bluuebunny/crossref_metadata_2025 huggingface dataset:
Evaluation of Ecosystem Services in Altay Region of Xinjiang
Authors: Xiong Yufei , Lei Na , Xu Hailiang
Published: August 2019

The Altay region of Xinjiang is rich in natural resources. It is a gathering place for energy resources in the northern part of Xinjiang and even in Xinjiang. Due to human activities and natural disasters, the ecology of the Altay region has been destroyed to some extent. For the ecological sustainable development of the Altay region, maintaining the ecological environment stability of the Altay region, assessing the value of ecosystem services in the Altay region, understanding the changes in the value of ecosystem services in the Altay region at this stage, and providing scientific and sustainable management and efficient management of environmental resources basis.
Application of Data Mining Technology in Analyzing the Impact of Mileage on Unqualified Rate of Vehicle Emission Inspection
Authors: Tuu Nguyen Van , Chu Jiangwei
Published: August 2019

The study uses data mining method to analyze the impact of mileage on the unqualified rate of vehicle emission inspection. The result of data mining shows that with the increase of mileage, the unqualified rate of commercial vehicles and noncommercial vehicles increased. Specifically, in the range of 0-200,000 km, the emission inspection unqualified rate of commercial vehicles is twice that of noncommercial. In the range of 200,000-600,000 km, the emission inspection unqualified rate of commercial vehicles is always higher than that of non-commercial vehicles. This result shows that mileage has a significant impact on vehicle emission status, and the unqualified rate of vehicle emission inspection is proportional to mileage mission inspection data.
Research on the Improvement of Ecological Development of Salt-alkali Land in Tianjin
Authors: Wang Yangyang
Published: August 2019

This paper studies the ecological development and improvement measures of the two important saline-alkali land in Dongli Lake Resort in Dongli District and Sino-Singapore Eco-city in Binhai New Area of Tianjin, and puts forward the harm caused by saline-alkali land to the ecological environment. It also provides suggestions for ecological development and improvement of saline-alkali land.
Study on Environmental Impact Factors of Carbon Emissions and Air Pollution Control in Transportation Industry
Authors: Zhuang Hu , Bai Yujuan
Published: August 2019

Since the industrial revolution, global warming has become more and more serious. Existing research shows that the significant increase in greenhouse gas emissions such as CO2 is the most important cause of global warming. Therefore, all countries have begun to formulate practical and feasible carbon emission reduction policies and measures. China is the largest developing country in the world and the largest energy consumer, facing many pressures to reduce emissions. This paper takes the carbon emissions of China’s transportation industry as the research object, based on the carbon emissions of China’s transportation industry from 2003 to 2017. Through the analysis of data, transportation industry added value, transportation intensity, transportation energy intensity and transportation energy structure were introduced to study the environmental impact factors and air pollution control of China’s transportation industry carbon emissions. Through the expanded STIRPAT model, the order of influence of various factors is ranked from the largest to the smallest: population size, transportation energy structure, transportation intensity, transportation energy intensity, transportation industry added value. This paper conducts a comprehensive and in-depth study on the influencing factors of China’s transportation industry carbon emissions, identifies the main influencing factors, and lays an important theoretical foundation for China to develop emission reduction targets and measures that meet environmental requirements and self-development.
Comprehensive Evaluation of the Eco-Environmental Carrying Capacity of Beijing-Tianjin-Hebei Urban Agglomeration
Authors: Li Jian , Zhou Yongkai
Published: August 2019

In order to study the eco-environmental carrying capacity of Beijing-TianjinHebei urban agglomeration, this paper constructed the evaluation indexes system of the urban eco-environmental carrying capacity of Beijing-Tianjin-Hebei based on the DPSIR concept model, determined the weights of indexes by entropy method, evaluated the urban eco-environmental carrying capacity combined with TOPSIS method, and analyzed the urban eco-environmental carrying capacity of Beijing-Tianjin-Hebei in 2012-2016 through horizontal comparison and longitudinal analysis. The results show that the spatial differences of Beijing-Tianjin-Hebei city’s eco-environmental carrying capacity are obvious, showing the characteristics of “strong in the middle north and weak in the south”. Since 2014, the eco-environmental carrying capacity of 13 cities in Beijing-Tianjin-Hebei has been significantly improved, and the effect of eco-environmental governance is remarkable.
Research on a new energy-recovery system for hybrid hydraulic excavators
Authors: Zhang Daqing , Gong Jun , Zhao Yuming , Liu Changsheng , Hu Peng , Tang Zhongyong
Published: August 2019

