bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of Chronic Exposure to Particulate Air Pollution on Cardiovascular System: An Experimental Study Using Mice Models
Authors: Fauzie A K , Venkataramana G V 
Published: December 2019

Abstract
Our study investigated the chronic effects of short-term and medium-term exposure to urban particulate matter (PM) on cardiovascular system using murine models. Three-week-old Swiss albino mice (Mus musculus) were exposed to vehicular PM for five days (5D) and three months (3M), and some of them were kept in laboratory as control. Blood samples were analyzed using an automated hematological analyzer and cardiac tissues followed histopathological analysis to determine myocardial infarction as well as fibrosis and elastosis of coronary arteries. Results showed depletions (p < 0.1) in packed cell volume, red blood cells, and neutrophils after 3M of PM exposure. The density of neutrophils infiltrated in the myocardium was increased after 5D and 3M of PM exposure (p < 0.05). Higher thickness of arteriolar walls were found in almost all sized arterioles after 3M of PM exposure (p < 0.05) indicating higher content of collagen and elastic fibers, but no evidence of such after 5D of PM exposure. All parameters were compared to the control condition. We conclude that exposure to PM air pollution significantly altered cardiovascular system in animal models signaling that their blood and organs were badly injured.
The Impact of Making Canal Blocking on Growth Red Chili Plant Production (Capsicum Annuum L.)
Authors: Hapsoh  , Wawan  , Dini I R , Okendri B 
Published: December 2019

Abstract
Increased chili production continues to meet the demand for chili in an area. This study aimed to determining the importance of the influence of making canal blocking on water availability to increase growth and production of red chili plants. This study used a survey method, the method consisted of several stages including determining the location of sampling taken by purposive sampling, namely deliberate sampling with the required sample requirements. The results obtained from interviews and filling out the questionnaire stated that the water source they found for their plant water needs was the water available on the canal. The canal which was around the land was a secondary and tertiary canal, while the primary canal was located quite far approximately 300-500 m which was located around the edge of the road. The result of the analysis showed that making canal blocking in an effort to increase the availability of water there was no significant difference in the parameters of flowering and harvest age. Making canal blocking could increase plant canopy width, plant height, fruit weight/plant weight and fruit weight/m2, and canal blocking could increase water availability for plants so as to increase production to 20 tons.ha−1.
Potential Antibacterial Activity of Endophytic Fungi Penicillium sp. and Trichoderma sp. Derived From Mangrove Ceriops Tagal (Perr.) C.B.Robb and Bruguiera sp
Authors: Haryani Yuli , Hilma Rahmiwati , Delfira Noviza , Martalinda Tetty , Puspita Fifi , Friska Amelia , Juwita Dita , Farniga Analdi , Ardi Fri 
Published: December 2019

Abstract
This study aims to isolate endophytic fungi from the roots of mangrove from Riau Province’s Mangrove Forest and to screen some isolates with ability to inhibit the growth of pathogenic bacteria. A total of 28 endophytic fungi have been isolated from mangrove samples identified as Bruguiera sp. and Ceriops tagal (Perr.) C.B.Rob. Out of 28 isolates, 17 isolates (60,71%) were isolated from direct plating of sterile segment of root samples, while 11 isolates (39,28%) were isolated from suspension of grinded sterile segment in aliquot sterile sodium chloride. The potency of all isolated endophytic fungi to produce antibacterial agents were identified by doing antagonistic study against Escherichia coli, Staphylococcus aereus and Vibrio alginolyticus. The results showed that the highest antibacterial activity was produced by the isolates of C7B, B1C, C4E, and C4D with clear zones diameter of 17.91 ± 0.84 mm; 17.78 ± 0.83 mm; 17.66 ± 0.83 mm; 16.72 ± 1.15 mm, and 13.65 ± 0.27 mm, respectively. Based on macroscopic and microscopic analysis, those fungal isolates were identified as Penicillium sp. (C7B) and Trichoderma sp. (B1C, C4E, C4D).
Bioplastic Properties of Sago-PVA Starch with Glycerol and Sorbitol Plasticizers
Authors: Lusiana SW , Putri D , Nurazizah Ida Z , Bahruddin  
Published: December 2019

