bluuebunny/crossref_metadata_2025 huggingface dataset:
The impact of obesity on early mortality after coronary artery bypass grafting
Authors: Cemerlic-Adjic Nada , Pavlovic Katica , Jevtic Marija , Velicki Radmila , Kostovski Sasa , Velicki Lazar
Published: January 2014

Background/Aim. It had been suggested that elevated body mass index (BMI) is
a beneficial and preventive factor when it comes to the outcome for patients
undergoing coronary artery bypass grafting (CABG). At the same time, obesity
is strongly associated with coronary artery disease development. The aim of
this study was to determine the significance of the obesity paradox in
patients referred for CABG and to examine if a relationship exists between
obesity and early coronary surgery outcome. Methods. This study comparised
791 patients who had undergone isolated CABG over one year period (year
2010). The average age of patients was 62.33 ? 8.12 years and involved 568
(71.8%) male and 223 (28.2%) female patients, while the mean logistic
EuroSCORE was 3.42%. The patients were categorized into three distinct groups
based on their BMI: I - BMI < 24.9 kg/m2; II - BMI 25-30 kg/m2; III - BMI >
30 kg/m2. Regression analysis was conducted to determine whether BMI was an
independent predictor of early mortality after CABG. Results. The majority of
the cohort could be categorized as overweight (49%) or obese (30%). There was
no association between BMI and gender (p = 0.398). The overall early
mortality was 2.15% (1.85% in the group I, 2.06% in the group II and 2.51% in
the group III; p = 0.869). Univariate analysis showed that obesity cannot be
regarded as an independent risk factor for early mortality following CABG
(odds ratio 1.021, 95% confidence interval 0.910-1.145, p = 0.724). Duration
of in-hospital period following the surgery was comparable within the BMI
groups (p = 0.502). Conclusion. Compared to non-obese patients, overweight
and obese individuals have similar early mortality rate following CABG. This
study can substantiate the presence of obesity paradox only in terms that
elevated BMI patients have comparable outcome with non-obese. Further
research is needed to delineate potential underlying mechanisms that set off
obesity to protective factor for coronary surgery.
Exact boundary controllability of coupled hyperbolic equations
Authors: Avdonin Sergei , Choque Rivero Abdon , Teresa Luz De
Published: January 2014

We study the exact boundary controllability of two coupled one dimensional wave equations with a control acting only in one equation. The problem is transformed into a moment problem. This framework has been used in control theory of distributed parameter systems since the classical works of A.G. Butkovsky, H.O. Fattorini and D.L. Russell in the late 1960s to the early 1970s. We use recent results on the Riesz basis property of exponential divided differences.
Using a graph grammar system in the finite element method
Authors: Strug Barbara , Paszynśka Anna , Paszynśki Maciej , Grabska Ewa
Published: January 2014

The paper presents a system of Composite Graph Grammars (CGGs)modelling adaptive two dimensional hp Finite Element Method (hp-FEM) algorithms with rectangular finite elements. A computational mesh is represented by a composite graph. The operations performed over the mesh are defined by the graph grammar rules. The CGG system contains different graph grammars defining different kinds of rules of mesh transformations. These grammars allow one to generate the initial mesh, assign values to element nodes and perform h- and p-adaptations. The CGG system is illustrated with an example from the domain of geophysics.
POSSIBILITIES OF INFLUENCING THE RESULTS ON PERFORMANCE AND HEALTH OF CALVES WITH BIOPOLYM PREPARAT
Authors: Čermák Bohuslav , Hnisová Jana , Petrášková Eva , Pejchová Kamila , Šoch Miloslav , Vostoupal Bohuslav , Tucu Dumitru
Published: January 2014

The two farms were conducted experiments with added preparation Biopolym FZT for rearing calves. Additions were applied in the operating conditions where the first farm was gradually calves continuously supplemented to the barn. On the other farm was loading section, and after three months, the calves are picked once. Experimental groups were added preparation Biopolym FZT to supply water for the entire group. The first attempt to farm the results were not significant due to the occurrence of diarrheal disease. In the second company in the experimental group were found higher weight + 0,141kg/day gains than control groups. Between the detected blood parameters in the control and experimental groups was not statistically significant. The results were within the reference range. The tendency Impairment of copper in the blood heifers are similar within the region and in the future could have an adverse effect on reproductive performance. On the data logger ammonia and carbon dioxide, located in the barn were no significant differences in measured values. Values of N-compounds in the feces of calves in both were statistically significant. There was a certain tendency in reducing the average values of N-compounds in experimental groups of calves.
EVALUATION MICROCLIMATE IN THE STABLE NATIONAL STUD FARM IN KLADRUBY NAD LABEM
Authors: Kalíšek Jan , Knížková Ivana , Ondr Pavel , Šoch Miloslav
Published: January 2014

The measurement of temperature, humidity and dew point in the selected stable, and for the comparison also in the courtyard, took place continuously from 1.4.2011 to 31.3.2012. Because of its technical demands, the measurement of stable gases took place roughly 1x in a month and that in the 24 h cycle. This work should answer the questions, how much is the stable microclimate dependent on the ambient environment - current weather, whether there are suitable conditions in the stables of National Stud-Farm in Kladruby nad Labem with respect to the welfare of horses, how much is the concentration of stable gases in enclosed areas according to the presence of horses changing and, possibly, how much affects the horse breeding the environment.
Gaussian Integers
Authors: Futa Yuichi , Okazaki Hiroyuki , Mizushima Daichi , Shidama Yasunari
Published: January 2014

