bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis of hot topics in soil remediation research based on VOSviewer
Authors: Hu Ya , Sun Zenghui , Wu Dan
Published: August 2019

Through the cluster analysis of the keywords and draw scientific knowledge map by VOSviewer in the field of soil remediation in order to further explore the hot topics of soil remediation research. The results were analyzed by manual analysis. The key words in the field of soil remediation research were divided into 4 topic groups. They are in the field of heavy metal pollution, chemical remediation technology, bioremediation technology, and electric remediation technology. The hot topic in the field of soil remediation research is mainly “heavy-metals”, “removal”, “bioremediation”, “degradation”, “biodegradation”, “phytoremediation”, “contaminated soil”, “water”, “cadmium”, “polycyclic aromatic-hydrocarbons”, “adsorption”, “lead”, and “sorption”, “bioavailability”, “extraction.
Analysis and Evaluation of Heavy Metal Content in Remixing Soil by Feldspathic Sandstone and Sand in Mu Us Sandy Land, China
Authors: Zhe Pang , Juan Li , Qilong Wang
Published: August 2019

In order to ensure the quality of cultivated land with the technology of remixing soil by feldspathic sandstone and sand, the concentrations of eight heavy metals were measured, and the degree of heavy metal pollution in the soil was assessed by Nemerow index and potential ecological risk index. The results showed that, compared with feldspathic, the concentrations of Cr, Ni, Cu, Zn, As, Cd and Pb in the remixing soil decreased by 12.8%, 40.7%, 44.1%, 49.3%, 49.8%, 37.6% and 14.1% respectively. The concentrations of eight heavy metals in sandstone and remixing soil were not significantly different in space, but in sand vary greatly. There was very significant positive correlation among the contents of Ni, Cu, Zn, As, Cd and Pb in the remixing soil, which indicates that the heavy metals have obvious homology. The single pollution index of heavy metals in remixing soil, feldspathic sandstone and sand were all less than one, and the comprehensive pollution index were 0.611, 0.980 and 0.395 respectively. The potential ecological risk index (RI) of heavy metals in remixing soil, feldspathic sandstone and sand were all less than 150, indicating that the soils with three textures showed low ecological risks. After three years of planting, the potential ecological risk index of heavy metals in the remixing soil increased slightly, but the single pollution index was also less than one. The research shows that the remixing soil in Mu Us Sandy Land can ensure the quality of soil environment and the safety of agricultural products.
Design of Intelligent Air Purifier and Indoor Environment Improvement System
Authors: Chen Fengfeng , Hong Xueqiong
Published: August 2019

Smart homes have developed rapidly in the wave of informationization, and Internet of Things water purifiers and air purifiers have gradually entered the families of ordinary people. In order to improve indoor environment, realize the remote control and state monitoring of the water purifier, the intelligent water purifier system is constructed by using the related technologies of the Internet of Things, and the communication and interaction between the hardware device and the APP are completed through the combination of software and hardware programming. An air purification system that integrates infrared remote control and Android mobile phone control, uses STM32 single-chip microcomputer as the control core, and uses various sensors to intelligently detect the indoor environment by using information fusion algorithm. The air purifier adopts an ion decomposition purification method, and the design of the finless device can reduce the loss of the consumables, reduce the growth of bacteria, and have low noise during operation. Experiments show that the purifier can effectively purify indoor air and improve purification efficiency.
Analysis and treatment of Free end vibration of condensate pump motor towards ultra-supercritical 660MW turbine
Authors: Li Wanjun , Li Xiaoxia , Niu Qingliang , Huang Tianqi , Zhang Deke , Dong Yang
Published: August 2019

The motor free end vibrates at rated speed after overhaul of condensate pump; Through collecting field data and checking maintenance records, the fault diagnosis and troubleshooting of A condensate pump motor with excessive vibration was carried out based on the mechanism of vibration, and the cause of the fault was accurately analysed. By taking effective measures such as replacing the expansion joint at the inlet pipe, adjusting the concentricity of the pipes before and after the expansion joint, and adding A safety valve on the inlet pipe, the problem of excessive vibration of the condensate pump motor A has been thoroughly solved, and the hidden danger of equipment has been eliminated successfully.
Analysis on corrugated pipe break in the expansion joint of a turbo-generator set
Authors: Li Wanjun , Yuan Chen , Li Chong
Published: August 2019

In a power plant, the bellows of the lower part of the expansion joint for pumping and heating of the NO.8 turbo-generator unit breaked, and the internal guide plate was teared along the welding seam. Through observation of macroscopic morphology, hardness analysis, metallographic examination, energy spectrum analysis and other means, the corrugated pipe material itself unqualified performance, stress corrosion cracking, corrosion and other reasons were eliminated. According to the micro-characteristics of fatigue fracture and the service environment of the bellows, it is concluded that the main reason of break is the fatigue cracking of the bellows under the impact of the air flow and vibration.
Application of the theory of double actual power generation in run-of-river hydropower stations’ management
Authors: Yang Hongxing , Yang Jinyi
Published: August 2019

