bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on High Efficiency Technology of Industrial Circulating Water in Yellow River Estuary Area
Authors: Yang Xiao Feng , Zhang Bao Xiang , Shi Yu Zhi , Fan Ming Yuan , Liu Hai Jiao
Published: March 2015

Most of the water in yellow river estuary mixed with irrigation and leaching water, saline and brackish water, recycled water discharge into the sea without reuse except part for agriculture irrigation and aquaculture, a small part for recycling. In order to improve the efficiency and benefits of water resources utilization, this paper proposes a new way to study industrial water recycling method of the mixed water including irrigation and leaching water, saline and brackish water, recycled water. The research could have an important realistic significance to ease the contradiction between supply and demand of water resources, reduce reliance on the Yellow River and improve regional eco-environment.
The Impacts of Different Land Use Patterns on Water Volume in the Xixian Watershed, China
Authors: Han Yuan Yuan , Cai Tao
Published: March 2015

In this study, Soil and Water Assessment Tool (SWAT) model was used to simulate land-use change effects on water quantity in the upper Huaihe river basin above the Xixian hydrological controlling station with a catchment area of 10,190 km2 by the use of three-phase (1980s、1990s、2000s) land-use maps, soil type map (1:200000), 1980 to 2008 daily time series of rainfall from the upper Huaihe river basin. On the basis of the simulated time series of daily runoff, land-use change effects on spatio-temporal change patterns of runoff coefficients and runoff modules were investigated. The results revealed that under the same condition of soil texture and terrain slope the advantage for runoff generation and the sensitivity of rainfall-runoff relationship to rainfall descended by farmland, paddy field, woodland.The outputs could provide important references for soil and water conservation and river health protection in the upper stream of Huaihe river.
A Comparative Study on Magnetic Susceptibility of Cinnamon Soil and Brown Soil in Pingyi County, Shandong Province, China
Authors: Ding Xin Chao , Xu Shu Jian , Ni Zhi Chao , Wang Hai Yan
Published: March 2015

Magnetic susceptibility is the most commonly used soil magnetic parameters, reflecting the degree of magnetization substance. The investigation of two typical soil sections in Pingyi County, Shandong Province shows that there are some differences on magnetic susceptibility between the cinnamon soil profile and the brown soil profile. The results indicate that: (1) Significant difference of magnetic properties is existed among the cinnamon soil profile and the brown soil profile. The mean χlfvalue of the samples from the cinnamon soil profile is 82.80×10-8m3/kg, distinctly lower than those from the brown soil profile, which have a mean value of 616.72×10-8 m3/kg; (2) This indicates a low proportion of SP in samples from the brown soil profile and a high proportion of SP in samples from the cinnamon soil profile; (3) Magnetic susceptibility features is a new method which can be used for soil preliminary classification.
Research of Crop Water-Saving Irrigation Optimization
Authors: Hu Chang , Li Dang Sheng
Published: March 2015

According to Luoyang rainfall data from 1951 to 2011, this paper discussed the distribution characteristics of rainfall in the whole year. It analyzed summer maize growth period with the coupling of water consumption. It set up the estimation model of summer maize water consumption, the mathematical model of yield and water relationship, and then analyzed its mutual relations. The experimental results showed that the water requirement and rainfall distribution would fit well during summer maize growth. But summer maize growth stage should be irrigated suitably in the dry and median water year.
Annual Analysis of Erosion Situation of Hearth in 1000m3 Blast Furnace
Authors: Zhang Liu Yu , Xia Shi Tong , Wang Chong Peng , Gui Xue Feng , Zhu Qian Fu
Published: March 2015

For prolonging the campaign of hearth in a 1000 m3 Blast Furnace, a mathematical model is developed to compute the erosion situation of the hearth. With the model, the position of erosion line is calculated from Sep. 2011 to Apr. 2013. It is found that the dead-man zone of the hearth is eroded, and that upper the iron notch level is covered by slag.
Difficulties and Countermeasures Research on Development of Marine Carbonate Gas Reservoir - Taking Sichuan Basin for Example
Authors: Zhang Xu , Liu Wei Hua , Yue Yi Xing
Published: March 2015

The Proved, Probable and Possible Reserves of a gas reservoir in Sichuan Basin is more than 400 billion cubic meter. It has very good prospects for development. In this paper, a preliminary discussion was taken on countermeasures of gas reservoir basing on analysis of the main geological properties and challenges of the development of the gas reservoir. This study proposed to strengthen the comprehensive geological study of the gas reservoir and resource base to increase the single well productivity and decrease the cost. The existing achievements must be combined with self-dependent innovation to form the right technologies of development quickly by investigation study and pilot test to help the gas reservoir develop fast, efficiently and safely.
A Comparative Analysis between Coal-Bed Methane and Shale Gas in China Based on Cases
Authors: Xia Liang Yu , Wen Jing Yi
Published: March 2015

