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Satellite Imagery Data: Dynamic Systems Model for sustainable urban forest in area of Halim Perdana Kusuma, East Jakarta

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IOP Conference Series: Earth and Environmental science 2018年第1期158卷

作者： D M Sundara D M Hartono E Suganda JS H Haeruman Doctoral student at Environmental Science Program University of Indonesia Jl. Salemba Raya No. 4 Jakarta - 10430 Indonesia Faculty of Engineering Department of Civil Engineering University of Indonesia Depok West Java 16424 Indonesia Faculty of Engineering Department of Architecture Engineering University of Indonesia Depok West Java 16424 Indonesia Environmental Science Program University of Indonesia Jl. Salemba Raya no. 4 Jakarta-10430 Indonesia

East Jakarta icon as a buffer and the lungs of the city is still a big dream of Jakarta. It is a classic problem that there is a struggle for land between current economic interests and sustainable environmental interests for the future. This paper discusses the development of urban forest area of Halim Perdana Kusuma, East Jakarta. The forest area according to regulations of existing city local governments is not enough to support sustainable urban development indicators. Therefore, it requires an extensive mapping of urban forest potential development accurately by utilizing satellite imaging technology. Landsat-TM satellite imagery data can provide a full picture of the potential land width for urban forest area development. The results of this satellite image will then be made into a model of urban forest as one of the indicators of sustainable urban development. This research aims to support sustainable urban development through environmental balance in the form of a green neighborhood revitalization and development of urban forests and to create socio-economic balance. This paper uses a dynamic system model to simulate the conditions of the region against the intervention performed in the potential area for development of urban forests which are derived from urban spatial analysis based on satellite image data, using GIS program as a tool. The result is a model of urban forest area which is integrated with a social and economic function to encourage the development of sustainable cities.

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Characteristic of beef tallow/rice husk charcoal/plaster composite phase change materials

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AIP Conference Proceedings 2023年第1期2568卷

作者： I. Made Astika I. Nyoman Suprapta Winaya I. Ketut Gede Wirawan Akhmad Herman Yuwono I. Dewa Gede Ary Subagia 1Doctoral Study Program of Engineering Science Faculty of Engineering Udayana University Kampus Sudirman Denpasar Bali 80234 Indonesia. 2Study Program of Mechanical Engineering Faculty of Engineering Udayana University Kampus Bukit Jimbaran Badung Bali 80361 Indonesia 3Department of Metallurgy and Materials Engineering Faculty of Engineering Universitas Indonesia Kampus Baru UI Depok Depok 16424 Indonesia

Composite materials are a combination of several materials to form a new material with specific properties. Chemical compatibility of the constituent materials is a factor that affects the characteristics of composite materials. Currently, composite phase change materials (PCM) are commonly applied as thermal energy storage systems. This study investigated the characteristics of beef tallow/rice husk charcoal/plaster PCM composite. The weight fraction of rice husk charcoal used was 10%. To prevent leakage of beef tallow from the composite structure, the researcher used polyvinyl acetate (PVAc) to cover the tallow/RHC composite before mixing it with plaster material. As much as 30% of the tallow/RHC/PVAc composite weight fraction is integrated into the plaster. PCM composite was made by using a direct incorporation method. The FTIR test results on the PCM composites produced showed good chemical compatibility among different components. The scanning electron microscope results showed the formation of microcapsules where the rice husk charcoal and polyvinyl acetate functions as a wrapper/capsule for beef tallow. This composite is suitable for application in building walls as thermal energy storage.

