bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of indoor fine particulate matter (PM2.5) associated in Petaling Jaya LRTs
Authors: Suvennie S , Nordin S 
Published: June 2020

Abstract
This study was conducted to determine indoor PM2.5 concentration, which was measured at indoor settings in three different Light Rail Transits in Petaling Jaya. The selected locations were LRT Kelana Jaya, LRT Ara Damansara and LRT Glenmarie. This study focused on determining the indoor fine particulate matter (PM2.5) associated with samples collected from the three LRTs using Model 8532 DustTrakTM II Aerosol Monitor (DustTrak) at each LRT from 19:00 to 21:00 three times in a month from July till October 2018. Total of 33 mass concentrations were collected and 176 respondents were recorded from questionnaire given with information on health which was adapted from The American Thoracic Society, “Questionnaire ATS-DLD-C WHO (1982)”. Results were analyzed and compared with US Environmental Protection Agencies (EPA) and World Health Organization (WHO) standards and guidelines. LRT Glenmarie (37.64 µg/m3) was determined higher than US EPA (35 µg/m3) and WHO (25 µg/m3). More than 50% of the survey respondents were affected from the respiratory disease. Therefore, it is necessary to improve the ventilation in LRTs in order to provide a healthier indoor environment.
Active cool roof system for attic temperature reduction
Authors: Yew M C , Yew M K , Saw L H , Beh J H 
Published: June 2020

Abstract
The purpose of this project is to investigate the active cool roof system for the attic temperature reduction by using harvested rainwater system. A small scale metal roof model was designed and constructed to evaluate the attic temperature cooling performance. The measurements of the roof model were carried out indoor by utilizing the halogen lamp as the replacement for solar irradiation provided by sun. The surrounding ambient temperature was controlled to be around 25°C for the experimental. The rainwater harvesting system was implemented to cool down the roof top temperature that reduces the rate of heat transfer from the roof top to the attic region. The thermostat was installed with the water pump to reduce the roof top temperature efficiently. The hot water temperature of the heated roof was absorbed by the cool water and transferring into the small model of cooling tower and water collection tank. The result of the eco-friendly cool roof system has effectively reduced the attic temperature by 6.4 °C as compared to the conventional metal roof. The positive results of the integrated cool roof design have the ability to enhance the comfort of building occupants with sustainable renewable energy.
Optimization of hydrolysis and acidogenesis of food waste for production of organic acid
Authors: Zulkifli M A , Ong M Y , Nomanbhay S , Shamsuddin A H 
Published: June 2020

Abstract
The rising of human population in the world leads to the increasing number of food waste annually. To counter this problem, the food waste is suggested to be recycled into value-added product. Anaerobic digestion is one of the ways to recycle the food waste. The main product of a complete anaerobic digestion is methane (biogas). However, methane is very hard to handle since it is in gas form. Hence, this paper has drawn the attention toward the intermediate product of anaerobic digestion, the lactic acid. This paper presents the effect of 3 different variables: (a) pH values, (b) temperature and (c) amount of inoculum, on the hydrolysis and acidogenesis stages of anaerobic digestion of food waste. Besides, the optimal condition was determined. Experimental results show that the optimum, 0.0845 g/mL of lactic acid was obtained at pH value of 7, with 125 g of volatile solid food waste and 100 g of inoculum (Ragi Tapai), and was left in a pre-heated oven at 45°C for four days. This value was higher than the other previous study, and so showing promise in producing green acid from food waste that can be used as an intermediate substance for making other materials.
Aerosols characterization using satellite and ground based remote sensing during June 2013 haze episode over southern Peninsular Malaysia
Authors: Latiff Nur Atiqah Aainaa Abd , Machimura Takashi 
Published: June 2020

