bluuebunny/crossref_metadata_2025_split huggingface dataset:
The use of sugar-cane waste (Bagasse) energy as substitution of fossil-fuel energy in Krebet Sugar Factory, East Java, Indonesia
Authors: Eka Sari Kartika , Meidiana Christia 
Published: August 2019

Abstract
Industry is one form of economic activities that process raw material and/or utilize industry resource to produce product with a higher value or benefits. Rapid growth of industrial activities an increase community’s welfare. While on other side, industrial development can increase the value of CO2 emission that can influence global warming. Krebet Sugar Factory in one of the largest sugar industries in Indonesia and so far, still using fossil fuels (gasoline, diesel, residue oil) as energy resource in production process. Based on 2011 National Greenhouse Gas Emission Reduction Action Plan, CO2 emission reduction’s target in Indonesia, especially in industrial sector for year 2020 is 0,001 Gton CO2 (Scenario 26%). One of mitigation action that can be done to support CO2 emission reduction is using alternative energy resource/fuel bagasse. The aim of this research is to evaluate utilization of factory waste for alternative energy resource/fuel (bagasse). Krebet Sugar Factory have production capacity of 840 ton/day. Average of Electricity resource provided by PT. PLN is 26,40 KVA/month, while the electricity average usage provided by Krebet Sugar Factory’s power plant is 4.320 KVA/month and Krebet Sugar Factory Fuel’s consumption for one year is 19.500 ton. Based on production data, average bagasse production of Krebet Sugar Factory is 420.533,34 ton so can produce energy value in the amount of 4.878,19 Terajoule that can be used as an alternative energy resource.
The endurance test of Nannochloropsis sp. paste isolated from Lampung Mangrove Centre (LMC)
Authors: Tugiyono  , Setiawan Agus , Rusyani Emy , Suharso  , Nurjannah Siti 
Published: August 2019

Abstract

Nannochloropsis sp. has been used as natural feed because it has high nutrition that is good for fish larva growth and development. However, the Nannochloropsis sp. availability continually is in insufficient amount and this often becomes a problem in culturing because this is difficult to culture in mass volume. The objective of this research was to make Nannochloropsis sp. paste and to test the paste quality based on the life endurance of Nannochloropsis sp. cells from isolate of Lampung Mangrove Centre in intermediate scale culture by using different fertilizer combination and NaOH doses. This research used factorial completely randomized design with two treatments and three repetitions. The first treatment was administration of agricultural fertilizer combination of (P) urea 40 ppm, ZA 20 ppm, and TSP 5 ppm, and Conway (C) technical fertilizer as control. The second treatment is the administration of NaOH doses of: 100 ppm, 125 ppm, 150 ppm, and 175 ppm. Data were analyzed by using One Way Analysis of Variance (ANOVA), and Least Significant Difference test with α = 0.05 was performed whenever any significant difference was found. The research result showed that Nannochloropsis sp. paste from isolate of Lampung Mangrove Centre had highest life endurance level with Conwy technical fertilizer and dose of NaOH 100 ppm with population density of 18066666.67 x 104 cell/mL.
The geodiversity potential of Tanah Datar District developing into a geotourism asset as a geopark in Indonesia
Authors: Osronita  , Anwar Syafri , Heldi  , Barlian Eri 
Published: August 2019

Abstract
This study aims to determine the geodiversity potential of Tanah Datar District, developing into a geotourism asset as a Geopark in Indonesia. This type of research is qualitative descriptive research. The research data acquisition technique was carried out by observation, literature study, interview, FGD (Focus Group Discussion), the method used to determine the delineation of the geoheritage area using the Geographic Information System (GIS) using GIS Arc Software 10.5. The results of geodiversity potential research in Tanah Datar District consist of 3 geosites; 1) Mount Marapi, Mount Singgalang-Tandikek, Straightness of Five Fault Lake (5) Fault Lake and Active Sectional Tectonic Lake 2) Waterfall from hot spring 3) Straightness of Andesite Intrusion. The Geo Area Tabek Patah Salimpaung Normal Fault includes geosite; 1) Straightness of Fault and Fault Talent 2) Lineage of Telaga Line Saga Telaga Air Pakis and Telaga Air Taranang. Geo Lintau Buo Karst Area with Geosite 1) Eksokarst 2) Sinkhole 3) Underground River 4) Goa / Ngalau with Stalactite-Stalagmite 5) Dolina. The potential of this geodiversity is Geotourism Assets and the potential for the development of Indonesian Geopark.
Study on sustainability status of smallholder oil palm plantations Jambi Province, Sumatra Indonesia
Authors: Rosyani  , Edison  , Asmadi  
Published: August 2019

