Characterization of biogenic iron oxide sheaths produced by Leptothrix ochracea (L. ochracea) was investigated. The sheaths had average inner- and outer-diameters of 1.08 ± 0.15 and 1.35 ± 0.14 μm, respecti...
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ISBN:
(纸本)9788880800842
Characterization of biogenic iron oxide sheaths produced by Leptothrix ochracea (L. ochracea) was investigated. The sheaths had average inner- and outer-diameters of 1.08 ± 0.15 and 1.35 ± 0.14 μm, respectively. Their length ranged from 10-2000 μm. Outer and inner surface of each sheath were composed of fibrous and spherical particles, respectively. The width of fibrous particles was approx. 20 nm, while the diameter of spherical particles was 20-120 nm. The chemical composition of the sheaths was Fe: Si: P = 73: 22: 5 with the exception of H and O. The sheaths had similar structure to that of 2-line ferrihydrite.
When 3D conformal radiotherapy treatment planning (3D CRTP) is employed for tumor treatment, the relative position between the tumor and its adjacent tissues could be obtained easily through analysing the medical data...
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When 3D conformal radiotherapy treatment planning (3D CRTP) is employed for tumor treatment, the relative position between the tumor and its adjacent tissues could be obtained easily through analysing the medical data sets which are fused the information of functional images and anatomical images. In order to implement effectively and efficiently the fusion of mass multimodal medical images data, a parallel multimodal medical image fusion method based on wavelet transform with fusion rule of combining the local standard deviation and energy is proposed. Experiments demonstrate the good performance of the proposed method.
Based on the general theory of mode coupling and principle of the mode converter with cosinusoidal profile, we design a transition section for 94GHz gyrotron oscillator. Numerical calculation and three-dimension elect...
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Based on the general theory of mode coupling and principle of the mode converter with cosinusoidal profile, we design a transition section for 94GHz gyrotron oscillator. Numerical calculation and three-dimension electromagnetic simulation for the suggested transition section are made. The results show that the 94GHz-TE 01 -mode transition section has transmission efficiency 98.8% and low reflection below -40db within a wide bandwidth 4GHz. It is a timesaving method to design a transition section with the profile by our design.
The scope of the study presented in this paper is the performance of an OFDMA cellular system under different RRM (radio resource management) algorithms. Three different RRM algorithms are applied on an OFDMA system w...
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ISBN:
(纸本)9780863418426
The scope of the study presented in this paper is the performance of an OFDMA cellular system under different RRM (radio resource management) algorithms. Three different RRM algorithms are applied on an OFDMA system with omni-directional antennas. Adaptive modulation is also considered for these algorithms. The achievable total bit rate in the downlink for the whole system and the central cell is the parameter under consideration. The behaviour of the algorithms in scenarios where users request different bit rates is also highlighted. (5 pages).
The issue of UMTS WCDMA radio network planning with beamforming antenna arrays (AAs) at the base station, synthesizing a grid of beams, is discussed in this paper. With the help of a static network simulator, two poss...
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ISBN:
(纸本)9780863418426
The issue of UMTS WCDMA radio network planning with beamforming antenna arrays (AAs) at the base station, synthesizing a grid of beams, is discussed in this paper. With the help of a static network simulator, two possible beamforming solutions in UMTS are presented and compared. In the first method each beam has its own primary common pilot channel (P-CPICH) and represents a logical cell transmitting under a unique primary scrambling code. In the second method each beam is associated with a unique secondary common pilot channel (S-CPICH) and different beams are scrambled with the same scrambling code in order to preserve orthogonality. Simulation results show that the first method is less attractive due to higher soft handover overhead and lower system capacity.
This paper introduces a planning method for handling furniture which exists in real world. We propose a method which is easily expandable its handle able furniture such as closet, shelf and so on. If the robot can han...
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This paper introduces a planning method for handling furniture which exists in real world. We propose a method which is easily expandable its handle able furniture such as closet, shelf and so on. If the robot can handle such furniture autonomously, it is expected that multiple daily tasks, for example, storing a small object in a drawer, can be achieved by the robot. Because perplexing processes is needed to give the knowledge of furniture handling to the robot manually, we propose direct teaching based approach which can easily give not only how to handle the furniture but also an appearance and 3D shape of it. Combining general knowledge given in advance and manipulation procedure instructed by human directly, the robot acquires how to manipulate the storing places. The performance of the proposed method is illustrated by experiments.
In this paper, we introduce two our approaches to browse large Web pages designed for desktop PCs using mobile devices with small screens and poor input interfaces. In the first approach, multiple mobile users collabo...
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There were some deficiencies existing in most popular modeling methodologies and tools for Enterprise Resource Planning (ERP) system. To solve these problems, a new modeling tool, Huiton ERP-Modeling (HEM) was designe...
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There were some deficiencies existing in most popular modeling methodologies and tools for Enterprise Resource Planning (ERP) system. To solve these problems, a new modeling tool, Huiton ERP-Modeling (HEM) was designed to support full lifecycle modeling for ERP systems, with emphasis on the forward transformation and reverse traceability among models of different phases. The business meta-model of HEM, and the concrete modeling architecture and modeling process were elaborately proposed by analysis on the modeling requirements of full lifecycle. For this tool, the Segment was adopted as the basic organization unit for ERP models, the content objects and graph objects were used as the basic model information organization unit. Dynamic configuration on modeling framework and model contents was also supported in HEM. In addition, several extensible Markup Language (XML) based model transformation languages to support the automatic transformations from ERP models to Word-based documents and Java-based source codes were briefly introduced.
Cellular phones are widely used to access the Web. However, most available Web pages are designed for desktop PCs, and it is inconvenient to browse these large Web pages on a cellular phone with a small screen and poo...
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