Advances in Engineering Research

Phosphogypsum (PG) is one of the major solid wastes disposed on land. The safety evaluation of PG stacks is highly dependent on the correct characterization of its properties. Laboratory tests were performed to determine the physical and mechanical properties of PG, including its gradation, hydraulic...

This article describes one investigation of Okhotsk Sea sediment in the northwest Pacific margin, the study based the use of the advanced tool called Echo sounder system,made a large scale acoustic sweep to the east slope of Sakhalin Island.Through the acquisition of the echo signal, the multi-channel...

In recent years, roads are deteriorated due to increasing traffic volumes, and they require extensive reconstruction which should be environmentally friendly. This can be done by using new additives and waste and recycled materials in road construction. Recently developed warm mix asphalt technology...

Firstly, the graphite oxide was fabricated with the modified Hummers' method, and then it was dispersed in an aqueous solution along with TiO2 nanoparticles. The graphite oxide was peeled off by ultrasonic method and graphene oxide (GO) was obtained. The abundant functional groups on the GO surface make...

Spatial controls are import and requisite methods in Planning Environmental Impact Assessment to normalize the type, distribution and scale of industries. The traditional methods, such as matrix-based and Delphin-method assessment techniques, could easy identification of conflicts and trade-off between...

Reactors are widely used in power systems because of their important functions. Its series connection with reactors in the places where outlet breakers are can increase short-circuit impedance and limit short circuits' current. And its parallel connections with capacitors in wave filters can limit harmonics...

Constant direct current stimulation has facilitation for cellular growth of many histiocytes. This paper primarily introduces systemic, detailed development and achievement of software for this system. The system can accomplish controlling action of peripheral circuitry through computer interface. The...

Object: To explore the feasibility and effects of temporary intestinal drainage in the surgical treatment for the neonates with necrotizing enterocolitis. Methods: A retrospective analysis was conduct on 42 cases of newborns with extensive and multiple intestinal necrosis found intraoperatively, all...

Nanostructured semiconducting metal oxide (SMO) gas sensor can be fabricated with flame synthesis by combusting a premixed fuel-oxidizer mixture doped with a selected metal precursor in the stagnation flow configuration. Particle size and film thickness of the SMO sensor are the most significant parameters...

The traditional estimate method adopted man-made calculation as for the satellite tracking and control link level. But this model was simple for the most of calculation was adopted the experience data, and did not think over the complicated influence factor. In order to do better on the estimate precision...

Association rules mining is an important model in data mining. The classic Apriori algorithm for Association rules need scan database many times and generate a great deal of candidate itemsets. This paper proposes a new algorithm for mining association rules based on matrix. The algorithm scans database...

China Certification Centre for Energy Conservation Product found in the investigation that the standby energy consumption accounts for about 10% of the electricity consumption of Chinese family. This paper presents an energy-saving design by human body induction in order to cut off the power supply when...

According to the distribution characteristics of workflow time node, this paper studies the time node representation of a structured workflow and describes in detail the definition of workflow time node in Product Data Management, then puts forward a tree design model. From the time property of different...

The influence of carbon and alternating oxic-anoxic model on sludge bulking and chemical oxygen demand (COD), ammonia nitrogen and total nitrogen removal effect are investigated under alternating oxic-anoxic model in sequencing batch reactor (SBR). The experiment performed for 23 days and 30 days instage...

To understand the migration transformation rule of heavy metals in the process of extracting proteins from the sludge with enzymatic hydrolysis, this experiment studied the total amount of heavy metals in the sludge and the its morpHological change characteristics in the process, and the results showed...

The author designed a program for utilizing residual pressure of water pipeline, by which theoretical analysis and calculation were performed and the small residual pressure energy power generation device was developed. Theoretical analysis and calculation results show that the maximum input power firstly...

Based on ordinary Portland cement, in this paper, direct shear test and unconfined compression test were conducted on Nansha Guangzhou soft silt blended with admixtures such as lime or gypsum respectively to research its mechanical property and get the correlation between reinforced silt’s internal friction...