Abstract
The growth of oil palm plantations in Indonesia is growing rapidly. Issues of oil palm plantations that are not environmentally friendly are continuously exposed. The purposes of this research are, 1) To determine the role of smallholder in managing oil palm plantations, 2) To analyse the status of sustainability of oil palm plantations, 3) To find sensitive attributes that affect the sustainability of smallholder oil palm plantation management. Analysis method is to answer the first objective which is done descriptively, the second objectives was conducted with MDS approach, with Rappalm, third objectives are to analyse attribute lever was conducted with Leverage analyse. The result of the research is that smallholders can cultivate oil palm plantations. The status of sustainability indicated a very sustainable status (80.41), meaning that economic factors and social factors leverage ecological factors to be sustainable. This means that smallholder should improve the pattern of oil palm crop farming, with lever attributes, namely tree planting among islands of oil palm (plot scale). The integration of sensitive attributes, with the economic dimension and social dimension, produced a research output which have provide solutions sustainability of the smallholder oil palm plantation.
The contributions of discipline and environmental knowledge on clean behavior of students in Public Elementary School 19 Kampung Baru Pariaman, West Sumatra
Authors: Syah Nurhasan , Edinov Sanny 
Published: August 2019

Abstract
This study aims to obtain a description of the contribution of discipline and environmental knowledge to the clean behavior of students in public elementary school of 19 Kampung Baru, Pariaman. Quantitative approach was used in this research. The sample of this research were the students in grade I-VI at public elementary school and taken by simple random sampling of 81 students. The data were collected by asked to fill in the questionnaires. Results showed that: (1) There was a contribution of discipline (X1) to students clean behavior (Y) equal to 27.70%, (2) There was a contribution of environmental knowledge (X2) to students clean behavior (Y) equal to 53.00% And (3) There was a contribution of discipline (X1) and environmental knowledge (X2) to the students clean behavior (Y) of 54.20%. The results suggest that the discipline (X1) and environmental knowledge (X2), either individually or jointly contributes to students clean behavior (Y). This provides some explanation as to why principals and teachers in school should monitor the students discipline and environmental knowledge. This knowledge can support the clean behavior to the surrounding environment. On the other hand, it is also advisable for students to always improve their own discipline and environmentalknowledge.
The role of natural science courses to implement the environmental education in elementary school (curriculum 2013)
Authors: Titiek Winanti E , Kustini Indiah , Rahmadiyanti Erina 
Published: August 2019

Abstract
Human behaviour is strongly influenced by prerequisite knowledge, residential, working place, and schools/studying place situation as well as friend or companion’s behaviour. Soldiers have different behaviours compared to educators, doctors, farmers, traders, and so forth. To make students become environmentally friendly-human beings, they need to have knowledge on how to protect the environment. Since 1986, the Republic of Indonesia government has included environmental education into school curriculum; and the end is the 2013 curriculum (C-13). There are eight subject courses in elementary school’s 2013 curriculum. Of the eight subjects, Natural Science is relevant subjects as a means to implement the environmental education (EE) concepts. Natural Science is taught in grades IV, V, and VI using thematic approaches for 9 x 40 minutes a week. However, the implementation of C-13 in elementary schools is still less optimal because there are still many prerequisite factors to be fulfilled, such as: infrastructure, learning resources, teachers’ skills, and assessment systems. In conclusion, Natural Science subjects has a significant role to debrief the environmental education concepts especially in elementary school. Thus, learning model and media of natural science need to be further developed.
Mapping of potential green city attributes in Batu District, Batu City
Authors: Utami Azis Sri , Eka Sari Kartika , Nirvana Hanita 
Published: August 2019

