Advances in Engineering Research

CO2 dry sand fracturing is a dry fracturing technology that uses liquid CO2 as the fracturing fluid. Compared with water-based fracturing fluids, liquid CO2 fracturing fluid has the advantages of less damage to the reservoir, a stronger ability to support fractures, and higher flowback efficiency. The...

It is of great significance to rationally determine the construction scale of land port multi-modal transport reloading area for scientifically guiding construction, improving construction efficiency and saving construction investment. The multi-modal transport reloading area of land port contains multiple...

Apart from having a positive impact on people’s welfare, tourism in Bali also harms ecosystem sustainability, especially regarding the issue of the groundwater crisis. The increase number of tourists is of course accompanied by an increase in the need for clean water. PDAM is only able to meet around...

The dead-end creek, as a blind area for water exchange, has always posed a challenge in improving the water environment of the river network area. Based on an investigation and analysis of the current water quality and live water conditions of the Wanlichangcheng River, coupled with the overall water...

The feasibility study for the clean water processing business for ferry needs aims to evaluate the potential sustainability and profitability of the project. The need for clean water on ferry ships, especially on long-distance routes, is very important to support ship operations, crew, and passenger...

In this work, Brushless Direct-Current (BLDC) Motor utilized in Electric-Powered Vehicle application is simulated using Closed-Loop Control (CLC). There are numerous methods for controlling a BLDC motor. Because Brushless DC (BLDC) motors have superior electrical and mechanical properties, they are used...

In the context of globalization, the shipping industry plays a crucial role in international trade, and fluctuations in freight rates have significant impacts on the global economy. This study integrates Automatic Identification System data with shipping schedule data to calculate the daily total capacity...

We propose all-solution processed white quantum dots light emitting devices (WQLEDs) based on CdSe/ZnS Quantum dots(QDs)/polymer hybrid emissive layer which was red, green and blue (RGB) QDs and blue emitting homo-polymer blending. The proposed WQLED showed higher brightness, external current efficiency...

In this paper, the problem of path planning existing target movement in the flight is studied. Firstly, according to the terrain threat, the threat field is created by using the Voronoi diagram method, and the total cost of the track is established. Then, the problem of the traditional path planning...

Solar power has become one of the most important renewable resources due to the energy crisis recently. An intelligent solar LED lighting driver system based on embedded technology was designed to make full use of the green energy. Electricity which was detected real-timely was generated by solar cells....

Collaborative filtering is a recommendation algorithm which is used in personalized system. To solve the problem of low accuracy caused by sparse data in the user-item matrix of traditional collaborative filtering algorithm, this paper presents a hybrid algorithm. Firstly, it uses the data based on the...

Assembled monolithic metro station is a potential kind of structure technique to solve a series of problems caused by the cast-in-situ concrete technique used in the traditional construction way of metro station. Seismic properties of this underground structure are modeled and studied based on the response...

In this work, the direct precipitation method was used to generate magnesium salt Mg(OH)2, the process of preparing MgO crystal by calcining Mg(OH)2 in three stage temperature was studied, and MgO crystal was characterized by scanning electron microscope and XRD. On this basis, the energy band structure...

Ethyl 4-hydroxy-3-methoxycinnamate was synthesized by reaction of ethanol and 4-hydroxy-3- methoxycinnamic acid using an efficient cation-exchange resin as catalyst under microwave irradiation. The catalyst activity was investigate by single factor experiments. The reaction conditions - amount of catalyst,...

In order to improve the level of the meteorological administration in the province, the electronic government affairs office and the government management in the network information system are standardized. The platform integrates the multi-tier architecture, supporting WebService, SOAP, XML and other...

Thermoelectric effect or Seebeck effect provides a means by which thermal energy can be converted into electricity directly. Voltage appears between two different types of materials (Conductor or Semiconductor) that are joined together and its junction is heated. While most efficient materials are semiconductors,...

