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Log integration on large scale for global networking monitoring
Springer Science and Business Media LLC - Tập 16 - Trang 976-981 - 2009
Supposing that the overall situation is dug out from the distributed monitoring nodes, there should be two critical obstacles, heterogenous schema and instance, to integrating heterogeneous data from different monitoring sensors. To tackle the challenge of heterogenous schema, an instance-based approach for schema mapping, named instance-based machine-learning (IML) approach was described. And to ......
Mechanism analysis on pillar instability induced by micro-disturbance under critical condition
Springer Science and Business Media LLC - Tập 12 - Trang 346-348 - 2005
A simplified mechanical model of ultra-high pillar was established and its potential energy expression was derived under axial load on the basis of energy theory. Under critical conditions according to the nonlinear theory, the critical behaviors and the forming mechanism of pillar instability were discussed by external disturbance, such as stresses waves by blasting, axial force eccentricity rath......
Multi-objective coordination optimal model for new power intelligence center based on hybrid algorithm
Springer Science and Business Media LLC - Tập 16 - Trang 683-689 - 2009
In order to resolve the coordination and optimization of the power network planning effectively, on the basis of introducing the concept of power intelligence center (PIC), the key factor power flow, line investment and load that impact generation sector, transmission sector and dispatching center in PIC were analyzed and a multi-objective coordination optimal model for new power intelligence cent......
Nondestructive testing for crack of tunnel lining using GPR
Springer Science and Business Media LLC - Tập 12 - Trang 120-124 - 2005
Lining craze, as a common engineering damage, affects the bearing capacity and the safety of tunnels. To improve the capabilities of the surface crack detection in the tunnel lining, ground penetrating radar (GPR) was employed. The principle and method of GPR for cracks investigation of tunnel lining were expounded. As an application example, some field measurements in order to detect the depth of......
Component analysis of volatile oil from Illicium Verum Hook. f.
Springer Science and Business Media LLC - Tập 9 - Trang 173-176 - 2002
Volatile oil was extracted from Illicium Verum Hook. f. by using steam distillation. 41 kinds of compounds were separated and identified by GC/MS, and their relative contents were determined by normalization method. Among 41 identified compounds, there are 14 hydrocarbon components and 22 oxygenated hydrocarbon derivatives, and a small amount of nitrogenous compounds. The main component is anethol......
Influence of Tb substitution on low-field magnetocaloric effect in Gd5Si1.72Ge2.28 alloy
Springer Science and Business Media LLC - Tập 15 - Trang 429-433 - 2008
The lattice parameters, magnetic phase transition, Curie temperature and magnetocaloric properties for (Gd1−xTbx)5Si1.72-Ge2.28 alloys with x = 0, 0.15, 0.20 and 0.25 were investigated by X-ray powder diffractometry and magnetization measurements. The results show that suitable partial substitution of Tb in Gd5Si1.72Ge2.28 compound remains the first-order magnetic-crystallographic transition and e......
Preparation of p-menthane hydroperoxide from p-menthane in presence of metalloporphyrins
Springer Science and Business Media LLC - Tập 14 Số 5 - Trang 660-665 - 2007
Study on shaxi porphyry copper-gold deposit in anhui: gold mineralization and occurrence determination by PIXE
Springer Science and Business Media LLC - Tập 10 - Trang 352-358 - 2003
Shaxi porphyry Cu-Au deposit was one of the important discoveries of the exploration in the middle-lower reaches of Yangtze River in China in 1970’s. Gold occurrence in the Shaxi porphyry copper-gold deposit (central Anhui province, eastern China) was investigated by means of microscope analyses, EPMA and PIXE. Combined with geological and mineralogical methods, the characteristies of occurrence o......
Evaluation of group effect of pile group under dragload embedded in clay
Springer Science and Business Media LLC - Tập 16 - Trang 503-512 - 2009
A simple semi-empirical analysis method for predicting the group effect of pile group under dragload embedded in clay was described assuming an effective influence area around various locations of pile group. Various pile and soil parameters such as the array of pile group, spacing of the piles (S), embedment length to diameter ratio of piles (L/D) and the soil properties such as density (γ), angl......
Purification and characterization of extracellular chitinase from a novel strain Aspergillus fumigatus CS-01
Springer Science and Business Media LLC - Tập 16 - Trang 552-557 - 2009
Twelve samples derived from different locations in south central area of China are treated by enrichment and spread-plate technique for initial screening. Seven chitinase-producing strains are isolated. The chitinase present in the culture supernatant of strain CS-01 possesses the maximum activity of 0.118 U/mL. Analysis of the morphological feature and the ITS rDNA sequence reveals that strain CS......
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