bluuebunny/crossref_metadata_2025 huggingface dataset:
Cyclic phosphate-linked oligosaccharides (CyPLOS): Novel carbohydrate-based synthetic ion transporters
Authors: Montesarchio Daniela
Published: December 2011

Artificial ion transporters are synthetic molecules mimicking at a functional level the activity of naturally occurring ion channels or carriers. In the frame of cyclodextrin mimicry, we recently described the synthesis and conformational properties of new carbohydrate-based macrocycles having the glucoside units connected through 4,6-linked phosphodiester linkages, named CyPLOS (cyclic phosphate-linked oligosaccharides). The cyclic dimer was then adopted as a versatile synthetic platform to obtain a variety of analogs, carrying long linear alkyl or polyether chains. Diverse, jellyfish-shaped amphiphilic CyPLOS were thus obtained, with the compound carrying four tetraethylene glycol (TEG) tentacles acting as good ion transporter through lipid bilayers. A fine tuning of the properties and complexation abilities of these amphiphilic analogs was realized by introducing special reporter groups at the extremities of the TEG tentacles. Through the design of an azido-TEG functionalized key intermediate, a fluorescently labeled CyPLOS derivative was synthesized, showing a markedly increased ionophore activity, with the fluorescent tag also allowing the investigation of its mechanism of action and localization within the phospholipid bilayers. Incorporation of a spin label at the CyPLOS tentacles—to provide further insight into the study of their interactions with phospholipid membranes by electron spin resonance (ESR) spectroscopy—was also profitably achieved through a postsynthetic functionalization approach.
Effects of a Brief Cognitive Intervention Aimed at Communicating the Negative Reinforcement Explanation for Smoking on Relevant Cognitions and Urges to Smoke
Authors: McDermott Máirtín S. , Marteau Theresa M. , Hajek Peter
Published: December 2011

Introduction:The aim of the current study was to assess the impact of an intervention aimed at communicating the negative reinforcement explanation for smoking, a set of ideas derived from popular self-help books, upon participants' cognitions and urges to smoke. Methods: Smokers (n = 205) undergoing standard stop-smoking treatment were randomised to receive either the experimental intervention, a brief intervention aimed at communicating the explanation or a control intervention, a video on the health risks of smoking. Outcomes were participants' acceptance of the negative reinforcement explanation for smoking, positive outcome expectations for smoking, self-efficacy and urges to smoke reported at one week post-cessation. Results: Post-cessation urges to smoke were similar in the two groups (Adjusted expt. group mean = 2.50, Control group mean = 2.75, F(1,60) = 0.98, p = .33). Other cognitive measures were also unchanged. Conclusions: The brief cognitive intervention offered as an adjunct to standard care failed to reduce urges to smoke or alter smokers' cognitions. Changing smokers' cognitions may be as challenging as changing their behaviours. Suggestions are provided for further research.
A Qualitative Evaluation of Knowledge of and Attitudes toward VA Smoking Cessation Services
Authors: Cunningham Cassie L. , Kaboli Peter J. , Ono Sarah , Vander Weg Mark W.
Published: December 2011

Introduction:The aim of this study was to assess Veterans' and primary care clinic staff's knowledge about, and experiences with, tobacco cessation services available through their Department of Veterans Affairs (VA) medical facility.Methods:Qualitative, semi-structured, in-depth interviews and surveys were conducted with 7 patients and 12 providers/clinic staff members at three VA primary care clinics serving large numbers of rural Veterans. Interviews were transcribed and coded for the- matic content.Results:Five primary themes emerged: (1) lack of knowledge about available cessation services, (2) smoking cessation services provided to patients, (3) perceived barriers to cessation and the provision of treatment, (4) patient receptiveness to treatment and primary care provider involvement, (5) recommended strategies for improving smoking cessation services.Discussion:Our findings suggest there is a considerable lack of knowledge regarding available tobacco cessation services in VA primary care clinics serving rural Veterans. While many patients expressed the opinion that VA was providing adequate care for nicotine dependence, they also identified important barriers to cessation and offered opinions regarding what more could be done to help them to quit smoking. Clinicians/staff also provided insight into barriers they encounter in the delivery of cessation services. Future work should focus on attempting to address these barriers.
Zur Struktur der Rechtfertigung (dargestellt an russischen und tschechischen literarischen Beispielen)
Authors: Borovanská Sabine
Published: December 2011

In the present paper, I describe the argumentative structure of justifications. Justifications are typical reactions to a reproach. With a reproach a speaker expresses a negative evaluation of an action of the counterpart. This negative evaluation is usually based on a common norm. The justification aims to a different, positive evaluation of this action by referring to a norm, from which the speaker presumes to stand above the reference norm of the reproach. The justification is successful when this assumption is also accepted by the one, who uttered the reproach. The argumentative structure can be described as a syllogism with an argument and a conclusion, which is based on an assumption or basis-conditional. It can be shown for a Russian and Czech literary corpus that common argumentation schemes, which remind of classical Grecian topoi, are often used in justifications.
Buchbesprechung
Authors: Goldschweer Ulrike
Published: December 2011

