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152篇 您的检索式:作者名="Shibao"
    题名 作者 年代 出处 被引量
1Mass elevation effect and its forcing on timberline altitude显示文摘集体举起效果的概念(massenerhebungseffect, MEE ) 被 A 介绍。de Quervain 大约 100 年以前排队为象树那样的温度相关的参数说明观察趋势并且比在他们的外部边缘上在中央阿尔卑斯山脉发生在更高的举起的 snowline。它广泛地也在世界的另外的区域被观察了,但是没有重要,更不用说量,关于这现象的研究。特别,它完全通常在开发树带界线举起的恰当的模型被忽视了,与仅仅看作影响因素的经度或纬度。这篇论文试着确定到树带界线的 MEE 的贡献举起。认为更多广泛陆地团并且特别越高在陆地质量的内部的山底,越 greater 集体举起效果,这篇论文作为 MEE 的大小拿山底举起(MBE ) 。我们收集树带界线举起的 157 个数据点,并且把他们的纬度,经度和 MBE 用作独立变量在东南的欧亚的大陆为树带界线举起造一个多重线性回归方程。结果生产到树带界线高度活动范围 25.11% , 29.43% ,和 45.46% 的纬度,经度和 MBE 的贡献分别地。北纬度的诺思HAN Fang YAO Yonghui DAI Shibao WANG Chun SUN Ranhao XU Juan ZHANG Baiping 2012Journal of Geographical Sciences2012,22,4:12
2Optimal Linear Array Tradeoff for Configuration and DOF MIMO-SAR显示文摘WANG Libao XU Jia PENG Shibao YUAN Junquan MA Xiaoyan 2011Chinese Journal of Electronics2011,20,2:7
3Physiological diversity of orchids显示文摘The Orchidaceae is a diverse and wide spread family of flowering plants that are of great value in ornamental, medical, conservation, and evolutionary research. The broad diversity in morphology,growth form, life history, and habitat mean that the members of Orchidaceae exhibit various physiological properties. Epiphytic orchids are often characterized by succulent leaves with thick cell walls,cuticles, and sunken stomata, whereas terrestrial orchids possess rhizomes, corms, or tubers. Most orchids have a long juvenile period, slow growth rate, and low photosynthetic capacity. This reduced photosynthetic potential can be largely explained by CO_2 diffusional conductance and leaf internal structure. The amount of light required for plant survival depends upon nutritional mode, growth form,and habitat. Most orchids can adapt to their light environments through morphological and physiological adjustments but are sensitive to sudden changes in irradiance. Orchids that originate from warm regions are susceptible to chilling temperatures, whereas alpine members are vulnerable to high temperatures.For epiphytic orchids, rapid water uptake by the velamen radicum, water storage in their pseudobulbs and leaves, slow water loss, and Crassulacean Acid Metabolism contribute to plant-water balance and tolerance to drought stress. The presence of the velamen radicum and mycorrhizal fungi may compensate for the lack of root hairs, helping with quick absorbance of nutrients from the atmosphere.Under cultivation conditions, the form and concentration of nitrogen affect orchid growth and flowering.However, the limitations of nitrogen and phosphorous on epiphytic orchids in the wild, which require these plants to depend on mycorrhizal fungi for nutrients throughout the entire life cycle, are not clearly understood. Because they lack endosperm, seed germination depends upon obtaining nutrients via mycorrhizal fungi. Adult plants of some autotrophic orchids also gain carbon, nitrogen, phosphorus, and other elements from their mycorrhizal partners. Future studies should examine the mechanisms that determine slow growth and flower induction, the physiological causes of variations in flowering behavior and floral lifespan, the effects of nutrients and atmospheric-nitrogen deposition, and practical applications of mycorrhizal fungi in orchid cultivation.Shibao Zhang Yingjie Yang Jiawei Li Jiao Qin Wei Zhang Wei Huang Hong Hu 2018Plant Diversity2018,40,4:5
4Wideband underwater sonar imaging via compressed sensing with scaling effect compensation显示文摘By exploiting the sparsity of the imaging scene, compressed sensing(CS) imaging may provide an effective solution to cope with the tradeoff of high azimuth resolution and wide swath in synthetic aperture sonar imaging. However, existing CS imaging methods are based on narrowband signal model and the scaling effect on the echoes is normally omitted, which may seriously affect the ultimate image reconstruction performance.This paper establishes the wideband CS underwater sonar imaging model at first, where the scaling effect and Doppler frequency shift are jointly considered. Furthermore, two wideband CS imaging approaches are discussed in uniform scale-range space and velocity-range space, respectively. Besides, modified l1-norm minimization algorithms are proposed for the scene reconstruction in velocity-range space. Finally, numerical experiments are provided to demonstrate the effectiveness of the proposed model and the reconstruction algorithms.YAN HuiChen XU Jia XIA Xiang-Gen LIU Feng PENG ShiBao ZHANG XuDong LONG Teng 2015Science China(Information Sciences)2015,58,2:3
