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5th International Conference on Energy, Environmental and Information System, ICENIS 2020

作者： Adi Prasetya, Nararya Purwanto, P. Maryono, Maryono Master Program of Environmental Science School of Postgraduate Studies Diponegoro University Semarang Indonesia Department of Chemical Engineering Faculty of Engineering Diponegoro University Semarang Indonesia Department of Urban and Regional Planning Faculty Engineering Diponegoro University Semarang Indonesia Centre for Green Infrastructure Resilience and Development School of Postgraduate Diponegoro University Indonesia

Providing more space for non-motorized transportation will change the orientation of how people use the road. The first step of changing the orientation of city development which is car-oriented to people-oriented is how to look at the overall existing road users. Accessibility is the basic part of how an area develops, including on a university development. UI Greenmetric as a parameter of university achieving how it can be called a green campus. Not only designing a good campus, but the 'sustainable' policy also cannot be separated from creating a comfortable environment. The current condition of Diponegoro University's open green space reaches less than 60%, while Undip Tembalang already has a pedestrian lane, but is not utilized properly. The research method uses descriptive analysis of the literature articles on how important the pedestrian path that has been done at other universities. The results show that improving and changing the road design effect. Relating to the comfort of people walk affects how the pedestrian path had used. The official regulations from the university also have an impact on reducing the use of motorized vehicles. Improving accessibility for students to use public transportation and non-motorized transportation could reduce emissions in the campus's environment. © The Authors, published by EDP Sciences, 2020.

关键词： Urban growth

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The spectrum of city park service scope: Case study of Lapangan Puputan Badung and Lapangan Puputan Margarana Denpasar-Bali 2

The spectrum of city park service scope: Case study of Lapan...

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2nd International Conference on Smart City Innovation

作者： Kohdrata, N. Suartika, G.A.M. Krisnandika, A.A.K. Yusiana, L.S. Dharmadiatmika, I.M.A. Landscape Architecture Study Program Faculty of Agriculture Udayana University Bali Indonesia Architecture Study Program Faculty of Engineering Udayana University Bali Indonesia

This research aims to find the spectrum of a park service scope from two city parks in Denpasar, a densely populated city. The city parks in study are Lapangan Puputan Badung and Lapangan Puputan Margarana as city public facilities of Denpasar - Bali that is said to improve citizen quality of life and environment as well. However, this research focuses to see how city parks in Bali serve their users. This study uses a survey research method. Sample of respondents are chosen using accidental sampling technique with questionnaire as media of data collection. Data series include, users' age, frequency of visit, activities, and domicile. Research findings are analysed spatially and descriptively as well. Result shows that most visitors are young people who spend time mostly for exercising and other recreational activities. It is also interesting to see that both city park users are regular visitors. They visit the parks at least 1 to 2 time per week and spend 1 to 2 hours in there. The parks users mostly come from densely populated areas. That shows the importance of city parks as complement to a city. However, as a city that going to smart city, ICT has not been recognized much. As conclusion, the spectrum of city parks service scope of Denpasar still ranging in traditional functions of public green open space. A city park serves a man-made nature-like place for people to get refresh within an urban landscape setting. © Published under licence by IOP Publishing Ltd.

关键词： Parks

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The Identification and Distribution Components of Polycyclic Aromatic Hydrocarbon Contaminants at the Port of Paotere, Makassar, South Sulawesi 1

The Identification and Distribution Components of Polycyclic...

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1st International Conference on Biotechnology and Food Sciences, INCOBIFS 2020

作者： Marzuki, I. Pratama, I. Ismail, H.E. Paserangi, I. Kamaruddin, M. Chaerul, M. Ahmad, R. Department of Chemical Engineering Fajar University Panakukang-Makassar South Sulawesi90231 Indonesia Department of Mechanical Engineering Fajar University Panakukang Makassar South Sulawesi90231 Indonesia Academy of Midwifery of Tahirah Al Baeti Bulukumba District South Sulawesi92513 Indonesia Program of Infrastructure and Environmental Engineering Fajar University Makassar South Sulawesi90231 Indonesia Department of Chemistry Faculty of Science and Technology Universitas Airlangga Kampus C-UNAIR Mulyorejo Surabaya East Java60115 Indonesia

