bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on the Path of Transformation and Development of Agricultural Economy under the New Normal
Authors: Qian Ye
Published: November 2020

Since the reform and opening up, China’s social economy has achieved rapid development, the economic level has been significantly improved, but also, because in the process of development too much emphasis on the speed of development, ignoring the quality of improvement, so there are a lot of uncertainty in the economic development, seriously affect the economic development. For example, the supply of resources is becoming increasingly tight, the market is becoming more and more binding, and the gap between the rich and the poor is becoming larger and larger, all of which have a certain impact on China’s economic development. The rural area occupies the proportion very big in our country, our country is the biggest agriculture country, the rural area economy has the important function to our country economy. As a result of the above factors, rural economic development is faced with severe challenges; we must strengthen the attention to rural infrastructure construction, in order to promote economic development.
Regional Differences in the Impact of Internet on Agricultural Economic Growth
Authors: Tang Guanghai , Tang Wenli , Zeng Hui , Jin Hongpin
Published: November 2020

In the context of developing the “Internet Plus Agriculture” initiative, this paper investigates the impact of the Internet on China’s agricultural economic growth and its regional differences. Through recourse to a panel data model, the paper analyzes regional differences in Internet resources and their impact on the agricultural economic growth in 31 provinces, municipalities and autonomous regions in China. The paper concludes that the impact of the Internet on eastern China is significantly greater than that on the central and western regions. The central and western regions can tap the potential of applying Internet resources in agricultural production by adopting such measures as promoting feature agriculture, strengthening agricultural e-commerce, building online brands, and promoting official websites.
Effects of Waterlogging On Maize Seedling Growth during Seed Germination
Authors: Xiong Rui , Sang Liran , Liu Rui , Cheng Ru , Li Peishan , Huang Liangjun , Cao Gaoyi
Published: November 2020

In order to understand the resistance of maize seed germination characteristics, to varying degrees of early germination of maize seeds flooding stress, explore the seed germination of maize seedling vigor and growth period of flooding stress, help to understand inverse resistant mechanism of corn seed germination period, to help agricultural production results show that the seeds of waterflooded development, continue to develop at a young age, compared with control, corn seedling variety of enzyme activity and soluble sugar and soluble protein in different degree of change Compared with the control group, the chlorophyll content of Lu yu 36 maize seedlings decreased, while the chlorophyll content of Zheng Dang 958 showed a trend of first decreasing and then increasing. Peroxidase (POD), malondialdehyde (MDA) and soluble sugar all showed an increasing trend. These results provided a basis for better understanding of the waterlogging stress tolerance of maize seeds during germination.
Stylistic Features on Agriculture Reports of VOA Learning English
Authors: Li Jing
Published: November 2020

This paper, based on modern stylistic theories, aims at studying the stylistic features of agriculture reports abstracted from the official website-https://www.chinavoa.com/ OVA learning English. With combination of the quantitative and qualitative analytical research methodologies, the levels of lexicon and syntax or the texts are studied respectively. The analysis presents words which are relevant to agriculture and different numbers with the units of measurement are frequently presented in the reports. While on the grammatical level, present tense and active voice are two typical usages. Moreover, passive voice, perfect aspect, and modality are also distributed. In the application of modality, the words with the meaning of permission, possibility, ability is frequently adopted. The results of this study pave the way to English learners and agriculture researchers’ writing reports.
Day-ahead Scheduling of Park Integrated Energy System Considering the Demand Response
Authors: Zhang Jing , Zhang Peng , Liu Chang , Dai Kang , Lin Jingyi , Tong Chong
Published: November 2020

The Park Integrated Energy System (PIES) is essential to increase the economic energy supply for the coupling of multiple energy sources. Thus, this paper firstly analyzed the integrated demand response function of park energy users, and then constructed the optimal scheduling model of PIES aiming at the economy of PIES. Finally, an improved non-dominated scheduling genetic algorithm with elite strategy (NSGA-II) was proposed to solve the optimization problem. The results show that the model can effectively solve the optimal scheduling problem of PIES, and the integrated demand response can effectively improve the economic figure of PIES.
Photoelectric Detection System for Large Board Parts
Authors: Yu Bo , Li Yan , Chen Zhi-hong
Published: November 2020

In-depth analysis of the current shortcomings in the detection of large board parts, a photoelectric detection method based on image processing technology is proposed, the overall structure of the detection system is designed in detail, the mechanical transmission system and the photoelectric detection system are specifically designed, and at the same time, the analysis the implementation steps of image processing for large-scale class parts using photoelectric detection technology are given. The specific implementation process is given, including: image acquisition, image stitching and image edge extraction, and finally the photoelectric online detection of large-scale board parts is completed.
Short-term Photovoltaic Power Forecast Based on Greenhouse Energy Supply Requirements
Authors: Li Jianjun , Du Songhuai
Published: November 2020

