bluuebunny/crossref_metadata_2025 huggingface dataset:
Analyzing the Condition of Gear Module Using Internet of Things
Authors: Venkatesh T , Jamuna R , Bharath G , Arunprasath M , Nishaji A
Published: May 2021

This project is focused on the use of the Internet of Things Vibration Detection. The assessment of passing motions in a system is vibration control. When unusual vibrations are detected, this project involves developing an SMS alert. It requires a laboratory-based vibration detection experiment when applying the different magnitude of the force. This force causes the sensor’s values to change from their initial values. Acceleration values can be seen on the webpage and, if necessary, analysis can be done. The warning signal will be produced considering the maximum magnitude at which destruction is high. Using GSM technology, this message will be sent to various mobile phones. Properly performed, vibration monitoring can be extremely useful in identifying the extent of the damage and assessing the origin in order to avoid damage to structures. We are currently using our key parts, the Arduino microcontroller, the accelerometer sensor, and the GSM module. The Arduino Uno microcontroller’s code is written in C++.
Directivity Enhancement in UWB Microstrip Patch Antenna
Authors: Balamurali S , Asvitha R , Deenadhayalan S , Ishwarya S , Kaavya Varshiny A
Published: May 2021

A portable Ultra Wideband (UWB) antenna for wireless applications. The ground plane of the intended antenna seems to have an extra open-ended inverted slot. The antenna has a good radiation pattern, propagation pattern, impedance bandwidth, and gain, and it can operate in the frequency range of 3.1-10.6 GHz, which is perfect for UWB applications. The antenna is small, measuring 38.87 × 24.00 mm2. The proposed antenna is ideal for wireless applications because of these features.
Smart Traffic Control Scheduling in Smart City Signal Control
Authors: Kirubakaran S , Santhosh S , Tamilselvan S , Varunika G , Vishnu K
Published: May 2021

The most critical concerns in urban life are increasing population growth and an increase in the count of vehicles on road, tends to traffic congestion. Traffic signal control devices are commonly used to track and monitor the vehicles. Traffic congestion leads to air and noise pollution and many health issues. Therefore, this project reduces time and fuel consumption. In this project, a video processing technique is used to present a new approach for controlling traffic light. The developed model evaluates the traffic light scheduling based on the count of vehicles. Raspberry pi is used to execute it.
Safety Monitoring System in Coal Mine Using IoT
Authors: Sathishkumar N , Manoj A M , Muniraj K , Naveenkumar M , Praveen C
Published: May 2021

The key abstract is to use IoT to incorporate a coal mine safety monitoring system. The extraction of coal from the field is known as coal mining. Coal is used as a fuel in the steel and cement industry to extract iron from ore and to manufacture cement. Every parameter in the underground mining industry must be controlled on a regular basis, including methane gas, high temperatures, fire incidents, and so on. The level of safety in coal mines is still poor, resulting in fatalities. A coal mineshaft salvage action is profoundly perilous because of various elements. It is particularly risky for rescuers to enter a coal mineshaft burrow in a debacle without earlier attention to the climate on the grounds that ensuing blasts are probably going to happen at any second. It is along these lines basic to recognize unstable climate data like toxic gases and high temperatures, just as to direct a visual review of excavators caught in a fell passage through the imploded burrow. These information would aid rescuers in devising a strategy and equipping themselves to carry out the rescue operation defensively. This paper proposes a design for coal mines that will reduce the damage caused by a coal mine accident and allow for a more effective rescue operation.
Speaking system for speechless people using Flex sensors
Authors: Singaram M , Aravin P , Dharshine NA , Ganesh P , Gokul E
Published: May 2021

The most critical capacity of human beings is to interact (i.e., express their emotions, opinions and feelings) with each other. We cannot overstate the use of communications. In particular, it is very difficult for unspeakable people to communicate their meaning to ordinary people, since there are more than 300 sign languages, and it is difficult for an average person to learn and use these languages. As a result, unspeakable people face numerous irritations and frustrations that limit their ability to fulfill their regular tasks. Different psychiatric services are available to the muted population in order to get their speech back, but the expense of these treatments is costly enough that no one can afford them. ere we suggest a smart speech device that allows voiceless people to communicate their message to ordinary people using hand movements and gestures. The system uses hand motion reading with the aid of flex sensors along with a microcontroller (Aurdino) unit.
The estimated of 18.1 kDa class IV small heat shock protein (sHsp) from Hevea brasiliensis using of PHYRE2 and SWISS-MODEL software
Authors: Pasaribu S A , Basyuni M , Purba E , Hasanah Y
Published: May 2021

