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Spent coffee grounds contained 45% carbohydrate, 26% lignin, 13% lipid, and 13% protein. To improve the value of spent coffee grounds in a sustainable way, a study was done on how to convert carbohydrates into fermentable sugars which could be used to make value-added products. To accomplish this, a...

The paper construct the factor decomposition model based on SDA, with the idea of jointly created and equally distributed. The model is used to analysis the energy cost change of freight hub for example. Through the analysis and calculation of the energy consumption data of freight hub, the conclusion...

The flowing bottomhole pressure (FBHP) of gas wells was affected by many factors. Although a lot of research works have been done to predict the FBHP and at least more than ten models were proposed, but no one can effectively provide an accurate results for all ranges of production data and conditions...

In the study, the AVL-FIRE software had been adopted to numerical effect analysis on combustive process of the engine. The result shows that numerical simulation results are consistent with the tested pressure, ignition point of ignition diesel is 2 ø CA ATDC, ignition point of natural gas is 2.25 ø...

As the challenges associated with developing carbonate reservoirs intensify, acidized fracturing has emerged as a crucial method for facilitating the efficient extraction of oil and gas. Slickwater fracturing fluid is the most commonly utilized among these options. Nevertheless, its drag reduction capabilities...

In view of the existing problems in the coal sample collection method of the coal seam gas content, a sampling method of fast sealing and sampling in coal seam drilling is proposed and the method's control signal can achieve the non-contact transmission by electromagnetic induction principle. The equivalent...

In order to overcome the disadvantages of the existing negative pressure adsorption methods, a new structure of non-gas source negative pressure adsorption is proposed. On the basis of this structure, a physical prototype was made. According to the motion model of the prototype, the stability condition...

April 10, 2017, carrying 140,000 tons of crude oil "joint power" successfully berthing Myanmar Buddha Mude Island, and began to unload crude oil, which is a landmark moment, the Sino-Burmese crude oil pipeline project put into operation China-Myanmar oil and gas pipeline is China's Kazakhstan, Central...

The multichamber device belongs to pulsed methods of forming and is mainly intended for use in small-scale production. The process of forming is carried out under pressure of an elastic disk due to kinetic energy of the piston accumulated throughout the working cycle. The piston is accelerated under...

Based on the requirements of an experiment, this paper designs a gas sampling instrument with distributed design method, and realizes the automatic collection of toxic samples and real-time communication in multiple points within an enclosed space, providing certain material conditions for the successful...

In the rapidly evolving business environment and intense competition, including in the LPG distribution industry, companies distributing subsidized LPG must be prepared to compete. To remain competitive, businesses need to enhance customer satisfaction to ensure long-term sustainability. Price and distribution...

3D geological modeling technique, as a comprehensive characterization method for oil and gas reservoirs, is widely applied in the process of oil and gas field development. Addressing the challenge of unclear geological characteristics in the early exploration stage of atmospheric shale gas reservoirs,...

EGR system is electronically control system for exhaust gas recirculation. This article conducts a detailed research on the EGR control stagy by a systematical elaborate on development procedure, a profoundly discussion to the components and structural software design, an overall consideration to the...

Long-distance pipeline has always played a significant role and kept its basic position in the West-East Gas Transmission and West-East Oil Supply programs in China. If natural gas or petroleum is not supported by pipeline, its transmission will be inevitably more dangerous to some extent. The study...

In order to specifically support the technology trend of increased miniaturization of Micro Electro Mechanical Systems (MEMS) devices, highly porous ZrCoCe non-evaporable getter (NEG) film has been produced by DC magnetron sputtering from a preformed ZrCoCe alloy target. The porous film is composed of...

Down pushed flow anaerobic reactor (DPAR) was adopted in the paper to reveal the yielding gas process by taking swine manure as the material under different volume organic loading (3.11, 4.44, 5.78 gTS.L-1.d-1) and to detect the optimal volume organic loading for semi-dry fermentation of swine manure....