Owing to the growing gap of natural gas between supply and demand in China, the unconventional natural gas, including coal-bed methane (CBM) and shale gas, has been considered as strategic energy sources. An assessment by China’s Ministry of Land and Resources (MLR) announced that China has potentially resources of 36.7 trillion cubic meters of CBM and 25 trillion cubic meters of shale gas, larger than those of the U.S. Controversial views about their commercial prospects and priorities in order are available. This research aims at exploring which is more economically viable and worth the priority. A cost-benefit analysis (CBA) based on average single well data is employed to carry out a comparative analysis between two typical fields, the coal-bed methane (CBM) fields in the Qinshui basin and the shale gas fields in Sichuan basin. The net present value (NPV), the internal rate of return (IRR) and the payback period are used as indicators in this analysis. The results indicate that CBM is superior to shale gas in viability under the current technological and economic conditions, and the future of the CBM industry is clearer than that of the shale gas industry, but the latter is still promising if the drilling costs can be reduced significantly with technical progress. We suggest that the CBM industry should be given the priority to, and the policy for shale gas should focus on promoting technical innovations.
Analysis of the Physical Characteristics of Coal Reservoir in Hancheng Mining Area, Ordos Basin, China
Authors: Yang Yan Hui , Xu Qi Lu
Published: March 2015

Coalbed methane (CBM) which is a kind of efficient and clean unconventional natural gas will be the alternative energy in the future. The studying degree of predecessor is low to the pore-fracture structures of coal reservoir in Hancheng Mining area, Ordos Basin, China. It has been researched with some tests and the results are as follows: micropore is more, specific surface area is larger, throat radius is lesser, permeability is low, but the pore - fracture is development, phenomenon of mineral filling pore - fracture is widespread, sorting features of throat radius is better. From the point of test results, physical property of coal reservoir in the study area is good,which is suitable for the exploration and development of coalbed methane resources.
Application of Stratal Slicing in Sandbody Interpretation of the Channel
Authors: Shi Ju Ye , Fan Tai Liang , Yu Wen Yi , Yu Dong Fang
Published: March 2015

Stratal Slicing technology is a common method of 3D seismic data interpretation, studying its physiognomy and lithologic characteristics by acquiring variation characteristics of the seismic attributes on the plane. The purpose stratum in the study area is wedged, it is more proper to use stratal slicing than time slicing and horizontal slice. Based on stratal slicing technology, this paper characterizes the Akshabulak formation sedimentary system in block D of South Turgai Basin, Kazakstan. The results show that, making clear of the seismic attributes on behalf of the depositional facies combine with stratal slicing and regional depositional environment can judge that the block D develops fluvial deposit and delta deposit, Another finding is that by using stratal slicing can characterize channel‘s boundary, plane geometry and discontinuity accurately.
Dissolution Phenomenon of Laumontite in the Carboniferous Volcanic Oil and Gas Reservoirs of Santanghu Basin in Xinjiang
Authors: Du He , Wang Wen Guang , Liu Cheng Zhi , Ji Jian Fei
Published: March 2015

Based on the data of core, thin section, scanning electron microscopy and geochemical analysis.etc, from the dissolution phenomenon of laumontite in the carboniferous volcanic reservoirs of Santanghu Basin,the exploratory study of alkaline diagenesis and the formation mechanism in volcanic reservoir was carried out.
A Analysis on the Importance of Lithium Battery Cooling for Pure Electric Vehicles
Authors: Wang Di
Published: March 2015

Pure lithium-ion batteries for electric vehicles in the course of the temperature rise, not only directly affect the performance and life of the battery, there is a potential safety hazard. In this paper, a pure electric vehicle with a lithium-ion battery pack with no heatsink, through testing and without thermal simulations with a model feasibility analysis.
Recovery Copper from a Complex Copper Sulfide Ore of Yunnan by Using Flotation
Authors: Wang Yi Jie , Wen Shu Ming , Liu Dan , Cui Chuan Fa , Zhang Bin
Published: March 2015

Copper ore is the main mineral for the large deposits. Copper minerals are mostly consisting of chalcopyrite, secondly consisting of bornite, there are traces of processing copper blue and malachite, the mineral is disseminated by coarse granularity. This mineral is easy to processing. Production process was using by the process of grinding-flotation. After grinding fineness, lime dosage, sodium sulfide dosage, collector and frother dosage, were determined by the open test. Closed circuit experiment was conducted by those optimal conditions identified in the above test, the recovery of copper concentrate is 88.38% and the grade of copper concentrate is 14.37%.
A Two-Stage Combination Model for Wind Power Forecasting
Authors: Zhang Jun , Wang Yuan Hao , Li Ying Yi , Guo Feng
Published: March 2015

With the wind farm data from the southeast coast this paper builds a two-stage combination forecasting model of output power based on data preprocessing which include filling up missing data and pre-decomposition. The first stage is a composite prediction of decomposed power sequence in which a time series and optimized BP neural network predict the general trend and the correlation of various factors respectively. The second stage is BP neural network with its input is the results of first stage. The effectiveness and accuracy of the two-stage combination model are verified by comparing the mean square error of the combination model and other models.
Policy Improvement for Ecological Management in China's Industrial Park
Authors: Guo Jing , Ye Jing , Qiao Qi , Yao Yang , Bai Lu
Published: March 2015

Industrial park is a key point for economic progress under the background of realizing ecological civilization development. In the process of industrial park development, ecological management and guidance have important practical significance in changing economic growth mode, promoting green, low carbon and cyclic industry, improving coordination and common development for economy and environment. This paper in-depth analyzes the important role of industrial park and management problems to be solved in terms of current situation. As for the problems, this paper gives the key concerns and practices on the management of industrial park, and then provides feasible safeguard measures for policy adjustment and support to improve the environmental management.
Probe into the Strategies of Regional Energy-Saving and Emission-Reduction Based on the Energy Consumption Structure Evolution
Authors: Niu Xiao Geng , Cao Nan Nan
Published: March 2015