The vehicle monitoring system is to use GPS technology to locate the vehicle, the vehicle information through the communication network back to the monitoring center, monitoring center and then use GIS technology to analyse the vehicle information, the vehicle is displayed on the electronic map, and...

Manufacturing factories are always in pursuit of achieving higher productivity in order to satisfy the growing demands of the consumers but are often meet with challenges in achieving these goals due to various complexities. These complexities arise from the limitations of human operator's i.e. their...

Non-ferrous metal, crystal material, infrared glass and so on are widely used in the infrared optical system, they can be cut directly by single point diamond turning, so single point diamond turning technology was soon applied to infrared optical elements processing, which can be understood that infrared...

Traditional way of tea processing have staff labor intensity, low efficiency, high cost, product quality is not standardized, and mechanical processing instead of manual tea with tea very good to solve the above shortcomings, this article from mechanical processing technology of tea, Analyze tea frying...

Informatization is the trend of world economic and social development, with the network technology and multimedia technology as the core of information technology has become the creative tool of expanding human ability. "Computer" and "curriculum integration" teaching model has become our country oriented...

Methods used for the determination of strontium content in strontium carbonate are mostly based on traditional chemical method, which is lengthy and cumbersome. If inductively coupled plasma emission spectrometry or atomic absorption spectrometry are used to determine the strontium with high content,...

In order to have a better understanding on the stability of roadway surrounding rock in QingFeng coal mine. Protodyakonov's theory is used to evaluate its stability theoretically, then a numerical simulation is conducted to analyze the stability of roadway surrounding rock in natural state by using the...

Rapid design systems in existence mainly target at series development instead of product variant design. As an effort to solve this problem, this paper applies WAVE (What-if Alternative Value Engineer) to rapid product design. It elaborates on the basic theory and design method of WAVE and points out...

A non-conventional method of obtaining few-layer graphene (FLG) is suggested, which comprisesrepeatedly rubbing bulkgraphite against semiconductingand insulating substrates. The obtained graphene/graphite structures consisting of rubbed-off layers behave like a semiconducting material with through-thickness...

In this paper, an adaptive noise cancellation system based on RLS algorithm is presented, and the principle of noise cancellation system and the steps and processes of RLS algorithm are described. The simulation of adaptive noise cancellation system based on RLS algorithm is obtained by using an example....

Designed a kind of prefabricated solar heating system, It tested the performance of the heating system. The heating system mainly includes prefabricated solar heat collection plates blower gas transmission pipeline heat accumulator bulk flow device control box. The solar heating system can be effective...

To analyze the bearing reliability of oil film between the element and the pulley of metal V-belt cvt, an mathematical model of oil film thickness between the element and pulley was build based on the theory of EHL (elasto-hydrodynamic lubrication) and the experimental data. And then solved by multi-grid...

Meteorological satellite images are very important in meteorology, and they have a clear reflection to the process of the weather’s dynamic changes. Remote sensing technology can give the detection and identification to the objective, and it has the effective identification to the weather pictures. In...

Regulation is very useful in remedy the market failure effect caused by monopoly, especially in natural monopoly industry such as electricity. This paper first reviews the regulation situation in China’s power industry, then we analyze the influence factors that have influence on the regulation in power...

At present, the research and application on material still stays in the primary stage in domestic, mainly by introducing the foreign advanced technology and experience, rare in independent research and new materials development of technology. Proceeding from our national conditions, we should focus on...

BMP2 is known to activate ER stress-associated molecules,including XBP1S and ATF6.PGRN (Progranulin) was reported to be a stress-response factor in response to hypoxia and acidosis. Here we present evidences demonstrating that PGRN is also an ER stress responsive factor.PGRN expression was induced and...

This article introduced application technology of road anti-icing asphalt coating. By conducting field tests, the construction procedures and requirements were summarized. By conducting lab tests, performances of the anti-icing asphalt coating were verified. Testing results show that the anti-icing asphalt...

