bluuebunny/crossref_metadata_2025 huggingface dataset:
Research Flexural Properties of Prestressed Slabs
Authors: Meng Xian Hong , Tong Lin
Published: January 2015

This paper is aimed to study on the flexural performance of prestressed slab and prestressed composite slab ,in order to provide the reference in engineering.At first,the prestressed slab is loaded under unformly distributed load,and then prestressed plate deflection , crack measurements. According to the phenomenon and data of the test, the mechanical properties of prestressed slab is analyzed. The maximum deflection of prestressed slab satisfy the standard requirements under construction loads.
Drill Jig Design of Separator Slide Valve Index Hole
Authors: Sun Jian Fu
Published: January 2015

This article mainly introduced the design of separator valve dividing hole jig. First choose a reasonable design scheme, and then calculate a set of process scheme, including the positioning scheme of jig, drill jig stepping up scheme, jig dividing and wizard scheme. Put the jig assembly according to certain technical requirements after the corresponding processing, completed the design of drilling jig. Finally, the size and precision of the drill jig are analyzed.
The Technology Study of Steel Belt Feeding Machine of Crystallizer of Continuous Casting
Authors: Yu Lin Hui , Shen Ming Gang , Li Ji Dong , Wang Yi Yong , Su Jian Ming , Han Chu Fei
Published: January 2015

Crystallizer steel belt feeding technology make use of melt’s fusion decalescence, controlling the distribution of melt temperature field, restrain the columnar crystal’s growing to eliminate the composition segregation and internal loose of continuous casting. And it will improve the continuous casting’s quality. By discussing the effect of casting speed, the size of steel, casting section and other factors on the steel belt feeding speed, making comparison of different casting section get strip suitable feeding speed and range of strip size, combining with a steel for steel strip feeding test mold, its theoretical and practical production results the basic agreement
Wearable Device: Bless or Curse?
Authors: Hu Jian Feng
Published: January 2015

Wearable device was once developed which caused everybody's attention. Is it update or revolution for mobile terminal? It has a lot of characteristics which the current mobile terminal do not have. Of course, it also has some shortcomings, even hidden danger.
Exact Solution of Laminated Orthogonal Hyperbolic Shells of Thermoelastic with Four Simply Supported
Authors: Xue Jian Hai , Li Jia Yu
Published: January 2015

The exact solution of laminated Orthogonal Hyperbolic shell of thermoelastic composite is very important to investigate it’s the mechanical properties. Therefore, many studies were completed in this paper. Firstly, the non-homogeneous state equation in generic coordinates is derived for thermoelastic composites including thermal gradient relationships by the basic equations and state space method. Secondly, an augmented dimension constitutive relationship was obtained by combining thermal gradient relationships into constitutive relationships of composite constitutive relationships based on the theory of symplectic variable and precise time-integration with dimension expanding method. Lastly, uniting state space method and the augmented dimension constitutive relationships, a homogeneous state equation which can be solely solved was deduced by eliminating the stresses in plane. The homogeneous state equation can simplify greatly the solution process of the laminated Orthogonal Hyperbolic shell, improve the calculation accuracy. What’s more, it can be discrete straightly in finite element format. So, the homogeneous state equation, derived in the paper, can supply a new method for the exact solution of laminated structures with complicated boundary condition in practice.
The Effect of Attack Angle on the Performance of Wave Glider Wings
Authors: Zheng Bing Huan , Xu Chun Ying , Yao Chao Ling , Chen Jia Wang
Published: January 2015

In this paper, on the basis of static stress analysis of the Glider wings, we compare different factors influencing the drag force converted by the glider wings and optimize them by comparing the simulation results with the calculation results. The results shows that the horizontal component force is reach maximum value when attack angle reaches 45°. After that the horizontal component force decreases as attack angle increases. The horizontal component force is gradually increased as the flow rate increases under same attack angle.
Design and Study of Electroplating Driving Control System Based on PLC
Authors: Li Gui Yan
Published: January 2015

This is design of the plating train operation controlsystem based on PLC.The design includes two aspects: the hardware design andsoftware design. In the hardware design, the electrical control circuit wasdesigned first, and then determine the quantity, type, and distribution ofcomponents, thus complete the hardware design. When to design software, designan overall ladder diagram first, then to design each program one by one.
Adaptive Feedback Control of Stochastic Nonholonomic Systems with Uncertainties
Authors: Ju Gui Ling , Sun Wei Hai
Published: January 2015

This paper deals with the adaptive control design of stochastic nonholonomic system with uncertainties. The state-input scaling technique, stochastic Lyapunov-like theorem and back-stepping approach are used to design the feedback controller. The controllers guarantee all states of the closed-loop system are largely asymptotically stable in probability, In order to make the state scaling effective, a new switching control strategy based on the output measurement of the first subsystem is employed.
Development of Valve Controlled Microfluidics Based on STM32 Dual-Core ARM
Authors: Liu Kan , Fang Yi
Published: January 2015