Hanil Jaya Steel company is engaged in reinforcing steel fins with various deformed and according to the Indonesian National Standard (SNI). The product produced by this company is Reinforced Iron or commonly known as Esser Concrete. One of the most important processes in the manufacturing stage of reinforcing...

In the absence of urea, urease is demonstrated to catalyze the hydrolysis and polycondensation of the SnCl2 aqueous system to form crystalline mesoporous SnO2 at room temperature. The resulting SnO2 has a high specific surface area of 231~248 m2 g-1 with uniform pore size at 3.3nm, and the porous structure...

This research was done to investigate the effect of blend essential oil EOs1 with pine (Pinus merkusii; Jungh. and de Vriese) essential oil as the main component on feed nutrient digestibility and methane production. Blend essential oil consist of pine and eucalyptus (Melaleuca leucadendra (L.) essential...

Improving the efficiency of balance control in the gas transmission system is an urgent task. Applying intelligent techniques such as artificial neural networks or adaptive hybrid neural fuzzy systems (ANFIS), combining the advantages of neural networks and fuzzy logic, could be such a solution. The...

The Implementation of public sectors such as transportation, oil and gas is done by the government as a regulator and the State Owned Enterprises as operators. First, the form of business was a state company. Next, it was transformed into a public company which later has become a limited liability company...

Rock burst is one the world's worst coal mine disaster, rock burst accident-prone nature and severity of injuries to become one of the focus of attention, rock burst is an extremely complex dynamic phenomena, is home to cutting-edge research topics of major coal mine safety. Rock burst prevention is...

The statics mechanic model of the casing-cement-formation is established in this paper. Effects of formation and cement characteristics on casing strength are studied under injection-production condition. The examples show that the maximum stress occurs in the internal wall of the casing, along the orientation...

The Index of innovative development of the Ukrainian Economy for 2007-2017 is calculated on the basis of the additive model, the principal components method and the sliding matrix, as novelty. The tendency of its decrease and the problem of commercialization results of scientific and technical activity...

On the basis of the finite element method (FEM) a mathematical model of the modular structure of the turbomachine exemplified by the aircraft gas turbine engine, AL-31F, is developed. It is notable for describing the solution of interdependent problems of the theory of elasticity and thermal conductivity,...

Lithium ion battery and its safety are taken more consideration with fossil energy consuming and the reduction requirement of CO2 emission. The safety problem of lithium ion battery is mainly contributed by thermal runaway caused fire and explosion. When the lithium ion battery fire and explosion, gases...

Oil and gas resources are the important constrains of China's economic development. The research about the risk status of oil and gas resources has important practical significance for the national economy development. Based on the view of the exploitation of overseas oil and gas resources, this paper...

The authors raise the issues of digitalization in the leading companies of oil and gas industry in terms of the energy transition. In addition, the paper also proposes policy recommendations for the low-carbon transition of oil and gas companies. The core concept of the company’s transition is a transition...

Under the background of economic globalization and regional economic integration, the associated economic losses caused by disasters to relevant regions and industries have increasingly become the focus and difficulty of people's attention. Based on the multiregional input-output model (MRIO model),...

The processing results of the extensive statistical material characterizing the level of power consumption of Kuzbass coal mines are presented. At the same time, in the formulation of the research problems, the authors have come from the fact that the power consumption of mine is a function of many variables....

Fabrication of thicker coating by induction cladding could achieve excellent properties, such as wear resistance, corrosion resistance, heat resistance and so on, and also was an important technology for machinery parts remanufacturing. Used the mixture of Ni60 and SiC powder as coating materials, discussed...

To realize its investment, the Province of Jambi must have an information feasibility that can guide the investment feasibility study. They required preliminary data on pre-eminent commodities in the districts/cities, descriptions of the land types suitability and factors that are expected to affect...

During the operation of an LNG receiving terminal, the fluids within the feed pipes are typically low-temperature media such as nitrogen and liquefied natural gas. The pipelines frequently operate under ultra-low temperature conditions, and rapid temperature changes often lead to issues of thermal expansion...