This research was conducted at Tapunggaya in Molawe subdistrict in North Konawe Regency in South East Sulawesi, near activity of mining Laterite Nickel. This research aims to know the impact of the activity of mining nickel laterite on the quality of groundwater. The methods used to analyze concentrations...

Wind power forecasting is of great significance for promoting the new energy resources accommodation and the economic efficiency, security and stability of power grid operation. The traditional wind power forecasting model has monotonous elements for input and demonstrates a lack of spatiotemporal correlation...

Road is one of the important infrastructures in facilitating the mobility of goods and services in order to improve the national economy, but most of the roads are damaged by the effects of weather. The rain water interusion into the pavement layer make accelerates erosion process. The asphalt erosion...

Many cases show that multiple injections fracturing serves as an effective method to increase the probability of creating complex fracture network for shale gas reservoirs. However, its mechanism is unclear. This paper, therefore, intends to use numerical simulation and theoretical models to explore...

The harmonic suppression must be applied to the power equipment in distribution system in order to improve the power quality and saving energy. So the author developed the dynamic harmonic filter, and it was successfully applied. Based on the previous research, Firstly, the paper analyzed quantitatively...

The increasing access requirements of distribution network in urban centers and the limited bay resources in power grid have formed a great contradiction. Ac-cordingly, the bay resource optimization method based on hierarchical model is proposed in this paper. Outer planning selects attributive substations...

Methods used for the determination of titanium content in pyrotechnics are mostly based on traditional chemical method, which is lengthy and cumbersome. If inductively coupled plasma emission spectrometry or atomic absorption spectrometry are used to determine the titanium with high content,the sample...

Breast cancer is a threat to women’s health. Female adolescents need to be vigilant. This study aimed to analyze the relationship between dietary patterns, sedentary lifestyles, and breast cancer awareness among female adolescents. A cross-sectional approach with stratified random sampling was used....

The current use of the gelam tree is only found in wood processing. On the other hand, gelam bark is not optimally utilized so as to produce unused bark waste even though the natural fiber of gelam bark is of high economic value. The purpose of this study was to determine the effect of volume variations...

According to Ministerial Regulation No. 24 of 2015, Law No. 23 of 2007, and Government Regulation No. 56 of 2009, the government as the regulator is obligated to ensure that the operation of rolling stock is in accordance with the regulatory standards and can be operated safely as demonstrated by testing...

The scope of this research is focused on the segment of Yitong River in the Nanguan District of Changchun City. Utilizing GIS technology, a thorough analysis of the transportation accessibility in Nanguan District is conducted. Additionally, a survey is distributed to residents to explore their needs....

Programmable Logic Controller is electronic equipment that operates digitally, which uses programmable memory to store internally for specific function instructions. In the process of transmitting PLC data, it still uses cables or cannot use wireless because the PLC itself does not have wireless. To...

The environmental vibration problems caused by the operation of subway trains are becoming increasingly prominent. In order to master the influence of line conditions on the vibration characteristics of the subway under high-speed driving conditions, field test of track vibration on a curved section...

Final Project is one of the academic stages that must be passed by students to obtain a degree. In the era of the Covid-19 pandemic, the stages to achieving this degree must be done online by students. To accommodate this, we need a system that can bridge so that the final project stages can run even...

The production process of bricks made from waste mud was optimized in this study by investigating the effects of various factors on compressive strength, including curing agent formula, molding pressure, moisture content, and dosage. Economic benefits were also analyzed based on market conditions, demonstrating...

To investigate the characteristics of the differential pressure force on the tailplane which is in the trailing edge of the main wing. In this paper, Ansys Fluent software is used to simulate the characteristics of the differential pressure force on the tailplane when aircraft with different tail heights...

With the increase of foundation pit excavation depth, the influence of groundwater on the horizontal displacement of the envelope structure during foundation pit excavation is becoming more and more obvious. The coupling of the sedimentation mechanism and the stress field is analyzed, the deformation...