From 1980 to 2012 there were 80% carbon dioxide emission from traditional fossil energy in the world, and the proportion reached 90% in China, which was the top of carbon dioxide emission and energy consumption. In order to release the pressure of short term energy-saving and emission-reduction, as well as implement energy system cleaning in long term, reversing the positive situation of energy structure adjustment and the advancing the continuous evolution of energy consumption structure will be the effective methods. This paper takes Hebei Province and the whole country as the research objects, analyzes the influence of energy consumption structure changes on carbon dioxide emission and the correlation effect between energy consumption structure and carbon dioxide emission intensity by constructing a correlation model between energy consumption structure and carbon dioxide emission intensity, discusses the effective strategies for the regional energy-saving and emission-reduction.
Analysis of Statics and Design of Structur Parameters for a Bionic Robot Hip Joint
Authors: Cui Bing Yan , Chen Li Wen , Wang Zhi Jun , Zhao Yuan Hao , Xian Li Zhan , Jin Zhen Lin
Published: March 2015

The hip joint is one of the body's important joints, most of the lower limb activities of the human body are inseparable from the hip joint, a novel bionic robot hip joint was proposed based on 3-DOF spherical parallel mechanism. The statics performance of the bionic robot hip joint was analyzed, and the structure parameters were designed. First, the static transmission equation of the bionic robot hip joint was established using the principle of virtual works, which simplifies the calculation process of the bionic robot hip joint. Further, using the norm in Matrix theory, the force Jacobian matrix was introduced into the statics performance evaluation index, and the statics performance evaluation index and the global torque performance evaluation index was defined, and the performance atlas of the statics performance evaluation index was plotted at the workspace of the bionic robot hip joint. Moreover the objective optimal function was established basing on the global torque performance evaluation index, and the relation of the objective optimal function and the global torque performance evaluation index were analyzed. By use of fully automatic searching method, the optimal structural parameter ranges of the bionic robot hip joint were obtained. Analysis results show that the bionic robot hip joint has good static transmission performance at initial position, and the static transmission performance is decreased with increasing the workspace. Finally, using a set of optimal structural sizes parameters, a novel bionic robot hip joint was designed, which established the theoretical foundation for the bionic robot design and apply.
Effect on the Reconstruction of Blood Vessel Geometry to the Thresholds Image Intensity Level for Patient Aneurysm
Authors: Mohd Adib Mohd Azrul Hisham , Mohd Hasni Nur Hazreen
Published: March 2015

Thresholding is the greenest and most generally used techniques in image segmentation. This threshold determination can be used to extract various features of the vascular geometry that is used for understanding and analyzing of the image. Our objective is to investigate the influence of the modernization of blood vessel geometry to the threshold image intensity level difference in vessel segmentation. This study included a patient with cerebral aneurysms. We employed three different threshold levels from 200, 400 and 600 in order to determine the influence of the threshold objectively. The flow solution variation on exemplified by wall shear stress (WSS) presents similarity due to the location and magnitude of geometry variation resulting from the different threshold image intensity level and relatively small changes can lead to important dissimilarity in geometry of vessel and flow feature, predominantly in location with an enormous variety of cross sectional area. This is the significance of the understanding of modeling computational simulations of blood flow and can be expressively effected by alterations in geometry different.
Application of Differential Transform Method for Estimating Thermal Cycle Developed in GTA Welding of High Carbon Steel Joints
Authors: Dutta Jaideep , Narendranath S. , Zhilin Aleksandr
Published: March 2015

This article reveals a detailed study of temperature cycle formed during Gas Tungsten Arc welding of high carbon steel (AISI 1090) butt joints. Experimental work has been carried out to estimate the temperature distribution along fusion boundary to longitudinal direction of the weldment by mounting thermocouples on the plate along with Data Acquisition System. Heat flux distribution due to moving point heat source has been demonstrated by implementing Gaussian surface heat flux and Angular Torch model. Cooling rate has predicted by application of Adams cooling rate equation. Conduction-convection phenomena plays dominant role for evaluating heat loss from the weld joint and Differential Transform Method (DTM) has been applied to judge non-dimensional temperature distribution. Analytical studies has shown well agreement with experimental temperature distribution.
An Efficient Sensorless Slip Dependent Thermal Motor Protection Schemes Applied to Submersible Pumps
Authors: Abdelwanis Mohamed I. , Selim Fatallah , El-Sehiemy Ragab Abdel-Aziz
Published: March 2015

This paper proposes a sensorless procedure to estimate the induction motor speed and the dependable heat contents of the stator and rotor sides. The proposed procedure is based on the electrical models of a three phase Induction Motor (IM). The motor electrical models for normal and abnormal will be discussed and a technique is introduced for accommodating frequency dependent skin effect of the rotor resistance using a simple proposed speed estimation algorithm. The electrical models are customized from the positive and negative sequence networks. The speed detection is based on the rotor parameters slip dependent. The models are then used to analyze different operating conditions of the motor. Two thermal motor protection schemes are suggested. The first scheme is dependent on the stator side while the other scheme is developed for rotor side. The Matlab software is used for this purpose to emulate efficiently the proposed estimation procedures through a complete motor modeling which is fed from the power grid. Finally, the results provide the motor performance characteristics which involve current, torque, speed and stator/rotor temperature versus time for numerous operating conditions. It is concluded that the proposed sensorless procedure is efficient to protect the induction motors against abnormal starting as well as the overheating on either stator or rotor sides. Also, the proposed sensorless estimation for speed and temperature is reliable for submersible motor applications. The proposed schemes can be considered as costless preventive maintenance procedure.Index Terms: induction motor, slip dependent, sensorless, thermal model, abnormal operating conditions.
Development and Optimization of Biometal Nanoparticles by Using Mathematical Methodology: A Microbial Approach
Authors: Honary Soheila , Barabadi Hamed , Ebrahimi Pouneh , Naghibi Farzaneh , Alizadeh Ahad
Published: March 2015