Abstract
Population and economic growth over the Southeast Asia region had triggered to the increasing of pollutant that been released by automotive emission, industrial activity or biomass burning. The occurrence of intense haze episodes become severe in every year degrading the surrounding air quality and reduce visibility which may cause economic loses. However, detailed study on the aerosols concentration, source and its properties remain a challenge due to the limitation of in-situ data. Therefore, this study aimed to analyse the aerosols properties over Southern Peninsular Malaysia by utilizing the satellite and ground based remote sensing. Thus, by emphasizing on 2013 intense haze episode, PM10 concentration combine with aerosols from Aerosol Robotic Network (AERONET) data and some environmental parameters, i.e. rainfall, visibility, and hotspot numbers were investigated. Southern Peninsular Malaysia experience a dry and dense condition in June 2013 with highest temperature with less rainfall were recorded. The aerosols concentration and properties through aerosol optical depth (AOD), Angstrom Exponent (AE) parameter and particle size distribut ion indicate the presence of fine aerosols during the June 2013 haze episode, which is associates with biomass burning aerosols. Meanwhile, the MODIS fire activity data represents more than 3000 hotspots were recorded over Sumatera region. HYSPLIT modelling shows the pollutant substance from biomass burning were transported to the study area on 21st of June 2013 from southwest area which mainly from the Sumatera area.
Study on Energy Consumption Structure of Guangdong Transportation Sector
Authors: Chen Hui , Yang Xi , Zhao Shasha , Wang Gang , Xie Wenli , Li Pei 
Published: June 2020

Abstract
Transportation energy is an important component of energy consumption. The research on the energy consumption structure of Guangdong Province’s transportation energy will help to predict the space for energy development, formulate energy development strategies and energy plans. At the same time, it also provides a scientific basis for China Southern Power Grid Corporation to realize the transformation of enterprise and energy. This paper uses the GCAM model, a bottom-up method, to study the trend of Guangdong’s transportation energy consumption structure by combining transportation technology, transportation mode, and transportation demand forecasting methods. It is found that the growth rate of transportation energy in Guangdong will slow down and decline after reaching the peak. Electricity consumption will become a major part of transportation energy consumption, and passenger turnover and cargo turnover will gradually increase.
Screening of Homogeneous CWAO Catalysts for Treatment of Ceramic Printing Waste-Water
Authors: Zhang Honghua , Zeng Qinglang , Wang Junfei , Shi Liang , Zhang Yongli 
Published: June 2020

Abstract
The ceramic printing and dyeing waste-water was treated by catalytic wet oxidation. The catalytic oxidation reaction was carried out under the conditions of 50 mg/L metal ion concentration, 180 °C of reaction temperature, 2.5 MPa of oxygen partial pressure and 500 rpm of stirring speed, and the time of catalytic oxidation was set at 90 min. Comparing the effect of structural auxiliaries and blank group on COD removal rate of effluent, the structural auxiliaries have no effect on effluent, that is, no catalytic effect; Comparing the blank group without adding catalyst, the copper nitrate has the highest cod removal rate of 72.5% for waste-water, so it can be used as the best homogeneous catalyst to treat waste-water. The order of catalytic effect from high to low is: Cu(NO3)2 > CuSO4 > Fe(NO3)3 > Fe2(SO4)3 > Co(NO3)2 > Cr(NO3)3 > Ni(NO3)2 > AgNO3 > Zr(NO3)4. Among the nine types of homogeneous catalysts, the most effective Cu(NO3)2•H2O catalyst treated the ceramic printing and dyeing waste-water, the COD decreased from 3775 mg/L to 1038 mg/L and the COD removal rate reached 72.5%, when the catalyst was not added under the same operating conditions. The COD removal rate of water samples was increased by 32.9%.
Design of 3D Simulation System for Natural Ignition Law in Gob Area of Multi-source and Multi-sink
Authors: Wang Qing , Li Weilong , zhang Canming 
Published: June 2020

