bluuebunny/crossref_metadata_2025 huggingface dataset:
Patient Compliance With Postoperative Lower Extremity Touch-down Weight-bearing Orders at a Level I Academic Trauma Center
Authors: Ruiz Ferrin K. , Fu Michael C. , Bohl Daniel D. , Hustedt Joshua W. , Baumgaertner Michael R. , Leslie Michael P. , Grauer Jonathan N.
Published: June 2014

After lower extremity fracture or surgery, physicians often prescribe limited weight bearing. The current study was performed to evaluate teaching and compliance of touch-down weight bearing (defined as 25 lb) at a level I academic trauma center. A survey was distributed to physical therapists (PTs) from the orthopedic ward to gauge their training methods and their confidence in patients’ ability to comply. Patients with recommended touch-down weight bearing were then evaluated on the day of discharge and again at their first follow-up appointment using the SmartStep weight-bearing measurement device (Andante Medical Devices, Inc, White Plains, New York). Fifteen PTs completed the survey (average of 14 years in practice). Inconsistency was observed in weight-bearing teaching methods: verbal cues were used 87% of the time, tactile methods were used 41%, demonstration was used 23%, and a scale was used only 1%. Limited confidence was found in the instruction efficacy by those surveyed. Twenty-one patients were seen the day of discharge and 18 of those were seen at first follow-up. At discharge, average minimum and maximum weight bearing were 3.2 and 30.2 lb, respectively. Only 31% of steps were within an acceptable range of 15 to 35 lb. At first follow-up, average minimum and maximum weight bearing were 12.2 and 50.8 lb, respectively. Only 27% of steps were within the acceptable range. The majority of steps were less than the prescribed weight at discharge, whereas the majority of steps were greater than the prescribed weight at first follow-up. These data suggest that more uniform and effective teaching methods for prescribed weight-bearing orders are warranted assuming compliance is an important clinical objective.
Timing of Forearm Arterial Repair in the Well-perfused Limb
Authors: Park Min Jung , Gans Itai , Lin Ines , Levin Lawrence Scott , Bozentka David , Steinberg David
Published: June 2014

The purpose of this study was to evaluate the difference in the outcomes of patients with a well-perfused hand who were taken to the operating room (OR) within 6 hours of forearm arterial injury vs patients who were treated in a semiurgent fashion. A review of 201 consecutive patients who were taken to the OR with forearm-level radial or ulnar arterial injury identified 26 patients who had a well-perfused hand at presentation in whom hemostasis was achieved within 15 minutes with manual pressure and no signs of hemodynamic instability. Outcomes of interest included short-version Disabilities of the Arm, Shoulder and Hand (quickDASH) scores and patient-reported cold intolerance. Of the 26 patients, group 1 included 17 patients who were taken to the OR within 6 hours and group 2 included 9 patients who were taken to the OR in a delayed fashion. Minimum follow-up in both groups was 13 months. Average quickDASH score was 24.5 and 14.1 for groups 1 and 2, respectively. Average time spent in the OR was significantly less in group 2 compared with group 1 (1.7 vs 2.8 hours). In the setting of forearm arterial injury with a well-perfused distal limb, there was no difference in functional outcome in patients taken to the OR emergently compared with those who underwent surgery in a delayed manner. With careful evaluation and monitoring, semiurgent operative repair is feasible and may improve certain aspects of patient care and hospital resource use. Outcome measures in this study support semiurgent treatment of these injuries.
Arthroscopic Retrograde Osteochondral Autologous Transplantation to Chondral Lesion in Femoral Head
Authors: Cetinkaya Sarper , Toker Berkin , Taser Omer
Published: June 2014

This report describes the treatment of 2 cases of full-thickness cartilage defect of the femoral head. The authors performed osteochondral autologous transplantation with a different technique that has not been reported to date. One patient was 37 years old, and the other was 42 years old. Both presented with hip pain. In both patients, radiograph and magnetic resonance imaging scan showed a focal chondral defect on the weight-bearing area of the femoral head and acetabular impingement. A retrograde osteochondral autologous transplantation technique combined with hip arthroscopy and arthroscopic impingement treatment was performed. After a 2-month recovery period, the symptoms were resolved. In the first year of follow-up, Harris Hip scores improved significantly (case 1, 56.6 to 87.6; case 2, 58.6 to 90). The technique described yielded good short- and midterm clinical and radiologic outcomes. To the authors’ knowledge, this report is the first to describe a retrograde osteochondral transplantation technique performed with hip arthroscopy in the femoral head.
Distal Biceps Rupture: The Coil Sign
Authors: Austin Luke , Pepe Matt , VanBeek Corinne , Tjoumakaris Fotios
Published: June 2014