Gaussian integer is one of basic algebraic integers. In this article we formalize some definitions about Gaussian integers [27]. We also formalize ring (called Gaussian integer ring), Z-module and Z-algebra generated by Gaussian integer mentioned above. Moreover, we formalize some definitions about Gaussian rational numbers and Gaussian rational number field. Then we prove that the Gaussian rational number field and a quotient field of the Gaussian integer ring are isomorphic.
Effect of manipulated sex ratio on insemination of the red mason bee Osmia bicornis L. under net cage conditions
Authors: Fliszkiewicz Monika , Langowska Aleksandra , Tryjanowski Piotr
Published: January 2014

The red mason bee Osmia bicornis L. (Hymenoptera: Megachilidae) is a solitary gregarious species that is known to be a good pollinator of pear, apple, and several other Rosaceae fruit plants. Mainly females are active in plant pollination, and therefore they are of strong interest to farmers. As natural populations are usually male biased, here we studied the possibility of rearing a female-biased population of Osmia bicornis by examining the effects of sex ratio changes on female survival, insemination rate, and sperm count in the spermatheca. Using bees that had completed their winter diapause and were maintained in flying cages, we created three groups with different male:female sex ratios: 1:1, 1:2, and 1:3. The 1:3 sex-ratio group exhibited the best survival of females, but the lowest spermathecae sperm count. The insemination rate did not differ between groups. Our results indicate that-at least among bees housed in isolator cages for plant breeding- skewing the sex ratio towards more females does not affect bee survival, and efficient insemination can be expected with twice as many females as males.
Genetic characterization of the cyprian honey bee (Apis mellifera cypria) based on microsatell ites and mitochondrial DNA polymorphisms
Authors: Papachristoforou Alexandros , Rortais Agnès , Bouga Maria , Arnold Gérard , Garnery Lionel
Published: January 2014

Honey bee populations from the island of Cyprus were analyzed using microsatellite and mitochondrial DNA markers. A total of 268 colonies were sampled in Cyprus, at six different locations-Kyrenia, Katydata, Flassou, Alabra, Troulloi, and Alassa-covering a wide area of the island. Results showed that the Cyprian honey bee Apis mellifera cypria could be distinguished from other Apis mellifera subspecies based on a „double pattern“ of mitochondrial DNA belonging to the C1 lineage and microsatellite DNA belonging to the O lineage. All populations were homogeneous, except the population from Kyrenia, probably due to the introduction of queens or colonies belonging to the C2, C6, and M7 lineages.
SELECTION OF SPECIFIC SINGLE CHAIN VARIABLE FRAGMENTS (SCFV) AGAINST POLYMYXA BETAE FROM PHAGE DISPLAY LIBRARIES
Authors: Safarnejad Mohammad Reza , Safarpour Hossein , Shahryari Fatemeh , Basirat Marzieh , Tabatabaei Meisam , Kordenaeej Alaeddin , Naji Amir Mohammad , Kakouienejad Mojdeh
Published: January 2014

Sugar beet is one of the most important industrial crops in Iran. For the last two decades it has been mainly affected by a destructive virus, beet necrotic yellow vein virus (BNYVV). The Polymyxa betae is the only natural transmitting agent of the disease among the plants. Developing accurate diagnostic methods may have a major impact on the rising of resistant germplasms. In the present study, specific monoclonal recombinant antibodies in the form of single chain variable fragments (scFv) were obtained from naïve phage display libraries. The fungus specific glutathione-S-transferase (GST) protein was chosen as an antigen for developing antibodies and diagnostic purposes. To generate specific scFv, screening of Tomlinson phage display libraries was performed by applying both recombinant and native fungal GST. Using the recombinant GST in the panning process resulted in the isolation of an antibody only bound to recombinant GST but it failed to detect native GST in the infected plants. Alternatively, the process of panning was carried out by applying native fungal GST trapped to immunotubes through specific polyclonal antibody intermediate. The recent approach resulted in the selection of a specific scFv binding to native GST which was able to detect the presence of the fungi within infected plants. To the best of our knowledge, this is the first report on the generation of recombinant antibodies against Polymyxa betae, fungal vector of sugar beet rhizomania disease.
Calculation of the critical thickness for one-speed neutrons in a reflected slab with backward and forward scattering using modified T
N method
Authors: Öztürk H. , Bülbül A.
Published: January 2014

The reflected critical slab problem is investigated in one-speed neutron transport theory for reflecting boundary conditions. The neutron angular flux is expanded in a series of first kind Chebyshev polynomials and isotropic, backward and forward scattering kernel is used as the scattering function. The critical sizes for one-speed neutrons in a uniform finite slab surrounded by identical reflectors from both sides are calculated for various values of the collision parameter, backward and forward scattering and reflection coefficient. Numerical values calculated for the critical slab are presented in the tables and are found to be in good agreement with literature values.
Calculation of the neutronic behavior of minor actinides burning in a thermal research reactor using the MCNPX 2.6 code
Authors: Feghhi S. A. H. , Gholamzadeh Z. , Alipoor Z. , Joharifard M. , Tenreiro C.
Published: January 2014