Abstract
In order to comprehend the law of spontaneous combustion in “multi-source and multi-sink” goaf of coal mine, and to provide the basis for the prediction of early fire in goaf, the division of three zones of spontaneous combustion in goaf and the formulation of technical measures for fire prevention and extinguishing, a three-dimensional simulation system of spontaneous combustion law in goaf of “multi-source and multi-sink” coal mine is designed in this paper. The system uses energy conservation equation, Fick‘s law and mass conservation law to establish multi-source and multi-sink goaf flow field, oxygen concentration field, gas temperature field and caving coal and rock temperature field coupled mathematical model. The model is solved and programmed by using VB language mathematical model, which realizes the visual display of simulation results. The system is used to simulate the II929 mined-out area of Luling Mine, and good application results are obtained. The system has good operability and improves the calculation efficiency. It provides theoretical support for the prevention and control of spontaneous combustion in goaf of “multi-source and multi-sink” working face.
Comparative Research of Different Dimension Reduction Methods Combined with RWR Network Smoothing in Single Cell RNA-seq Data
Authors: Xiao Xuesong , Ye Pengchao , Ye Wenbin , Ji Guoli 
Published: June 2020

Abstract
Single-cell RNA sequencing (scRNA-seq) has been an important inspiration for the study of biomolecules through its reveal of cell heterogeneity. However, due to the low capture efficiency and frequent drop-out events in the single-cell sequencing process, the scRNA-seq data often has high sparsity and random missing values, which brings great difficulties to the subsequent analysis. The network propagation method based on random walk with restart (RWR) effectively fills in the missing values in the scRNA-seq data and reduces noise by referring to the prior information of gene interaction. Dimensionality reduction is also a commonly used pre-processing method for high-dimensional and sparse scRNA-seq data, which can be combined with the RWR-based data imputation to achieve noise reduction and feature extraction of scRNA-seq data. This article compares the performance of the commonly used single-cell data dimension reduction methods combined with the RWR network smoothing in different type of scRNA-seq data sets, and analyzes their applicability and stability.
Machine Learned Artificial Neural Networks Vs Linear Regression: A Case of Chinese Carbon Emissions
Authors: Sajid M J 
Published: June 2020

Abstract
China is the topmost source of world’s carbon emissions. Keeping this in view, a lot of work has focused on evaluating the relation between the Chinese carbon emissions and its drivers. However, these works mostly employ different types and extensions of the regression model to estimate the relations. The popular machine learning approaches like the artificial neural networks (ANN) are mostly overlooked in this regard. Furthermore, the studies based on the ANN and its different extensions often boast its superiority over the regression analysis. This claim has also not yet analysed for the relationship between a regions carbon emissions and their drivers. This study fills these critical research gaps. The results showed that the linear regression model with lesser ‘mean squared error’ outperformed the ANN model with linear activation code. This study can be a good starting reference for advanced future work on this much neglected research gap.
Analysis of the Main Controlling Factors of the Development Effect of a Single Well for Coalbed Methane
Authors: Zuo Yinqing , Xiao Qianhua , Wang Zhiyuan , Lu Xiuqin , Song Yang , Guo Wei , Zhang Lei 
Published: June 2020

Abstract
To determine the main controlling factors of the coalbed methane (CBM) development effect, 64 production wells were selected from the Mabidong Block as the study objective. Three aspects of the main controlling factors that affect production were analyzed: the reservoir geological conditions, the engineering construction quality and the drainage and production system. In addition, two new parameters, i.e., the resource index and the desorption index, were defined to better evaluate the influence laws of geological conditions on production. This study indicates that the resource index, the desorption index and the master fracture density are well correlated to stable gas production. Furthermore, fracturing is an effective way to improve the CBM development effect, but it must be based on the presence of adequate resources. Finally, the drainage and production intensity is strongly correlated with production, and the optimum value of drainage and production intensity for the Mabidong Block is 6∼7 m/d.
The Analysis of Green Building System Based on BIM
Authors: Ji-Xiang Liao , Tang-Ming Jiang , Xing-Ye Liu 
Published: June 2020