Tippner, Anja, Die permanente Avantgarde? Surrealismus in Prag. Köln; Weimar; Wien: Böhlau, 2009. 325 S., 19 Ill. auf Tafeln. ISBN: 978-3-412-07406-7
Proliferative effect of aqueous extract of Hyptis fructicosa on liver regeneration after partial hepatectomy in rats
Authors: Lima Sônia Oliveira , Viana Luciano da Costa , Santana Fábio Rafael Teixeira de , Zucoloto Ségio , Albuquerque Junior Ricardo Luiz de , Gomes Margarete Zanardo
Published: December 2011

PURPOSE: To evaluate the effect of aqueous extract of Hyptis fructicosa on hepatic regeneration after partial hepatectomy in rats. METHODS: Sixteen rats were divided in two groups: C (Control Group) and HF (Whose rats received aqueous extract of Hyptis fructicosa during 4 days using the dose of 100 mg/kg/day). On the consecutive day of this treatment, the animals of both groups underwent hepatectomy of about 67% of liver. Twenty four hours later, they were sacrificed, and the remaining mass of liver was removed and prepared to be studied through the PCNA immunohistochemical technique. RESULTS: The liver regeneration index of HF group was 53.56 ± 18.91%, while in C group was 21.12 ± 8.29% (p=0.0003). CONCLUSION: These results show that the administration of aqueous extract of Hyptis fructicosa using the dose of 100mg/kg/day increased the hepatocyte proliferation in the group HF.
Negative Effect of Increased Body Weight on Sperm Conventional and Nonconventional Flow Cytometric Sperm Parameters
Authors: La Vignera Sandro , Condorelli Rosita A. , Vicari Enzo , Calogero Aldo E.
Published: December 2011

ABSTRACT: Although with some discrepancy, obese men have been reported to have the worst conventional sperm parameters, but little is known about the effects of body weight on sperm mitochondrial function, chromatin condensation and apoptosis. This study was undertaken to evaluate conventional and nonconventional sperm parameters in nonsmoking overweight or obese men without any other cause known to alter sperm parameters. Fifty overweight, 50 obese, and 50 normal‐weight healthy nonsmoking men were carefully selected. Each man underwent up to 2 sperm analyses and evaluation of mitochondrial membrane potential (MMP), phosphatidylserine (PS) externalization, chromatin compactness, and DNA fragmentation by flow cytometry. Overweight and obese men had significantly lower sperm progressive motility and normal forms than controls. They also had a significantly higher percentage of spermatozoa with low MMP. Obese, but not overweight, men showed a significantly higher percentage of spermatozoa with PS externalization, an early sign of apoptosis, and a lower percentage of viable spermatozoa. A significant increased percentage of spermatozoa with abnormal chromatin compactness was found in both overweight and obese men, whereas only obese men had a significantly higher number of spermatozoa with DNA fragmentation compared with controls. Healthy nonsmoking overweight and obese men have worse conventional and nonconventional sperm parameters than normal‐weight controls. The important role played by these parameters in a couple's fertility suggests a program of body weight loss among the therapeutic repertoire for male infertility.
Maximizing Utility of a Deployable Medical Team from an Academic Medical Center to a Disaster
Authors: Catlett Christina L. , Kirsch Thomas D. , Scheulen James J. , Cole Gai , Kelen Gabor D.
Published: December 2011

Deployable medical teams from academic medical centers (AMCs) can be a valuable adjunct to military and NGO response to disasters and humanitarian crises. In 2009, Johns Hopkins created and trained a scalable, rapidly deployable team of nearly 200 healthcare workers and staff from many disciplines. In 2010 the team deployed groups to the Haiti earthquake which provided valuable lessons regarding utility and implementation of such a team. Partnerships with established response organizations are key. Flexibility of the team's structure allows rapid response to evolving needs of requesting agencies, prevents institutional disruption, and sustains response. Careful management of team logistics is critical to the health, welfare, and security of the team. Complex human resource issues must be anticipated and addressed. Finally, AMCs must be willing and able to absorb some costs associated with the response, even when deploying with well‐funded and highly resourced agencies.
Review of Global Health: Diseases, Programs, Systems and Policies
Authors: Nicogossian Arnauld
Published: December 2011

Global Health: Diseases, Programs, Systems and Policies is an excellent textbook specifically designed for the graduate training programs in global public health.
Diagnosis of intestinal microsporidiosis in pediatric oncology patients in Egypt using modified acid fast trichrome staining versus PCR
Authors: El-Mahallawy Hadir , Zaki Mayssa , El-Arousy Maha , Shalabi Lobna , Mansour Tarek
Published: December 2011