Abstract
This study describes the making of sago starch bioplastics using glycerol and sorbitol plasticizers with the addition of PVA and chitosan filler. It purposes to compare the effect between the addition of glycerol and sorbitol plasticizers. Bioplastic samples of sago-PVA starch have been made from a mixture of sago starch and chitosan solution that had been dissolved with acetic acid, glycerol/sorbitol plasticizer, and PVA was printed and left in the air for 24 hours, then dried in the oven for 12 hours. Testing the mechanical properties of tensile strength refers to ASTM D882 then tearing strength testing based on method C in JIS K 7128 standard. In addition to testing mechanical properties, morphological tests were also referred to as the JSM-6390A standard and biodegradability tests were carried out qualitatively with DIN EN ISO standards 846, and this Water Uptake test was referred to the ASTM-D570-98 standard. This study found that the glycerol plasticizers have a better value than other comparable materials in biodegradation testing with a value of 82.38%, However, in tensile strength test, sorbitol has better value than other material, namely with the best tensile strength value of 16.12 MPa, 142.05% in elongation, tear strength of 12,729 kgf/mm, and water uptake value of 10.34%.
Zeolite Na-P1 Derived from Palm Oil Mill Fly Ash: Synthesis and Characterization
Authors: Davina V , Utama P S , Saputra E , Bahri S 
Published: December 2019

Abstract
Palm oil mill fly ash is the solid waste of palm oil industry having silica content around 39 %. Synthetic Amorphous Silica (SAS) can be sinthesized from the fly ash by alkaline extraction method combine with sol-gel precipitation. In this research, the SAS was used as the raw material for zeolite Na-P1 synthesis by hydrothermal process. The synthesis process was done in stainless steel autoclave and the operating conditions were: pressure of 200 kPa, temperature of 120 °C and time of 8 hours. The aluminium source was Al2O3, the Si/Al ratio used were 5, 8 and 11 while the sodium hydroxide concentration were 1, 2 and 3 N. The zeolite obtained was characterized using XRD and the diffraction pattern was compared to the zeolite Na-P1 from other references.
The Perception of the Pekanbaru City Resident on Household Pesticides
Authors: Sutikno Agus , Rasyad Aslim , Amin Bintal , Mahatma dan Radit 
Published: December 2019

Abstract
The use of household pesticides depends on three important factors, including the effectiveness of active ingredients, application techniques, and the effects towards users. Therefore, there is a necessity for knowledge of pests and the application in order to minimize the danger posed. A person’s ability to understand various sources of information is influenced by their level of education. Facts regarding household pesticides are usually acquired from TV commercials as well as community experiences. This descriptive study was carried out by describing the relationship between the behavior of household occupants and the use of pesticides in controlling settlement pests, as well as explaining the relationship between the observed variables. The research population include residents that live in Pekanbaru City, specifically in the Districts of Tenayan Raya, Sail and Pekanbaru City. A determination of samples is carried out intentionally (purposive) with multistage sampling techniques (gradual sampling). Three factors determined the assessment of these households: clean, medium or dirty. The results of this study found that the resident of Pekanbaru City still considered the use of pesticides as harmless to their health and families, even though they knew of the toxicity and danger. Communities have a great desire to reduce the use of pesticides and find alternative methods for pest control.
Between Natural Tourism, the Booming of Laskar Pelangi Film, and the Image of Environmental Damage: Measuring the Perception of Regional Tourist on Bangka Belitung Tourism
Authors: Ibrahim I , Zukhri N , Rendy R 
Published: December 2019