The number of hydropower stations is large in China. The parallel industrial benchmark of run-of-river hydropower stations is not significant, for there are quite different characteristics from each run-of-river hydropower station, so it is necessary to study vertical benchmark of the hydropower station itself. Based on this, the theory of double actual power generation is put forward, and the model of vertical benchmark of run-of-river hydropower station is built after analysing the dynamic and convergent characteristics of the theory. After the model is used actually in Duosongduo hydropower station, the rationality of the theory is verified, and the benchmark management effect is remarkable. The theory of double actual power generation has a wide range of practicability and can be generalized. The theory can be applied in the management of various enterprises, groups and families, and can be extended to the management of many quantitative indicators. It has innovation in management and valuable for further study in economics.
The Designed MEMS Methane Sensor Based on Pulse Power Supply
Authors: Shen Guojie , Zheng Xuena , Zhang Yulin , Wang Ruixue
Published: August 2019

As the power too high, the traditional catalytic methane sensor has high wiring cost and quantitative restriction in single circuit. In this paper, a new intelligent methane sensor aimed at low power consumption is designed by using low power MEMS catalytic methane cell, pulse supply mechanism and low power waste circuit. It is observed from the test that the new sensor has low power consumption and well performance.
Analysis on the Retrofit Scheme of a 660MW Unit Heater
Authors: Xue Fangming , Sun Yiqing , Liu Xiuru
Published: August 2019

This paper analyzes the cost and benefit of gas-water heat transfer and gasgas heat exchange scheme by analyzing the retrofit scheme of a 660MW unit heater, and proposes a reasonable feasibility study plan. It can be used as a reference for the unheated wind turbine reconstruction in the southern region.
Research on Optimal Access Location and Capacity of MultiStage Multi-Scenario Distributed Power Supply Based on OpenDSS
Authors: Han Jun , Huang Junhui , Wu Yuefeng , Liu Hong , Xie Zhenjian , Huang He , Gui Sanrong
Published: August 2019

At present, the research on the planning problem of distributed power access distribution network is mostly carried out under the condition that the target annual load is known, and the impact of the differential load growth in different stages and the multi-scenario timing characteristics of the distribution network components are not considered. Aiming at this problem, an optimal access location and capacity calculation method for multi-period and multi-scenario distributed power supply based on OpenDSS is proposed. Firstly, the simulation principle and advantages of OpenDSS are explained from the aspects of model construction and power flow calculation. Secondly, the optimal power supply access model with multiple time slots and multiple scenarios is established with the goal of minimum planning end value. Thirdly, a model solving method based on particle swarm optimization is proposed. Finally, a typical example is chosen to calculate the optimal planning scheme of distributed power supply under multi-period, and the rationality of the model is verified.
Recent Progress of Graphene as Cathode materials in Lithium Ion Batteries
Authors: Meng Xiangyu
Published: August 2019

Graphene, composed by one-atom-thick planar sheet with sp2 bonded carbon atoms, which is regarded as the basis for all fullerene allotropic forms. Its combination with electrode materials (LiFePO4, LiMn2O4, etc.) could dramatically increase the electrochemical performance of the rechargeable battery system. With relative poor rate capability, charge capacity, and cyclability of lithium ion batteries, this review analyses the prospects of graphene materials serve as lithium ion battery electrodes to meet such demands. Some important advances have been summarized, ranging from the synthesis of graphene-based lithium ion battery electrodes to their properties and underlying principles for electrochemical improvement of such materials.
Research on Constructing Integrated Energy System
Authors: Jia Jingzi , Zeng Ming
Published: August 2019

The current situation of energy supply and demand is severe. To solve a series of problems, the target energy system, with the typical characteristics of supply effectivity and synergistic transformation between supply and demand, needs to be constructed. The target energy system, that is, integrated energy system makes full use of supply and demand resources on both sides, and organically combines integrated services and integrated energy to form a coordinated supply subsystem, so as to meet the new energy demand and realize the effective supply of energy. Finally, the paper puts forward three concrete measures to improve integrated energy system construction.
The Influence Mechanism of Power Grid Operation Comprehensive Value from Perspective of Sustainable Energy Development
Authors: Huo Huijuan , Wang Hongjin , Lu Yanchao
Published: August 2019

Safe operation and sustainable construction of a power system can promote economic development and technological progress. A good grid operation system can improve the operation efficiency and input-output efficiency of the whole power system. An index system was built to list criteria of impacting on power grid operation comprehensive value from perspective of investment based on the value creation. A factor analysis method was applied to recognized key criteria. An entropy method was introduced to sort the importance of the key criteria. Based on Chinese data from 2004 to 2017, an empirical study was preformed to verify the framework and explained the impact of key criteria on the power grid operation value. A series of investment strategies and technical means were proposed to improve the power system operation according to the empirical research results.
China’s photovoltaic power generation technology and application
Authors: Li Rui
Published: August 2019