Microsporidia are intracellular opportunistic parasites that cause chronic diarrhea in AIDS patients. Little is known about the prevalence of these pathogens in pediatric cases with cancer and diarrhea. Unidentified causes of chronic diarrhea were previously encountered in pediatric cancer patients at the National Cancer Institute in Egypt. Therefore, this study tried to search for the contribution of microsporidia as a causative agent of diarrhea in this population using acid-fast trichrome stain as a specific staining and the PCR in order to evaluate the staining technique in clinical diagnosis of microsporidia. Between January 2008 and June 2009, 271 diarrheic samples from pediatric patients with cancer were studied. Microsporidia were confirmed in 13 (4.8%) cases by both PCR and staining, and additional 2 samples were positive only by staining. As a negative control, stool samples from 60 diarrheic children without malignant cancer and no microsporidia detection were examined by these two methods. So, it can be concluded that adding a diagnostic test for microsporidia to the clinical laboratory work in hospitals concerned with cancer is essential. Acid fast trichrome staining technique as being nearly efficacious as the PCR, but simpler and less expensive, can replace the molecular techniques for the diagnosis of microsporidia.
Ieredactylus rivuli gen. et sp. nov. (Monogenea, Gyrodactylidae) from Rivulus hartii (Cyprinodontiformes, Rivulidae) in Trinidad
Authors: Schelkle Bettina , Paladini Giuseppe , Shinn Andrew , King Stanley , Johnson Mireille , Oosterhout Cock , Mohammed Ryan , Cable Joanne
Published: December 2011

A new genus and species of Gyrodactylidae, Ieredactylus rivuli gen. et sp. nov. (Platyhelminthes, Monogenea), is described from the skin of Hart’s Rivulus (Rivulus hartii Boulenger), a cyprinodontiform fish collected from streams of the Caroni and Oropouche drainages and the Pitch Lake in Trinidad (prevalence all localities: 16.7–94.6%; mean parasite intensity 1–9 parasites/fish; range 1–34) with the holotype originating from a tributary of the Aripo River. This viviparous monogenean is distinctive from other genera of Gyrodactylidae by its split ventral bar membrane, the shape of its male copulatory organ, the presence of two conical accessory pieces associated with the hamulus root and two differently shaped marginal hook sickles. Its unique rDNA sequence shows the closest ITS2 similarity (70%) to Gyrodactyloides andriaschewii Bychowsky et Poljansky, 1953. The presence of I. rivuli gen. et sp. nov. in the Pitch Lake indicates an adaptation to extreme environmental conditions such as high temperatures and hydrocarbons and adverse pH. Guppies may potentially serve as temporary hosts. The parasite displays distinct behaviours, including a characteristic ‘swimming-like’ movement. The ecology and phylogeny of I. rivuli gen. et sp. nov. is discussed in relation to the diversity of other gyrodactylids in Trinidad.
Loud Silence ‐ Performing the Research Interview, Listening to Black Women’s Stories in the Academy and Beyond
Authors: Jewel Kwakye Chamara
Published: December 2011

This article (originally written as a performance piece) focuses on the lessons learned while conducting qualitative research on Black women in the academy, in particular the lessons learned from Dr Vivi South. Theoretical insights from Critical Race Theory, Queer Theory, Black Feminist Thought, and Narrative Inquiry inform the piece to create an engaging and educational experience that blurs boundaries between traditional modes of academic demonstration, performance, and storytelling. Blurring boundaries between research and practice, theory and method, social science and humanities, community and university creates a space for scholars to rethink the traditional qualitative research interview and the problems of equity in the academy.
RNA Aptamer Evolution: Two Decades of SELEction
Authors: Aquino-Jarquin Guillermo , Toscano-Garibay Julia D.
Published: December 2011

Aptamers are small non-coding RNAs capable of recognizing, with high specificity and affinity, a wide variety of molecules in a manner that resembles antibodies. This class of nucleic acids is the resulting product of applying a well-established screening method known as SELEX. First developed in 1990, the SELEX process has become a powerful tool to select structured oligonucleotides for the recognition of targets, starting with small molecules, going through protein complexes until whole cells. SELEX has also evolved along with new technologies positioning itself as an alternative in the design of a new class of therapeutic agents in modern molecular medicine. This review is an historical follow-up of SELEX method over the two decades since its first appearance.
Measuring Mindfulness: A Rasch Analysis of the Freiburg Mindfulness Inventory
Authors: Sauer Sebastian , Walach Harald , Offenbächer Martin , Lynch Siobhan , Kohls Niko
Published: December 2011

The objective of the study was to assess the psychometric properties of the Freiburg Mindfulness Inventory (FMI-14) using a Rasch model approach in a cross-sectional design. The scale was administered to N = 130 British patients with different psychosomatic conditions. The scale failed to show clear one-factoriality and item 13 did not fit the Rasch model. A two-factorial solution without item 13, however, appeared to fit well. The scale seemed to work equally well in different subgroups such as patients with or without mindfulness practice. However, some limitations of the validity of both the one-factorial and the two-factorial version of the scale were observed. Sizeable floor and ceiling effects limit the diagnostical use of the instrument. In summary, the study demonstrates that the two-factorial version of the FMI-13 shows acceptable approximation to Rasch requirements, but is in need of further improvement. The one-factorial solution did not fit well, and cannot be recommended for further use.
Contrastive Analysis of the Raman Spectra of Polychlorinated Benzene: Hexachlorobenzene and Benzene
Authors: Zhang Xian , Zhou Qin , Huang Yu , Li Zhengcao , Zhang Zhengjun
Published: December 2011