This article describes a precisely microfluidic control system based on a dual-core STM32F10x microcontroller. The system consists of 32 independent microfluidic valve controlled output, human-computer interaction display, ethernet module, WIFI module, CAN module, USB module and graphical control interface. Using this microfluidic control system, the biological and medical workers precisely and conveniently control liquid in microfluidic chips. The microfluidic control system would be widely used for microfluidic chips.
Modeling of High Power Water Resistor Speed Control System of Wound Rotor Induction Motor
Authors: Yang Qi Yu , Zhang Xia , Chen Tian Rui
Published: January 2015

A variable value water resistor speed control system for rotor winding induction motor is introduced. On the basis of the structure about the water resistance and the governor principle, the steady-state mathematical model and the dynamic mathematical models are established. The effect of temperature changes on the resistance of the electrolyte solution is discussed, and temperature compensation is proposed. Simulation results show that the water resistance speed control system is feasible.
Study on Electromagnetic Heating System of Heat Transfer Oil and Automatic Temperature Control Algorithm
Authors: Wu Shun Wei
Published: January 2015

There are some insufficient on the existing heating system of heat transfer oil,such as the heavy pollution, large consumption of electricity, waste of resources, and many hidden danger. through the adoption of automatic calculus intelligent PID temperature control algorithm and the electromagnetic heating mode, the shortage of the original system was improved, and the relevant error was analyzed, and then the overall composition of the system was designed. The the key technology and specific measures of system design were studied.
The Design of Storage Box Control System Based on Fingerprint Identification
Authors: Lao Fei , Li Guo Xin
Published: January 2015

For the design of storagebox control system supplied to fixed customers , this paper presents the designideas that the storage box controlsystem based on fingerprint identification.The core design philosophy is basedon the PC as the core, connecting the fingerprint recognition module and thepower locks array control systems through two com ports. through the smalldatabase system on the PC, it can manage the two moduls effectively.When theuser's fingerprint match, the fingerprint identification module returns to thePC a finger signal,the small datebase will correct the electricity lock of theusers,PC then transmit this signal to MCU,then it starts the appropriateelectricity lock.After a long time operating ,this system can works much stableand reliable.
Research on FCM Algorithm in the 3D Visualization System of Medical Images
Authors: Hong Qi , Han Gai Dong
Published: January 2015

FCM is a fuzzy segmentation based on overall situation, is typically applied in data mining and pattern recognition. In this paper, the segmentation of brain CT is achieved through FCM clustering algorithm in three-dimensional medical image visualization system, the organization in brain CT processed with FCM clustering can be well identified.However, the connectivity of brain organization is severely damaged. In view of this situation, it is proposed that the object in the brain image through clustering be judged by classification of its neighbor domain. The result shows that this method brings a significant improvement in the problem of organization connectivity brought by FCM clustering. Judging the brain image through FCM clustering by classification of its neighbor domain, a brain CT image of better organization integrity and connectivity can be got.
Car Networking Micro Letter for Car Fuel Consumption Test of Significance, the Research Present Situation and Main Problems
Authors: Jin Huan
Published: January 2015

Based on the analysis and summarizing domestic and foreign automobile fuel consumption testing instruments, on the basis of common problems and characteristics of the development level and development trend, according to its adoption of advanced sensor technology, car league two model of the RFID system, car league two highway fuel consumption algorithm (FCIV), microcontroller technology and display technology, the development of intelligent car fuel consumption test instrument to test the fuel consumption, etc. Introduces the current development of fuel consumption detection system at home and abroad. Through to the traditional means of traffic information collection, radio frequency identification (RFID) system is real-time, effective, but there are also acquired data in space and the smell of the discrete case, car league two model of the RFID system, the collection of traffic information to classify the sections for the smallest discrete unit using different fuel consumption test method, developed suitable for different test conditions and test function for fuel testing instrument. Based on high speed road vehicle fuel consumption influence factors to complete various types of vehicle traffic condition modeling micro letter car networking development main problems are put forward. According to the specific situation to modify theoretical model, thus improve fuel consumption detection accuracy. Compare car fuel consumption directly the types and characteristics of the measuring method and indirect measuring method, analysis of displacement method, gravity method and carbon balance method, ultrasonic method and method of fuel injection quantity accumulation detection principle, calculation of mathematical model and its application scope and characteristics. Fuel consumption test system theory is feasible; the fuel consumption test is of great significance.
Research on Wireless Resource Management
Authors: Wang Hao , Sha Sha
Published: January 2015

Wireless resource management is one of the key techniques in cognitive radio networks, which attracts great research attention, international cooperation project and other fundings. The dissertation contains valuable work on both theories and applications.A novel method using bipartite graph matching is proposed to realize the dynamic spectrum access. An idealized method and an operative method are presented respectively based on the famous Kuhn-Munkre algorithm. Experimental results show that proposed algorithms dramatically maximize the spectrum utilization and reduce allocation conflictions among users.
Optimization and Management in Order to Drive Targeted Networking Memory Database
Authors: Liu Ji
Published: January 2015