Delayed repair of the distal biceps brachii tendon can lead to the formation of scar tissue and coiling of the tendon. Dissection of the scar tissue and unraveling of the tendon may allow for anatomic repair to the radial tuberosity. A 50-year-old man had a distal biceps brachii tendon tear with an intact lacertus fibrosis. Surgery was performed 22 days after injury. On inspection, the distal biceps tendon was coiled, encased in scar tissue, and unable to be reduced to the radial tuberosity. Dissection of the scar tissue and unraveling of the tendon provided additional length, allowing anatomic repair. Postoperatively, the patient regained full range of motion and strength and returned to work without restrictions. After a distal biceps brachii tear in which the lacertus fibrosis remains intact, the coiled tendon may become enveloped in a sheath of scar tissue. Dissection of the “pseudosheath” unveils the native tendon and allows reduction to the radial tuberosity. Cadaveric analysis shows that the pseudosheath may conceal 6 cm of coiled tendon. When the lacertus fibrosis remains intact after distal biceps tendon rupture, the tethered tendon stump may coil, become encased in scar tissue, and resemble the native tendon. Failure to identify the native tendon could result in the loss of 6 cm of tendon.
Attitudes of Prejudice as a Predictor of Cultural Competence Among Baccalaureate Nursing Students
Authors: Dunagan Pamela B. , Kimble Laura P. , Gunby Susan Sweat , Andrews Margaret M.
Published: June 2014

The purpose of this study was to explore the relationship between attitudes of prejudice and cultural competence among nursing students. Using a mixed-methods design, a convenience sample of students (
N
= 129) currently enrolled in a baccalaureate nursing program was recruited via Web networking. Data regarding attitudes of prejudice, cultural competence, prior cultural experience, and integration of cultural competence were obtained via a Web-based survey. Multiple linear regression was used to predict cultural knowledge, attitudes, and consciousness. Although all three regression models were statistically significant, the significant predictors varied within each model. Greater prejudice was a significant predictor of less culturally competent attitudes toward providing nursing care. Existing prejudice among nursing students needs to be addressed to help promote positive cultural attitudes and, ultimately, cultural competent nursing care. [
J Nurs Educ.
2014;53(6):320–328.]
El recalce con micropilotes para la conservación de un muro de tierra compactada realizado con la técnica del tapial
Authors: Valverde-Palacios I. , Fuentes R. , Valverde-Espinosa I. , Martín-Morales M. , Santos-Sánchez J.
Published: June 2014

Durante el proceso de ejecución de un aparcamiento público subterráneo en la ciudad de Granada (España) se descubrió una obra de ingeniería hidráulica periurbana de 55 m de longitud con tres tajamares (declarado BIC en el 2007) ligado a la margen izquierda del río Genil. Se detectaron tres fases constructivas, muro monolítico (s. XI), tapia real (s. XII-XIII) y una reparación posterior (s. XIX) a base de cajones de mampostería con machones e hiladas de ladrillo. Para la conservación de este elemento en su posición original se ejecutaron: micropilotes verticales en su perímetro; otros horizontales en su base; viga riostra de encepado y bulones con barra Gewi pasantes a la viga de arriostramiento. Durante la excavación, se ejecutó un entramado de perfiles metálicos laminados «L» soldados entre sí y a los micropilotes. El elemento está totalmente integrado en la obra subterránea y en el entorno del Paseo del Violón.
Why do People Continue to Play Social Network Game (SNG)?
Authors: Lin Tzu-Hong , Lu Hsi-Peng , Hsu Huei-Hsia , Hsing San-San , Ho Tai-Li
Published: June 2014

This study proposes a model constructed by affection perspective (PA theory) and social perspective to examine the determining factors of social network game (SNG) players' intentions on word-of-mouth and continue. Total 276 subjects were conducted to test this model. The results demonstrate that interstate of arousal leads people to a higher level of continuing to use on SNG. Moreover, word-of-mouth had significant impact on continue to use, which showed that the impact of the dimension of continue to use on the word-of-mouth. It was found that sharing was a key factor on determining a player's intentions to word-of-mouth and continuous use on social network game. Through the increasing stickiness and word-of-mouth for SNG, the games providers could create the higher value from loyal customers. This paper contributes to an insight of the effects of players' intentions on word-of-mouth and continuance to use on SNG.
Consumers' Perceptions towards E-Shopping Advertisements and Promotional Actions in Social Networking Sites
Authors: Saprikis Vaggelis
Published: June 2014

Social Networking Sites (SNS) have dramatically changed our daily lives and even more individuals spend many hours every day utilize them. Their global reach and the opportunity for personalization have also captured the attention of firms, as they create enterprising opportunities for both e-business and traditional companies. For advertisers and marketing practitioners, SNS present myriad opportunities to engage customers, release product information and provide resources for an opt-in interactive environment. Thus, an understanding of SNS can be a significant aid to firms as they develop marketing, advertising and other information disseminating strategies. The scope of this paper is to provide a much clearer view of SNS regarding their members' attitude towards the provided e-shopping advertisements and promotional actions. The study analyzes and presents internet users' perceptions towards them and how they affect e-consumer behavior. It also intends to reveal possible differences between adopters and non-adopters of online shopping, as well as discrepancies between low and heavy SNS users focusing on university students' perceptions. The research results provide interesting insights to both academia and industry.
Orthogonal Experimental Study on the Mixing Proportion of Reactive Powder Concrete
Authors: Ren Xing Tao , She Xiao , Lu Ke , Zhu Jin Cai , Wang Wan Peng
Published: June 2014

