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

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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Effects of roasting process on the precursor components for maillard reaction in fermented cocoa beans

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AIP Conference Proceedings 2023年第1期2596卷

作者： Nadirah B. Andi Pallawa Salengke Pirman Department of Agricultural Technology Faculty of Agriculture Hasanuddin University Makassar Indonesia Agricultural Engineering Study Program Hasanuddin University Makassar Indonesia

Several essential reactions, such as Maillard and amadori degradation, occur inside cocoa beans during the roasting process. The acidity formed during fermentation decreased, and the distinctive chocolate aroma increased, indicating the quality of the raw. These reactions convert chemical groups such as amino acids and reducing sugar into flavor compounds and provide delightful taste and aroma. This study was designed to determine the effect of the roasting process on reduced sugars and amino acids; two critical groups of chemical compounds play essential roles in developing chocolate flavor and aroma. Roasting was performed using a rotating drum roaster. Reducing sugar and amino acids were analyzed using Nelson-Somogy spectrophotometry and Liquid chromatography-mass spectrometry (LC-MS) methods. The results showed that the roasting of fermented cocoa beans caused a reduction of about 0.27% in reducing sugar after 18-minute roasting; on the other hand, total amino acids content increased nearly 5.92% during roasting.

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High Level Learning Approach for High Level Collision Avoidance Using Sensors

High Level Learning Approach for High Level Collision Avoida...

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Interdisciplinary Humanitarian Conference for Sustainability (IIHC), International

作者： Lamhot Naibaho Razauddin L. Vertivendan V. Karunakaran Ashish Oberoi N.C. Ajay Vishwath English Language Education Study Program Faculty of Letters and Languages Christian University of Indonesia Department of computer and information sciences Gulf Colleges Saudia Arabia Department of CSE Galgotias University Greater Noida Uttar Pradesh India Department of CSE Faculty of Engineering and Technology JAIN (Deemed-to-be University) Bangalore INDIA Department of CSE RIMT University Mandi Godindgarh India Aeronautical Department Parul Institute of Engineering and Technology Parul University

Motion planning for many unmanned aircraft is challenging because they have a larger configuration space than self-driving automobile development (Automated guided vehicles). Additionally, there are more significant uncertainties and disruptions in UAV environments, which makes inter automatic navigation more difficult. In this letter, I proposed a 2 recurrent neural networks (RL) oriented multi-UAV collision avoidance technique by modeling the unpredictability or noise in the environment. Our objective is to create a strategy that can construct a path without clashing with anything using local noisy data. But unlike supervised algorithms, RL lacks a steady training data set with floor labels, thus its collision avoidance strategies often show significant fluctuation and are difficult to reproduce. To solve these issues, we created a two-stage training method for RL-based collision avoidance. We first optimize the policy, and then we utilize a supervised learning methodology with a loss function that encourages the agents to adopt the well-known reciprocity obstacle detection mechanism. In the second step, we use transmission to fine-tune the policy. The complete computer simulation findings demonstrate that this approach can handle noisy local views with erratic sound levels and can design moment & accident paths under inadequate sensing. We review the impact of our policies in a variety of ways.

关键词： Training Uncertainty Supervised learning Training data Aircraft navigation Sensors Noise measurement

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Biomass waste as an alternative source of carbon and silicon-based absorbents for CO2 capturing application