Due to the reduction of accessible uranium resources as well as waste proliferation issues, researchers are looking for more suitable approaches, such as replacement of uranium as breeding fuels. Among the practical fuel matrixes, the thorium fuel matrix is favored for its naturally abundant and minor actinide proliferation resistance. Monte Carlo computational methods are widely used to successfully simulate neutronic behavior of nuclear reactors. Calculation of some neutronic and dynamic parameters of a 37-assembly simulated research reactor consisting of thorium oxide fuel and 1 minor actinide pin have been carried out in the present work using the MCNPX 2.6 code.
An Integrated Modeling Approach to Evaluate and Optimize Data Center Sustainability, Dependability and Cost
Authors: Callou Gustavo , Ferreira João , Maciel Paulo , Tutsch Dietmar , Souza Rafael
Published: January 2014

Data centers have evolved dramatically in recent years, due to the advent of social networking services, e-commerce and cloud computing. The conflicting requirements are the high availability levels demanded against the low sustainability impact and cost values. The approaches that evaluate and optimize these requirements are essential to support designers of data center architectures. Our work aims to propose an integrated approach to estimate and optimize these issues with the support of the developed environment, Mercury. Mercury is a tool for dependability, performance and energy flow evaluation. The tool supports reliability block diagrams (RBD), stochastic Petri nets (SPNs), continuous-time Markov chains (CTMC) and energy flow (EFM) models. The EFM verifies the energy flow on data center architectures, taking into account the energy efficiency and power capacity that each device can provide (assuming power systems) or extract (considering cooling components). The EFM also estimates the sustainability impact and cost issues of data center architectures. Additionally, a methodology is also considered to support the modeling, evaluation and optimization processes. Two case studies are presented to illustrate the adopted methodology on data center power systems.
Common Virulence Factors and Tissue Targets of Entomopathogenic Bacteria for Biological Control of Lepidopteran Pests
Authors: Castagnola Anaïs , Stock S.
Published: January 2014

This review focuses on common insecticidal virulence factors from entomopathogenic bacteria with special emphasis on two insect pathogenic bacteria Photorhabdus (Proteobacteria: Enterobacteriaceae) and Bacillus (Firmicutes: Bacillaceae). Insect pathogenic bacteria of diverse taxonomic groups and phylogenetic origin have been shown to have striking similarities in the virulence factors they produce. It has been suggested that the detection of phage elements surrounding toxin genes, horizontal and lateral gene transfer events, and plasmid shuffling occurrences may be some of the reasons that virulence factor genes have so many analogs throughout the bacterial kingdom. Comparison of virulence factors of Photorhabdus, and Bacillus, two bacteria with dissimilar life styles opens the possibility of re-examining newly discovered toxins for novel tissue targets. For example, nematodes residing in the hemolymph may release bacteria with virulence factors targeting neurons or neuromuscular junctions. The first section of this review focuses on toxins and their context in agriculture. The second describes the mode of action of toxins from common entomopathogens and the third draws comparisons between Gram positive and Gram negative bacteria. The fourth section reviews the implications of the nervous system in biocontrol.
Design and Implementation of a Randomized Controlled Trial of Genomic Counseling for Patients with Chronic Disease
Authors: Sweet Kevin , Gordon Erynn , Sturm Amy , Schmidlen Tara , Manickam Kandamurugu , Toland Amanda , Keller Margaret , Stack Catharine , García-España J. Felipe , Bellafante Mark , Tayal Neeraj , Embi Peter , Binkley Philip , Hershberger Ray , Sadee Wolfgang , Christman Michael , Marsh Clay
Published: January 2014

We describe the development and implementation of a randomized controlled trial to investigate the impact of genomic counseling on a cohort of patients with heart failure (HF) or hypertension (HTN), managed at a large academic medical center, the Ohio State University Wexner Medical Center (OSUWMC). Our study is built upon the existing Coriell Personalized Medicine Collaborative (CPMC®). OSUWMC patient participants with chronic disease (CD) receive eight actionable complex disease and one pharmacogenomic test report through the CPMC® web portal. Participants are randomized to either the in-person post-test genomic counseling—active arm, versus web-based only return of results—control arm. Study-specific surveys measure: (1) change in risk perception; (2) knowledge retention; (3) perceived personal control; (4) health behavior change; and, for the active arm (5), overall satisfaction with genomic counseling. This ongoing partnership has spurred creation of both infrastructure and procedures necessary for the implementation of genomics and genomic counseling in clinical care and clinical research. This included creation of a comprehensive informed consent document and processes for prospective return of actionable results for multiple complex diseases and pharmacogenomics (PGx) through a web portal, and integration of genomic data files and clinical decision support into an EPIC-based electronic medical record. We present this partnership, the infrastructure, genomic counseling approach, and the challenges that arose in the design and conduct of this ongoing trial to inform subsequent collaborative efforts and best genomic counseling practices.
Inhibitory Effect of Dihydroaustrasulfone Alcohol on the Migration of Human Non-Small Cell Lung Carcinoma A549 Cells and the Antitumor Effect on a Lewis Lung Carcinoma-Bearing Tumor Model in C57BL/6J Mice
Authors: Chen Shuo-Chueh , Chien Yi-Chung , Pan Chun-Hsu , Sheu Jyh-Horng , Chen Chih-Yi , Wu Chieh-Hsi
Published: January 2014