Detection of persistent pollutants such as polychlorinated benzene in environment in trace amounts is challenging, but important. It is more difficult to distinguish homologues and isomers of organic pollutantd when present in trace amounts because of their similar physical and chemical properties. In this work we simulate the Raman spectra of hexachlorobenzene and benzene, and figure out the vibration mode of each main peak. The effect on the Raman spectrum of changing substituents from H to Cl is analyzed to reveal the relations between the Raman spectra of homologues and isomers of polychlorinated benzene, which should be helpful for distinguishing one kind of polychlorinated benzene from its homologues and isomers by surface enhanced Raman scattering.
Direct Power Vector Control for PWM Rectifier Based on LQR Algorithm
Authors: Zhao Zhang Fei , Han Yao Fei , Fan Xiao Hong
Published: December 2011

The mathematical model of three-level PWM rectifier is a multi-input multi-output system of strongly coupled system. In industrial applications, PI controller is adopted as the main regulator of the rectifier, but parameter setting of the PI controller is of great impact on the system. In this paper, we put forward a method of applying LQR algorithm to the controller of the power inner loop, combined with the power mathematical mode of the three-level PWM rectifier. The feasibility and accuracy of the method is verified through the simulation.
Research on the Field of New Type Rotor Structure Permanent Magnet Synchronous Motors
Authors: Si J.K. , Si M. , Feng Hai Chao
Published: December 2011

For each characteristic of surface-mounted permanent magnet motor and built-in permanent magnet motor, this paper presents a new rotor hybrid topologies structure of both the permanent magnet motors. Surface Mounted, built-in and hybrid permanent magnet motor topology model were established using the finite element method for to calculate the static magnetic field three structures of the motor. Comparative analysis of their contour distribution of the pole from the amplitude distribution within the air gap flux density and the flux density of the cloud were done. Air-gap magnetic field distribution in permanent magnet motor proposed new structure is more close to the sine, which is basis on the motor design, operation and so on.
Application of Laser Technology in Evaporation Duct Detection
Authors: Wang Le Dong , Wang Jian Gan , Liu Tao
Published: December 2011

Aiming at how to detect evaporation duct environment accurately in real time, method of detecting atmospheric duct by using laser technique was put forward. From the model of air refractive index of radar band, theoretical relationship between laser scattering properties of aerosol over the ocean and vertical change characteristics of the air humidity was established; judge whether to produce evaporation duct, through using laser to detect the echo signal characteristics of aerosol. The research content is an important complement for methods of atmospheric duct detection, and it can solve several common problems that atmospheric duct forecasting methods needs rigorous measuring conditions, its measurement results delay, it need be estimated by experience and detecting precision is not high, which has higher military application value.
Studies of Computational Model Simulation for Nitrogen Removal Based on ASM1
Authors: Wang Xiao Hua , Yu Zhu Guo , Hu Min , Yu Zeng Liang
Published: December 2011

Activated sludge process is generally applied on biological wastewater treatment. The Activated sludge Model No.1 (ASM1) is a mathematical description of biochemical processes in the reactor for nitrogen and chemical oxygen demand removal. ASM1 model was used to simulate the concentrations of components in leaving water with single-stage completely mixed CSTR (continuously stirred tank reactor) assumed. According to the concentrations of components in entering water of published data, curve simulation results of SNH and SNo show that the nitrogen removal process follows the nitrification-denitrification principle. And the steady-state results of 10 kinds of selected components indicate the simulation of the components concentration of leaving water is relatively accurate,and the nitrogen removal effect is obvious. The simulation system can provide effective technical support for wastewater treatment of actual plant.
A Discussion on Evaluation system of Disaster Prevention and Mitigation Resources in Community
Authors: Yi Liang , Zhang Ya Mei , Huang Wei , Zhu Wei
Published: December 2011

Community is not only the cell of society, but also the basic component of city. To improve urban public disaster prevention and mitigation system must start from the safety construction of community. In the way of introducing the classification of urban community, summarize and analysis the public disaster prevention and mitigation resources in the community, sum up the relationship between public disaster prevention and mitigation resources and common disasters in community, construct evaluation system of community disaster prevention and mitigation resources. Using Analytic Hierarchy Process (AHP) and expert scoring, establish all evaluation indexes weight coefficient. Ultimately, assessing and grading single hazard prevention resources, on which base put forward an algorithm of overall evaluation of disaster prevention and reduction resources.
A Study on Optimized Method of Task Scheduling Oriented Cloud Computing Environment
Authors: Li Dao Guo , Yang Chen , Zhou Zhong Yuan
Published: December 2011

The resources in cloud computing environment are dynamic and different tasks have varied demands for resources. Traditional way for task scheduling cannot effectively schedule the resources according to different QoS requirements. In order to adapt the dynamic task requirements and allocate the resources reasonably, in this paper, we propose seven specific indexes which can be integrated into three indexes called resource cost, load and completion time. At the same time, we establish the model of BP nerve network to evaluate resources by using VC++6.0 development tool and MATLAB simulation software. Experimentation shows that our model can successfully choose the optimal node and provide basis for resources scheduling
Research on Anti-Swing Control of Bridge Crane Based on Fuzzy Control
Authors: Zeng Zhi Hui , Li Liang
Published: December 2011

