bluuebunny/crossref_metadata_2025 huggingface dataset:
Life cycle assessment of sewage sludge treatment in China
Authors: Wang Xin , Yu Fuyang , Fan Qingxin
Published: August 2019

Taking sewage sludge (SS) as the research object, establish 6 scenarios of sludge treatment, S1: concentration and dehydration-cement preparation (CdCpd); S2: concentration and dehydration-lime stable-cement preparation (CdLsCpd); S3:concentration and dehydration-drying-landfill (CdDrL); S4: concentration and dehydration-drying-incineration-landfill (CdDrIL); S5: concentration and dehydration-drying-incineration-concrete preparation (CdDrICp); S6: concentrate-anaerobic digestion-land use (CALu), LCA is used to compare the environmental impacts of S1-S6 in China, find the unit that has a greater impact on environment in different treatments and substances and energy that have a greater impact on the environment in different units. The results show that the environmental impacts dealing with 1t SS (water content 80%) can be sequenced as S3 > S4 > S5>S6 > S1 > S2; the direct pollutants generated in the unite of direct landfill and incineration and the thermal energy required for drying have a great impact on the environment; after a series of treatments of SS for concrete preparation and cement preparation, that is, resource utilization can fix certain elements in the sludge, so that the environmental impact can be alleviated; the transfer of contaminants during the SS treatment process is a matter of concern, so that the focus of the SS treatment should be on the fixation of pollutants in the future.
Influencing factors and forecast of carbon emissions from transportation - Taking Shandong province as an example
Authors: Zhang Heng , Kong Xue , Ren Chuanxiang
Published: August 2019

Under the severe situation of global warming, reducing carbon emissions is an important trend in today’s society. Based on the 2003-2015 Shandong Province transportation energy consumption data, this paper uses the top-down method to calculate the carbon emissions of transportation in Shandong Province.On this basis, the grey relational degree analysis method is used to study the impact of seven factors, namely per capita GDP, total population, energy consumption per unit GDP, private car ownership, tourism income, freight turnover and passenger turnover, on the carbon emissions of transportation in Shandong Province. According to the analysis results, the above influencing factors are closely related to the carbon emissions of transportation in Shandong Province. The impact degree is from large to small: passenger turnover > freight turnover > per capita GDP > total population > energy consumption per unit > tourism income> private car ownership. At the same time, using the gray prediction GM(1,1) model to predict the carbon emissions of transportation in Shandong Province from 2016 to 2021, it is concluded that the carbon emissions of transportation in Shandong Province will continue to grow in the next few years.
Optimization of Leachate Treatment in Low Temperature by DTRO
Authors: Long Tao , Xu Xiaojun
Published: August 2019

The operating conditions of landfill leachate treatment by DTRO (Disk Tube Reverse Osmosis) was long-term monitored in a plateau area of Southwest China, and low-temperature leachate was preheated by the LFG (Landfill Gas) heating system. DTRO operating pressure was observed, then the mechanism analyzed and optimization methods recommended. The results show that the operating pressure reached the highest value of 57.87 bar when the leachate temperature is lower than 14°C. And the pressure dropped from 56.2 bar to 49.5 bar when the leachate was heated by LFG heater from 14°C to 22°C. The system performance can be improved by adjusting the temperature into a proper range. And leachate concentrate treatment by afterheat of the burner is also discussed.
Study on the Land Ecological Security and early warning in Shenzhen
Authors: Wang Meijuan , Li Yang , Huai Yangyang , Wang Xin
Published: August 2019

Land is the foundation of human survival and development, and safe land ecological condition is the decisive factor in ensuring security and stability. As the land use intensity continues to deepen and the scope continues to expand, its irrational use has caused a series of ecological security problems. Therefore, studying the relationship between land use and ecological security in the region has become an urgent problem for the current land science. Based on the improved TOPSIS method, this paper constructs a comprehensive evaluation model of urban land ecological security. The results show that land ecological pressure contributes the most to the land ecological security system. The increase of urban population density, the expansion of construction land and the increase of industrial waste emissions will affect the ecological security of the land; since 2004, Shenzhen’s land ecological security and development has gone through several stages, from primary ecological coordination to good ecological coordination - ecology Hysteresis type. It is necessary to vigorously establish and improve the land ecosystem. Besides, we need to actively carry out land ecological security warning supervision and promote the maintenance of land ecosystems and the sustainable use of land resources in Shenzhen.
Research on prediction of municipal solid waste production based on Grey Relation Analysis and Grey Prediction Model
Authors: Fan Zhiguo , Fan Yanjun
Published: August 2019

The amount of municipal solid waste (MSW) is the basic data of municipal solid waste management. It is an important basis for urban green planning to predict MSW output scientifically and accurately. Therefore, first this paper uses Grey Relation Analysis, and points out that the main factor affecting the production of municipal solid waste is the urban resident population. Then the Grey Prediction Model is used to predict the amount of MSW in Shanghai from 2005 to 2020. The prediction results show that the amount of MSW in Shanghai will reach 8.86 million tons in 2020. Finally, in view of the above analysis, this paper puts forward some countermeasures, so as to provide reference for the future environmental planning in Shanghai.
Response of plant functional traits to climate change
Authors: Zhang Jing , Li Pengzhan
Published: August 2019