Air revitalization technology of environment control and life support system (ECLSS) should be developed for the long-time orbit mission of manned spacecraft. Two kinds of molecular sieve materials, TC-5A and PSA-5A, have made on request by China's manned space development demand, and the dynamic model...

This paper gives a brief review ofthe development and utilization status of the renewable energy in China and explains the importance, urgency and feasibility of the development and utilization of the renewable energy regarding strategic choice for national adjustment of energy structure. The renewable...

The hot tensile test of BR1500HS ultrahigh strength steel was carried out on Gleeble3500 thermo-mechanical simulator. The process was predicted by finite element simulation based on Freudenthal fracture criterion. Then, the Freudenthal fracture criterion is modified based on the relationship between...

The article discloses an increasing role of biodiversity in strategies of sustainable development of mountain areas. Unique character and attractiveness of mountain ecosystems due to significant biological, landscape and ethno genetic diversity and their sensibility to anthropogenic have been discussed....

Longchang Aqueduct is a reinforced concrete box deck type arch with clear span 200m,located in Guizhou Province of China, inclined cable-stayed buckle and cantilever erection is adopted for rib assemble. This paper introduces the arch ring of arch foot section of the construction of a unique process,...

The crankshaft is the important parts, engine crankshaft in multi-axis linkage machining crankshaft connecting rod journal fillet, due to the current solution is expensive, time consuming is too long, this paper proposes an improved scheme, make better able to take advantage of the present condition...

This study investigates the use of ureolytic bacteria, specifically Sporosarcina pasteurii, to enhance concrete’s self-healing capabilities through microbial-induced calcium carbonate precipitation (MICP). Ureolytic bacteria catalyze the breakdown of urea, leading to carbonate formation, which subsequently...

we take Germany as an example to derive a dynamic model which describes the relation between supply and demand. Through the data we apply least square method to fit the demand changing over time, as well as single objective optimization and radiation network to acquire the mechanism of distribution and...

When there is multi-variables in a sample, some samples which obviously disturb the relationships among variables are called outlier samples. However the presence of an extremely significant outlier sample tends to conceal some other outlier samples, which bringing great challenge to the identification...

SDN technology implements network deployment/management flexibility and network resource virtualization by the separation of the control plane and forwarding plane of the network. However, SDN technology faces the same problems as the traditional network does, that is the network can’t recognize the...

Medical waste disposal is an important problem. This paper firstly analyses the classification and present situation of medical waste disposal, then analyzes problems in the process management, and combine with related data to illustrate the necessity of medical waste disposal. Finally, the balance benefit...

Starting from the actual demand of logistics enterprise information management, vehicle scheduling problem model was established and the solving method of model was found based on the ant colony algorithm. At the same time, based on Android and MySQL database development environment, the paper carried...

This paper analyzes the case between U.S. and China Regarding China's Tax on Integrated Circuits. It evaluates on a country-by-country basis how they have fared in the specific case in which they were involved and in advancing their major trade policy concerns. Finally, it explores key issues and suggests...

Scientific articles are scholarly publications that present objective and verifiable information pertaining to study findings and literature reviews. These articles are typically disseminated through reputable scientific journals. The Open Journal System (OJS) is an open-source platform that facilitates...

This study investigates the transmission and current-voltage (I–V) characteristics of a 10-atom armchair graphene nanoribbon (AGNR) under a 90-V bias voltage using a Non-Equilibrium Green’s Function (NEGF) approach. The NEGF method is used to calculate the electronic properties of the AGNR, including...

Vegetation is the core protection object in nature reserve and establishing index sytem of the growth status of vegetation and analyzing the influencing factors are the basis of vegetation protection in nature reserve. Based on DPSIR model and the principles of science, comprehensiveness, difference,...

In the information age, the information flow of the editorial department is large and the complicated management system has been unable to meet the requirements of the rapid processing of massive information. In order to solve above problems, this paper design an office automation information management...