In recent years, with the development of intelligent control theory, fuzzy control theory has been applied to automatic control of the crane. This paper designs fuzzy anti-swing controller based on the nonlinear mathematical model of bridge crane, and MATLAB/Simulink simulation was carried out. The Simulink experiment proves that location fuzzy controller and angle fuzzy controller show the good anti-swing effect compared with conventional PID controller. The two controllers not only improve response speed times but also improve control accuracy.
WSN Node Localization Algorithm Based on Adaptive Particle Swarm Optimization
Authors: Gao Ying , Zhao W. S. , Jing C. , Ren Wei Zheng
Published: December 2011

In order to overcome shortcomings of existing range-free wireless sensor network (WSN) node localization methods such as huge computation volume and great effect of node density on localization precision, a WSN localization algorithm based on adaptive particle swarm optimization (APSO) was put forward in combination with particle swarm theory and DV-Hop algorithm. This algorithm improved localization precision by more than 20%, and the effect of node density on localization precision was significantly less than DV-Hop algorithm without any addition of hardware facilities and communication load.
Study on Structural Vibration Control by GA Controller Involving Time Delay
Authors: Xue Xiao Min , Sun Qing , Wu Xiao Hong , Zhang Ling
Published: December 2011

Active-control algorithms such as optimal control or impulse control methods generally achieve satisfactory control effectiveness, but it often fails to control dynamic systems with time-delay effectively. In view of this reason, a novel active controller using Genetic Algorithm (GA) is proposed in this paper, which is based on discrete motion equation of multi-freedom degree system with time delay. It can solve such subsistent problems as effective control for a seismically excited structure with an explicit time delay. Meanwhile it is also prone to achieve a desired vibration state in accordance with different control objectives. Finally in order to verify its validity, the GA controller are applied to a three-storey and a eight-storey structures excited by different seismic forces, numerical examples of which are given to prove it capable of providing satisfactory control effect with time delay.
Differential Equation and Analysis of Micro Gyroscope
Authors: Yang Jin Xian , Zhang Ying
Published: December 2011

The differential equation(physical model) is derived based on giving the structure and working principle of some micro-gyroscope. The sense and drive equations are solved for analyzing the basic working laws. According to the form of the solutions the motion form is analyzed, and further the performances are analyzed from the view of range, sensitivity, bandwidth, linearity, zero bias and other indicators, and provided theoretical basis for to improve the gyroscope design.
Temperature Drop Transportation Scheme Optimization of Oil Gathering and Transportation System in Weixing Oilfield
Authors: Wei Li Xin , Pang Ren Shan , Wang Zhi Hua
Published: December 2011

Wax crystallization characteristics, properties of viscosity-temperature and cold rheological properties of crude oil systems with different water cut are studied to analyze the feasibility and advantages of developing temperature drop gathering and transportation in Weixing Oilfield. On the basis of the characteristics of single pipe loop gathering and transportation technological process, an optimization mathematical model for oil gathering and transporting system operation is established, which objective function is the minimum energy consumption of the system. And to solve the model, the hierarchic optimization strategy is adopted. Optimization results of No.1 department and No.2 department showed that the water blending temperature is reduced more than 8°C and the water blending amount is decreased 20%. According to the optimization scheme, the saving on gas and electricity are 7.12×105m3 and 8.92×105kW•h each year.
Application of uCOS-II and LabVIEW in Stirling Engine Fuel Supply Control System
Authors: Liu Jian Xin , Zhao Kai Bin , Du Hui Yong , Li Min , Wang Zhan Cheng
Published: December 2011

The application of uCOS-II and LabVIEW in the development of Stirling Engine fuel supply electric control system was described in this paper. In embedded system, a control program with multilayer structure was designed based on uCOS-II. In upper computer, a LabVIEW virtual instruments IDE was used to achieve features such as remote control, identify series number automatically, display and record signal in real-time. The operation of the whole control system was proved precisely and stability through experiment.
Application of Improved GM(1,1)-Markov Chain Model of Business Order Prediction
Authors: Liu Yi , Lin Wei Guo , Yang Ming Zhong
Published: December 2011

Accurate prediction of the order quantity for the next period is very important for the enterprise to enhance the commercial competitive advantage in a highly competitive business environment. GM(1,1) theory is one of the prediction methods that can be built with a small sample and yet has a strong ability to make short-term predictions. The objective of the paper is to propose a order quantity prediction model which is combined the improved GM(1,1) model and Markov chain model .The effectiveness of the proposed approach to the order prediction is demonstrated using real-world data from a famous company in Liuzhou.The results indicate that the method of prediction is satisfying.
Design Optimization of Rubber Engine-Mount Based on ANSYS
Authors: Qin Hong Yan , Ge Xiao Lan
Published: December 2011

Most domestic automobile factories use test method to design rubber engine-mount, which wasting of time and energy. The design optimization of engine-mount is studied by virtue of ANSYS. In order to satisfying three directions stiffness requires of engine mount, the optimization math model has been established, mount material and geometry parameters have finally been calculated by selecting appropriate arithmetic.
Study on the Electric Detonator Initiation Explosion Suppression System of Gas Pipeline
Authors: An Wei Peng , Wang Hong Xing
Published: December 2011