In recent years, with the continuous development of the concept of environmental protection economy and sustainable development, the development of new energy has been widely recognized, and the development of new energy has become a very important measure for the current filling of the energy industry. Solar photovoltaic power generation plays a very important role in the development of new energy. This article mainly describes the advantages of solar photovoltaic power generation technology, explains solar photovoltaic power generation system, explains the principle of solar photovoltaic power generation technology, discusses the advantages of solar photovoltaic power generation and insufficient, and show the current development and application status of solar photovoltaic power generation.
Comprehensive exploration of the development status and future prospects of abandoned wind heating
Authors: An Qiwei
Published: August 2019

As a renewable energy source, wind energy has been rapidly developed in the current exhaustion and lack of energy. However, while wind power construction is developing rapidly, the wind curtailment phenomenon caused by the difficult problem of transportation and consumption is also becoming more and more popular. Seriously, it caused a lot of waste of energy. This paper introduces the background of the cause of abandoning wind and the development status of abandoned wind power generation at home and abroad. Combined with a large number of related researches, it analyzes the prospects of abandon wind power generation operation and evaluates the development prospect of wind power heating. Finally, the development of abandoned wind heating has been prospected.
Main types and applications of hybrid power generation system
Authors: Qing Hao
Published: August 2019

With the development of new power generation technologies, including renewable energy and efficient and clean fuels, combined power generation has become an effective way to reduce environmental pollution and improve energy efficiency. Because different energy forms are naturally strong in time and geography. Complementary, different types of renewable energy combined power generation, can Make up for each other’s intermittent losses of energy and improve the grid. The extent of intermittent renewable energy consumption. Research in many developed countries has matured, but China is still in its infancy. Based on this, this paper introduces the development and research of the combined power supply system at home and abroad, and expounds the main types and applications of the combined power generation system.
Direct wind heating greenhouse underground heating system
Authors: Ma Ji
Published: August 2019

China’s three northern regions are rich in wind energy resources, with annual wind speeds of more than 3m/s reaching 5,000 hours. Traditional greenhouses use coal-fired heating, which has high pollution and low efficiency. Therefore, the system ingeniously combines wind and heating, and proposes a system that directly combines water agitation heating and greenhouse heating to realize the direct conversion of wind energy to thermal energy. The working principle of the system is: when the wind speed reaches the starting wind speed of the wind turbine, the wind turbine blade rotates to drive the stirring device, and the water in the stirring device is heated by the heat, and when the local table temperature is low, the water can be released, and the water is buried. The serpentine pipes in the greenhouse soil heat the soil, and the temperature in the greenhouse will also increase. At the same time, the temperature in the greenhouse is monitored by the temperature control system. If the temperature rises faster, the fluid flow is adjusted to reduce the heat release. Achieve intelligent regulation of greenhouse temperature to maintain its temperature in a suitable range. The system uses a wind-mixing device to use the abundant wind resources in the Sanbei area for greenhouse heating, thereby keeping the greenhouse temperature stable. From the perspective of green and energy saving, it has created an effective way to warm the greenhouse in winter. In the true sense, the consumption of fossil energy has been reduced, and the criteria for appropriate localization and recycling and renewable development have been realized.
The Empirical Research of Multi-energy Micro grid Operation Efficiency Based on DEA Method
Authors: Meng Li , Yi Lin , Zhangsui Lin , Wei Wu
Published: August 2019

At present, China is striving to build a modern energy system, and the integrated energy system is regarded as the key technology to be promoted. As an important technology for the implementation of the integrated energy system, the operation of multi-energy micro grid should also be studied. Based on the above ideas, this paper studies the efficiency evaluation method of multi-energy micro grid. Firstly, a dynamic and static multi-energy micro grid operation efficiency evaluation index system is constructed. According to the characteristics of the index system, DEA method is used for evaluation. Finally, an example is designed to carry out empirical research.
Research on Smart Grid Planning and Construction Based on GIS Resource Allocation Technology
Authors: Huang Jianmin , He Jian , Yan Kun , Li Weiping , Yang Jie , Xia Tao , Ye Yu , Tu Lei
Published: August 2019

Smart grid planning and construction is a very complex engineering project that requires intelligent technology to protect systems such as grid lines and substations to control grid stability and power quality. The smart grid GIS resource allocation technology has designed a new system architecture for the needs of building smart grids. The article expounds the key technologies and typical applications of smart grid GIS resource allocation technology, and describes its broad application prospects in smart grid. As a public service platform for graphical display applications, GIS platform constructs a spatial geographic information data center, which is intelligent. Applications such as grid integration, data mining, and intensive resource utilization provide a massive data storage, management, and analysis environment. The grid GIS platform provides geospatial information sharing and business application integration for smart grid power generation, transmission, substation, power distribution, power consumption, dispatching, etc., providing planning methods and visual analysis services for the construction of smart grid systems.
A New Power System State Estimation Method Based on External Student zed Residuals
Authors: Huang Sijia , Tan Weipu
Published: August 2019

