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Analysis of Citarum River pollution indicator using chemical, physical, and bacteriological methods

AIP Conference Proceedings 2018年第1期2049卷

作者： Muhammad Sholeh Pranoto Pranoto Sri Budiastuti Sutarno Sutarno 1Doctoral Program of Environmental Science Department of Environmental Science Universitas Sebelas Maret Surakarta Indonesia 2Department of Chemistry Universitas Sebelas Maret Surakarta Indonesia 3Department of Environmental Science Universitas Sebelas Maret Surakarta Indonesia 4Department of Biology Universitas Sebelas Maret Surakarta Indonesia

Citarum River is the longest and largest river in West Java. Citarum River has a strategic role in the life of the community, such as a source of irrigation, a raw source of drinking water companies (PDAM), and water sources for 3 reservoirs/dams. However, Citarum River is indicated as one of the highly polluted rivers in the world. Source of pollution comes from industrial waste, household, agriculture, fishery, and other activities. Along the 297 km of the stream, there are 18 million inhabitants and over 2700 industries, some of dispose their waste into the river. The purpose of this study is to determine the level of water pollution of the Citarum River in the downstream area, Karawang Regency, West Java. This research was conducted using chemical, physics, and bacteriological analysis method. Preliminary research was conducted to find out the indicator values such as E-coli, BOD, COD, and turbidity level in the downstream of Citarum River. Preliminary result shows that the clean water threshold was exceeded with E-coli levels reaching 1600/100 ml, BOD 10 mg/liter, COD 19 mg/liter, and turbidity with 320 NTU scores exceeding the clean water threshold (12.8 times the normal). This research shows that Citarum River water is not a feasible source for PDAM raw water and must be processed before becoming drinkable water. Therefore, this research also studied on a water purification model with allophane composites, zeolites, quartz sand, or activated carbon.

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Anaerobic sequencing batch reactor in pilot scale for treatment of tofu industry wastewater

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AIP Conference Proceedings 2015年第1期1699卷

作者： Suparni Setyowati Rahayu Purwanto Budiyono 1Doctoral Program in Environmental Science University of Diponegoro Semarang Indonesia 2Department of Mechanical Engineering State Polytechnic of Semarang Semarang Indonesia 3Department of Chemical Engineering Faculty of Engineering Diponegoro University Semarang Indonesia

The small industry of tofu production process releases the waste water without being processed first, and the wastewater is directly discharged into water. In this study, Anaerobic Sequencing Batch Reactor in Pilot Scale for Treatment of Tofu Industry was developed through an anaerobic process to produce biogas as one kind of environmentally friendly renewable energy which can be developed into the countryside. The purpose of this study was to examine the fundamental characteristics of organic matter elimination of industrial wastewater with small tofu effective method and utilize anaerobic active sludge with Anaerobic Sequencing Bath Reactor (ASBR) to get rural biogas as an energy source. The first factor is the amount of the active sludge concentration which functions as the decomposers of organic matter and controlling selectivity allowance to degrade organic matter. The second factor is that HRT is the average period required substrate to react with the bacteria in the Anaerobic Sequencing Bath Reactor (ASBR).The results of processing the waste of tofu production industry using ASBR reactor with active sludge additions as starter generates cumulative volume of 5814.4 mL at HRT 5 days so that in this study it is obtained the conversion 0.16 L of CH4/g COD and produce biogas containing of CH4: 81.23% and CO2: 16.12%. The wastewater treatment of tofu production using ASBR reactor is able to produce renewable energy that has economic value as well as environmentally friendly by nature.