In order to solve the problem of “disposal of light” in distributed photovoltaic power plants,this paper proposed that the energy supply of photovoltaic power plants could achieve local consumption in agricultural greenhouses, and predict the photovoltaic power generation in advance according to the load demand of greenhouses. The historical power data and meteorological data of the input variables were normalized, and the PV power prediction was performed at a time interval of 1 h for a time comparison. The prediction method based on the iterative improved BP neural network model was proposed. The prediction results showed that the prediction error was not More than 2%,could meet the energy supply stability requirements of greenhouse loads.
Plant layout and health and safety analysis of thermochemical conversion for rice straw-based second-generation bioethanol production in West Java
Authors: Ramadhan M Y A , Harahap A F P , Hermansyah H , Sahlan M , Srinophakun P , Gozan M
Published: November 2020

Rice straw is one of the abundant lignocellulosic waste materials that potentially produce 205 billion liters bioethanol per year in Indonesia. This study examines the health, safety, and environmental aspects of a Bioethanol Production Plant. The main processes involved in the plant are pretreatment, gasification, water-gas shift reaction, carbon dioxide removal, alcohol synthesis, and purification. The plant will be located in Indramayu, West Java, Indonesia, with a total area of 3 hectares. The plant layout covers inside and outside the battery limit area, including but not limited to waste treatment area, office, QC Lab, and other supporting facilities. The HSE Assessment includes Hazard Identification, Hazard and Operability Study, Operational Details, Emergency Action Plant, and Waste Management. The paper discusses the 3D plant layout concerning HSE aspects. The most dangerous material in this plant is ethanol due to flammable risk. Hence, the most dangerous area is around the reactor to explosion risk. There are several types of equipment that need more attention due to its severe hazard effects, such as crusher, gasification reactor, char combustor, condenser, reboiler, distillation column, reflux drum, storage ethanol, also laboratory area. The plant layout is divided into several areas: production area, utility area, waste treatment area, and supporting area. The stable, liquid, and gas wastes will be treated in a waste treatment area. Measurements for reducing noise level includes performing regular maintenance and replacing parts causing the noise.
Computational study of antocyanin compounds (Cyanidin and Petunidin) supported on TiO2 for DSSC application potential
Authors: Adisyahputra  , Nurhadini  , Sari F I P , Arief I , Kurniawan M A
Published: November 2020

This research predicts electronic properties (HOMO ILUMO energy diagram, UV-Vis spectrum, and the density of the HOMO / LUMO orbital) of cyanidin and petunidin organic dye compounds supported by TiO2. This system is modelled by interacting dyestuff compounds with the simplest TiO2 units to predict the effect of these dyes so that they can be applied in cells solar dye. A dye-sensitized solar cell is one generation of solar cells that has been widely studied to date. This solar cell uses substances colour as a sensitizer and become very interesting to be developed because of this requires low production costs but is able to produce performance pretty good. In this study computational calculations are performed using Gaussian 09W software with TD-DFT method (theory and base set B3LYP / 6-3 1G (d, p) for all atoms. The UV-Vis spectrum of cyanidin and petunidin compounds computed by computation light at wavelengths of 458.82 nm (cyanidin), 813.13 nm (cyanidin-TiO2) and 462.35 nm (petunidin), 782.83 nm (petunidin-TiO2). HOMO / LUMO energy diagram for cyanidin and cyanidin-TiO2 gives band gap of 1.9203 eV and 1.458 eV, respectively. Whereas petunidin and petunidin-TiO2 give band gap respectively of 1.9010 eV and 1.5477 eV.
Optimizing the protection coordination of DGR (Directional Ground Relay) to overcome sympathetic disturbances and reduce energy not supplied on Toboali Substation
Authors: Siregar E M , Puriza M Y , Asmar
Published: November 2020

Along with the operation of the Toboali Substation, studies needed to improve reliability. The ground disturbance that occurs in a feeder can cause a sympathetic trip in another feeder and effect the blackout of Toboali system. This is due to the choice of loop operating patterns on feeders and buses that tend to be close together. From the results of simulation and optimization of directional ground relay coordination it was found that before the improvement of energy not supplied due to sympathetic disturbances on the Toboali system was 51,261 MWh/year and after the improvement of energy not supplied became 21,170 MWh/year. Expected this optimization of protection coordination improves reliability and reduces the energy not supplied due to sympathetic disturbances that occur in Toboali substation.
Potential assessment of solar power plant: A case study of a small island in Eastern Indonesia
Authors: Aprilianti K P , Baghta N A , Aryani D R , Jufri F H , Utomo A R
Published: November 2020

Indonesia as a tropical country has high solar energy potential to generate power. Solar power plant (SPP) using Photovoltaic (PV) is suitable for power generation in a small power system, such as in several small islands in Eastern Indonesia since solar energy is easy to obtain there. The implementation of SPP for power generation needs an examination of energy yield to observe the performance ratio of SPP. Those parameters are important to study to further analyze the economic potential and feasibility of SPP development. This study estimates the performance ratio (PR) and potential energy yield of SPP in a small island in Eastern Indonesia through a self-developed program using MATLAB based Graphical User Interface (GUI). Moreover, this program also provides the levelized cost of energy (LCOE) calculation and land use optimization by readjusting the PV array configuration. According to the simulation result, the implementation of SPP in Eastern Indonesia has 85.4% and 23.54% for annual PR and capacity factor (CF) respectively. The simulation also shows that the optimum distance between PV strings produces higher annual energy yield and CF.
A reliability assessment for emergency switchgear systems improvementment of LNG plant
Authors: Wakman K , Sudiarto B
Published: November 2020