With the development of Internet and communication technology, the Internet data growth rapidly, and the type of network services varied. According to the different properties of the network services, network services classification is the foundation of many network applications, including network service...

A field study was conducted to investigate the effects of gap disturbance on the seedling establishment process of two native species. Seeds of Agropyron cristatumandStipa kryloviiwere reseeded to artificially created gaps in a degraded steppe in North China. There were seven treatments: shoot gaps and...

Pre-oxidation is widely used to remove synergistically algae, odor and natural organic matter (NOM) for drinking water treatment. Permanganate (KMn₄), ozone (O₃), and hydrogen peroxide (H₂O₂) in combination with polyaluminum chloride (PAC) coagulation for assisting the removal of NOM and disinfection...

The corrosion behaviors of AZ81 magnesium alloy with minor Gd addition have been researched in this paper. The results show that with the minor addition of 0.5-1% Gd, the microstructure of AZ81 magnesium alloy is obviously refined, and the spotted, high-melting point phase Al-Gd intermetallic compounds...

The cropping patterns as drip irrigation under mulch were assumed in the experiment with peanut variety "Fu Hua 17" to study the effects of different topdressing on photosynthetic characteristics and yield for peanuts. Five different treatments were carried out to determine the photosynthetic characteristics,...

China is a country with frequent geological disasters,a large part of the geological disasters and the damage of the roadbed is caused by the instability of the slope product . In this paper, the slope product is divided into the colluvial slope product ,the residual slope product and the alluvial slope...

Metal-Oxide Arrester(MOA) is to limit the lightning overvoltage and operating overvoltage, and protect other electrical equipment from overvoltage damage. The fault diagnosis of MOA is very important to power system, traditional test methods has several factors to restrict the efficiency and accuracy....

With the development of space technology, the space manipulator is widely used in space. Before launching into space to practical work, the manipulator needs to finish a large of number of experiments on the ground. In this article, we study on the mechanical arm to finding out the mechanical properties...

The extract of Ligustrum lucidum Ait. seeds, as green and eco-friendly corrosion inhibitors, have been investigated on the corrosion inhibition of Q235A steel in 1M hydrochloric acid solution at 60 by weight loss and potentiodynamic polarisation techniques. The inhibition efficiency of the extracts varies...

This paper discuss the using of the current PC104 bus technology and chemical oxygen demand (COD) on-site analysis technology to do the secondary development on the the seawater chemical oxygen demand analyzer (COD analyzer).The control system of the COD analyzer is formed by PC104 modules.Each PC104...

This paper starts with constructing the optimal process of shale gas economic indexes through selecting suitable statistics and prediction methods to confirm the major evaluation parameters of shale gas, such as single well recoverable reserves, single well composite cost and gas price. Then, economic...

To solve the problem that many test points are needed in radar antenna servo system when fault diagnosis is needed for this system, a new test points selection method based on Particle Swarm Optimization algorithm is researched. Test points selection is a many-target optimization problem which could...

Four-wheel alignment is an important parameter in design of automobile structure, directly affects the driving performance of a car. In view of the current vehicle four-wheel alignment and vehicle application using case, in this paper it introduces a kind of query design pattern of the four-wheel alignment...

By using fluid dynamics calculation, we start a numerical simulation research on flow fields of cylindrical and conical nozzle in order to choose a better structure of cementing ground anchor, at the same time, we also do hydraulic cycle experiments on cylindrical nozzle with different bore diameter....

Based on the single-line train graph editing, this paper proposes a cross-line editing train graph technology of the network operating. Firstly, according to the operation line parameters, determine the cross line site and the relation of each line; Secondly, according to the operation requirements of...

Insulation and corrosion performance of 10kV overhead insulated conductor is better than that of ordinary overhead bare conductor, it can avoid trees, kites, wires and the strong wind causing interphase short circuit and grounding accident, so as to effectively solve line tree contradiction and line...

For battery and super-capacitor hybrid energy storage system capacity configuration, the hybrid energy storage system multi-objective optimal allocation model is proposed. The optimization goals were economic cost, reliability of power supply,and the balance of supply and demand. The constraints were...