According to the principle of Preparation about Reactive powder concrete (RPC),selection of local raw materials,the use of orthogonal experimental design method,carried out research of RPC mixing proportion design. Finally get the RPC optimal mix of meeting engineering requirement. By the range analysis and variance analysis of the test data of mix,obtained the influence law about water-cement ratio,steel fiber content, sand type,curing regime on compressive strength and splitting tensile strength .
Application of High Styrene Rubber Materials on Improved Tennis Performance
Authors: Zhao Zhi Qiang , Zhuang Hong Mei , Zhang Lei , Miao Xiao Liang
Published: June 2014

High styrene is the copolymer of high content styrene and butadiene, non polar polymers. It performances flexibility and elasticity at high temperature, can mold process. It has better compatibility with natural rubber. In the role of sulfur vulcanizing agent, can produce vulcanization, realize crossing. Tennis prepared by optimization formulation of high styrene has excellent performance, high strength, good elasticity and production and use value.
Application of Green Packaging Material with a Necessary Analysis on the Packaging Design
Authors: Ouyang He Zi
Published: June 2014

Green packaging has become an international trend This article analyzes the necessity of the packaging design by using the green packaging material on the ground of the present situation of the polluted environment by the waste of packaging material, the development trend of green packaging material , the classification of green packaging materials and the green packaging design.
Effects of the Binders on the Storage Stability of the Silicon Delay Composition
Authors: Han Ti Fei , Yan Shi Long
Published: June 2014

To study effects of binders on storage stability of the silicon delay composition, sample B and C1 were prepared separately by adding shellac and fluororubber(FPM2602) in basic formula A, and sample C2 and C3 were prepared by changing adding amounts and modes of fluororubber respectively. On conditions of 71°C and 92% humidity variation rule of burning rate and delay precision varying with time was studied. The results indicate that binders have function of “heat sink”, and reduce burning rate and delay precision of the delay composition, especially the effects of shellac are obvious. Under two kinds of storage conditions, sample B adding with shellac can obviously improve agents influenced by temperature and humidity. Increasing fluororubber contents the delay composition can also be improved influenced by temperature and humidity. Binders at constant amounts, fluororubber solution in adding directly to the composition in mixing process can improve the delay precision.
Study on Region Energy Allocation under Carbon Emission Constraints: Base on Analysis of Carbon Pinch
Authors: Yu Hong , Wang Jun Feng , Hu Lei
Published: June 2014

Energy Supply and demand, and carbon emission constraints are the problems that must be considered in the process of rapid economic development by national and every province. Under the constraints of energy supply and demand, and carbon emissions, there has practical significance to rational allocate regional energy utilization. With carbon pinch method, this paper research the energy allocation of Tianjin, establish analysis model. Considering the overall and regional energy demand and carbon emission constraints, to determine the usage amount of every kind of fossil energy and clean energy, in order to achieve the best energy structure and optimal balance between energy supply and demand. To provide scientific evidence for local government to make reasonable energy supply and carbon emission constraint index.
Research on Energy Saving of Appliances with Evaluation Method and Application of Appliances Green Degree Based on Fuzzy-EAHP
Authors: Wang Jian Lin , Ma Ru Hong , Dong Xiao Hui
Published: June 2014

Based on the characteristics of green appliances, the green degree evaluation index system is established from environment,resources,energy,economic,technology and society six areas. Fuzzy-EAHP applies the extension analytic hierarchy process (EAHP) to determine index weight of different levels. EAHP, which is more accurate and more objective than the traditional AHP, can quantitatively show the relative important degree between indexes with the extension interval number. Building the Mathematical model of three-lever fuzzy comprehensive evaluation, the first process comprehensive evaluation result is as input data of the latter process. At last, Fuzzy-EAHP is used to synthetically evaluate the green degree of four refrigerators.
Key words: Extension analytic hierarchy process (EAHP); Green degree; Green appliance
Analysis of the Influence Factors of Energy Consumption in Pharmaceutical Industry
Authors: Li Xin , Jia Rui Ying , Niu Run Ping
Published: June 2014

Abstract.
Influence factors of energy consumption of air conditioning system in pharmaceutical industry had a perplexing relationship. The impact of energy consumption would have certain difference under different boundary conditions. The single factor analysis of energy consumption on the clean air conditioning system can not accurately reflect the significant level. Therefore, in the paper, orthogonal test and variance analysis method were adopt to determine the relationship between primary and secondary influence factors from ten major influencing factors on the clean air conditioning system in pharmaceutical industry which can guide the research on energy consumption.
Research on Energy Saving Diagnosis of Clean Air Conditioning System in Pharmaceutical Industry
Authors: Li Xin , Jia Rui Ying , Niu Run Ping
Published: June 2014