As a complex dynamic composite system, the accurate prediction of water resource coupling systems is key to the scientific management and sustainable utilization of water resources. Traditional modeling methods based on raw undecomposed data have limitations in mining deep patterns and latent patterns...

With the development of autonomous driving technology, autonomous vehicle navigation in complex environments has become a key challenge. To cope with the difficulties in complex environments, multi-sensor fusion technology comes into being, which is of great significance for improving transportation...

In the present work, we constructed the Chongqing Municipal Inspection Data Center leveraging the cloud native technology architecture. The system was designed as a regional medical inspection data management center, focusing on centralized management of medical inspection data access, comprehensive...

Using the ReaxFF molecular dynamics method, we investigated the pyrolysis mechanisms of n-decane and its isomer (2-methyl-nonane) to assess how isomerization affects initial pyrolysis pathways and main product formation in straight-chain alkanes. The results indicate that at high temperatures, the initial...

During tunneling construction, excavation activities disrupt the geological layers, inducing deformation in the adjacent soil and giving rise to uneven settlement. Consequently, this can cause cracking, tilting, or even more significant structural failure. Utilizing the ABAQUS finite element software,...

Amplang is an iconic snack of Samarinda which is mostly produced by small and medium enterprises. One of the SMEs that produced amplang in Samarinda is SMEs Ampang “Y”. Amplang “Y” was established in 2010. The production process of amplang in SMEs “Y” was conducted manually with six workers. The production...

The hydrogen plant control system experienced six trips within a two-month period. This resulted in the cessation of hydrogen gas (H2) production and posed several potential risks to the generator, including: first, the potential overheating of the generator rotor, which could reduce the isolator’s lifetime....

This paper introduces Modbus-RTU Communication Protocol. Then, based on the analysis of the principle of communication and combining with an instance, the paper gives out a specific method to realize the serial port communication between computer and MCU C8051F020 in Kingview 6.55.

Power line over-current relay protection is an important part of power system, it is an important technical measure to assure the safety and reliable operation of electric power system and electric power line. In this paper, on the basis of the features of the relay protection in the power line, thorough...

Gleeble thermal-mechanical simulation can accurately control the parameters such as thermal, force and displacement of certain working conditions, which has been widely applied in the HAZ simulation and other metallurgy behaviors. In this paper, Gleeble thermal simulation technique has been used to study...

Shield tunnel construction will disturb the surrounding strata and cause stress release and adjustment, resulting in uneven settlement of adjacent buildings and even collapse. According to the geological conditions of Ji'nan Railway Line 2, a three-dimensional numerical model is established. The analysis...

In this study, a self-oscillating polymer chain with Fe(bpy)₃ as the catalyst of the Belouzov-Zhabotinsky (BZ) reaction was synthesized to examine the influence of strong acid (due to its oxidizing power) on the self-oscillating behavior. The polymer chain with Fe(bpy)₃ underwent a soluble-insoluble...

To solve the problem of insufficient bandwidth in damping frequency, it is the key to advance the application of tuned mass damping method in architectural design. This paper presents the idea that the tuned mass ratio increases the bandwidth of damping frequency. Based on deterministic excitation, the...

In this paper, the effect of preparation conditions of the catalyst MIL-88A were investigated. The results shows that MIL-88A with the raw materials proportion of n (Fumaric acid/ Fecl3?6H2O)=1:1, the synthesis temperature of 85? and crystallization time of 2h, activation temperature of 100? and drying...

The mechanical properties of rubber materials are complex, and the strength problem is getting more and more attention. This paper summarizes the research status of mechanics experiment of rubber materials under dynamic and static load, commented recent years domestic and foreign the progress on the...

point bar reservoir is the key development object in the late development of Daqing Oilfield, in this paper, the numerical simulation based on the construction of the point bar is carried out on the basis of the modeling of the point bar. Through dynamic data generating simulated well history and acquiring...

