bluuebunny/crossref_metadata_2025 huggingface dataset:
Testing of Autonomous Onboard Device for Small Aircraft Flight Safety Improving in Central Asia countries
Authors: Aitmagambetov A , Yeryomin D , Saterov N , Zhaxygulova D , Kaliyeva R
Published: November 2020

This article is devoted to the issue of ensuring the safety of small aircraft flights in the airspace of the Central Asian countries. In this regard an analysis of known technical solutions has been carried out. The results of the analysis are presented in the article used as the basis for an automated system of the small aircraft flight path monitoring using global navigation satellite systems and low-Earth orbit satellite communication systems developing. This automated system aims to increase the efficiency of an organization of search and rescue efforts. One of the elements of the automated system is an onboard terminal, which is a remote technical mean installed on the aircraft. To this end during operation, the onboard terminal is vulnerable to environmental factors. So, this article discusses the developed methodology and results of conducted experiments on checking the execution of the functions and resistance to external climatic and mechanical influences.
Evaluating Cost-Effective Culture Media for Nutraceutics Production from Microalgae Using Computer-Aided Large Scale Predictions
Authors: Ibanez A , Rolon Y , Gelves G
Published: November 2020

The purpose of this research consist of microalgae biomass productivity prediction in a large scale plant from Chlorella vulgaris using SuperPro Designer software. Two culture media were evaluated to identify their potential use in large-scale processes: (a) the Bold Basal medium enriched with sodium acetate and (b) a growth medium for high cell density cultures proposed from references. Results found in this research suggest that simulated plant should reach a capacity to generate 1.4 kg/h of biomass at a cost of 1.44 USD/g using Bold Basal medium. In contrast, a productivity of 28 kg/h at a cost of 0.14 USD/g was found using a medium proliferation of highly dense microalgae cultures. These findings suggest that Bold Basal medium could negatively impact operating costs, limiting its use in large-scale processes regarding nutraceutics production. Results found here demonstrate the potential usage of simulators for estimating costs and production which allows predicting the bioprocess feasibility.
In-Ground Decay Modeling of Historic Timber Foundations of Sultanate Mosque in Sambas, Indonesia
Authors: Wibawa Uray Alif , Prabowo Herry , Fitriyanto Ari
Published: November 2020

Timber is a construction material easily degraded when exposed to the weather without any particular treatment. The deterioration risk of timber structures increases over time. The historic buildings suffer the most severe deterioration after exposed to hundreds of years. The demand for preserving the heritage building as a legacy from the past is increasing nowadays. Thus, it is essential to know the building’s residual service life to determine the proper measures at the right time. It is required to decide when the responsible party should do a replacement or repair action on the main building elements. The simulation of decay depth on the Sambas Sultanate Palace showed that the timber foundations had not faced severe deterioration problems. The occurring decay depth is 25.940 mm (in 135 years), and the initiation of decay occurred in 22 years after the mosque was built. It has not reached the center of the foundation cross-section yet. Thus, it is concluded that the building is in excellent stability and safety condition.
Threshold Determination in Multislice CT-SCan using Improved Marching Cube Algorithm (IMCA) for 3D Image Reconstruction Process (3D-IRP)
Authors: Purnama I L I , Tontowi A E , Herianto
Published: November 2020

Medical diagnostic information has been a change in clinical medicine development, including medical image and computer technology. The paper aims to determine the threshold for the 3D-IRP with a multislice Computerized Tomography Scan (CT-Scan). The 3D-IRP method is the IMCA technique. Skull and Sternum are the focus of the 3D medical image. It is in the multislice CT-Scan format of Digital Imaging and Communications in Medicine (DICOM). Surface volume and area, and visual shape are performance criteria of the 3D-IRP are matching with a software package (InVesalius ver. 3.1). The optimum threshold for the 3D bone representation of objects is 210. The difference in 3D image surface area and volume between the prototype's performance and the software package is smaller than 0.50%. Based on the three radiologists, the Skull and Sternum's visual shape is roughly 100% balanced.
Use of Operational Training Simulation in the Study of Ethanol Operating Conditions: A Powerful Tool for Education and Research Performance Improvement
Authors: Alvarado K , Bayona J , Consuegra J , Parada D , Sepúlveda N , Gelves G
Published: November 2020

Currently, virtual education has reached a significant boom in higher education institutions. The latter, considering health emergency due to coronavirus pandemic, which makes it difficult to re-open physical infrastructures. As a consequence of the above, there is concern about experimental development taught by higher education and research institutions, since the execution of the experimental component is still considered a challenge due to uncertainly of on-going infections. Currently, the University of Bremen, Germany has implemented an operational training simulator for the study of bioprocess based on mathematical equations and experimental confirmations. The software enables teaching of virtual handling and operation of bioreactors. Students and engineers can deal with real situations that arise in the plant operation. Fermentations in different modes to reflect its effects on productivity could be studied. The main purpose of this research is determining the best operating conditions for the ethanol continuous production using the BioProcess Trainer software. One of the most important findings suggest a bioreactor feed rate of 5 mL/min charged with 20 g/L of glucose to reach a productivity of 0.037 g/L.h. Results found here demonstrates the Bioprocess Trainer potential capacity not only in the study of industrial plant operating conditions but also regarding educational institutions since mentioned tool improves engineers’ expertise.
Evaluating Road Networks Performance: Capacity Restraint Method
Authors: Rahman Aulia , Irawan Muhammad Zudhy
Published: November 2020