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Analysis of chili demand in Indonesia

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AIP Conference Proceedings 2023年第1期2583卷

作者： Mei Tri Sundari Darsono Joko Sutrisno Ernoiz Antriyandarti 1Doctoral Program of Agriculture Science Graduate School of Universitas Sebelas Maret Surakarta Central Java - Indonesia 2Agribusiness Study Program Faculty of Agriculture Universitas Sebelas Maret Surakarta Central Java - Indonesia

The increase in population that continues to increase every year and the national economic growth impacts the increase in chili demand, both from households, processing and food industries, and export needs. The price also influences the demand for chili products in the market. When chili production is abundant, the price of chili will be very low and demand will increase, but on the contrary, when chili production decreases, the price of chili will be high and demand will decrease. Therefore, this study aims to analyze the factors that influence Indonesian chili demand and determine the elasticity of chili demand in Indonesia. The data used in this study is data from 2005 to 2019. The analytical method used is multiple linear regression analysis. The results showed that the independent variables that significantly affected the Indonesian chili demand are income per capita, garlic price, and chili export price. The price elasticity of 0.134 indicates that the demand for red chili is inelastic. Shallots and garlic are complementary goods with elasticities of -0.285 and -0.060. The income per capita elasticity is 3.115, indicating that the percentage of red chili demand will increase if income increases.

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Comprehensive survey of cloud intrusion detection system

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AIP Conference Proceedings 2023年第1期2654卷

作者： Aditya Nur Cahyo Tri Kuntoro Priyambodo Mardhani Riasetiawan 1Doctoral Program of Computer Science FMIPA UGM Yogyakarta Indonesia 2Informatics Education FKIP UMS Surakarta Indonesia 3Department of Computer Science and Electronics FMIPA UGM Yogyakarta Indonesia

Intrusion Detection System provides services related to surveillance of computer security, as one of the minimum components that must exist in a computer network architecture. Regarding the adoption of cloud technology, many users have switched to using cloud computers to operate servers, applications, or the web in cloud computing. To meet the security needs of users, various open source and commercial tools are being developed. Although many developments have taken place in the IDS area, in cloud-based IDS many challenges such as security, interoperability, resource scheduling, virtualization still need to be improved. This paper reviews the paradigms and surveys about the Intrusion Detection System that runs on cloud computing in terms of concepts, technology, tools, and various challenges. A systematic literature review of selected papers, published from 2016 to 2020, was carried out to properly understand the Intrusion detection System paradigm in cloud computing and the security challenges faced in cloud computing. This review paper helps researchers who want to start their research careers in the cloud computing-based Intrusion Detection System

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Flower appearance of six Physalis ixocarpa genotype

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AIP Conference Proceedings 2021年第1期2353卷

作者： Diana Nurus Sholehah Sucipto Haryanto Hery Purnobasuki 1Doctoral Study Program of Mathematics and Natural Science Faculty of Science and Technology Airlangga University Indonesia 3Study Program of Agroecotechnology Faculty of Agriculture University of Trunojoyo Madura Indonesia 2Departement of Biology Faculty of Science and Technology Airlangga University Indonesia

Physalis ixocarpa referred to as American Husk Tomato or Tomatillo was used as a vegetable and traditional medicine. It is potential for production mainly as functional foods. The objective of this study was to elucidate the development and character of flower Physalis ixocarpa genotype that expected scientific findings and valuable information for agricultural practices and conservation of plants. The study had used descriptive observational methods of flowering. The flowering stage consists of two stages. In the bud stage, the parameter observed was the first bud apperance time, the colour and size of buds and pedicels. In the blooming stage, the parameter observed was the colour and size of sepal, petal, pistil, anther and filament. The result found that each genotype had the same flower development stage. The flower character differences of each genotype included the first flower emerged time, the colour of the calyx, lateral anther, filament, and pedicels.

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The profiles of pre-service elementary teachers (PETs) in biotechnology using RCB

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AIP Conference Proceedings 2018年第1期2014卷

作者： Idam Ragil Widianto Atmojo Sajidan Widha Sunarno Ashadi Dewanta Arya Nugraha 1Doctoral Program of Science Education Faculty of Teacher Training and Education Universitas Sebelas Maret Jl. Ir. Sutami No. 36A Surakarta Central Java Indonesia 57122

