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Enzyme breakers have many significant advantages compared to the traditional oxidizer chemical breakers because of their substrate specificity, high efficiency and non-toxicity, thus enzyme have been widely used in the water-based fracturing fluids as guar gel breaker. However, there is an industry-wide...

In this paper, in the neglect of the core of the magnetic hysteresis, eddy current effect and the core skin effect and based on the analysis and summary of previous experience, an analytical method to determine the parameters of the transformer's turn to turn short circuit fault is improved and perfected...

The development of tight gas projects in the Sichuan Basin has come into prominence, and a good economic evaluation of tight gas exploration and development planning plays a very important role in realizing the long-term development goals of oilfield enterprises and ensuring the sustainable development...

With the correlation between information technology, teaching is becoming more and more thorough, the concept of " Micro-class" and "Flipped classroom” puts forward a new way of thinking for present college English teaching. It is the need of modern English teaching development. It puts forward higher...

Edible oil quality and safety is related not only to human health but also to the economic development of the country and the social stability. For this reason, research on edible oil quality and safety system is very important. This paper, by applying logical reasoning and empirical analysis, analyzes...

Picture books as a new reading channel have multiple levels of meaning and influence. In recent years, picture books have become more and more popular in China. Inspired by the excellent picture books originally introduced from abroad, Chinese original picture books have also become increasingly prosperous....

This study investigates the influence of Shariah compliance status, firm size, profitability, net working capital, leverage, operating cash flow, and capital expenditure on cash holding. Using a sample of 68 firms in non-cyclical consumer companies listed on the Indonesia Stock from 2017 to 2021. This...

Multi-walled carbon nanotubes (MWNTs) were modified by amidoxime group, characterized by fourier transform infrared spectrometer (FTIR). The adsorption experiments of Pb(Pb) on raw MWNTs and amidoxime group modified MWNTs(AO-MWNTs) were studied under different conditions. Results showed that, the adsorption...

Based on the source of the Lanzhou university sports students, cultural level, and the source of the physical education teachers and coaches and teachers as the research object, through the literature material law, questionnaire survey method, interview method to study statistics data, in order to analysis...

At present, SCI is not only an important retrieval tool in the world, but also one significant index used to evaluate aca-demic level of a country, a university or research personnel, so more and more higher universities pay much attention to the quality and quantity of SCI papers. Authors have mainly...

E-commerce refers to the use of the Internet for commodity trading business activities, the realization of consumers online shopping, and online transactions between merchants. The difference between E-commerce and traditional transaction models is that the transaction activities are supported by information...

Jacket offshore platform structure are the big space structures usually used in field of offshore oil engineering. Local damage of platform may occur in the action of emergency, and will result in the whole failure of platform under extreme loads. So it is necessary to analyze the failure mode and damage...

This research focuses on braking pad back plate of disc brake system. Firstly building original 3D model of brake pad and the prototype is manufactured , then 3D model is imported into ANSYS for modal simulation and noise bench test with prototype is conducted. To verify the validity and precision of...

As one of the important components of higher education, the importance of physical education in colleges and universities is beyond doubt, and physical education in colleges and universities can not only improve the physical quality of students, but also exercise the minds of students. However, physical...

Considering the rapid development of computer techniques, information and communication technology is being increasingly used in curricula and the current situation that students in higher education system who are spending more time on their smart phones and internet, which accordingly spending less...

In this paper, the tail distribution of pork market price fluctuation is fitted effectively based on the peaks over threshold (POT) model, and the Generalized Pareto Distribution (GPD) of extreme risk is obtained, and VaR (value at risk) method is introduced to measure the extreme risk of price fluctuation.Results...

With the increase demand of high power, high efficient and good beam quality solid-state lasers, thermal management become more important for the lasers. Thermal resistance between laser crystal and heat sink can be effectively reduced by soldering technology, but the technology might induce huge heat...

Derivation of parallel three-hole of small spacing Tunnel in shallow non- bias case, surrounding rock pressure formula in sequence of first side hole after middle hole excavation, drawn the corresponding computational model For the study of parallel three holes of small clear space tunnel surrounding...

To avoid the complex calculation of derivative in the backstepping design procedure, a novel kind of tracking differentiator was adopt to solve the derivative of ideal angle speed of the pitch channel missile system. Also, the ideal angle speed should be bounded or the stability of the system can not...

Through the analysis of the online teaching of teachers in universities and colleges, online teaching has key shortcomings in teaching technology concepts, teachers’ role reshaping, teacher-student interaction, teaching evaluation, etc. The root cause is that the online teaching quality assurance index...

With the prosperous development of emerging industries, traditional production like liquor is affected seriously. Wuliangye Group, as the top enterprise in the liquor industry, occupies a significant proportion of the market. Meanwhile, it is still looking for further development and to maintain its...

Through study it helps companies that they can adjust their strategies according to the maturity of the logistics market. The essay takes the agricultural and sideline products logistics capability as the object of study, makes issue analysis from the angles of supply chain, the structure, and then do...

With the popularity of personal credit and the establishment of individual credit system, credit card wins much more cardholder's approval in the global scope through its superiorities of security and convenience. It has become global payment means, which is the substitute for cash gradually. So the...

In this paper, the DEA method is used to construct an enterprise financial quality evaluation model, and evaluate the financial quality of 23 listed steel companies in China. The quality will be analyzed and calculated from three aspects, comprehensive efficiency, technical efficiency and scale efficiency....

The high competition between marketplaces certainly encourages each marketplace to keep innovating so that despite the many marketplace choices out there, people still use them loyally. One of the ways is by designing a marketing communication strategy. This study discussed one of the marketing communication...