Power system state estimation is the core of power system online monitoring, analysis and control function, playing an important role in the intelligent analysis and decision-making of power grid dispatching. The estimation results directly affect the correctness and effectiveness of the operation analysis and decision system, how to improve the accuracy of state estimation is an important content of the research. Detection and identification of bad data is one of the important function of state estimation in power system, its purpose is to eliminate a few bad data by the measurement data and improve the reliability of state estimation, which is of great significance to the safe operation of power system. External studentized residuals are used as criterion to detect and identify bad data in power system state estimation, improving the shortcomings of standardized residuals in traditional bad data detection and identification. Then the exponential function weighted least squares method based on external studentized residuals is proposed. The form of the original algorithm is modified using the principle of equivalent weight. Simulation is carried out according to the different situation of bad data to verify its performance. The performance is compared with the traditional robust estimation method and basic weighted least squares method.
Afault Diagnosis Model of Marine Diesel Engine Lubrication System Based on Improvedextreme Learning Machine
Authors: Zhao Gang , Liu Zhikun , Chen Long
Published: August 2019

The lubrication system provides lubrication oil to various moving parts in the marine diesel engine. Once faults occurred in lubrication system, it can result in dramatically damage to the diesel engine. Development of fast and accurate fault diagnosis method of lubrication system is therefore highly urged. In this paper, we present a novel intelligent fault diagnosis methodbased on improved extreme learning machine (ELM). Firstly, we use chaotic mapping to enhance capability of the particle swarm optimization (PSO) algorithm; Then, an enhanced PSO algorithm is used to determine initial input weights (connecting input layer nodes and hidden layer nodes) and thresholds of ELM. Finally, we carry out fault diagnosis experiment on the marine diesel engine lubrication system. The experiments demonstrated that the proposed model could achieve more ideal performance.
Influence of Boiler Thermal Storage Coefficient on Stable Operation of Shipboard Power Station
Authors: Zhu Yongxin , Zhang Xiaofeng , Huang Jing
Published: August 2019

Stable operation of shipboard turbine generator is a key factor affecting the safety of power grid, and heat storage system influences the stability of turbine main pressure significantly. On the basis of boiler-turbine integral model, prohibition effect of thermal storage system on cyclical disturbance is studied. In order to compare the influences of varied heat storage coefficient on turbine unit stable operation after sudden load, PSCAD simulation software is applied. Result of experimental test based on megawatt turbo-generator has confirmed the conclusion, and this paper may provide reference for further research on shipboard power station design and control.
Based on Rough Set and RBF Neural Network Power Grid Fault Diagnosis
Authors: Liu Xiaoqin , Sun Haijun , Wu Mengchan , Yang Jiayao
Published: August 2019

In order to improve the accuracy of troubleshooting results and save diagnostic time, rough set and RBF neural network are used to diagnosed fault of power grid.Rough sample reduction program is used to reduce the fault samples, and the reduction decision table is obtained as the input of the RBF neural network, get the training results.The fault samples without rough set reduction are input into RBF for training, and the two training results are compared. It is found that the samples using the rough set reduction have the same diagnostic ability as the initial decision table.Obviously, the rough decision set initial decision table can greatly reduce the size of the training sample and save diagnosis time.
Effects of Different Metal Ions on the Stability of Anthocyanins as Indicators
Authors: Li Yiyao
Published: August 2019

In this paper, the stability of anthocyanins in morning glory in the presence of different ions was analyzed by spectrophotometry. The anthocyanin extract was obtained by heating and reflux. Then the maximum absorption wavelength of anthocyanin was obtained by specific characteristic absorbance of anthocyanin, and the concentration of anthocyanin was calculated. Six different metal ions were added to the anthocyanin solution to determine the influence of the stability of anthocyanin by measuring the absorbance value. Through the analysis, we obtained calcium ions which can promote the stability of anthocyanins. Finally, we find the best concentration ratio of calcium ion and anthocyanin. Through the study, we found that when the concentration of anthocyanin and calcium ion is 1:7, the best color retention effect is achieved.
The study on fuel-cell performance by using alkylimidazole ionic liquid as electrolytes for fuel cell
Authors: Xu Jiajia , Feng Zhi , Zhang Jing , Wang Yuanyang
Published: August 2019