The LNG plant essential load to support the operationality is taken from the emergency system. The major challenge is to ensure the reliability level of its emergency system required. The improvement of the emergency system can result in operationality of LNG production. The calculation of component or system unavailability is the essential of the emergency system reliability evaluation. This paper presents a reliability analysis for LNG plant emergency switchgear system by comparing the existing configuration and proposed new configuration. The analysis is using the software modeling with Fault Tree Diagram. Therefore, by the concept of proposed design, it can improve the reliability of emergency system by reducing the unavailability.
Characteristics of disturbance in frequency 9-150 kHz and harmonic distortion of the on-grid rooftop photovoltaic system for resistive and inductive load
Authors: Kurniawan S A , Sudiarto B
Published: November 2020

Direct current (DC) electricity generated from photovoltaic (PV) needs to be converted into alternating current (AC) using an inverter so that it could be combined with electricity from the grid. However, the inverter could distort the AC waveform in the form of harmonics and disturbance in the frequency range of 9-150 kHz caused by its switching characteristics which could reduce power quality, disrupt the power line communication (PLC) system, or other electronic equipment connected in the same network. This study investigated the characteristics of the disturbances in the frequency range of 9-150 kHz generated by the on-grid rooftop PV system and observed the correlation with harmonic distortion. There were three types of load used in this study, i.e. pure resistive loads, pure inductive loads, and combination of resistive-inductive loads. The measurements were carried out using an oscilloscope to obtain a time-domain signal, which later processed by Matlab using FFT to see its frequency response, and power quality analyzer to see its harmonic distortion. The results show that each type of load has different relationship characteristics between disturbance and harmonic distortion.
Synthesis and characterization of chitosan - LiClO4 solid electrolyte membrán and its application in batteries
Authors: Jumnahdi M , Kurniawan W B , Mahardika R G , Widyaningrum Y
Published: November 2020

The Synthesis of chitosan - LiCLO4 solid electrolyte membrane has been carried out. The membrane is prepared by using a casting method. Chitosan 0.6 gram, LiClO4 (Sigma-Aldrich > 95%) with variations of 10% and 40% (w / w) and 10% PVA (w / w) put into the measuring cup. Furthermore, the mixture was dissolved in a 2% acetic acid solution of 30 mL (v / v) and stirred evenly at room temperature. The solution is then put into an acrylic casting plate measuring 30x5 cm and allowed to stand dry. The electrolyte membrane was then analyzed for functional groups using FTIR and conductivity using the HICRI 3532-50 Hi-Tester LCR. The FTIR results stated that the addition of lithium caused a shift in the wave number 2871 to 2920 cm-1 which showed the presence of the OCH3 group, while the highest conductivity value was 3.98 x 10-7 - 3.16 x 10-6 at a frequency of 42 Hz - 5MHz. These results provide information that the synthesized membrane can be applied as an electrolyte membrane on the batteries.
The study of geoheritage potential in the Northern Bangka Island as future geopark of Bangka Belitung Islands Province
Authors: Franto  , Mardiah  , Hidayati
Published: November 2020

The background of this study is the geological richness in Bangka Island which is geosite that has significance in science, scarcity, aesthetic, and education. Activities in Geopark are not only limited to geological, but also archeological, ecological, historical, and cultural aspects. In the activities to protect natural heritage from destruction or environmental degradation, Geopark area has become the location of the examination of the enforced protection method. Besides, Geopark is also fully open for any activity such as study and research of any science and appropriate technology. The aims of this study are: to inventory the spread of geological sites in the northern Bangka Island, to determine the sites of geological heritage that will be set as sites should be conserved. The data was taken from rock outcrop that was eventually examined using XRD, rock and mineral petrography. This research showed that from 5 locations there were 2 types of dominant rock outcrops metamorphic rock and igneous rock (granite), in addition there are also other types of rock that are quarternary, namely limestone reefs and conglomerates. Its uniqueness and can be used as a geosite location.
Mini production suction dredge for small scale tin mining in Bangka Belitung Island Indonesia
Authors: Prayitnoadi R P , Rosa F , Rodiawan  , Krishnaningsih S D
Published: November 2020