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Thermal instability and kinetics analysis on triacetone triperoxide (TATP)

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IOP Conference Series: Earth and Environmental science 2018年第3期189卷

作者： Wei Gu Jia-Jia Jiang Jun-Cheng Jiang Laiwang Bin Jiangsu Key Laboratory of Hazardous Chemicals Safety and Control College of Safety Science and Engineering Nanjing Tech University Nanjing 210009 China Doctoral Program Graduate School of Engineering Science and Technology National Yunlin University of Science and Technology (YunTech) 123 University Rd. Sec. 3 Douliou Yunlin 64002 Taiwan ROC

Differential Scanning Calorimetry (DSC), Thermogravimetry(TG) and vent sizing package 2 (VSP2) were performed to understand thermal behavior and decomposition kinetics of triacetone triperoxide (TATP) under non-isothermal and adiabatic conditions, respectively. Then the maximum self-heating rate [(dT/dt)max], maximum pressure rise rate[(dP/dt)max] were acquired. DSC studies revealed a coupling phenomenon of decomposition reaction and phase transition. Based on the DSC data, the thermal decomposition kinetic parameters were worked out and compared through the Friedman and ASTM E698 methods. The results indicated that Heat of decomposition (ΔHd) was extraordinary large even up to 2700 Jg−1 for which recrystallized with methanol merely. The activation energy of which used methanol to recrystallize was 155.5kJ/mol by (ASTM) E-698 methods. By Friedman method Linear regression was able to reach a high enough level when the reaction progress (α) was between 0.1–0.9. The results can be used to calculate the optimal parameters for processing a safer design and establish the database of TATP for loss prevention protocol.

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Activated carbon characteristics of tabah bamboo that physically activated under different activation time

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IOP Conference Series: Materials science and engineering 2019年第1期539卷

作者： D N K P Negara T G T Nindhia I W Surata M Sucipta F Hidajat Doctoral Study Program of Engineering Science Faculty of Engineering Udayana University Kampus Sudirman Denpasar-Bali Indonesia Mechanical Engineering Department of Udayana University Street of Bukit Jimbaran Badung Bali Indonesia PPPTMGB 'Lemigas' Jl. Ciledug Raya Kav. 109 Jakarta Selatan 12230

Activated carbon is a versatile porous material that widely applied to purify, deodorize, decolorize, remove or reduce some gases harmful constituents and storage of gas. For different application different characteristics of activated carbon is required. This paper concerns to find out the characteristics of activated carbons derived from tabah bamboo (Gigantochloc nigrociliata) that physically activated with different activation holding time. Prepared tabah bamboo was carbonized by heating up to the temperature of 800 °C for two hours. The char produced was powdered and then activated physically by heating up to 800 °C, soaked at that temperature during each 1, 1.5 and 2 hours under 100 mL/min N2 flow. Activated carbons manufactured were characterized by proximate and ultimate analyses and SEM observation. The results show that the highest fix carbon (82.52%) and lowest ash (5.91 %) was obtained at 1 hour soaking time with moisture and volatile contents were 3.56% and 8.00 % respectively; the highest carbon (C) content of 84.16 % was yielded at soaked time of 1.5 hours; SEM observation shows that there were significant differences of morphology structure between raw material and activated carbons for all of the soaking time variations. The pores structures have been formed in the activated carbons produced.

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Sensitivity Analysis with AHP Method: Selection of Foundation Design on Bridge Sei Muara Bulan Anak 2

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Journal of Physics: Conference Series 2018年第1期1028卷

作者： Hendrik Sulistio Mega Waty Muhammad Ikhsan Setiawan Nuning Kurniasih Ansari Saleh Ahmar Department of Civil Engineering Doctoral Program Tarumanagara University Jakarta 11440 Indonesia Department of Civil Engineering Narotama University Surabaya Jawa Timur 60117 Indonesia Faculty of Communication Science Library & Information Science Universitas Padjadjaran Bandung Jawa Barat 45363 Indonesia Department of Statistics Universitas Negeri Makassar Indonesia

The selection of the bridge is fundamental thing to Sei Anak Muara Bulan 2 Bridge Planning. After knowing the results of capacity analysis of land and pile support capacity, ease of implementation, determine the selection of foundation planning decisions. The results of AHP implementation indicate that the aspects of land and pile carrying capacity are the main priority criteria with the amount 61.7% as the reason to determine the choice of bridge foundation and the result of alternative is the foundation of equal to 42,2%

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Performance of vehicle direction behavior on turning conditions by adding braking force proportion control

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AIP Conference Proceedings 2024年第1期3053卷