There are many major causes of cancer death, including metastasis of cancer. Dihydroaustrasulfone alcohol, which is isolated from marine coral, has shown antioxidant activity, but has not been reported to have an anti-cancer effect. We first discovered that dihydroaustrasulfone alcohol provided a concentration-dependent inhibitory effect on the migration and motility of human non-small cell lung carcinoma (NSCLC) A549 cells by trans-well and wound healing assays. The results of a zymography assay and Western blot showed that dihydroaustrasulfone alcohol suppressed the activities and protein expression of matrix metalloproteinase (MMP)-2 and MMP-9. Further investigation revealed that dihydroaustrasulfone alcohol suppressed the phosphorylation of ERK1/2, p38, and JNK1/2. Dihydroaustrasulfone alcohol also suppressed the expression of PI3K and the phosphorylation of Akt. Furthermore, dihydroaustrasulfone alcohol markedly inhibited tumor growth in Lewis lung cancer (LLC)-bearing mice. We concluded that dihydroaustrasulfone alcohol is a new pure compound with anti-migration and anti-tumor growth activity in lung cancer and might be applied to clinical treatment in the future.
Pharmacist’s Use of Screening Tools to Estimate Risk of CVD: A Review of the Literature
Authors: O'Donovan Dónal , Byrne Stephen , Sahm Laura
Published: January 2014

To review pharmacist-led screening programmes for estimation of cardiovascular disease (CVD) risk using validated screening tools, studies were identified using a search of the following electronic databases: PubMed, EMBASE, Web of Knowledge and the Cochrane library databases. Each database was searched from inception to December 2011. The search terms used were: “cardiovascular disease”, “screening”, “risk estimation”, “pharmacist” and “pharmacy”. Titles, abstracts and full manuscripts were screened to determine eligibility. Inclusion criteria were: (i) Pharmacist-led CVD screening; and (ii) Use of validated screening tool or tools for CVD. From each included study information was collected on the following: Study author; year of publication; setting; inclusion and exclusion criteria; tools used and outcomes measured. Articles were grouped and independently verified to ensure they met with the inclusion criteria. Over 7,000 citations were found. Twenty full-length articles were retrieved for analysis, of which twelve were excluded, as they did not meet the inclusion criteria. The eight remaining articles were included in this literature review. Whilst pharmacists undertake screening in their own practice, this approach will only go so far. To have a population-health impact, pharmacists should be involved in proactive screening in a variety of settings.
NodePM: A Remote Monitoring Alert System for Energy Consumption Using Probabilistic Techniques
Authors: Filho Geraldo , Ueyama Jó , Villas Leandro , Pinto Alex , Gonçalves Vinícius , Pessin Gustavo , Pazzi Richard , Braun Torsten
Published: January 2014

In this paper, we propose an intelligent method, named the Novelty Detection Power Meter (NodePM), to detect novelties in electronic equipment monitored by a smart grid. Considering the entropy of each device monitored, which is calculated based on a Markov chain model, the proposed method identifies novelties through a machine learning algorithm. To this end, the NodePM is integrated into a platform for the remote monitoring of energy consumption, which consists of a wireless sensors network (WSN). It thus should be stressed that the experiments were conducted in real environments different from many related works, which are evaluated in simulated environments. In this sense, the results show that the NodePM reduces by 13.7% the power consumption of the equipment we monitored. In addition, the NodePM provides better efficiency to detect novelties when compared to an approach from the literature, surpassing it in different scenarios in all evaluations that were carried out.
Export-Oriented Horticultural Production in Laikipia, Kenya: Assessing the Implications for Rural Livelihoods
Authors: Ulrich Anne
Published: January 2014

Smallholders in the global South are confronted with new opportunities and risks emanating from globalized markets of agricultural goods. In Kenya, large-scale export-oriented horticulture farms, cultivating fruits, flowers and vegetables, were by and large established in the 1980s. In Laikipia County, the farms have grown to be the most important employers tying the region into global markets. The growth of the industry has direct as well as indirect impacts on local livelihoods. Based on qualitative data gathered from 55 interviews held with experts, local households and employees, the assessment shows a range of economic, social and environmental opportunities as well as constraints. Three major shortcomings are identified, the first being increasing river water abstractions and related water scarcity, second the call for living wages and social security, and third constraints smallholders face as out-growers. Addressing these issues can contribute to a more sustainable development in the region.
Prevalence of Carrying Multiple Pillion Riders on the Route to School
Authors: Paiman Noor Faradila , Syazwan Solah Mohd , Aqbal Hafeez Ariffin , Mohd Isa Mohd Hafzi , Mohd Khairudin Rahman , Jawi Zulhaidi Mohd , Azhar Hamzan , Abu Kassim Khairil Anwar , Mohamed Norlen
Published: January 2014