Climate change has caused serious impacts on the ecosystem, including destroying the stability of the ecosystem and affecting the biodiversity of the ecosystem. Plant functional traits show good response and adaptation to environmental changes, and the change of plant functional traits will indicate climate change. It is a hot research topic to identify the mechanism of the effects of plant functional traits on climate change. By studying relevant references, this paper conducted in-depth studies on leaf functional traits, root traits and the relationship between leaf and root traits among plant functional traits. On this basis, the direction of climate change was further clarified by predicting the development trend of functional traits, and the relationship between plant functional traits and climate change was further discussed.
Research progress on contaminated soil remediation materials based on soil organic reconstruction
Authors: Li Gang , Lu Nan , Wei Yang
Published: August 2019

Soil pollution is cumulative, hysteretic, concealed and irreversible, and it is generally difficult to recover and control soil pollution. According to many years of engineering practice, Shaanxi Provincial Land Engineering Construction Group put forward the core idea of land engineering--organic reconstruction, which provides new ideas and methods for the study of soil restoration. The core of land organic reconstruction lies in material and structure reconstruction. According to local conditions, organic reconstitution can achieve good results in contaminated land restoration.
Research on Urban Eco-environmental Problems and Sustainable Development
Authors: Xing Chenchen , Ding Yu
Published: August 2019

In the process of rapid urban development, the following issue is the ecological environment problems. How to alleviate the contradiction between economic development and ecological environment and promote sustainable development has become a topic of wide concern. The ecological environment of a city is affected by many factors. Only by dealing with the environmental problems in urban construction can the environmental quality of the city be guaranteed and the sustainable development of the city be promoted. Based on the reality, this paper analyses the problems of urban ecological environment, and puts forward relevant strategies and suggestions for the sustainable development of urban ecological environment.
Applied research in volatile organic compounds (VOCs) emission from asphalt pavement
Authors: Zou Bo , Ran Deqin , Zhang Qingtao , Li Chengcheng , Lu Linguo , Fu Jiancun
Published: August 2019

Volatile organic compounds (VOCs) volatilize in quantity during production and application of asphalt. The VOCs will not only cause environmental pollution, but also affect the properties of the pavement. Therefore, the VOCs emission from asphalt pavement is a very worthwhile concern. A brief review concerning VOCs from asphalt pavement, effect of VOCs and measures to mitigate VOCs emission is presented.
Heavy metal pollution comprehensive evaluation of contaminated soil in lead-zinc mining area based on the fuzzy mathematics
Authors: Fang Zengqiang
Published: August 2019

A new comprehensive evaluation method of heavy metal pollution based on the fuzzy mathematics was constructed. The results showed that mean concentrations of the heavy metals in the contaminated soils decreased in the order of Zn > Pb > Cd>Cu > As>Ni>Cr. Leaching experiment results showed that concentration of heavy metal in leaching agent of soil is not proportional to the content of heavy metal in soil. Through fuzzy comprehensive evaluation, the solid soil environmental quality grade was heavy pollution and leaching liquid water quality standards was grade V.
Density Functional Theory Study of Li3VO4-δ
Authors: Shi Jianjian , Wang Zhiguo
Published: August 2019

The large intrinsic band gap of Li3VO4 hinders its potential application as anode material for lithium ion batteries. Here, we perform first-principles calculations to investigate structural relaxation, formation energy, surface energy and electronic structure. The O vacancy in the Li3VO4-(110) surface can enhance charge transfer and to improve the electron conductivity. This work indicates that Li3VO4-δ would be a potential anode material for batteries due to greater electron conductivity than the pristine Li3VO4.
Analysis on the change of coal consumption of low-pressure (low temperature) economizer unit
Authors: Chen Feng , Chen Yingtao , Xue Fangming , Su Jingcheng , Sun Yiqing , Liu Xiuru
Published: August 2019

This paper discusses the calculation of coal consumption for power generation when the unit uses steam extraction as a low-pressure (low temperature) heat recovery source. The calculation of coal consumption for power generation when the unit uses low-pressure (warm) economizer as a low-pressure (low-temperature) heat source, the heat source is not recovered. At the same time, the coal consumption of power generation was compared, and finally the reduction of the heat rate of the turbine was discussed as a decrease in coal consumption.
Analysis and Treatment of Abnormal Vibration of Steam Feed Pump Towards 660MW Steam Turbine
Authors: Li Wanjun , Li Xiaoxia , Niu Qingliang , Dong Yang , Zhang Deke , Huang Tianqi
Published: August 2019

The driving end of B steam feed pump vibrates greatly when steam turbine is in normal operation. Through fault diagnosis and analysis, reasons for vibration were checked and solution found. It mainly caused by mass imbalance of feed pump rotor. A kind of solution has been proposed, and potential equipment safety hazard were eliminated successfully.
Electrospinning Sn@C nanofibers for high-performance flexible lithium ion battery anodes
Authors: Li Jing , Zou Peichao , Wang Ronghe , Yang Cheng
Published: August 2019