In view of coal mine fire, this paper studies on a electric detonator Initiation explosion suppression system. The system is mainly composed of composed of UV flame sensor, controller, and explosion suppression device. According to experiments, the system can complete spurting powder in 185ms since detecting the flame signal, and can prevent fire and gas explosion, can reduce the accidents and the loss caused by the accidents greatly. The scheme of explosion suppression system, the experiment condition and procedure are presented in the article.
A New Method of Temperature Measure of Rotary Wheel Disc
Authors: Zhang Yu Xian , Wang Li Fu , Yao Fang
Published: December 2011

First of all, the working principle of infrared thermometer and the structural principle sketch map for measuring the temperature of rotary wheel disc through infrared thermometric technology are briefly introduced from the physics aspect. Secondly, the type of infrared thermometer is selected according to the practical request of low or high temperature measure of rotary wheel disc. Finally, the same point temperature of the turbine wheel disc of an engine is measured through infrared thermometer and thermoelectric couple in the heating status, and the measure results are compared, which dictates that the infrared thermometric system could achieve an upper detection precision and satisfy the practical engineering request.
A Study for the Determination Method with Precise Parameter Based on the DTR100 Transceiver
Authors: Lin Hong Xin , Chen Mu Yi
Published: December 2011

The DTR100 multimode VHF transceiver produced by Italian OTE company is a state-of the-art communication unit. The air traffic control authorities in many areas currently used DTR100 to protect the VHF communication. The results of measured parameters must be a true reflection of the actual working condition of equipment. According to this thought, this paper first analyses the shortcoming of the standard CMS50 radio comprehensive measurement instrument, then introduces two virtues of OTE test box, and the implementation procedure on audio signal 600Ω impedance matching. Moreover, this paper is to improve to technical staff the routine operations and the maintenance, to play the best performance of the equipment, in order to ensure the rapid development of the civil aviation industry in China.
Research of Acoustic Emission Signal De-Noising Based on Lifting Wavelet Packet
Authors: Li X.J. , Deng Z. Q. , Jiang L. L. , Li P , He K. F
Published: December 2011

Aiming at the extraction of failure character signal for early acoustic emission (AE) signals, a method to combine lifting wavelet packet with spectrum zoom technology is developed. Using lifting wavelet packet de-noising method, not only filters the noise signal, but also retains the feature information. After the signals de-noising, combining the envelope demodulation analysis with the spectrum zoom technology, which can effective extract the weak fault characteristic frequency The result of simulated signals and experimental signals shows that the proposed method has better noise reduction with a higher signal noise ratio (SNR) and lower mean square error (MSE), and it can successfully extract the fault characteristic frequency of rotating machinery early AE signals.
A Kind of Design of Satellite Simulation System Based on HLA
Authors: Zhang Bao Ding , Zhang Yan
Published: December 2011

Satellite-based is a very complex system, including of many subsystems involving space, channel, ground, command and so on. The simulation system must rely on the joint co-simulation. Based on HLA (High-Level Architecture) system standard, from the perspective of distributed simulation, a simple satellite design schema was introduced in this article, which can achieve a joint multi-system co-simulation.
Denoising of the Base Vibration Signal Based on EEMD
Authors: Li X.J. , Wang K. , Wang G.B. , Li Q.
Published: December 2011

Vibration signals of rotating machinery on the base are very weak and always buried in noisy noise; the common denoising methods have become powerless. It presents an ensemble empirical mode decomposition method (EEMD) that is used to denoise for the base vibration signal, which not only to overcome the problem of mode mixing, but also to avoid the selection of wavelet basis function and decomposition level of the problem. Experimental results of simulation and measured data show that EEMD method can effectively reduce the base vibration signal noise, which is better than the wavelet and EMD denoising method.
Study on High Anti-Vibration Machine Bed
Authors: Wang Li Xia , Zhang Ye Ming , Shi Yan
Published: December 2011

Vibration is one of the most important factors affecting the accuracy and precision of machine bed. Under the definite structure, different materials and fillings will affect the natural frequency of the machine bed. 3 kinds of candidate materials (HT300.20#.20# & concrete) are selected to build different machine bed. Based on FEM, modal analyses are performed on the different machine beds, 4 sets of natural frequency are sampled on each one. Aiming to better performance in vibration, the machine bed is optimized with higher natural frequency. Through experimental study on the machine bed, it is clear that the optimized machine bed can meet the needs to perform better in machining.
Multi Heterogeneous Information Fusion to Facilitate Fault Diagnosis of Mechatronic Equipments
Authors: Song Li Jun , Hu Zheng
Published: December 2011

