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Additives, printing ink and other chemicals in packaging may influence safety of the food. Standard solutions of eight organic compounds were prepared. By gas chromatography and mass spectrometry technology, benzene, isopropyl alcohol, ethyl acetate, ethyl benzene, cyclohexanone, m/p-Xylene, o-Xylene...

As the world’s lungs, forests have provided foreign exchange to the country’s second-largest income after the non-oil and gas sector. For this reason, it needs more efforts to protect and save forests with all their potential. Government policy restricting, controlling, and regulating the issue are the...

This study presents the design and performance analysis of a producer gas cleaning system for a downdraft gasifier used to process Segregated Dry Municipal Solid Waste (SDMSW) and biomass. The cleaning system is critical to remove impurities such as particulate matter, tars, and other pollutants from...

In this article, we will study the principle of photo catalytic reaction and explore the chemical reaction occurring in the process of deodorization of industrial wasting gas with the combination of the actual situation of Chinese modern factory .We will analyze the reaction principle by using some actual...

It is hard to get the pressure of high speed water column on the inner barrel through the gun water-projectile test. In order to optimize the design, the calculation model of the pressure in the body tube is established. Two dimensional numerical simulation was carried out for gun water-projectile test's...

The Ice Silk Road, one of the routes of the New Silk Road project, is being actively developed by Russia and China. The most important part of the Ice Silk Road is the Northern Sea Route. The article considers the interests of Russia and China and shows that in creating the Ice Silk Road, the interests...

Movable water saturation can accurately evaluate the formation of gas and water layer. It is an important parameter to guide the development of tight gas reservoirs. Engineering often used single factor of porosity to estimate saturation of the movable water. And in the formation of strong heterogeneity...

By analyzing the overlying strata caving characteristics and properties of porous media that a heterogeneous porous media properties mined crack rectangle landings is formed in the mined-out area. Introduction of translation-diffusion equation and to simulate the flow of gas diffusion behavior; by the...

The consecutive layer of a nickel alloy was deposited onto a GH864 nickel-based superalloy gas turbine engine blade using laser cladding. To ensure the performance of blade, the gas turbine with laser cladding repaired blades worked two weeks and a detailed measurement and investigation were performed...

For further research on microscopic pore characteristics and its geological accumulation significance of coal bed, coal samples from drilling holes of Baode, Shanxi province in China were collected to perform scanning electron microscopy (SEM), mercury injection and low-temperature nitrogen sorption-desorption...

According to the development trend of green shipping, liquefied natural gas (LNG), as a marine fuel, has obvious advantages in safety, economy, environmental protection and so on. It has gradually became the first choice of ship power fuel in the future. The planning and construction of Marine LNG filling...

New ultrasonic-assisted argon-arc clad injection technology was adopted, and Ni60A was as cladding powder, TiC, TiN, WC, and Co powder as spraying powder, thus Q235 steel plate was strengthened with Ti(C N) particle reinforced the nickel wear-resistant coating. The influence of the coating thickness...

The process of exploration and production in coal mines have many potential dangers so the coal mine safety problem has become the focus of social concern.Mine gas early warning system is an important measure that guarantee coal mine safety production because coal mine gas explosion is an important cause...

Based on the actual operation of the simulation data and adopted PLC program control, it can become an independent system, by sampling, purging, gas sample, sample pretreatment, gas analysis, instrument calibration, program control and the signal output and other parts, and will be assisted with CO probe...

On the basis of understanding the reservoir characteristics of Block S, this paper established the sand body and oil reservoir property model with geostatistical inversion data, in combination with geological modeling technology and petrel software under the restriction of sandstone vertical probability...

Due to the actual problems of the poor real-time performance on the original physique test equipment, a kind of wireless intelligent comprehensive physique test system is studied. By using the high precision special signal disposal and A/D conversion module, the anthropometric parameters are achieved....

A novel electricity- Compressed Natural Gas (CNG) multi-compression process using natural gas pressure energy is proposed. Compared to electricity-CNG single-compression process using natural gas pressure energy with the same CNG product, the multi-compression process produces 92 more kW power. In this...