The purpose of building energy efficiency diagnosis was to find out the problems existing in the process of using energy and analysis the potential of energy saving to guide the owner who should improve the building energy efficiency as far as possible to reduce building energy consumption. This paper involves only the research on energy saving diagnosis of clean air conditioning system in pharmaceutical industry.
Shallow Geothermal Energy in the Application of Building Energy Saving in Shijiazhuang
Authors: Tan Li Li , Huo Peng
Published: June 2014

In recent years,with the low carbon environmental protection consciousness into the social and economic,shallow geothermal energy which is one of the clean energy of is applied widely.This paper states the conditions of resource utilization and collecting technology in Shijiazhuang.It also states the present development situation and the application examples of Shallow Geothermal Energy heat source heating (cold) system , which can provide beneficial reference data.
Research on Electric Power with Development and Application of Line Loss Rate Forecasting Software Based on MLRM-GM
Authors: Liu Wei Dong , Zeng Ting Jian , Jun Tong , Shang Guan Lin Lin , Li Bing Jie
Published: June 2014

A hybrid model is proposed which is a combination of MLRM (Multiple Linear Regression Model) and GM (Gray Prediction Model). The paper conducts a line loss rate forecast of the grid, and develops a kind of forecasting software for the line loss managers of grid enterprises to realize the analysis and forecast of factors which impact the daily loss line rate. Finally, do simulation examples with line loss rate data of a city using the software. The results demonstrate that the models selected in the software have good feasibility in line loss rate forecasting, and can overcome the adverse effects of factors on the model, improve the accuracy of prediction and provide the basis for the scientific and reasonable loss reduction plan.
Analysis on Petrophysical Properties of the Shale Gas Reservoir
Authors: Fu Jian , Tang Xiao Min , Liu Yu Chen
Published: June 2014

As one of the most important means to obtain formation information, logging technology plays an important role in the identification and evaluation of shale gas reservoirs. This paper describs the formation mechanism and influential factors of shale gas reservoir storage characteristics from mineral composition and pore structure,etc. and discusses method for evaluating the TOC.
Study on Influencing Factors of Thermal Analysis Experiment on Coal Oxidation and Spontaneous Combustibility
Authors: Yang Hua , Wang Kai , Zhang Yan Ni
Published: June 2014

To ensure the accuracy and stability of results of coal oxidation and spontaneous combustion in the process of thermal analysis experiment, the speed and time of coal oxidation must be moderate, and the characteristic parameters in the oxidation process can be fully reflected. Thermal analysis experiment at different heating rates, with several particle sizes and different sample quality, Huangling coal sample as the research object, were carried out in this paper. Results showed that the particle size of 0.075 mm to 0.109 mm, sample quality of 5 mg and the heating rate of 10 K•min-1 could ensure the fully oxidation and pyrolysis of coal, under which conditions coal spontaneous combustion characteristics could be reflected by the characteristic temperatures.
Environmental Research on the Effects of Fenton Reaction Conditions on the Dehydration Properties of Lake Dongting Mud
Authors: Fang Shen Zhu , Hao Ting , Huang Shan , Wu Yan
Published: June 2014

Alternative conditioning of gel-like dredged sludge using Fenton reagent (H2O2/Fe2+) was examined in this study. Specific resistance to filtration (SRF) was used to evaluate sludge dewaterability.The optimization of the major operational parameters such as the dosage of H2O2 and Fe2+and the reaction temperature and time had been considered.The results demonstrate that Fenton oxidation conditioning was a practical and feasible method to the super water retention sludge. The optimum values for H2O2 , Fe2+and pH are 50 mg g-1 DS-1(dry solids), 6.25 mg g-1 DS-1 and 6, respectively, at which the SRF reduction efficiency of 76.09% can be achieved at room temperature of 5 min reaction time, which leading to big flocs or particles into smaller ones.
Optimization of Coagulation Process for Disperse Navy Blue Dye Wastewater Treatment Using Response Surface Methodology
Authors: Li Ming , Yu Yan Zhen , Yan Guang Yong
Published: June 2014

A response surface methodology (RSM) was used for the determination of optimum coagulation process conditions for disperse navy blue dye wastewater treatment. The experimental design was Box-Behnken design (BBD) with three operational variables: coagulant dosage, pH value and settling time. The influence of these three independent variables on the chroma removal was evaluated using a second-order polynomial multiple regression model. Quadratic model was predicted for the response variable and the maximum model-predicted chroma removal efficiency was 95%. Based on surface and contour plots, the optimum conditions were obtained to be coagulant dosage of 70.98 mg/L, pH value of 7.46, and settling time of 15.80 min with the actual chroma removal efficiency as 93%.
Treating Disperse Dye Wastewater with Organic Clay
Authors: Wang Li Xuan , Cheng Yan Kun , Huo Peng , Gao Ya Nan
Published: June 2014