Ionic liquids are widely used in the field of electrochemistry because of its low melting point, wide electrochemical window and outstanding electrical conductivity. Ionic liquids are used as fuel-cell electrolytes in order to optimize the overall performance of fuel cells. Four ionic liquids have been investigated, such as 1-methylimidazolium hydrogensulfate [Hmim]HSO4, 1-n-butyl-3-methylimidazolium bromide [Bmim]Br, 1-n-butyl-3-methylimidazolium trifluoroacetate [Bmim]CF3COO, 1-n-butyl-3-methylimidazolium hydrogensulfate [Bmim] HSO4. At the same time, fuel cell shells made of PTFE and stainless steel were designed and processed. The anode and cathode electrode materials were prepared; then the above ionic liquids were used as the fuel-cell electrolyte in turn, The performance of the fuel cell was measured by voltammetry using hydrogen as a fuel and air as an oxygen source.
Comparison of two microbial oil extraction technologies
Authors: Zheng Chaocheng
Published: August 2019

Microbial oil production has many advantages such as rapid proliferation of microbial cells and short production cycle. The raw materials needed for growth are abundant and inexpensive such as starch, sugar, especially the waste which can be utilized in food or paper industry. 170 oil-producing strains were screened by Sudan black staining observation using fat grains as screening index, among which, 6 high lipid yield yeast strains were identified by residual sugar as indirect index. By comparing the oil-producing ability of this strain, it was determined that the first strain was a good strain for oil production by fermentation. The biomass, oil content and oil yield of the strain were 11.58 g/L, 36.68%, 4.25 g/L, respectively. Through analysis on 26S rDNA sequence and observation on morphological characteristics, culture characteristics and physiological and biochemical characteristics, this strain belonged to Cryptococcus spp.
Analysis of main nutrients among different edible parts of ‘Nainaiqingcai’ mustard under the alpine cold climate
Authors: Ma Jie , Qu Wen , Wu Rui , Chen Chunyan , Ma Wei , He Yuankuan , Sun Bo , Zhou Ping
Published: August 2019

Bijie City, Guizhou Province belongs to the alpine cold climate. In order to understand the nutritional values of ‘Nainaiqingcai’ mustard, the contents of main nutrients among different edible parts (leaves, petioles, and bolting stem) in ‘Nainaiqingcai’ mustard under the alpine cold climate were investigated. The results showed that significant differences were found among different edible parts. The levels of chlorophyll, carotenoids, ascorbic acid, soluble soilds, and soluble proteins were followed as the trends of leaves > petioles > bolting stem.Whereas the sugar components showed different distributions, and the lowest content of sugar was detected in leaves. Moreover, significant negatively correlation were found between sugar and the other nutrients. Most of the extremely significant positive correlations were found between sugar components, and the correlation coefficient is high (except for the correlation between fructose and sucrose). The highest correlation coefficient was between chlorophyll and carotenoids, up to 1.000. In summary, the information in this study provides a theoretical reference for the study of nutritional quality of ‘Nainaiqingcai’ mustard under the alpine cold climate.
Research on Preparation of Diatomite and Graphene Oxide Materials
Authors: Song Weihua , Xu Haoran , Sun Ruokai
Published: August 2019

The sol-gel method and negative pressure and load method, diatomite as carrier, are used to prepare diatomite, nano-zinc oxide and graphene oxide composite materials, the sample was characterized and analyzed, the structure and morphology of diatomite was and graphene oxide materials were studied, and the influence graphene oxide on photocatalytic performance was analyzed. The results show that the loading of diatomite on nano-zinc oxide is better than the ordinary load method.
Biohydrogen as a renewable energy and its potential production from the conversion of palm oil mill effluent by anaerobic processes
Authors: Gumilar A , Syafila M , Handajani M , Angga M I
Published: August 2019

Biohydrogen is one of the promising alternatives to be used as a source of energy in the future. Several studies related to the production of biohydrogen through the process of conversion of organic wastewater by anaerobic process have been done with different reactor conditions. However, biohydrogen is not the main products produced in the process, even biohydrogen is produced in relatively few amounts compared to other acidogenesis products such as volatile acids. The aims of the study are to determine the optimum conditions of biohydrogen production through the control of pH are 5.5; 6.5; 7.5 and 8.5. This factor affects to the metabolism pathway. The study was conducted using the wastewater from the palm oil mill effluent as a substrate, pure culture and mixed culture bacteria as a biomass and performed in the laboratory using an anaerobic batch reactor which will be operated for 72 hours. Sampling was done every 6 hours and then analysed the product of acidogenesis produced. The results show that the optimum conditions for biohydrogen production occurs in the reactor with the pH 5.5-6.5 are 15.27% ± 0.404% to 15.40% ± 0.265%.
Studies breeding places of Aedes aegypti and Aedes albopictus in dengue endemic Padang area
Authors: Onasis Aidil , Barlian Eri , Razak Abdul
Published: August 2019