Traffic condition in Yogyakarta City faces growing volume each year. Meanwhile, the development of road is increasingly harder to expand due to limited availability of lands and funds. Therefore, evaluation of road networks is needed to avoid, reduce and eliminate traffic congestion in Yogyakarta. In this study, the authors aim to build road network model representing traffic condition in Yogykarta. Capacity restraint method is used for traffic assignment with the assistance of ZIN software. ZIN capability to model complex road networks is also assessed.
Economic Assessment of Itaconic Acid Production from Aspergillus Terreus using Superpro Designer
Authors: Nieto L , Rivera C , Gelves G
Published: November 2020

Itaconic acid is a metabolite produced from biotechnological pathway using the microorganismAspergillus terreus.It is used in a wide number of sectors such as industry, agriculture and health. Based on its chemical properties, itaconic acid is a great interest for replacing polymers and resins derived from petroleum. However, its production is still expensive and this latter hinders large scale studies regarding itaconic acid production. Nowadays, simulation is a great alternative to overcome this problem. It allows researchers to make a more effective evaluation and self-assessment, reducing costs and avoiding losses at large scale operation. For that reason, the purpose of this research is performing an Itaconic acid production simulation on industrial scale using SuperPro Designer software. Costs reduction improvement is also analyzed. 90g/L of glycerol, 1g/L of NH4NO3and 1.25 of KH2PO4 are set up on simulation as media composition reported from references. Results regarding itaconic acid crystals showed a productivity of 171 kg/h and an operating cost closed to 42.0 USD/kg. Interestingly, a 17 % productivity increase is reached by proposing a stream recycling based on itaconic acid recovering from downstream centrifugation processing. The latter based on a higher productivity estimated (200 kg/h). Also average costs are reduced at 12 % since 38.1 USD/kg is found using improvements mentioned. Results found here demonstrate the potential usage of simulators for estimating costs and production which allows predicting the bioprocess feasibility.
Analizing Elementary School Teacher’s Understanding (ESTU) in Scientific Communication skills (SCs)
Authors: Hermita N , Alim J A , Mulyani E A , Putra R A , Alpusari M , Fauza N , Sari I K , Chairilsyah D , Rayendra R , Anggoro S
Published: November 2020

The purpose of this research is to analyse the understanding of science communication on elementary school teacher. This research method is descriptive quantitative. The research subjects are 30 elementary school teachers from 6 elementary schools FKIP Riau University Partners. The results showed that the understanding of elementary school teachers about science communication on the aspect of predicting 12 teachers are in the very good category, on the aspect of questioning 18 teachers are in the very good category, and in the aspect of presentations 10 teachers are in the very good category. Based on these results, it can be concluded that the SCs skills of teachers are already in the very good category.
Naive Bayes Method for Classification of Student Interest Based on Website Accessed
Authors: Nazir Alwis , Akhyar Amany , Ramadhani Muhammad , Herlina
Published: November 2020

Interest is a feeling of liking a thing or activity without any coercion. Students' interest in a certain subject will maintain students' learning abilities, thus they could master it and get good learning outcomes. Interest can be known from the website accessed. The aim of this study is to build a web-based application that could classify student interest using Naïve Bayes based on the website accessed. In this study, the data used are 17.265 student internet history data. The application was tested using Black Box and the method was tested using Confusion Matrix. The result from the application testing met the expectation, and the method (Naïve Bayes) reached 99,81% accuracy using 70:30 data percentage. The top five classes obtained are Social Networking, Educational Institution, Streaming Video, Search Engines, and Web-Based Mail. The “Develop” class was also found, thus the study group related to application development is recommended to be formed.
The Synthesis of Biodiesel from Crude Palm Oil (CPO) using CaO Heterogeneous Catalyst Impregnated H2SO4,Variation of Stirring Speed and Mole Ratio of Oil to Methanol
Authors: Nurhayati  , Amri Tengku Ariful , Annisa Nurul Fitri , Syafitri Febria
Published: November 2020