Hydraulic excavators, especially medium and large excavators, waste a lot of energy during the frequent lifting-lowering process of its boom. Recovery and regeneration the wasted energy is an important means to achieve energy saving and emission reduction of excavators. In this paper, a potential energy recovery and regeneration system based on a multi-cylinder structure working device is invented. Firstly, the theoretical analysis of the system, and the modeling and simulation research are carried out. Results show that under the same boom-single-action conditions, the energy-saving efficiency of the excavator equipped with energy recovery system can reach 33%, it has important reference significance for evaluating the energy efficiency of the new system.
Evaluation Model and Analysis of Lithium Battery Energy Storage Power Stations on Generation Side
Authors: Xu Qian , Zhang Lijun , Sun Yikai , Zhang Yihong , Liu Yingxin , Li Mingzhu
Published: August 2019

With the advancement of smart grids, energy storage power stations in power systems is becoming more and more important, especially in the development and utilization on generation side. Environmental issues and energy rises have driven the development of distributed energy, and have also promoted the development and application of energy storage power stations. This paper analyses the indicators of lithium battery energy storage power stations on generation side. Based on the whole life cycle theory, this paper establishes corresponding evaluation models for key links such as energy storage power station construction and operation, and evaluates the reasonable benefits of lithium battery energy storage power stations on generation side. Compared with the existing evaluation methods at home and abroad, the model in this paper is more in line with the construction progress of China’s energy storage power station, and has great significance for the commercial application evaluation of China’s lithium battery energy storage power stations on generation side.
Feasibility Study on Quality Standards for Patrol and Inspection Transmission Lines by Helicopter
Authors: Du Wei , Sun Hongbo , Li Yuanyuan , Cheng Haitao
Published: August 2019

The framework for the basic content of quality standards for patrol and inspection by helicopter in power industry is designed through the analysis carried out to the current status of patrol and inspection business of the State Grid Corporation of China, especially the problems in aspects such as false alarms of defect, lack of standardization in descriptions of defective photos, abandoning of aviation and carryover lines, untimely submission of products, and incomplete submission of products, etc., and on the basis of the method of correlation analysis and analysis of factors of influence. And based on that, it formed the inner quality standard of the State Grid Corporation of China are formed.
The research on the current capability and insulating properties of 35 kV/1 kA CD HTS cable witness samples
Authors: Li Jichun , Zhang Liyong , Ye Xinyu , Xia Fangmin , Cao Yujun
Published: August 2019

Due to the high capacity and low loss, high temperature superconducting (HTS) cable using Liquid N2 as the coolant has attracted the widespread attention in the field of the modern power technology. A 35 kV/1 kA cold dielectric (CD) high temperature superconducting (HTS) cable demonstration line, which is in the length of 100 m, has been established. To verify the design of the superconducting cable structure, the witness samples in the length of ∼1.0 m were fabricated to evaluate the current capability and insulating properties, such as lightning impulse voltage and alternating voltage tests. The results showed that the critical current (IC
) of the superconducting layer and superconducting shield layer was measured to be 1650 A and 3000 A respectively, and the voltage waveform of superconducting layer revealed no apparent increase during the testing process. Meanwhile, it could be also indicated from the results of high voltage tests that the insulating properties of HTS cable conform to the requirements of the standard GB/T3048.8-94.
Philosophy and Practice of Classification and Hierarchization of Power Distribution Network Planning and Design Standard System
Authors: Wang Yifei , He Yuqing , Xie Linjin , Sun Chongbo , Yuan Kai , Yang Lulu , Wu Kuihua
Published: August 2019

The integration of distributed power sources and other new-type equipment to power distribution network places higher requirements on the planning of power distribution network. Due to lack of scientific and reasonable classification and hierarchization methods, overlap or even contradiction among China’s existing power distribution network planning and design standards is becoming increasingly severe. Based on the principles of standard classification and the existing standard system, a classification and hierarchization method suitable for the power distribution network planning and design standard system is proposed in this paper. The power distribution net-work planning and design standards are classified into five classes. And then, after analysing the content attributes of standards at each level and the relation of inclusion among standards at different levels, two hierarchization methods including Content Evaluation Method and Comparative Analysis Method are proposed to determine the level of a standard. Finally, this paper illustrated the effectiveness of the two methods by examples. These research results provided theoretical guidance and reference for the effective management and efficient application of standards and the establishment of a modern power distribution network planning and design standards system.
Risk Assessment of Microgrid Based on Credibility Entropy Weight Coefficient Evaluation Model
Authors: Li Yongjie , Tang Hao , Guo Xinju , Li Lingyun
Published: August 2019

As a complex network, microgrid must have some weakness. Risk assessment of microgrid will help to find out these weakness so as to put forward the targeted improvement measures and provide strong support for the optimal operation of microgrid. According to the risk assessment of microgrid, this paper establishes a microgrid risk index system, which includes the first-level indexes and corresponding sub-indexes of structural safety, operation safety and technical safety, and innovatively establishes a credibility entropy weight coefficient evaluation model, and calculates the weight of each index layer and the comprehensive risk assessment score of the microgid. Furthermore, the risk assessment of a microgrid system is analyzed by quantitative calculation in order to make the assessment results more reliable and provide reference for further improving the risk assessment of the microgrid.
Failure Analysis and Suggestions of Composite Insulators
Authors: Zheng Jianjun , Xie Liming , Tan Xiaomeng , Fang Wenxuan , Qiao Xin
Published: August 2019