Abstract
The construction industry plays a decisive role in promoting social progress. With the rapid development of social economy, the construction industry is rising rapidly. The introduction of BIM technology into China, helps to reduce the consumption of building energy resource and advance building energy conservation. The comprehensive evaluation and analysis of building energy consumption is carried out through BIM technology. Revit software is used to simulate building construction and improve construction management. Quality and safety are the priority in the process of engineering construction projects while maintaining environment-friendly and sustainable development is next to this. This paper analyzes the BIM technology usage about Green Building in a systemic way, such as visual BIM model, design error correction, pipeline synthesis, construction coordination, virtual reality and operation management. BIM provides analysis and management for the sustainable development of green buildings, and has great potential in promoting the development and innovation of green buildings.
Experimental Study on Chloride Ion Removal in High-Salt Wastewater System
Authors: Lu Jie , Ma Mengdie , Li Dengxin , Xu Shihong 
Published: June 2020

Abstract
Chlorine is usually present in the environment in an ionic state, is highly mobile and difficult to degrade. High-chlorine wastewater can corrode buildings and affect the growth of animals and plants. Therefore, how to solve the environmental problem of high concentration of chloride ions well and effectively has drawn the intensive attention of the society. In this paper, chloride ion is removed from wastewater with the method of coprous chloride precipitation, and investigation is made on the effects of pH, temperature, amount of precipitant, titration time and reaction time on the removal efficiency of chloride ions. The results show that: when nCuSO4:nNa2SO3:nNaCl: n(ascorbic acid) =1.3:1.1:1: 0.01, and reaction pH is 3, temperature is 80 °C, titration time of sodium sulfite is 20min, reaction time after titration is 30min, the chloride ion has the optimal removal efficiency. SEM method is used for the characterization of the precipitates formed by the reaction. The results show that the experimentally produced complex cuprous chloride is irregular polyhedron with uneven particle size.
The Impact of Regional Power Trade on CO2Emissions in the Greater Mekong Sub-region
Authors: Chen Qinggui , Wang Bangcan , Ding Wenjiao , Liao Zhengkan , Zhang Hong , Zhao Guixin 
Published: June 2020

AbstractThe Greater Mekong Sub-region (GMS) is a natural economic area bound together by the Mekong River, and the GMS member countries includes Cambodia, the People’s Republic of China (PRC, Yunnan Province and Guangxi Zhuang Autonomous Region), Lao People’s Democratic Republic (Lao PDR), Myanmar, Thailand, and Viet Nam. In recent years, with the economic growth of the Greater Mekong Sub-region countries, the demand for electricity has been growing rapidly, and that might lead larger CO2emissions. Fortunately, there are abundant hydroelectric power resources in this region, and huge potential for complementarity in the supply and demand of electricity among countries. In this paper, an economic optimal dispatching model for thermal and hydroelectric generating units is introduced, and the effects of interconnections and cross-border power trade on the CO2emissions in the Greater Mekong Sub-region are investigated. Finally, through a concrete example, it can be proved that after the implementation of interconnection and cross-border electricity trade in the Greater Mekong Sub-region, the CO2emissions will be greatly reduced.
Evaluation of Physical Function and Air Pollution Tolerance of Roadside Tree in Bogor Botanical Garden’s Surrounding
Authors: Febrianti A M , Sulistyantara B 
Published: June 2020

Abstract
Air pollution causes decrease life quality ini urban areas. One solution in reducing air pollution is to use vegetation. The roadside Green Line consists of several types of vegetation, one of the trees. The ecological functions of the tree include pollution absorber. Roadside tree have specific physical appearance to determine its function. Roadside trees as living character that grow in polluted areas have different tolerance levels, one way of measuring tolerance based on biochemical parameters is the Air Pollution Tolerance Index (APTI). APTI can be a performance consideration of a tree type in a habitat of growth. The purpose of this research are to evaluating the physical function of roadside tree, to analyzing APTI. Based on the result of the study, the suitable (very suitable and suitable) physical function of roadside tree for absorbing gas air pollution was 62.78% and for adsorbing particle air pollution was 80,5% of total population of tree around Bogor Botanical Garden. Findings revealed that among 10 plant species are intermediate tolerant to air pollution and 11 plant species are sensitive to air pollution.
Design of Muster Area as Earthquake Evacuation Area in North Lombok Regency, West Nusa Tenggara
Authors: Amni B D H , Hadi A A , Perdinan  
Published: June 2020