The ASTM standard recommends that the 16 most common types of PAHs are found in petroleum processing activities, the chemical industry and marine loading ports. This research aims to identify and determine the distribution of PAHs contaminants at three sampling points of seawater around Paotere Port, Makassar, South Sulawesi, using the GC-MS instrument. Sampling point A is the center of Paotere Port activity, Point B with a radius of 3 km and point C with a radius of 6 km from the center of port activity. Sampling at each point was carry out at a depth of 100 cm above sea level. There are 10 PAHs identified at sampling point A and B, while at point C there are 8 components with relatively the same type of PAHs. The dominant PAHs components at each sampling point are relatively the same, namely at point A: Pyrene, Chrysene, Benz[a]pyrene and Dibenz(a,h)anthracene, point B: Pyrene, Chrysene and Benz(a)anthtracene, while at point C only Pyrene. The total concentration of PAHs at point A: 4,217 .106 ppm, medium polluted category, at point B: 2,124 .087 ppm, medium polluted category and at point C: 1,264 . 112 ppm, light polluted category. © Published under licence by IOP Publishing Ltd.

关键词： Pyrene

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Augmented Reality for Assisting Students in the Learning Riau Malay Culture Local Subject during COVID-19 Pandemic

Augmented Reality for Assisting Students in the Learning Ria...

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Education Technology (URICET), Universitas Riau International Conference on

作者： M. Hasmil Adiya Dewi Nasien David Andrio Suroyo Suroyo Dina Mutia Sari Nafisyah Apriani Department of Informatic Engineering Faculty of Computer Science Institut Bisnis dan Teknologi Pelita Pekanbaru Pekanbaru Indonesia Department of Chemical Engineering Faculty of Engineering Universitas Riau Pekanbaru Indonesia Department of History Education Faculty of Education Universitas Riau Pekanbaru Indonesia Program Studi Magister Faculty of Industrial Technology Universitas Trisakti Jakarta Indonesia

ISBN: (数字)9781665420969

ISBN: (纸本)9781665420976

Corona Virus Disease 2019 or known as COVID-19 disseminated Indonesia in March 2020. The presence of this virus leads to fear and worry, all work activities are carried out from home. This is also perceived by the Public Elementary School number 189 Pekanbaru (SDN 189), particularly in the subject Budaya Melayu Riau (BMR) or Riau Malay Culture. BMR is a subject on heritage that characterizes Riau Malay culture; it has material evidence objects which are the results of human cultural history, nature and the environment are notable to be preserved. The problem faced by SDN 189 is that the level of students' comprehension towards BMR subject is diminished during COVID-19. The solution offered in solving this problem is to create fun learning technology through online learning using Android-based Augmented Reality (AR). AR is a type of interactive technology combines actual and virtual objects to produce 3D objects that are real in life. Therefore, the ultimate goal of this research is to intensify the knowledge and teacher’s skills in teaching and enhance students' understanding of BMR subjects.

关键词： COVID-19 Three-dimensional displays Pandemics Education Media Internet Augmented reality

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Application of Technology Acceptance Model to E-learning Assessment (Kelase) in Agricultural Technology Education, UniversitasNegeri Makassar 1

Application of Technology Acceptance Model to E-learning Ass...

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1st International Conference on Education, Science and Technology 2019, ICESTech 2019

作者： Sukainah, A. Reski, P.P. Fadilah, R. Mustarin, A. Program Study of Agricultural Technology Education Faculty of Engineering UniversitasNegeri Makassar Indonesia

Kelase is an E-learning program that has been applied in the Agricultural Technology Education (PTP), especially in the Toxicology and Food Safety courses. This study aims to analyze application and acceptance of PTP students to Kelase, as well as variable correlation and linearity used in the Technology Accepted Model (TAM) method. The independent variables in this study consisted of variables perceived ease of use and perceived usefulness, while the observation variable was acceptance. Techniques for collecting data through giving questionnaires. The questionnaire instrument was tested for its validity and reliability. Data measurement scale uses Likert scale. Data processing uses IBM SPSS 20.0 software. The results show that level of perception of PTP student admissions is very high, which is between 70.1-91%. The correlation of TAM variable is significant and positive. Both variables, perceived ease of use (X1) and perceived usefulness (X2), are very influential on acceptance (Y) and both of these variables simultaneously influence the level of student acceptance of Kelase. The regression determination coefficient is generated, which is 52%. These results indicate that the influence of variables perceived ease of use (X1) and perceived usefulness (X2) is only 52%, and the rest, which is 48% influenced by other variables. © 2019 IOP Publishing Ltd. All rights reserved.