Biodiesel is a diesel engine fuel produced from renewable material and contains fatty acid alkyl ester from triglyceride or oils through transesterification reactions with short chain alcohols and catalysts. In this study biodiesel was synthesized using crude palm oil (CPO) using CaO catalyst from blood cockle shells calcined at 900 °C for 5 hours and impregnated with H2SO4 (1,2 and 3M). The catalyst was characterized by XRD and XRF. The biodiesel was synthesized with variation of stirring speed (300, 400, 500, 600 rpm) and mole ratio of oil to methanol (1:6, 1:9, 1:12, 1:15 and 1:18. The maximum biodiesel results obtained on a H2SO4 (3M)/CaO catalyst with a stirring speed of 500 rpm and mole ratio of oil to methanol was 1:12 at the transesterification reaction stage and using a CaO catalyst calcined at 900 °C for 5 hours produced a yield of 96.69%. The characteristics of biodiesel produced was water content 0.05%, specific gravity 890 kg/m3, viscosity 4.46 mm2s−1, carbon residue 0.05% and acid number 0.5 mg KOH g−1. It can be concluded biodiesel, meets the quality requirements of SNI 7182-2015
Hyposensitivity test of Lactobacillus fermentum InaCC B1295 probiotic bacteria on the growth of mustard greens (Brassica junceae L.)
Authors: Yunaira R. , Zulfarina  , Pato U.
Published: November 2020

The purpose of this study was to (1) determine whether the probiotic bacteria Lactobacillus fermentum InaCC B1295 were able to adapt (compatible) to mustard greens (Brassica junceae L.). (2) Knowing the effect of the probiotic bacteria Lactobacillus fermentum InaCC B1295 on the growth of mustard greens (3) Obtain the best concentration for the growth of mustard greens. This was an experimental study and used a completely randomized design (CRD) with 4 treatments and 4 replications to obtain 16 experimental units. The data were analysed using SPSS version 9.1.3 and ANOVA, then followed by Duncan's New Multiple Range Test (DNMRT) at 5% level. The results showed that the application of the probiotic Lactobacillus fermentum InaCC B1295 was significantly different from the control. So it can be concluded that the probiotic bacteria Lactobacillus fermentum InaCC B1295 are able to adapt their life (compatible) to mustard plants, and have a positive effect on the growth of mustard greens. The 105 CFU/mL dilution is a good treatment to stimulate the growth of mustard plants.
Different Techniques for Measuring Spatial Sound Properties of Auditoria: a Review
Authors: Bevilacqua A , Merli F
Published: November 2020

The interest in sound spatialization is strongly increased throughout the last decade. Sound spatialization, or as it is commonly named auralization, is very important for both the design phase of any listening room and the virtual reproduction of a 3D sound field [1]. The international standard ISO 3382:2009 explains the different techniques of how to measure spatial parameters (e.g. LE, LF, IACC) and one of the methods that can be performed for a binaural measurement is the utilization of a dummy head. Nowadays room impulse response (RIR) is often measured by using multichannel transducers working independently each other. This technique is very useful to virtually reproduce a 3D soundscape, corresponding to the same sound perception as it is found inside the architectural volume where the measurements have been performed [2]. In this paper, an alternative procedure of measuring and reconstructing the auralization characteristics is presented. Furthermore, this methodology has been compared with other techniques of 3D sound reproduction. This paper treats the opportunity to improve the quality of soundscape reproduction other than the analysis of acoustical parameters required by standards.
The Shaping of the Student Character Caring for the School Environment through the Green School Movement in SMP Negeri 2 Adiluwih
Authors: Handayani Nur , Hariri Hasan , Sowiyah Sowiyah , Ridwan Ridwan
Published: November 2020

The scope of the school environment includes the physical, mental, and social environment. These three scopes are related to one another in shaping the character of students. A healthy, good, and friendly school environment is an ideal condition for students' learning process in school. Education should be used as an effective means of forming attitudes and concerns for the environment, through intensive education. It is possible to improve the quality of students’ positive attitudes and behaviours towards the environment. The problem in this study is how to shape the character and attitudes of students' concern for the school environment and how to overcome existing obstacles. This study aims to understand and apply the green school movement to the formation of environmental care characters from an early age and inspire principals as school managers to create an environmentally and friendly school as school culture in SMP Negeri (State Junior High School) 2 Adiluwih. This research is a descriptive qualitative study using document study and observation to collect the data. The results of this study are the school has efforts in implementing go green school program activities and integrating environmental materials in all subjects and have been included in each lesson plan and syllabus, self-development in daily activities. After implementing these program activities, students can care more about their environment. These program activities have contributed to making the SMP Negeri 2 Adiluwih win a national Adiwiyata (Green School) Award.
Assessment of Groundwater Quality Based on Geoelectric and Hydrogeochemical Paremeters Around Slaughterhouses of Pekanbaru City, Indonesia
Authors: Muhammad Juandi , Islami Nur
Published: November 2020

Groundwater management in an industrial environment is very necessary. This water is a source of consumption and sanitation for the community. The presence of the slaughterhouse industry near residential areas has the potential to pollute underground water if the waste is not managed properly. In Pekanbaru city, there is a slaughterhouse industry that operates around residential areas. The purpose of this study is to investigate groundwater contamination around the slaughterhouse. This study uses the integration of geoelectric and hydrogeochemical methods to investigate the level of groundwater contamination in several locations in the study area to see the sustainability of underground water both in quality and quantity. Based on the geoelectric method the flow pattern and depth of the aquifer have been successfully analyzed at intervals of 7.5 m to 11 m. and the results obtained from the geochemical method that the value of pH, BOD, COD, and NH3 is still below the standard threshold. Water quality index (WQI) is still classified as "good" with a score range of 25-50. Seemly, the slaughterhouse has implemented a waste management system properly, so it does not pollute the surrounding underground and surface water.
Innovative Solutions for Sewage using Food Chain Reaction (FCR) in Indonesia
Authors: Sari Yusra Aulia , Rifai Andri Irfan
Published: November 2020