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Chemosphere 2023年 343卷

作者： Suresh, R. Gnanasekaran, Lalitha Rajendran, Saravanan Jalil, A.A. Soto-Moscoso, Matias Khoo, Kuan Shiong Ma, Zengling Halimatul Munawaroh, Heli Siti Show, Pau Loke Departamento de Ingeniería Mecánica Facultad de Ingeniería Universidad de Tarapacá Avda. General Velásquez 1775 Arica Chile University Centre for Research & Development Department of Mechanical Engineering Chandigarh University Punjab Mohali140413 India Department of Chemical Engineering Lebanese American University Byblos Lebanon Centre of Hydrogen Energy Institute of Future Energy Johor UTM Johor Bahru81310 Malaysia Faculty of Chemical and Energy Engineering Universiti Teknologi Malaysia Johor UTM Johor Bahru81310 Malaysia Universidad Autónoma de Chile Chile Department of Chemical Engineering and Materials Science Yuan Ze University Taoyuan Taiwan Centre for Herbal Pharmacology and Environmental Sustainability Chettinad Hospital and Research Institute Chettinad Academy of Research and Education Tamil Nadu Kelambakkam603103 India Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection Wenzhou University Wenzhou325035 China Study Program of Chemistry Faculty of Mathematics and Science Education Universitas Pendidikan Indonesia Jalan Dr. Setiabudhi 229 Bandung40154 Indonesia Department of Chemical Engineering Khalifa University P.O. Box 127788 Abu Dhabi United Arab Emirates Department of Chemical and Environmental Engineering Faculty of Science and Engineering University of Nottingham Malaysia Jalan Broga Selangor Darul Ehsan Semenyih Malaysia

The production of low-cost solid adsorbents for carbon dioxide (CO2) capture has gained massive consideration. Biomass wastes are preferred as precursors for synthesis of CO2 solid adsorbents, due to their high CO2 adsorption efficiency, and ease of scalable low-cost production. This review particularly focuses on waste biomass-derived adsorbents with their CO2 adsorption performances. Specifically, studies related to carbon (biochar and activated carbon) and silicon (silicates and geopolymers)-based adsorbents were summarized. The impact of experimental parameters including nature of biomass, synthesis route, carbonization temperature and type of activation methods on the CO2 adsorption capacities of biomass-derived pure carbon and silicon-based adsorbents were evaluated. The development of various enhancement strategies on biomass-derived adsorbents for CO2 capture and their responsible factors that impact adsorbent's CO2 capture proficiency were also reviewed. The possible CO2 adsorption mechanisms on the adsorbent's surface were highlighted. The challenges and research gaps identified in this research area have also been emphasized, which will help as further research prospects. © 2023 Elsevier Ltd

关键词： Carbon dioxide

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Simulation of model landslides observation in laboratory used by IoT

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AIP Conference Proceedings 2023年第1期2609卷

作者： Made Sutha Yadnya I. G. P. Wedashwara Wedarama I. Wayan Sudiarta 1Electrical Engineering Communication Laboratory Engineering Faculty University of Mataram Mataram Indonesia 2Informatics Engineering Faculty of EngineeringUniversity of Mataram Mataram Indonesia 3Physic Study Program Faculty of Mathematics and Natural Science University of Mataram Mataram Indonesia

This paper is collaboration between BMKG and the University of Mataram to mitigate land slide. For this study using light intensity sensors, air temperature sensors, voltage sensors, current sensors, humidity sensors. This research is on a laboratory scale with a soil slope of 10 degrees, dry soil with a tendency to split (clay) from brittle volcanic rocks. The initial conditions were without rain, then the soil was burdened with rain in low (drizzle), medium (25mm/h) and high (55mm/h) capacities. The second condition of the stage is given a vibration which is a model of the earthquake evenly on that stage. Soil Moisture soil, soil temperature, 3 pieces of vibration sensor switch, piezo electric vibration sensor. The initial height of the soil is 36.78 cm with a width of 79.35cm after being rained for 90 minutes, the final height is 29.93 and 60.25 cm, widening receding to the right and left sides.

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Phytoremediation of chrome in Batik industry wastewater using Cyperus haspan

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Nanotechnology for Environmental engineering 2020年第1期5卷 2-2页

作者： Wirosoedarmo, Ruslan Anugroho, Fajri Mustaqiman, Aulia Nur Amanah, Riza Gustinasari, Kiki Environmental Engineering Program Study Department of Agricultural Engineering Faculty of Agricultural Technology Brawijaya University Jalan Veteran Malang City65145 Indonesia