This study aimed to biosynthesize and optimize the process of iron oxide nanoparticles producing by Penicilliumwaksmanii isolated from soil by employing mathematical methodology. The synthesized nanoparticles were formed with fairly well-defined dimensions with good monodispersity determined by SEM (Scanning Electron Microscopy), AFM (Atomic Force Microscopy), DLS (Dynamic Light Scattering), UV-Visible spectroscopy, zeta potential, polydispersity index (PDI) and correlogram of nanoparticles. The effects of different factors such as pH, temperature and concentration of FeCl3 on the particle size were investigated by Box-Behnken experimental design. The R2 value was calculated to be 0.9992 indicating the accuracy and ability of the polynomial model.
Prolonged Release and Cytocompatibility on Immortalized Keratinocytes of CoQ10-Loaded Nanostructured Lipid Carrier
Authors: Wang Jian Min , Xia Qiang
Published: March 2015

The objective was to manufacture a nanostructured lipid carrier (NLC) for Coenzyme Q10, and to investigate its prolonged release and cytocompatibility of CoQ10-NLC incubated with HaCaT cells. CoQ10-NLC was prepared by hot high-pressure homogenization technique. The characterization of the CoQ10-NLC was determined by size analysis, polydispersity index (PDI), zeta potential assay, in vitro release and cytocompatibility. To analyze the cytocompatibility of CoQ10-NLC, cell viability was investigated by MTT measurement. Morphology of cells was evaluated by HE staining. Cells were exposed to CoQ10-NLC and nuclear morphology were determined using Hoechst 33342 staining. Time-lapse imaging was used to illustrate the dynamics of cell movements. Release investigation exhibited a prolonged release of CoQ10-NLC. MTT measurement, HE and Hoechst 33342 staining corroborated that CoQ10-NLC possessed good cytocompatibility on HaCaT cells. Observation with time-lapse images further confirmed that CoQ10-NLC showed good cytocompatibility. The results demonstrated that CoQ10-NLC with prolonged release had good cytocompatibility.
Nitrogen-Doped Carbon Nanotubes and Graphene Nanohybrid for Oxygen Reduction Reaction in Acidic, Alkaline and Neutral Solutions
Authors: Liu Ji Yue , Wang Zan , Chen Jing Yan , Wang Xin
Published: March 2015

Nitrogen-doped carbon nanotubes (N-CNTs) have beenprepared on FeNi catalyst by plasma-enhanced chemical vapor deposition in amixture of N2, O2, and CH4. On the opened topof CNT, multi-layer graphene grown self-assembly was observed by transmissionelectron microscopy and high resolution transmission electron microscopy. Thenanohybrid film analyzed by scanning electron microscopy exhibited a porous and3D morphology and pyridinic and graphitic nitrogen structure confirmed by x-rayphotoelectron spectroscopy. Electrochemical measurement indicated that the filmfacilitated about three-electron transferpathway for oxygen reduction reaction in neutral medium and two-electronreductions in both alkaline and acidic solutions.
Effect of Nature of Surfactant on the Formation of β-Ag2Se Nanoparticles and Optical Properties of β-Ag2Se and ZnS/β-Ag2Se Nanocomposite
Authors: Andal V. , Buvaneswari G.
Published: March 2015

Surfactant assisted synthetic route was followed to prepare silver selenide (β-Ag2Se) nanoparticles. The effect of three different surfactants viz., Triton X100, SDS and CTAB in the formation of silver selenide nanoparticles had been examined. Pure and crystalline β-Ag2Se nanophase was obtained in the presence of Triton X100 and SDS. However, the presence of CTAB leads to metallic silver formation. Nano Composite of β-Ag2Se and ZnS was fabricated in the presence of glycine as a molecular linker. The products were characterized by different techniques such as XRD, FT-IR, SEM and TEM. Room temperature photoluminescence spectrum of the ZnS/ β-Ag2Se nanocomposite exhibited two emission peaks at around 286 nm and 392 nm with enhanced intensity (lex= 250 nm).
Strength Calculation of Foam Core Sandwich Composite Ship by FEM
Authors: Zhao Yao , Zhou Wei Xin , Liu Wei Bin , Yi Wen , Gao Chang
Published: March 2015

The foam core sandwich composite ship is a new kind ship using special materials. The advantages include easy molding, short construction period and so on. However, due to the specialty of the material property as well as the complexity of structures, there are element applicability and calculation efficiency problems when conducting FEA (Finite Element Analysis) calculations of the whole ship. Based on experiment and simulation result, a sandwich shell element is found which is equivalent to the solid element of beam and plate. An efficient and practical way is developed using this equivalent shell element to calculate a catamaran including the analysis of the structure responses in different working conditions. This methodology has a great reference value when conducting computer simulation calculation of foam core sandwich composite ships and marine structures.
The Influence of Composite Material’s Constituents on the Stiffness of the 70m Hull
Authors: Bian Wen Feng , Cheng Jie , Liu Yan Lin , Jia Bao Xian
Published: March 2015