The objective of research is Hevea and Ricinus which are two of the latex-producing plant species. The modelling of protein was obtained from Hevea brasiliensis and Ricinus communis. Identification of small heat shock heat protein 18.1kDa very different between hevea and ricinus to coverage 92% and 69% analyzed by SWISS-MODEL. In addition, the data from similarity, identity, range, and Q-mean were distinct. According to the PHYRE2 analysis, we observed the residue presenting in Hevea and Ricinus not much different (Hevea: 12-158; Ricinus: 11-156). The 3D-ligand site prediction confirms is not found in Hevea as well as Ricinus. Appropriately, the small heat shock protein involved in different species will be helpful in the development of stress tolerance in plant crops, the different homology images and templates were identified as different binding site predictions. These models can be used for supporting the Hevea and Ricinus proteins modeling, mainly in the molecular study.
The Use of Dual and Surge Irrigation to Improve The Efficiency of Surface Irrigation
Authors: Aljumily A.M.H. , Al-Hadeethi Isam K.
Published: May 2021

A field experiment was conducted in a farm(5km northwest of Ramady City) during Autumn Season in a silty clay loam sedimentary soil. The ground water table depth is 120 cm. Field has divided into 10 strips(2.40x80)m with spaces 1m between strips and 2 m between replicates each strips has divided into 3 furrows (20 cm in depth, 80 m length,with 0.2% slop) with each others.Study factors included Contineous Irrigation (conventional), Dual Contineous irrigation, Contineous irrigation with two phases, Surge irrigation, Dual Surge irrigation Cycle ratio was 0.25 with time On-time 4 minutes and off-time 12 minutes for both dual surge irrigation and surge irrigation with discharge of 2 litter/sec. for both advance phase while the discharge after completing advance phase was 0.8 litter/sec. The plots were planted with corn(Zea mays L)and irrigated drainage water with salinity 5.8-6.2 ds/m, and Euphrates water (1.1-1.3 ds/m). Consumptive water use was calculated by Evaporation Pan method. Twenty test has been carried out for advance and recession of flow along furrow by using eight observation stations. Apportinity time and absorbed water depth in each middle furrow was calculated at each station. Practical and Theoretical relative yield of corn were calculated.Results showed that Dual Surge Irrigation system reduced of salty water used to complete advance phase with rate of 12.41% comparing with Dual Contineous irrigation system, The efficiency of Salt- water displacement proceeses downward increased by 11.56%. by the effect of fresh water under Dual surge irrigation system compared with Dual Contineous Irrigation system, The percentage fresh water saving reached to 44.94% and 51.30% in dual surge and dual Contineous irrigation system respectively, Insert Surge Irrigation technique on Dual Contineous Irrigation system leads to reduce salt- water advance phase time, late in recession time in Dual surge Irrigation and Surge Irrigation with the other treatments during advance and post- advance phase, distribution of Dual surge Irrigation system as compared with dual Contineous irrigation system in salt- water distribution efficiency during advance phase and uniformity of total absorption depth along the furrow for all testing months during the season, theoretical relative yield (RY%) has decreased gradually with increasing in depended depth for calculating the average soil salinity (ECe) with assumption of no mixing between fresh and saline water, practical relative yield exceeds the theoretical relative productivity when assuming the condition of mixing between fresh water and salt water, the practical relative yield has distinction on the theoretical yield at depth of 0-90-cm in Maas 1984 equation.
Analysis of Many Fatty acid and Volatile Oils in Some Ganoderma spp. Using Gas –Liquid Chromatography Technique
Authors: Saadoon H. F. , Khorsheed A.Ch. , Abdul-Hadi Sh. Y.
Published: May 2021

Natural compounds are regarded as one of the best important natural sources for getting effective compounds, especially indifferent medical fields due to the nature of their composition. One of these fungi is Ganoderma spp presented in Iraq. In this study, the fatty acids were isolated from the fruiting bodies of Ganoderma spp under study, calculating their concentration and identification with Gas–Liquid Chromatography technique. fatty acids compounds which were separated and including Butyric acid, Myristic acid, Palmitic acid, Heptadecanoic acid, Stearic acid, Oleic acid, Linoleic acid, Arachidic acid, Eicosenoic acid, Linolenic acid, Erucic acid, Arachidonic acid, Tricosanoic acid, docosadienoic acid, Nervonic acid. Also, Volatile oil compounds were separated by the light clevenger device and identified with GLC– technique, volatile oils were included Camphor, Sabine,Terpinen, Myrcene, Limonene, Cineole, Linalool, a-Pinene.
Genetic Path Analysis and Correlation Studies of Yield and Its Components of Some Bread Wheat Varieties
Authors: Abdulhamed Z.A. , Abood N.M. , Noaman A.H.
Published: May 2021