5Can phosphate compounds be used to reduce the plant uptake of Pb and resist the Pb stress in Pb-contaminated soils?显示文摘The effects of different phosphate-amendments on lead(Pb) uptake,the activities of superoxide dismutase(SOD) and the level of malondialdehyde(MDA) in cauliflower(Brassica oleracea L.) in contaminated soils with 2500,or 5000 mg P2O5/kg soil of hydroxyapatite(HA),phosphate rock(PR),single-superphosphate(SSP) and the mix of HA/SSP(HASSP) were evaluated in pot experiments.Results showed that the Pb concentrations in shoots and roots decreased by 18.3%-51.6% and 16.8%-57.3% among the treatments respectively compared to the control samples.The effciency order of these phosphate-amendments in reducing Pb uptake was as follows:HASSP≈ HA > SSP ≈ PR.With the addition of SSP,HA and the mix of HA/SSP,the SOD activity in shoot was reduced markedly(P < 0.05) compared with that in the control group.For example,the SOD activities in shoot by the treatments of HASSP,SSP,and HA in 5000 mg P2O5/kg were found to be only 51.3%,56.2%,and 56.7%,respectively.Similar effects were also observed on the level of MDA in the shoots with a decrease in 24.5%-56.3%.The results verified the inference that phosphate compounds could be used to reduce the plant uptake of Pb and resist the Pb stress in the plant vegetated in Pb-contaminated soils.CHEN Shibao CHEN Li MA Yibing HUANG Yizong 2009Journal of Environmental Sciences2009,21,3:3
6Automatic target recognition method for inverse synthetic aperture sonar imaging显示文摘ZHU Zhaotong PENG Shibao XU Jia XU Xiaomei 2018Chinese Journal of Acoustics2018,37,4:2
7Structural requirements for the flavonoid fisetin in inhibiting fibril forma-tion of amyloid p protein显示文摘Akaishi T Morimoto T Shibao M 2008Neurosci Lett2008,444,3:1
8Hyperadrenergic postural tachycardia syndrome in mast cell activation disorders 显示文摘Shibao C Arzubiaga C Roberts LJ 2^nd 2005Hypertension2005,45,3:1
9Hypoxia regulates xanthine dehydrogenase activity at pre-and post-translational levels 显示文摘Terada L S Piermattei D Shibao G N 1997Arch Biochem Biophys1997,348,:1
10Internationalization of higher education:integrating international students into Canadi- an academic environment 显示文摘GUO Shibao CHASE M 2011Teaching in Higher Edu- cation2011,,3:1
11Contribution of endothelial nitric oxide to blood pressure in humans显示文摘Gamboa A Shibao C Diedrich A 2007Hypertension2007,49,:1
12A two-stage optical frequency comb generator based on Mach-Zehnder modulator and Re-circulating frequency shifter 显示文摘LI Yulong WU Shibao FEI Yue 2014Optik-lnternational Journal for Light and Electron Optics(S0030-4026)2014,125,3:1
13Interannual varia- bility of the Kuroshio extension and its relation to the Southern Oscillation/El Nino显示文摘Yamagata T Shibao Y Umatani S 1985Journal of Oceano- graphic Society1985,41,4:1
14Interannual variability of the Kuroshio extension and its relation to South Oscillation/E1 Nifio显示文摘Toshio Yamagata Yoshiaki Shibao Shin-ichiro Umatanit 1985Journal of the Oceanographical Society of Japan1985,,41:1
15Air trapping:The major factor limiting diaphragm mobility in chronic obstructiv pulmonary disease patients显示文摘Dos Santos Yamaguti WP Paulin E Shibao S 0,,:1
16Experimental Investigation of Flexure Properties for High-Strength Corrugated Composite Paperboard显示文摘Wen Shibao 2012Applied Mechanics and Materials2012,200,:1
17Procalcitonin as an early di- agnostic marker for ventriculoperitoneal shunt infections显示文摘Tomio R Akiyama T Shibao S 2013Surg Infect(Larchmt)2013,14,5:1
18Exploring Teacher Education in the Context of Canada and China: A Cross-Cultural Dialogue 显示文摘Shibao Guo Lydia Pungur 2008Frontiers of Education in China2008,3,2:1
19The Changing Faces of Chinese Immigrants in Canada 显示文摘Guo Shibao DeVoretz D 2006Journal of International Migration and Integration2006,,3:1
20Procalcitonin as an Early Diagnostic Marker for Ventriculoperitoneal Shunt Infec tions显示文摘Tomio R Akiyama T Shibao S 2013Surgical infections2013,14,5:1
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