Sewage has been a concern of environmental activists in recent years, given the increase in waste generated from offices, hospitals, industry, and households. In this research the focus is to discuss waste generated by households. The sewage treatment system used in most residential areas in Indonesia is still conventional. Conventional sewage treatment systems can be a serious environmental problem if there is no proper design and planning. The method used in this research is a case study of Innovative Solutions for Sewage using Food Chain Reaction (FCR) in one city in Indonesia, Batam. The results of this research explained the development of food chain reactor (FCR) in Batam, reactor configuration, observations from operating sites, plant operating data, aesthetics.
Study of User’s Response on the Pedestrian Bridge in Pekanbaru City
Authors: Rahmawati Yulia , Firzal Yohannes
Published: November 2020

A pedestrian bridge in urban areas exists not only to overcome crossing between people and vehicle but also gives a sense of security and comfort for its users. With a variety of user characteristics, the bridge has also used for other informal purposes. This phenomenon becomes interesting to study how the users respond to the various uses of the bridge. By using accidental sampling method for one hundred respondents, the field data has analysed in a simple linear regression model with data processing software. The result shows the safety, security, comfort, continuity and attractiveness are the primary considerations of users in utilizing the pedestrian bridge. Even though the physical condition has found less-expected, the user's response has generally categorized as sufficient.
More than Just a Material Perfection: Preserved Human-Environment Relationship in Traditional Brick-Making Scenarios
Authors: Wahid A R , Yatmo Y A , Paramita K D
Published: November 2020

This paper argues the importance of traditional, local bricks-making production as a convergence of craftsman, material, and environments. The relationship between those three aspects brings meanings to the brick, emphasise on the process of making beyond its property as a physical material. This paper focuses on the forming phase of the brick-making scenario, whereby the craftsmen have more control in altering the bricks clay. In particular, we conduct this study in three brick-making workshops in Indonesia, precisely in Songgom, Welahan, and Tanjung Pinang. It is found that the stories of identity, the tools used the production, and context-involved production is preserved within the end product. These findings contribute to the current architecture material discussion to look at the imperfection of traditional-made bricks as something that should be celebrated to preserve the local culture.
Upgrading Characteristics of Empty Fruit Bunch Biopellet with Addition of Bintaro Fruit as Co-firing
Authors: Amri Idral , Cahyono Aris Aprianto , Bahruddin
Published: November 2020

The low density of mass and energy are the main reason for the underutilization of great potential of Empty Fruit Bunch (EFB) as a raw material of alternative and renewable fuels. The using of bintaro fruit as co-firing and treatment of torre faction – densification processes were believed to increase the density of mass and energy of the EFB bio pellet. This study aims to determine the effect of residence time, compaction pressure, and addition of bintaro fruit to the characteristics of EFB bio pellet according to ISO 17225-6 standards. Bio pellet machine was carried out two processes sequence, namely the torre faction process and the densification process. The torre faction process was carried out at 275°C with residence time variations 30, 45, and 60 minutes. The densification process was carried out without binder with compaction pressure variations 30, 40, and 50 bar. Characteristics of moisture content and volatile content decreased while ash content, fixed carbon content, and heating value increased with increasing residence time. Characteristics of density increased with increasing compaction pressure. Characteristics of proximate and heating value increased while density properties of bio pellet decreased with the addition of bintaro fruit as co-firing.
An Ecolinguistics Analysis of Indonesian Pop Music Lyrics on Environment:A Review of Two Nature Songs
Authors: Jismulatif  , Dahnilsyah  , Sinaga Mangatur
Published: November 2020

This is an ecolinguistic study of two Indonesian pop song lyrics which bear the themes on 'Nature'. It seeks to deeply analyze the basic messages behind the lyrics and how they describe the natural world which is generally described by Stibbe's in his article entitled ‘stories we live by’ that accounts for the relationship between humans and nature. The two selected songs are pohon untuk kehidupan (Tree for life) by Iwan Fals (2012) and lestari alamku (My everlasting nature) by Gombloh (1982). In particular, the use of metaphors in this song has important meanings as social criticism and humanity. The problem in this study was answered and described using a descriptive-qualitative approach. The results showed that the song pohon kehidupan's lyrics consist of 5 ontological metaphors and 3 structural metaphors. The Lestari Alamku’s lyrics consist of 5 ontological metaphors and 1 structural metaphor. These metaphors are social critism toward the society on the importan of natue in the life of human that should be preserved and sustained. The whole meaning of these metaphors shows a strong relationship towards between language and environment.
San Vitale’s Aural Networks in the Context of Pandemic and Transformation
Authors: Knight D J , Tronchin L
Published: November 2020