The research was applied in one of the farmers’ fields in Al-Khalidiyah / Anbar Governorate to determine the most appropriate traits to improve the yield of wheat grains during the two seasons 2017-2018 and 2018-2019. The experiment was carried out according to the randomized complete block design with three replicates, with aim of studying the path coefficient of the yield and its components for seven varieties of bread wheat (IPA 99, Buhooth 85, Iraq, Abu Ghraib 3, Tamoz 2, Sham 6, and Al-Rasheed). Most of the traits showed a significant positive correlation with grain yield. Also, the results of the analysis of the genetic path coefficient indicated that the indirect effect of the number of total tillers on the individual plant yield through the number of productive tillers, was 0.729 and 0.805 for the two seasons respectively, and very close to the direct effect of the number of productive tillers in the individual plant yield 0.887, 0.920. Also, the direct effect of the weight of 1000 grains on the yield of the plant was positive 0.514, 0.707, for the two seasons respectively, and its negative indirect effect of the number of productive tillers. Likewise, the direct effect was positive for the harvest index on individual plant yield and its indirect positive effect with the number of productive tillers. The study recommends focusing on breeding and improvement programs on the characteristics of the number of productive tillers, the weight of 1000 grains, and the harvest index is the best selection index to improve the cereal yield due to its significant correlation and its direct and high impact on the yield.
The Role of Packaging Technology in The Food Product
Authors: Mahmed A. M. , Mohammed B. H. , Hassen L. K.
Published: May 2021

Food packaging is a life necessity that has evolved and is still evolving to suit the requirements of the consumer and modern society. Commercially manufactured food cannot be processed without packaging and packaging materials, as the World Packaging Organization estimates and distributes that more than 25% of the food is lost due to poor packaging, which in turn places the burden on packaging to reduce the great loss of food through the continuous development of packaging materials. And methods in proportion to the food product. The use of renewable edible agricultural materials which major role in the food industry has increased because the development in technologies to improve the properties of edible polymers is the main issue in future research. Most of the studies today are focused on extending the shelf life of food in the applications of biological or biological membranes and covering food with the most important advantages of edible films that have aroused consumer interest, which are made of natural edible materials, non-toxic and non-polluting to the environment compared to plastic films and increase The nutritional value when present as a film over the food and controlling the water content in the food wrapped in it, whether in not absorbing or losing moisture, as well as protecting it from the absorption or loss of flavors and does not require expensive techniques and thus reduce the production cost and the cost of treating environmental pollution implicitly without. The presence of residues for packaging when used, in light of the wide range of food products such as meat (fish, poultry, beef) and other foods that are very sensitive to fat oxidation and microbial contamination, these products are considered to have edible, antioxidant and microbial membranes very important in their protection targeting innovative trends. In the field of food packaging research in introducing improvements in food quality and safety and increasing the shelf life or period validity as well as quality control based on equipment and international quality standards, where strategies in packaging represent the development of multi-functional packaging materials based on the use of renewable biodegradable materials and natural additives as well as their traditional packaging functions (containment, protection, marketing, provision, consumer.
Numerical modeling of foundation pit dewatering based on Visual Modflow
Authors: Lu Weiping , Chen Zhisheng , Wu Rongpeng , Zhang Zhichao
Published: May 2021

After the investigation of a foundation pit project and the preliminary determination of the precipitation design scheme, the distribution of water level drawdown and land subsidence in the whole site was simulated by Visual Modflow software. The simulation results show that by setting the pump output of the 14 confined dewatering wells in the pit varying from 70 ~ 420 m3/day, the drawdown of the foundation pit can be uniformly reduced to about 4m. Due to the waterproof curtain, the waterline distribution inside the foundation pit is relatively uniform, which proves the rationality of the setting of the pumping well. At the same time, the waterline contour around the edge of the curtain is very intensive, indicating that there is huge difference in the drawdown between inside and outside of the waterproof curtain. The curtain plays an effective role in controlling the drawdown inside and outside the pit foundation, hence, the compression deformation and settlement of the soil are also small so as to avoid the damage of the surrounding buildings due to the uneven settlement of the ground surface. Therefore, the precipitation design has achieved a good effect.
Research on the Influence of Reservoir Physical Property Time Change on Reservoir Water Drive Development
Authors: Ding Xiaohui
Published: May 2021

With the continuous development of China’s social economy, the total demand for energy in China’s industrial production is constantly increasing, among which petroleum energy is an important energy type needed in industrial production. China’s petroleum energy mainly depends on imports, which is very unfavorable to China’s economic development and energy security strategy. Therefore, it is necessary to improve China’s oil exploitation efficiency, increase oil production and alleviate China’s energy shortage. In this paper, the influence of time variation of reservoir physical properties on reservoir water flooding development is deeply studied and analyzed, and some reasonable suggestions and measures are put forward to further promote the development of China’s petroleum development engineering industry. In the oil field developed by water flooding, the long-term scouring force of water will lead to a series of complex physical and chemical changes in the microscopic space of oil reservoir, which will lead to certain changes in the physical parameters of oil reservoir. This phenomenon is called time-varying physical properties. Time-varying physical properties are the main factors affecting reservoir exploration and development, so it is necessary for staff to grasp the relevant technical key points, so as to make clear the changes and the changed reservoir physical parameters. According to the changes, the subsequent work will be adjusted accordingly. Time-varying reservoir will affect the movement law of oil and water in the reservoir, thus affecting the actual development effect of the reservoir, and also affecting the distribution of remaining reservoirs after reservoir development.
Segment Milling Technology in Field Application and Optimization of Gas Storage
Authors: Rui Yiming , Yang Chengbin , Hou Peipei , Luo Wei , Xu Yuexia , Song Yi , Yang Sheng
Published: May 2021