A cross-sectional observation surveys was carried out among 6 to 12 years old child pillion riders travelling to and from schools by motorcycle. The study focused on prevalence of multiple child pillion riders, to determine the relationship between child pillion riders safety helmet compliance and their seating position and foot peg utilization. A total of 701 riders and 913 school children were observed. Riders safety helmet use rate was significantly higher (66.8%) than as compared to child pillion rider helmet use (14.7%) with OR=11.7 (95%CI 9.2-14.9). It was observed that 29.1% riders were carrying more than one child pillion riders; with female rider are more likely to carry more than one pillion rider (OR=1.6, 95%CI 1.1-2.2). Observation on utilization of foot peg showed that back motorcycle pillion rider (BP) were more likely to use foot peg as compared to middle motorcycle pillion rider (MP) (OR=11.7, 95%CI 7.8, 17.5). Safety helmet use by child pillion rider on the route to school is generally low. Furthermore, there was a significant difference for child pillion rider safety helmet use compliance according to seating position. Children who were seated in the middle are less likely to use safety helmet. Rear child pillion riders had higher chance to utilize motorcycle foot peg. To increase the prevalence of helmet use and safety of children, there is a need for public awareness campaigns on the safety benefits of safety helmets use among school children and ergonomically designed motorcycle while riding.
Functions of Public Service in the Sustainable Development of Regional Economy: A Case Study of Tianjin
Authors: Liang Xue Ping
Published: January 2014

In the development process of regional economy, the adequate supply of public services can create a good environment, promote endogenous growth and improve the government's governance ability in public affairs. This paper mainly analyzes the function of public services in regional economy by taking Tianjin as an example.
The Temperature Field Analysis about the Thermal Assembly Process of the Roller Sleeve of HFCG160 Roller Press
Authors: Bao Jia Han , Wang Yong , Cai Jie
Published: January 2014

This paper used the finite element software ANSYS to simulate the thermal assembly process of the roller sleeve of the HFCG160 roller press, and study the change of the temperature field. And then, comparing the simulation temperature with the test temperature, the results show that the simulation temperature is basically consistent with the test temperature, while there are slight biases on the individual points within a certain period of time. The main reason for biases between the simulation temperature and the test temperature is that the convective heat transfer coefficient is average during the simulation, which ignoring the convective heat transfer coefficient decreases with the decreasing of temperature.
Based on Vibration and Improved GRNN Identify Eggshell Crack
Authors: Yang Jian , Pan He , Peng Zhan Wu , Li Xiu Ying
Published: January 2014

When knocking at crack eggs and nondestructive egg, a flexible piezoelectric film sensor shall be adopted to obtain frequency domain characteristic signals. Consequently, the frequency domain characteristic curves of nondestructive eggs show obvious main frequency domain values, while those of crack eggs show multiple and irregular peak values. In accordance with equal interval frequencies, the first 16 maximum and minimum amplitude values are selected orderly as input vector training Generalized regression neural network .Its Predicted output vector is the egg cracks.. In order to improve prediction accuracy, smooth factor of GRNN neural network is calculated by Particle Swarm Optimization. The experimental result showed that accurate prediction rate of GRNN is up to 94%.
Characteristics of Microstructure and Microhardness of Friction Stir Welded Joints for AZ31 Magnesium Alloy
Authors: Wang Shan Lin , Zhang Heng Yv , Li Xing
Published: January 2014

The joints of magnesium alloy plate with 4 mm thickness was successfully welded by friction stir welding, and the characteristics in microstructure and microhardness of joints after heat treatment were investigated. The results indicate that the tensile strength of as welded joint exceeds 220 MPa, nearly 83% strength of basic metals. During heat treatment, the grains in nugget zone grow gradually, while the grain recrystallization was occurred in heat affected zone and basic metal zone when the temperature is 150°C. As the temperature increases continuously, the grains will grow obviously. The average microhardness of joint will increase and reaches a maximum of 73 Hv at 250°C, and then will decrease sharply with increase of heat treatment temperature.
A Wind Farm Capacity Credibility Calculation Method Based on Parabola
Authors: Gao Zhong Xu , Mao An Jia , Chen De Zhi , Song Yun Ting
Published: January 2014

The capacity credibility of a wind farm is the basic index to evaluate the value of its power generation capacity. As an important reference for the wind farm planning and site selection, calculation of wind farm capacity credibility is significant. Based on a sequential Monte Carlo simulation approach, this paper proposes a parabola calculation method for the wind farm capacity credibility. The method first uses an autoregressive moving average (ARMA) time series approach to simulate the hourly wind speeds, and then set up the reliability model of the wind energy conversion system (WECS). Finally, the parabolic method is used to calculate the effective load-carrying capacity (ELCC), which is the most important part of the capacity credibility of the wind farm. As a testing scenario, the IEEE-RTS79 test system is used to verify the method, and the difference of capacity credibility under different reliability indices is also analyzed.
Evaluation and Empirical Analysis of China’s Regional “Integration of Informationization and Industrialization”
Authors: Liu Li Qiang , Feng Jun Wen
Published: January 2014