We wish to offer a survey of our published work on the Archaeoacoustics of the sixth century basilica of San Vitale, Ravenna, in the context of the contemporary pandemic known as the plague of Justinian. The ordered sequence of reverberant aural encounters at San Vitale is posited as a method of spiritual and physical cleansing. The original metrical verse in the atrium of San Vitale refers to the church as an arcem (stronghold) from the cuntagia mundi (contagions of the world), a sentiment contemporaneous with the continued effects of the plague. An allegorical route-way from Christ’s nativity to resurrection signifies transformation. The resemblance of San Vitale’s interior to Constantinople’s mese processional urban route and the two-story colonnaded frontages enclosing the Forum of Constantine - an intriguing example of an indoor acoustic space designed as a compressed network of recognizable signifiers echoing a specific outdoor urban space elsewhere.
Environmental Communication Model of Farmer Community in Peatlands Ecotourism Development
Authors: Yasir Yasir
Published: November 2020

This study aims to find out the environmental communication model of farmer communities in overcoming the problem of peatland fires through ecotourism management in Bukit Batu sub-district, Bengkalis-Indonensia. This research uses the study of communication ethnoecology, by understanding the problem directly and participating. The results of this study indicate that environmental communication through community-based tourism can preserve the peatland environment in a sustainable manner. Communities have their own interpretations and awareness of the meaning of environmental symbols that are around them. Community environmental communication for the development of peat arboretum ecotourism was built in conjunction with Pertamina's CSR through community empowerment in overcoming forest fires with the Kampung Gambut Berdikari program. Pertamina's CSR strengthens community understanding in increasing public awareness of the problem of peat forest fires and the land managment. Peat arboretum as ecotourism and educational tour is useful to convey messages to change understanding, perspective, and influence people's behavior as well as visitors. The model of environmental communication for the development of peat ecotourism by the community is based on friendship, deliberation and mutual assistance as a form of community local wisdom.
Identifying Students’ Inner Structure of Poetry with Environment Themes
Authors: Mulyani E A , Putra E D , Alpusari M , Hermita N
Published: November 2020

This research purpose to identify inner structure of poetry by PGSD students in terms of theme, tone, feeling and mandate. This type of research is qualitative research, the method used in this research is descriptive qualitative. The data used in this study was written data in the form of poems text document by 2019 PGSD students with environment themes. The results showed that in general these poems have the same theme that is telling the state of the environment. For the tone of the poem pinned in the poem indicates about the condition of the surrounding environment that is exposed to water, soil and air pollution which is a result of the results of fires, floods, landslides and others. This can also be observed from the poems that have been identified that generally have almost the same taste about disappointment and sadness. Other reviews made about the taste in the poem are gratitude, joy, disappointment, sadness, and anger. The last part of the analysis of the inner structure of poem is the mandate. The general mandate of the poem that has been analyzed is the mandate that human beings are obliged to maintain and preserve the surrounding environment for further survival.
Major Challenges in Developing Marine Spatial Planing in Bangka Belitung Island Province
Authors: Sujadmi  , Murtasidin Bahjatul
Published: November 2020

Bangka Belitung is one of the provinces that is characterized by the largest archipelago in Indonesia, having a very wide coastal area with a variety of natural resources contained in it. This raises serious problems, especially conflicts in accessing to use that have an impact on ecological conditions. While the Law mandates the use of marine and coastal resources must be sustainable. There is no other choice that must be made in the aspects of development planning policies other than sea spatial planning. This study aims to analyze the major challenges in marine spatial planning, as well as evaluate the sea spatial planning process undertaken. The result of this study is expected to be a recommendation for stakeholders in evaluating and at the same time improving the quality of the sea spatial planning process so that it can be carried out properly and sustainably. The approach in this study is qualitative. The results of this study indicate that sea spatial planning in Bangka Belitung has become an arena for conflict, power struggles, and the right of access to use. The reason is that in the same area, there are fishery resources and contain mineral reserves that are technically and economically potential to be mined. Therefore, the author recommends that there is a need for government commitment through a clear framework and optimal stakeholder involvement.
Prospect of Natural Ecotourism Cluster Around the Great Mosque Islamaic Centre of Rokan Hulu, Riau Province, Indonesia.
Authors: Amri Khairul , Harto Syafri , Jupendri  , Effendi Irwan
Published: November 2020

