Search all articles

Power transformers are key components in the stable operation of electric power system. Reasonable arrangements of maintenance strategy according to transformers’ working condition can decrease the loss lead by transformers’ faults. The dissolved gas analysis (DGA) is the widest technique used in transformers’...

In this paper, a calculation model of 491Q gasoline engine working process was established using the engine one-dimensional simulation software BOOST, and through the analysis on the curve of pressure fluctuation in the front of the inlet valve at the speeds, the relationship between the late closed...

The flue gas flow from thermal power plant is an important standard in the environmental monitoring process to judge whether the procedure need improving. Because of the low flow of SO3 and its profound impact on the environment, it is hard but necessary to monitor the precise content at present overall....

This paper briefly introduces measurement principles of Nondispersive Infrared (NDIR) carbon dioxide (CO2) sensors as well as summarizes performance characteristics of NDIR CO2 sensors, factors affecting the accuracy, calibration methods, market situations and trend of NDIR CO2 sensors.

The photolysis and hydrolysis of prallethrin was studied in the laboratory. The result of the test showed that the photolysis reaction of prallethrin in aqueous solutions irradiated by 500w xenon lamp fitted to the first order dynamic equation. The results also showed that the hydrolysis rate of prallethrin...

The rapid development of business activities to accelerate the development of logistics industry. As the global economy and the advancement of electronic business logistics costs in the proportion of the whole cost is more and more big, the effectiveness of the logistics problems have become more and...

The integrity zone is the concept of organizing quality public services. Every service provider is currently competing to get the title as an integrity zone area. One of the efforts to support the implementation is through the implementation of an electronic scholarship government system. The Faculty...

the new method—AHM, and nine parameters which included diameter, delivery pressure, pressure ratio of the first station, pressure ratios of intermediate stations, number of stations, investment costs of pipeline ,investment costs of stations, investment costs of operation ,equivalent cost, have been...

The relationship between the American and Chinese economies facilitates the creation of over 25 million employment opportunities in the United States. This relationship is not limited to specific sectors, but certain sectors thrive compared to others. It is crucial to understand how the relationship...

The presence of public services is to be able to achieve goals, namely, serving the rights of the general public and meeting the needs of the community for the necessary goods, services and administrative services. Therefore, it is the responsibility of the government to be able to create quality public...

Aimed at frequent bulge fault of breaker hydraulic operating mechanism, oil pump failure is analyzed, and liquid level sensor and gas sensor are used to design intelligent exhaust device. This device, with neural network self-learning height measurement algorithm as core, processes the data obtained...

Tracer study which is a form of survey to LSP Unesa which organizes competency certificates that have strategic value for the development of higher education. The results of this tracer study activity can be used to evaluate the LSP that provides competency certificates to students. To find out the competencies...

In this paper, we focus on the need for temperature field analysis of gear transmission, as a important issue related to gear transmission’s reliability. Most of previous studies were based on traditional heat transfer theory, focusing on numerical analysis method, however oil cooling effect has not...

The chemically recuperated gas turbine (CRGT) is a promising engine on ship because of its high thermal efficiency and low pollutant emission. This paper is aimed at determining an applicable configuration of the CRGT for marine applications. Diesel is the selected fuel, and the minimization of Gibbs...

The economic analysis model is structured by calculating the price to get break-even points of all programs; Second, considering energy consumption and emissions of each kind of technology, the emission reduction calculation model and energy efficiency analysis model are established; Finally, the empirical...

To study the influence of gas pressure to coal failure process and crack evolution, using coal solid-gas coupled mechanics testing system, conducted the raw coal uniaxial compression failure experiment under different gas pressure; the evolution process of surface micro-cracks was synchronously observed...

Technology is growing in all fields and human activities, and digitalisation is increasing. So, everyone must improve their ability to understand digitalisation. Understanding and using digital technology is important so that everyone can take advantage of digitalization. Previous research found that...