In today's vehicle networking system architecture is mainly composed of four parts: sensor networks, wireless communication networks, cloud computing platforms and vehicle terminal. Wireless sensor network is responsible for the front of the real-time collection of traffic information, a wireless communication network to send information to the backend of the cloud computing platform, cloud computing platform to handle a large number of vehicles to collect real-time information from the front, and finally sends the information to the end user. In this thesis, this car networking research background, analyze vehicle networking system architecture consisting of performance indicators for each part of the system recognize cloud platform for large data processing efficiency as well as room for improvement. Then put forward the traditional computing platform I / O disk database with in-memory database to replace the cloud to enhance cloud computing platform for large data processing efficiency.
A Study on the Pros and Cons of Automatic Speech Translation - On the Speech to Speech Translation System Latest Achieved by Microsoft
Authors: Liu Jia Rong
Published: January 2015

Focusing on the speech recognition function of Automatic Speech Translation System, applying the figures and data collected from tests, and testing the deduced formula, the thesis mainly compares the computer-aided speech recognition with the pure manual one. As shown by the results, during the whole process of speech recognition, the computer-aided one consumes less time than the pure manual one does, and this time remains to be 2 seconds. It can be said that the technological feature, “little time-consuming”, ensures the system’s superiority of spreading information in unit time.
Numerical Analysis on Drainage Parameters in a High Drainage Roadway
Authors: Yan Yong Sheng , Zhang Jing Zhao , Wang Hong Gang , Yan Zhen Guo
Published: January 2015

The numerical tests of the optimized drainage parameters in a high drainage roadway were conducted with different inlet air velocities, drainage ratios and integrity lengths. The results show that the upper corner's gas concentration decreases gradually with the inlet air velocity and drainage ratio increasing, while there have not obvious change with the Different Integrity Lengthss. Considering from the gas control and gas drainage, the reasonable inlet air velocity is 1-1.25m/s and the right drainage ratio is about 0.3.
Geometric Model of CVD Mono-Crystalline Diamond Growth
Authors: Zhang Li Zhu , Wang Fu Zhong , Tian Guang
Published: January 2015

In order to describe the morphology of diamond films, we have developed a geometrical growth model which takes into account the displacement of the observed faces [1].We will see how to establish the topologies that are potentially accessible to CVD diamond growth.Lastly, we will present results showing the influence of the occurrence of certain crystalline faces on the film characteristics. From these results, we will show how the growth model and to establish a growth strategy aimed at obtaining large usable surface area crystals.
The Research on Solar Cells Based on Improving Conversion Efficiency
Authors: Tang Yu Wen
Published: January 2015

Solar energy is an inexhaustible and renewable energy without environmental pollution. Solar energy can be used in three kinds of forms: solar thermal energy, photochemical conversion and photovoltaic power generation. Among these, the final form of photovoltaic power generation is electricity which can be transported, applied and stored conveniently. On the basis of photovoltaic effect, solar cell is developed as a new technology to convert light energy into electrical energy using semiconductor. Up to now the two key problems of the development of solar cells are how to improve the conversion efficiency and reduce cost. Therefore, the material and production technology used for solar cells are discussed based on improving conversion efficiency in this article.
Additives-Effects during Environmental Protection Methyl Sulfonic Acid Salt Bath of the Performance
Authors: Tan Yong
Published: January 2015

Methyl sulfonate tin plating bath is a kind of high production efficiency,good environmental performance and excellent performance of the new type of tin plating bath.Research by electrochemical technology analysis an influence on electrochemical performance of the tin plating bath by adding methyl sulfonate in bath.The results show that it significantly improve the polarization properties of the bath after adding additives and the deposition potential of tin ion. The result is that polarization properties of bath perform the best when additive A is added to25mL/L,That the throwing power of the bath is 98 % and the cover ing power is 100 %.
A Design of the Environment Monitoring System
Authors: Xie Chun Yan
Published: January 2015

In order to improve the deficiency of environmental monitoring system in real-time, remote monitoring and other aspects, this paper designs an environmental monitoring system based on MCU and GSM network. It designs the struture diagram of the system and analyzes the procedure of data collection and transmission. This system achieves net control and long-distance control of the environmental monitoring.
Research on Evaluation Index System and Fuzzy Clustering Iterative Model for Local Water Conservancy Development
Authors: Zhou Xiang Nan , Chai Fu Xin , Zhang Hang , Xie Xin Min
Published: January 2015

According to the current water construction features and requirements, 11 indexes on three aspects which involve in water environment protection, the flood management and disaster mitigation and effective utilization of water resources are selected to establish a set of objective and scientific evaluation index system of local water conservancy development. Based on its hierarchy characteristics, a fuzzy clustering iterative model is established to determine the index weights. Finally, the model is used to evaluate water conservancy development situation in 14 cities of Liaoning province. The rank scoring of water development of each city in Liaoning province is analyzed, and the key factor is found.
The Effects of Polysaccharide from Gynostemma pentaphyllum Supplementation on Exhaustive Exercise-Induced Fatigue
Authors: Li Chang Jun , Li Ang
Published: January 2015