Ecotourism is an environmentally activities of seeing, watching, studying, admiring nature, flora and fauna, socio-cultural local ethnic,take responsibility for the preservation of the surrounding environment by involving local residents. Rokan Hulu is a regency in Riau Province, with population livelihoods in agriculture 52.42%, industry 11.49%, trade 7.14% and other sectors 28.95%. Ecotourism is not yet the economic backbone of this area. But this area has potential in that direction. This study aimed to analyse the prospect of some natural ecotourism objects located within reach of the iconic Great Mosque Islamic Centre (GMIC) Rokan Hulu. Using the survey method, the respondents were selected through a purposive sampling method. Respondents were local community, tourists, tourism businesses and other stakeholders. The data obtained was associated with the concept of 4A (attraction, amenity, accessibility, and ancillary service). Followed by a SWOT analysis, WTA (willing to accept) and WTP (willing to pay), and a descriptive analysis of economic potential. At least there were 3 ecotourism objects within the reach of GMIC of Rokan Hulu, namely Sipogas Lake Ecotourism, Hapanasan Hot Spring and Huta Sikapir Cave Ecotourism. Based on SWOT, WTA and WTP analysis, it was concluded that the objects have the economic potential to be developed as a natural ecotourism. It is recommended that the GMIC be the main icon tourism in this regency and while some other supporting tourism objects will naturally be developed.
Natural Ecotourism Objects in Rokan Hulu Regency, Riau Province, Indonesia.
Authors: Jupendri  , Amri Khairul , Effendi Irwan
Published: November 2020

Ecotourism is environmentally friendly tourism with the activities of watching, studying, admiring nature, flora and fauna, socio-cultural local ethnicity, and fostering the preservation of the natural environment by involving local residents. Rokan Hulu is a regency in Riau Province, Indonesia. Ecotourism is not a major sector in this area, however, this regency has some natural locations that might be developed. This study aimed to identify and analysed natural ecotourism objects in this area. The locations and respondents was nominated by using purposive sampling method. Respondents consisted of local people, tourists, tourism businesses, and stakeholders. The collected data was associated with the concept of 4A (attraction, amenity, accessibility, and ancillary service) and SWOT (strength, weakness, opportunity and threat) analysed, WTA (willing to accept) and WTP (willing to pay), and descriptive potential analysis natural ecotourism economy. Some ecotourism objects in this area were identified, namely Aek Martua Waterfall Ecourism, Batu Gajah Ecourism, Huta Sikapir Cave Ecotourism, and Hapanasan Natural Hot Springs. It is recommended to improve facilities and infrastructure access to each location and the main object of natural ecotourism is managed by professionals by involving local communities.
Strength and Durability of Six Fast-Growing Timber Against Marine Biota as an Alternative to Hull Materials
Authors: Fakhri  , Suprayogi Imam , Siregar Yusni Ikhwan , Sujianto
Published: November 2020

Ship hulls are vulnerable to attack by marine animals (barnacles and sea worms). The current scarcity of natural forest wood supplies has a negative impact on the fulfillment of good quality wood raw materials for wooden hull, especially types of Meranti batu (Shorea platyclados). The research aims to test the strength and durability of six fast-growing wood species as an alternative material for ship hulls.The method used is a laboratory test and field test.Flexural strength test based on SNI ISO 16978-2010, wood durability test based on SNI 01-7207-2006. The field test was carried out by submerging the specimens for six months in sea water, Kubu District, Rokan Hilir, Riau Province, Indonesia. Six types of wood tested were: Acacia (Acacia Mangium), Geronggang (Cratoxylon arborencens), Trembesi (Samanea saman), Eucalyptus (Eucalyptus), Mahang (Macaranga gigantea Mull.Arg), and Jabon (Anthocephalus cadamba (Miq)). Sea water immersion test results obtained that the wood Jabon, Acacia Mangium, Ekaliptus, and Geronggang not significantly different. The results of research on the flexural strength, Acacia Mangium wood and eucalyptus have strength equivalent to Meranti batu wood, so that it has the potential as an alternative material for hull material.
Connotative and Denotative Meaning of a Poem Entitled: ‘Membaca Tanda-Tanda’ on Environmental Devastation: An Ecocriticism
Authors: Dahnilsyah
Published: November 2020

The dependence of human beings on the natural environment for continuance and prosperity is by nature, an accomplished fact. This study sheds the light on the role of a poem in responding to an environmental destruction. It applies a qualitative content analysis method which place the emphasis on the recording, grouping, analysing, describing, and summarizing. It is demonstrated here that the poet conveys the criticism using both connotative and denotative meaning to deliver messages. Taufik Islamail here, had appealed to the government and society that it is so urgent to preserve our nature from natural disaster as there has been a lot of irregularities and misbehaviour in exploiting the natural resources that may cause environment devastation and natural disaster. It implicitly reveal that the power of languages in a poem enable to develop sympathy and empathy of human beings to actively get involved in natural conservation
Using a Church as a Temporary Auditorium. Acoustical Design of S. Domenico of Imola
Authors: Merli F , Bevilacqua A
Published: November 2020