The overall structure and the weak zone of a new circular composite fragile cover have been presented. In fabrication of the fragile cover, a particular hand lay-up molding process is proposed. The deflection and failure pressure of the circular composite fragile cover have been experimentally investigated....

A new type of large-scaled and homothermal solar energy biomass fermentation device,which can unload itself without dynamic,is introduced in this paper.With homothermal solar technology,It guarantees homothermal fermentation and improves the rate of methane gas.With streamlined pool and lifting system...

The incidence rate of childhood depression has been rising in the past few years, but the information and consciousness about it have not been popular at the same speed. The purpose of this paper is to describe the etiology, diagnosis and major interventions of depression in childhood. Although it is...

Aiming at the abnormal emission of coal seam floor gas in a Coal mine, we implemented the core drilling. Observed the lithology and gas emission information of the target, and combined with the previous studies, we conclude that there are three kinds of sedimentary microfacies in this working face floor:...

This work is the scenery complementary gas of biomass energy -equipment industry which is mainly to complete the biomass energy equipment,in order to provide the conditions of production and service for new biomass energy device. At the same time, based on China's renewable energy development , current...

Much applications based on cloud computing has emerged. This cloud print, such as HP ePrint, Google print is one of the typical. Archiving the vision of cloud print must solve two key problems. One is supporting the variety of the printing format; the other is how to locate the print devices on the INTERNET....

Titanium alloy hydraulic tubes were weld with gas tungsten arc welding method in this work. The microstructure of weld zone and heat affected zone are clarified with metallographic microscope, And followed by tensile test and fatigue test, with stress rate R is 0.1 and frequent is 10 Hz. It is found...

This paper mainly discusses the pellets low temperature pulverization performance experiment research. Through KSZ-03 ore comprehensive metallurgical properties tester and drum devices such as low temperature for pellets in index for performance test, to determine the low temperature reduction degradation...

Schizoid personality disorder (ScPD) is a rare mental disorder, the field is young, and related research is not well-developed. This review used a systematic search on Google Scholar about researches on ScPD and fundamental information. The main purpose of this paper is to grow knowledge of ScPD and...

In recent years, as the intelligent terminals developed rapidly, the combination of intelligent terminals and Internet has been an evident trend of information development and utility software. Based on the kernel of Linux V2.6, Android is the representative of mobile terminal, which is an open operating...

The quantitative determination method of seven organic phosphate esters (OPEs) in urine by gas chromatography-mass spectrometry was established and optimized by changing the derivative reaction procedure, the different sample doses and the different extraction reagents. The results showed that the best...

Micro-grid is a hot issue in new energy research, and a major orientation of distributed power generation in the future. The diversity and flexibility of distributed power generation complicates the operation and scheduling optimization of micro-grid. On the basis of considering a mathematical model...

Happiness has a positive impact both physiologically and psychologically. Students who feel happy can improve their academic performance and continue their studies. Changes in the learning system during the pandemic made the condition of students experiencing boredom in responding to academic loads and...

In this paper, an immune genetic algorithm based on the performance parameters of aeroengine and the adaptive, learning and memory characteristics of artificial immune system (AIS) was put forward to diagnose the fault of aeroengine. Firstly, we generate the initial detector according to the fault samples,...

There is a great significance to analyze carbon footprint of iron-making process and to reduce its environmental impact since iron-making enterprises generate massive greenhouse gas. In this paper, the environmental impact type referred to Global Warming Potential was applied to analyze the carbon footprint...

In order to research the static performances of the spherical spiral groove hybrid gas bearings, the lubrication analysis mathematical model of spherical hybrid gas bearings is established with variable tangential angels of gas supply. Subsequently, the mathematical model is transformed by derivatives...

In order to evaluate the development efficiency of different types of power projects, combined with the characters of power projects, the evaluation index system of power generation efficiency decided by input indicators and output indicators. The model based on super-efficiency data envelopment analysis...