The present study aimed to determine the effects of polysaccharides from Gynostemma Pentaphyllum (PGP) supplementation on exhaustive exercise-induced fatigue in mice. The mice were divided into four experimental groups at random, i.e. control, low-dose PGP, medium-dose PGP, and high-dose PGP treatment groups. An oral administration of distilled water was given to the mice in the control group, and different doses of PGP (100, 200 and 400 mg/kg body weight/day) were given to the mice in the treatment groups. After 28 days, the weight-loaded swimming test was performed, along with the determination of blood biochemical parameters, liver glycogen and muscle glycogen contents. The results indicated that PGP supplementation had anti-fatigue effects, which could make mice swim for a longer time to exhaustion, with the blood lactic acid, serum urea nitrogen, serum triglycerides, and serum creatine kinase contents decreased, and the liver glycogen and muscle glycogen contents increased.
Urban Sludge and the Performance of the System of Wood Activated Carbon Research
Authors: Cheng Yan Kun
Published: January 2015

In urban sludge and sawdust as raw material,using zinc chloride activation method in the preparation of activated carbon under different operating conditions, through the detection of specific surface area activated carbon sample and methylene blue adsorption value and the iodine adsorption value, studies the impregnation ratio, activation time and activation temperature operating conditions affect the performance of activated carbon sample. Through to the physical and chemical modification of activated carbon,To the preparation of activated carbon adsorption purification treatment experiment was carried out in the discharge of sewage.
Performance of a Compression-Ignition Engine Fueled with Diesel/Biodiesel Blends
Authors: Zhu Rong Fu , Wang Yun Long , Wang Hui , Sun Yuan Tao
Published: January 2015

The performance of engine fueled with diesel/biodiesel blends was tested. It was indicated from the experimental results that the brake power, torque out and brake specific fuel consumption of engine fueled with diesel/biodiesel caused slight variations, while NOx emission increased significantly compared with engine fueled with diesel. In order to reduce NOx emission of engine fueled with pure biodiesel, retarding fuel delivery advance angle was used, and the NOx emission tests revealed that the NOx emission decreased significantly at different engine speeds.
Research on Civil Engineering with Comprehensive Evaluation Model of Urban Old-Age Real Estate Building Energy Saving
Authors: Liu Hua , Zhao Yi Bo
Published: January 2015

Based on the analysis on civil engineering of existing old-age real estate building energy saving, this paper builts comprehensive evaluation index system, and analyzes its evaluation index content and determines the standards. Using grey relational analysis to establish the simplified evaluation index system,and based on artificial neural network, this paper then establishes a comprehensive evaluation model of urban old-age real estate building energy saving, which not only helps to control building energy saving effect, but also helps to guide new old-age real estate building energy saving to carry out, and promotes the development of civil engineering industry.
Research on Civil Projects among the Participates in Government Investment Projects Based on Rent-Seeking Theory
Authors: Wu Yun Na , Zheng Shao Qing , Tan Lei
Published: January 2015

Government investment project is the focus of the national construction, also is one of main driving force for the development of the national economy, and the amount of money involved is often large, as well as distributed in all parts of the country , therefore it takes an crucial position in the entire national economy. Moreover, from the perspective of the nature, government investment projects and people's work and life are closely related, which is a hotspot that arose widespread concerns in the whole society. The participants in government investment projects mainly include government, authority department and the contractor, and they reverberate through the project. Each participant's behavior will have a significant impact on the project, and behavioral problems in project management occupies increasingly important role, therefore it is significant to strengthen the research on the behavioral risk of project participants. This paper mainly investigates the rent-seeking activities, which would exist between authority department and the contractor, and aims at improving the supervision effect through the game analysis model.
A New Model to Accelerate Data Collection
Authors: Li Ke Wei
Published: January 2015

This paper presents a new model based on assembly line to accelerate the speed of data collection. Traditional data collecting and state monitoring technology requires a CPU which is simple but results time consuming. Assembly line models make the data collection and monitoring process simultaneously and hence improve the efficiency. This paper compares several processing hierarchy and at the end propose a feasible model structure.
An Automatic Equipment for Measure of Electrical Characteristics of Nanoelectronic Devices
Authors: Bakerenkov A.S.
Published: January 2015

An automatic equipment for measurement of voltage-current characteristic of semiconductor devices was described. The technique for precision voltage setting, which enables to obtain ±1mV accuracy in ±10V range, was described. Logarithmic current sensors were used for measurements of the current and calibration technique of the sensors was presented. It provides relative accuracy 1% in wide current range (0,1nA..10mA).
In Vitro Antitumor Efficacy of Puerarin Nanosuspension against Human HepG2 Cells
Authors: Lu Wen Liang , Shi Hui Zhe , Zhou Qun , Wang Zhi Ping , Xiong Sheng , Wang Yi Fei , Zhang Yan Jun
Published: January 2015