In recent years, as a consequence of the rapidly increasing energy price and more and more stringent energy-saving and emission reduction policies, many effective measures have been taken by the majority of the coal-fired plants in China, including improving the power plant efficiency, reducing the unit...

The common ultra-low emissions transformations for coal-fired power plant are low-temperature coal economizer transformation, high-frequency power, and wet electrostatic precipitator and so on. This paper aims to research the effect of fiber reinforced plastics (FRP) flue on the pollutants emission via...

The waste problem commonly is almost the same in every big city. When it is not managed properly, it will be piled up very quickly. The city of Jambi produces approximately 1,838.48 m3/day of waste. Organic waste originating from market waste in Jambi City is dominated by vegetable waste, so that its...

Indonesia, renowned for its vast natural resources and strategic position in global trade, draws an influx of international traders. This dynamic cultural exchange has historically enriched Indonesia’s heritage. Coffee, a cornerstone of Indonesia’s export economy beyond oil and gas, possesses untapped...

With the soaring prices for fossil fuels such as oil and natural gas, renewable energies become hot energy resources to pursue to sustain the energy consumption demand worldwide. Among different types of renewable energies, solar energy is deemed as a promising energy resource due to the abundancies...

Earth pressure is usually measured by the earth pressure cell. Calibration parameters from the manufacturer is often obtained conducting calibration in the gas or liquid systematically with a set of pressure, which can not be used in soil test directly. Therefore, in order to find out a well-matched...

In this paper, in order to obtain performance of marine natural gas/diesel dual fuel engine on exhaust gas recirculation (EGR), the AVL-FIRE software had been adopted to numerical effect analyze of different EGR on combustive process and emission of the engine. The result shows that numerical simulation...

Three kinds of optimization evaluation method of distributed combined cooling heating and power (CCHP) system are analyzed, including thermodynamic performance evaluation method, environmental characteristics evaluation method and economic evaluation method. The objective function is determined as the...

The erosion of heating surfaces due to chloride release from direct rice husk combustion was investigated. Relationships between chloride release from rice-husk combustion and different influence factors were studied, and chloride release models were established. A gas-state chloride absorption testing...

With the novel coronavirus (COVID-19) wreaking havoc around the world in 2020. It led to a heavy blow to the performance of representative enterprises in the energy, aviation and other industries. Resulting in a linkage effect that led to a sharp reduction in the demand for oil and gas resources, which...

A The level of air quality in a place makes a measure of cleanliness against air pollution. Likewise with closed areas such as indoors. The percentage of gas trapped in the room is much higher than in the open. This is because in the area there is activity in and out of the air that can cause air pollution...

The manuscript is devoted to nonisentropic solutions of simple wave type of the gas dynamics equations. For an isentropic flow these equations (in one-dimensional and steady two-dimensional cases) are reduced to the equations written in the Riemann invariants. The system written in the Riemann invariants...

Compressed air is considered to be the second electric power energy in the industrial applications, the energy consumption accounted for about 9% of the national industrial power consumption, study the compressed air system is of great significance. This paper studies the frequency conversion constant...

With the acceleration of the globalization of the world economy, deepening of China's reform and opening up, improvement of economic development level and living quality, demand for environmental quality has been continuously enhanced. With the acceleration of the process of industrialization and urbanization...

The LNG market is characterized by growth and volatility, change of operating conditions. The Baltic states create a gas infrastructure of LNG which is independent of the Russian Federation. Russia has not created the complex strategy of LNG production and export. The research objective is to study the...

The study aims to describe the implementation of Corporate Social Responsibility (CSR) program at an Oil and Gas State Company PT Pertamina EP Asset 3 Cirebon in Klayan Gunung Jati Cirebon as well as the image from the surrounding society toward the company due to the programs.The techniques of collecting...

Based on coal and gas outburst factors, combined with single gas risk index and comprehensive evaluation method to select evaluation index, in order to evaluate coal and gas outburst, evaluation of coal and gas outburst is established t-s fuzzy neural network model. Combined fuzzy logic and neural network,...