As the auxiliary preheat device for vehicle, vehicle preheater has been widely adopted for vehicle cold starting, preheating and defrosting. The three-dimensional geometric model of preheater is established in this paper. The combustion process of preheater with different structures has been simulated....

The secondary effluetn of Printing and Dyeing industry wastewater is a typical low load and refractory wastewater. The COD concentration is between 150-200 mg/L. In this pilot study, the treatment effect of lignite-coke and ceramic filter BAF was investigated. By comparison with the laboratory scale...

The environment suffers greatly from industrial pollution, which emits harmful gases such as sulfur dioxide and carbon monoxide. These emissions lead to the formation of smog, acid rain, and global warming, besides adversely affecting the respiratory system. In comparison, the high concentration of carbon...

Gourds include watermelons, melons, zucchini and pumpkins, which occupy large areas and belong to large-tonnage crops. To increase the efficiency of processing the fruits of gourds is possible due to the integrated processing of their seeds. The problem of rational processing of gourd seeds with the...

This paper uses ICEM and the FLUENT CFD module of ANSYS software to do numerical simulation of Sterling engine combustion chamber 3D model, to reflect the the turbulent flow characteristics of engine combustion chamber in the Sterling velocity field distribution, further, according to the analysis re-sults,...

The process parameters were optimized by bead weld in high nitrogen austenitic stainless steel with 12mm thickness. High nitrogen austenitic stainless steel plates with 20mm and 40mm thickness were welded with the optimum process parameters. The mechanical properties of weld joints were inspected. The...

As an excellent tear agent of the second generation, CS has been widely used in the police department of many countries. CS disperses the crowd depending on the aerosol in the air due to combustion and explosion. And at the same time, CS decomposes into a variety of products. With the use of TG/DSC-FITR...

A mixed explosive contains Al powder, hexogen (RDX), paraffin, etc. It is pressed fitting into 20×20mm pillars. The pillars are heated in 55C for 57days and are measured in volume, mass and density. They are experimented in mechanical properties, sensitivities, stability. The micro-structure of the pillar...

Flow characteristic of cold fluid in supersonic combustion experiment table is studied through the method of computational fluid dynamics (CFD) numerical simulation, direct measurement of pressure transducer and TDLAS measurement. Characteristic parameters of temperature and pressure etc. of the flow...

The main corrosion reason of water injection pipeline in YanChang oilfield is carbonate ions (or carbon dioxide gas) combined action of salts. The aim of the paper is to study the corrosion reason of the water injection pipeline in YanChang oilfield in order to develop an effective corrosion inhibitor...

At present, the world is experiencing a climate change whose main feature is warming, which has become the crisis and challenges of the world. Low-carbon economy is the best pattern which reduces greenhouse gas emission and global warming. This paper analyzes the urgency of developing low-carbon economy...

The paper applies CFD numerical simulation technology, selects the typical urban commercial block as the research object, uses PM10 which are from automobile exhausted gas as the source of pollution, simulates the spatial density distribution of the inhalable particle, verifies the accuracy based on...

Because of the characteristics of the GIS equipment gas leakage, the paper used the acoustic emission technology to carry on the corresponding experiment to the GIS equipment. These tests included the detection of qualified GIS equipment, the detection of the leakage of simulated GIS equipment and the...

According to the actual structure and working condition of a high-flow gas pressure control valve in cycle power generation project, 3-D model based on Fluid-structure Interaction (FSI) is set up. A combined calculation for turbulent flow and structure response of high-flow control valve was established,...

In the large water trawler system work process, trawlers are influenced by the marine environment, can produce large movement, which seriously affect the drag efficiency. This study is based on a wave passive compensation device, establish its mathematical model for the simulation analysis, design the...

The relocation of the national capital city from Jakarta to Nusantara, East Kalimantan as a program from the government for the transformation of Indonesia based on innovation, technology, and a green economy reaps many pros and cons. One of them is related to food security, this is because in 2024 according...