Mini Production Suction Dredge (MPSD) has been made for the people of Bangka Belitung Province Indonesia which is known as a cheap, safe and straightforward technology ship to mine tin sand from surface land under the sea level. This MPSD creates more safe production operation since the previous ships by using a traditional small boat for catching the fish. The main reason why this MPSD was created because there is no diving activity for an operator to drive the suction pipe flexibly under the sea which in some cases make the divers have problems and get injured seriously or fatality. The MPSD is a welded construction of 4 x 10 meters ship which is equipped with the suction unit, 24 HP diesel engines to drive two suction pumps, the tin separation jig and the steering winch. The basic construction of the dredge consists of 2 sides of 0.8-meter diameters x 10 metersof the steel pontoon. It operates on the sea waves which take the sand up to 15 meters deep from the mean sea level and allows no diving activity in 1 mile away from the coastline. Through its operation, the MPSD operated more stable and safer than the previous operation.
The study of natural food composition for tempuring fish (puntius gemellus) in Bangka Island
Authors: Gustomi A , Akhrianti I
Published: November 2020

Tempuring fish (Puntius gemellus)is a freshwater local fish in Bangka Island. Based on morphology and dimorphisme, tempuring fish have a decoratively potention, because it’s have a small body size and distinctive color patterns. Potention of tempuring fish as ornamental fish can increase the economic value of local fish resources at the national or international level if its development on a great scale can be done well with due regard to the biological and ecological nature. The purpose of this study is to identify the composition and types of food found in the stomach of tempuring Fish and to know the type of eating Tempuring Fish (Puntius gemellus) through food types. Sampling location had done in river at Tua Tunu, Pangkalpinang City and identification of samples had done in Laboratory of Aquatic Resources Management, Universitas Bangka Belitung. The result showed tempuring fish (Puntius gemellus) consist of phytoplankton feeding (Herbivore) with the highest prepoderancy index is Treubaria sp: 73.22%. The results of the study are expected to be a reference in the efforts of domestication of Tempuring fish in fish cultivation activities, by providing feed derived from vegetable protein. It aims to follow the habit of eating fish in nature so that in the process of fish cultivation in a controlled tub the fish can still eat and grow well.
Dam break analysis of Situ Gintung Dam collapse reconstruction
Authors: Nabilah R A , Sutjiningsih D , Anggraheni E , Murniningsih S
Published: November 2020

On March, 27th 2009 Situ Gintung dam collapsed. Situ Gintung dam failure has been analyzed based on the condition of watershed, reservoir, and embankment on March, 27 2009. Hydrological analysis and slope stability analysis are combined to analyze the major causes gintung collapse. Watershed analysis using ARC-GIS software, routing in reservoir using HEC-HMS model, and stability condition was strudied using Geo-Slope. Input data, parameters, and model assumptions are very important to get the right results. Hydrological analysis results show that rain occurred on March 26, 2009 with a rainfall intensity of 111 mm/day was only classified as rainfall with a return period of 5 years. Reservoir routing show that water level elevation on March, 27 2009 was only 70 cm above the spillway crest or 1,3 m below the embankment crest with a peak flow of 36,2 m3/s, so it didn’t cause overtopping on the embankment. Slope stability analysis results show that the factor of safety of 1,19 < 1,5 (standard), it show that there was the weakening of the dam, such as scouring, erosion, and cracks. It can be concluded that the main factor of the collapsed was caused by scouring and cracks.
Estimation of sediment yield based on correlation between potential land erosion using Universal Soil Loss Equation (USLE) and actual sediment load using Schaffernak Method in Situ Gintung Dam
Authors: Gabrielle W O N J , Sutjiningsih D , Anggraheni E , Murniningsih S
Published: November 2020

Sediment yield is eroded soil that transported from a place to a measurement point, for example in a reservoir. Sediment in the reservoir is a problem that can reduce the performance of the reservoir, so it needs to be assess regularly. One of many ways to assess is to calculate the potential of sediment that enters the reservoir. The research objective is to calculate the potential of sediment that enters the reservoir at Situ Gintung Dam using two methods, the Universal Soil Loss Equation (USLE) and Schaffernak methods. The USLE method calculate sediment that comes from land erosion of a watershed, but the potential land erosion that occurred is not necessarily create actual sediment load at the river bed so it needs to be correlated with the results of the actual sediment load. The actual sediment load can be calculated using Schaffernak method. The results of that obtain from each method will analysed to confirm the representativeness of the potential land erosion in Situ Gintung Dam. Percent of potential land erosion that transform into the sediment in the water body can be calculated by the value of Schaffernack method.
Analysis of shear strength clay using coconut shell charcoal powder as stabilization material
Authors: Sahara O , Apriyanti Y , Fahriani F
Published: November 2020

One type of soil that has weak bearing capacity is clay. One parameter that can be reviewed is the soil shear strength value in the form of cohesion value (c) and internal shear angle (φ). To increase the bearing capacity of the soil can be done using stabilization materials. In this research, coconut shell charcoal powder is used to increase the shear strength of the soil so that it does not become a waste and can be used as a stabilizing material because coconut trees are quite widely available on the island of Bangka. Variations in the addition of coconut shell charcoal powder are 5%, 10%, and 15% of the dry weight of the soil. Tests conducted in this study are sieve analysis, consistency limits, specific gravity, compaction, and direct shear test. The testing standard used is SNI. Soil classification using the USCS method. The value of shear strength of clay soil increased with the addition of the percentage of coconut shell charcoal powder from 26.844 kN/m2 for clay soil to 59.845 kN/m2 for clay soil with 15% coconut shell charcoal powder so that the coconut shell charcoal powder can be used as soil stabilization material.
Environmental Geology of Semujur Island, Bangka Belitung Archipelago Province
Authors: Irvani  , Mardiah  , Guskarnali
Published: November 2020

