Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2748

Table of Content: 15 May, 2014; 9(9)

May 2014

Risk analysis and assessment on construction operation based on human factors and empirical Bayesian theory

This study was focused on the roles of human factors in construction accident and also dealt with the probabilities of fours levels of injury. We used an empirical Bayesian method and the human factors analysis and classification system framework to analyze the probability distributions of the severity of accidents of high risk operations in hydropower construction. Accident severity in four levels of injury was...

Author(s): Kai-Chang Sun and Jian-Lan Zhou

May 2014

Near-infrared spectra quantitative analysis for flue gas of thermal power plant based on wavelength selection

This paper proposed a near-infrared (NIR) spectra quantitative analysis method for flue gas of thermal power plant based on wavelength selection. For the proposed method, the self-adaptive accelerated particle swarm optimization is presented for determining the most representative wavelengths of NIR spectral signals and is combined with partial least square for predicting the various contents of the real flue gas...

Author(s): Hui Cao and Yan Zhou

May 2014

Biogas production potential of transgenic Vetiveria zizanioides in mesophilic batch anaerobic digestion

Transgenic Vetiveria zizanioides were anaerobic digested in a batch laboratory scale reactor at mesophilic conditions (30°C). Grinding and shearing, two kinds of processing methods were used. During total fermentation time of 80 days, the production potential of biogas were 310 mL/g·TS, 332 mL/g·VS in the grinding processing group and 322 mL/g·TS, 349 mL/g·VS in the shearing processing...

Author(s): Peipei Sun, Wudi Zhang, Fang Yin, Xingling Zhao, Jing Liu, Yubao Chen and Shiqing Liu

May 2014

Sustainable development of landscape environment of traditional Changzhen

Old town is like living fossil which has accumulated rich historical connotations; the one carrying the history of a region’s political, economic, cultural and ecological changes as well as the formative art created by collective labors and wisdoms of generations. The preservation of ancient Chinese dwellings and old towns began late; many historical architectures and traditional country fairs are forcibly removed...

Author(s): Jia Yuanyuan, Lu Junfu and Qing Ling

May 2014

Research on the transient radial force of the centrifugal pump

The three-dimensional unsteady flow field in centrifugal pump under different flows was numerically simulated based on the commercial fluent software, using standard k-ε turbulence model, SIMPLE algorithm and sliding mesh technique. The characteristics of the time domain and frequency domain of the pressure pulsations, as well as fluctuation strength were analyzed. The varying locus of transient radial force...

Author(s): Wei Li, Weidong Shi, Zhongyong Pan, Xiaoping Jiang, and Ling Zhou,

May 2014

Development of a method to detect infectious rotavirus and astrovirus by reverse transcriptase polymerase chain reaction (RT-PCR) with propidium monoazide (PMA)

Rotavirus and astrovirus are two kinds of water-borne pathogens that can cause severe diarrhea in children, infants and immunocompromised humans. Both can be present in untreated and inadequately treated water. Molecular methods, such as the reverse transcriptase polymerase chain reaction (RT-PCR), have been used to detect two viral genomes in a few hours, but they cannot distinguish between infectious and noninfectious...

Author(s): Wei Yumei , Liu Tingting, Wang Jingqi,  He Xiaoqing and  Wang Zijian

May 2014

Effect of Ozone fumigation on morpho-physiology and yield of field-grown rice in Pearl River Delta, China

Ozone pollution may cause a reduction in grain crops production. The response relationship between plants and Ozone is an important factor to assess the effect of Ozone pollution. In order to learn the effect of Ozone pollution on major grain crops in Pearl River Delta, this study used Open-top chamber (OTC) to fumigate the rice in the field, and researched the effects on the physical manifestations, physiological form...

Author(s): Qiong Wang,, Bilige Sude, Ming Dong,, Yuan Shi, Chunmei Geng and Xiaoke Wang

May 2014

Design of indoor dust concentration monitor based on light scattering detection method

Inhalable particles and fine particulates in dust will pollute the indoor environment and endanger people's health. It is an important task to take effective measures to control indoor dust pollution. The key is to keep abreast of the dust concentration, and to monitor, control and evaluate the sources of indoor dust pollution. This paper analyzes the main sources and characteristics of indoor dust and uses dust...

Author(s): Li Tianhua and Wu Ying

May 2014

Analysis of the shape of bearing push-extend reamed affecting the bearing capability of the pile of push-extend multi-under-reamed pile through the finite element method

In the paper, through use of ANSYS software of the finite element method to establish the simulation analysis model about the stress of soil around the pile, we obtained the normal and shear stress curve when the bearing push-extend reamed have different shapes under the same loads. It qualitatively analyzed the influence of bearing capacity on the push-extend Multi-under-reamed pile raised by the different shapes of...

Author(s): Yongmei Qian, Xihui Wang and Guanghan Xu

May 2014

Two-phase closed-loop system identification method based on the auxiliary model

The two-stage recursive extended least squares parameter estimation algorithm based on the auxiliary model of a class of closed-loop identification system model is presented in this paper. The basic idea of the algorithm is a combination of the auxiliary model identification ideas and the decomposition technique in which the closed-loop system is converted to a two-step process and each step identified model is an...

Author(s): Jie Jia, Jiao Cao, Yong Yang, Zhiteng Liu and Shuying Huang

May 2014

Research on the topology control algorithm to maximize the Ad Hoc life cycle

For Ad Hoc network, nodes move randomly with limited energy and self-organization; there is multi-hop of complex network, however, in order to extend the life cycle of Ad Hoc network effectively. This research was aimed at improving LEACH algorithm clustering on Ad Hoc network, constructing Ad Hoc network topology based on small world, making nodes that can still continue to maintain communication under the...