In this paper, the development of composite insulators at home and abroad was firstly introduced. Then several common failure forms and mechanisms of composite insulators were systematically expounded, which mainly included the failure of sheds and sheaths, brittle and decayed fracture of cores. In addition, the fracture of composite insulator cores had been the greatest threat to the safe operation of transmission lines. At last, to provide a reference for the operation and maintenance, some suggestions and measures for design, production and installation of composite insulators were put forward from practice.
Research on Optimal Distributed Power Supply Configuration under Air Pollution Prevention
Authors: Li Meng , Lin Yi , Lin Zhangsui , Wu Wei
Published: August 2019

Scientific planning and development of new energy resources has become the key to solve air pollution. How to optimize the allocation of distributed generation (DG) is the premise of effective development and utilization of distributed energy. In order to solve the problem of air pollution, this paper chooses the optimal allocation index of distributed generation, establishes the objective function and constraints, and optimizes the allocation of distributed generation. The results of numerical examples verify the validity of the proposed model and provide a reference for effectively solving the problem of air pollution.
Economic evaluation of 20,000 M3/Day seawater desalination coupling with floating reactor nuclear power plant
Authors: Li Junwen , Sun Haijun , Ye Xiaoli , Gao Shan , Yang Jifei
Published: August 2019

The coupling of floating nuclear reactor with different desalination processes was economically evaluated by using a desalination economic evaluation program (DEEP-5) software and a method of levelized annualized production water cost. Three desalination processes, namely, Multi-effect distillation (MED), multi-stage flash (MSF) or reverse osmosis (RO). The capacity of the plant was 20,000m3/day and its energy source was 100MWt nuclear power plant. The analysis indicated that water costs with the RO process have stronger economic competitive comparing to distillation processes, without regard to changes in water quality. The sensitivity analysis results showed that the sensitivity factors affecting the cost of desalinated water are, in order, discount rate, interest rate, Specific Construction Cost and Condensing temperature.
Abnormal vibration analysis and treatment for No. 3 bearing bush of ultra - supercritical 1000MW turbine
Authors: Li Wanjun , Li Xiaoxia , Zhang Deke , Niu Qingliang , Huang Tianqi
Published: August 2019

When a power plant ultra-supercritical 1000MW steam turbine generator set was started in a cold state, the vibration value of NO.3 bearing bush exceeded the alarm value. Based on the mechanism of vibration, the fault diagnosis and troubleshooting of excessive vibration of the NO.3 bearing bush were carried out by consulting the historical operation trend and checking the maintenance records, and the cause of the fault was accurately analyzed. By adopting effective measures such as setting up the heating system of the middle pressure cylinder and setting up the starting steam parameters reasonably, the problem of excessive vibration value of the NO.3 bearing bush was completely solved and the hidden danger of equipment operation safety was eliminated.
Study on the warm-recycled mechanism of SMA and the road performance
Authors: Fan Qian , Wu Chuanhai , Xu Xinquan
Published: August 2019

In order to evaluate the performance of warm-recycled asphalt mixture with SMA, based on analyzing the characteristics of gradation, aggregate and aging asphalt with reclaimed asphalt pavement (RAP), The regeneration methods of high grade soft asphalt mixed at low temperature and hard natural asphalt remixed with modification to enhance are proposed, and it was used to prepare recycled asphalt mixture with SMA and different RAP contents(0, 10%, 20%, 30%). And its high temperature performance, water stability, low temperature performance and fatigue performance were comprehensively evaluated. The result showed that soft and rock compound regeneration technology is feasibility, the natural asphalt with strong polar functional groups was modified and strengthened by remixing to improve the comprehensive performance of asphalt; the performance of warm mix recycled mixture with the 7:3 ratio of 110 # asphalt matrix and TLA lake asphalt is better; the best dosage of RAP is 20%; compared with HMA and SBS modified asphalt mixture, temperature can reduce 15°C and 30°C to 35°C respectively.
Vibration Analysis of GIS Pipe System in Transformer Substation
Authors: Zhang Huakai , Jian Youwei , Guo Qijun , Deng Hualing , Jian Mingjian , Zhang Guangcheng , Du Baoshuai
Published: August 2019