Understanding biotechnology is important to know the benefits of Biology before understanding the other materials. In addition, we can implement it in this research conception of biotechnology using Rainbow Code of Biotechnology (RCB) developed by Pawet Kafarski. The research subjects were 40 Pre-service Elementary Teachers’ (PETs) at the 4th semester in the Faculty of Teacher Training and Education, Universitas Sebelas Maret year 2017/2018. The test used RCB consisting of 15 multiple-choice items with short reasons. After PETs had done the test, the researcher interviewed them to get in-depth information about their answers. Based on the results, there are PETs’ conception of biotechnology, green biotechnology, red biotechnology, white biotechnology and blue biotechnology. The average percentage of 40 PETs’ correct answers is 37.5%. The lowest mean score is 17.5% in red biotechnology concept, while the highest mean score is in the concept of green biotechnology with the percentage of 30.56%. The lowest mean score is in the concept of RB with the percentage of 17.5%. This research can be used to develop learning methods on basic science courses.

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The Identification of Micro-hydro Power Plants Potential in Irrigation Areas Based on Unmanned Air Vehicle (UAV) Image Processing 1

The Identification of Micro-hydro Power Plants Potential in ...

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1st International Conference on Renewable Energy Research and Challenge, ICoRER 2019

作者： Alatas, Masrur Theresia Sri Budiastuti, Maria Gunawan, Totok Setyono, Prabang Burlakovs, Juris Yandri, Erkata Doctoral Program of Environmental Science School of Sebelas Maret University Jl. Ir. Sutami 36A Surakarta Central Java57126 Indonesia Department of Environmental Science School of Sebelas Maret University Jl. Ir. Sutami 36A Surakarta Central Java57126 Indonesia Department of Agrotechnology Faculty of Agriculture Sebelas Maret University Jl. Ir. Sutami 36A Surakarta Central Java57126 Indonesia Faculty of Geography Universitas Gadjah Mada Jl. Kaliurang Bulaksumur55281 Indonesia Department of Biological Science Sebelas Maret University Jl. Ir. Sutami 36A Central Java57126 Indonesia Department of Water Management Estonian University of Life Sciences Friedrich Reinhold Kreutzwaldi 1a Tartu51014 Estonia School of Renewable Energy Darma Persada University Jl. Taman Malaka Selatan No. 22 East Jakarta13450 Indonesia

Estimation of the energy demand in Indonesia will increase by 8.15 % annually until 2030. Indonesia is committed to preventing climate change through mix energy (new and renewable energy). One of the sources of this energy is waterpower plants with a potential of 75 091 MW have been utilized 6.4 %, mini-hydro, and micro-hydro with a potential of 19 385 MW have been utilized 1 %. In the Industrial Revolution 4.0, it is doable to identify such potential using drone. This study was conducted in the Kalibawang irrigation area, Special Region of Yogyakarta, Indonesia. The procedure starts with the generation of detailed Aerial Photography using Drone DJI Phantom 4. The images from aerial photography were then processed into high-resolution Digital Elevation Model (DEM). DEM data represent the study area topography and can be used to identify the stream gradient potential or height difference (H). Six potential points were identified with height differences between 3 m to 8 m, resulting in the potential generated power ranging from 125 kW to 334 kW. This study demonstrates the identification of micro-hydro energy potential points, height difference, and generated power using Drone. Six points were identified with total potential energy 1 418 kW. © The Authors, published by EDP sciences, 2020.

关键词： Aerial photography

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Combining rating scale and FANP to determine the important weight of learning competency for students’ assessment

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AIP Conference Proceedings 2016年第1期1755卷

作者： Sri Andayani Sri Hartati Retantyo Wardoyo Djemari Mardapi 1Doctoral program of Computer Science Universitas Gadjah Mada Yogyakarta Indonesia 2Department of Computer Science and Electrical Universitas Gadjah Mada Yogyakarta Indonesia 3Study Program of Educational Research and Evaluation Graduate School Universitas Negeri Yogyakarta Indonesia

Determining the important weight of learning competency is an important problem for students’ assessment in credentialing and certification decision-making. Learning competencies should have importance weight that definitely affect the final decision, and can represent strengths and weaknesses of student achievement of certain competencies. The weight of learning competency is determined based on its difficulty level, which is identified by the depth, scope and complexity of material involved in it. The dependency among learning competencies must also be considered in determining the weight. Therefore, this study aims to develop a weighting method based on combining rating scale and fuzzy analytic network process (FANP) to determine the weight of learning competency. Using the proposed method, the weight of learning competency is obtained and then can be used in calculating the final score for students’ assessment.