This paper describes a strategy for fault diagnosis of mechatronic equipments. The basic idea of information fusion is not only to take into account on-site sensor measurements, but also other factors that could potentially illustrate the essential course of an equipment's evolving faults. For example, these distributed factors might include components information, overhaul test results, usage data, expert experience, and others. Integrating the above produces a more refined diagnosis analysis compared to a local decision based on on-site information alone. However, measurements and other evidential contents were originally meant to serve different goals, i.e. the multi sources might be highly heterogeneous. To allow a unified representation we propose in this paper a formalization modeling based on ontology. Finally, we demonstrate the diagnostic synthesis process in terms of a certain information fusion method, i.e. Bayesian Network.
Study on Microcomputer Inverse Time Over-Current Protection Algorithm of Underground Low-Voltage Power-System
Authors: Zhao Jun Ying , Ma Xing He , Jia Li , Zhang Gen Xian
Published: December 2011

Analysis of general mathematical model and the traditional anti-time algorithm of over-current protection for microcomputer based on the algorithm proposes look-up table and Taylor expansion. To solve the problem of c=0.02 of general anti-time in microcomputer is difficult to implement directly. This paper chooses the Taylor expansion method and selects the general anti-time and thermal over-load (no storage) anti-time for experiment. The experiment proves that the Taylor expansion method can achieve exactly the characteristics of microprocessor-based inverse time.
Dust in Tunnel Influenced to Propagation Characteristic of UHF Electromagnetic Waves
Authors: Cheng Ling Fei , Li Jie , Zhang Li Li
Published: December 2011

All aspects of coal mining will emit large quantities of dust to the tunnel. There are many factors of the floating dust in the tunnel affecting the propagation of electromagnetic waves, such as frequency, consistency and droplet. Combining with the formula in relevant references, this paper uses software to simulate and obtains relevant characteristic curves. Finally, it is clear that the attenuation of propagation increases with the frequency of electromagnetic waves, dust consistency, droplet and temperature also affect the propagation characteristic. Obviously, these factors almost weaken the propagation of electromagnetic waves
Study on Equipment Scheduling of ZPMC Automated Container Terminal Based on Improved PSO
Authors: Tian Y. , Yang B. , Fu H.D. , Yu J. Zhu
Published: December 2011

According to the characteristics of ZPMC automated container terminal operation system, this paper investigates the equipment distribution problem among transportation system, and establishes the scheduling solution of mathematical model for single ship with the shortest total loading/unloading time. Using an improved particle swarm algorithm as the experimental solving method, results show that the proposed model and algorithm are effective and practical.
Transformation of Double Housing Planer and Analysis of its Efficiency Increasing
Authors: Lu Shan , Liu Jing Ping
Published: December 2011

In this paper, some improvement measures are proposed to improve the performance of B2152 double housing planer. The control system is thoroughly transformed. PLC replaces original relay control, all-digital DC speed regulator controls motor of the work table. The control performance is significantly improved, the new control system has the merits of the even velocity,the high machining precision,the wide range,the low noise and saving energy. Milling functions is added and processing range is broadened and efficiency is increased.
The Hardware Design of Handling Manipulator in FMS
Authors: Han Xun Mei
Published: December 2011

With CAXA software I designed the structure of the handling manipulator in the FMS. And focus for the design of the structure, introduced the hardware implementation of robot manipulator with the same characteristics of stepping away from its open-loop position control. The manipulator is mainly used for flexible manufacturing systems in material handling, flexible movement, safe, reliable, easy to adjust and control, simple operation, easy to implement process automation.
Oxygen Enriched and Oxyfuel Combustion - Promising Trends for Low Carbon Future
Authors: Javed M. Tayyeb , Nimmo Bill
Published: December 2011

The escalation of ambient CO2 concentration due excessive use of coal in power generation has put impetus on the development of technologies for utilization of vast and cheap resources available through out the world. Eco-scrub, Oxygen enriched and oxyfuel combustion are among the promising technologies guaranteeing the low carbon future. In our recent investigations, pulverized coal (Russian) was fired in a 20 kW down fired combustion rig under simulated exhaust gas recirculation. The effect of CO2 at burner inlet on the combustion efficiency, flue gas CO2 and NO emission was studied. The test conditions were essentially achieved by replacing the secondary air with a mixture of O2 and CO2 in different proportion. The test conditions do imitate the four key conditions for eco-scrub project. The basic theme under eco-scrub project is to use limited oxygen addition to reduce the volume of flue gas for processing, increase the efficiency of post combustion scrubbing due to higher CO2 levels and reduced the size and cost of post combustion capture. The exhaust gas CO2 was observed to increase linearly with increasing the CO2 at burner inlet. The flue gas concentration for 35% and 45% flue gas recycle was recorded to be 24% and 30% respectively. The NO emission was most of the time under the base line emission of 818 ppm. A maximum of 66% reduction was observed when the burner inlet CO2 was 45% and 21% O2. How ever an increase of 37% was seen when 80% of the secondary air was replaced with a 50%O2-50%CO2 mixture.
Rapid Determination of Pentose and Hexose Sugars in Mixed Sugars by Multiple Linear Regression Calibration Method
Authors: Liu Xiao Chen , Wang Ping , He Ying Long , Kou Yong Lei , Zhang Biao , Dai Gui Fu , Wu Jian
Published: December 2011