This paper mainly introduces the application and optimization of segment milling technology in the old well plugging project of H gas storage. Based on the analysis of mud properties, segment milling tool structure, and optimization of construction technology. It ensures the safe and efficient completion of the plugging work of HU 2010 well, and opens up a new field for the safe and effective operation of the technology in H gas storage.
Research on Classification Management Method of Xushen Gas Field
Authors: Zonglin Xie , Min Jing , Ruixia Wen
Published: May 2021

Xushen gas field not only exploits volcanic gas reservoir, but also develops glutenite reservoir. In the production process, there are great differences in gas well productivity, formation pressure and single good reserves. By establishing the fine management mode of four types of wells, the “one type, one method, one well, one policy” has been realized. It mainly forms the multi-factor comprehensive production allocation technology with “two optimizations and three control” as the means, improves the winter peak regulation mechanism of withdrawal, supplement and shortterm emergency peak shaving, determines the drainage gas production technology to meet the current development needs, explores the treatment method of easy freezing plugging well with “three-step” as the main method, and effectively governs Low-yield and low-efficiency wells.
Research on Mix Design of Cement Stabilized Recycled Aggregate Pavement Base
Authors: Li Zhiyuan , Chen Feng
Published: May 2021

In this paper, the compaction test of the mixture with different cement content and different replacement rate of recycled aggregate is studied by vibration compaction method. Through the research on the mix design of cement stabilized recycled aggregate pavement base, the optimum content of cementitious materials is determined, and the maximum dry density and optimum water content of each test scheme are obtained. The influence of cement content and recycled aggregate content on the maximum dry density and optimum water content of the mixture is analyzed.
Research and Discussion on Increasing the Coincidence Rate of Water Injection Scheme
Authors: Gong Liwei
Published: May 2021

“Enough water injection, good water injection and effective water injection” is the foundation of water flooding to develop oil fields, and whether the water injection scheme is reasonable and effective is an important symbol of effective water injection. Affected by complex reservoir types and geological conditions, the coincidence rate of water injection schemes in some oilfields is low. In this paper, based on effective water injection, guided by the problems existing in the development of various oilfields, the overall adjustment idea is formulated, and then the injection-production status of single well, single layer and single sand body is analyzed accurately and carefully by comprehensive application of dynamic and static data, so as to implement accurate water distribution. At the same time, cooperate closely with production and management units to ensure timely discovery, adjustment and tracking of problem wells, and strengthen the work of each node, so as to improve the compliance rate of water injection scheme, realize effective water injection in oilfield and improve oilfield development effect.
Application of Chemical Flooding in Increasing Yield of Tertiary Oil Recovery
Authors: Wang Xun
Published: May 2021

This paper mainly explores the application measures of chemical flooding in increasing yield of tertiary oil recovery to. In the research process, taking the overview of tertiary oil recovery as the starting point, analyze that oil extraction can be divided into three stages, tertiary oil recovery as the last link, and the crude oil recovery rate needs to be improved. On the basis of this research, the application mechanisms of polymer flooding, alkaline flooding, surfactant flooding, and ASP flooding are proposed, make actual application measures are clear, so as to provide references for related workers.
Design and Research on Modification Method of Finite Element Dynamic Model of Concrete Beam Based on Convolutional Neural Network
Authors: Su Zhihao
Published: May 2021

Because of the uncertainty of the measurement results, the dynamic inverse problem equation is called the stochastic model correction equation. In order to make this equation or method can be used smoothly in actual engineering, it is aimed at low modal orders and small samples in actual engineering. Condition, this paper proposes a concrete beam finite element dynamic model correction method based on convolutional neural network technology. This method trains the convolutional neural network algorithm by expanding the data set, so that the accuracy of the finite element dynamic model correction method is obtained. Improve, and the method is feasible in actual engineering.
Research on Ecological Environment Protection of Mining Area Based on Yangquan No. 3 Mine
Authors: Wan Yianchun , Zhao Qun
Published: May 2021

[Objective]: To solve the environmental problems of Yangquan No. 3 mine and improve the natural environment of the mine area and its surroundings by reasonable utilization and transformation. [Methods]: Data were processed and superposed through GIS analysis platform, and Yangquan No.3 mine was taken as a case for planning and design. [Results]: The basic conditions of Yangquan No. 3 mine were sorted out, and the land suitability evaluation results were obtained in the GIS analysis platform, and the site layout planning was carried out. To promote the mine landscape ecological restoration work, so as to realize the mine landscape ecological restoration work has made an important contribution.[Conclusion]: Based on the preliminary analysis of Yangquan No. 3 mine, combining with the cultural characteristics of the region to determine the planning and design objectives, and finally realize the overall layout planning of the abandoned mining area.
Study on Ship-based Atmospheric Pollutant Emission Forecasting for Environmental Impact Assessment in Port Planning
Authors: Zhang Yonglin , Li Yue , Li Mingjun , Yang Xiaowen , Cheng Jinxiang , Xu Honglei
Published: May 2021