Suspect vector of Dengue Haemorrhagic Fever (DHF) and Chickungunya transmitted by Aedes aegypti and Aedes albopictus in container as potential breeding places. This study used a descriptive design, data collection in Kuranji, Nanggalo and Padang Timur and Lubuk Begalung district for 5 months in Padang with populations in house as many as 400 larvae index for density analysis to interpretation. The results container at risk of becoming breeding places of Aedes aegypti in Padang Timur districts 14.25%, and Aedes albopictus in Kuranji 20.75%. 3 classification area analysis are Aedes aegypti and Aedes albopictus in the container in the form of supervision that more routine in Nanggalo compared Kuranji and Lubuk Begalung well as in Padang Timur as well as control by getting rid of that is rare in Kuranji and Padang Timur while in Nanggalo and Lubuk Begalung category often get rid of the landfill. Updating data analysis results in the form of survey results, mosquito density monitoring strategy regularly and periodically by the community with assistance by health workers as well as the risk of transmission as well as the anticipation of Extraordinary Events and prevention of dengue outbreaks.
Decreasing level of heavy metals Fe and Mn use the wetland method at coal open mining PT Bukit Asam South Sumatra Province
Authors: Prabowo Heri , Amran Ali , Arbain Ardinis
Published: August 2019

PT. Bukit Asam, Tbk is a coal mining company that directly produces waste water. For this reason, it is necessary to treat wastewater to neutralize substances that pollute the wastewater, one of the methods used is constructed wetland. The method used is descriptive quantitative method. Where this study will produce the influence of the constructed wetland method in neutralizing waste water from the coal mining process at PT. Bukit Asam, Tbk. Based on the results of the study it can be seen that the waste treatment caused by the Constructed Wetland coal mining process can increase the Ph value from 3 samples averaging 2.6 mg / l, reducing the Fe metal content from 3 samples averaging 9.98 mg / l, and lowering the metal content of Mn from 3 samples averaging 0.75 mg / l and decreasing the level of Total Suspended Solid from 3 samples averaging 486 mg / l. The constructed wetland method that has been implemented at PT. BA has succeeded in neutralizing Fe and Mn metals and TSS according to the standard quality values that meet the standards set by the government.
Pukung pahewan: The effort of natural resources conservation in Dayak Ngaju community
Authors: Bulkani  , Ilham  , Darlan Saiffullah
Published: August 2019

In this article, I will discuss about Pukung Pahewan. It is a name of the prohibition area with certain terms and extents. Pukung Pahewan comes from the Ngaju Dayak language. Pukung means island or region, while pahewan means prohibition. The determination of Pukung Pahewan refers to certain objects such as trees, stones, and other objects that are sacred to a particular region, which should not be disturbed or destroyed, including the surrounding area. Moreover, Pukung Pahewan is determined by customary agreement with certain characteristics, i.e. the Diwung/Handiwung tree, Lunuk/Banyan tree or other large trees, the presence of sacred, and sometimes required by the Bird’s Nest/Antang. The concept of Pukung Pahewan by the Dayak Ngaju community in many areas of Central Kalimantan proves to eliminate the notion that a shifting cultivation system can damage natural resources.
Effectiveness of the Indonesian literacy school program in improving the quality of basic education for marginal communities in the Indonesian border area
Authors: Defit Sarjon , Zefriyenni  , Novia Dewi Yosa , Yarman
Published: August 2019

This study aims to compile basic data, develop and implement the Indonesian School of Literacy program in Improving the Quality of Basic Education for Marginal Communities. The program aims to establish and improve school performance through a mentoring process for school principals and teachers. In addition, this program also involves parents in the learning process of students while at home. Parents are involved through parenting training held at school. The Indonesian Literacy School is a program that seeks to realize a community-based school model that concentrates on improving the quality of instructional systems and the development of school culture, with a distinctive literacy culture. This program focuses on improving school governance by referring to indicators of improving school performance based on the Uswah Method Tools. The stages in the development of this program are: program planning, program implementation, and the end of the program. This research was conducted in 2018 to make program design and development of program tools. After that, an initial assessment of the area and school was carried out for program intervention. Program interventions are carried out in the Indonesian verandah, namely: Kepulaun Meranti (Riau Province) and Nunukan (North Kalimantan). The results showed that there was an improvement in school governance through improving the quality of instructional systems and the development of school culture, with a distinctive literacy culture.
Local wisdom of Aek Latong society for mitigation and adaptation of soil movement disaster in North Sumatra, Indonesia
Authors: Haris Zainal A , Irianto Agus , Heldi  , Hermon Dedi , Yulnafatmawita
Published: August 2019