Author(s): Wenbo Zhang, Yongxin Feng, Xiaobo Tan and Lidong Fu

May 2014

Hydrochemical characteristics of groundwater in Tongchuan City, China

In order to reveal the formation mechanism of hydrochemical characteristics in Tongchuan City, we collected and detected 39 samples of underground water. Correlation analytical method, hydrochemical method and ion ratio coefficient method were employed to investigate the hydrochemical characteristics, influencing factors and principles of changing. Results demonstrate that the main factors, controlling the shallow water...

Author(s): Zhang Yuxi, Zhang Yuanjing and Liu Jingtao

May 2014

Calculating cyan-magenta-yellow-black (CMYK) printer’ gray component data based on polynomial modeling

As gray color data is very important for printing quality, a method based on polynomial modeling is proposed to calculate the gray color data of different lightness. Firstly, the IT8.7/3 color target which defines input cyan-magenta-yellow-black (CMYK) signals is printed, and the corresponding CIELAB (Commission Internationale de l'Eclairage L*, a* and b*) values are obtained by a spectrophotometer with color...

Author(s): Sun Bangyong, Liu Han and Zhou Shisheng

May 2014

The reliability test assessment of three-parameter Weibull distribution of material life by Bayesian method

This paper is mainly according to Bayesian formula and using Bayesian method to estimate parameter truth-values of three-parameter Weibull distribution to achieve material reliability evaluation. The parameter values estimated by maximum likelihood method as the prior information of Bayesian estimation, assume that the parameter obeys a certain distribution and let the certain distribution as the prior distribution of...

Author(s): Xintao Xia, Yuanyuan Qin, Yinping Jin and Ming Qiu

May 2014

Assessment for the quality of rolling bearing parts based on fuzzy theory

There are many factors leading to rolling bearing failure, and the issue of parts quality like roller error and inner ring error is one of the main influence factors causing premature failure of the bearing. Assessment for bearing parts quality can obviously eliminate or minimize the chance of potential failure, and can improve the service life of bearing, wear-resisting property and reliability. For the sake of the...

Author(s): Xintao Xia, Yanyan Meng, Yantao Shang and Ming Qiu

May 2014

Air gap field-oriented vector control strategy for high-power electrically excited synchronous motor based on full-order flux linkage observer

This paper raises a full-order flux linkage observer for the high-power electrically excited synchronous motor and proposes a design for its feedback matrix based on modern control theories which ensure excellent dynamic and static performances of this full-order flux linkage observer. On the basis of the said full-order flux linkage observer, an air gap field-oriented vector control strategy for the electrically...

Author(s): Jing Shang, Xiaohong Nian and Kean Liu

May 2014

A novel fusion algorithm for infrared image and visible light image based on non-subsampled contourlet transform

Aiming at the different characteristics of the infrared image and visible light image, the paper proposed a kind of fusion algorithm for the infrared image and visible light image based on non-subsampled contourlet transform. Firstly, the source images are made multiscale and multi-direction decomposition by using non-subsampled contourlet transform (NSCT). Secondly, to decomposed low frequency subband, a...

Author(s): Yucheng Liu and Yubin Liu

May 2014

Rural residents’ acceptance towards a telehealth system: The integrative perspective of technology acceptance model and social cognitive theory

The purpose of the study is to integrate technology acceptance model (TAM) and social cognitive theory (SCT) to explore the usage intention model of telehealth systems. A survey of valid 480 users of telehealth was conducted to validate the proposed model. The findings show that computer anxiety has negatively significant effects on computer self-efficacy. Computer self-efficacy has positively significant effects on...

Author(s): Chung-Hung Tsai

May 2014

Safe and efficient mining technology for full-mechanized caving face of deep mine with capacity of ten million tons

Based on a highly intensive mining mode of “one mine, one coalface, ten million tons”, safe and efficient mining technology for full-mechanized caving face of deep mine with capacity of ten million tons is proposed to deal with technical problems such as high ground pressure, high ground temperature, high water pressure and easy spontaneous combustion of coal seam in Longgu coal mine. The surrounding rock...

Author(s): Ma Liqiang,, Sun Hai,, Jin Zhiyuan,, Wang Fei, and Li Pan,

May 2014

Characterization of WPI-NaCas composite films modified by transglutaminase

Synergistic effects of additive amount, reaction time and temperature of transglutaminase on properties of WPI-NaCas composite protein films were discussed by orthogonal experiments. Results indicated that transglutaminase (TGase) modification decreased D50 and D90 of film-forming solution particles, resulting in decrease in water solubility and increase in both mechanical and water barrier properties of films under...

Author(s): Lei Qiao, Pan Jiazhen, Huang Zhiying, Bao Jianqiang and Xun Qiannan

May 2014

Microarrays revealed general-key genes responsive to implantation of low-energy N+ ion beam in rice

Implantation with low-energy ion beam can induce various plant biological effects including stimulation, damage and mutation. But the adaptive mechanism altering gene expression in response to this stressor in plant is not fully understood. A highly thorough and comprehensive analysis to investigate the general-key genes responsive to implantation with low-energy ion beam in plant is important to understand the diverse...

Author(s): Ya Huiyuan, Chen Qiufang, Wang Weidong and Jiao Zhen

May 2014

Study on the warp and weft direction conductivity of anti-radiation knitted fabric

Measured by electrical experiments involving knitted warp and weft direction conductivity, we concrete analysis on the factors that affect electromagnetic shielding effectiveness of the knitted fabric. The influence factors of preventing electromagnetic radiation fabric shielding performance is associated with the organization structure and related parameters of knitted fabric. These include: organization type, the...

Author(s): Zhu Xiao Yu