In the design of analogue integrated circuit, layout optimization is essential for achieving higher performance, reliability, and yield. The study presents a comprehensive comparation of two dominant layout techniques, which are common-centroid and interdigitated, applied to the optimization of two-stage...

In this article, we analyze two conditions of changing of water temperature with time: reducing of water temperature naturally and pouring hot water into the bathtub. According to heat-transfer principles, there are three ways for heat to reduce: convection effects, radiation effects and thermal conduction...

The traditional Role-Based Access Control(RBAC) model[1] is widely used in enterprises, but it's control granularity is too single and it's permissions configuration is too complex. This paper introduces the concepts of coarse-granularity and fine-granularity[2], and puts forward a RBAC model that supports...

In this paper, we use experiment to work on our own design of the dimple plate heat exchanger and the experimental result is compared with the heat transfer characteristics of the flat plate under the same experimental conditions.The test result shows that, under the given inlet temperature condition,...

Target uniformly accelerated motion, when SNR is almost zero, only using DCFT accumulation method can not achieve the goal of uniformly accelerated motion detection effective accumulation. To solve this problem, derivation and analysis of the echo signal model and the characteristics of the signal model...

It is very difficult that experimental data collection was carried out in the small holes directly.And because of the rheological properties of non-newtonian fluid being complex, its transmission parameters in the channel, people often were depended on the single factor experiment chart or experience...

As Brake-By-Wire technology matures, ideal distribution of front and rear wheels braking force was available for PHEV through electro-hydraulic braking. In order to study the impact factors of regenerative braking recovery rate of this system, PHEV traveling on the flat and level road is analysed theoretically....

Resource reservation is an important part of the resource management in Large Distributed System such as cloud computing. An architectural framework for specifying and processing co-reservations in cloud computing environments is presented. Compared to other approaches, the co-reservation framework in...

This paper conducts the research on the novel phosphorus flame retardant epoxy resin model and that the corresponding flame retardant performance. Research will be introduced to the phosphorous epoxy resin curing agent of the structure, synthesis of phosphorus curing agent, curing agent with flame retardant...

Natural gas is a vital component of the world's supply of energy and a clear energy. Underground natural gas storages are underground facilities for storing natural gas. Optimization on tubing sizes for preventing corrosion in underground natural gas storage well is mainly to prevent erosion. In order...

A soil column-cultivation leaching experiment was conducted in greenhouse to expose the HMs leaching characteristics in the process of EDTA-enhanced Phytoremediation of Cd- Pb compound contaminated soil by Zea mays L.(in seedling stage) under the condition of acid rain. Results showed that: (1) In the...

According to deviation of measurement when most of flowing turbidimeters are used to detect low turbidity water, a new usage of sensor structure is proposed through theoretical analysis and guidance. To meet the needs of the new usage, the constant current source circuit we designed shows its advantage....

This study sets double injections in the inlet of the flow field to study the new blunt body’s law of the flow patterns and the combustion efficiency under the condition of the two-phase flow. Compared with the vortex shedding mechanism of the V-gutter blunt, the computational results show that the vortex...

The contents and distributions of some heavy metals i.e., Cd, Cu, Pb and Zn in different tissues of horseshoe crabs including Carcinoscorpins rotundicauda and Tachypleus tridentatus from the Beihai coast of Beibu Gulf were investigated. The results indicated that the variation tendency of measured metals...

Around CRH380 EMU bogie assembly, considering the bogie structural characteristics, grouping, object-oriented modeling, 3D animation, multimedia technology combine design a set of virtual assembly bogie animation method using Pro/E, build three-dimensional parts assembly model and virtual assembly.3ds...

Modern large-scale gas turbine’s rotor is mainly rod fastening rotor. The contact friction force between wheels, the pre-tightening force of the rod and bearing system have an effect on the rotor dynamics. According to the structure characteristics of the rod fastening rotor, contact model is established....

