis entitled At the Start... Genesis Made New. The new version belongs to the field of ethno-poetics. It intends to take today＇s listener/reader back in time by capturing the characteristics of the original Hebrew and expressing them through the medium of modern English. If translations may be said to reflect archaeological layers of social history, At the Start... Genesis Made New attempts to dig down with the purpose of reaching the deepest layer： critical analysis of terminology in the Garden of Eden story provides insights into the primitive Hebrew society that invented this particular myth more than 3,000 years ago. The paper also looks at the same story as translated in the Revised Standard Version, first published as the Authorised Version or King James Bible in 1661, and The New English Bible published in 1961. Different world views characteristic of European society in recent centuries colours the understanding of the biblical text. The translations are affected in consequence. A comparison between the versions is revealing…

关键词： YHWH Elohim man/woman ground/groundling

The Assessment of Global Surface Temperature Change from 1850s:The C-LSAT2.0 Ensemble and the CMST-Interim Datasets

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Advances in Atmospheric Sciences 2021年第5期38卷 875-888页

作者： Wenbin SUN Qingxiang LI Boyin HUANG Jiayi CHENG Zhaoyang SONG Haiyan LI Wenjie DONG Panmao ZHAI phil JONES School of Atmospheric Sciences and Key Laboratory of Tropical Atmosphere−Ocean System Ministry of EducationZhuhai 519082China National Centers for Environmental Information NOAAAshevilleNC 28801USA Chinese Academy of Meteorological Sciences CMABeijing 100081China Climatic Research Unit University of East AngliaNorwich NR47TJUK Southern Laboratory of Ocean Science and Engineering(Guangdong Zhuhai) Zhuhai 519082China

Based on C-LSAT2.0,using high-and low-frequency components reconstruction methods,combined with observation constraint masking,a reconstructed C-LSAT2.0 with 756 ensemble members from the 1850s to 2018 has been *** ensemble versions have been merged with the ERSSTv5 ensemble dataset,and an upgraded version of the CMSTInterim dataset with 5°×5°resolution has been *** CMST-Interim dataset has significantly improved the coverage rate of global surface temperature *** reconstruction,the data coverage before 1950 increased from 78%−81%of the original CMST to 81%−89%.The total coverage after 1955 reached about 93%,including more than 98%in the Northern Hemisphere and 81%−89%in the Southern *** the reconstruction ensemble experiments with different parameters,a good basis is provided for more systematic uncertainty assessment of C-LSAT2.0 and *** comparison with the original CMST,the global mean surface temperatures are estimated to be cooler in the second half of 19th century and warmer during the 21st century,which shows that the global warming trend is further *** global warming trends are updated from 0.085±0.004℃(10 yr)^(–1)and 0.128±0.006℃(10 yr)^(–1)to 0.089±0.004℃(10 yr)^(–1)and 0.137±0.007℃(10 yr)^(–1),respectively,since the start and the second half of 20th century.

关键词： C-LSAT2.0 ensemble datasets CMST-Interim EOTs high-and low-frequency components reconstruction

Forecasting available parking space with largest Lyapunov exponents method

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Journal of Central South University 2014年第4期21卷 1624-1632页

作者：季彦婕汤斗南郭卫红 BLYTHE T.phil 王炜 Jiangsu Key Laboratory of Urban ITS Southeast University Transport Operations Research Group School of Civil Engineering & Geosciences Newcastle University

The techniques to forecast available parking space(APS) are indispensable components for parking guidance systems(PGS). According to the data collected in Newcastle upon Tyne, England, the changing characteristics of APS were studied. Thereafter, aiming to build up a multi-step APS forecasting model that provides richer information than a conventional one-step model, the largest Lyapunov exponents(largest LEs) method was introduced into PGS. By experimental tests conducted using the same dataset, its prediction performance was compared with traditional wavelet neural network(WNN) method in both one-step and multi-step processes. Based on the results, a new multi-step forecasting model called WNN-LE method was proposed, where WNN, which enjoys a more accurate performance along with a better learning ability in short-term forecasting, was applied in the early forecast steps while the Lyapunov exponent prediction method in the latter steps precisely reflect the chaotic feature in latter forecast period. The MSE of APS forecasting for one hour time period can be reduced from 83.1 to 27.1(in a parking building with 492 berths) by using largest LEs method instead of WNN and further reduced to 19.0 by conducted the new method.

关键词： available parking space Lyapunov exponents wavelet neural network multi-step forecasting method

Tooth loss and alveolar remodeling in Sinosaurus triassicus (Dinosauria: Theropoda) from the Lower Jurassic strata of the Lufeng Basin, China

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Chinese Science Bulletin 2013年第16期58卷 1931-1935页

作者： XING LiDa BELL phil R ROTHSCHILD Bruce M RAN Hao ZHANG JianPing DONG ZhiMing ZHANG Wei CURRIE philip J Department of Biological Sciences University of Alberta School of the Earth Sciences and Resources China University of Geosciences Pipestone Creek Dinosaur Initiative Division of Vertebrate Paleontology Natural History Museum and Biodiversity Research Institute University of Kansas Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University) Ministry of Education Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Department of Computer Engineering Chengdu Electromechanical College

Pathological or traumatic loss of teeth often results in the resorption and remodeling of the affected alveoli in mammals. However, instances of alveolar remodeling in reptiles are rare. A remodeled alveolus in the maxilla of the Chinese theropod Sinosaurus (Lower Jurassic Lower Lufeng Formation) is the first confirmed example of such dental pathology in a dinosaur. Given the known relationship between feeding behavior and tooth damage in theropods (teeth with spalled enamel, tooth crowns embedded in bone) and the absence of dentary, maxillary, and premaxillary osteomyelitis, traumatic loss of a tooth is most likely the cause of alveolar remodeling. Based on the extent of remodeling, the injury and subsequent tooth loss were non-fatal in this individual.

关键词：下侏罗统兽脚类牙齿肺泡中国恐龙禄丰盆地地层

Paul Cézanne, 1839-1906

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Paul Cézanne, 1839-1906

作者： (1950-)Becks-Malorny Ulrike Goddard phil.

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Star Wars

Star Wars