As a superconducting radio-frequency (SRF) cavity is a thin-shell structure with several thin bellows to bridge to its cryostat, any external excitation readily induces oscillations. The operation of a SRF module becomes unstable when the RF resonant frequency varies, due to mechanical vibrations, to...

On the analysis of the electrochemical abrasive belt polishing technology, the main process parameters and equipments for the compressor crankshaft are selected; a set of finishing experiment plan is designed. The results show that the polishing process can reduce the surface roughness obviously, and...

In this study an experimental investigation was carried out on a turbocharger with variable nozzle turbine (VNT) and exhaust gas recirculation (EGR) system reducing emissions of a direct injection diesel engine. In the EGR system, the exhaust gas was tapped off before the turbine, cooled, and mixed with...

Objective: aiming to establish a new strategy based on uniform design and genetic algorithm and applying in the optimization of the separation condition of Ginkgo biloba extract using reversed-phase liquid chromatography according to traditional optimization methods. Methods: based on uniform design...

The probability approach is the most popular way to quantify uncertain parameters and perform reliability analysis. The problems of structural optimization and robust design for laminated composite structures with reliability constraints are addressed in this paper. A new methodology to determine the...

To prepare SiNx thin film with good compactness, fast deposition rate and stable performance, plasma-enhanced chemical vapour deposition (PECVD) is adopted to study the influences of different technological parameters on the properties of SiNx thin film. The experimental results indicate that SiH4 and...

In terms of environmental protection problems relating to the stripping technique of glued cellophane tape, apart from equipment demands being very high, most operators in Taiwan still manually strip the tape. The processing speed is thus slow, and cannot meet operators’ expectations, which means that...

With the low altitude airspace open in succession in China, the general aviation industry of China began to develop rapidly, so general aviation development prediction has become one of the pressing needs for the future planning of the government and the general aviation enterprise. In view of this,...

Southern Shaanxi region has abundant featured resources. However, due to lack of guidance of characteristics planning theories and methods, small towns gradually lost their own characteristics in the rapid development. Based on the interpretation of the concept and constitution of town's characteristics,...

In multi-component spectral analysis, informative variables selection is important to get satisfied performance. The present research intends to establish relationship between eggs freshness and NIR spectroscopy, and build a compact and robust calibration model. Graphically-oriented local multivariate...

Morphometric and meristic characters are authentic methods for the specimen identification. The study on morphometric and meristic characters in fishes is important for the differentiation of taxonomic units and are able to spot differences between fish population. This study aims to analyze and determine...

Tea polysaccharide (TPS), which is considered to be another important active ingredient after Tea Polyphenols Relay, consists of monosaccharides which have a variety of biological activity and the complex structure. It has hypoglycemic, lipid-lowering, anti-thrombosis, anti-oxidation, anti-aging, anti-atherosclerotic,...

Jogging has many benefits, and one of them is to lose weight. Calories burned while jogging cause weight loss 90% more than just walking alone. The fact that often happens is that someone is exercising by forcing his body that has passed his normal threshold. This results in over or lower combustion...

Salinity and pH stress have effect on bacterial growth, enzyme activity and cell biomass. Optimum salt concentration and pH were need for the normal growth of bacteria except for halophiles, acidophiles and alkaliphiles. Different concentration of salt (2.5, 5, 10 and 20%) and pH (5, 7, 9 and 11) were...

This article describes the correlation function and the angular energy spectrum of scattered waves for terrestrial paths to distribute radio waves of the space propagation path and diffraction. The angular energy spectrum of the scattered waves on such paths is multimodal and causes the periodic nonstationarity...

Based on mining in working face floor karst collapse column, the damage of surrounding rock and the water inrush of GeTing coal floor of concealed karst collapse column as the research object, using numerical simulation software FLAC3D for mining stress field and plastic failure zones in the process...

There are many electric vehicles charging stations in distribution network.Uncoordinated charging electric vehicles load is large and changes quickily,it brings risk to the operation of power grid. If taking each station as an independent unit, which will reduce the practicability of the proposed strategy...

