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Search Results: 1 - 10 of 41197 matches for " Tian-Peng Yin "
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Two new glucosides from the pellicle of the walnut (Juglans regia)
Le Cai,Chuan-Shui Liu,Xiao-Wei Fu,Xiao-Jing Shen,Tian-Peng Yin,Ya-Bin Yang,Zhong-Tao Ding
Natural Products and Bioprospecting , 2012, DOI: 10.1007/s13659-012-0009-0
Abstract: A new α-tetralonyl glucoside, 6′-O-acetyl-juglanoside E (1), and a new dihydrophaseic acid glucoside, dihydrophaseic acid 1-O-(6-O-acetyl)-glucopyranoside (2), together with two known ones, juglanoside E (3) and dihydrophaseic acid (4), were isolated from the pellicle of the walnut (Juglans regia). The structures of the new compounds were elucidated by comprehensive spectroscopic analysis, including IR, HRESIMS, 1D and 2D NMR data.
Response of Mycorrhizal Fungi to CO2 Rising and N Deposition: A Review

GAO Tian-peng,

中国沙漠 , 2009,
Abstract: 气候变化是全球普遍关注的环境问题,尤其是工业革命以来,全球CO2浓度升高和N沉降的增加,不仅改变了植物的生长发育、生态系统中碳、N生物地化循环,而且影响着与植物共生的菌根真菌.对外生菌根真菌(Ectomycorrhizal fungi,ECMF)和丛枝菌根真菌(Arbuscular mycorrhizal fungi,AMF)的群落结构、真菌的侵染率以及菌丝生物量等方面如何响应全球CO2浓度升高和N沉降的增加进行了综述,同时对当前存在的问题和未来的发展方向进行探讨.
Data mining in P2P networks

LIU Tian-peng,ZHOU Ya,

计算机应用 , 2008,
Abstract: To analyze both the operational mechanism of current distributed data mining and the characteristics of the P2P technology: non-centralized peer and asynchronism, by extending the iterative process of classical K-mean algorithm, a distributed data mining algorithm was designed in this paper to implement k-mean thinking in a P2P networks. This algorithm exchanges information only between directly connected nodes, and can cluster local data on each peer in a global view. Finally, simulation experiments show that the algorithm is effective and accurate.
Effect of Rare Earth Metal Yttrium on Microstructure and Wear Resistance of Vacuum Fusion Sintered Ni-Based Coating

XUAN Tian-peng,MIN Dan,HUO Ying,

摩擦学学报 , 2005,
Abstract: The effect of rare earth metal yttrium on the microstructure, chemical composition, hardness, and wear resistance of vacuum fusion sintered Ni-based coatings was studied. Thus the elemental compositions and phase compositions of the alloy coatings were determined using an energy dospersive X-ray analyzer and an X-ray diffractometer, respectively. The friction and wear behaviors of the coatings were evaluated on an MM-200 test rig in a lock-on-ring configuration under oil-lubricated condition. The worn surface morphologies of the coatings were observed using a scanning electron microscope. The results showed that the rare earth metal yttrium was beneficial to improving the microstructure of Ni60 coating, restraining the precipitation of the needle-shaped phase, and making the size of the sphere-shaped decreased. Moreover, yttrium helped to alleviate the dilution function of the Fe atom from the steel matrix to the Ni-based alloy coating, while it was able to decrease the Fe content and increase the Ni and Cr contents of the coating. Besides, yttrium contributed to greatly increasing the hardness and wear resistance and decrease the friction coefficient of the Ni60 coating, while it led to a transformation of the micro-plowing and micro-peeling wear modes of the Ni60 coating to micro-plowing.
Characteristics of wild boar (Sus scrofa) mud bath sites on the northern slope of Funiu Mountain
伏牛山北坡野猪(Sus scrofa)泥浴场的生境特征