Lithium ion batteries are considered as one of the most important energy storage devices in the field of portable electronics and electric vehicles. However, exploring novel and high-performance electrode materials are still urgently needed, as the state-of-the-art lithium ion batteries cannot meet the ever-increasing demand for high energy/power densities. Metal tin and its oxides are promising lithium ion battery anodes, but suffering from drastic volume change and crack issues during lithium intercalation/deintercalation cycling. Here we report a feasible technology to fabricate flexible and free-standing Sn@C nanofiber membrane via electrospinning method, consisting of one dimensional carbon matrix with Sn nanoparticles confined inside. Owing to the superior electron/ion transfer ability and confinement effect from the carbon coating, the as-obtained Sn@ C electrode exhibits a capacity of 668 mA h g−1at 1 A g−1even after 350 cycles and a reversible capacity of 263 mA h g−1can be achieved at an ultrahigh current density of 10 A g−1. In all, this work provides a promising anode for practical application on lithium ion batteries.
Discussion on the reformation plan of full-section sampling device and precision ammonia injection control technology for denitration system of a 300MW unit
Authors: Xue Fangming , Su Jingcheng , Sun Yiqing , Liu Xiuru
Published: August 2019

Since the denitration efficiency adjustment method is extremely limited during the operation of the unit, the internal flow field of the denitration reactor is not clear, the denitration efficiency of different catalyst modules cannot be monitored, the ammonia spray is blind, and the ammonia injection amount is difficult to control. Especially under the condition of ultra-low load, in order to ensure that NOX meets the requirements of ultra-low emission, it is necessary to increase the amount of ammonia spray, resulting in large ammonia escape and high risk of air pre-blocking. For this problem, the full-section sampling device for denitration reactor and The optimization and optimization scheme of precision ammonia injection control technology is discussed.
Comparison and Selection of Three-Core Cable and Single-Core Cable
Authors: Liu Chunyang
Published: August 2019

The selection of three-core and single-core power cables generally follows the following rules: three-core cables are selected under the condition of 6-10 kV voltage, and single-core cables are selected when the voltage level is 66 kV or above. However, 35 kV voltage grade cable has both three cores and single core. How to choose the right one is a difficult problem for engineers and technicians. Through the analysis and comparison of 35 kV three-core cable and single-core cable, the applicable environment and conditions of each cable are defined, which can provide reference and help for the majority of electric power technicians in choosing cable in engineering practice.
Summary of gas turbine power generation technology based on solar power
Authors: Liu Can
Published: August 2019

With the increasing pressure of energy shortage and the environment pollution, it’s important to take the advantage of the renewable clean energy for newpower generation technology. Solar energy, as a kind of energy with a wide range of sources, has become a new type of clean energy with the most potential for development. This study introduces the project test and progress of solar gas turbine combined generation technology at home and abroad as well as the research status of key technologies. The key technologies of heat collection, heat storage and heat recovery are analyzed and summarized, it has been pointed out that the concentrator ratio achieved by the dish and tower is more than an order of magnitude higher than that of the linear Fresnel and slot; Thermochemical heat storage technology has the theoretical maximum energy storage density, the heat storage of chemical bonds is about 5 times of latent heat, 10 times of sensible heat, and has the advantages of stable chemical bonds, small energy loss and other advantages, energy storage in the future has more development advantages. At the same time, the future research direction of solar thermal power generation technology is prospected.
Research and Analysis of Environmental Sustainability Based on Disposal of Waste Materials in Power Engineering Projects of Power Supply Enterprises
Authors: Yang Jie , Liu Hongxia , Liang Jian , Huang Jianmin , Xia Tao , Ye Yu , Liu Xiaoshuang , Zhang Hao
Published: August 2019

In recent years, in order to meet the needs of social and economic development, to build a strong power grid, power supply enterprises have invested a large amount of funds for power grid construction and upgrading. Under such circumstances, it is of great significance to deal with the disposal of waste materials, as well as to control investment costs, increase investment returns, and ensure the disposal of waste materials and environmental sustainability of power engineering projects. This thesis systematically analyses the situation of waste materials in the social grassroots, and studies its current situation and existing problems. Finally, from the professional point of view, the sustainable development of power supply enterprises in the future, and how environmental factors are sustainable.
A Schedule Power Flow Generating Method Based on State Estimation
Authors: Huang Yupeng , Li Lixin , Wang Lei , Yang Xiaonan , Lv Yan , Zhu Jingkai
Published: August 2019

Generating schedule power flow rapidly and accurately is an important step in security checking. In consideration of poor convergency property and calculating speed of conventional methods based on power flow calculations, this paper proposes a schedule power flow generating method based on state estimation to calculate schedule power flow. Pattern recognition is used to select similar section by comparing planned data and historical power flow to take the power flow of similar section as redundant measurements of state estimation. In state estimation calculation with transmission power constraints based on maximum correntropy criterion, measurements corresponding to generation schedule, load forecasting and maintenance schedule are assigned large weights. The schedule power flow calculated by the method could satisfy planned data conditions and transmission power constraints. Cases of IEEE 9-bus system and a practical power grid vertify the effectiveness and calculating accuracy of the method.
Forecast of China’s Power Generation Demand Trend Based on Scenario Prediction Method
Authors: Gao Chunjiao
Published: August 2019