In Europe, many of the ancient buildings, especially sacred architecture, are subject to renovation projects by converting their initial occupation type for temporary exposition. In particular, the demand for assisting to live musical performance is increased considerably in Italy because of the missing of places dedicated to the performing arts. As such, one of the churches of Imola (i.e. San Domenico), located approximately 30 Km far from Bologna, has been requested by citizens to be adapted into an auditorium when necessary. Based on needs expressed by the local population, this paper recommends one of the possibilities of how the acoustical design can be applied to the church in order to adjust the main volume to the realization of transient musical venues, cancelling any undesirable reflections that can lower the quality perception of sound. The actual acoustics has been adapted in order to reach both speech and musical intelligibility, especially focused on sacred music style. Both measured and simulated results have been compared determining the choice of the proposed acoustical solutions in terms of type of finishes and surface area to be covered by the added materials. The suitable treatments in consideration include absorbing wooden panels, curtains and fabric wrap.
The Potential Forest Ecotourism in Suligi Hill, Riau Province, Indonesia.
Authors: Harahap Irawan , Effendi Irwan
Published: November 2020

This study aimed to identify and analysed forest ecotourism objects in Suligi Hill, Kecamatan Kabun, Rokan Hulu. Indonesia. The locations and respondents was nominated by using purposive sampling method. Respondents consisted of local people, tourists, tourism businesses, and stakeholders. The collected data was associated with the concept of 4A (attraction, amenity, accessibility, and ancillary service) and SWOT (strength, weakness, opportunity and threat) analysed, WTA (willing to accept) and WTP (willing to pay), and descriptive potential analysis ecotourism economy. Ecotourism in Suligi Hill categorised as adventure, conservation and education tourism. Some ecotourism objects were named as; Suligi Hill, Puti Maifat Peak, Ranah Peak, Sikubin Waterfall, Dayang Baso Waterfall, Tirtan Waterfall, Macan Cave, and Garuda Cave. Suligi Hill is potential to develop as forest ecotourism area. It is necessary to improve the facilities and infrastructure access to each place of the ecotourism object. Ecotourism management must involve professionals as the main actors and then supported by local ecotourism actors.
Encouraging Community-Driven Approach in Developing Koto Sentajo
Authors: Sulistyani Andri , Firzal Yohannes , Yesicha Chelsy , Safri  , Sari Genny Gustina
Published: November 2020

Tourism village is an alternative solution to accelerating rural economy which is friendly to the environment and micro-economy. In the tourist village, the development meaning is from the community, by the community, and for the community. However, the study of tourism village development has specificities that cannot be equated because each tourist village has its characteristics. The policies that are applied must refer to the fundamental character of customs and the potential of available tourism resources. This study seeks to discuss a community-driven approach as an initiative to develop a tourist village in Koto Sentajo. The unique characteristics of this village as a state-based traditional village under ninik mamak provide a distinctive style in fostering tourism village.
Evaluation the Effectiveness Implementation of the Weather Modification Technology for Mitigating Peatland Fires
Authors: Sandhyavitri Ari , Rahmi Ilvi , Widodo Heru , Husaini Rizki Ramadhan
Published: November 2020

The objective of this article is to evaluate the effectiveness implementation of the weather modification technology (WMT) for mitigating peatland fire disasters in Riau Province, Indonesia. The implementation of this WMT in Indonesia has been relatively new and challenging as this cutting-edge technology may increase the precipitation rates and therefore, it may reduce the risk of peat fire hazards in the huge massive areas. The Riau province has experienced serious peatland fire disasters from the period of 2014 to 2016. The evaluation of WMT in this article was focused on four regions within Riau encompassing Indragiri Hilir regency, Meranti Island, Pelalawan, and Siak. The Tropical Rainfall Measuring Mission (TRMM) satellite data were used to calculate the precipitation rates. The method applied to evaluating the effectiveness of WMT was the Target Only Method (TOM). This method calculated the precipitation rates during the WMT period, which is compared to the historical precipitation data in a similar period. The total duration of a 3-year WMT implementation was 380 days, and the results were considered successful as an increase of precipitation rate (PCH) = 2.09 > 1.00. Hence, there was an increase in the average of precipitation rate during WMT period of 2014-2016 in Riau.
Development of a Circular Motion Experimental Device Using an Arduino Uno Microcontroller
Authors: Azizahwati Azizahwati , Rahmad M. , Hidayat Fahrun
Published: November 2020

The purpose of this research is to build a circular motion experimental device using the Arduino Uno microcontroller. This study uses the ADDIE model; Analyze, design, develop, implement and evaluate. This research was conducted until the develop stage. The research instrument was a validation sheet that was assessed by an expert. The data obtained were analyzed descriptively. The results obtained indicate that the experimental tool and manual for its use are declared valid by experts. This experimental tool can show a linear relationship between the angular velocity and the frequency of the dish with a relative error of 0.07%. The resulting experimental device is also capable of measuring frequencies and angular velocities for various discs.
Imaging Analysis of Thresholding Image Filtering, Brain Abnormalities Morphology, and Dose Report CT Scan Records
Authors: Meyzia Bunga , Hamdi Muhammad , Saktioto  , Amelia Rina
Published: November 2020