Due to the influence of electromagnetic force, the running GIS gas (insulated switchgear) will produce a certain vibration frequency. The other factors, such as resonance, disturbance of internal gas, bring abnormal vibration to the GIS shell. Because of the bad effects followed, the components of GIS can be damaged to the leakage which will lead to power failure in serious cases. In this paper, the vibration analysis of a 1000kV UHV substation 500kV area GIS is carried out. The vibration frequency of the GIS equipment was obtained by field vibration detection, and through the finite element modal analysis, we got the natural frequency and modal shape. It was found that the vibration frequency of the GIS shell is normal reportedly, and the possibility of resonance is ruled out.
Research and Application of Smart Substation Protection Based on Visual Remote Sensing Image Processing
Authors: Ni Chengxiang , Zhu Changdong , Guan Xibing , Yang Bin , Xian Wanchun , Hua Jing , Xie Meng , Jin Huawei
Published: August 2019

Under the background of the rapid development of Smart Substation in the new era, the relay protection device plays an important role in the operation of Smart Substation, which has great guarantee for the safety and stability of the power system. However, in the current situation, the relay protection equipment or the failure of the line is very common, which will not only hinder the operation of other systems, but also greatly increase the economic loss caused by system failure. With the continuous development of visual remote sensing image processing, the visualization technology is introduced into the design of remote sensing image processing system and applied in the protection system of Smart Substation. The visualized remote sensing image processing system technology can improve the efficiency of relay protection of Smart Substation. It can be seen that the application of this technology in Smart Substation has obvious superiority. Therefore, the research and improvement of the relay protection scheme for the relay protection of the new generation of Smart Substation is particularly important, which is convenient for the safe operation of the power system.
Research Status and Development Trend of Solar Heating Technology
Authors: Meng Xin , Feng Rong , Yang Yongping
Published: August 2019

As one of the renewable green energy sources, solar energy has great advantages in energy conservation and environmental protection. With the deepening of the research on solar heating technology, more issues have been discussed. This paper summarizes the research status of solar heating technology from two aspects of solar energy heat collection and heating implementation. Firstly, heat collection technology is still the key to solar energy heat utilization, which focuses on the numerical simulation of heat collector and the influence of heat collection structure on heat collection capacity. Secondly, thermodynamic analysis of heat transfer enhancement of ventilation gap and air flow in passive solar heating system is a hot topic; some scholars even put forward new heat transfer theoretical models and improved equations. Whereas in the active solar heating system, due to the imbalance and instability of solar energy, most of the research focuses on the construction of multiple complementary heating system and the corresponding optimal operation mechanism as well as the study of solar energy heat storage materials, devices and their heat storage performance. Thirdly, in view of the actual building environment in rural areas of northern China, it is proposed that using distributed solar energy collection method combined with heat storage technology and using green energy internet to distribute heat energy is the research trend of maximizing the application of solar heating in the region.
Statistical Analysis of the Structure of Total Petroleum Consumption in China
Authors: Wang Zhe
Published: August 2019

The essay firstly analyzes the present condition and the structure of the total petroleum consumption in China. Then, the method of qualitative analysis will be applied to conduct research on main essences that affects the total petroleum consumption in China to select ten indexes from acquired relevant statistics and lay out a comprehensive constitution of the total petroleum consumption in China. Subsequently, constructs a multivariate linear regression model for these ten indexes by means of quantitative analysis, and utilizes the spss software to conduct research on these influential essences. Last but not the least, the future situation of China’s petroleum energy consumption will be forecasted and relevant countermeasures and suggestions will be put forward based on outcomes of empirical analysis.
Measurement and Spatial Evolution of Regional Energy Efficiency in China
Authors: Cheng Ting , Bai Yujuan
Published: August 2019

Energy is an important factor of production to ensure sustainable development of country. There are obvious regional differences in energy efficiency in China at the present stage. In this context, this paper studies the provincial energy efficiency in China. Under the framework of total factor energy efficiency analysis, the total factor energy efficiency of 30 provinces (cities and autonomous regions) in China from 2007 to 2016 is measured by means of the global super-efficiency SBM-DEA model. Further, this article is based on the space perspective, with the aid of spatial econometric theory and methods, to the Chinese provincial total factor spatial correlation of the energy efficiency test, the results show that there are provincial total factor of energy efficiency in the space since the correlation of the regional difference of China’s total factor energy efficiency analysis and put forward the corresponding countermeasures.
Analysis and Research on the Power Generation Numerical Model of River Dynamics and Fluid Dynamics
Authors: Ping Anan
Published: August 2019

With the development of economy and the improvement of human living standards, the demand for energy will only continue to grow. As one of the main renewable energy sources, River energy has made great progress. The equipment of river kinetic energy generation is different from that of conventional large and medium-sized high dam hydropower stations because of the different energy conversion modes. If the technology and equipment of Gaoba Hydropower Station are mature, the river kinetic power station system and its series technology and equipment are still in the primary stage of development. Different water flow generation methods use different platform positioning systems. In order to collect unstable water flow energy, the water flow power generation device is required to convert the mechanical energy in the water flow energy into electricity that can be used by two-stage energy conversion. Based on the fluid mechanics analysis, this paper determines the factors related to the energy conversion efficiency of the primary conversion device and the relationship between the influencing factors. I hope that I can make some contribution to the development of renewable energy.
Modeling and Control of Peak Current Mode Non-ideal Buck Converter
Authors: Xu Huifang , Liu Yiqiang , Wang Zhonghao
Published: August 2019