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The local elites perception of "hamemayu Hayuning Bawana" philosophies in the Green Village program in Yogyakarta Province 5

The local elites perception of "hamemayu Hayuning Bawana" ph...

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5th International Conference on Climate Change 2020, ICCC 2020

作者： Sulistiyani, A.T. Sutarno Setyono, P. Wahyunengseh, R.D. Doctoral Program of Environmental Science Sebelas Maret University Jl. Ir. Sutami 36A Surakarta Kentingan Jebres Surakarta57126 Indonesia Public Policy and Management Department Faculty of Social and Political Sciences Gadjah Mada University Jl. Socio Justicia 1 Bulaksumur Depok Sleman Daerah Istimewa Yogyakarta55281 Indonesia Dept. of Biology Faculty of Mathematics and Natural Sciences Sebelas Maret University Jl. Ir. Sutami 36A Surakarta Kentingan Jebres Surakarta57126 Indonesia Dept. State Administration Sciences Faculty of Social and Political Sciences Sebelas Maret University Jl. Ir. Sutami 36A Surakarta Kentingan Jebres Surakarta57126 Indonesia

This article explains the philosophy of "Hamemayu Hayuning Bawana"as the local wisdom of Yogyakarta Province, which is a fundamental value in the green village program to cope the climate change. The teaching of the value of caring for the environment has been widely recognized by society, however, it has been eroded by modernization. To overcome the gap in cultural understanding with low implementation and realization, then this research focuses on how philosophical values are imbued in the green village program based on the perception of the local elite? The survey result of 118 local elites had been distributed across 45 villages were processed using SPSS, in form of descriptive statistics. The applicative understanding of these values is not yet detailed and technical. Thus, the implementation of philosophical values for green village development planning is still limited. In order to enhance the inspiration and realization of the philosophy, it is necessary to develop the spirit, innovation, creativity, applicability, participatory and proactivity of the local elite. We prove that the local elite must be able to change the philosophical concept within real behavior to build a sustainable green village. © Published under licence by IOP Publishing Ltd.

关键词： Climate change

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Administration of 50% propolis ethanolic extract increases the number of gingivitis fibroblast in H2O2-induced rats

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AIP Conference Proceedings 2019年第1期2108卷

作者： A. A. Kompiang Martini Agung Nova Mahendra 1Doctoral Program in Biomedical Science Faculty of Medicine Udayana University Denpasar Indonesia 2Department of Dental Radiology Faculty of Dentistry Mahasaraswati University Denpasar Indonesia 3Department of Pharmacology and Therapy Faculty of Medicine Udayana University Denpasar Indonesia

Gingivitis may be caused by endogenous and exogenous factors. One of the exogenous factors is caused by chemical compounds such as 35% H2O2, a dental bleaching agent. Dental bleaching is a conservative measure to improve tooth color. This agent may cause inflammation of the mucosa around the teeth like the gingiva. The gingiva may become hyperemic, causing pain and changes in the gingival contour. Treatment of gingivitis basically suppresses inflammatory reactions and speeds the healing process. Histologically, inflammation healing shows an increase in the number of fibroblasts. This study was aimed to investigate the effect of 50% propolis ethanol extract (EEP) in 35% H2O2−induced male Wistar rats. This research was conducted with an experimental design (Randomized posttest only with control group design), consisting of 2 groups, namely the control group and the treatment group. The control group was given aquadest and the treatment group was given propolis ethanol extract with a concentration of 50% topically. The results were analyzed statistically using computer. Mann Whitney U Test showed a significantly higher number of fibroblasts in the treatment group compared to the control group (p<0.05). It can be concluded that the administration of 50% EEP could increase the number of fibroblasts in the healing process of gingival inflammation in 35% H2O2−induced rats.

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