This paper mainly studies the application of scenario prediction method in the forecasting of China’s generating capacity, and conducts an empirical analysis with data of China’s generating capacity from 1994 to 2017. Firstly, use the regression analysis method to fit sequence data. Taking the relationship between generating capacity and GDP into account, a China’s prediction model of generating capacity can be established. Then, consider in two different scenarios and get the predicted value of GDP model in different scenarios. At last, apply the regression model to the predicted trend of China’s generating capacity in 2018. Finally, a comparison with the real value of generating capacity in 2018 shows that the prediction error is within a controllable range, and it indicates that the scenario prediction method is of certain practical significance in predicting this macroeconomic phenomenon.
An Experimental Test To the High-Low-Voltage-Coupler Which Is Used In the Two-Sources-Driven Underwater Spark Acoustic Source
Authors: Wang Yibo , Zhang Jinju , Peng Fang
Published: August 2019

In this paper, a new type of two-sources-driven underwater spark acoustic source (TSD-USAS), is suggested. Then, the main mechanism and design principle of the high-low-voltage-coupler, which is the key part of TSD-USAS, is discussed. Finally, an experimental measurement to the backward voltage-penetration of the high-low-voltage-coupler, is implemented (at conditions of the HV capacitor: C
H = 1 μF, U
0 = 15 kV). The experimental results show that, when the HV discharge of the right-hand-side part (traditional USAS) leads to a non-breakdown, no apparent backward voltage-penetration will appear at the low voltage input terminal of the high-low-voltage-coupler; when leads to a breakdown, a backward voltage-penetration (peak value of +6200 V, pulse width of 17 μs) will arise.
Research on Cyclic Time Domain Extrapolation of Diesel Engine Crankshaft Load Spectrum Based on SVR Model
Authors: Xu Jinhao , Luo Qingguo , Jing Qi , Liu Xin , Lu Jun
Published: August 2019

The load spectrum is primarily used to provide a dynamic raw input of a basic load change to the component for simulation calculations or fatigue tests of fatigue life. In the load spectrum compilation of engine crankshaft, in order to preserve the influence of load sequence effect on fatigue damage during extrapolation and improve the accuracy of time domain extrapolation, this paper proposes a cyclic time domain extrapolation method based on SVR model. The research results show that the machine learning model has good learning ability and generalization ability, and the time domain extrapolation method can better realize the expansion of the measured samples of the crankshaft.
Effects of Coke Charging Pattern on Burden Distribution and Normal Force Distribution in COREX Melter Gasifier
Authors: Han Lihao , Li Yuehua , Liu Yanxia , Huang Weiqing , Qi Suci , Guan Xin , Yuan Jianlu
Published: August 2019

Based on the principle of discrete element method (DEM), a 2D slot model of COREX Melter Gasifier (MG) being used to study the burden movement under different coke charging patterns has been established. Two kinds of coke charging patterns were introduced to be used to analyze the burden movement in MG. The burden distribution and normal force distribution were analyzed by using the proposed model at a microscopic level. The results show that the burden movement under different coke charging patterns presents different burden movement phenomenon.
A Review of Studies on Temperature Field Changes of Solid Rocket Engines under Different Environments
Authors: Li Jian , Xu Zeliang , Ai Chun’an , Wang Xueren
Published: August 2019

At home and abroad this paper summarizes the present stage of solid missile motor and the loading of the temperature field of research, the analysis of environment includes variable temperature load, surface vessel, warehouse storage for a long time, cooling solidification, by special heat load, etc., the results verify the reliability of the principle, put forward some new model and algorithm formula, and provide certain guiding significance to the reality.
Near infrared light excited sensors NaYbF4@ NaYF4
Authors: Huang Yanjie , Zhou Jinyan , Chen Zhanlin , Ke Can , Li Xiaojing , Huang Zhenyu , Lin Keng , Wang Yuan , Guan Yan
Published: August 2019

The luminescence and temperature response characteristics of NaYF4 containing 15% NaYBF4 were investigated. NaYbF4@ NaYF4 has good thermal stability and excellent response characteristics in the temperature in the range from 300 to 500 K, which significantly increases the upper limit of temperature detection of ytterbium temperature sensor. A self-calibration relationship between the reciprocal of temperature and the natural logarithm ratio of luminescent intensity has been discovered. Compared with the values of ln(I
1048/I
967) or ln (I
947/I
967) in Yb3+ emission spectra, the relationship between ln (I
990/I
967) and 1/T is not linear, but exponential attenuation relationship with better temperature resolution near 400 K. Oxygen has no influence on these relations because of the ordered and dense crystal structure, which leading to the separation of Yb3+ and oxygen.
Study on Interaction between Aluminum Hydroxide and Vinyltriethoxy Silane by Gas Chromatography-Mass Spectrometry
Authors: Bi Weina , Sun Jujie , Yu Guangshui , Goegelein Christoph , Hoch Martin , Klaassen Johannes , Kirchhoff Joerg , Zhao Shugao
Published: August 2019

