bluuebunny/crossref_metadata_2025_split huggingface dataset:
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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.