The adsorption of disperse dye wastewater with organic clay by static tests is studied, Meanwhile, the composition of wastewater is analyzed by means of FT-IR,and organic clay is analyzed by means of XRD. The effect of pH , dosing quantity and concentration of wastewater on the efficiency of adsorption has been studied, and the relationship between the equilibrium concentration and adsorption capacity is concluded. In the end, the adsorption mechanism is preliminary discussed.
Excess Heat Measurement and Transmutation Study of Pd Wires after Lasers Stimulation in a D2 Gas-Loading System
Authors: Wang Xing Ye , Shen Bing Jun , Jin Li Hong , Zhao Xin Le , Wang Hong Yu , Lu Xin , Li Ling Yu , Tian Jian
Published: June 2014

This study involves excess heat generation stimulated by Argon-ion (λ = 488, 514 nm) and infrared (λ = 1037, 1560 nm) lasers in a D/Pd gas-loading system. The deuteron loading ratios of palladium deuterides ranged from 0 to 0.76. The results showed that more excess heat was produced in the system triggered by a shorter wavelength (λ = 488 nm) laser than the other wavelengths’. Some new elements, such as Ag, Ca and some others, are found by SEM and EDS on the surface of palladium samples after being triggered by the lasers. It implied that some nuclear transmutation processes might happen in the experiment.
Gas Generation Regularities of Dissipated Soluble Organic Matter in Sichuan Basin
Authors: Xue Hai Tao , Mu Guo Dong , Tian Shan Si , Lu Shuang Fang
Published: June 2014

The organic matter of marine strata has high degree of thermal evolution in Sichuan Basin. The gas generation ability of kerogen is very limited, which mainly relies on the soluble organic matter as gas parent material to provide gas source for gas reservoir. In this paper, chemical kinetics method and experiments are applied to study on the history of gas generation and gas generation rate of organic matter in Sichuan marine strata. Result shows that dissipated soluble organic matter in source rocks, dissipated soluble organic matter out of source rocks and organic matter in paleo-reservoir successively generate gas in proper order. Dissipated soluble organic matter out of source rocks and the oil in paleo-reservoir belong to late gas generation.
Optimization of Control and Combustion on a 330MW Face-Fired Boiler
Authors: Zhang Qing Feng
Published: June 2014

A pair of contradictory problems of unstable combustion at low load and serious slagging near the burners, appear on a 330MW boiler made by Babocock. By diagnosis from aspects of the distributed control system (DCS) control logics and the boiler operation modes, it is found that the root cause is the coarse controlling of primary air (PA) flow which is caused by improper measure or calculation logical blocks of DCS. These improper DCS control logics are corrected. The PA flow rates are calibrated by tests in order to get precise coefficients for the new logic. The combustion mode, the control curves of the primary air pressure and the secondary air pressure are optimally adjusted at last. As a result, the boiler efficiency increases by 0.75%, the power consumption rate decreases by 0.2%, the NOx emission concentration reduce to half.
Analysis of Typical Driving Condition Test and Control Strategies Based on Toyota Prius
Authors: Sun Yuan Tao , Zhang Jin Zhu , Wang Yun Long , Fan De Hui , Zhu Rong Fu
Published: June 2014

To study control strategies of combined hybrid electric vehicle, the paper does some working conditions Toyota Prius car such as starting, acceleration and uniform speed using testing instruments. The relation curves between speed of rotation, output moment of torque, speed of rotation of engine and time were obtained when power battery was in high SOC condition and low SOC condition about generator and electric motor. This relation curves can be useful to analyze control strategies of the combined hybrid system in some different conditions.
Composition Limy Binder with the Use of the Synthesized Aluminosilicates for Dry Construction Blends
Authors: Loganina Valentina , Makarova Ludmila V. , Tarasov Roman V. , Sadovnikova Marija A.
Published: June 2014

One of the perspective directions is the use the composite binder, containing nanostructuring additives, in the formulation of dry construction blends. The consolidation about the composition and properties of additives based on the synthesized aluminosilicates, intended for finishing limy dry construction blends are provided in work. It is established that the synthesized aluminosilicates are characterized by high activity of interaction of the additive with a lime. The influence of the additive on durability of a limy composite is shown. It is revealed that composition binder, consisting of a slaked lime and a synthesized zeolites possesses the larger water resistance in comparison with a slaked lime.
Study on Water Engineering with Hydromechanics and the Bubble Float Flow Measuring Method
Authors: Li Ao Dian , Wang Hai Hua
Published: June 2014

The state of bubbles moving in water is a complicated process, during the rising process of the bubble, their shapes, flow and temperature state of the water will have a certain impact on their movement. The impacts of relevant factors are analyzed in this paper. Combined with experiments of bubbles moving in still water and moving water, velocity and temperature sensibility of the bubble are analyzed. Meanwhile, based on the summarizing the regularity of the bubbles rising. Theoretical guidance are provided to the new method of bubbles float measuring method.
Analytic Study of Structural Stability at High Temperature of Structural Beam Made of SM 400
Authors: Kwon In Kyu
Published: June 2014