The main aim of this work is to investigate the volatile products and their concentrations from reaction of aluminum hydroxide (ATH) and vinyltriethoxysilane (VTES) decane. The upper solution of the reactants was abstracted and charred by gas chromatography-mass spectrometry (GC-MS), and the interactions between ATH and VTES can be proved by the GC-MS product. In this result, the possilble mechanism of VTES and ATH was proposed. Surface water on aluminum hydroxide (ATH) was proved to contribute to the hydrolysis of VTES.
Indirect Electrochemical Reduction of Indigo with Metal complex system of Fe(II)-DGS-Abal B
Authors: Wang Kangkang , Li Xiaoyan , Yao Jiming
Published: August 2019

The indirect electrochemical reduction dyeing of cotton fabric with indigo are carried out in this work using the synergistic complexation system of Fe(II)-DGS-Abal B. The influences of concentration of FeSO4•7H2O, C6H11O7Na, Abal B and NaOH on dyeing performances are discussed. The concentration of NaOH is found to be the main influence factors and the rate of dye reduction (Re) could be achieved to 90.88% in the optimized conditions. Compared to the traditional dyeing with Na2S2O4, K/S value of the electrochemical dyeing of cotton fabric is increased by 6.14%, and the color fastness is basically the same as the traditional dyeing process.
Remediation effect of biochar-plant on heavy metal contaminated soil in mining area
Authors: Xu Yan , Li Juan , Hua Dongwen , Guo Zhen
Published: August 2019

Pot experiment was carried out to artificially add different concentrations (0%, 5%, 10%) of swine biochar and fruit biochar in heavy metal contaminated soil in the farmland of the mining area to study the repairing effect on heavy metal contaminated soil. The results showed that the total Cu of the tested soil before planting was 166.51 mg/kg, the average Cd was 1.31 mg/kg, the average Pb was 757.78 mg/kg, and the average Hg was 8.43 mg/kg, which was a mixed contaminated soil of mercury, lead, cadmium and copper. The contents of Hg and Pb of the tested soils decreased after planting 4 plants, and Cd content decreased in addition to the CK group. The Cu content in the Z10 group decreased, but Hg content still exceeded the soil risk control value, the Cu, Cd and Pb contents exceeded the risk screening value, and the potential risk was reduced but still existed. Compared with CK treatment, the two biochars have better remediation effects on the 4 heavy metals in the tested soil, and the swine biohar was better than the fruit biochar. With the increase of the concentration of the two biochars, the repair effect was better. In the combined pollution soil, the overall remediation effect of biochar-plant combined restoration on these four heavy metals was Hg > Pb > Cd > Cu, and Z10-pakchoi had the best repair effect on Hg, Pb and Cu in the tested soil. Z10-spinach had the best effect on the repair of Cd.
Effects of Light and Phytohormone Treatments on the Expression of ζ-Carotene Desaturase Gene (BoaZDS) in Chinese Kale
Authors: Zheng Hao , Jian Yue , Liang Sha , Chang Jiaqi , Jiang Min , Zhang Fen , Sun Bo
Published: August 2019

Chinese kale variety ‘Sijicutiao’ was used as the plant material. Chinese kale seedlings were treated by different light qualities, light intensities and phytohormones, and the expression of ζ-carotene desaturase gene (BoaZDS) was analyzed. The results showed that red & blue light significantly promoted the expression of BoaZDS gene, peaked at 6 h and the expression level was 2.33 folds than that of the control. Blue light also induced the expression of BoaZDS gene in the late stage (72 h). Strong light had a significant effect on BoaZDS gene expression, peaked at 24 h and the expression level was 5.64 folds than that of the control, whereas weak light inhibited the BoaZDS gene expression. Abscisic acid and salicylic acid induced the expression of BoaZDS gene, and expression patterns were bimodal. Both methyl jasmonate and gibberellin acid inhibited the expression of the BoaZDS gene. The results provided a basis for further study on the regulation mechanism of BoaZDS gene.
Research on Corrosion Detection and Assessment Method for Hydraulic Concrete Structures
Authors: Chen Jie , Chen Yang
Published: August 2019

In our country, hydraulic concrete structure construction technology is widely used. However, with the increase of time and the erosion of the environment, there will be aging and safety risks in this structure. This puts forward higher requirements for detection technology and safety assessment technology of hydraulic concrete structures. Therefore, in order to promote the innovation and progress of this engineering technology, we should carry out targeted strategy analysis based on the development and application status of related technologies and engineering practice. We should also actively introduce advanced detection technology and equipment to maintain the development of China’s hydraulic concrete structure construction technology. This is conducive to the vigorous and healthy development of China’s water conservancy projects.
Application of Eichhornia crassipes on the purification of contaminated water
Authors: Guo Weijie , Li Qingyun , Zhao Weihua , Zhao Liangyuan
Published: August 2019