Abstract
Batu District is located in Batu City defined as BWK I which is designated as central government development, modern trades and services development, tourism development, supporting services of tourism accommodation and education area. As the center of city development, the area / development that occurs in Batu District will have an impact on the increase in temperature. This research aims to identify the Batu District based on green city attributes such as green open space, green waste, green water, green transportation, green energy, green building, green planning and design, and green community that can be developed in Batu District. The method of analysis in this research are using descriptive analysis to determine the attributes of green city that can be found in Batu District. Based on the description of the seven attributes of Batu City, it is known that Batu City has 5 green city attributes that are being developed, namely Green open space of 32.317 m2, Green Waste (separate waste bins and 5 garbage bank communities), Green Water (29 9 units of recharge wells, 4 communal waste water treatment plant (WWTP) and 1 individual WWTP. Green Energy (30 units of biogas) and Green Community (5 green city observers). As for the development of Green Building and Green Transportation attributes have not been done in Batu City.
Critical land mapping for the development of biomass-based energy in East Lombok Regency, Indonesia
Authors: Narendra B H , Widiatmaka  , Kusmana C , Karlinasari L , Machfud  
Published: August 2019

Abstract
Utilization of critical land as woody biomass plantations need to be supported by information on the potential of critical land. The objective of this research was to delineate a critical land using remote sensing and GIS techniques combined with Analytical Hierarchy Process method. The parameters used were land use/cover, slope, rainfall erosivity, tolerable soil erosion, soil erodibility, land management, and land productivity. The Analytical Hierarchy Process method was used to provide the weight of each parameter. Land use/cover map was interpreted from SPOT-7 satellite imageries acquired in 2017. The other parameter maps were built based on reference maps, secondary and field data collection as well as soil sample analysis. The resulted map showed that 32.7% area of East Lombok Regency was categorized as a critical area. Based on the land status, the critical land area located in the State Forest was smaller (42%) than on the Area for Other Utilization (58%). Utilization of critical land as woody biomass plantation should be prioritized on the shrub-covered land using community forest scheme, while for the area of State Forest, the plantation can be only planted in the production forest area applying industrial plantation forest or community plantation forest scheme.
Determining the public understanding on the public policy based on cosmopoliteness and innovativeness
Authors: Rahmatulloh  , Made Putrawan I , Yufiarti  
Published: August 2019

AbstractThe aim of this research is to determine the relationship between Cosmopoliteness, and Innovativeness with the public understanding on public policy in Jakarta, Republik Indonesia. A survey method was applied with a correlational study. The respondents were the heads of families and 120 samples were chosen randomly. There were four instruments which measured the public comprehension (rel..922), Cosmopoliteness (rel. .912), and Innovativeness (rel. .935). Data were analyzed by two-way ANOVA. The result of this research was revealed that there was positive and significant correlation among those variables. Therefore, it is concluded that to increase the public’s understanding on public policy, reinforcement in aspects of Cosmopoliteness and Innovativeness need to be improved.
Evaluating the implementation of Konawe regional regulation number 5/2007 on public mining management
Authors: Yuslan  , Nadiroh  , Mukhtar Mukhneri 
Published: August 2019

Abstract
This research aims at determining the implementation of Konawe regional regulation number 5/2007 on public mining management, with the focus on a C-Class mining activities in Tuoy Village. Tuoy Village, Unaaha District, is one of the center of C group mining activities in Konawe Regency, Southeast Sulawesi Province. It is recommended to the Regional Government and all elements involved in mining management to take concrete steps in preventing further damage to the environment in the futureby maximizing the implementation. To find out the implementation of Konawe Regional Regulation Number 5/2007 on Public Mining Management the writers use Merilee S. Grindle model of approach. The level of success of a public policy according to Grindle is determined by the level of policy implementation itself, which consists of the Content of Policy and the Context of Policy.
Study on Q modulation of longitudinal polarization electro-optical diffraction based on MgO: PPLN crystals
Authors: Wang Y H , Li Y , Liu H , Liu H Z , Yu Y J , Jin G Y 
Published: August 2019