关键词： Students

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Effect of Temperature on Gasification of Biomass Using Zeolit

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Journal of Physics: Conference Series 2021年第1期1845卷

作者： H Porawati A Kurniawan E Yuliwati Study Program of Mechanical Engineering Politeknik Jambi Jambi Indonesia Graduate Program of Chemical Engineering Universitas Muhammadiyah Palembang Indonesia Program Study of Chemical Engineering Faculty of Engineering Universitas Muhammadiyah Palembang Indonesia

Biomass gasification converts into syngas through the gasification process is promising for renewable energy utilization. Although gasification is a sustainable and environmentally-friendly technology for value-added utilization of biomass, yield percentage is the major problem during biomass gasification. An optimized gasifier and highly active catalyst were proved to be effective for biomass production. Furthermore, the decomposition pathway was also important to advance the gasification reactors and catalyst design. This paper summarized the fundamentals, such as gasifier types, zeolite catalysts, and reaction and deactivation mechanisms. This review also sheds light on other excellent catalysts, effective gasifier, and catalyst reaction mechanisms are also discussed in detail. At last, the paper ends with a conclusion and a prospective discussion of the lab-scale research. At the contact time of 240 minutes, with a column height of 30 cm, at a temperature of 450 oC, the concentration of syngas promise well.

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study of Duck Feather Modification using NaOH to Removal Iron in Acid Mine Drainage (AMD 5

Study of Duck Feather Modification using NaOH to Removal Iro...

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5th International Conference on Energy, Environmental and Information System, ICENIS 2020

作者： Baroroh Lili Utami, Umi Heru, Susanto Cahyono, Bambang Doctor of Scientific Environmental Science Program Diponegoro University Semarang Indonesia Department of Chemical Faculty of Engineering Diponegoro University Semarang Indonesia Department of Chemistry Faculty of Science and Mathematics Diponegoro University Semarang Indonesia

study of duck feather modification using NaOH to removal iron in acid mine drainage (AMD) has been done. The objective of this study was to determine adsorption capacity. Modification duck feather that 2 g of duck powder was dissolved in 25 mL NaOH with a concentration of 1.00;1.25;1.50;1.75;2.00;and 2.25 % (v/v), then placed on hotplate stirrer at 50°C and stirred for 24 hours. The results showed that adsorption capacity of Fe by adsorbent of duck feather modification using NaOH optimum at concentration 1.50% and adsorption capacity before and after activation were 36.231 mg/g and 68.493 mg/g and potential to be used as an adsorbent to removal of Fe in acid mine drainage at coal mining. © The Authors, published by EDP Sciences, 2020.

关键词： Sodium hydroxide

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Pine resin utilization as a binding agent for densification of coconut shells and rice husks at various pressures

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AIP Conference Proceedings 2023年第1期2719卷

作者： Adi Setiawan Khairil Khairil Siti Nurjannah Nurmalita Nurmalita Zahra Fona Mechanical Engineering Department Faculty of Engineering Universitas Malikussaleh Bukit Indah 24352 Lhokseumawe Indonesia Magister Program in Renewable Engineering Faculty of Engineering Universitas Malikussaleh Bukit Indah 24352 Lhokseumawe Indonesia Chemical Engineering Department Universitas Sumatera Utara Medan Indonesia