Based on the energy conservation method and the average modeling method of switching elements, considering the non-ideal parameters of the actual circuit, the whole peak current mode control non-ideal Buck converter system model is established. On this basis, for the equivalent power level, there are still some problems such as slow response speed and poor stability. A voltage controller compensation method is proposed and a system model including voltage controller compensation network is established. Through the analysis of the model and the simulation in Matlab, it can be seen that the model is intuitive and clear in physical meaning, which can more accurately reflect the working condition of the actual circuit. The designed voltage controller can improve the performance of the converter and can be DC-DC. The design of the converter system control circuit provides a theoretical basis.
Comparative Analysis Before and After Optimization of URL Detection Program
Authors: Yan Yi , Zhan Lichao , Zhong Susheng , Lin Xijun , Mai Xiaohui , Zhou Kaidong
Published: August 2019

Perform URL detection on the three major systems of the power grid, and obtain the program for the detection results. The whole process of the project has gone through two stages, namely the original program construction and the optimized program construction. The original program was built in a cluster with 918 menus and 36 ips and ports. Since there is not a proper number of threads, a large number of URLs are waiting in serial during URL detection; the final data is exported to excel, resulting in The detection of the cluster resources is wasted, the total length of the probe is about 35 minutes; the optimized program adds enough threads, and the data is exported to the excel mode, the data is exported to the log file through the log framework, and finally A total of 2 minutes, the efficiency increased by 1650%.
Evaluation of the Implementation Effect of Power Demand Response under the Background of the New Power Reform and Electricity
Authors: Sun Liping , Wang Lifang , An Qian , Pan Mingming , Tian Shiming , Wu Lei
Published: August 2019

In recent years, more and more regions have carried out demand response projects. It is urgent to construct an evaluation indicator system and comprehensive evaluation model to evaluate the implementation effect of power demand response under the background of the new power reform and electricity. This paper uses literature research, expert consultation and frequency statistical methods to construct an evaluation indicator system for power demand response implementation in the context of demand response new power reform and electricity; and combine the TOPSIS method with the grey correlation evaluation to construct a grey relational ideal point combination analysis and evaluation model; finally, the theory is applied to practice, to Beijing, Shanghai, Jiangsu and Foshan. The case study of the city is an example to verify the effectiveness of the evaluation model.
Changes of chlorophyll value and plant height in leaves of different soil materials
Authors: Shi Lei
Published: August 2019

The chlorophyll content in leaves can reflect the photosynthetic function of plant leaves. In this study, the chlorophyll content of Arctium lappa L. with different material profiles was monitored by chlorophyll analyzer. The overall trend of chlorophyll was from low to high. After a peak, the chlorophyll content gradually decreased and then tended to be flat. This indicated that Arctium lappa L. grew from early stage of development to maturity and then to decline. The results showed that the SPAD value of chlorophyll in shale + clay and perlite + clay potted plants remained between 8 and 25 from the beginning to maturity. The fluctuation of chlorophyll value was small in the first 20 weeks of monitoring, and increased rapidly in the following 4 weeks. Vegetable carbon and clay fluctuated obviously in the 9th week, and the chlorophyll content was stable and high in the 13th to 16th week. During the whole monitoring period, the content of chlorophyll SPAD in the leaves of all plants did not fluctuate much in the first six weeks, and reached the highest average value in 13 to 16 weeks. The chlorophyll SPAD value of the potted plants reconstructed by the mixture of vegetable carbon and clay remained between 38 and 43, the chlorophyll SPAD value of the potted plants reconstructed by the mixture of vermiculite and clay remained between 20 and 25, and the potted plants reconstructed by the mixture of perlite and clay. The SPAD values of chlorophyll in shale and clay mixtures remained between 8 and 9, the SPAD values of chlorophyll in shale and clay mixtures remained between 9 and 10, and the SPAD values of chlorophyll in whole clay mixtures remained between 21 and 24.
Study on The Influence of The Application of Nano-Starch About the Paper Properties as Spray-Starch
Authors: Cui Wanting
Published: August 2019

In this thesis, we study the application of nano-starch in ordinary sizing starch was replaced by nano-starch as surface sizing in paper surface sizing, and its impact on paper properties was examined. It includes the study of Nano-starch, its influence on the performance of the sizing and on paper properties as sizing agents. The experimental data showed that the viscosity of the nano-starch solution was moderate. And the viscosity grown slow with the increase of concentration. JN and sodium dihydrogen phosphate both improved nano-starch solution viscosity. The effect of JN is more than sodium dihydrogen phosphate. When conventional surface sizing starch was replaced by Nano-starch, the physical properties of the paper, such as the tightness, burst index, breaking length, tear index, folding degree, sizing degree, have been greatly improved. And in comprehensive consideration, the best ratio between conventional surface sizing starch and Nano-starch was 6:2. The deposition properties of Nano- starch was good.
Preparation of Core-shell Magnetic Nanoparticles Carrier for Treatment of Emulsified Oil
Authors: Ding Yeli , Zhang Shaojun , Shi Jianqiang , Jiang Chunxiao
Published: August 2019