In view of the full integration of informationization and industrialization in China, ,an evaluation model of Chinas Regional Integration of Informationization and Industrialization is built on the basis of the summary of the findings at home and abroad, thus to get a general idea about Chinas Integration of Informationization and Industrialization in a quantitative way. In terms of the popularization level of the social informatization, the development level of the information industry, the level of industrialization and the level of industrial integration, 27 indicators are defined, and the evaluation system for Chinas regional integration of informationization and industrialization is built. On the basis of the actual data of Chinas regional integration of informationization and industrialization in 2011, the principal component analysis method is adopted to evaluate the integration of informationization and industrialization in different regions, analyze the equilibrium degree between the fractal dimensions of the integration, discover its structural differences, and propose specific policy recommendations according to the actual conditions of different regions.
Analysis of Relationship between Lateral Stability and Dynamic Characteristic of Continuous Welded Rail Track
Authors: An Ran , Luo Yan Yun , Lee Li
Published: January 2014

The axial buckling threshold force of continuous welded rail (CWR) depends on lateral stability of railway track. The conventional CWR buckling models are based on track static parameters and behavior. In this paper, a dynamic finite element model for investigating the relationship between the rail nature frequencies and the critical buckling axial force of CWR track is presented. This model consists of rails, sleepers and foundation, and covers factors of interest such as track curvature, supporting distance between adjoining sleepers. With the new dynamic model, numerical computations and analyses are performed. The correlations among the critical axial force of rail, the lateral stability and the nature frequencies of CWR track are studied. The computational results of the new dynamic model show a great agreement with the field testing results.
Mechanical Model and Movement Analysis of Self-Adjusting Bolt in Converter
Authors: Yin Qiang , Li Gong Fa
Published: January 2014

The movement model of self-adjusting bolt is built in this paper, then the kinematical and mechanical analysis is taken to determine the movement of bolt under the converters working condition.Via the mechanical model analysis of self-adjusting bolts, the load applied to the self-adjusting bolt support including the static weight load of converter and steel liquid, the tilting torque, the dynamic load produced by frequent startup, brake, impact, and the boiling of steel liquid is calculated to determine the distribution of load forcing on the three groups of the self-adjusting bolt. According to the results of stress analysis, the bolt facing tapping hole is the most dangerous when converter tilts 63°. The maximum torque is 281.5101tm.
CMRR Analysis of the 3 Op-Amp Instrumentation Amplifier with Noise
Authors: Wu Tie Feng , Zhao Zhi Chao , Dai De Wei , Piao Shun Ji , Li Jing
Published: January 2014

This paper researches the common mode rejection ratio (CMRR) of 3 op-amp instrumentation amplifier of amplifying weak signal and presents a new calculation modal considering noise, non-ideal amplifiers, matched resistor and application restricted by the factors of affecting CMRR. At last, a instrumentation amplifier was designed and built and its measured and computed results of modal are compared. The results show that this modal presented enhances calculating precision and extends application range of instrumentation amplifier. It is valid and reasonable.
Research and Applications on Heat Transfer Enhancement of Two Types of Heat Exchangers
Authors: Zhao Hui Yuan , Zhu Xiao Qin , Hu Jin , Bie Yu , Ni Hai Yang , Li Ting Zhou
Published: January 2014

In this paper, a review on the research progress and applications for heat transfer enhancement of two types of heat exchangers was made, and their heat transfer enhancement methods were compared and analyzed, which could provide a theoretical basis for the structure design and reasonable selection of different heat exchangers, simultaneously the trend of the further research was prospected in order to improve heat transfer effect of heat exchangers.
Research on the New Combined Type Crusher Hammer
Authors: Zhao Xing Ming , Zhou Hai Tao , Rong Shou Fan , Yang Bao Guo , Li Chun Hong
Published: January 2014

To solve the problems of installed trival, resource waste, hammerhead falling off and improve the poor abrasion resistance of hammer handle under the crusher hammers working condition, the new combined type crusher hammers were designed by connecting separated hammer handle and separated hammer head. When hammer head were worn badly, we just replaced hammer head and don't have to remove the shaft rod. This design can save a lot of time and labor force, improve production efficiency and we can save a lot of resources by reusing the hammer handle; At the same time, hammer tip was casted with liquid-liquid bimetal composite casting technology of casting, under the premise of guaranteeing the wear-resisting, which can also ensure that the impact toughness of the joint. Validated by actual working condition, hammer handle can be replaced at least five times for this design of hammer, and each group has 24 hammer heads, every 5 sets of hammer heads can save 1200 kg metallic materials, 1800 KWh and CO2 emissions dropped by 1795 kg.
Design and Experimental Study of a Mower Conditioner Drive System
Authors: Luo Ya Lan , Zhao Chun Hua
Published: January 2014

According to the forage of mountain region harvesting requirements, a transmission of montanic mower conditioner was designed. The drive system was combined with automatic tension sprocket and double chain wheel of upper and lower crushers, firstly, to realize the automatic regulation and relative motion of two flattening roller, secondly, the power was passed to reel device and achieved forage feeding function; the off-center slider crank mechanism drove the horizontal header to realize the grass cutting function. Through the theoretical analysis and experimental study of the system working performance, applied comprehensive scoring method to obtain the optimal combination of working parameters: the cutting ration was3, the press roller circumferential speed was 4.5m/s, the reel speed ratio was 3. Measured with the optimal combination of operational parameters, the results showed that: the working stubble was 40mm, the recutting rate was 0.8%, the flattening ratio was 42.8% and the crushed grass loss rate was 2.3%, which could meet the demand of forage harvest operation.
The Establishment of Electricity Price Model Based on User Satisfaction and Power Supply Enterprise Return
Authors: Li Bing Qing , Liang Xue , Yang Dong Sheng , Hu Bo , Li Dan
Published: January 2014