Batik industry wastewater has the characteristic of dark-colored organic waste, high temperature and pH, as well as high biological oxygen demand (BOD), chemical oxygen demand (COD), and total suspended solid (TSS) content that caused by the use of chemical and coloring substances during the Batik production and coloration process. The waste processing method that can be done biologically is phytoremediation. Hydrophyte (aquatic plant) that can be used for phytoremediation on this research is Cyperus haspan. The sample taking on the research is being done by using a grab sample that can be taken at Rumah Industri Batik Blimbing, Malang. The research plan used is a completely randomized design with the factors that can be seen during the experiment. The time detention factor is on the fourth, eighth and twelfth day. The waste liquid concentration factor is K25 that can be found from mixing 25% (liquid waste): 75% (well water) and K250 that can be found by mixing 50% (liquid waste): 50% (well water), with the total volume of 6L on each tub. The waste parameter analyzed in this research is the BOD, COD, TSS, and chromium. The temperature of liquid waste during the experiment is around 260–320 °C. On the other hand, the pH on the waste liquid is around 7.9–8.9. The effective decrease in BOD and COD on K25 is 68% and 57.8% on day 8, while the decrease in BOD on K50 is 10% on day 4, and K25 and K50 have effective decrease of chromium for 44% on day 12, while TSS is increased. The increase of a few parameter contents that was studied is because the evaporation can cause the phytoremediation to become concentrated and the organic content increased, and the phytoremediation process of the waste becomes less efficient. © 2020, Springer Nature Switzerland AG.

关键词： Chromium

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Numerical Simulation of Spear Motion as Game Items

Numerical Simulation of Spear Motion as Game Items

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International Symposium on Nanoscience and Nanotechnology in Life Sciences 2017, ISNNLS 2017

作者： Muhima, R.R. Mardi, S. Hariadi, M. Puspitasari, I. Informatics Engineering Department ITATS Arief Rachman Hakim 100 Surabaya Indonesia Electrical Engineering Department Sepuluh Nopember Institute of Technology Indonesia Information System Study Program Faculty of Science and Technology Universitas Airlangga Jl. Mulyorejo Surabaya60115 Indonesia

Game development in 3D is mostly done by characters, items and the environment. Game items such as character weapons modeled in 3D will be the attraction of a game. In this paper, spear motion as a game items is modeled in 3D. Nonlinear Equations Six Degrees of Freedom (6 DOF) are used for mathematical models of spear motion. The parameters studied in the motion model are: geometry, mass and aerodynamics. Spear aerodynamic parameters were analyzed using the Datcom method. Numerical simulation of mathematical models of spear motion with variations in the initial velocity of the throw and the direction of the throw. From the results of numerical simulation, the maximum range R = 131.7 m at the initial velocity V0 = 40 m/s, the direction of throw (angle θ0 = 35 deg, angle φ0 = 10 deg, ψ0 = 0 deg). And the maximum height Hmax = 12.18 m is achieved at the initial velocity V0 = 20 m/s, direction of throw (angle θ0 = 35 deg, angle φ0 = 40 deg, angle ψ0 = 0 deg). © 2020 Published under licence by IOP Publishing Ltd.

关键词： Aerodynamics

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Petrophysics and rock physics using VTI model for low permeability and high porosity reservoir in CCS Gundih gas field pilot project, Indonesia 2

Petrophysics and rock physics using VTI model for low permea...

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2nd Southeast Asian Conference on Geophysics, SEACG 2018

作者： Fatkhan Danio, H. Anggarini, L.T. Mudatsir, O.A. Sule, M.R. Seismology Exploration and Engineering Research Group Faculty of Mining and Petroleum Engineering Institut Teknologi Bandung Indonesia Geological Engineering Study Program Universitas Pertamina Indonesia Geological Engineering Study Program Institut Teknologi Bandung Indonesia