A fire occurred in the steel framed building could be yielded an unexpected disasters including loss of human lives and damages of properties. Therefore, to evade the tragedies from the building, fire resistance performance of structural elements is required and specified into each nation’s building regulation. Especially, the structural beam plays a key role to transfer the load applied on the floor to column. In this study, to estimate the fire resistance performance of structural beam made of SM 400, analysis using not only mechanical, thermal properties at high temperature of the SM 400 but theories of heat transfer and thermal stress were conducted. The result of this study showed that as the lengths of beam are increased, the structural stability become getting worse. Therefore, it is not recommended to use the same thickness of fire protective materials derived from prototype’s length, 4100 mm to longer beam.
Hydromechanics Analysis and Simulation on Three-Dimensional Flow Field of Marine Propeller
Authors: Zhang Li Tie , Ji Hai Bo , Wang Xiao Xu
Published: June 2014

In this paper, computational fluid dynamics software to simulate three-dimensional flow of marine propeller applications was introduced and described the 3D-CAD model building process, complex moving mesh division methods of the region, three-dimensional rotating turbulence model selection and analysis of the results. Visual image obtained the pressure distribution, flow velocity distribution of the marine propellers, and focused on analyzing the reasons for producing results.
Dynamic Response Analysis of Ocean Drilling Derrick under the Dynamic Load
Authors: Wang Chong , Xu Zhi Jing , Li Xiang , Liu Ge
Published: June 2014

The derrick of a drilling ship is a kind of dynamic ocean derrick which is often applied to drilling operations for ocean engineering. Comparing with land rig derrick, the operating environment of drilling derrick is more complicated with not only the regular functions of static force but also the dynamic loads induced by wind, wave and current. Therefore, this paper takes a drilling derrick as example to make clear of the dynamic characteristics of the drilling derrick under the action of dynamic loads from outside environment with the finite element software ANSYS as tool to accomplish the modal analysis of the drilling derrick. According to the natural frequency and the vibration mode of the drilling derrick after modal analysis, the deformation response and the weak parts of the drilling derrick under different motivation can be predicted, and some improving suggestions can also be illustrated as well. This paper completed the dynamic analysis of the drilling derrick by modal analysis, and moreover, the displacement response and the stress of the drilling derrick varied with time can also be obtained. As consequence, the conclusion can be taken as reference for design of the drilling derrick, safety application and life sustainment.
Research on Gun Dynamic Characteristic under Muzzle Strong Impact
Authors: Di Chang Chun , Qiao Liang , Wang Cong , Lu Fei , Kang Xiao Hui
Published: June 2014

Muzzle strong impact is a new test method of gun firing simulation test method. Based on the virtual prototyping technology, hydraulic simulation technology and rubber tests, gun model, power system model and material model of waveform generator were established. Finally, simulation model of gun firing simulation test machine was obtained. Simulation results indicated that the test machine can simulate the dynamic characteristic of recoil mechanism and load distribution of key components, for example, turret race, trunnion, belt segment, torsional axis and sprocket and so on..
Identification of Soluble Organic Compounds from Shengli Lignite in Toluene/Ethanol Mixed Solvent
Authors: Zhou Jun , Du Xi Hua , Chen Yan , Zong Zhi Min , Wei Xian Yong
Published: June 2014

Shengli lignite (SL) was extracted with toluene/ethanol at the condition of ultrasonic extraction and the dissolved matters was further analyzed with gas chromatography/mass spectrometry (GC/MS). 41 organic compounds (OCs) including aliphatic hydrocarbons, arenes, organoheteratom compounds and organo-silicon compound were detected. The analysis of these high-valued OCs from soluble SL can provide an important theoretical basis for non-fuel of lignite. Keywords: Shengli lignite; ultrasonic extraction; soluble organic compounds; GC/MS analysis
Applied Technology in Image Retrieval via 8-Direction Gaussian Density in the DCT Domain
Authors: Wang Jian Feng , Wu Wen Ming , Zhao Xiao Rong
Published: June 2014

In this paper, A new algorithm for compressed image retrieval is proposed based on Gaussian Density Feature Vector(GDFV). This algorithm directly extract gaussian density of 8 direction from compressed image data to construct a 2-dimention array (8*4) as an indexing key to retrieve images based on their content features. To test and evaluate the proposed algorithms, we carried out experiments with a database of 1000 images. In comparison with existing representative techniques, the experimental results show the superiority of the proposed method in terms of retrieval precision and processing speed.
Research on Applied-Information Technology with Inter-Partition Integration Testing Strategy under IMA Architecture
Authors: Shu Jian , Zheng Chun , Yang Feng Yu , Zheng Wei
Published: June 2014

IMA (Integrated Modular Avionics) system has been widely adopted by a new generation of aircraft. It with high complexity and integration will bring a new challenge in software testing. In this paper, it states what IMA is and how IMA system works. Because of isolation between partitions, the inter-partition communication is required to exchange information between the partitions. It also presents an integrated testing strategy based on UML sequence diagram according to the inter-partition integration of IMA. The method of test sequences generation is discussed emphatically. Finally, a case study is presented to testify the feasibility of our approach.
Research on Information Engineering with Information Technology for E-Learning Based on Face Recognition
Authors: Song Xiao Wei , Zhu Shi , Wei Yuan Wang , Sun Qiao Jie , Zhao Li Qiang
Published: June 2014