Abstract
We add electrodes to the upper and lower surfaces of periodically polarized lithium niobate, and load voltages at both ends of the electrodes. Without introducing additional devices, we construct an electro-optic Q modulation mode similar to the principle of acoustooptic Q modulation. The diffraction characteristics of light propagating along the x-axis of PPLN are simulated, and the diffraction characteristics of the incidence Angle in Prague and electro-optic diffraction Q of the load voltage are studied. On the basis of experiment research, the final 10 kHz in repetition frequency, the pulse width of 8.58 ns of the vertical polarization electric light diffraction tuning Q laser output, maximum peak power of 1486 W, the highest average power of 3.6 W.
Austenite Grain Ultra-refinement of 42CrMo Steel Induced by Electropulsing Treatment
Authors: Zhang Jiatao 
Published: August 2019

Abstract
With the increasing demands for steel products with both higher strength and toughness to meet the requirements for weight reduction and security promotion, steels with fine grained microstructures cannot meet the application demands any more, and should be further strengthened without toughness or other property loss, such as fatigue lifetime. Ultragrain refinement is a promising way to strengthen steels without toughness loss. For steels with the final bainite, martensite or tempered martensite structures, microstructure refinement basically depends on the prior austenite grain size reduction. In this study, electropulsing treatment (EPT) was used to refine the austenite grain, because pulse current shows remarkable influence on microstructure of metallic material. Results in this study confirm that the prior austenite grains (PAGs) can be ultra-refined by pulse current. When the steel was quenched from peak temperature less than about 850°C during EPT, the average PAGs size was less than 5μm. With the increasing of peak temperature during EPT, the PAGs became coarsening. But the PAGs in samples quenched from peak temperatures less than 1000° were still finer than that quenched from recommend 850° during conventional heat treatment (CHT). EPT induced grain refinement is related to the thermal effect and athermal effect of high density pulse current. The thermal effect results in high heating rate as high as 7700°C/s. In order to analysis the influences of rapid heating effect and athermal effect of pulse current itself on the grain refinement, J Mat Pro software was used to calculated the PAGs size at the same heating rate as that during EPT, which represented the nucleation rate and grain size only under the influence of thermal effect related to rapid heating. However, the simulated result shown the PAGs cannot be ultra-refined during simplex rapid heating. This reveals that the athermal effect of high density electric current itself plays a key role in the EPT induced austenite grain ultra-refinement.
Research on Preparation Method and Mechanism of Cylinder Ultra-fine Crystal Metal Spinning
Authors: Yang Yu , Jia Yanyan 
Published: August 2019

Abstract
Modern industry requires metal materials with high forming quality and excellent mechanical properties. Ultra-fine grain metal makes ordinary steel obtain good comprehensive performance, reduce the consumption of high-performance metal, improve material utilization and performance, and is of great significance to the manufacturing industry. In this paper, the body-shaped cubic metal 20# steel cylinder parts are taken as research objects. By exploring the forming principle of ultra-fine crystal structure cylindrical parts, the finite element simulation of the strong spinning process of the cylindrical parts is carried out. And the forming process experiment of ultra-fine grain structure spinning and heat treatment experiment are also carried out. Thus, the plastic deformation mechanism is revealed, and a method for preparing an ultra-fine grain material based on combination of strong spinning and recrystallization annealing is proposed. The research reveals the relationship between mechanical properties and microstructure of ultra-fine grained materials. The research results have great scientific significance for promoting the development of ultra-fine grain metal material preparation technology.
Hot corrosion behavior of Yb2Si2O7 ceramic by NaVO3 and V2O5 at 700° to 900°
Authors: Zhang Yongqiu , Sun Daqian , Ren Zhenan , Zou Binglin 
Published: August 2019