Hepatocarcinoma, a malignant cancer, threaten human life badly. It is a current issue to seek the effective natural remedy from plant to treat cancer due to the resistance of the advanced hepatocarcinoma to chemotherapy. Puerarin (Pue), a major active ingredient in the traditional Chinese medicine Gegen, has a wide range of pharmacological properties and is considered to have anti-hepatocarcinoma effects. However its low oral bioavailability restricts its wide application. In this report, Pue-nanosuspension (Pue-NS) composed of Pue and poloxamer 188 was prepared by high pressure homogenization technique. The in vitro anti-hepatocarcinoma effects of Pue-NS relative to efficacy of bulk Pue were evaluated. The particle size and zeta potential of Pue-NS were 218.5 nm and −18.8 mV, respectively. MTT assay showed that Pue-NS effectively inhibited the proliferation of HepG2 cells, and the corresponding IC50 values of Pue-NS and bulk Pue were 3.39 and 5.73 μg/ml. These results suggest that the delivery of Pue-NS is a promising approach for treating tumors.
Study on Microstructure and Phase Composition of Co-8.8Al-9.8W Superalloy with Alloying Element Tantalum
Authors: Xu Yang Tao , Sha Qi Zhen , Zhao Wan Li
Published: January 2015

In order to study the effect of tantalum to the microstructure and phase composition of Co-8.8Al-9.8W-XTa (X=0,2,at%) superalloy. The Co-8.8Al-9.8W-XTa (X=0,2) supperalloy used pure element powder, according to the ratio of different atomic percentage composition to make ingredients. It is mixed by planetary ball mill, pressed into blocks after the melting shape. Vacuum induction melting process was prepared by melting, after grinding, polishing, and after a volume of 5% perchloric acid and 95% of the electrolytic etching solution prepared in ethanol corrosion observed after analysis of the microstructure and phase composition by OM and XRD analysis. It can be found that the 9.8W and 2Ta alloy were mainly composed of rich γ-Co matrix of austenite precipitation of γ phase and coherent with matrix of the L12 structure of γ′-Co3(Al,W) phase. In addition, Ta element has effect on grain refinement and the number of γ′-Co3(Al,W) phase refines grain.
Quercetin Molecularly Imprinted Polymers and its Application in the Separation and Analysis of Natural Products
Authors: Liu Rui Mei , Gui Lai , Dai Shi Feng , Zhang Yan Ju , Xu Zhi Gang
Published: January 2015

Molecularly imprinted polymers could selectively adsorb the target analytes from complex matrix. Chinese medicinal herbs had the characteristics of multi-component contents and complicated matrix. Molecularly imprinted polymers were very suitable for the selective extraction and purification of effective components in Chinese medicinal herbs. In this paper, the preparation methods of quercetin molecularly imprinted polymers and its applications in the separation and analysis of Chinese medicinal herbs were comprehensively reported. It would be a good reference for the selective separation and purification of quercetin in Chinese medicinal herbs.
Porosity of Solid and Cored Turbine Blades of Aircraft Engines
Authors: Roskosz Stanisław , Nawrocki Jacek , Kubiak Krzysztof
Published: January 2015

Paper presents results of quantitative evaluation of porosity conducted on big, thin walled airfoil turbine blades made from Inconel 713C alloy. To decrease mass, blades are design and manufacture like thin walled cored castings. Manufacturing of big thin walled casting airfoil blades is extremely difficult. During exploitation casting work undergo cycle fatigue. In that cause casting should be free of casting defects, including porosity. Conducted research focused on Inconel 713C superalloy pouring temperature effect on porosity level of cored casted turbine blade. Results were compared to porosity of solid casted turbine blade. It was found that porosity of cored blades is lower than solid blade porosity. In cored blades higher porosity is located on airfoil convex side. Airfoil concave side has lower porosity.
The Influence of Si Content in Steel on Growth Kinetics and Structure of Hot Dip ZnAl23Si Coatings
Authors: Kania Henryk
Published: January 2015

In the paper the results of tests on obtaining coatings in a ZnAl bath of eutoctoid composition on steel with various contents of silicon by use of the batch hot dip method are presented. The growth kinetics of coatings obtained in a ZnAl23 bath with the addition of 1% and 2% of Si on steel with low silicon content (0.01% Si), on Sandelin steel (0.035% Si) and on high-silicon steel (0.27% Si) have been defined. The structure of coatings on tested steels was developed. It has been established that coatings obtained on the Sandelin steel and on high-silicon steel have similar thickness and structure as compared to coatings obtained on low-silicon steel.
The Influence of High Velocity Thermal Spraying Methods on Top Surface Topography of WC-Co Coatings
Authors: Myalska Hanna , Wieczorek Jakub , Szymański Krzysztof , Moskal Grzegorz
Published: January 2015

Characterization of top surfaces of WC-Co coatings obtained during deposition process of high velocity thermal spraying type was showed in this article. The feedstock powder was so called “superfine” powder of WC-17Co types produced by Inframat. In first part of article short characterization of powder was presented, especially characterization of it morphology including shape, internal microstructure and grain size description. The second part of article is dedicated to characterization of microstructure and topography of top surface of coatings deposited by two different methods of high velocity thermal spraying. In this case analysis of top-surface condition by scanning microscopy with chemical analysis in microareas was used and as well as a qualitative and quantitative analysis of topography of carbides surface by traditional non-contact and laser profilometry.
Characteristics of the Structure and Corrosion Resistance of New Elaborated Coatings for Energy Industry
Authors: Szczucka-Lasota Bożena , Szymański Krzysztof
Published: January 2015