Vessels are major contributors to port-related atmospheric pollution. In recent years, as the environmental impact assessment s(hereinafter as EIA) in port planning become increasingly standardized, the lens on atmospheric pollution in EIA has gradually broadened from loading and unloading, piling and storage by cargo types to include the impact of ship emissions. However, the impact analysis ship-based atmospheric pollutants in port areas lack quantitative methodologies for accurate calculation, in particular where annual forecasting is commissioned in annual planning. By combining the characteristics of Chinese port planning and mainstream calculation methods of ship emissions in the world, the study arrives at several recommendations on selecting methodologies for the calculating of ship-based emissions in the EIA process that are tailored different planning scenarios and data availability, serving as reference for EIA practitioners in their endeavors to calculate the atmospheric pollutant emissions from ships in the EIA process mandated by port planning.
Research on Emission Characteristics of Non-road Mobile Machinery Based on Power
Authors: Li Yong , Liu Lin
Published: May 2021

This paper takes 3 construction machinery as the research object, uses the portable emission measurer (PEMS) to test the emission in the actual operation of construction machinery. And analyzes the relationship between the operating characteristics of construction machinery and the characteristics of NOx emission and CO emission. The research results show that the NOx emission of construction machinery is positively correlated with power, and the NOx emission change rate is positively correlated with the mechanical power change rate. There is no obvious correlation between the CO emissions of construction machinery and power, and the change rate of CO emissions is positively correlated with the rate of mechanical power change.
Accounting of Carbon Emissions in the Process of Wastewater Treatment from the Perspective of Environmental Protection
Authors: Xiao Jiaqiang
Published: May 2021

Environmental protection has become an important part of my country’s economic development. Sewage treatment is an important part of environmental protection. There are many sewage treatment plants in various regions of the country, with various treatment methods applied, and overall treatment conditions are also different. Theoretically speaking, a large amount of greenhouse gases will be produced in the process of sewage treatment, and it is necessary to account for the produced greenhouse gases in order to ensure the economic benefits of the treatment. Carbon emissions are the most important accounting process, and the accuracy of accounting is a key concern. This article mainly analyzes the accounting boundary of sewage treatment technology, provides a reasonable basis for the accounting of carbon emissions with three commonly used accounting methods, and analyzes related comprehensive characteristics.
Calculation and Analysis of Agricultural Water Flow in Huangqin Reservoir Irrigation Area in Zhongxian County
Authors: Zeng Fengling , Yang Xianwei , Qin Liangqiong , He Hong , Shen Shuhua , Zhang Weihua
Published: May 2021

This paper takes the Huangqin Reservoir irrigation area in Zhongxian County as the research object, and uses the terminal water flow calculation system to measure the water flow at the end of the canal system in the irrigation area. After calculation, the terminal water flow of the final canal system in the Huangqin Reservoir irrigation area after water-saving transformation is 0.053 per ton, which is lower than the farmers’ water tolerance of 0.355 per ton. The results show that the water flow calculated by the terminal water flow calculation system is feasible. However, in the actual implementation process, it is still necessary to continuously adjust and optimize the agricultural water reform measures to promote the development of high-efficiency water-saving agriculture.
Research on the Impact of Plastic Recycling Industry on Greenhouse Gas Emissions
Authors: Gu Borui
Published: May 2021

With the introduction of the circular economy and the goal setting of the Paris Agreement, greenhouse gas emission reduction is facing huge challenges. The recycling of waste plastics is closely related to the reduction of greenhouse gas emissions. The input-output model was used to quantify the relationship between the development of China’s plastic recycling industry and the reduction of greenhouse gas emissions, and relevant recommendations were made.
Analysis on Green Development of Energy, Economy and Environment (3E) System in Henan Province
Authors: Cao Yuliang , Wang Fan
Published: May 2021

This study calculated the green development level of energy, economy and environment (3E) systems in Henan Province from 2005 to 2017 through the model, and studied and analyzed the coordinated development level among various systems by using the coordination degree model.2005-2017, according to the results of green energy, economy and environment system development level is the development trend of general rise, coordinated development between system state can be divided into two stages, one is 2005-2011 is not coordinated development phase, the second is the basic coordinated development stage of the 2012-2017 with the passage of time, the rising degree of coordination between system, gradually improve green development trend of Henan province.
Decoupling mechanism of heavy metal water pollutant discharge in the Yellow River Basin
Authors: Wang Xi , Zhang Huangbo
Published: May 2021