The Fe3O4 nanoparticles was prepared by chemical co-precipitation method, and modified with polyethylene glycol and lauryl sodium sulfate to obtain amphiphilic magnetic core. Core-shell magnetic particles (CMP) were prepared by modified dispersion polymerization method. After characterization, the contact angle θ of material was 133.4°, and the specific surface area of CMP reached to 1032.43 m2/g. The absorption rate up to 27.1007 g/g, and the oil release rate was up to 96.19%, ensure it fully adsorptive to the emulsified oily wastewater. The saturated magnetization of MPP was 3.95 emu/g, showed strong magnetic response. It is beneficial for recovery and reuse the material. After 12 hour degradation of crude oil, CMP immobilized with petroleum oil degrading strains to treat emulsified oil was 13.86% higher than that of free bacterial cells. The results of this research provide a reference for the rapid adsorption and degradation of emulsified oil wastewater by immobilized microorganisms with novel magnetic materials.
MoS2 with structure tuned photocatalytic ability for degradation of methylene blue
Authors: Li Yulan , Xiang Fei , Lou Wenhao , Zhang Xinlun
Published: August 2019

In this work, a series of nanostructured molybdenum disulfide (MoS2) with various morphologies, such as spherical, flower-like, coil and hollow were synthesized via a one-step hydrothermal method. The photocatalytic properties of as obtained MoS2were evaluated by degrading methylene blue (MB) under visible light. Interestingly, the flower-like MoS2 exhibited the best photocatalytic activities. It is ascribed that the suitable porous structures of flower-like MoS2 can increase the number of exposed active sites, which facilitate the efficient adsorption and transfer of MB to the active sites. Meanwhile, the special structure of flower-like MoS2 can improve light absorption efficiency owing to the increasing of light paths. Furthermore, its 2D stacked petals possess abundant active sites, which will effectively affect the photocatalytic efficiency. This study indicates that the surface area of nanomaterials is not a dominated factor in photocatalytic performance. The surface morphology has a great influence on the photocatalytic performance, which provides a feasible guide for synthesizing efficient photocatalytic nanomaterials.
Optimization of fermentation conditions for oil production by strain 6-18
Authors: Zheng Chaocheng
Published: August 2019

By investigating the effects of carbon source, nitrogen source, carbon-nitrogen ratio and inorganic salts on oil production of strains, the optimum carbon source, nitrogen source, carbon-nitrogen ratio, types and concentration of inorganic salts were determined. By investigating the effects of liquid loading, culture temperature and initial value of medium on oil production of strains, the optimum culture conditions were determined.
Analysis of bioactive compounds and antioxidant capacities in ‘Nainaiqingcai’ mustard
Authors: Qu Wen , Zhang Fen , Ma Jie , Wu Rui , Chen Chunyan , Ma Wei , He Yuankuan , Zhou Ping , Sun Bo
Published: August 2019

This experiment analyzed the bioactive compounds content and antioxidant capacities of different edible parts (the leaves, petioles and bolting stem) of ‘Nianaiqingcai’ mustard. The results showed that significant differences were found among different edible parts. The levels of chlorophylls (chlorophyll a, chlorophyll b, and total chlorophyll), carotenoids (neoxanthin, violaxanthin, lutein, β-carotene and total carotenoids), proanthocyanidins, flavonoids, total phenolic and antioxidant capacities were all followed as the trend of leaves > petioles > bolting stem, and the bioactive compound contents and antioxidant capacities of the leaves were far greater than other parts. Correlation analysis showed that there was a significant positive correlation between all indicators. The correlations between individuals of chlorophyll and carotenoids were extremely high, and the level even reached 1.000. Even the lowest correlation coefficient between ABTS and total phenolics was as high as 0.965. This study provides a theoretical basis and data reference for people’s daily diet
The relationship between work period and use of personal protective equipment with respiratory disorder complaints in brick craftsman in Sintuk Toboh Gadang District Padang Pariaman Regency 2017
Authors: Lastri Pirna , Dewata Indang , Sari Mila
Published: August 2019

