the study aimed to investigate the adsorption mechanism of di-n-butyl phthalate (dbp) onbrown soil and red soil in shenyang and hunan province, respectively, china. adsorption kinetics andisotherms experiments were conducted at 288, 298 and 308 k, respectively. results of kinetics showed thatadsorption of dbp exhibited a two-step process in both brown and red soil. different models were used to...

the spectroscopic properties of the 2,2,6,6-tetramethyl-piperidine-1-oxyl (tempo) radicalderivatives of the fullerene (c60) were theoretically investigated. the ground state optimizedstructures of the radical adducts of the fullerene were calculated by using dft (b3lyp) with 6-31g(d) level. it was concluded that a 6-6 ring junction of c60 moiety generally covalently links to thepiperidine ring ...

Post-mining sites have a significant impact on surrounding ecosystems. Afforestation can restore these ecosystems, but its success and speed depends on the properties of the excavated spoil substrates. Thermal infrared remote sensing brings advantages to the mapping and classification of spoil substrates, resulting in the determination of its properties. A library of spoil substrates containing...

In this study, a spectral graph-theoretic grouping strategy for weakly supervised classification is introduced, where a limited number of labelled samples and a larger set of unlabelled samples are used to construct a larger annotated training set composed of strongly labelled and weakly labelled samples. The inherent relationship between the set of strongly labelled samples and the set of unla...

vertebrobasilar insufficiency is the cause of cerebrovascular accidents in 20% of cases. there are few reports regarding spectral doppler indices (sdis) of vertebral arteries (vas) normal blood flow. the objective of this study was to provide basic reference data about sdis of vas normal blood flow separately and in comparison with internal carotid arteries (icas) and common carotid arteries (c...

A reduced set of measurement geometries allows the spectral reflectance of special effect coatings to be predicted for any other geometry. A physical model based on flake-related parameters has been used to determine nonredundant measurement geometries for the complete description of the spectral bidirectional reflectance distribution function (BRDF). The analysis of experimental spectral BRDF ...

Spectrogram factorization techniques decompose a sound into a set of characteristic spectral shapes and a set of corresponding temporal evolutions. This can be exploited for a cross-synthesis-like processing by combining the spectral shapes of one sound with the temporal evolutions of the other. A system is proposed that implements such a task in an unsupervised way by means of a comparison of ...

This paper describes a set of procedures, named Toolbox, for spectral data reduction to be used in additive synthesis system based on sinusoidal model. The Toolbox has been developed in MATLAB with the specific aim to support the realization of a very large scale additive synthesis system (AddSynth) based on special purpose VLSI chips. Test signals and musical tones played by real acoustic inst...

This paper presents the evaluation of the average spectral efficiencies provided by the adaptive employment of a set of LDPC-coded QAM modulations in an OFDMA downlink scheme over mobile radio channels, assuming a joint channelaccess method modeling. It discusses the selection of the set of coded modulations, the setting of the SINR domains where they are optimal and derives the average spectra...

Using data fusion of multi-spectral and microwave radar images, a semiautomatic method is developed based on the level set method for application to urban road extraction. The fast marching method of level set makes data fusion. Radar remote sensing image can make up road breaks due to shadowing of high building or tree canopy in multi-spectral image, while multi-spectral image can be of helpfu...