The decoupling of economic growth and heavy metal water pollution discharge in the Yellow River Basin is conducive to the coordinated promotion of large-scale governance. Although there are abundant researches on the decoupling elasticity of resource and environment consumption and its driving effect, there are few microscopic analyses on the driving effect. In view of this, Tapio and LMDI model for the Yellow River basin in 2011-2017 economic growth and heavy metal water pollutants decoupling state and driving effect, explain the decoupling mechanism of heavy metal discharge in the Yellow River basin. The results show that : (1) Although there is a strong decoupling state at the basin level (except 2014-2015), the decoupling situation in the upstream region is still very unstable. (2) The sewage discharge intensity effect is the dominant effect driving the discharge decoupling of heavy metal water pollutants in the basin; The income effect of industrialization is the dominant effect of restraining the decoupling of heavy metal water pollutant discharge.
Green resource planning for large-scale hydropower generation in ecologically fragile plateau areas
Authors: Pu Ning , Ren Jinming , Zhong Weibin , Zheng Nan , Jiang Hongjun , Zhu Ruichen
Published: May 2021

Aiming at the hard-to-recover damage to the environment caused by material mining and waste slag in the construction of the project, this paper summarizes the green source planning of a large hydropower generation in Tibet, the dam-type development of large-scale hydropower generation with no mining material yard and no permanent waste slag yard in ecologically fragile plateau area achieved for the first time through reasonable planning and utilization of excavation waste slag. The planning protects the environment and Saves engineering investment effectively. The planning which has important social significance and economic value can provide reference for other similar engineering designs.
Research on comprehensive management planning of Xin kai river water system in Changchun
Authors: Lin Hai , Guan Yongfa , Song Kaiyu
Published: May 2021

Due to the comprehensive management of Xin kai river water system in Changchun, the surrounding environment is changed, the river ecosystems is restored, the production and living conditions of residents and the living environment on both sides of the strait are improved, finally, the purpose of sustainable development of the environment, economy and society is achieved. Through the further governance of the river, the river ecological function and water circulatory system are gradually restored, the naturalness of the river and the overall ecological environment of the Xin kai river are improved, which can provide a better living space for Changchun City. The comprehensive management planning can provide reference for other similar engineering designs.
Research on Port Ship Pollution Prevention and Control System Based on the Background of Marine Environmental Protection
Authors: Hui Jie
Published: May 2021

In the context of marine environmental protection and ecological protection, the article discusses the operating conditions of ship’s main pollution prevention equipment such as marine sewage discharge, oil-water separators and other equipment and the disadvantages of difficult monitoring of ship exhaust emissions. This paper designs an ocean-going ship based on Beidou Integrated pollution prevention and monitoring system for environmental protection vessels and ports. The system can continuously send information on the operating conditions of marine sewage discharge, oil-water separators and other equipment and ship exhaust emissions to shore-based ship management companies and maritime regulatory agencies through Beidou satellites in real time, providing technical support and information support for remote monitoring. At the same time, it effectively prevents the occurrence of marine pollution by ships and creates a new model of marine environmental protection.
A Novel AC-DC Hybrid Microgrid Control Strategy Based on VSM
Authors: Jiao Deqiang , Li Zerui
Published: May 2021

It is an important goal of the microgrid control system to realize the rational allocation of power between the AC and DC microgrid by using the power electronic converter to integrate the renewable energy into the power distribution system. This paper introduces the Virtual Synchronous Generator (VSM) control strategy of hybrid microgrid, which solves the above problems by mimicking the characteristics of traditional Synchronous Machine (SM). In order to better optimize the performance of AC/DC hybrid microgrid, a novel VSM-based bidirectional converter (BC) control strategy is proposed, which also ensures the capability of BC independent power allocation. Finally, in the PSCAD environment, two types are used. The hybrid microgrid with different BC control structures was studied and compared.
Research on External Fault of Salient Pole Synchronous Motor at Rated Load
Authors: Shen Yubo , Zhou Hongyi , Li Zhibin , Han Siwei , Xu Minhu , Shang Shulei , Zhou Meng , Yao Xuyang
Published: May 2021

The pumped storage power station is an inevitable product of the power system structure and power supply demand development to a certain stage, and it is a necessary management tool to ensure the safe and stable operation of the power system. Pumped storage power plants have the ability to improve and balance the load of the power system, which can improve the quality of power supply to the power grid and improve overall economic benefits. With the development of high-tech industries such as informatization and digitization and the improvement of people’s living standards, society has higher and higher requirements for pumped storage power stations. Pumped storage motor is a three-phase salient-pole synchronous motor used in pumped storage power stations. This paper simulates and analyzes the stator voltage, current and electromagnetic torque when single-phase grounding short circuit, inter-phase short circuit, and two-phase grounding short circuit occur in pumped-storage motors, and the law of change is obtained.
Effect of Monitoring Points on Detection Accuracy of Incomplete Blockage in CO2 Pipeline
Authors: Chen Bing , Zhang Shuxuan , Kang Qinghua
Published: May 2021