It is widely believed that large composite materials are difficult to build a ship which is longer than 40 meters because of lack of structural stiffness. Up to now, the ships, 72-meter in length, made of glass fiber reinforced composite have been in serve abroad, while 35 meters in China. Therefore, it’s absolutely necessary to study the problem about the stiffness of the 70-metre composite materials hulls. Start from integration design and finite element analysis of composite materials and structure, the influences of material component, laminated angle and laminated sequences of composite materials’ hull on the dynamic stiffness and static stiffness of the ship are studied to explore the method of improving stiffness. The result show that, in the conditions of having the same molded surface, ship's weight and applied stress, it can improve the ship’s longitudinal stiffness to reach standard requirements by using the part of the high modulus fiber as well as the high modulus fiber laying on the outboard of the hull.
Interfacial Creep Fracture Behavior of Foam Core Sandwich Composites with Different Resin
Authors: Wang Can , Chen Hao Ran
Published: March 2015

Interfacial creep fracture behavior of sandwich composites consisting of E-glass/ unsaturated polyester (UPE) resin and E-glass/vinyl ester (VE) resin facings over PMI foam core has been experimentally investigated. Digital image correlation (DIC) method was employed in the double cantilever beam (DCB) test to measure the creep displacement field surrounding the crack tip. Crack opening displacements (COD) at various creep time were extracted from the creep displacement field and mode I stress intensity factors were determined using the small region COD-based linear extrapolation method. Significant increments of COD and nominal stress intensity factor are found in specimen with UPE resin and specimen with VE resin after 24 hours creep test. It is also found that specimen with UPE resin has a better interfacial creep fracture resistance than that of specimen with VE resin.
Environmental Corrosion Resistance of Textile Reinforced Composites in Seawater
Authors: Wang Ning Ning , Sun Jia Ying , Zhu Cheng Yan
Published: March 2015

In order to study on mechanical performance as the target of environmental corrosion resistance property, three kinds of glass fiber fabrics like biaxial warp knitted fabric, biaxial stitch-bonded felt and three axial warp knitted fabric were used to prepare textile reinforced composites in five layers laminated structure, which were soaked in seawater environment for 180 days. The result showed that, the surface appearance of textile reinforced composite became muddy and the color became darker, the tensile strength and bending strength of composites decline of the whole with the extension of soak time, the average loss rate of tensile and bending performance are respectively 24.8% and 56.5%, all of these provide the theoretical basis for researching and developing high-quality composite materials.
Interaction of Multiple Cylindrical Cavities and Fixed Surface in Elastic Semi-Space
Authors: Li Hong Liang , Zhang Rui , Zhang Hao
Published: March 2015

In natural medium, engineering materials and structures, it can be found that there are cavities everywhere. Sometimes the surface of the structure is fixed, and it could be seen as a rigid line. When structure is impacted by dynamic load, the scattering field will be produced because of the cavities and the fixed surface, and it could cause dynamic stress concentration at the edge of the cavities. In this paper, the solution of displacement field for elastic semi-space with fixed surface and multiple cylindrical cavities by anti-plane SH-wave is constructed. In complex plane, considering the displacement boundary condition of the fixed surface, the displacement field aroused by the anti-plane SH-wave and the scattering displacement field impacted by the cylindrical cavities comprised of Fourier-Bessel series with undetermined coefficients are constructed. Through applying the method of multi-polar coordinate system, the equations with unknown coefficients can be obtained by using the stress free condition of the cylindrical cavities in the radial direction. According to orthogonality condition for trigonometric function, these equations can be reduced to a series of algebraic equations. Then the value of the unknown coefficients can be obtained by solving these algebraic equations. The total wave displacement field is the superposition of the displacement field aroused by the anti-plane SH-wave and the scattering displacement field. By using the expressions, an example is provided to show the effect of the change of relative location of the cylindrical cavities. Based on this solution, the problem of interaction of multiple cylindrical cavities and a linear crack in semi-space with fixed surface can be investigated further.
Influence of Reinforcement Ratio on Flexural Behavior of Prestressed UHPCC Beam
Authors: Guo Qing Yong , Mao Ji Ze , Han Sang Mook
Published: March 2015

Using experimental study, major emphasis of the present study is to determine the influence of reinforcement ratio on structural behavior of the prestressed beams made of UHPCC in terms of first crack load, peak load, ductility, and load-deflection characteristics. A UHPCC mixing proportion was presented firstly. 8 rectangular beams of size 100x300x3000mm made of UHPCC were designed, fabricated and tested in this investigation. Influence of reinforcement ratio of load bearing capacity, deflection and crack pattern of beams were performed and analyzed. Based on experimental results, some conclusions were drawn.
Effects of Curing Temperature on Glass Fiber/Urethane Composite’s Mechanical and Thermal Properties
Authors: Meng Shan Shan , Zhang Bo Ming
Published: March 2015