The material conception of manufacture new coatings with high dispersion phases are presented. The coatings were obtained by thermally sprayed technology. The results of the hot temperature oxidation test of the new elaborated coatings were analyzed and compared. The reaction rate constant was calculated. The mass chance as a function of spallation process were recorded The microstructure of coatings was obtained by LM microscopy. After corrosion tests, the presented coatings were investigated in respect of the changes on the surface like: pits, cracks as well as oxidation layers. The results have been stored using digital imaging techniques, Nikon and PC. The presented coatings can be used to basic protection to wear and corrosion condition in the energy boiler.
The Use of Trapezoidal Fuzzy Numbers in the Model to Optimize the Batch of Electric Arc Furnace
Authors: Machulec Bolesław , Kuźnik Andrzej
Published: January 2015

The classical models to optimize the batch of electric arc furnace require precise and predetermined numerical values. In order to determine the scrap steel properties (eg. chemical composition), we are not able to define these values precisely and accurately. This situation is due to the heterogeneity and specificity of this material, which is related to its origin and way of obtaining. Therefore the usefulness of classical models to optimize the batch of electric arc furnace is limited. The fuzzy numbers with trapezoidal membership function were applied as a model in order to describe the technological process of steelmaking, which is neither accurate nor of ambiguous nature of the parameters. The advantage of trapezoidal numbers is a simple algorithm of arithmetic operations as well as easy and intuitive interpretation. The structure of optimization model with fuzzy parameters is similar to the classical linear optimization model of the mixtures composition. The optimization model, that is formulated on the fuzzy ranges arithmetic principles, allows to ensure that the quality parameters of the batch mix for the electric arc furnace are as precise as the ones described by electro-steel works, even though the quality parameters of scrap steel as well as some of the parameters of steel melting technological process are described ambiguously.
Effect of Heat Treatment on the Microstructure and Mechanical Properties of Sintered Stainless Tool Steel
Authors: Ducki Kazimierz J. , Jasiewicz Jakub , Junak Grzegorz , Wojtynek Lilianna
Published: January 2015

In the paper, the new highly alloyed Cr-V-Mo stainless tool steel produced via the powder metallurgy method was examined. The Elmax steel is a new-generation sintered tool steel characterised by high resistance to wear and corrosion and very good dimensional stability. The purpose of the paper was to analyse the influence of the rate of cooling from the temperature of austenitization and of an additional sub-zero treatment on the microstructure, phase composition and the curve of mechanical properties of steel during tempering. It has been found that a sub-zero treatment decreased the retained austenite fraction in the steel structure after hardening in oil or compressed air. The use of a sub-zero treatment on specimens after hardening had no significant effect on steel hardness after tempering, but it negatively affected the course of bending strength and impact strength of steel. Based on the obtained results it has been found that optimum mechanical properties for the Elmax steel were obtained after hardening from a temperature of 1080°C in compressed air (without a sub-zero treatment) and tempering at a temperature of 180°C.
Compound BMPR2 Gene Mutations in a Malignant Variant of Idiopathic Pulmonary Arterial Hypertension
Authors: Serra Walter , Marziliano Nicola , Corradi Domenico , Brigati Francesca , Intrieri Mariano , Sapere Nadia , Caporale Vittoria , Merlini Piera Angelica , Chetta Alfredo , Ardissino Diego
Published: January 2015

Pulmonary arterial hypertension (PAH; MIM 600799) is frequently associated with concomitant diseases, including congenital heart disease. 6% of patients with PAH show a family history of the disease [hereditary PAH (HPAH)], with the major genetic determinants of HPAH being heterozygous germline mutations in the bone morphogenetic protein type II receptor (BMPR2). We present the case of a 38-year-old woman of Indian descent; initially admitted with progressive dyspnea [New York Heart Association (NYHA) class III]. The results of the proband’s clinical assessments are presented here. Cardiac catheterization confirmed idiopathic PAH with severe right ventricular hypertrophy associated with pulmonary arteriopathy. Initial treatment comprised the dual endothelin receptor antagonist, bosentan, furosemide, warfarin and intravenous infusion of prostaglandin I2 (PGI2) for 3 days. Despite this, the patient died of pulmonary hemorrhagic edema and cardiogenic shock after 6 days of intensive care. After relatives’ consent, post mortem assessments confirmed a diagnosis of PAH; the heart displayed significant right ventricular hypertrophy and it was particularly noted that the right atrial appendage had undergone extreme dilation. Pulmonary arteriopathy was characterized by medial hypertrophy, arterialization of muscular arteries and muscularization of non-muscularized distal arteries. Molecular genetic analyses revealed the presence of cis-mutations in the BMPR2 gene (p.Cys123Arg and p.Arg332X). Cosegregation studies were not available. Our findings suggest that mutations of the BMPR2 gene gave rise to the onset of PAH in this patient and that the severity of the onset and progression could be attributed to the presence of multiple mutations in a genedosage manner.
Combination of Capecitabine and Oxaliplatin is an Effective Treatment Option for Advanced Neuroendocrine Tumors
Authors: Ferrarotto Renata , Testa Laura , Riechelmann Rachel P. , Sahade Marina , Siqueira Luiz T. , Costa Frederico P. , Hoff Paulo M.
Published: January 2015