Semujur Island is an inhabit small island with an area around 145,000 m2. The island position is on the east side of Bangka Island with high marine potential. The study conducted using a geological survey for getting information on land, groundwater, seawater, and marine sediments. The analysis types are petrologic of soil or sediments, the geochemical analysis of dark well water, seawater, and marine sediments. The results of the study, Semujur Island is formed by sand dun of loose bioclastic material of carbonate pieces with grain-sized sand and gravel resulting from the marine organisms decomposition like reefs, mollusk, and foraminifera shells. The unconfined shallow groundwater system flows in bioclastic to be able to fulfill all populations. The composition of Pb is <0.0250 mg/l in all dark well water under the threshold. Abrasion and seawater intrusion also occur on Semujur Island.
Analysis of the influence of ring road infrastructure development on economic growth in the coastal area of Tarakan City
Authors: Bakri M D , Prihartanto E
Published: November 2020

Road infrastructure as an important access in the development of an area. The increasing number of residents around the coast of Tarakan City has made the city government contribute to the construction of a ring road on the north coast to the east coast of Tarakan City, with the hope of providing equitable development for the people. The variables used in the study were road infrastructure development and the community’s economy, with respondents from people in coastal areas using ring road access. the method used is simple regression analysis. The results of this study provide an explanation that the construction of road access has not had a positive impact on the community’s economy, this can be seen by the value obtained of 0.3%. So that it explains that the road infrastructure that has been made by the government has not been able to increase the economic income of the community. this is because what people need is transportation that can transport goods and people so that it can increase people’s income.
Analysis of energy usage in mosques in urban area with tropical climate: case study in Yogyakarta, Indonesia
Authors: Suhono  , Athaya A D , Anwari L H , Sinaga F D H , Hadaina S F , Novantri S O
Published: November 2020

The Mosque is a prayer place for Muslims, which has daily usage. For urban communities in Indonesia, mosques play an important role in social life. The Muslims carry out various kinds of activities in mosques besides praying. With its various activities, the mosque also has unique energy use characteristics when compared to other types of buildings such as houses, offices, and commercials. This paper presents an analysis of energy use in mosques in urban areas with tropical climate. Data was collected through a survey of mosques during 2018 to 2019 in Yogyakarta, Indonesia. The results show that the use of energy in mosques in urban areas in Yogyakarta on average consumes 182.2 kWh per day. The highest use is for air conditioning by 29.16%. Overall, the mosque energy consumption intensity varies from 0.16 to 4.54 kWh per square meter monthly and all of them meets criteria as very efficient buildings. In the other side, only 6 out of 15 mosques meet the national standard for lighting. In the term of green building standard, there are 9 out of 15 mosques meet the criteria in energy consumption aspect. This paper concludes that energy consumption in mosques in urban area with tropical climate is dominated by the air conditioning purposes.
Technology selection for rice straw-based second-generation bioethanol production in West Java
Authors: Gozan M
Published: November 2020

Production of bioethanol from the abundant sources of agroindustrial cellulose has the potential to reduce world dependency on fossil fuel and, at the same time, represent a potentially negative environmental impact. Cellulose makes up nearly half of all plant biomass. Therefore, cellulosic ethanol may be the most potent source of biofuel in the near future. Rice straw is one of the most abundant lignocellulose materials in Indonesia. This study examines technology selection for rice straw-based second-generation bioethanol production. Selected possible process alternatives for bioethanol production are discussed in this work. Physical, chemical, and biological pretreatments, as well as a combination of those pretreatment processes, are elaborated in this study. The process chosen is process D, biomass–gasification – synthetic catalytic process – ethanol. In this alternative, the main processes are gasification and synthetic catalytic. Overall, fluidized bed reactors have more significant potential for use with biomass conversion than fixed bed reactors or other types of gasifiers. The gasification of carbonaceous biomass occurs via three main reactions, partial oxidation, complete oxidation, and the water-gas reaction.
Adsorption removal of cyclopentanol generated from Fenton oxidation treatment industrial wastewater process with activated carbon fiber cloths
Authors: Deng Lin , Wang Qing , Zhang Jianzhu , Ma Liyuan , Pan Qian , Hu Xuemei , Chen Chen , Zhang Huiyuan
Published: November 2020