Effects of curing temperature on glass fiber/urethane composite’s mechanical and thermal properties were investigated in this paper. L100 and curing agent C3 were mixed sufficiently with the mass ratio of 100:15 at the temperature of about 50°C, and 3 layers of glass fibers with the size of 10cm×30cm (the thickness of each layer is 0.2mm) were prepared. Then glass fabric/L100 polyurethane composites were fabricated by vacuum-assisted hand lay-up process at the temperature of 150°C, 160°C and 170°C, respectively. As the resin system is used in pultrusion process which demands the resin system can cure adequately within 5min to 15 min. The isothermal differential scanning calorimetry (DSC) method was used to investigate the curing time at the above three temperatures to testify whether the resin system can cure during a short span of time to meet the requirement. The results demonstrate that L100/C3 resin system cures within 8-10min at the temperature of 150°C and 160°C, while under 170°C, the resin system cures fully within 5min,which clearly show that the resin system meet the basic requirement of fast process. In order to better analyze the effect of curing temperature on sample’s mechanical properties, corresponding mechanical tests were conducted. The tension tests demonstrate that the tensile strength and elongation at break reduce with the rise of curing temperature. The interface strength test and field emission scanning electron microscope photography were conducted. The results show that higher curing temperature leads to lower interface strength. The decrease of the interface strength is due to the different reactivity of three reactive groups in L100. With the rising of temperature, reactivity groups tend to react with curing agent C3, but not to combine with coupling in the surface of glass fiber, hence weakens the link between resin and fiber. This assumption can be confirmed by the DSC tests, which show that curing temperatures have little effects on glass transition temperature of the samples. Additionally, the infrared spectra of the composites cured at the above three different temperatures indicate that curing temperatures exert no significant influence on the composition of the composites. Based on the above results, 150°C is chosen to be the optimal curing temperature for the glass fabric/L100 polyurethane composites.
The Preparation and Characterization of NiTi/CNT/Polyurethane Composite
Authors: Han Rong , Tian Bing , Wang Yang Hui , Chen Feng , Tong Yun Xiang , Li Li , Zheng Yu Feng
Published: March 2015

The polyurethane matrix composites consisting of CNT and NiTi springs are prepared and the microstructure, mechanical property and damping property of the composites are investigated. It was found that the CNT and NiTi spring exhibit a good interfactial bonding with the matrix. The elastic modulus and tensile strength have been enhanced by the addition of CNT and NiTi spring. The NiTi spring is helpful to increase the recovery strain and enhance the energy absorption of the composites by the pseudoelastic deformation under the large deformation. The NiTi spring can not increase the damping property under low vibration amplitude because the pseudoelastity of the spring is not actuated when the deformation is small.
Preparation and Characterization of In Situ Polymerized Cyclic Butylene Terephthalate and its Composites
Authors: Zhang Lu , Zhou Li Min , Zhang Ji Feng , Yang Bin , Fan Shao Hua
Published: March 2015

A fatal disadvantage of continuously reinforced thermoplastic composites is the high melt viscosity of the matrix which hampers impregnation. However, the melt viscosity of low molecular weight CBT resin can reach extremely low value, which simplifies impregnation and enables the use of thermoset production methods. The thermal analysis, rheological analysis and mechanical property on the polymerization and crystallization of CBT into poly (cyclic butylene terephthalate) (PCBT) at different ratios of catalyst were investigated in this paper. The continuous glass fiber (GF) reinforced PCBT composite with over 70% fiber volume content was prepared via in situ polymerization, and the mechanical property of the PCBT was studied. The best impregnation time was decreased and the degree of crystallinity was increased respectively with catalyst fraction increasing. The tensile/flexural strength and modulus of PCBT resin and GF/PCBT composites were enhanced when the catalyst fraction increased from 0.3% to 0.6%.
Study on the Electrical Properties of CNT/Carbon Fiber Reinforced Composite
Authors: Li Yan , Ma Meng
Published: March 2015

The effects of fiber orientation and volume fraction on electrical conductivity of unidirectional carbon fiber reinforced polymer (CFRP) were investigated. The unidirectional CFRP shows strong anisotropy in electrical properties. Composites with higher fiber volume fraction possess higher electrical conductivity, since the fibers are the only current path in the composites. Additionally, carbon nanotubes (CNTs) were mixed into the resin by high-pressure microfluidizer to improve the electrical properties of the composites. Results show that the electrical conductivity of the polymer matrix has been dramatically improved. The conductivity of CNTs modified CFRP composites is improved along fiber direction, while it remains at the same level in the transverse to fiber direction.
Discovery of isolated populations of Phengaris alcon and of Melitaea diamina in the central Po Plain, Italy (Lepidoptera Rhopalocera)
Authors: Corezzola Serena , Hardersen Sönke , Maffezzoli Lorenzo
Published: March 2015

Riassunto - Scoperta di popolazioni isolate di Phengaris alcon e Melitaea diamina nella Pianura Padana centrale (Italia) (Lepidoptera Rhopalocera). all’interno del Parco del Mincio (Mantova, lombardia) sono state scoperte popolazioni di Melitaea diamina (Lang, 1789) e Phengaris alcon ([Denis & Schiffermueller], 1775) (lepidoptera rhopalocera), rispettivamente nell’anno 2008 e 2010. entrambe le specie non sono note per la Pianura Padana, e le popolazioni più vicine conosciute si trovano a 170 e 50 km, rispettivamente per P. alcon e M. diamina. Durante l’anno 2011 sono state svolte ulteriori indagini su queste nuove popolazioni. entrambe le specie sono state riscontrate esclusivamente in prati umidi, di cui sono considerate specie tipiche. le nuove popolazioni dovranno essere protette, garantendo il mantenimento in futuro dei prati umidi mediante sfalcio.Abstract - Populations of Melitaea diamina (Lang, 1789) and Phengaris alcon ([Denis & Schiffermueller], 1775) (lepidoptera rhopalocera) were discovered in the Mincio natural Park (Mantua province, lombardy) in the years 2008 and 2010, respectively. Both species had not been known from the central Po Plain and the closest populations are approximately 170 km and 50 km away for P. alcon and M. diamina, respectively. More data on the new populations were collected during the year 2011. Both species were exclusively found in wet meadows, for which they are considered typical. The newly discovered populations need to be protected by ensuring that the meadows will continue to be mown in the future.
Una nuova specie di Elateridae della Tailandia: Cryptalaus chiangmaiensis n. sp. (Coleoptera, Elateridae)
Authors: Riese Sergio
Published: March 2015