Based on the transient pressure wave method, this paper uses OLGA simulation software to detect CO2 incomplete pipe blockage, sets different monitoring points in the pipeline, uses its pressure response data for the calculation of blocking position, blocking length and strength, and determines the best monitoring point by analyzing the relative error of specific blocking parameters. For blockage length, when the monitoring point is close to the blockage position, it has the highest measurement accuracy and a relative error of less than 0.535%. Therefore, the monitoring point should be set up separately at the pipe entrance and near the front of the blocking position, so that the internal blockage of the pipe can be detected more accurately and effectively.
On-line calibration facility of compressed hydrogen dispenser based on weighing method and master meter method
Authors: Li Haiyang , Li Xuejing , Yao Xinhong , Song Jin , Chen Yuyang
Published: May 2021

This paper introduces a kind of on-line calibration facility based on weighing method and master meter method, which can carry out the on-site and laboratory calibration of 35MPa/70MPa hydrogen dispenser. At first, the working principle and technical specifications of the hydrogen dispenser is explained. Then the working principle and design structure of the calibration facility is depicted. Finally, the calibration facility is used to perform the real flow calibration test on hydrogen dispenser. According to the test results, the expanded uncertainty of the calibration facility of master meter method is about 0.7% (k=2), and the expanded uncertainty of the calibration result is 0.96% (k=2); and the expanded uncertainty of calibration facility of weighing method is about 0.097% (k=2), and the expanded uncertainty of calibration result is 0.48% (k=2). The real flow test shows that the two method calibration facilities both can be used for actual calibration of 2.5-level hydrogen dispenser. The calibration facility of weighing method is suitable for the occasions with high accuracy requirements because of its short traceability chain, while the calibration facility of master meter method can be used for flexible on-line calibration because of its simple structure.
Analysis of The Impact of New Energy Development and Utilization on The Environment and Economic Growth
Authors: Zhang Yihua , Liang Jingjing
Published: May 2021

Since the reform and opening up, my country’s economy has grown rapidly, becoming the world’s second largest economy, and its energy consumption has continued to increase. Extensive use of traditional energy sources severely damages the ecological environment, and due to its non-renewable characteristics, the world today is facing a shortage of resources, which is not conducive to sustainable economic development. In this context, countries have begun to vigorously develop and utilize new energy. Therefore, this article first introduces the concept, characteristics and basic classification of new energy in order to have an in-depth understanding of it; then analyzes the impact of the development and utilization of new energy on the environment and economic growth; and finally puts forward relevant suggestions on how to better develop and utilize new energy.
Improving the hole extraction by hexadecylbenzene modification for efficient perovskite solar cells
Authors: Xie Lisha , Deng Xiaoyu , Li Chengbo , Hao Feng
Published: May 2021

In highly efficient halide perovskite solar cells (PSCs), nickel oxide (NiOx) have been widely used as an inorganic hole transport layer (HTL). However, the solution-processed NiOx films always have pinholes, along with inferior contact with perovskite layer. Herein, a surfactant of hexadecylbenzene (HAB) was applied to improve the hole extraction from perovskite to NiOx HTL. With the modification of HAB, a high quality perovskite layer was obtained. Due to the enhanced hole extraction, the HAB modified device showed a higher short-circuit current density (JSc
) and a power conversion efficiency of 17.11%. Therefore, this work offers a novel strategy in interfacial engineering for high-efficiency PSCs.
Analysis of Influencing Factors of Transmission Line Operation Safety and Prevention Countermeasures
Authors: Hu Yuwei
Published: May 2021

At present, the coverage of transmission lines is becoming wider and wider, and its environment is very complex. In bad weather, transmission equipment is prone to failure. However, in the process of transmission line operation, there are many influencing factors that have a great impact on its operation and inconvenience people’s lives. Therefore, power grid enterprises will improve the safety of transmission line operation as the primary problem. This paper briefly introduces the operation of the transmission line, finds out the objective factors that affect it, and puts forward the prevention countermeasures, so as to improve the safety of the operation of the transmission line.
Research on energy problem based on cointegration test
Authors: Yan Zhang
Published: May 2021

In this paper, the VAR model is used to determine the optimal lag order, and the dynamic relationship of each endogenous variable in the time series is predicted and analyzed, so as to effectively predict the interrelated time series variables. On the basis of the stationarity of the test variable series, this paper uses co-integration test and Granger causality test to conduct dynamic empirical analysis on the total energy amount and related variables in Shaanxi Province from 2000 to 2019. The research shows that there is a long-term stable equilibrium relationship between total energy and other variables.
Construction of automatic demand response dynamic model for distributed new energy consumption
Authors: Xu Menghan , Wang Chong , Gong Chuanzheng , Yan Qibo
Published: May 2021