Lately, due to advance technology, some of natural disasters could be forecasted, therefore the people can decide where to go to avoid the disasters. However, people in Aek Latong North Sumatra did different thing. They just stayed in their villages or regions without moving to anticipate the impact that might happen. This research was aimed to identify the local wisdom of Aek Latong society in facing, mitigating, and adapting the disaster, especially soil movement disaster in their region. This research was conducted through 3 steps (preparation, main survey, and data analyses). At the first step (preparation) was conducted to get secondary data about Aek Latong, such as geographical position, natural condition, type of natural disaster, society and the tradition. The second step (main survey) was conducted by directly interviewing the people in Aek Latong how they face, mitigate, and adapt the disaster happening. The third step was data analyses. Based on data resulted, Aek Latong society has a strong belief inherited from their ancients that everything come from the almighty God, therefore they have to face it. They believe that God has specific purposes to do so for them, they do not have to easily give up. Then, they also mitigate and adapt the disaster by earlier checking the signs of disaster and following the advice given, besides they did not construct building and do farming activities in sloping area and in the river bank. It could be concluded that Aek Latong society was able to face, mitigate, and adapt to the natural disaster in their region by their belief, knowledge, as well as by following the advice given.
The effect of vocational learning strategy and knowledge of sustainable development in increasing traditional cattlemen’s skill in making bio-digester
Authors: Nadiroh  , Fadli Hazhar Fachrial Nur , Utomo Erry
Published: August 2019

The objective of this research is to find out the effect of vocational learning strategy and knowledge about sustainable development to increase traditional cattlemen skills in making Bio-digester. The research design used experiment of 2 x 2 factorial design. The sample were 80 traditional cattlemen at District Sukawangi who were divided in two groups. The result showed as follows 1) There is significant difference on the cattlemen group who was taught with vocational learning strategy between school based and work place based; 2) There were interactions found between two factors there are vocational learning strategy and knowledge about sustainable development; 3) The cattlemen group who have high knowledge about sustainable development and taught with work place-based strategy, the skill in making Biodigester was higher than the group who taught with school-based strategy; 4) The cattlemen group who had low knowledge about sustainable development and taught with work place-based strategy, the skill in making Bio-digester was higher than the group who taught using school-based strategy. Vocational learning strategy using work place based can be more effective to increase the level skill of cattlemen in making Bio-digester by considering their knowledge about sustainable development.
Sand type characteristics analysis and mapping in Bengkulu
Authors: Supriani Fepy , Islam Mukhlis , Afrizal Yuzuar
Published: August 2019

Sand can be classified based on the origin of the quarry, namely sea sand, river sand and mountain sand. Sand provides an important role as filler material in building cementation materials such as in mortar and concrete. The characteristics of the sand determine the strength of the building. Characteristics can be in the form of grain size (gradation), sludge/clay content and specific gravity. This study aims to look at the characteristics of sand from different types of sand while looking at the mapping of sand zones based on SKSNI 03 2834 2000. Sand is taken directly from quarry, in five city districts in Bengkulu Province which consist of sea sand, river sand and mountain sand. Determination of sand gradation is based on SNI 03-1975-1990 sieve analysis test. Examination of sludge/clay content and specific gravity based on SNI 6821-2002 and SNI 03-4804-1998 standards. The conclusion obtained is that sand will have different characteristics based on quarries. 81.25% sea sand tends to have uniform granules, with smooth and very fine characteristics and does not enter any zone. River sand has a good gradation and categorized in zones characteristic of smooth, slightly rough and rough. Mountain sand is categorized as fine sand with good gradation. The sludge content of sand from each type of origin of the sand quarry shows that the river sand with a calm flow has a high level of clay content. Clay content levels that are very high on mountain sand are probably ash that was produced by volcanic activity of the mountain. The specific gravity of each type of sand varies, not depending from the origin of the sand.
Knowledge of mother about the household environment againt acute respiratory infection in Padang Pasir: A literature study
Authors: Handayuni Linda , Ridha Alfian Azyyati , Amran Ali , Razak Abdul
Published: August 2019

Acute Respiratory Infections (ARI) is one cause of death in infants and toddlers. The incidence of ARI at West Sumatera in 2016 was 154, 962 cases and increased by 2017 as many as 169, 031 cases. The highest incidence of ARI was found in Padang Pasir for age <1 year 568 people and age 1-4 years 1648 people. The high number of ARI cases in children under five is due to lack of knowledge of the mother about the household environment to prevent ARI of toddlers. Sample was 86 mothers. The study was conducted by literature study technique. The result showed that 30, 2% mother knowledge about ARI still low. Activities to improve knowledge of mother toddlers need to be intensified again by way of counseling about the prevention of ARI through Posyandu cadres and health personnel so as to reduce the incidence of ARI.
Environmentally friendly photo road modeling in Tasikmalaya city to improve urban transportation framework
Authors: Mahdi Indra , Herlina Nina , Nurhidayah Agi , Purwanto Anto , Nur Rachman Andi
Published: August 2019