作者： I. Ketut Adi Atmika I. Gusti Agung Kade Suriadi Mechanical Engineering Department of Udayana University Street of Bukit Jimbaran Bali 80361 Indonesia Technology and Material Research Center of Udayana University Street of Bukit Jimbaran Bali 80361 Indonesia Doctoral Program of Engineering Science Engineering Faculty of Udayana University Street of PB Sudirman Bali 80114 Indonesia

The performance of vehicle direction stability both on straight roads and turning roads is one of the important aspects to be considered in designing automotive products as a whole. In straight road conditions, an antilock brake system has been developed or better known as the Antilock Breaking System (ABS), but in turning conditions, the standard ABS performance is less than optimal to overcome oversteer or understeer vehicle conditions. The less optimal performance of vehicle direction stability is due to the magnitude of the braking force of each wheel is still the same while in turning conditions the braking force requirements of each wheel are not the same. One strategy to overcome these weaknesses is to control the proportion of braking force on each wheel. The research was conducted by formulating the physical model of the system into a mathematical model, then simulating it with a Simulink matlab. The braking force proportion control system model, and the vehicle model are made completely, then integrated into the vehicle direction stability performance plant/system. The simulation results show that at a fairly high speed of 80 km/hour the braking system with control of the proportion of braking force is still quite good, while the standard ABS at speeds above 60 km/hour tends to oversteer.

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Thermal Activiation of Sr3Fe2O7 Electrocatalysts for Water Oxidation at Neutral pH

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ECS Transactions 2014年第22期61卷

作者： Toshihiro Takashima Koki Ishikawa Hiroshi Irie Clean Energy Reseach Center University of Yamanashi Special Doctoral Program for Green Energy Conversion Science and Technology Interdisciplinary Graduate School of Medicine and Engineering University of Yamanashi Japan Science and Technology Agency (JST) Core Research for Evolutionary Science and Technology (CREST Clean Energy Research Center University of Yamanashi

The Ruddlesden-Popper-type layered perovskite strontium ferrite (Sr3Fe2O7) was studied as an electrocatalyst for water oxidation to molecular oxygen (O2). The electrocatalytic activity of Sr3Fe2O7 was found to be dependent on the temperature, and the overpotential for water oxidation was markedly lower at 70 oC than at 30 oC. Namely, at pH 7, O2 evolution initiated with overpotentials of approximately 100 and 300 mV at 70 and 30 oC, respectively. When lanthanum-substituted Sr3Fe2O7, Sr2.6La0.4Fe2O7, was used to catalyze O2 evolution, the distinctive temperature dependence disappeared and O2 evolution was driven with a low overpotential even at 30 oC. These results suggest that the formation of Fe4+ is important for decreasing the overpotential for water oxidation to produce O2.

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The effect of ozone exposure to extend the shelf life of carrots (Daucus carrota L.) against vitamin C levels and hardness

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AIP Conference Proceedings 2024年第1期3047卷

作者： Deny Arifianto Yunus Susilo Tri Wahyuni Miratul Khasanah Riries Rulaningtyas Suryani Dyah Astuti Doctoral Program Faculty of Science and Technology Universitas Airlangga Surabaya 60115 Indonesia Faculty of Engineering Universitas Dr Soetomo Surabaya 60118 Indonesia Department of Physics Faculty of Science and Technology Universitas Airlangga Surabaya 60115 Indonesia Department of Chemistry Faculty of Science and Technology Universitas Airlangga Surabaya 60115 Indonesia

Agricultural production is influenced by the handling of post-harvest agricultural products. The handling should prevent factors that can lead to a decrease in the quality of agricultural products. Ozone exposure is done to find out the most effective shelf life of carrots. The sample consisted of 3 groups, namely the control group without ozone treatment (T0), the ozone exposure group through air/spray (T1), the ozone exposure group through immersion in water/soak (T2) and the spray and soak combination group (T3). Ozone exposure time is given for 10 minutes in a closed container, further observed organoleptic changes, pH, hardness and vitamin C levels contained in carrots after 1-5 days of storage. The research results showed that ozone treatment with various methods resulted in significant differences (p=0) in mass loss, pH and hardness of carrots. Ozone treatment with spray and soak on day 1-5 resulted in the stability of mass loss, pH and hardness when compared to other treatment methods. The effect of ozone exposure on carrots by spray and soak can extend shelf life with the smallest percentage decrease based on the results of organoleptic tests, mass loss (58%), hardness (35%) and pH (22%) on the 5th day. So ozone treatment is able to extend the shelf life of carrots based on their organoleptic and physical parameters.