The abnormalities identified in the brain have been widely understood to be a form of disorder but displaying the data medically has been a problem. This study, therefore, proposes an imaging analysis to comprehensively investigate the thresholding method, morphology, and the medical imaging simulation approach using the CT scan. The focus was to identify the image of abnormalities in the brain starting with the illumination of the patient's head using X-rays and enhancing the image results. Moreover, irradiation results are also in the form of an image and output dose displayed on the Digital Imaging and Communication in Medicine using the radiology monitor. Thresholding methods and morphological operations are useful for determining the geometry of the area, depth, and volume of the brain using PHP programming. Furthermore, numerical calculations were applied to determine the value of the effective dose while statistical samples were used for 30 years and above. The results, therefore, showed the largest volume to be at the greatest effective dose value. Meanwhile, some data were not detected due to the abnormalities in the geometry of the brain object network, thereby, showing no significant difference in intensity values.
Nickel Doping in ZnO Nanorod Synthesis: Effects of Nickel Concentration on Physical Properties of the Nanorod
Authors: Iwantono  , Hutagaol Catherine , Saputrina Truly Theresia , Awitdrus
Published: November 2020

ZnO nanorods have successfully been grown on the surface of FTO. The growth of ZnO nanorods was carried out using the seed-mediated growth method, whereas the Ni doping was carried at different concentrations. The effect of nickel doping on ZnO nanorods was observed using field emission scanning electron microscope (FESEM), UV-Vis spectroscopy, and X rays diffraction (XRD). ZnO nanorods having hexagonal shape were shown by FESEM images, and overlap of ZnOnanorods forming a nanoflowers with wider rod size. UV-Vis spectra showed that strong absorption occurred at a wavelength of 390-300 nm, the highest intensity of absorption was resulted by 15mM sample. The energy gap of the sample decreased as increasing its concentration. XRD pattern of the samples showed the diffraction peaks occurred at angles of 2θ = 31.72°, 34.45°, 36.20°, 47.50°, and 56.57° that represented the crystal plane orientation of (100), (002), (101), (102), and (110).
Interpretation Intrusion of Seawater Using Geoelectricity and Measurement of The Well Water Salinity in Kijang Island, Indragiri Hilir District
Authors: Wijaya Dedi , Juandi Muhammad , Farma Rakhmawati
Published: November 2020

Investigating seawater intrusion is very important because it covers human life. Generally, people living in coastal areas have difficulty obtaining freshwater. The government needs to help the coastal community by making the well water. The physical parameter that affects the quality of freshwater in coastal areas is salinity. The purpose of this study is to analyze the intrusion of seawater in underground water systems in coastal areas. The research method used is the measurement of geoelectricity and salinity of the well water. The results showed that groundwater aquifers that can be a source of fresh water are at depths ranging from 72.6 meters to 168.6 m. This research shows that the salinity value of the well water is 4 ppt, so it can be classified as freshwater.
Magnetic Susceptibility and Heavy Metal Content of Palm Oil Plantations Soil as a Function of its Depth
Authors: Sinuraya Salomo , Amiruddin Erwin , Hutauruk Marisayani , Fajri Naldi Rahmat
Published: November 2020

The magnetic susceptibility and heavy metal content of oil palm plantations soil has been determined. The magnetic particles of the soil were separated from non-magnetic particles using neodymium iron boron (NdFeB) magnet. The magnetic induction of the soil was measured using Pasco Probe PS-2162. The magnetic susceptibility value on the surface of the oil palm plantation soil varies between (685.99 to 1081.96) × 10 −5. This value is higher than the reference soil magnetic susceptibility that is 457.30 × 10 −5. The magnetic susceptibility values decrease as soil depth increases and at a depth of 40 cm the magnetic susceptibility value is close to the value of reference soil magnetic susceptibility. The X-Ray Fluorescence Spectroscopy (XRF) test result showed that the plantation soil has been contaminated with Cr, Fe, Ti, Sr, and V, this is in accordance with the magnetic susceptibility value of the plantation soil surface which is higher than that of the reference soil.
Activated Carbon Monolith Derived from Coconut Husk Fiber as Electrode Material for Supercapacitor Energy Storage
Authors: Taer Erman , Naipospos Verdy Manoto , Taslim Rika , Agustino  , Apriwandi
Published: November 2020

Biomass-derived porous activated carbon materials have been receiving considerable attention in energy-storage devices especially for supercapacitor due to abundant, renewable, sustainable, and cost-effective production. In this study, porous activated carbon material with monolithic form has been successfully prepared from coconut husk fiber through one-stage integrated pyrolysis and ZnCl2 impregnation. Different physical activation temperature is the main focus in this study including 750, 800, 850, and 900 °C. The reduction of monolith dimensions such as mass, diameter, thickness and density have been reviewed as physical properties. Furthermore, the supercapacitor cells were performed with cyclic voltammetry t 1 M H2SO4 aqueous electrolyte at low scan rate of 1 mV s−1. The supercapacitor device based on the CFM-800 samples exhibited highest specific capacitance of 216 F g−1. This sample also performed a promising performance with an energy density of 30.00 Whkg−1 and a high power density of 108.57 Wkg−1. These results demonstrate that the coconut husk fiberhas been a high potential to as raw material for porous activated carbon monolith through low cost, vehicle and short-time processing with high-performance supercapacitors energy storage.