Riassunto - L’autore descrive una nuova specie di Elateridae della Tailandia: Cryptalaus chiangmaiensis n. sp. (♂♀) di Doi Pui, Chiang Mai. La nuova specie mostra lo stesso habitus di C. beauchenei (Fleutiaux, 1903), ma risulta nettamente distinta da questa per il pronoto e le elitre nere, coperti da una fitta pubescenza bianca a macchie nere. Viceversa il pronoto di C. beauchenei è rosso, munito di pubescenza breve e rada, le elitre sono nere e coperte da pubescenza nera e sparsa intercalata da tre bande trasversali di pubescenza bianca e fitta.Abstract - A new species of Elateridae from Thailand: Cryptalaus chiangmaiensis n. sp. (Coleoptera: Elateridae). A new species of click beetle from Thailand is described: Cryptalaus chiangmaiensis n. sp. (♂♀), loc. typ.: Thailand, Doi Pui, Chiang Mai. it shows the same habitus of C. beauchenei (Fleutiaux, 1903), but from the latter is markedly distinct for the pronotum and elitrae black, co- vered by a white pubescence with some black spots, while the pronotum of C. beauchenei is red, not covered by a very fine pubescence, and elitrae are black, with sparse black pubescence and with three only transversal bands of white pubescence.
Descrizione di una nuova specie di Aphanobius della penisola Indomalese: Aphanobius gudenzii n. sp. (Coleoptera, Elateridae, Ludiinae)
Authors: Riese Sergio
Published: March 2015

Viene descritta una nuova specie di Elateridae della penisola Indomalese: Aphanobius gudenzii n. sp. (♂, ♀) (Coleoptera: Elateridae, Ludiinae), loc. typ.: W. Malaysia, Pahang, 20 Km SW Kuala Rompin, - endau Rompin N. P. – 600 m. (kg tebu Hitam) G. Beremnbam 23 – IV/3 . V 2009 P. Ceckovsky legit. Presenta lo stesso habitus dell’A. cylindricus Candéze, ma è facilmente distinguibile per la maggior lunghezza delle antenne.
Die Arten der Gattung Cephennium Müller & Kunze, 1822 (Coleoptera, Staphylinidae, Scydmaeninae) aus der Provinz Verona (Italien)
Authors: Meybohm Heinrich , Zanetti Adriano
Published: March 2015

The species of the genus Cephennium Müller & Kunze, 1822 (Coleoptera, Staphylinidae, Scydmaeninae) in the province of Verona (Italy).Five species of the genus Cephennium are recorded from the North Italian province Verona. Four species belong to the subgenus Cephennium s.str.: Cephennium (Cephennium) jureceki Machulka, 1930; Cephennium (Cephennium) rossii Castellini, 2011; Cephennium (Cephennium) lessinicum nov. spec.; Cephennium (Cephennium) settei nov. spec.. one species belongs to the subgenus Neocephennium Apfelbeck, 1911: Cephennium (Neocephennium) punctatum nov. spec.. the new species are described and illustrations are given to all five species. An identification table for the four species of the subgenus Cephennium s.str. is provided.
Modeling Discrete Survival Time Using Genomic Feature Data
Authors: Ferber Kyle , Archer Kellie J.
Published: March 2015

Researchers have recently shown that penalized models perform well when applied to high-throughput genomic data. Previous researchers introduced the generalized monotone incremental forward stagewise (GMIFS) method for fitting overparameterized logistic regression models. The GMIFS method was subsequently extended by others for fitting several different logit link ordinal response models to high-throughput genomic data. In this study, we further extended the GMIFS method for ordinal response modeling using a complementary log-log link, which allows one to model discrete survival data. We applied our extension to a publicly available microarray gene expression dataset (GSE53733) with a discrete survival outcome. The dataset included 70 primary glioblastoma samples from patients of the German Glioma Network with long-, intermediate-, and short-term overall survival. We tested the performance of our method by examining the prediction accuracy of the fitted model. The method has been implemented as an addition to the ordinalgmifs package in the R programming environment.
Sur les algèbres de Lie associées à une connexion
Authors: Randriambololondrantomalala Princy , Ravelonirina H. S. G. , Anona F. M.
Published: March 2015

Etant donné une connexion Γ sur une variété differéntiable M, dans ce papier on se propose de donner quelques propriétés de Γ en étudiant les algèbres de Lie associées à cette connexion. En particulier, on calcule le premier espace de cohomologie de Chevalley–Eilenberg de la partie horizontale de l’algèbre de Lie des champs de vecteurs sur le ûbré tangent de M dont la dérivée de Lie correspondante de Γ est nulle, et de l’espace de nullité horizontal de la courbure.
Асимптотика решения интегрального уравнения Вольтерра с разностным ядром
Authors: Lobanova M S , Tsalyuk Zinovii Borisovich
Published: March 2015

Рассматривается асимптотика решения интегрального
уравнения Вольтерра с разностным ядром, в случае,
когда свободный член имеет экспоненциальный рост.
Библиография: 1 название.
Об устранимых особенностях отображений, рост которых ограничен некоторой функцией
Authors: Sevost'yanov Evgenii Aleksandrovich
Published: March 2015