Respiratory disorders are not only caused by high concentration of dust, but also affected by employee’s habit and characteristics. Based on the data from Sintuk Health Center, there are 145 cases of ISPA in this region. Over all, the brick craftsman smoke and don’t use the personal protective equipment. This study aims to determine the relationship between work periods and use of personal protective equipment with respiratory disorders on brick craftsman in Sintuk Toboh Gadang, Padang Pariaman Regency 2017. The research is descriptive analytic research with cross sectional approach which was conducted on 11-21 August 2017. This study used Cluster Sampling with 73 people of total sampling which then using Accidental Sampling and questionnaire to collect the data. The data analysed by using Chi-Square test. The result shows that among 73 respondents, there were 47 people (64,4%) infected respiratory disorders, 41 (56,2%) of times work, 39 (53,4%) work periods, and 55 people (75,3%) do not use personal protective equipment while working. Statistical test revealed that the variables which have relationship with the habit of respiratory disorders were times work (p=0,003, OR=5,304), work periods (p=0,000, OR=7,857), and use of personal protective equipment variables (p=0,004, OR=5,857). From the research, it was found that times work, work periods, and use of personal protective equipment have a strong impact to respiratory disorders. It is suggested that brick craftsman need to use the personal protective equipment in producing craftsman. Therefore, long work periods do not give impact to the respiratory disorders.
Sangon and Acacia plant suitability for land reclamation of coal mines in PT. Karbindo Abesyapradhi Sijunjung District
Authors: Nazki Admizal , Carlo Nasfryzal , Dewata Indang , Rahmi Fitratul , Efendi Rihan
Published: August 2019

The loss of the vegetation indirectly had removed the functions of the forests in regulating water system, controlling erosion and flood, absorbing carbon dioxide, supplying oxygen and controlling temperature. One of the efforts done to restore the quality of the environment around mining areas was by doing reclamation in accordance with the Regulation of Indonesian Government No. 78 Year 2010. This research applied cross-sectional design. The sample was taken in the areas vegetated. The variables studied were the chemical content of the soil (N, P, K, Ca and Mg), pH and Cation Exchange Capacity. The sample spread out in five areas reclaimed in Sungai Tambang PT Karbindo Abesyapradhi. The result of the research showed that the reclamation was done by planting sengon and acacia trees. The fertility of the soil (clay texture, acidity, Ca, Magnesium, Cation Exchange Capacity of the soil, C-Organic and N-total of the soil) in the reclaimed areas was similar. However, partially affecting both plant growth and sengon acacia tree is a cation exchange capacity and Soil Texture. It was recommended to PT Karbindo Abesyapradhi to maintain and care for reclamation has been done, because if based on the evaluation of the report on the implementation of reclamation showed reclamation does not meet the criteria of success, the Minister, the Governor, or the Regent / Mayor in accordance authority may assign a third party to conduct reclamation activities or entirely by using collateral reclamation.
Adaptation model after Tsunami hazard 1994 at South Beach East Java
Authors: Prasetyo Ketut
Published: August 2019

Beached South of East Java passed by tectonic plate have tendency become area which trend of to tsunami disaster. Phenomenon the happening of year tsunami disaster 1994 which have swallowed good victim of soul and also estate do not cause to discourage in as resident to linger on the in place. Tsunami as source of pressure adapt environment live beached resident Beached South of East Java likely not yield is same response sort of environment. On that account, passing approach qualitative and is quantitative of researcher wish to know adaptation strategy model used by resident in Beached South of East Java Province. Research method by use facto expose method, while to collect data by porposive sample technique. The result of the researched hence known that environmental adaptation strategy model at Beached South of East Java after tsunami disaster, that is: First of Pancer model, model Pancer distinguish that its resident stand at bay and back to environment of is ex-tsunami disaster, them believe the happening of eye tsunami disaster because God destiny. Second of Lampon model, characteristic model Lampon differ from characteristic model Pancer. At Lampon model, Tsunami pasca resident leave environment which have swallowed victim, their have of migration to in more peaceful environment. Third model Watu-Ulo, at this model of resident remain to live location but they try to make barrier dam in the form of fence and croopes. Gift of is name of model like Pancer model, model Lampon, and Watu-Ulo model is the name of model which pursuant to coastal environment or location the happening of tsunami knowledge of Resident about very low tsunami later then new tsunami disaster is once experienced of by resident and also mount trust that tsunami disaster is Destiny Which Single The most, hence third this matter equipment Coastal resident characteristic of South East Java in adapting with environment Conclusion result of research is resident response in Coast South East Java differ in accepting and avoiding tsunami disaster, while environmental adaptation model at Lampon society assessed by most peaceful. So that given suggestion that for the resident of as in Pancer and Watu Ulo is immediately given by counselling to increase awareness of resident about level of danger which possibly will befalling it, and also give training of is way of facing tsunami disaster if in a moment happened.
Tenurial conflict between parties in the technical implementation unit of the Banjar Regency Forest Management Unit in the Province of South Kalimantan
Authors: Saputra Joni , Dewata Indang
Published: August 2019