Nowadays, with the integration of global film and television cultural exchanges, the packaging of Chinese TV channels has been impacted by foreign design concepts and film and television art trends, and the packaging style has lost its distinctive national characteristics and the homogenization phenomenon...

Stochastic medium model belongs to in-continuous medium theory. Open-pit slope and the slope are important excavation project that human utilize nature. In this paper, stochastic medium model was used in the foundation pit engineering ground surface movements. The adjacent ground surface movement and...

A kind of disturbance observer method was adopted in backstepping controller design of pitch channel missile control system. Not only the outer disturbance but also the inner uncertainties of missile model can be estimated by two disturbance observer. Also the stability of the whole system was proved...

TV documentary with documentary style and humanistic quality is an important path to intercultural communication and effective carrier. Chinese documentary creative vision need to globalization, cultural resources with the strangeness and commonality, who spread the idea of the diverse demands of the...

This paper aims at designing a set of FPGA based phonetic intelligent home system, wherein this system completely adopts wireless communication technology to avoid rewiring problem and can control home appliances through voice recognition and infrared sensor, thus to phonetically turn on or turn off...

Using the concept of migration preference index, this paper first calculates the comprehensive out-migration indexes, the migration preference indexes of outside Anhui province from 2014 to 2018, then conducts a multiple linear regression to model the migration preference indexes, and puts forward the...

This paper discusses the significance and research status of steel corrosion detection. This paper briefly analyzes several important detection methods and their application characteristics. The advantages and disadvantages of the present research methods are discussed. It puts forward the necessity...

Translation is not only a cross-language communication behavior, but also a cross-communication process and cultural exchange activities. Humans have spread its own culture began performing, spread the promotion of cultural development and communication between different language cultures that belongs...

Indonesia has advanced to a new technological development era via digital television. The challenged was adopted in 2009 and later on was revised through the Regulation of Ministry of Communication and Informatics Number 6 Year 2017 about the Management of Internet Protocol Television Services (IPTV...

The pot experiment was conducted to study the effects of applying the hyperaccumulator plants (Bidens pilosa, Youngia erythrocarpa, Solanum photeinocarpum and Galinsoga parviflora) straw into soil on growth and cadmium (Cd) accumulation of Brassica chinensis. Compared with the control, applying hyperaccumulator...

Diffusion-weighted magnetic resonance (DWI-MR) technique is a promising imaging method for lung cancer diagnosis. The purpose of this study is to investigate whether DWI-MR can differentiate lung cancer from infectious nodule accurately. Approved by institutional review board, this study included DWI-MR...

As the OTN (Optical Transport Network) and SDH (Synchronous Digital Hierarchy) network lack the uniform monitoring system to monitor the ever-growing business, this article has presented that use existing TMS to monitor provincial levels transmission network's double plane. While inspected and commanded...

Multi-objective programming with uncertain information has been widely applied in modeling of industrial produce and logistic distribution problems. Usually the expectation value model and chance-constrained model as solution models are used to deal with such uncertain programming. In this paper, we...

The energy recovery from sewage sludge has been turned out to be vital solution to the sludge problem. This study focused on the conversion of sewage sludge into syngas production. The effects of pyrolysis temperature and pellet size on syngas yield and composition were studied. The influence of operation...

Based on the ecosystem theory, this paper summarizes the meaning and characteristics of the maker space, and defines the ecosystem of the maker space, using three dimensions??"??"the customer ecosystem, the resource ecosystem and the maker spirit, and analyzes the marker space’s three core mechanisms：entrepreneurial...

As information technology and accelerating the process of the network, many companies, schools or government agencies are densely covered with a variety of weak lines, of which both China Unicom's mobile telecommunications network cable has a telephone line and broadcast television Some TV lines. Although...

This study describes indigenous institutional studies and Common Pool Resources. This research uses qualitative methods by collecting data through interviews, as well as FGD (Focus Group Discussion), and is supported through the support of credible reports and journals to strengthen a credential analysis...

Early childhood music education music teaching is part of this early music education offers young children the opportunity to develop their musical talent, and it is what most adults can give to take care and nurture for children. In kindergarten music activities, the combined "Listen and sing" music...

In this paper we proposed an algorithm for classification of handwriting number which use depth of the structure of the simple convolution neural network-- PCANet Network with data augmentation. PCANet Network with data augmentation consists of four parts, one is data augmentation, two is the basic PCA...

Knowledge-intensive services trade as the core of knowledge, technology and its application is becoming the most im-portant part and competition hot in the international services trade, which has accounted for a large proportion of its total trade. In this paper, the method of factor analysis is used...

The pot experiment was conducted to study the effects of colchicines on cadmium (Cd) accumulation of post generation of Bidens pilosa. The 0.3 % of colchicines treating with 48 h did not change the number of chromosomes in two ecotypes (farmland ecotype and mining ecotype) of B. pilosa. The colchicines...

Macroeconomic volatility and bank credit influence each other, the relationship between them attracted a wide spread attention after the financial crisis in 2008. Thus this paper did the research on Credit risk and bank credit behavior of our country. We found that the credit risk has a pro-cyclical...

This paper deeply explores the mutual influence relationship between the components of smart construction site, and selects 16 practical application elements of smart construction site from three aspects of technical facilities, functional requirements and organizational management. The method of combining...

Using RSR method and SPSS software, this paper constructs a comprehensive evaluation system of digital business environment from six dimensions: public service, human resources, market environment, financial service, innovation environment and basic digital economy, and comprehensively evaluates the...

Since general secretary Xi Jinping has been in power, he has put forward a series of new ideas, new ideas and new judgment to examine and grasp the work of Xinjiang in a broad strategic vision. It is, further researching and analyzing the great significance, core content and theory characteristic of...