The explosive growth of water hyacinth had been a serious threat to the biodiversity of local ecosystems and the production, life and health of residents. It has become a malignantly invasive alien species in many countries and regions of the world. In this paper, biological characteristics and distribution, application in water pollution control, and application risk and control strategy in water pollution control of water hyacinth were summarized and elaborated.
Effect of Y2O3 Nanoparticles on Growth of Maize Seedlings
Authors: Gong Chenchen , Wang Linghao , Li Xiaolu , Wang Hongsen , Jiang Yuxin , Wang Wenxing
Published: August 2019

With the increasing application of rare earth nanoparticles (RENPs), the growing chances of these NPs being released into the environment highlight the importance of understanding the influence of RENPs on plant growth. In this study, we assessed the effect of Y2O3 NPs on the growth of maize seedlings. Germinated buds of maize were planted in pot-cultured farmland soil amended with different concentrations (0–500 mg/kg) of Y2O3 NPs for 25 days. Y2O3 NPs could inhibit root growth. Compared with control treatment, root biomass significantly decreased at high concentrations ( ≥ 100 mg/kg), while root elongation was significantly inhibited at low concentrations ( ≥ 10 mg/kg). However, the growth and photosynthesis of aboveground shoots were not affected by all Y2O3 NPs treatments. This study will help us better understand the phytotoxicity of Y2O3 NPs.
Effect of Decabromodiphenyl Ether on Free Radicals in the Degradation of P-nitrophenol under Ultraviolet Light
Authors: Li Yueting
Published: August 2019

Polybrominated diphenyl ether as an additive bromine flame retardant is widely used in industrial products, due to its strong fat-soluble and biological accumulating, it is a new type of ecological risk of environmental organic pollutants, and thus, resulted in more and more serious and widespread pollution. In view of the increasingly severe environmental conditions, this paper selected decabromodiphenyl ether(Deca-BDE) as the research object, based on the limited research data, taking its flame retardant mechanism as the starting point, and preliminarily discussed how the photodegradation of organic pollutants when Deca-BDE coexisted with other organic pollutants was affected by Deca-BDE. The experimental results show that, when ten Deca-BDE coexist with organic pollutants, the signal strength of organic pollutants photodegradation produce free radicals decreases, the preliminary judgment is Deca-BDE have a shielding effect on free radical signal, or Deca-BDE curbed the photodegradation of organic pollutants, lead to degradation of intermediate reduction, to detect the radical signal intensity weaken. Of course, there are still many areas for improvement and improvement in this study, which need to be proved by further research methods. This study is expected to provide guidance for the scientific classification and treatment of organic pollutants.
Effects of Zinc and Copper Stress on Antioxidant System of Olive Leaves
Authors: Liang Jian , Yang Weifei
Published: August 2019

The purpose of this experiment is to understand the effects of different concentrations of Cu (Cu) and Zn (Zn) heavy metals on the antioxidant index of olive oil and provide a theoretical basis for phytore mediation of heavy metal pollution. In this experiment, the annual olive seedlings were studied. In the experiment, the heavy metal solution was used to simulate the soil heavy metal pollution environment. The concentration of heavy metals Cu and Zn was studied. The active leaves of the olive oil were malondialdehyde (MDA) and soluble. Effects of physiological factors such as protein, superoxide dismutase (SOD), POD, and CAT. In this experiment, the pot experiment of stress oil olive seedlings was studied by setting different concentration gradients of heavy metal iron and Zn. The authors analyzed the antioxidant enzyme system and membrane lipid peroxidation of heavy metal Zn and Cu in olive seedlings. The link between changes in biochemical indicators. Finally, the experimental results showed that the activity values of CAT and POD in the leaves of olive oil showed a trend of decreasing first and then increasing within the experimental concentration range. Among them, the activity of SOD in the leaves was firstly increased, and then the concentration of the enzyme was increased first. The increase of the AMD dropped sharply; the content of MDA in the experiment was not changed under the low concentration treatment, but the high concentration of Zn and Cu in the experiment caused a sharp increase in the content of malondialdehyde; soluble protein content Continue to rise.
The vegetable oil in the production of polymers and plastics; an effort of creating green products
Authors: Elvistia Firdaus Flora
Published: August 2019

Manufacturing of polymers and plastics derived from petroleum feedstocks are called synthetic products. The existing of synthetics throughout the plastic series of process is detrimental to the environment. Polyurethane is classified as a family of plastics. Vegetable oil is the potential of producing polyurethane in the presence of unsaturated chain in triglyceride, is being considered intermediates of polymers product. An effort of replacing petroleum with green resources is urgently required of its cheap price, and abundantly available. The vegetable now is not just a cooking oil but turned into various polymeric products. This research is aimed to identify the vegetable oil content in polyurethane’s formula with comprehensive low production cost and potentially resulted in the best polyurethane product properties.
Institutional capacity building for local disaster prevention board of West Pasaman Regency
Authors: Khairul K , Purnaweni H , Suwitri S
Published: August 2019