This paper introduces the status quo of current heat treatment procedure of aluminum alloy castings,Heat treatment furnace burner uses cold air as a fuel and the resulting emissions are directly discharged to the atmosphere instead of being recovered, so a great number of residual heat resources are...

The oil and gas suspension is the important part of the type special vehicle. This paper introduces the working principle of the special type vehicle oil gas suspension system, and the multifunctional experiment debugging platform is designed based on PROE modeling technology, and it is used to inspect...

In order to investigate the liquid fuel combustion in gas turbine engine, the velocity of field and temperature of combustor in lean fuel injection model were numerically simulated and compared with the experimental data. The results show that the Realizable k- turbulence model can simulate the combustion...

In microfluidic chips, the micro droplet jetting is a key technology to control the droplet volume by micro-channel. The micro droplet in micro-channel is highly concerned on the two-phase or multi-phase slug flow, in which the two-phase streams can form two kinds of micro droplets steadily. This paper...

Experience of bachelors’ training in heat, gas supply and ventilation in the Republic of Sakha (Yakutia) is considered in the article. Operation of engineering systems in the region is characterized by severe climate conditions: permafrost, difference in temperature from - 71°C (winter period) to 38...

Thermoelectric coolers (TECs), operating through the Peltier effect, are a solid-state means of temperature control with no moving parts, mechanical vibrations, or refrigerant gas. In this paper perform systematic analysis of TEC technology beginning from its historical evolution and basic operational...

The objective of this work is to investigate experimentally the oxidation behavior of micron-sized aluminum particles with controlled thickness of alumina passive layers in oxidized environment. Samples in four different sizes were studied using differential scanning calorimetry, thermogravimetry analysis...

The culinary industry in Indonesia has experienced significant growth, contributing 38.38 percent to the country’s GDP. However, food waste remains a major environmental issue, with food losses accounting for 8% of greenhouse gas emissions. This research focuses on Restaurant X, a renowned dining establishment...

The paper presents the results of researching the influence of the mode of creating photocatalytic coatings of glass substrates by the method of reactive magnetron deposition on their bactericidal properties. Tatanium dioxide (TiO2) is in the basis of used film photocatalytic coatings. When depositing...

Employee performance is a key factor in determining a company’s success. However, performance-related issues still occur across various sectors, including government agencies, oil and gas, expeditions, regional water companies, manufacturing, and banking. PT Regional Development Bank West Java Banten...

Green mobility presents significant issues in cities that continue to rely on fossil fuel vehicles, which contribute to greenhouse gas emissions and climate change. Air pollution from traditional transportation has a substantial impact on public health and increases reliance on fossil fuels, which are...

In recent years, many country are vigorously developing natural gas mining technology, the supersonic expansion dehydration is a new natural gas dehydration methods, which has many advantage. Based on this background, this paper aimed to analyze the flow field in supersonic expansion dehydration of Laval...

In this work, the spectrum of nitrogen triboplasma light emission and the influence factors of the light intensity had been investigated by a reciprocating friction experiment platform based on the quartz and polytetrafluoroethylene (PTFE) as the friction pair. The results show that the spectrum of nitrogen...

We prepared amorphous GaAs (a-GaAs) films by an RF magnetron sputtering method and investigated the influence of working pressure on the structure, composition, optical and electrical properties. The experimental data suggest the films prepared above 0.5 Pa are amorphous and the Ga to As concentration...

CFD simulation method and PIV technique provide efficient methods to reveal the highly complicated internal flow situation of fluid couplings. Although there are quite a number of papers adopting these two methods to analyze the internal flow situation of fluid coupling, most of which only consider single-phase...

In this paper, through the Xinji a mine surface drilling borehole pressure relief gas for practical investigation and study, analysis of the layout of the ground drilling, the influence scope of ground drilling drainage is investigated and analyzes the drainage effect and the economic benefit brought...

Offshore oil and gas industry operates daily with the maritime facilities supported by subsea cable. Disruptions or damages to the subsea cable can inevitably stop the production processes. In the recent years, the Company is facing multiple challenges in its relatively large operations area of 8.000...