As the technology further mature and improvement of social perception, face recognition technology will be applied in more fields. This paper apply the new technology human face recognizing to E-Learning, The realization of this system can make up for the mandatory authentication security deficiencies in the online learning system and effectively solve the student login "imposter" and "desertion" problem in the process of learning.
Research of Engineering Spot Attendance and Employee Information Management Integration System
Authors: Zhang Ling Juan
Published: June 2014

To improve the efficiency of engineering spot attendance and employee management, a novel integrated management system is designed. The system uses a three-tier logical architecture design, which can be divided into user interface layer, business logic layer and data store layer. The realization of information management is based on VB6.0 and ACCESS database programming technology. The development of attendance information gathering functions of engineering spots is based on radio frequency identification technology and non-contact IC card. The separation of business logic and user interface makes the system more security and extensible. Experimental results show that the system has high efficiency, and it has user-friendly, secure and practical advantages.
Research of a Novel Automatic Management System for Material Storages
Authors: Jin Zuo Tao , Wang Yun
Published: June 2014

According to the management efficiency of material storages, a design scheme of automatic management system is designed based on radio frequency identification devices. The hardware platform of the system is realized based on nRF2401 and embedded computer technology. The software design of each subsystem is achieved by using the middleware technology of radio frequency identification devices and embedded software development and database programming technology. The field trial experiments and the laboratory testing results indicate that the system can realize effectively the automatic identification and management of material storages. It can improve the operation efficiency and greatly enhance the automation level of material storages management and save the cost of management.
Applied Technology for Typical Attacks and Security Mechanisms in Wireless Sensor Networks
Authors: Zeng Run
Published: June 2014

Wireless Sensor Networks (WSNs) are used in many applications in military and commercial areas. These applications often include the monitoring of sensitive information such as enemy movement on the battlefield or the location of personnel in a building. However, due to the highly resource constrained in sensor nodes, traditional security strategies always can do few with attacks on WSNs. In this Paper, we proposes a study of attacks and security mechanisms in WSNs. First, we summarize the attacks to WSNs and the security requirements based on the TCP\IP networking model, then we present the security solutions to each attack. Along the way we highlight the advantages and disadvantages of various WSN solutions and further compare and evaluate these solutions.
Information Technology in Multi-Object Tracking Based on Bilateral Structure Tensor Corner Detection for Mutual Occlusion
Authors: Xie Ying Hong , Han Xiao Wei , He You Guo
Published: June 2014

For mutual occlusion problem in multi-object tracking process, a novel tracking algorithm based on bilateral structure tensor corner detection is proposed, which can separate the objects correctly when they experience mutual occlusion. Firstly, it gains the information of each object corners. Secondly, when occlusion occurs, it makes use of K nearest neighbor algorithm combining with the nearest algorithm to classify the corners in occlusion region. Finally, the multi-object tracking algorithm is proposed. The experimental results show that the proposed method can separate the objects correctly and track the objects effectively, when they experience mutual occlusion, even the object changes its motion direction after occlusion.
Design and Implementation of Security Network Optimization
Authors: Yao Wei Wei , Gong Liang , Xu Xia
Published: June 2014

Optimization of computer network security technology shift in the relationship is constantly updated. Any computer network security solutions can not be designed once and for all. How seamless integration of network security technology and network security management together to make the network security implementation strategy is very important, this paper proposes a reasonable solution to improve overall network design and optimization of the security system, to develop scientific, reliable, dynamic network security optimization design, the design of enterprise network security solutions, combined with the current firewall, intrusion detection / intrusion prevention technology, VPN technology to achieve rapid escalation of the enterprise information construction in the network security system, thus the basic realization of computer network security optimization design goal.
The Research Status of the Preparation and Properties of the Tungsten Heavy Alloy
Authors: Fang Xiao Liang , Zhang Wei Fang , Wang Hong Xun
Published: June 2014

Due to the excellent physical and chemical characteristics and mechanical properties of the tungsten heavy alloy (WHA), the WHAs have been widely applied in many areas of the national economy. In this paper, the concept of the WHA is introduced briefly, and the preparation process and properties of the WHAs are summarized. Compared with depleted uranium alloy, the WHA shows broad application prospects in the field of kinetic energy projectile.
The Design of Software Protection Mechanism Based on Virtual Machine
Authors: Hu Si Qi
Published: June 2014

Software security is facing enormous challenges with the rapid development of attacking technology.Obsolete software protection methods can no longer meet the needs of modern software security. In this paper,we proposed a software protection mechanism based on virtual machine which can compile the x86 assembly instructions into virtual instructions.The execution of instructions will be completed in the virtue machine so this mechanism can resist the attack of reverse analysis,meanwhile, the rights of software developers and intellectual property will be protected. furthermore, we design a random instruction generation algorithm to make the code of instructions haphazard, so that the protective ability of VM can be enhanced. We use some experiment to illustrate its superiority and the experimental results indicated that the protective effect of the proposed mechanism is excellent.
Dye-Sensitized Solar Cells Assembled with Modified Photoanode and Carbon Nanotubes as Counter Electrode
Authors: Shi Hai Ying , Tian Jun Qing , Zheng Wei
Published: June 2014