Abstract
To better understand the hot corrosion behavior of Yb2Si2O7 ceramic in molten NaVO3 and V2O5, corrosion experiments were performed using sintered Yb2Si2O7 bulk ceramics with NaVO3 and V2O5 coatings at temperature range of 700 Ό to 900 °C in air. Corrosion products of YbVO4 and SiO2 were identified under NaVO3 corrosion. But only YbVO4 was found under V2O5 corrosion with some residual corrosion agent. In above two conditions, the corrosion products of YbVO4 have the same crystallographic structural characteristic, but morphology has significant difference. In the first case, YbVO4 is rod-like with a tetrahedral cone at each end because of NaVO3 being weak acid to lead to lower driving force for the corrosion reactions. Thus corrosion products of YbVO4 grew with less nuclei and large elongation. However, V2O5 showed strong acid with strong driving force bringing higher nucleation rate and suppressing the growth of YbVO4, which resulted in granular YbVO4. And the size of granular YbVO4 crystals increased slightly with test temperature rising.
Research on absorbing performance of activated carbon
Authors: Yu Zhang 
Published: August 2019

Abstract
The absorbing properties of activated carbon were studied and tested by making use of RCS in “the reflectivity testing measurement of radar absorbing material” of GJB 2038-94 in this work. The effect of electromagnetic parameters and thinness on absorbing properties of materials was discussed. The results indicate that in the whole 12∼18 GHz frequency band, the dielectric constant decreases with increasing frequency, the dielectric loss angle tangent with the frequency gradually increased, and the activated carbon is a kind of anti magnetic media, but it also has some paramagnetic. The sample thickness has little effect on the wave absorbing property in the 12∼18GHz frequency band;
Experimental techniques used in topological insulators and realization of quantum spin Hall effect
Authors: Zhang Yichen 
Published: August 2019

Abstract
With the theoretical development and prediction of various topological insulators in two and three dimensions, experimental realization of those topological states and engineering of their characteristics have been hotly pursued, among which the quantum spin Hall effect exhibited in two-dimensional topological insulators have raised lots of concern. This paper aims to firstly give a brief introduction to experimental techniques used in growing and characterizing topological insulators and then we focus on a specific direction, the realization of quantum spin Hall effect, to elucidate one ramification of the experimental progress in the realm of topological insulator. The quantum spin Hall effect distinguishes itself due to its lack of non-magnetic scattering preserved by time reversal symmetry in its edge channels. Thus, materials showing such phenomenon are significantly promising for achieving dissipationless spintronics.
Study on properties of aluminum alloy welded by friction stir welding
Authors: Luo Chuanhong , Zhang Jianqiang , Wen Jungang 
Published: August 2019

Abstract
In order to meet the special requirements of aerospace industry for materials of aluminum alloy, the precisely controlled heat treatment was studied. The 2219 aluminum alloy welded plate was prepared by friction stir welding, and its microstructure and mechanical properties were studied correspondingly. The reasons for strength reduction of welded joints are analyzed and summarized. The research results showed that the average tensile strength of the welded joints increased to 393 Mpa and the elongation increased to 12.6% of the base metal. With the special recrystallization technology of high temperature oscillation heat treatment, the fine grains can be maintained, the plasticity of aluminum alloy can be restored, which means that the softening problem can be eliminated and the mechanical strength can be improved.
Microstructure evolution and residual stress changes of the GH4169 alloy by wet shot peening
Authors: Zhou P F , Zheng H Z , Guo S H , Cheng S P , Li G F 
Published: August 2019

Abstract
GH4169 alloy was shot-peened with processing durations of 3 min and 10 min. The effects of dry and wet shot peening on the microstructure and residual stress were investigated. The results demonstrated that a severely deformed layer manifests on the surface of the shot-peened GH4169 alloy samples. Compared with the dry-peening samples, the surface defects of wet-peening samples obviously decrease. With the shot peening treated for 10 min, the surface microhardness of the dry peening and the wet shot peening increased by 20% and 17% respectively compared with the original surface hardness. The deformation mechanisms of the GH4169 alloy could be attributed to dislocation and deformation twining, as detected by TEM observations. Compressive residual stress was introduced into the surface layer of the shot-peened GH4169 alloy. The maximum surface residual compressive stress (SRS) and maximum residual compressive stress (MRS) were -586 MPa and -795 MPa, respectively. The MRS and SRS were improved with increasing processing duration. The SRS of the wet-treated specimens was slightly higher than that of the dry-treated samples under the same processing parameters. However, the MRS of dry-treated samples was much larger than that of the wet-treated samples due to the higher shot intensity.