AbstractImage, impression, and tourist information sources are three important things to be explored in tourism development. Bangka Belitung which in the last few years has been trying to promote the economic sector based on post-tin and plantation tourism dealing with preparedness in management. This study wants to find out how tourists perceive Bangka Belitung, related to the tourist destinations, general views of tourists, and what issues are important to be considered by stakeholders. The study was designed to measure the perceptions of tourists from outside the area in looking at Bangka Belitung on the tourist side based on a quantitative design with a survey model. This research found that visitor arrivals to Bangka Belitung are basically planned as holiday trips from the beginning, not incidental trips. Another thing that was found is that the initial negative impression that emerged in general was environmental damage and the impression of a quiet area. The study also found that information sources for tourists in general are still conventionally based, namely relying on information from friends or family, not yet using a social media or technology base. It was also found the fact that culinary and historical visits have not become an important magnet in the planning of tourists’ trips. In the end, this study found the tendency to visit tourist destinations based on natural beauty, but it is somewhat different from Bangka, tourists in Belitung tend to visit more varied places as an implication of the popular Laskar Pelangi Film. The study concluded that at least the issues that were important as weaknesses were still felt by visitors, including limited transportation, facilities at tourist sites visited that were still minimal, local government support that was considered not optimal, and environmental damage that was considered to be potential for disrupting tourism.
Current Situation of Wastewater Treatment Plant for Sewage in Batam City
Authors: Aulia Sari Yusra , Pamadi Mulia 
Published: December 2019

Abstract
The aim of this research was conducted to identify the current situations of wastewater treatment plant for sewage in Batam City. This research uses descriptive qualitative methods to describe and analyze existing phenomena and real situations in the field. Descriptive method was chosen because the research conducted was relating to ongoing activities. The research instrument is the researcher, which is done through observation, interviews, and documentation. The results of this research are that the WWTP project is the right solution for Batam City in waste management, especially sewage. Batam is a pilot because there are not many cities that use integrated sanitation processing systems in Indonesia. WWTP provides benefits for environmental problems with natural and technological integration. Thus, the benefits of this research are references for researchers who want to discuss WWTP and are expected to help Batam authorities (BP) to develop the WWTP Project. The impact of this research in the field of civil engineering is the application of the Sustainable Urban Water and Sanitation Management.
Increasing the Environment Feel in Learning through the Double S Application
Authors: Islami Annisa Permata , Novitri Novitri , Syarfi Muhammad , Masyhur Masyhur , Afrianto Afrianto 
Published: December 2019

Abstract
In this era of globalization, English has become the second language for some non-English speaking countries. But in Indonesia, English is actually being a foreign language. This is because learning English in junior high school is monotonous and boring. So students’ interest in learning is reduced. The purpose of this study is to create a media for learning English so that it can increase interest the environment feel in learning and trigger students’ enthusiasm in learning English subjects. The learning media is spinning wheel and a jumbo puzzle with picture of the Siak Palace. This learning media was tested limited to students of Pekanbaru Az-Zuhra Islamic Middle School. Students were divided into 3 groups. The group representatives would spin the spinning wheel which contained the difficulty level of the quiz and the group would discuss to answer the quiz about the material. After that, the group with the correct answers would paste several puzzles on the board according to the score that they obtained from the previous quiz. From the results of this limited test, based on questionnaires given after learning, it appears that there is an increase in interest and enthusiasm of students in learning English through this media. This learning media in general can build interest and increase student motivation in learning English and can build skills to work together in learning groups.
Study of Microbial Air Quality at Surrounding Food and Leaves Waste Composting Facility (Case Study: Composting Facility – Faculty of Engineering, Universitas Indonesia)
Authors: Putri L V Y , Kristanto G A , Danumihardja I G 
Published: December 2019

Abstract
Composting process can increase bioaerosol concentrations that can cause health effect on human. The objectives of this research are to study bioaersol concentration and temperature and humidity factors bioaerosol concentration regarding food and leaves waste composting in Composting Facility – Faculty of Engineering. This study found that bioaerosol concentration of gram-positive bacteria, gram-negative bacteria, and fungi on 1st sampling location about 123,7 to 4699,6 CFU/m3, 0 to 17,67 CFU/m3, and 212,0 to 1484,1 CFU/m3, on 2nd sampling location about 141,3 to 2402,8 CFU/m3, 0 CFU/m3, and 300,4 to 1042,4 CFU/m3, and on 3rd sampling location about 17,7 to 2102,5 CFU/m3, 0 CFU/m3, and 53,0 to 1802,1 CFU/m3. This concentration was higher than related standard. Therefore, we need to do some handing technique to reduce bioaerosol exposure to human.
Characterization of Sludge Generated from Acid Mine Drainage Treatment Plants
Authors: Amanda N. , Moersidik S. S. 
Published: December 2019