Abstract
Mitigation of disaster is an effort to decrease the impact of damage caused by natural disasters i.e. earthquakes. West Nusa Tenggara Barat Province (NTB) Indonesia was hit by 7.0 earthquakes in July 2018. Earthquake disaster affects the community to become a traumatic feeling and disease because of the lack of supporting facilities in the mitigation area. The local government of Lombok is preparing reconstruction and rehabilitation including mitigation area. The Green open spaces of the city can be utilized as an evacuation area or muster area in the incident of a natural disaster. Muster areas as disaster mitigation are still rarely found in Indonesia, particularly in North Lombok Regency. The muster area should be placed on the area of potentially occurring natural disasters in the Regency. Infrastructure and network utilities of muster areas must have several sectors, such as the provision of drinking water, electricity, telecommunications panel, accessibility, drainage, sewer system, parking area, and a toilet. However, green open space in North Lombok Regency, particularly in natural disaster-prone areas, is not yet utilized as a muster area. The muster area was designed according to people’s needs. The questionnaire method was used to obtain input from North Lombok People who experienced the disaster.
Study of Urban Farming Potency to Support City Landscape Quality in the District of South Bogor
Authors: Qoriyati  , Nurhayati  
Published: June 2020

Abstract
The rapid conversion of agricultural land into a built space has an impact on the quality of the city landscape. Urban farming is agricultural practice efforts in urban areas by using narrow land to produce food to fulfill the needs of urban agricultural products, while providing the benefits of landscape services especially in improving the quality of urban landscapes. This study aims to identify the potency of urban farming in the district of South Bogor to support landscape quality of Bogor city including ecological quality, aesthetic quality, and social quality of the community. From the research identified areas of agriculture covering 1.609,19 ha and agricultural activities in 49 farmer groups at district of South Bogor. In addition, a total of 164 plant were identified with a plant diversity index value of 2,774 classified as moderate. The results of the descriptive analysis of the landscape aesthetics at district of South Bogor show that urban farming and borrowing landscape from Mount Salak and Mount Gede Pangrango are able to present an attractive aesthetics of the city landscape. The results of the chi-square test showed that the respondent’s background in the form of profession and education had a significant influence on the social interaction of the community in the farmer group. Landscape management recommendations consist of a basic concept to maintain agricultural land and urban agricultural activities with 7 landscape management strategies that can be through development actions in macro by Bogor city government and micro through agricultural activities by farmer groups at district of South Bogor.
Identification of Tourist Attractions in Timpag Village
Authors: Krisnandika A A K , Yusiana L S 
Published: June 2020

Abstract
The development of tourist attraction is an alternative way to improve the income of the people who live in and surround a village. The development of tourist attraction in a village should be in harmony with its environment in order to have a positive impact. Timpag village is one of the villages in Tabanan district, Bali which is trying to become a tourist village. At present, the development of tourist attractions in the Timpag village is occur sporadically and has not been based on the potential of the village. There is no master plan or initial study related to the tourism potential of the Timpag village. Identification of attractions and tourist activities in this village is needed in each tourist attraction to facilitate planning and development of sustainable tourist attractions. The method to obtain data is deep interview with government staff and tourist attraction owner is used to get data, swot analysis is then used to process the data obtained. Timpag village has 3 tourist attraction that is being developed sporadically, namely Uma Urip, D’Bendungan View and Batur Holly Spring at Sambian Undagi Farm. Based on these results, the recommendations of the types of tourism developed are given to each tourist attraction, namely Uma Urip has the potential to be developed as natural tourism, D’Bendungan View could be promoting as recreational tourism, and Batur Holly Spring can be developed as cultural tourism.