This research provides an improvement for the method of Douglas to determine pentose and hexose sugars in mixed sugars. Specific absorption wave of 553 nm for pentose derivatives and 408 nm for hexose derivatives are selected for determination, and the interference from pentose sugar to hexose sugar is corrected with multiple linear regression method. The results show that the interference from pentose sugar is reduced greatly after multiple linear regression calibration; the error is lower than 5.0 %. The experimental results show a satisfying precision and accuracy, with a recovery range from 95.1 % to 106.8%. This method is suitable for simultaneously rapid determination of pentose and hexose sugars in practical application.
IC Assembly Product Inspection Using Image Processing Techniques
Authors: Lee Hsi Chieh , Chang Shao Hsuan
Published: December 2011

In this study, we present an image identification and measurement system for examining and testing the packaged semiconductor specifications. Most semiconductor processes rely on measurement gauges or inspectors to examine the finished product specifications visually. Measurement gauges are costly; inspectors have to be trained professionally and their performance depends on the maturity of their skills, which requires enormous costs, time, and efforts. Therefore, an automatic identification and measurement system will not only reduce costs, but minimize the complexity of measurement, thereby upgrading the effectiveness of manpower significantly. Experiments were conducted using 1657 BMP images with 640 * 480 pixels taken with a semiconductor machine. These images are snapshots randomly taken from of a variety of the 7.2 cm * 4.8 cm Substrate circuit boards each includes 180 pieces of 30 * 6 IC packaged products. Promising results were derived where 1492 out of 1657 product images were successfully detected and measured. In addition to the 90.04% success rate for inspection, the process time is reduced significantly to about 1/6 as compared to human professionals.
Intelligent Human Eye State Identification Based on 2DPCA and Skin Color
Authors: Chen Liang Hwa , Chang Po Lun , Lin Guo Wei , Chang Yen Ching
Published: December 2011

Human eye state identification can be applied not only to monitoring of the drowsiness of a human car driver but also to medical treatment facilitating system for monitoring neonate or stuporous patient. Once the patient awake and open his eyes, human eye state identification system can notify nurses to take care of the patient. In this work, we propose an intelligent human eye state identification algorithm based on 2DPCA and skin color. Adaboost face detection function of OpenCV is first adopted to detect the human faces in color images acquired from camera. Then, we develop a more precise HSV skin color model and use it to eliminate the false alarms in the previous stage. Next, a heuristic segmentation method based on skin color and face geometry is proposed to segment the region of eyes, from which 2DPCA is then adopted to extract the features and identify the opening or closing state of eyes. We study three kinds of 2DPCA, i.e. 2DPCA, T-2DPCA and (2D)2PCA, and compare their performance. Experimental results reveal that our algorithm can achieve over 90% accuracy rate.
The Study of Phenol Wastewater Treatment by Series-Membrane Bioreactor Combine Bio-Reagent
Authors: Liu Yen Chun
Published: December 2011

This present research mainly use bio-reagent process to degradation of medium to high strength phenol. To developing high efficiency process, the hollow fiber series-member bioreactor by Bacillus suctilis to treatment of phenol wastewater. The dependence of phenol degradation rate on biomass was studied, in which reciprocal hollow fiber series-member bioreactor. The result indicate the Bacillus suctilis biomass can efficiency of phenol degradation the initial concentration from 500 mg/L to 0 mg/L in bio reactor 75 hrs, and degradation rate is 6.67 mg phenol/L hr.
Smartphone Remote Lock and Data Wipe System Based on Message Authentication Codes
Authors: Ma Gun Il , Park Kyung Whan , Yi Jeong Hyun , Jin Seung Hun
Published: December 2011

Smartphones provide portability and convenience to users by means of personal information profiles. However, when the phones are lost or stolen, security threats may cause personal information to be exposed. To resolve these problems, the network operator must provide users with remote-locking or wiping-out functions so that malicious users cannot use the mobile devices. In this paper, we propose a smartphone remote lock and data wipe scheme using password-based message authentication. The proposed scheme provides users with a mechanism for verifying the integrity of command messages so that malicious users cannot attack the device by intentionally transmitting lock or wipe commands. In addition, we show that the system is designed to fit in the standard SMS PDU, and we test the performance in terms of memory usage, authentication time, and bandwidth usage by implementing it on Android smartphones.
Applications of Genetic Algorithm and Text Mining on Technology Innovation
Authors: Yoon Byun Gun , Yang Jin Seon
Published: December 2011

The notion of technology innovation is similar to the phenomena of natural evolution because a lot of concepts in technology innovation such as technology trajectory and path dependency was originated the ideas of evolutionary theory. However, existing studies just deal with conceptual relationship between technology evolution and biological evolution without quantitative, detailed analysis. Genetic algorithm is a good approach which can investigate the evolution of promising technology by defining the mutation and selection of technology. Thus, this research aims at proposing a new approach to applying the genetic algorithm to grasp the evolution path of technology. For this, first, the analogy between technology evolution and natural evolution is identified. Second, the morphology of a selected technology is defined by extracting the keyword information from patent documents which are collected from database of USTPO (United State Trade and Patent Office) through text mining. Third, genetic algorithm is applied to analyze the evolutionary pattern of technology and derive the configurations of promising technology with software, describing the cells, mutation and selection of technology.