In order to research the transient-state flow field characteristics of spherical spiral groove aerodynamic bearings, the bearing's 3D micro gas film mathematical model was established, and analyzed the 3D gas film pressure field of the bearing based on the FLUENT software of fluid dynamics, and obtained...

In order to study the effects of mass ratio of steam to biomass (mS/mB) and temperature on the gas composition, a model was developed to simulate the biomass-steam gasification process using Fluent in a fluidized bed. The simulated results showed that the volume fraction of H2 increased firstly and then...

In order to promote the development of biogas project in cold northern rural areas, this paper introduces some details about a set of warming system compounded with biogas and the waste heat from industrial boiler’s flue gas or solar energy ,which can makes the biomass fermented normally even if the...

The purpose of the study tries to investigate the impact of financial development on carbon emissions. In addition, the study also examines the mediating effect of industrial structure upgrading on the relationship between financial development and carbon emissions. Using annual data of 283 cities in...

This study seeks to evaluate how planned behavior influences the intention of Batam residents to participate in medical tourism by obtaining healthcare services in Malaysia. Adopting a double regression model, the research explores the direct effects of independent variables on the dependent variable,...

In this study, the pyrolysis of Zichang˚Coal (ZC) was investigated by thermogravimetry (TG) using three˚Catalysts, and the yields of the products obtained from pyrolysis, as well as gas˚Composition, were investigated by gas˚Chromatography (GC) using a fixed-bed reactor. The˚Catalytic mechanism was discussed...

Thermal pyrolysis of city life garbage gas is an effective means to achieve waste reduction, harmless treatment and resource utilization. However, the particles in the fuel gas has a detrimental effect on its recycling. It must be purified before recycling. The waste gasification gas purification process...

Surveys on Po-210 and Pb-210 levels in atmosphere in China were reviewed, and the average concentration of Po-210 and Pb-210 in atmosphere were 1.7 mBq/m3 (ranging from 0.12 to 9.4 mBq/m3) and 0.70 mBq/m3(ranging from 0.03 to 1.83 mBq/m3) respectively, which are apparently higher than that the world...

During the last decade, there has been increased use of neural networks (NNs), fuzzy logic (FL) and genetic algorithms (GAs) in artificial intelligence (AI). Since these three methods are complementary rather than competitive, a better performance model which has combined GAs, FL and NNs comes into being...

In order to detect the performance of SCR denitration catalyst activity online, and optimize the AIG spray distribution automatically, an innovative system is proposed. The system could monitor the NOx concentration distributions of SCR inlet and outlet flues simultaneously. According to the distributions...

Location service is a special function in the Android OS, LBS app is an import field in the mobile application development. Using Baidu map SDK as a tool, the Android location service teaching course which comply with the Model-Driven teaching method in pursuit of teaching process repeatability, operability...

Detection of combustible gases is very important to reduce the modality and disability of human in both of civil and military situation. In this paper, a method of detection combustible gases of acetone and ethanol was proposed by using back propagation neural network (BPNN) and principal component analysis...

With the rapid growth of the stock market, stocks have been viewed as one of the most popular investments. Investors then face a problem that is how to allocate resources among the variety of stocks with the aim to increase their wealth through investment activities. The paper aims to design an investment...

The LNG (Liquefied Natural Gas) cabin is a key component in the maritime transport of -163 LNG. The cryo-insulation performance of cabin directly affects the security of LNG transport greatly. Based on a 10000m3 LNG ship, two structural schemes of the LNG cabin are certain, which include their materials,...

Skills social can in a way effective overcome complex problems, such as development Skills social For use practical. As a result of social media, there are risk Wrong interpretation and manipulation of others. Error Which general happen including miscommunication, data security, and problem other. Objective...

China as a country of economic transition and a big country in the world. In the international trade, She passively accepts the price of the carbon transaction under great pressure from European and American developed countries to control greenhouse gas emissions. In November 26, 2009, the Chinese government...