Abstract
One of the wastes generated from coal mining area is the voluminous sludge, laden of metals. This sludge comes as precipitate which is produced from acid mine drainage active treatment ponds and always been disposed to the landfill. Limestone is one of the typical pH neutralization agents which is often used to bind the metal content of acid mine drainage in active treatment and will be settled at the bottom of the settling ponds. The goal of this study is to determine the potential utilization of acid mine drainage sludge in order to reduce the environmental problem caused by sludge accumulation so that this could become a valuable material. In this study, physical and chemical characterization from the sludge in solid form was carried out by laboratory analysis using SEM-EDS to see surface morphology, X-Ray Diffraction for mineralogy analysis, the chemical composition was done by using X-Ray Fluorescence and also BET method to see the surface area of the sample. The results of the characterization have shown that acid mine drainage sludge was very promising to be utilized as adsorbent material for removing pollutant in wastewater and further research is needed for the application to the wastewater technology.
Improved Peatlands Potential for Agricultural Purposes to Support Sustainable Development in Bengkalis District, Riau Province, Indonesia
Authors: Syahza Almasdi , Bakce Djaimi , Irianti Mitri 
Published: December 2019

Abstract
Bengkalis District in Riau Province, Indonesia, has potential peatlands covering 647,962.26 ha or 76.05% of its total land area. Peatlands not only have a function as direct life support, especially by providing area for agricultural purposes, but also ecological functions, such as flood and global climate control. Peatland areas will be arduous to restore if damaged. This condition certainly has negative impacts on the socio-economic aspects of the people living in the surrounding areas in particular. Sustaining the function of peatlands for the ecosystems essentially requires a detailed review of spatial feasibility and socio-economic impacts of peat swamp reclamation. Plants that have been cultivated on peatlands by the community are palm oil, rubber, coconut, coffee, and areca catechu (pinang). On wetlands, in particular, people do sago farming. One of the problems encountered in the utilization of peatlands is the low level of community participation in the development of peatland management policies. As a result, the implementation of these policies is still conflicting, prone to dispute and hard to do.
Production and Characterization of Paper from Pineapple Leaves and Sugarcane Bagasse Pulp
Authors: Evelyn  , Komalasari  , Adegustias R A , Margaretha E A , Simanjuntak M S 
Published: December 2019

Abstract
Paper is the final product resulted from compression of fiber suspension of cellulose pulp, which is derived from wood or non-woody material. In this study, paper was made from mixture of pineapple leaves and sugarcane bagasse pulp (P:S, 100:0%, 80:20%, 60:40%, 40:60%, 20:80%, and 0:100%) at varying cooking liquor or NaOH concentration (1.5% and 3%) using semi-mechanical soda pulping method. Pulp characterisation (kappa number, tensile and tearing strength) was further carried out to ensure a stable pulp and paper quality. Results showed that the highest tensile strength of 6,709 kN was obtained at pineapple leaves and sugarcane bagasse pulp composition of 100:0% and NaOH 3%, whereas the highest tearing strength (1730,13 mN) was observed at the P:S of 40:60% with similar concentration of NaOH. The lowest kappa number (6,182) was also obtained at P:S of 0:100% and 3% NaOH. The pulp characterisation values have fullfil SNI No. 6519:2016 quality standard for plastic laminated paper.
Initializing the Fuzzy C-Means Cluster Center With Particle Swarm Optimization for Sentiment Clustering
Authors: Siringoringo Rimbun , Jamaluddin Jamaluddin 
Published: December 2019

Abstract
Fuzzy C-Means (FCM) is one of the best-known clustering algorithms, however, FCM is significantly sensitive to the initial cluster center values and easily trapped in a local optimum. To overcome this problem, this study proposes and improved FCM with Particle Swarm Optimization (PSO) algorithm for high dimensional and unstructured sentiment clustering. PSO is applied for the determination of better cluster center initials. The results showed that FCM-PSO can provide better performance compared to the conventional FCM in terms of Rand Index, F-measure and Objective Function Values (OFV). The better OFV value indicates that FCM-PSO requires faster convergence time and better noise handling.
The Probabilistic Power Spectral Densities for Combination of Broadband Seismic Network
Authors: Saragih Naikson Fainder , Dumayanti Imelda Sri , Situmorang Alfonsus , Naibaho Jimmy Febrinus , Sinambela Marzuki 
Published: December 2019