The role of chemotherapy in well differentiated neuroendocrine tumors (NET) has been questioned. It was recently demonstrated that everolimus and sunitinib have activity in low and intermediate grade pancreatic NET. The aim of this study was to evaluate the activity of capecitabine and oxaliplatin (CapOx) combination in treating NET in an unselected population. In this regard, we retrospectively evaluated 24 patients diagnosed with metastatic NET treated with CapOx at two Brazilian institutes that are reference centers in cancer care. Tumor response was measured by RECIST criteria. Median age at diagnosis was 56 years, 71% had ECOG 0 or 1, the majority of tumors were primary from pancreas (67%) followed by lung (17%), and 29% were functional. According to WHO classification criteria, 25% were grade 1, 37.5% grade 2 and 37.5% grade 3. Most patients received CapOx as second-line therapy, with a median of 6 cycles. Twenty-nine percent of patients had partial response by RECIST criteria. No association was observed between response rate and tumor grade, primary site or line of CapOx. The median time to progression was 9.8 months and median time to treatment failure was 12.1 months. Seventy-five percent of patients are alive at the time of this analysis; therefore, median overall survival was not reached. The CapOx combination was shown to be active in an unselected population with metastatic NET and may be a good platform for the incorporation of the newer molecular targeted agents being investigated for the treatment of this entity.
Extraskeletal Myxoid Chondrosarcoma Presenting as an Intradural Spinal Mass: Report of a Rare Clinical Presentation with an Emphasis on Differential Diagnostic Considerations
Authors: Rao Priya , Colen Rivka R. , Bruner Janet M. , Meis Jeanne M.
Published: January 2015

Extraskeletal myxoid chondrosarcoma is a rare soft tissue neoplasm that occurs predominantly in the soft tissues of the lower extremities. Herein we present a case of a 29 year old male who presented with bilateral femoral numbness believed to be the result of prior injury to his back. A magnetic resonance imaging revealed a mass in the T4-T5 epidural space compressing the spinal cord. Laminectomy was performed and the lesion removed piecemeal. The pathology specimen consisted of multiple fragments of dura involved by a myxoid neoplasm with a nodular growth pattern. The tumor cells were arranged in anastomosing cords and strands. Individual tumor cells were small, of uniform size and shape, with small hyperchromatic nuclei and scant eosinophilic cytoplasm. Immunohistochemical stains were performed which showed the tumor cells were diffusely positive for vimentin and focally positive for EMA, S-100 protein and cytokeratin, whereas they were negative for CD34 and CD99. Fluorescence in situ hybridization (FISH) studies showed a clonal population of cells with re-arrangement of the EWSR1 locus, confirming the histologic impression of extraskeletal myxoid chondrosarcoma. This is the first report of a case of an extraskeletal myxoid chondrosarcoma arising from the dura, confirmed to have rearrangement of the EWSR1 gene by FISH. There have only been two other cases of dural based extraskeletal myxoid chondrosarcoma reported prior to our case. We also briefly review the published literature and discuss differential diagnostic considerations for this rare tumor.
The Example of the UK SHOT Haemovigilance System
Authors: Eleftheriou Perla
Published: January 2015

SHOT (Serious Hazards of Transfusion scheme) is the UK’s National confidential haemovigilance system, and was set up in 1996. It is an independent, confidential, professionally led haemovigilance scheme. Initially the reporting was voluntary but now required by several professional bodies. SHOT publishes annual reports with recommendations and circulates to all relevant organizations including the 4 UK Blood services, Departments of Health in England, Wales, Scotland and Northern Ireland, all relevant professional bodies and reporting hospitals. Over the 17 years of reporting, the evidence gathered has prompted changes in transfusion practice from the selection and management of donors to changes in hospital practice, better education and training. Acute transfusion reactions and transfusion-associated circulatory overload carry the highest risk for morbidity and death. Greatest risk to patients remain errors in the process at the point of blood sampling, in the laboratory and at bedside administration. SHOT’s objectives are to use findings to improve standards of hospital transfusion practice, to educate users on transfusion hazards and prevention, to aid production of clinical guidelines in blood transfusion and to inform national policy on transfusion safety. MHRA is the UK competent authority to which serious adverse reactions and events have to be reported annually. Overall the most common adverse incidents are caused by errors, resulting in the transfusion of an incorrect component or one that does not meet the specific requirements of the patient (e.g. not irradiated or not appropriately antigen matched). TACO (transfusion associated circulatory overload) accounts for most deaths and major morbidity reported to SHOT but is overall underreported. Transfusions are not always given appropriately. This may be due to wrong haemoglobin results, failure to assess patients appropriately, or avoidable use of emergency O RhD negative units because of poor communication or planning. Review of cases of haemolytic transfusion reactions (HTR) shows that they are observed mainly in Sickle Cell Disease patients. HTR are associated with major morbidity (10/16 cases in sickle cell patients over 3 years) and death (a child in 2010). SCD patients are at particular risk of alloimmunization and this can be reduced by red cell phenotyping prior to the first transfusion followed by routine matching for at least the Rh and Kell groups. SHOT output data led over the time to the development of strategies to improve transfusion safety such as the implementation of guidelines for improving practice, implementation of the National Comparative Audit of Blood Transfusion programme, the publication of the Better blood transfusion initiatives and the establishment of The UK transfusion laboratory collaborative.
Overview of Chelation Recommendations for Thalassaemia and Sickle Cell Disease
Authors: Kaya Banu
Published: January 2015