The development of a region can be seen from population growth and a high average growth rate, which has implications for socio-economic activities, infrastructure and other physical buildings that are increasingly complex. To accommodate all these activities, space is needed as a place of activity. The road infrastructure sector is one of the arteries in the region’s economic growth, so the accuracy of its provision through the amount of investment is very important. This will not cause a bottleneck in the flow of goods / services and people at regional, national and even international levels which causes lower economic and social costs. Even so, in Tasikmalaya City, the road problems at this time have shown serious problems, especially on the main roads, traffic jams often occur, not only due to the increasing number of vehicles, but due to the non-functioning of the sidewalk as a place to walk because some sidewalks are used to sell street vendors, while walking is a tool for internal movement of the city, the only tool to meet the needs of face-to-face interactions that exist in commercial and cultural activities in urban life. This study will examine whether the sidewalk functions in accordance with existing regulations, and whether the sidewalk design has fulfilled the requirements of safety, fun, comfort, and has an appeal. This study uses a qualitative descriptive research method. Data obtained through direct observation in the field. Observations were made on the location of the main road that many pedestrians traversed such as the Jl. Martadinata, Jl. Doctor Sukardjo, and Jl. H. Mustopa arrived at Padayungan intersection. The analytical method uses descriptive qualitative with the planning model. Stages of analysis are drainage channel analysis, analysis of the physical condition of the sidewalk, analysis of the quality of safety and comfort of the sidewalk as a pedestrian path. The results of the research are in the form of directional and environmentally friendly sidewalk designs in urban areas, which can be used to complement the shortcomings in variables and to correct variables that have not been fulfilled according to the perception and behavior of pedestrian users in the City of Tasikmalaya.
Model of sustainable development of smallholders in Riau Province
Authors: Nurhamlin  , Rasyad Aslim , Zulkarnain  , Suwondo
Published: August 2019

Natural rubber has countless significant roles in human life. Rubber plants have the ability to maintain natural functions (they serve as carbon producers, conservationists of land and water, and habitats for wildlife) and they also produce many added values in terms of social and economy for rubber farmers or smallholders as well as become sources of their living and income. The price of natural rubber in the international market has significantly dropped in the last decade; leaving many rubber farmers or smallholders to live in poverty. Many programs to elevate the prosperity of rubber farmers or smallholders have been created and applied by the government of Indonesia but none of the programs has been deemed successful according to the analysis results of Multi-Dimensional Scaling (MDS), the sustainable ecological index (52.95%), technological sustainability (62.35%), economical sustainability (60.18%), social sustainability (53.62%), and institutional sustainability (20.73%). The institutional management of rubber farmers is highly expected to increase the development of rubber farmers so that each and every one of them may have high competitiveness which in turn will sustainably improve their prosperity in the future.
Biodegradability of PLA and Tea Waste Composites Based on “CHAMU” and the “Tea Waste Recycling System”
Authors: Gao Pin , Ogata Yoshito
Published: August 2019

This paper proposes and explains the concept of “Chinese Pinyin of tea and wood (CHAMU)” and the establishment of the “Tea Waste Recycling System” for mitigating the problem of tea waste disposal in the tea production process. Based on the “reuse of fully biodegradable waste” proposed in the “Tea Waste Recycling System,” this paper investigates existing biodegradation studies related to plant materials and analyzes the factors that contribute to the degradation of plant material. This paper analyzes the composition of tea waste and establishes a theoretical basis for the biodegradation of tea waste. The soil-buried method was used to test the degradation performance of samples prepared from polylactic acid (PLA) and tea waste composites made by injection molding.This paper mainly focuses on the experiment and discussion of the biodegradability of “CHAMU” materials and considers a theoretical basis to assist in the establishment of a tea waste recycling system.
Mechanical design and dynamics system identification of two-section Flapping Wing Aircraft
Authors: Liao Wei , Ye Zhixian , Song Guanghua , Yang Bowei
Published: August 2019

The mechanical design and system identification of the Flapping Wing Aircraft (FWA) has always been a problem. In this paper, we design a two-section FWA through the study of bird flight, where the wing structure is divided into the inner wing and outer wing, which can imitate the flight of birds. When flapping upward, the wings can be folded to reduce resistance, and when flapping downward, the wings can be expanded to increase lift. This flying method can improve the flight efficiency. The aircraft we designed has achieved flexible flight under human operation. Aiming at the complex problem of dynamic modeling of FWA, this paper proposes a linear system model by analyzing the force of the aircraft.We use the collected flight data to train the system model. The training of the model uses the gradient descent method to minimize the loss function, and the accuracy of the model is verified with the test data. The experimental results show that the system model can accurately calculate the acceleration, velocity, angle velocity and orientation of the aircraft based on the current control input.
Research on Axial Flow Compressor Fault Diagnosis Based on Wavelet Analysis
Authors: Zhao Weili
Published: August 2019

The pressure signal of the axial compressor contains important information that reflects the working state of the compressor. The pressure signal in the compressor can be analyzed by wavelet analysis, which can provide an important basis for judging the working state of the compressor. In this paper, an axial-flow compressor fault diagnosis method based on wavelet analysis is proposed, which can be used to process the signal collected by the sensor in the compressor, and then to judge the state of the engine. The results show that the method can quickly and effectively identify the fault characteristics of the compressor and provide a new way for the rapid identification of the compressor fault.