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We report a simulation study of the characteristics of a new tunnel field effect transistor (TFET), i.e., vertical TFET (VTFET). The new VTFET has a different working principle compared with the traditional lateral TFET (LTFET), which most of the recent studies are focused on. Although both type TFETs are based on band to band tunneling, the tunneling occurs perpendicular to the oxide-Si interface...
Batch experiments were carried out to determine the capacity of Pseudomonas fluorescens biomass to adsorb Sr(II) ions from aqueous solution with respect to pH, initial Sr(II) concentration, contact time and biomass dose. The FTIR results of Pseudomonas fluorescens biomass showed that biomass has different functional groups and these functional groups are able to react with metal ion in aqueous solution...
In the present study we reported the feasibility of extracellular biopolymer(PF-9) produced by Pseudomonas fluorescence C-9 as an alternative biosorbent to remove Ni(II) metallic ions from environmental and industrial wastewater. The ability of PF-9 to remove the Ni(II) ions was investigated by using batch biosorption procedure. The effects such as pH, dosage of biosorbent, Ni(II) initial concentration...
As the ecological and environmental problems become increasingly severe, Payments for Environmental Services (PES) has now become an effective means of resolving the issues of natural resource management. Based on considerations of social equity and effect of poverty alleviation in the PES schemes, it becomes the common concern issue for the research on the poor's effect in the research of PES scheme...
The modified nanometer-sized TiO2 as a solid sorbent was prepared by using impregnation method, and characterized by using SEM. The adsorption properties of the sorbent to Co(II) in static system, main factors affecting the adsorption and desorption, adsorption isotherms and influence of coexisting ions on the determination of Co(II) were investigated by FAAS, and regeneration experiments were carried...
The objective of this study is to assess the environmentally friendly Ni(II) adsorption from synthetic wastewater using extracellular biopolymer(PS-2) produced by Pseudomonas fluorescence C-2. The ability of PS-2 to remove the Ni(II) ions was investigated by using batch biosorption procedure. The effects such as pH, dosage of biosorbent, Ni(II) initial concentration and sorbate-sorbent contact time...
The dithizone modified sodium trititanate whisker as a solid sorbent was prepared by using impregnation method. The adsorption properties of the sorbent to Cd(II) in static system, main factors of affecting adsorption and desorption, adsorption capacity and influence of coexisting ions on the determination of Cd(II) were investigated by flame atomic adsorption spectrometry (FAAS). The selection experiment...
This paper proposes a new motion vector (MV) smoothing algorithm to track the real motion in image sequences for MPEG video encoders. First, a pre-checking algorithm is employed to eliminate wrong motion vectors and preserve all possible motion vectors. For each block considered, the motion similarity between the neighboring blocks and the number of candidate motion vectors are jointly exploited to...
In this paper we propose a novel method for moving cast shadows detection. Based on the analysis to the physical model of moving shadows, we prove that the ratio edge is illumination invariant. The distribution of the ratio edge is discussed and a significance test is performed to classify each image pixel into foreground object or moving shadow. Experimental results on typical scenes show that the...
In many image and computer vision applications, shadows interfere with fundamental tasks such as moving objects segmentation and tracking. In this paper, a novel method is proposed to detect the moving cast shadows in the scene. The normalized coefficients of orthogonal transform of image block are proved to be illumination invariant and are used to classify moving shadows and foreground objects....
In this paper, a low-cost technique to measure the distance between a near-field probe and a planar antenna under test (AUT) is presented. This technique uses an unshielded printed ring resonator whose resonant frequency is shifted by varying its proximity to the AUT. The distance is derived from measured return loss of the ring resonator. The sensitivity of the resonant frequency with respect to...
In this paper, a substrate integrated waveguide (SIW) model has been used to analyze the gate modulation of field effect transistors (FET) with a molecular channel of nanoscale material. By neglecting quantum mechanical effects and by treating nanoscale material as a “rigid” substrate, static electric field distribution inside the FET channel is analyzed. Numerical results show that the modulated...
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