В настоящей работе исследованы вопросы, связанные
с локальным поведением дифференцируемых почти всюду отображений,
обладающих $N$-, $N^{-1}$-, $ACP$-, и $ACP^{-1}$-свойствами,
характеристика квазиконформности которых удовлетворяет
определенным условиям на рост. Показано, что, если отображение
такого типа растет в окрестности изолированной точки границы
не быстрее некоторой функции радиуса шара, то эта точка является
устранимой особой точкой отображения, либо полюсом.
Библиография: 18 названий.
Одна теорема единственности аддитивных функций и ее приложения к некоторым ортогональным рядам
Authors: Kerian Karen Aleksandrovich
Published: March 2015

В работе исследуется вопрос восстановления
определенной на $\mathcal P$-ичных параллелепипедах
аддитивной функции по ее производной
по $\mathcal P$-ичным параллелепипедам.
Полученная теорема применена к вопросам единственности
кратных рядов по системам Хаара и Прайса.
Библиография: 13 названий.
Самосопряженные коммутирующие дифференциальные операторы ранга два и их деформации, заданные солитонными уравнениями
Authors: Davletshina Valentina Nikolaevna
Published: March 2015

В этой работе мы изучаем деформации коммутативных колец
самосопряженных обыкновенных дифференциальных операторов ранга два,
заданные солитонными уравнениями.
Библиография: 22 названий.
Оценки $L^p$-осцилляций функций при $p>0$
Authors: Krotov Veniamin Grigoryevich , Porabkovich Andrei Ivanovich
Published: March 2015

В работе доказывается ряд неравенств для средних осцилляций
$$
\mathcal{O}_{\theta}(f,B,I)=(\frac{1}{\mu(B)}
\int_B |f(y)-I|^\theta d\mu(y))^{1/\theta},
$$
где $\theta>0$, $B$ - шар в метрическом пространстве
с мерой $\mu$, удовлетворяющей условию удвоения,
число $I$ выбирается одним из следующих способов: $I=f(x)$
($x\in B$), $I$ - среднее значение функции $f$ по шару $B$,
$I$ - наилучшее приближение $f$
постоянными в метрике $L^{\theta}(B)$.
Эти неравенства используются для получения $L^p$-оценок ($p>0$)
максимальных операторов, измеряющих локальную гладкость,
описания пространств соболевского типа и исследования
свойства самоулучшения неравенств типа Пуанкаре-Соболева.
Библиография: 17 названий.
К критерию конформной параболичности риманова многообразия
Authors: Keselman Vladimir Mikhailovich
Published: March 2015

Работа относится к кругу вопросов, касающихся связи конформного типа риманова многообразия
и канонического вида его изопериметрической функции. В ней построены два специальных примера двумерных многообразий, разъясняющие смысл, роль и необходимость требований, которые присутствуют в полученном автором ранее критерии конформной параболичности некомпактного $n$-мерного риманова многообразия.
Библиография: 8 названий.
Clinical Evaluation of Gutkha chewing and Pattern of Bone Loss in Periodontitis
Authors: Chaudhari Harshal Liladhar , Ashok Nipun , Kalburgi Veena , Jenifer Haziel Dina
Published: March 2015

Introduction

Tobacco in the form of Gutkha is commonly used in India. The present study was done to analyze the extent and pattern of alveolar bone loss (ABL) among gutkha chewers who were having chronic periodontitis.

Materials and methods

A total of 55 habitual gutkha chewers within the age range of 18 to 35 years with chronic periodontitis, who were otherwise healthy were recruited for the study. Fourteen full mouth intraoral periapical (IOPA) radiographs were taken for each individual (a total of 770 radiographs) with the help of radiovisiography. Kodak dental software was used to analyze and measure the alveolar bone loss at each proximal site and data were computed as percentage alveolar bone loss.

Results

Almost all the subjects had poor oral hygiene status. Clinical parameters of periodontal examination represented by clinical attachment level, probing depth, gingival bleeding index had positive correlation with frequency and duration of gutkha chewing. The study population had a mean alveolar bone loss of 17%. Mean bone loss was more severe in mandible 18.3% ± 2.6, when compared with maxillary arch 15.7% ± 3.7.

Conclusion

Maximum bone loss was observed with molars and incisors. Alveolar bone loss was more frequently found in mandibular arch as compared to maxillary arch.

How to cite this article

Warad S, Chaudhari HL, Ashok N, Kalburgi V, Kalburgi NB, Jenifer HD. Clinical Evaluation of Gutkha chewing and Pattern of Bone Loss in Periodontitis. World J Dent 2014;5(4):199-203.
Psychological Intervention in Head and Neck Cancer from Molecular Standpoint
Authors: Anand Rahul , Rao Roopa
Published: March 2015

Treatment of head and neck cancer (HNC) can cause significant physical and social-emotional trauma to the patient with an increased risk of suicide compared to other cancer patients. Despite having the knowledge about the stress influences on cancer relevant biological processes and psychological intervention, it is not being studied and practiced routinely. We recommend that psychosocial interventions should be routinely practiced as one of the adjuvant treatment modalities for the benefit of HNC patients which can decrease psychological distress and improve social functioning and quality of life (QoL).

How to cite this article

Sarode GS, Sarode SC, Anand R, Patil S, Rao R, Augustine D. Psychological Intervention in Head and Neck Cancer from Molecular Standpoint. World J Dent 2014;5(4):249-250.