With the improvement of the power users requirements for power quality, traditional electricity pricing model cannot meet the needs of the users. At first, a concept of power user satisfaction was proposed, and the mathematical model of different categories of power user satisfaction was established. On the basis of comprehensive analysis of various kinds of power load characteristics, the mathematical model of the relationship between power and electricity price was given, and the simulation analysis shows that in the case of certain electricity price, power supply returns will be increased considering user satisfaction. Finally, an electricity price design mathematical model considering both user satisfaction and power supply enterprise's returns was established, and the model will provide certain theoretical basis to formulate a reasonable electricity price.
Aviation Human Factors Accident Causation Model Based on Structure Entropy
Authors: Wu Ya Rong , Duanmu Jing Shun , Xu Ji Hui , Ren Xiao Hong
Published: January 2014

In order to study the traditional accident causation theories and models about human factors in flight accident. A new aviation accident causation model based on the improved HFACS is constructed. Through using system aging, quality and Structure Entropy formula the degree of order of model 1 and model 2 are evaluated, and by selecting aging entropy, maximum timeliness entropy, timeliness, quality entropy and maximum quality entropy the structure of the degree of order is calculated to verify structure in the right to re-bias stability under the conditions. It is shown that the model 2's structure entropy are lower, aging and model quality are also larger, so the improved model is better structural model.
An Method to Urban Road Travel Time Estimation through ITS Data Fusion Based on D-S Evidential Theory
Authors: Xia Jing Xin , Zhang Wei Hua , Ma Dang Sheng
Published: January 2014

Focused on the current situations of the multiple traffic data collection efforts for urban roads, the link travel time estimation methods are respectively proposed based on two traffic data resources as station traffic data collected by microwave detectors and the vehicle plate data collected by the video vehicle plate identification system. Based on this, the link travel time estimation approach by fusing two data resources is presented using the Dempster-Shafer evidence reasoning theory, in which the probability distribution function is firstly used to construct the evidence function for each data resource, and then the weights for the two different data resources are estimated for link travel time fusion estimation through the combination rule of Dempster-Shafer evidence reasoning theory. Using the true link travel time collected by the test vehicles, the performance of the proposed method for link travel time estimation is evaluated. Evaluation results show that the proposed method can significantly improve the link travel time estimation accuracy when compared to the methods that merely uses single data resource.
Effect of Y2O3 Content on the Properties of Alumina-Based Ceramic Cores
Authors: Wang Rong Feng , Zhang De Ming , Zhuang Ou Yang , Xu Hai Lin , Huang Wen Sheng , Xie Da Ming
Published: January 2014

A series of alumina cores with different content of yttria were prepared by sintered at 1450°C. The flexural strength at room temperature, high temperature deformation and shrinkage rate of alumina based ceramic core were determined. the phase evolution and microstructure were studied by scanning electron microscopy (SEM) ,X-ray diffraction (XRD).The optimal yttria content on the combined properties of these cores were discussed. The results explained that The Al2O3 particles reacted with some Y2O3 particles to form a polycrystalline composition 3Y2O3·5Al2O3 (YAG), which activated the lattice and promoted sintering. Most of yttria, however, were concentrated in the ceramic grain boundaries, playing a role in improving grain refinement and microstructure; the cores achieved the best comprehensive performance when the content of yttria was 10%.
Research on Complex Resistance Characteristics of the Conductive Rubber Filled by Carbon Black
Authors: Li Bin , Fu Chao Yang , Zhang Xue Yong
Published: January 2014

Conduction characteristics of carbon black filled conductive rubber prepared in laboratory were investigated. The relationship of current and frequency under the sinusoidal AC excitation was analyzed and a new conductive chain model and equivalent circuit were established. Influences of the different amount of carbon black filled and pressure on frequency range were also studied. The results showed that the conductive rubber filled by carbon black had complex resistance characteristics. Resistance frequency domain of conductive rubber relatively increased with the increasing of the carbon black filler and pressure; while the capacitive reactance frequency domain of conductive rubber relatively decreased with the increasing of pressure.
Freeze-Thaw Resistance of Concrete Modified by Rice Hull Ash and Gangue
Authors: Han Jing Yun , Zhang Liang Liang , Zhang Hai Yang
Published: January 2014

Currently, most rice hull is piled up or burned naturally, resulting in many environmental problems. It is a potentially good way to incinerate specially rice hull into the ash that is used as concrete admixture. The research work was done and results indicate that the compressive strength of the concrete with addition of 1%, 2% and 3% of rice hull ash increased by 6.8%16.7% and 15.1% respectively compared with control samples. And the compound addition of rice hull ash and gangue not only improved the mechanical and anti-freeze-thaw properties of concrete, but also decreased the cost of concrete production.
On the Stability and Control Technology of the Side Slope of the Tunnel Entrance
Authors: Du Xiao Wei , Gao Yong Tao
Published: January 2014