Abstract
The time series approach is commonly used to access the estimation of the power spectral densities of waveform data. This paper is concerned with the presentation of the assessment of waveform noise to measure the probability density function be done internally, we used the metadata from an inventory, a parser instance of DNP (Denpasar, Bali, Indonesia), IGBI (Ingas, Bali, Indonesia), and PLAI (Plampang, NTB, Indonesia) from BMKG IA-Networks and calculations are based on the routine used by McNamara Model. The consistency of the spectra is presented the DNP, IGBI, and PLAI network to verify the quality of data and also acts as a test performance broadband network to the time taken by the broadband network in the field and analysis the Lombok earthquake in 2018.
Data Mining Using Clustering Methods to Identify The Type of Lung Disease (Case Study: Siti Hajar Hospital)
Authors: Priambodo Rifqi Agung , Sitompul Opim S. , Zarlis Muhammad 
Published: December 2019

Abstract
In the process of grouping types of lung disease, doctors and staff Siti Hajar hospital experience the various obstacles encountered, including difficulties in grouping the data types of lung disease. This deployment planning analysis will help the hospital in analyzing data classification type of lung disease. This method of making use of data collection by taking data at the hospital.
Business Value Assessment for Global Service Provider Industry: Opportunities and Solution
Authors: Haris D M. Kamal , Asti Amalia N.F. , Lubis Muharman 
Published: December 2019

Abstract
The problem of estimating the business value of the information system lies in heart of business process and function, which are the organization architecture that it is a very complex work to be dealt with. Therefore, there are a large number of aspects such as the trend, regulation, etc. that need to be evaluated to get the appropriate results, although in order to reduce investment and operation costs, these aspects cannot be neglected to avoid the result contain high degree of uncertainty. This paper presents results in assessing the business value of IT projects in global service provider industries, with the objective to support and provide more reliable and high quality information on potential futures contracts with relatively low investigation costs. This method contains four architectural frameworks consisting of business, data, applications and technology architecture.
Assessment of Team Based Learning: The Use of Student Centred Learning for Interaction Design Class
Authors: Lubis Muharman , Azizah Anik Hanifatul , Fauzi Rahmat 
Published: December 2019

Abstract
Student-centred learning has been defined as small approach to improve learning objective through variety of process where students not only choose what to learn, but how and why. Moreover, the essence of the learning environment is the responsibility and activities of students, in contrast to the focus on coach control and the scope of academic content in the teaching with the traditional teaching. In this case, the use of Team based learning can take into account the aspects of the time of tasks termination and student activities to learn the subject content in the maximum way to enrich the other concepts outside the learning module. This study investigate the utilization of Team Based Learning in the subject of Interaction Design to improve the understanding from the student towards the curriculum objective and target.
Improved the Performance of the K-Means Cluster Using the Sum of Squared Error (SSE) optimized by using the Elbow Method
Authors: Nainggolan Rena , Perangin-angin Resianta , Simarmata Emma , Tarigan Astuti Feriani 
Published: December 2019

AbstractK-Means is a simple clustering algorithm that has the ability to throw large amounts of data, partition datasets into several clusters k. The algorithm is quite easy to implement and run, relatively fast and efficient. Another division of K-Means still has several weaknesses, namely in determining the number of clusters, determining the cluster center. The results of the cluster formed from the K-means method is very dependent on the initiation of the initial cluster center value provided. This causes the results of the cluster to be a solution that is locally optimal. This research was conducted to overcome the weaknesses in the K-Means algorithm, namely: improvements to the K-Means algorithm produce better clusters, namely the application of Sum Of Squared Error (SSE) to help K-Means Clustering in determining the optimum number of clusters, From this modification process, it is expected that the cluster center obtained will produce clusters, where the cluster members have a high level of similarity. Improving the performance of the K-Means cluster will be applied to determining the number of clusters using the elbow method.