This study aimed at analysing institutional capacity building of BPBD of West Pasaman in local-based disaster prevention and management. The study applied a qualitative methodology with phenomenological approach. The disaster prevention and management institutional capacity building was performed by a coordination. The coordination did not restrict itself with formal institutions, but also local community institutions and organisations, such as Kogami, HSNI, and three local community elements (tungku tigo sajarangan). This study found that socialisation in disaster mitigation and prevention was still inadequate because of lacking local community involvement. Furthermore, it also found lacking clarity of authority and responsiblity between central, provincial, and regency governments. West Pasaman Regency needed support from the provincial government in terms of post-disaster equipments. This study had a theoretical contribution of extending the knowledge in public management and practical contribution of helping the local government implement the institutional capacity building of BPBD in the disaster prevention and management
Community-based solid waste management planning in the Administrative Village of Surau Gadang, Padang City
Authors: Maharani Anggrieka , Dewilda Yommi , Darnas Yeggi , Dewata Indang
Published: August 2019

The community-based solid waste management system in Administrative Village of Surau Gadang is planned based on SNI-20-3242-2008, with a design period of 8 years (2011-2018). The service level is planned to reach 100%. The total solid waste generation is 64.18 m3/d (organic 60.81 m3/d, inorganic is 0.75 m3/d, while other waste is 2.61 m3/d). The sorting process is according to the type of waste. Residential waste collection uses motorized trash tricycles to TPST (integrated waste treatment plant) and non-residential uses pickup cars to TPS (temporary disposal site). Processing carried out at the source is composting the Takakura method, while in TPST is composting the Bokhasi method, sorting other waste for sale, recycling and making handicrafts. The residue from the remaining processing which was disposed to TPS was 18.43%. The institution formed is a representative of all RW (citizens association). Regulation based on Law No.18 of 2008. The investment in making TPST and its supplementary facilities for eight years is Rp.1,322,000,000, with operational and maintenance costs of Rp.26,678,067/month. The profit obtained is Rp.102,117,284 / month. Community participation can be seen from involvement in technical and non-technical aspects.
Study of mercury concentration in plants in Traditional Buladu Gold Mining
Authors: Mahmud M , Lihawa F , Saleh Y , Desei F , Banteng B
Published: August 2019

The objective of the study was to examine the levels of mercury concentrations in plants due to the traditional gold mining of Buladu, Sumalata District, Gorontalo Regency. Buladu gold mining was located in Sumalata District, North Gorontalo Regency, Gorontalo Province. Plant samples were taken in 3 locations, namely plants living along the Hulawa River, living near to the tailings and those in residential areas. The number of plants that became the samples along the Hulawa River were 13 samples, 5 samples in the tailings, and 16 samples in residential areas. The total number of plants were as many as 34 samples. The samplings were taken from the roots and leaves so that there were a total of 68 samples. Plant analysis was carried out using mercury analyzer at UGM Integrated Research and Testing Laboratory. The quality standard used as a reference for plants employed the Decree of the Director General of National Agency of Drug and Food Control No: 03725 / B / SK / VII / 89, where mercury levels could not exceed 0.5 mg / kg. Data analysis used tables and graphs and was subsequently interpreted. The results showed that the concentration of mercury in the leaves of plants living along the Hulawa River ranged from 0.00142 mg / kg to 0.41617 mg / l and that in the root ranged from <0.00014 - 14.890 mg / kg. Mercury concentrations in plants living around the tailings in leaves ranged between <0.00014 - 1.30822 and at roots ranging from 0.01058 - 12.59366. In residential areas, the concentration of mercury in leaves ranged from <0.00014-1.44368 mg / kg and in the root ranged from <0.00014-1.94505. Based on these results, the concentration of mercury in plants along the river, around the tailings and in the people’s resident area tended to be above the quality standards set by the Decree of the Director General of National Agency of Drug and Food Control No: 03725 / B / SK / VII / 89.
Density, coverage and biomass of seagrass ecosystem in the Lobam Island, Bintan Regency - Indonesia
Authors: Prarikeslan Widya , Hermon Dedi , Suasti Yurni , Putra Aprizon
Published: August 2019

Seagrass ecosystem is a sea plant that can store carbon in the form of biomass and in sediments known as blue carbon. This research conducted in around coastal waters of Lobam island, Seri Kuala Lobam sub-district, Bintan regency that has seagrass community type Thalassia hemprichii and Enhalus acoroides which has an important role as a carbon sink. This research aims to determine differences of density, coverage and differences in biomass based on a seagrass tissue at the Above ground (leaf Abg.) and Below ground (rhizoma and root Blg.) of each station and the relationship between the density towards seagrass biomass. The research results show that the seagrass density in station 2 was higher than in station 1. While the difference in the seagrass biomass there is in the section of Abg (leaf) and Blg (rhizoma and root) in station 1 and conversely there is no significant difference in station 2.
“One”
Authors: Bambang Susetyarto Martinus
Published: August 2019