In our country, the progress lag even casualties caused by landslide or collapse of tunnel portal occurs from time to time, so how to make scientific analysis on the stability of side slope of the tunnel entrance and put forward effective control technology are important problems urgent to solve in tunnel engineering. This paper mainly analyzes the influencing factors of stability of side slope of the tunnel entrance and failure mode of side slope and puts forward the corresponding control measures to ensure the safety of the tunnel construction.
The Application of Grassland Aboveground Biomass Estimating Model in Karst Mountainous Area
Authors: Chen Quan , Zhou Zhong Fa
Published: January 2014

In typical Karst mountain area, the complex and broken ground surface leads to serious mixed pixel phenomenon. In this paper, with Tuchang Town as the research area, we utilized linear spectral mixture analysis to estimate biomass of grassland from Landsat ETM+ image. The analysis indicated that the grassland component which extracted based on the linear mixed model has obvious lineal correlation with the field measured data. The grassland aboveground biomass estimation model can be expressed by the equation: Y=2451.158X-280.461, (R2=0.8012). The result of precision validation shows that the overall accuracy is above 85%. The grassland aboveground biomass estimation model which based on linear spectral mixture analysis is feasible.
Study on Automatic Monitoring Technology of Tunnel Crossing Coal Bed and Gas
Authors: He Cong
Published: January 2014

Based on a tunnel in western China as a project, with high water pressure, water-rich, karst features and other projects, launched grouting water research, the cement-silicate slurry mixing method for determining the mixing ratio to ensure the effectiveness and construction safety grouting key factors, as well as the specific implementation grouting effect evaluation method has important theoretical and practical value for the design and construction of similar tunnels provide a reference.
Study on Grouting Comprehensive Technical of Karst Tunnel with Water-Rich and High-Pressure
Authors: Zou Yu Lin
Published: January 2014

Based on a tunnel in western China as a project, with high water pressure, water-rich, karst features and other projects, launched grouting water research, the cement-silicate slurry mixing method for determining the mixing ratio to ensure the effectiveness and construction safety grouting key factors, as well as the specific implementation grouting effect evaluation method has important theoretical and practical value for the design and construction of similar tunnels provide a reference.
Cationization and Application of Polysaccharide as High Inhibitive Drilling Fluid Additive
Authors: Zhang Jie , Zhang Qiang , Chen Gang , Zhao Jing Rui , Xu Ren Jun
Published: January 2014

To improve the solubility of a kind of plant polysaccharide derivative (SJ) in drilling fluid system, it was modified by cationization with GTA as cationic etherifying agent. The reaction conditions were investigated by orthogonal designed experiments, and the optimized conditions were as follows: the mass ratio of GTA to SJ is 0.6g/1g with pH 12 at the temperature of 90°C. The viscosity of cationic SJ (CSJ) drilling fluid system was greatly improved and the temperature had a slight effect on rheological properties below 100°C. The inhibitive property of CSJ is evaluated by clay-swelling tests and the mud ball immersing tests, which is obviously stronger than SJ and even more effective than 4%wt KCl solution.
Simulation on Building Energy Consumption for a Residential Building
Authors: Liu Ze Qin , Zuo Zhen Jun , Li Lin
Published: January 2014

A two floor residential building in Tianjin as the research object was studied in this paper. The software eQUEST was carried out to simulate residential buildings energy consumption, and to explore the annual total energy consumption of the residential building, which was influenced by air conditioning heating modes and the building orientations. The air conditioning and heating system modes used to simulate including the heat pump air conditioning, air conditioner & heat sink and radiant heating & heat sink. The simulated building orientations include east, west, south and north. The transformation of the sunshade direction could be obtained by changing the building orientation. The indoor design temperature in summer was set at 26°C, while winter design temperature was set at 18°C. As the result of the energy consumption simulation study showed that, the annual total energy consumption achieved the minimum when heat pump type air conditioning heating system was adopted. When the effected factors such as air conditioning heating system, indoor heat source condition, window size and some other factors which influenced energy consumption were constant, the simulation results might be found that the building orientation had a small influence on the building energy consumption.
Study of μс-Si:H Thin Films Prepared by RF-PECVD
Authors: Wang Xiao Jing
Published: January 2014

μc-Si:H thin films have been deposited on the 7059 glass substrate by RF-PECVD. Effects of film thickness on structure and properties of Si thin films were investigated by XRDRamanUV-Vis and precision multimeter. Experimental results indicated that uniform dense microcrystalline silicon thin films can be prepared by rf-PECVD, silicon thin films transferred from a-Si:H to μc-Si:H along with film thickness increased. For μc-Si:H, XRD spectrum occurred (111)(220) and (331) peak, grain size and crystalline volume fraction increased with thickness enhanced, arrived at 82%; optical band gap of μc-Si:H is 2.0~2.36eV and decreased when thickness increased, the transmittance was added firstly and then reduced with film thickness increased, the transmittance curve occurred redshift;the photosensitivity of the thin films was improved firstly and then decreased with thickness increased, which was highest at 104 quantity in the transition zone from a-Si:H to μc-Si:H.