A pilot Carbon Capture and Storage (CCS) project in Indonesia is planned to be implemented in Gundih area, Central Java Province in Indonesia. Prior to conducting CO2 injection, reservoir characterisations have to study thoroughly to assure that the reservoir is to meet with CCS standard requirements. The Jepon well in the Gundih fied was proposed as a suitable site for CO2 injection. The decision was made to proceed with a comprehensive site assessment and geological modelling of the Jepon area. This site was selected based on the reason the presence of a potentially suitable reservoir (Ngrayong Sandstone) and primary and secondary seals (Bulu Limestone and Wonocolo claystone). Using logging data, petrophysics and rock physics model are used to evaluate potential of the CO2 injection site. Permeability results from petrophysics calculations and recent injection tests show very small;whilst porosity is relatively high. This can be caused by fractures mostly are not connected. Hence, rock physics for the reservoir is evaluated and modelled as anisotropy or Vertical Tranverse Isotropy (VTI) in which fractures with preferred orientation. Stiffness calculations for VTI medium with different aspect ratio shows consistent with low permeability result. © 2019 IOP Publishing Ltd. All rights reserved.

关键词： Carbon capture

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Digital storytelling of Physics (DiS-Phy): Learning physics from home through stories 10

Digital storytelling of Physics (DiS-Phy): Learning physics ...

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10th National Physics Seminar, SNF 2021

作者： Sanjaya, L.A. Putri, E.A. Wibowo, F.C. Robby, D.K. Puspa, R.W.D. Pertiwi, W.A. Sianipar, L.K. Qoiriyah, W. Sitompul, H. Department of Physics Education Universitas Negeri Jakarta Jakarta13220 Indonesia Department of Management Education Universitas Negeri Jakarta Jakarta13220 Indonesia Kartika VIII-1 Senior High School Jakarta Indonesia Management of Islamic Education STAI AHSANTA Jelutung Kota Jambi Jambi36125 Indonesia Department of Physics Education Universitas Pelita Harapan Tangerang15811 Indonesia Informatics Engineering Study Program Faculty of Engineering Sheikh Yusuf Islamic University Tangerang Indonesia

This study aims to develop a product such as "Digital storytelling of Physics (DiS-Phy)" that can be used as a physics’ educational media for distance learning (PJJ) on magnetic field material. DiS-Phy developed as a digital storytelling media which is able to combine several learning media such as writing, pictures and learning videos in one medium. The developed DiS-Phy also equipped with scientific literacy questions. DiS-Phy can be accessed on all types of distance learning devices such as smartphones, laptops and tablets that are connected to the internet. DiS-Phy including the type of research and development (Research & Development) which refers to the ASSURE model. The result of validation test shows the percentages of 91,07%, according to subject-matter expert, 93,16%, according to media expert and 87,50% according to learning expert. DiS-Phy also tested by 4 physics teachers at senior high school in Jakarta that achieved 92,57% points that make this product has been qualified as a worthy physics’ distance learning device. Also of 35 as respondents in this study shows the percentages of 87,48% points that make this product worthy to use as an educational media. Based on the results, it can be concluded that the DiS-Phy has been qualified as a worthy physics’ distance learning device for teachers and students. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： E-learning

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Preliminary study on Acoustical Characteristics of Sago Midrib Composite 5

Preliminary study on Acoustical Characteristics of Sago Midr...

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5th International Symposium on Material, Mechatronics and Energy 2018, ISMME 2018

作者： Kusno, Asniawaty Asriani, Sherly Kamil, Kusno Jamala, Nurul Department of Architecture Faculty of Engineering Hasanuddin University Indonesia Study Program of Architecture Engineering Faculty Khairun University Indonesia Mechanical Engineering Department Engineering Faculty Universitas Muslim Indonesia Indonesia

This research is a preliminary study on the use of sago midrib as an acoustic material. This study aims to determine the sago as acoustic material by measuring the absorption coefficient using (impedance tube method) of 100 Hz-1.6 KHz frequencies. The results of measurement were analyzed and compared with common acoustic material available on market as reference. From the measurement of the sago midrib composite, absorption coefficient has fluctuated from low to high frequencies as the absorption coefficient of reference material is found to be more stable. © Published under licence by IOP Publishing Ltd.

关键词： Acoustic impedance

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