Coconut shells and rice husks are potential biomass sources for briquette production. The commonly used binder is an edible material which may cause conflict with food security issues. This study aims to utilize pine resin in coconut shells and rice husks char densification process at the pressures of 100 kg/cm2, 150×105 kg/cm2, and 200 kg/cm2. Prior to the densification process, raw materials were sun-dried, carbonized, grounded, and sieved to 20 mesh particle size. After mixing with the pine resin binder, the dough was pressed and sun-dried for five days. The quality of the briquettes was assessed, including calorific value, moisture, ash, volatile matter, and fixed carbon contents. The combustion characteristics were investigated by direct combustion and thermogravimetric analyses. The result indicates that the calorific value of the briquette is up to 9.352 cal/g. Water content, volatile matter, and ash content are respectively 5.4%, 19%, and 11.2%. In addition, the burning rate of the briquette is 0.0076 g/sec. These characteristics are obtained from the briquette made of the mixture of coconut shells and rice husks char at a pressure of 200 kg/cm2. It indicates the potential use of pine resin as non-edible natural resin in briquetting.

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X-Ray Induced Degradation During Xps Analysis of Dicarboxylic Acid Powders

SSRN

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SSRN 2023年

作者： Ferreira, José Mario Trindade, Gustavo F. Simonelli, George de Moraes Pires, Carlos Augusto Da Silva, Ana Cristina Morais Rossi, Jesualdo Luiz dos Santos, Luiz Carlos Lobato Johnson, Patrick Alfred Department of Materials Science and Engineering Iowa State University AmesIA50011 United States Faculty of Engineering and Physical Sciences University of Surrey SurreyGU2 7XH United Kingdom National Physical Laboratory Middlesex TeddingtonTW11 0LW United Kingdom Chemical Engineering Postgraduate Program Federal University of Bahia 40210-630 Brazil Nuclear and Energy Research Institute - IPEN São Paulo05508-000 Brazil University of Wyoming United States

It is widely recognized that exposure to X-rays during XPS analysis can decompose different materials, resulting in mass loss and changes in chemical composition. These effects are evident in the near-edge X-ray absorption structure spectra of dicarboxylic acid powders, posing a fundamental limit to sensitivity for surface chemical analysis. Understanding the chemistry and kinetics of radiation decomposition is necessary for the accuracy and validation of XPS analysis on dicarboxylic acids. Here we evaluate the impact of X-ray exposure on characterizing chemical changes in three different dicarboxylic acids with varying aliphatic carbon chain lengths. From this investigation we propose straightforward correlations relating the tendency for radiation-induced decomposition based on the chemical structure of the acids. We employed two types of spectra, those acquired with minimal interaction (snapshot) and high-resolution spectra obtained over an extended period, to show that normal analysis conditions are likely to degrade these type of materials. © 2023, The Authors. All rights reserved.

关键词： X ray photoelectron spectroscopy

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Formulation of transparent soap with pandan leaf powder (Pandanus amaryllifolius Roxb.)

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AIP Conference Proceedings 2023年第1期2590卷

作者： N. Marliati I. Pranita Sirega C. Ulina Tarigan Cosmetology Study Program Faculty of Engineering Universitas Negeri Yogyakarta Caturtunggal Depok Sleman Regency Special Region of Yogyakarta 55281 Indonesia

This research aims to: 1) determine the right composition in making soap from fragrant pandan leaf powder, 2) determine the special features of fragrant pandan leaf powder soap, and 3) determine the quality of soap (storage) from fragrant pandan leaf powder. The research method used is the experimental research model. making transparent soap with the addition of fragrant pandan leaf powder under SNI standards. The quality of transparent soap can be known from organoleptic and preference tests. The composition of the addition of fragrant pandan leaf powder with different concentrations of 0.5%, 1%, and 1.5% in the soap made based on the preference test for transparent soap, it is known from the respondent's test that 78% liked the smell of soap, 58% said the color of the soap was dark green, 53% said the soap was very smooth without any grains, 50% said the transparency of the soap that could see objects up to <4 cm and the power very strong soap cleanser. Respondents' impression when using soap is 87% stating the impression is moist, 86% the impression is not hot, 82% feels soft, 80% feels dry, and 67% has foam power. The impression after using soap, 85% of respondents strongly agree that it is not irritating, 84% does not cause allergies, 77% is clean, 75% is fresh, 74% is moist, smooth and the mat/non-slippery is 67% respectively. All soaps produced give homogeneous results, pH 5.5. The addition of 1.5% pandan leaf powder was shown to inhibit the growth of fungi with an inhibition zone diameter of 37 mm.

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