Cyclopentanol (CPL) is an oxidation by-product in the industrial wastewater treatment process with Fenton advanced oxidation technology, which can not be further degraded into CO2 and H2O by adjusting the dosage of Fenton’s reagents. The enormous CPL generated in wastewater would have a serious effect on the chemical oxidation demand (COD) in the effluent quality. The adsorption removal of CPL onto activated carbon fiber cloth (ACFC) was investigated. Based on study of adsorption isothermal, kinetics, thermodynamics, pH, ACFC dosage experiments, the adsorption removal characteristics of ACFC were determined. The results showed that the Langmuir isotherm model describes well the equilibrium process. The removal capacities of CPL on ACFC are 36.1∼63.0 mg g-1 at 303∼313 K. The adsorption behavior of CPL on ACFC is more fitted by the pseudo-second-order kinetic model. The thermodynamic analysis revealed that the adsorption reaction was an exothermic chemisorption process. The effect of pH and adsorbent dosage on CPL adsorption removal were also studied. The results presented in this work will be helpful to the removal of CPL for industrial wastewater treatment process especially that advanced oxidation technology was adopted.
Study on the relationship between ecological environment and tourism industry development in Tai’an
Authors: Zhang Dongmei , Zhao Weijun , Liu Xiaomei , Yan Tingting , Chen Shilan
Published: November 2020

As a special form of tourism, ecotourism is one of the important factors to realize the sustainable development of tourism. The relationship between ecological environment and tourism development is not very clear. Based on the development of forestry resources and using the methods of linear regression and correlation analysis, this study analyzed the development of tourism industry in Tai’an, such as forestry production, tourism reception volume, and the relationship between them. The results showed that: (1) the area of forestry resources in Tai’an was increasing at an annual rate of 37.4%; (2) during 2004-2009, the proportion of the tertiary industry in the GDP of Tai’an increased from 34.19% to 35.57%, and the tourist reception increased by 22.2% year on year; (3) there was a significant linear correlation between forestry resources and tourism development, and the functional relationship between them was y = 0.0383x - 2965.5, R2 = 0.874. The results of this study can provide scientific reference for the sustainable development of ecotourism in Tai’an.
Research on mobile intelligent mine platform based on risk control
Authors: Wu Chao , Wu Yuliang , Zhu Changsheng , Zhang Chengyuan , Song Qingjun
Published: November 2020

It is a challenge to effectively solve the “bottleneck problem” of the information management and safety evaluation of coal mine. In case of unexpected events, it is hard for miners to rapidly know the status of environment and find solutions. On the basis of the concept of mobile work, we design a mobile intelligent mining platform aiming for an early warning. That platform is a comprehensive application of the Internet of Things, mobile Internet, intelligent control theory and other technologies. It is mainly composed of four parts: underground sensor, underground subsystem, mobile intelligent mine platform and mobile terminal. An early warning combination model is proposed and described to address this issue. The fuzzy AHP is combined with neural network because of fault-tolerant ability, parallel processing ability, processing non-linear problem ability. The paper adopts the neural network model and the fuzzy AHP model to construct a coal mine safety early warning model. With modern wireless 4G network and geographic information technology, mobile terminal allows staff to know not only the specific risk level but also the status of the scene nearby. The intelligent terminal user interface provides real-time queries and handles processes coal mine production, safety and management. It achieves comprehensive monitoring and integration management both on the automation system and security system.
Influence of economic growth and energy consumption on carbon emissions in Yangtze River Economic Belt
Authors: Han Yuling , Liu Yiping
Published: November 2020

This paper investigated the influence of economic growth and energy consumption on carbon emissions by using an extended STIRPAT model with panel data in Yangtze River Economic Belt from 2000 to 2017. We applied PCA to avoid the multicollinearity of the variable. The results show that the per capita GDP, the industrial structure, the population scale, the population structure, the export scale, the investment scale, the consumption and the FDI all lead to the increase of carbon emissions. The energy intensity has an inhibitory effect on carbon emissions. The EKC hypothesis is confirmed in Yangtze River Economic Belt, but in the west part, the economic growth and carbon emissions exhibit a reversed N-shaped relationship. The three control variables which promote economic growth, respectively, the export scale has the strongest effect in promoting the carbon emissions in the whole area, the investment scale has the biggest influence in the east part, the consumption has the largest impact in the mid-west part. Finally, some suggestions are provided.
Dynamics and response mechanism to precipitation of farmland soil moisture
Authors: Yao Shuxia , Zhao Chuancheng , Wang Suyun
Published: November 2020

Soil moisture (SM) plays an important role in the eco-hydrological processes in the sandy land, and hence is a critical ecological limiting factor. We analyzed the farmland SM dynamics and its response to precipitation based on the 0∼160 cm SM and precipitation data from April 17 to September 15 in 2015, Horqin Sandy Land. The preliminary results shown that (1) During the experiment, the number of precipitation events was mainly <3.0 mm and accounting for 60.47% of the total precipitation events; And >15 mm occurred less and accounting for 4.65% of the total precipitation events, but its precipitation amount was relatively high (35.4 mm), accounting for 25.81% of the total precipitation. (2) With the increase of soil depth, SM firstly increased, then decrease, and finally increased again, and the SM of 40∼60 cm and 140∼160 cm soil layers were higher, while 0∼20 cm and 100∼120 cm were lower. (3) The SM was lower in April and September, and the seasonal variation of SM varies greatly depending on the soil depth. (4) After the different characteristic precipitation events, the SM of 0∼60 cm and 120∼160 cm continued to increase with the increase of soil depth, while the SM of 60∼120 cm varied with soil depth showed a more complicated trend.
Study on the space-time distribution and sustainable development of wetland ecotourism resources in Shandong Province
Authors: Liu Xiaomei , Wang Hui , Zhao Weijun , Yan Tingting , Liu Boying
Published: November 2020