The main issues in the management of forest resources at present, include: legal uncertainty over forests, high tenure conflicts over forest areas and uncertainty over community management areas over forest areas. One of the root causes of legal uncertainty over forests is overlapping policies governing forest management. The purpose of this study was to find a solution in handling tenurial conflicts at UPT KPH Banjar Regency. In the implementation of tenure conflict research the methodology used was interviews. The results of this study found different perceptions about forest, where the community considers the forest when there is still physical forest, on the other hand forestry based on law 41 of 1999 is not so and there are different perceptions between BPN and Forestry relating to the status of the region. BPN together with the Regional Government are the parties that strengthen the position of the community with the certificate issued and the definitive village decision issued. The existence of FMUs is expected to be streamlined to build synergies between institutions in forest utilization and management as outlined in a work program, therefore integrated coordination of the Forestry Planning Agency, Director General of Forestry Production Development, Directorate General of Forest and Land Rehabilitation, BPHP, BPKH and BPDAS.
Effect of amino acids intake of rubber seeds processing as alternative comestible length for infants born against
Authors: Dewi Puspita Sari Ratna
Published: August 2019

Sumatra and Kalimantan are the region with the area and the highest rubber production in Indonesia, including Lampung province that is also abundant production of rubber seed every year. Rubber seed contains a protein that is high enough. With the high crude protein, it can be used to make rubber seed chips and snacks potential to be used as a source of protein for pregnant ibi amino acids to help meet the mother during pregnancy. Sufficient amino acid intake during pregnancy associated with a body length of birth. This research was observational analytic with cross sectional design. Sampling method used in this study is consecutive sampling. The study was conducted in East Lampung in 2016. The subjects were all pregnant women including rubber farmers in East Lampung region and met the inclusion criteria of the study. The samples obtained were 124 pregnant women and their babies. Data were analysed descriptively. The results obtained indicate that rubber seed chips can help meet amino acid intake during pregnancy and affects the baby’s body length at birth. From the sample of the research note that 89.5% of the infants had a body length of> 48 cm (normal) and 10.5% of infants had a body length of <48 cm (short). The nutritional intake of pregnant women is very important to prevent children born with a body length is not normal. The results obtained indicate that rubber seed chips can help meet amino acid intake during pregnancy and affects the baby’s body length at birth. From the sample of the research note that 89.5% of the infants had a body length of> 48 cm (normal) and 10.5% of infants had a body length of <48 cm (short). The nutritional intake of pregnant women is very important to prevent children born with a body length is not normal. The results obtained indicate that rubber seed chips can help meet amino acid intake during pregnancy and affects the baby’s body length at birth. From the sample of the research note that 89.5% of the infants had a body length of> 48 cm (normal) and 10.5% of infants had a body length of <48 cm (short). The nutritional intake of pregnant women is very important to prevent children born with a body length is not normal.
Relationship of determination pesticide doses with horticultural farmers health complaints in Cikajang, Garut
Authors: Warno Utomo Suyud , Fauzi Rizqy , Kusnoputranto Haryoto
Published: August 2019

The role of pesticides in agriculture is crucial. Pesticides are needed to protect plants from pests and plant diseases. The opinions among farmers about more doses of pesticides used in plants will be more effective in protecting plants. The pesticides use that do not comply with the rules of use indirectly cause health complaints. This study aims to identify the correlation between the behaviour of farmers in determining the dose of pesticides with health complaints caused to farmers in Cikajang District, Garut Regency. This study uses primary data with 105 subjects and also sprayed plants using pesticides. The study design was cross sectional and the data were analysed bivariately with chi-square. This study there was no significant correlation between the behaviour of farmers to determine the dose of pesticides with health complaints that occurred (P = 0.079 with OR = 2.053 95% CI 0.936 - 4.502). Farmers behaviour in determining the dosage of pesticides to be applied in plants is not related to health complaints that occur in farmers. This is probably caused by other factors that affect health complaints.
Waste Management in Kurai Taji Market Sub-District South Pariaman, Pariaman City
Authors: Arifin Hendra , Syah Nurhasan , Barlian Eri
Published: August 2019

Waste problems will not be separated from behavioral problem and lifestyle. Increased activity in the market greatly influences the quantity of waste piles in the market environment. This research began from the findings of poor waste management at Kurai Taji Market. Here, Waste management is not in accordance with the standard as according to Cunningham (2004) which is the stage of modern waste management consists of 3R (Reduce, Reuse, Recycle) before being destroyed or destroyed. The purpose of this study is to see how the appropriate form of management and strategiess are used in waste management at the Kurai Taji Market. The methodology used is descriptive qualitative. Waste Management in Kurai Taji Market, Pariaman City is as follows; Waste management in the Kurai Taji Market with the concepts of Reduce, Resue, and Recycle (3R) has not been implemented by market managers because the traders as a whole and the communities around the market have not reduced waste generation and reused market waste and they also do not have a habbit how to care the environment at Kurai Taji market.