Based on the current situation of demand side management in China, considering the output characteristics of new energy, this paper analyzes various influencing factors of automatic demand response from the aspects of user response mode, power consumption characteristics, response time, load economy, etc. Taking energy storage air-conditioning users as an example, the paper uses real-time electricity price as demand response incentive measure for demand regulation, and verifies the implementation effect of the optimal response strategy of electricity price incentive.
Research on Transportation Technology and Disposal Plan of Oil Storage in Deepwater Sunken Ship
Authors: Zou Yunfei , Zhang Panpan , Ning Weiting
Published: May 2021

Due to the complex hydrological conditions, large water depth, complex operation technology, and large construction difficulties, the disposal of oil storage in the sunken ship is very difficult. Taking the oil storage in the sunken ship as the object, the technologies of rapid extraction, shuttle transportation and transfer of the oil are mainly studied. The disposal plan of the oil storage in the sunken ship is put forward. The plan can meet the requirement that the oil is directly pumped from the cabin to the working ship. The plan also provides decision and technical support for oil spill emergency disposal of the deepwater sunken ship accident.
Study of Fungal Decomposition Rate
Authors: Xu Yezhao , Zhang Han , Feng Guanang , Zhu Libin , Pang Hua
Published: May 2021

Fungi are critical to the carbon cycle. The growth rate model of fungi was constructed from three aspects of temperature, humidity and pH, and the moisture tolerance model of fungi was constructed from two aspects of competitive ranking and water ecotone width. Combined with related references, a fungal decomposition rate model was constructed based on the growth rate and moisture tolerance models. Under the given environmental conditions, the decomposer mass change curve was obtained by solving with MATLAB software, and the effect of environmental changes on the curve trend was investigated by the control variable method. The curve of decomposer mass change was obtained by calculating the competitive rank of the population and combining it with the fungal decomposition rate model.
Preparation and process optimization of tea polysaccharide-nano-selenium
Authors: Xia Bailin , Xu Su , Liu Yuguo , Li Junbin , Li Huanxing , Zhang Yalin
Published: May 2021

Response Surface Methodology (RSM) was used to study the effects of reaction temperature, the mass fraction of tea polysaccharide and the VC/Na2SeO3 ratio (M/M) on the particle size of composite. The complex was characterized by UV, Zeta potential, XRD and FT-IR. When the mass fraction of tea polysaccharide is 4‰ and the VC/Na2SeO3 ratio (M/M) is about 5:1 at 50°C, the particle size of the complex can be less than 70 nm.
Rupture directivity and fault plane determination from analysis of rupture duration using broadband P-waves of the September 2018 M
w 7.5 Palu, Indonesia earthquake
Authors: Madlazim  , Prastowo T , Fahmi M N
Published: May 2021

The aim of this study is to determine earthquake rupture directivity and fault plane of the 28 September 2018 M
w 7.5 event in Palu, Indonesia. The data used in the current study were all acquired from broadband seismograms recorded by a network of 56 seismic stations. The method included analysis of rupture duration, where T
dur was calculated using the vertical component of P-waveforms downloaded from IRIS site at http://ds.iris.edu/wilber3/find_event. For all stations involved in the T
dur calculations, the largest distance between the epicenter and the corresponding station was estimated to be 40° from the azimuth station. The direction of the rupture indicated fault plane geometry of the source. The rupture directivity was found to be at azimuth 179°, in good agreement with the Palu Koro Fault azimuth. The finding implies that the direction of the earthquake rupture passed below the sea surface of Palu Bay, which could be the main source of the tsunami.
Determination of Potassium Concentration in Solution Using Optical Fiber Sensors
Authors: Budiyanto M , Yasin M , Suhariningsih  , Mahdiannur Muhamad Arif
Published: May 2021

Potassium is a mineral that has an important role in maintaining fluid balance in the human body and controlling blood pressure in the body. In addition, potassium also plays a role in maintaining the function of the muscles and nerves that control the heart. The development of instruments and methods developed to obtain more accurate measurements of potassium concentration requires an institution with high sensitivity. One of the instruments utilizes the principle of electromagetic wave symptoms made by optical sensor systems with the use of optical fibers for waveguides to maintain their intensity stability. The optical fiber bundle instrument in the optical sensor system to determine potassium concentration in the hope that this instrument can present accurate measurement parameters and better sensor sensitivity. In this study, samples of standard solutions with potassium as a solute and pure water function as solvents. Potassium solution samples that are in the bottom of the vessel there is a flat mirror that reflects the laser beam that has been through the process of absorption by the sample solution. The reflected neon helium laser is transmitted through the optical fiber receiver to measure the change in wave intensity using an optical detector. The intensity of the reflected laser beam waves is read by an optical detector and converted to an electrical energy display by measuring the maximum electrical voltage using a digital voltmeter. The parameters measured in the experiment investigate the relationship between the change in the concentration of the potassium solution and the maximum voltage read on a digital voltmeter. The results of data analysis determine the concentration of potassium to achieve high sensitivity, linearity and accuracy with a sensitivity value of 0.01 mV/ppm, linearity of more than 99%, linear range of 0-10 ppm, so the instrument is very valid and high sensitivity.