The long term consequences of iron toxicity are mostly reversible with effective iron chelation therapy. Recommendations for use of chelation therapy in transfusion dependent thalassaemia (TDT), sickle cell disease (SCD) and non transfusion dependent thalassaemia (NTDT) continue to evolve as our knowledge and clinical experience increases. Improved chelation options including drug combinations and a better understanding of condition specific factors may help to improve efficiency of chelation regimens and meet the needs of patients more effectively.
Combined Effects of Silver Nanoparticles and Humic and Fulvic Acids on Vibrio splendidus Growth
Authors: Lemarchand K.
Published: January 2015

Over the last decade, industrial production and commercial use of engineered nanomateri- als (ENMs), such as silver nanoparticles (AgNPs) and carbon nanotubes (CNTs), have significantly increased worldwide [...]
Development of an Analytical Method for the Determination of Low-Level of Dioxin and Furans in Marine and Rreshwater Species
Authors: Desrosiers M.
Published: January 2015

Persistent organic pollutants (POPs) such as polychlorinated biphenyls (PCBs), poly- brominated diphenyl ethers (PBDEs) and poly- chlorinated dibenzo- p -dioxins/furans (PCDD/ Fs) are well-known ubiquitous contaminants, persistent in the environment and could bioamplify in trophic food webs [...]
Assessing the test–retest reliability of career path appreciation as a measure of current and potential work decision-making capability
Authors: Oosthuizen Rudolf M. , Coetzee Melinde , Kruger Ester
Published: January 2015

Orientation: Assessing and developing managerial decision-making capability in a complex and volatile marketplace is imperative for most South African businesses.Purpose: The objective of this study was to assess the test–retest reliability of the career path appreciation (CPA) procedure in assessing current and potential levels of work decision-making capability. The study also explored whether different gender and race groups differed significantly in terms of these levels at two CPA assessments.Motivation for the study: Limited recent test–retest research has been done regarding the reliability of the CPA technique as a tool for measuring the work decision-making capability of professional and managerial talent in the South African context. Scholars and practitioners in the field of industrial psychology could therefore benefit from follow-up research into the reliability of CPA.Research approach, design and method: The research followed an ex post facto correlational design using longitudinal data of a non-probability purposive sample (N = 527) within the Bioss SA database.Main findings: The results showed that the participants’ first CPA assessment scores correlated significantly and positively with their second CPA assessment scores. Gender and race groups differed significantly in their levels of current work decision-making capability at both assessments.Practical/managerial implications: The CPA procedure can be used with confidence as an assessment tool in the selection, mentoring and development of high-potential managerial and professional talent for diverse gender and race groups.Contribution/value-add: These findings contribute valuable information regarding the reliability of CPA and the differences between race and gender groups in the South African context.
О гипотезе Шура в $\mathbb R^4$
Authors: Bulankina Vera V , Kupavskii Andrey Borisovich , Polyanskii Alexandr Andreevich
Published: January 2015

Граф диаметров в $\mathbb R^d$ - это граф,
множество вершин которого является конечным
подмножеством $\mathbb R^d$, а ребрами соединены
пары вершин, отстоящих на расстояние, равное
диаметру множества вершин. Эта работа посвящена
гипотезе Шура, которая утверждает следующее:
в любом графе диаметров в $\mathbb R^d$ на $n$
вершинах не более $n$ полных подграфов размера $d$.
Известно, что гипотеза Шура верна в размерностях
$d\le 3$. Мы доказываем эту гипотезу для $d=4$
и приводим простое доказательство для случая $d=3$.
Библиография: 15 названий.
El retrato en los primeros cartelistas españoles de cine: De la escena costumbrista al retrato realista
Authors: Morales-Carrión María T.
Published: January 2015

El artículo, que forma parte de un trabajo más amplio, pretende resaltar el uso del retrato en los carteles de cine de los primeros cartelistas españoles antes de que se implantase el star-sytem en España. Para ello se describe la evolución que se produce en la representación de los personajes en los carteles de cine desde los años diez hasta el inicio de los treinta del siglo XX, período histórico de profundas influencias de las vanguardias artísticas y publicitarias en las obras de nuestros cartelistas. Sin embargo, a finales de los años veinte se pasa de la simple inclusión de una escena, basada en un fotograma de una película, a la representación cromática y realista del rostro de la estrella, justamente en los años en los que comienza a notarse la influencia de los grandes estudios norteamericanos en España. No obstante, destacan su libertad técnica y compositiva, y la influencia que ejercen sobre los cartelistas posteriores ya que muchos de ellos integrarán los retratos y ambientaciones en sus carteles, siguiendo las directrices de los grandes estudios o los estudios independientes: o sea, los estudios en general, pero sin abandonar su forma personal de pintar los rostros de las estrellas de cine.