Two kinds of Acrylonitrile-Butadiene-Styrene (ABS) resins (ABS749S and ABS757) were manufactured as MCPA6/ABS copolymer alloys by in situ polymerization and their crystallization properties were analyzed by Differential Scanning Calorimetry (DSC). The DSC results indicated that ABS did not change coexistence...

Silver nanoparticles (AgNPs), as a new material with good properties, has been widely used in many fields. With the increasing production and usage of it, more and more AgNPs are entering the water environment, which was suspected to impose ecological risk to the aquatic ecosystem. Based on the acute...

The microstructure and mechanical properties of AZ81 magnesium alloy have been studied by micro-analysis and tensile tests. The results showed that the alloy mainly consists of -Mg matrix, Mg17Al12. The tensile strength of AZ81 magnesium alloy is measured, The best tensile strength is 258MPa at 20 .

The plasma spraying Al2O3-13%TiO2 (hereinafter referred to as AT-13) ceramic coating on Q235B steel surface was dealt with laser remelting technique , then change of the microstructure and properties of the laser remelting AT-13 coating was studied. The experiment results show that the microstructure...

In the development of network dynamic website, PHP technology is comparatively more safe and convenient. In application, it is widely applied to update the stability of dynamic information. Through effective application operation, it can ensure effective information embedding, so as to realize the safety...

It’s an important research issue in a remote user authentication scheme for a multi-server environment. Recently, Li et al. proposed a scheme to remedy Lee et al.’s scheme to avoid the forgery attack, server spoofing attack and changing password easily. However, we find that Li et al.’s scheme is insecure...

In this paper, the internal flow field in an optical module of DUV laser was analyzed by ANSYS Fluent based on the finite volume method. The way of purging nitrogen was optimized according to the results of the analysis. After the optimization, a better nitrogen purge method was obtained, and a flow...

Regarding the current situation of E-logistics of Chinese logistics industry, there are still many problems to be concerned and resolved. This paper reviews the concepts and theoretical background of E-logistics System from previous researches. After acknowledging the essential issues on E-logistics...

To study the effect of the projectile shape's influence in rotary penetration depth(RDP) of concrete target, LS-DYNA was used to simulate the process of the projectile rotary penetrating in the target under different projectile shape and different velocities. Simulation results prove that drilling-head...

With the development of market economy, complexity of market environment, strengthening legal supervision, increased operational risk and competition and other reasons, risk awareness has gradually increased in more and more industries and enterprise, therefore risk management is increasingly paid attention...

Recently a lot of projects have adopted crushed stone grouting piles to treat the soft soil foundation. As the conventional crushed stone grouting pile construction is easy to cause cement mortar to lose and poor pile body quality, this paper innovates on the conventional crushed stone grouting pile...

Five planting modes were designed to study photosynthetic characteristics, leaf area index and yield of peanut variety as Fu Hua 17 in order to provide theoretical basis for peanut yield increase in the sandy area. Results showed that the mode of peanuts planted for double rows in the border check with...

There is a certain kind of solid-state balance among individual buildings that within the same Vernacular architecture. Not all the understandings of it has formed the most common specifications and planning textbooks in current architecture, instead, some manifest as silent and hidden constructing principles...

In this work, a forward extrusion technology was developed for spur gear, which used in truck wheel redactor. In order to achieve better technological parameters combination, the finite element method (FEM) and orthogonal experiment were utilized to research the process of planet gear forward extrusion....

The process of gas-liquid two-phase flow of an IC anaerobic reactor (25L) was simulated by fluent software. Inner Cycle Flow Rate (QIC) under different volume loading rate(OLR), ratios of riser diameter to reactor diameter(Dr/D), ratios of reactor height to diameter (H/D) were investigated respectively....

As a key device to coal mining, the hydraulic pressure support is important for the safety of coal mine. Currently, most of design software for hydraulic pressure support are stand-alone version and only capable of fulfilling partial design work. They have been used for a long time and lacked software...

This paper sets the mathematical model of the single inverted pendulum,and analyzed the imperfection of PID control algorithm for inverted pendulum. Based on this case,the neural model reference control method is discussed in the paper.With the design of the inverted pendulum system with a model-reference...