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Implementation of Apriori Algorithm for Analysis of Consumer Purchase Patterns

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Journal of Physics: Conference Series 2019年第1期1255卷

作者： Suprianto Panjaitan Sulindawaty Muhammad Amin Sri Lindawati Ronal Watrianthos Hengki Tamando Sihotang Bosker Sinaga Teknik Informatika STMIK Pelita Nusantara Medan Sumatera Utara Indonesia Doctoral Program Faculty of Computer Science and Information Technology Universitas Sumatera Utara Medan-Indonesia Program Doctoral Vocational Technology Education Postgraduate Engineering Faculty Padang State University Padang West Sumatera-Indonesia Manajemen Informatika AMIK Logika Sumatera Utara Indonesia Manajemen Informatika AMIK Labuhan Batu Sumatera Utara indonesia

Consumer purchasing patterns are a form of purchases made by consumers, whether someone or a lot of people to get the desired item by making a purchase transaction. One characteristic of the purchase pattern is the existence of acquiring something through exchanging money. This study aims to create an application that is used in determining consumer purchasing patterns by applying a priori algorithms and using Visual Basic 2010 as a tool for determining consumer purchase patterns. This application uses a priori algorithm calculation method where the sample consumer purchase data will be sorted and calculated by providing the value of the minium support and configuration parameters and based on the results of confidence the largest number of conclusions such as: can be used as information for determining sales, the application of a priori algorithms can provide information pattern combination item set from consumer purchase data that is with support above 15% and confidence above 50% on item set.

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Study of domestic wastewater in oil and gas field: A case study in the Cangkring river, Tuban, East Java

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IOP Conference Series: Earth and Environmental science 2022年第1期963卷

作者： A S Patimah A Prasetya S H Murti Department of Mining Engineering Universitas Papua 98314 West Papua Indonesia Student of Doctoral Program in Environmental Science School of Postgraduate Universitas Gadjah Mada 55281 Yogyakarta Indonesia Department of Chemical Engineering Faculty of Engineering Universitas Gadjah Mada 55281 Yogyakarta Indonesia Department of Geographic Information Science Faculty of Geography Universitas Gadjah Mada 55281 Yogyakarta Indonesia

Mudi Field, Tuban is an oil and gas producing area in East Java. Pad B Mudi Field is an office area for the oil and gas industry. The oil and gas industrial office area in Pad B Mudi Field produces domestic wastewater, which is channeled into the Cangkring River. Domestic wastewater flows directly into rivers. This study aims to determine the water quality of the Cangkring River region, which is mixed with domestic wastewater from Pad B Mudi Field. Samples of river water were taken at 3 points along with the river flow. Sample evaluation included physical, chemical, and biological characteristics. Sample test results were adjusted according to domestic wastewater quality standards and water quality standards. Parameters tested include temperature, TSS, pH, BOD5, COD, ammonia (NH3), phosphate (PO43-), chromium, oils and fats, and total coliforms. The highest values of the three samples for each parameter were temperature of 20.8 °C, TSS of 13 mg/L, pH of 7.8, BOD5 of 6.53 mg/L, COD of 17.38 mg/L, ammonia (NH3) of 6.13 mg/L, phosphate (PO43-) of 1.15 mg/L, chromium of 0.01 mg/L, oils and fats of 1.6 mg/L, and total coliform of 2400/100 mL. The values of the three points of the Cangkring River water test results met all the parameters of the domestic wastewater quality standards. In testing water quality standards, Cangkring River water met all parameters of class 4 water quality standards, namely water quality that can be used to irrigate agriculture. So it can be concluded that the condition of the Cangkring River water is safe for the community but is not suitable for drinking water, recreational infrastructure, and aquaculture.

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