The robustness of the One building as the main building of Sa’o traditional house in Ngada Regency, Flores, has been proven to be reliable. The experience and testimony of indigenous people proves that when there was a shock in the area due to the earthquake and tsunami, the human victims who lived in traditional houses were the least number. The most severe damage occurred when Sa’o was shaken violently, until the One building fell to the ground. The One building is located on a stage floor made of wooden beams with split bamboo floor coverings. The stage floor is supported by wooden pillars or megalithic stone pillars. Floor and ceiling construction are tightly integrated with wooden columns and plank walls. The construction of the One building use wooden pegs, interlocking board walls, without nails or screw bolts, and tied thatched roof coverings. Therefore, inspired by the One building is the Ngadha architectural identity I designed the “One” model as a space box rescue from the earthquake and tsunami disaster. The goal is that when the disaster occurs, each family could save themselves to the “One” box rescue, close tightly for several minutes to avoid accidents and security threats from more severe natural disasters. The “One” prototype model must be tested for its strength, patented, calculated the technical feasibility, collaborated with industry, the government, and the local government.
Strategy of ecotourism development in Pariaman City
Authors: Arlym Lucyanel , Hermon Dedi
Published: August 2019

This study is to select strategies for the development of ecotourism in Pariaman City. The process of this research starts with identifying and analyzing strategic values, internal and external environments and supporting and inhibiting factors. The next process is to determine strategic issues using SWOT Analysis techniques, SPACE Matrix, QSPM Matrix, Alternative Strategy Formulation, Strategy Selection, Strategy Selection Implications. This research is descriptive qualitative. The main goal of this research is solving the problems faced/at the study location. The approach for the study is a qualitative descriptive approach. Data collection techniques used were observation, interviews and literature study. Interview activities carried out on a number of speakers who were considered competent in one matter. Library Study is a method used to trace historical data or review literature and report reports relating to the research title. The strategy in accordance with the conditions for the development of ecotourism in the Pariaman City are: 1) Intensive Strategy, a strategy with intensive efforts if the competitive position of Pariaman City with existing tourist destinations and tourism services wants to improve; 2) Diversification Strategy: Diversification strategy is Pariaman City government strategy with the adds tourist destinations and new tourism services to help increase regional income.
The influence of green open space and tourism-conscious work culture on the happiness of the people in Solok Regency
Authors: Yulistia Rahayu Vivi , Frinaldi Aldri , Khaidir Afriva
Published: August 2019

In an effort to improve the happiness of the community, there is a need for green open space (RTH) and a tourism-conscious work culture. But in reality RTH is not a development priority in Solok Regency. This is seen by not being maintained and not well managed by the green open space. In maintaining green open space, it is necessary to have a tourism-conscious work culture from all relevant parties, but not all parties understand the importance of the tourism-conscious work culture. This study uses quantitative methods with associative research types that aim to determine the effect or relationship between two or more variables. The population in this study is the people of Solok Regency. Determination of the number of samples using the Slovin formula with a total of 400 people, and sampling techniques using Cluster Sampling and Incidental sampling techniques. The instrument used is a questionnaire. Research hypothesis testing uses regression analysis techniques with T Test (Partial) and F Test (Simultaneous). The results showed that: 1) Green Open Space had an effect on community happiness by 21.4%, 2) The influence of Tourism Awareness Work Culture on community happiness was 28.3%, and 3) the influence of green open space and shared tourism conscious culture - same effect on community happiness by 25.0%. 4) Green open space is in a very high category with the level of achievement of respondents at 81.0%. 5) Tourism conscious work culture is in the very high category with the level of achievement of respondents at 81.4%. 6) The happiness of the community is in the high category with the level of achievement of respondents at 77.4%.
Environmental education and disaster mitigation through language learning
Authors: Ramadhan S , Sukma E , Indriyani V
Published: August 2019

This study aims to determine the knowledge of the environment, attitudes towards the environment, and skills in designing learning that contains the environment of prospective language teachers. In addition to the environment, this research also links environmental learning with disaster mitigation. This study uses a survey method. The instrument used was a questionnaire in the form of a question sheet consisting of twelve questions relating to the attitudes and knowledge of prospective teacher students regarding environmentally charged learning and disaster mitigation. The results of the study indicate that students still need to improve knowledge about the environment and disaster mitigation to be able to design language learning with environmental education and disaster mitigation. When becoming a teacher, scholar have been able to integrate environmental education and disaster mitigation to provide students with an understanding of it and foster an attitude of environmental awareness and care for the environment.
Knowledge system of religious communities in watershed conservation education; case studies in Islamic Boarding Schools in East Java and West Nusa Tenggara, Indonesia
Authors: Sukarsono Sukarsono , Utami Ulfah
Published: August 2019

Knowledge of conservation education at boarding school residents grew rapidly since 1990. The residents have variety sources of knowledge and insight which affecting the owner’s knowledge. Boarding schools citizen’s knowledge becomes a key factor to create the basic, instrumental values and the goal values. The successfulness of knowledge transfer in order to build the values, attitudes and behavior are developing by using multiple methods of environmental education, namely: lectures, training, provision of examples and discussions. The resident’s conservation knowledge lodges an interrelated system between inputs, processes, outputs and knowledge outcomes. Knowledge system that is built up is more towards emphasizing on the educational component due to the boarding school’s background that has role in developing the citizens through education. Knowledge system that is built has a typical religious communities, but in accordance with the conservation objectives. Purpose of conservation education in general is to find happiness in this world and in the Hereafter a continuous basis. The purpose of conservation education is superior which include objectives to gain happiness in this world and in the Hereafter with ongoing basis comparing to the general conservation.