Wetland, ocean, and forest are regarded as the world’s three major systems. Among them, wetland has always been regarded as one of the signs of sustainable development of urban ecological environment. Therefore, its ecological problems, rational development and protection have become the focus of the sustainable development of wetlands and even cities. This study took wetlands in 17 cities in Shandong Province as the research object, then collected relevant data on the area of various types of wetlands in Shandong Province in 2008 and 2013 and analyzed the changing trend of wetland area in Shandong Province in recent 5 years by using methods including multivariate statistics and GIS space analysis, and raised some ecological problems at the same time. The results showed that: 1) In terms of time, the wetland area in Shandong Province has been reducing in the past five years. Compared with 2008, the wetland area in Shandong Province decreased by 24.57% in 2013; 2) In terms of space, the wetland area in coastal areas was seriously degraded, with a reduction rate of more than 50%; 3) In terms of wetland types, natural wetlands such as lakes and rivers were decreasing year by year. They have respectively reduced by 1.02×105 hectares and 4.21×105 hectares while the artificial wetland has increased by 5.33×105 hectares, which means some natural wetlands have been converted into artificial wetlands. The most obvious was the construction of wetland parks; 4) There were a series of ecological problems in the wetlands in Shandong Province, such as blind reclamation and deterioration of the quality of water resources.
Study on influencing factors and influencing strength of urban green space relieving heat island effect—taking Beijing as an example
Authors: Jing Chao , Li Shilong , Cao Shuo , Ma Xiaoyan
Published: November 2020

With the acceleration of urbanization, the urban heat island effect has brought a significant impact on the urban environment, and the urban green space can effectively alleviate the heat island effect, but the specific influence intensity is yet to be further studied [1]. In this study, 65 urban green spaces of different sizes and different types within Fifth Ring Road of Beijing were selected through big data analysis to explore the effects of different influence factors such as area, perimeter, shape index and vegetation coverage on its internal temperature, and then the influence intensity of urban green space on heat island effect were studied and analyzed. The results show that: 1) when the green space area is 1-10 hectares, the average temperature inside the green space will decrease with the increase of the area, and the temperature will decrease by about 0.1 °C for each increase of 1 hectare; when the area is larger than 10 hectares, the average temperature inside the green space will basically not change; 2) the internal temperature of green space does not change with the perimeter and shape index of green space; 3) when the green space area is equal, the internal temperature of the green space will decrease about 0.158 °C when the vegetation coverage increases by 1% (i.e., there is a negative correlation between the green space vegetation coverage and the internal temperature).
Research on polar substance characterization and adsorption separation process of heavy oil
Authors: Fu Longfei , Wang Juan , Feng Qiangsuo , Liu Yongluo , Yan Tao , Tang Jinwei , Xie Jialin
Published: November 2020

The combustibility and fluidity is usually a major issue in heavy oil of power plant, which affects by asphaltene and insoluble matter due to the long-term storage. In this dissertation, the effects of asphaltene and insoluble matter characteristics on the heavy oil properties have been theoretically and experimentally studied using different methods. For the combustibility study, the asphaltene was precipitated and verified by X-ray diffraction energy and dispersive spectrum analysis. Also, the rotating disk electrode atomic emission spectrometry was carried out for fluidity study and then calorific value and ash content are calculated. The combustibility and fluidity of heavy oil were improved with the method of non-polar solvents and strong polar adsorption by removing asphaltene polar and insoluble substances. The experimental shows that calorific value is 9721Kcal/kg and viscosity is 14.7mm2/s.
Accuracy analysis of inverting provincial-level carbon emissions from night-time light data in China: comparison based on international carbon emission data
Authors: Yang Xu , Liu Xianzhao
Published: November 2020