As the gradual improvement of environmental awareness in recent years, electric vehicles (EV) have made great progress. The paper first analyses the influencing factors of the electric vehicle's load characteristics, and then selects three load characteristic index of electric vehicle, divides the electric...

Based on the casting technique analysis on the temperature field and the velocity field for the low alloy steel, low alloy steel(LAS)/ high chromium white cast iron(HCCI) bimetal wear steel plate was prepared by two liquid bimetal composite casting process. The microstructure of interface layer of wear-resisting...

The paper analyzes the current power system harmonic estimation algorithms which have a considerable number of shortages. In order to improve detection precision and reduce the computational complexity, we can combine the ESPRIT algorithm with improved PASTd algorithm, consequently, achieve the rapid...

Simulation is a handy toolkit of scientists and engineers of all disciplines. Modeling and simulation helps in overall reduction of cost, increases the quality of products and systems, and documents and archives lessons learnt. This paper reviews modeling and simulation of cell biological systems in...

Development of favorite tourist destinations in Derawan Island and other places in the southern coastal region of Berau Regency, East Kalimantan, must be supported by the provision of good transportation infrastructure and services to encourage connectivity so that it can increase tourist visits annually....

Chinese cabbage plants were ones of the horticultural plants that have high economic value and support for national food security. The public demand for Chinese cabbage was increasing to meet market needs; this research needs to be done. The aim was to determine the effect of multi-use of SS organic...

Few years ago, there are some research or publication about 3D simulation especially virtual surgery that still continuous growing, that is 3D deformable object. The 3D deformable object resembles or mimic some object. The purpose of the research is to continue or add previous research especially in...

The paper presents a comparative analysis of energy transmission methods based on electromagnetism: non-radiative alternating electric, magnetic and electromagnetic fields. The examples of practical realization of the presented technologies are considered. The multi-criteria approach for analyzing the...

Since 1990, due to Mongolia’s transition to a free market economy, the migration of the population to cities, especially to the capital, has rapidly increased. As a result, urban lands are expanding, forest use around the cities is becoming more chaotic, and the impact of urbanization on forests is increasing....

Nowadays, thieves aim for a vehicle’s wheel rims because it has the least security among all parts of the vehicle. It can cost up to a thousand ringgit for sports rims especially. Products are available in the market with lug-nut structured key which may help to secure wheel rims. However, they are not...

A city's morphology can illustrate its characteristics, spatial structure, and growth tendencies. Nighttime light (NTL) satellite imagery is one of the methods that can be used to illusionize the center and sub-center of the city through the emission of light in the image. This study aims to describe...

In this paper, we generally focus on analyzing the concentration of carbon dioxide from the past and predict it in the future. And by using the carbon dioxide concentration data from previous years, we established Holt-winter model, linear regression model and ternary regression model to predict the...

Cybersecurity has become a critical issue in today’s digital era. This study aims to analyze public sentiment toward cybersecurity issues on social media using a text mining approach. Data were collected through scraping from Twitter, resulting in 935 tweets containing relevant information about cyber-security....

The implementation of natural dehumidifiers in agricultural drying systems presents a promising approach to enhance energy efficiency and product quality. This study investigates the effectiveness of natural dehumidifier placement in a multi-rack turmeric drying cabinet, comparing three configurations:...

The broad accessibility of digital image editing tools has been resulted in a significant increase in image forgery, raising serious concerns about the authenticity of visual content. This paper presents a comprehensive comparison of various image forgery detection algorithms, including Convolutional...

Advanced technology nowadays must be parallel with human ability to solve problems. However, some of the problem-solving approaches or methodologies must be used to overcome the advancement of technology. One of the methods that can be used is the theory of inventive problem solving which is TRIZ, that...

Simultaneous localization and map building (SLAM) is a key problem for an intelligent robot to accomplish autonomous navigation. And the results of data association are of key importance to the success of the SLAM. In this study, two bottleneck issues constraining SLAM data association are discussed...