DENG Tian-Peng,ZHENG He-Xun,ZENG Guo-Shi,

生态学报 , 2009,
Abstract: Mud bath sites of the wild boar (Sus scrofa) were investigated in June-August 2005 on the northern slope of Funiu Mountain.. Fourteen ecological factors (Vegetation type, Elevation, Slope, Location, Aspect, Distance to water source, level of concealment, Distance to human disturbance, Canopy cover, Soil traits, average distance to trees, average distance to shrubs, average distance to tree-falls, average distance to stumps) were recorded in each of 20 m×20 m plots. The data thus collected were analyzed using Cluster Analysis and Principal Component Analysis. The results showed that mud bath sites of the wild boar shared the following characteristics: absence of tree-falls and stumps, high levels of concealment, loess soil, canopy cover > 80%, average distance to trees moderate, average distance to shrubs less than 1 m, slope less than 30, broadleaf forest vegetation, distance to human disturbance greater than 500 m, and altitude greater than 1000 m. There were no obvious preferences concerning location and distance to water source.
Summer cave selection of Hog badger (Arctonyx collaris) on the north slope of Funiu Mountain
伏牛山北坡猪獾(Arctonyx collaris)夏季巢穴特征

ZENG Guo-Shi,ZHENG He-Xun,DENG Tian-Peng,

生态学报 , 2009,
Abstract: Summer caves of Hog badger (Arctonyx collaris) were surveyed on the north slope of Funiu Mountain in July and August, 2005. Sixteen environmental variables possibly pertaining to cave selection were measured, including altitude, vegetation type, slope, aspect, location, level of cave concealment, distance to water source, distance to disturbance, canopy cover, level of entrance concealment, number of entrances, cave type, average distance to trees, average distance to shrubs, shrub density, and tree falls. The results showed that summer caves of the Hog badger were located in broadleaf forests with high levels of canopy cover, shrub density and concealment, at an elevation of 900-1200 m on sunny and semi-sunny slopes, and on average 75-150 cm away from trees. Most caves were natural rock formations with only one entrance. The caves were usually close to human residences and less than 100 m from a water source. Tree falls were not favored by the Hog badger.
Study of central plasma structure using soft X-ray signals

Ma Tian-Peng,Hu Li-Qun,Chen Kai-Yun,

物理学报 , 2009,
Abstract: A method for studying the central plasma structure using soft X-ray signals in the HT-7 tokamak is reported. Through analysing a typical discharge with MHD instability, the position and rotation direction of magnetic island are obtained from the soft X-ray signals. The magnetic island position and rotation direction are validated from the contour map of soft X-ray emissivity and the m=2 mode rotation direction observed on the Mirnov signals.
Process of high-temperature compost of sheep manure with addition of wheat straw

ZHANG Ming,GAO Tian-Peng,LIU Ling-Ling,ZHANG Jian,YUE Bin,

中国生态农业学报 , 2010,
Abstract: The effect of wheat straw on sheep manure high-temperature compost was studied.Results show that addition of wheat straw during sheep manure composting shortens the time to high-temperature fermentation,decreases nitrogen loss and accelerates rate of C/N decline.During composting,high-temperature fermentation layer diffuses from the middle to upper and lower layers.At the initial stage,a positive proportional relation exists between the loss rate of organic matter and wheat straw ratio.At late composting,ho...
Research Advances on Rare and Endangered Plants Cistaceae

GAO Tian-peng,ZHANG Yong,JIN Ling,CHEN Tuo,XU Shi-jian,AN Li-zhe,
,张 勇,晋 玲,陈 拓,徐世健,安黎哲

中国沙漠 , 2006,
Abstract: Common rock-rose Helianthemum soongoricum Schrenk and H.ordosicum Y.Z.Zhao,Z.Y.Zhu et R.Cao are usually bushes sparsely annual or perennial herbal relic plants.There are about 200 species in 8 genera that distributes along Mediterranean.Among them,2 species distribute in Inner-Mongolia and Xinjiang Uigur autonomous region in China.Common rock-rose was listed a important protected plant by Chinese government due to that natural disaster,human activities and over-development have caused biomass reduce,population decrease and community downfall.It is a great importance to study and protect the rare and endangered plants common rock-rose Helianthemum soongoricum Schrenk and H.ordosicumY.Z.Zhao,Z.Y.Zhu et R.Cao in China.
Effect of Soft Fibrin Gels onTransdifferentiation Behaviour in Activated Hepatic Stellate Cell

陈 烨,胡文慧,曾 柱,李 兴,蒋天鹏,王黎洲,周 石,宋 杰
,HU Wen-hui,ZENG Zhu,LI Xing,JIANG Tian-peng,WANG Li-zhou,ZHOU Shi

- , 2018, DOI: A
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