It is an indisputable fact that carbon emissions lead to global warming. Finding a rapid and accurate method for estimating carbon emissions is the prerequisite for making real-time emission reduction measures. In this paper, an estimation method for quick inversion of provincial-level carbon emissions in China is proposed by using night-time light data. This method was based on the corrected night-time light image and combined with the statistical data of the built-up area to extract the total night light value (TDN) in the built-up areas of 30 provinces (Municipalities directly under the Central Government and autonomous regions were collectively referred to as provinces; Tibet, Hong Kong, Macao and Taiwan were not involved here) in Chinese mainland from 1997 to 2017. The regression equation was established by using the TDN of the built-up areas in each province from 1997 to 2014 and the provincial-level carbon emission data released by CEADs (China emission accounts and datasets) in the same period, and then the TDN values from 2015 to 2017 were used as the independent variable to estimate the carbon emission of each province according to the established regression equation. Finally, we used the entropy method and carbon emission allocation model to distribute China’s national-level carbon emission data released by the international authoritative databases to each province and compared them with the provincial-level carbon emissions estimated by the above regression equations from 2015 to 2017. The results show that: (1) There was a significant linear relationship between the established carbon emission estimation models in all provinces, with R2 values greater than 0.8 except Beijing, Hainan and Shanxi. (2) Comparing the difference between the estimated carbon emissions and the carbon emissions allocated to provinces by the database, except for Shandong, Shanxi, Inner Mongolia and Shaanxi provinces, the errors of the other provinces were relatively small, RMSE and MAE were less than 260mt, and the MAPE of most provinces were less than 50%, indicating that the estimation models have high goodness-of-fit and accuracy. (3)The provincial-level carbon emissions allocated by the four international databases from 2015 to 2017 and the carbon emissions estimated by the model were plotted separately, and it is found that the corresponding scatter points of most provinces were distributed near the 1:1 line, which once again showed that the carbon emissions inverted based on night-time light data were close to the carbon emissions allocated to the provinces by each database, especially the provincial-level carbon emissions from CEADs database. The above results demonstrate that this method can provide a faster and more accurate estimation of provincial-level carbon emissions for China.
Photocatalytic Behaviour of TiO2-geopolymer Paste under Sunlight
Authors: Zailan Siti Norsaffirah , Mahmed Norsuria , Abdullah Mohd Mustafa Al Bakri
Published: November 2020

The photocatalytic degradation of methylene blue (MB) of the geopolymer paste with addition nanoparticles titanium dioxide (TiO2) was investigated under illumination of sunlight radiation. In this work, TiO2-based geopolymer paste was prepare by dry mixing of Class F fly ash (FA) and different amount of nano-TiO2 (0, 2.5, 5.0, 10.0 & 15.0 wt%). Then, the alkali activator, which is combination of sodium hydroxide solution with sodium silicate was added to the dry mix FA-TiO2 with ratio of 2.5. All the sample was cured at room temperature and aged for 28 days. The photocatalytic behaviour of nano-TiO2 was evaluated and compared through photocatalytic testing and surface degradation testing by measuring the photodegradation of MB under sunlight rays. The experimental results revealed that the addition of nano-TiO2 to the geopolymer paste shows excellent result on photocatalytic degradation of MB after exposure to sunlight up to 150 minutes.
The Effect Of Filler Content and Chemical Modification On The Properties Of Poly(Lactic Acid)/Pandanus Amaryllifolius Biocomposite Films
Authors: Rasidi Mohd , Syahmie Mohd , Chew  , Wei Kang , Nasib Mohd , Amira
Published: November 2020

The biocomposite films of Polylactic acid (PLA) and Pandanus Amaryllifolius filler (PAF) were prepared using solvent casting method. The effect of PAF content and modification of PAF by silane coupling agent on mechanical, morphological and enzymatic biodegradation of PLA/PAF biocomposite films were determined. PAF content in PLA/PAF biocomposite films caused the tensile strength and elongation at break to decrease, meanwhile Young’s modulus of biocomposite films increased. The SEM micrographs showed poor filler-matrix interaction between PAF and PLA matrix by showing rough surface morphology. The chemical modification of PAF using 3-APE silane coupling agent improved Young’s modulus and tensile strength in biocomposite films however elongation at break has exhibited the trend of decrease. The morphological studied showed that modified PAF had better dispersion and interaction with PLA matrix by showing smoother surface morphology. The changes of functional group of unmodified and modified biocomposite films were proven by Fourier Transform Infrared study.
High Temperature Cyclic Oxidation of Ni-based 800H Superalloy at 700°C in Air
Authors: Parimin Noraziana , Hamzah Esah
Published: November 2020

The high temperature cyclic oxidation has been investigated on 800H superalloy, composed of Fe-33Ni-19Cr alloy at 700? for 150 cycles in laboratory air. Two types of samples has been used, where the Fe-33Ni-19Cr alloy has been experienced a different heat treatment temperatures, which are 1000? and 1100?, which has differ grain size. The alloy was subjected to a short oxidation period at 700? for one hours, followed by cooling for 20 minutes for each cycle. The oxide phase analysis has been analyzed using x-ray diffraction (XRD) technique. The cross sectional line scan analysis has been examined using field emission scanning electron microscope (FESEM) equipped with energy dispersive x-ray (EDX) spectrometer. The phase analysis recorded four types of structure has formed on the oxidized sample, composes of austenite phase represent the base metal, corundum oxides, spinel oxides and fluorite oxides structure. The cross sectional analysis indicate that the oxidized samples were formed a several oxide layer, mainly compose of Cr-Mn and Cr-Ti rich oxide with detection of internal oxide precipitates compose of Al-oxide and Si-oxide precipitates.