The article introduced a model of water temperature distribution in bathtub. The model can be used to describe the distribution of water temperature in space. Based on the heat-transfer equation while taking temperature of each point in space into account, the authors design a model that can describe...

This paper presents a non-resonant dc magnetic field detector, which is composed of two aluminum strips and shear-mode piezoelectric materials. The operation of the magnetic field detector is based on the Ampere forces resulting from the current-carrying aluminum strips in dc magnetic field and the shear...

Photometric accuracy and precision are the most important technical parameters of spectrophotometers. In this paper, our three instruments, that is Datacolor SF600, X-Rite Color i7 and Varian Cary 5000 UV-VIS-NIR spectrophotometer, were inspected on their photometric precision for color measuring. Five...

The vehicle-terrain interaction model plays a critical role in off-road vehicle driving visual simulations. This paper present a new terrain deformation model for simulating vehicle-terrain interaction. The model simplifies the Bekker’s classic terramechanics model, and calculates terrain deformation...

Combining efficiency with previous research, this paper from the perspective of outgoing feeders start by analyzing a shipborne USB full-band solid state power amplifier VSWR test data, concluded: transmit power and there is a certain function of SWR, VSWR the frequency greater than 1.4 SSPA unable to...

With the continuous consumption of resources, the demands for energy and the consumption of non-renewable energy is growing more and more. Solar energy, as a green initiative non-polluting renewable energy, has a great prospect. But most conventional solar panels are fixed, causing the exploitation insufficient....

A graph is half-arc-transitive if its automorphism group acts transitively on its vertex set, edge set, but not arc set. Let n be a product of three primes. The problem on classification of the half-arc-transitive graphs of order n has been considered in [J Algebraic Combin 1(1992) 275-282, Discrete...

order to improve the reliability of aviation electronic sub-system in UAV, the analysis method based on Failure Mode and Effects Analysis (FMEA) is put forward. The risk factors and correction measurement feasibility parameters are quantified with fuzzy theory. Then the fault modes with higher risk priority...

Next generation network must be a situation that a variety of RATs (radio access technologies) coexist and integrate. Aiming at improving user’s QoS (Quality of Service) effectively, a mobile terminal access network selection strategy with multi-constraint conditions is proposed. Based on the preferences...

Based on the analysis of power consumption of the circuits, isolation transformers and secondary cables of traditional lighting systems, this paper proposes a long-term power efficient lighting system regarding LED airfield lamps, without modifying the topology of power circuit. New types of sine wave...

Gravitational Water Vortex Turbine (GWVT) has the advantage of harnessing hydro flow energy from the low head. Several research have been conducted to optimize the performance of this turbine type, one of which is by applying multistage rotor. This work is to study the effect of gap placement and phase...

This academic paper explores the flammability concerns associated with using the refrigerant R1234yf in refrigeration and air-conditioning systems. Since R1234yf is a flammable refrigerant, there is a potential risk of fire and explosion if there is an unexpected refrigerant leakage. The study investigates...

In order to solve the smart home electricity load optimization problem, this paper firstly analyzes the situation of smart home optimization frame and estimates the smart home electricity load model. The electricity load optimization control model is established to achieve the aim of helping smart family...

In recent years, with the development of artificial intelligence, more experts and scholars have joined in the research about facial expression recognition. Algorithms of feature extraction and facial expression recognition are put forward in succession, and each has advantages and disadvantages. A research...

In this study, two lab-scale reactors were set up and operated in this study, include a sequencing batch reactor for batch tests and a continuous predenitrification bioreactor for regular operation. Batch tests fed by Synthetic wastewater (acetate) and operated in intermittent aeration profile, demonstrate...

The model of lighting direct strokes on 10 kV distribution line in Guangzhou was built and the transient procedure was considered based on the software of PSCAD/ECTDC. The effect of arrest and ground resistance operating maintenance on lightning overvoltage in distribution networks has been discussed....