A dye-sensitized TiO2 thin film photoanode and carbon-based counter elctrode were fabricated on the FTO substrate with doctor-blade method. And we have coated the ZnO nanoparticles successfully on the TiO2 photoanode through a simple dipping treatment. The photoelectric performance of the assembled cells was investigated by absorption spectra and current-voltage characteristics (I-V curves). Results show that the absorbance of ZnO/TiO2 composite photoanode increases 5.4% compared to pure TiO2 photoanode. The optimal photoelectronic property can be reached when dipping time is 2h in Zn (CH3COO)2 solution. And at this point, the photoelectric conversion efficiency increases up to 50%. The enhancement mechanism has been discussed in detail.
Conductive Silver-Modified TiO2 Nanoparticles Prepared by a Silver Mirror Reaction
Authors: Gong Yu Mei , Zhao Na , Li Yi Wen , Zhang Shuai , Zhang Hong , Guo Jing
Published: June 2014

A simple and non-toxic way was employed to fabricate electrical conductive TiO2 materials based on a chemical reduction process here. Glucose was selected as a reductant to reduce AgNO3 to obtain Ag-modified TiO2 nanoparticles. The properties of the nanoparticles were characterized by XRD, TEM, and fourpoint probe resistivity meter. The results show that the TiO2 was successfully modified by Ag nanoparticles, and the major crystalline phase of TiO2 in the Ag-modified TiO2 composite is anatase phase. The size of Ag increased with the AgNO3 concentration increasing. Compared with pure TiO2, the Ag modified TiO2 has a higher electrically conductive. In principle, it is expected to be a general and versatile approach to increase the conductivity of insulator or semiconductor.
Material Balance Method Combined with Hydrocarbon Generation Kinetics to Calculate the Efficiency of Hydrocarbon Expulsion
Authors: Huang Ai Hua , Wang Min , Tian Shan Si , Xue Hai Tao , Wang Zhi Wei , Zhang Wen Hua
Published: June 2014

In order to calculate the efficiency of hydrocarbon expulsion by material balance method, we analyzed and corrected the geochemical parameters of five source rock samples. The hydrocarbon generation kinetic parameters of these samples were calibrated by the model of limited parallel first order reaction, and then these were extrapolated with the burial history and thermal history, then we got the hydrocarbon-generating section. Combined with the corrected geochemical parameters calculate the generating hydrocarbon amounts and expulsive hydrocarbon amounts. The result shows that: expulsion efficiency of hydrocarbon source rocks in this research were mainly between 59.1% -91.8%. It is determined by maturity (Ro), type of organic matter and pyrolysis parameters S1、S2.
Characteristic of a Novel Composite Inorganic Polymer Coagulant-PAZF Prepared from Industrial Wastes
Authors: Li Ming , Yu Yan Zhen , Wang Juan Ting
Published: June 2014

A new composite coagulant polymeric aluminum zinc ferric (PAZF) was synthesized from industrial wastes. The structure and morphology of the coagulant was characterized by X-ray Diffraction (XRD), Infrared Spectroscopy (IR) and Scanning Electron Microscopy (SEM) and the coagulation performances were evaluated by dyeing-printing wastewater treatment. The results show that new complex compounds are formed in PAZF. Compared with poly aluminum chloride (PAC), the contents of ionic polymerized bonds and the cross-copolymerization among Fe (III), Al (III) and Zn (II) hydroxyl polymerized bonds are increase obviously, and the surface morphology of PAZF presents a net-like structure with the longer molecular chain. Coagulation experiments indicate that PAZF exhibits better coagulation performance in removing turbidity, COD and chromaticity.
Microstructure and Deformability of Cast Zr-Nb-Fe-O Alloy with High Iron and Oxygen Content
Authors: Jeong Gu Beom , Song Jae Sook , Hong Sun Ig
Published: June 2014

In order to investigate the possible effect of the scrap inclusions in recycling, microstructure and deformability of Zr-Nb based alloys cast with the addition of iron and iron oxide were studied. No visible iron oxide inclusions were observed in the arc-melted cake, suggesting that Zr and Fe2O3 reacted completely to dissociate Fe2O3 into Fe and O in the Zr. No oxide peaks were observed by XRD analyses. In Zr-Nb alloy melted with iron oxide, the oxygen content reached up to 3150 ppm. Zr-1.2 Nb alloys with high oxygen contents exhibited needle-shaped α phase. and the the thickness of needles decreased. In Zr-1.2Nb alloys with over 2000 ppm they are brittle and cracked during rolling process. In some region of the fracture surface brittle fracture feature such as vein-like pattern was observed. In the fractograph, no brittle second phase particles were observed. EDS spectra. It is apparent that Zr-Nb alloys with the addition of iron oxide during the handling of scrap materials exhibit the extremely brittle behavior.