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Analysis of chemical compound in essential oil from clove stem using the FTIR and GCMS methods

AIP Conference Proceedings 2023年第1期2738卷

作者： Hermin Pancasakti Kusumaningrum Galih Wiji Agung Fakhri Santo Khoirudin Lailatul Khoiriyah Ardian Fikri Amrullah Farah Hanifah Handika Arya Listyanto Muhammad Zainuri I. Nyoman Widiasa Indra Gunawan Biotechnology Study Program Biology Department Faculty of Science and Mathematics Diponegoro University Jl. Prof. Soedharto SH. Tembalang Semarang 50275 Indonesia Department of Chemical Engineering Faculty of Engineering Diponegoro University Jl. Prof. Soedharto SH. Tembalang Semarang 50275 Indonesia Chemistry Department Faculty of Science and Mathematics Diponegoro University Jl. Prof. Soedharto SH. Tembalang Semarang 50275 Indonesia Marine Laboratory Faculty of Fisheries and Marine Sciences Diponegoro University Jl. Prof. Soedharto SH. Tembalang Semarang 50275 Indonesia

Clove (Syzigium aromaticum) is an essential oil-producing plant which is widely found in Indonesia. Essential oil was made from it flower buds, leaves and stems for toothpaste, soaps, cosmetics, perfumes and cigarettes industries. Clove oil has been used in medicinal purposes for relieving pain, treating infection, easing digestive upset, dental and topical application. The objectives of the GC-MS analysis is to measure the type and content of compounds present in the clove stem sample, while the FT-IR analysis is to obtain the infrared spectrum on the clove stem sample through emission or absorption of solids, liquids. and gases in the sample. The chemical functional groups that were read through FT-IR on stem clove oil indicated that it contained aromatic compounds in the form of eugenol and eugenol acetate. The eugenol compound was the main component of the clove stem. The results of GC-MS analysis showed the chemical composition of clove oil consists of 28 compounds with the dominant components of clove oil are eugenol and caryophyllene (93% and 4.80%).

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Thermogravimetric investigation of Reutealis Trisperma (Blanco) airy shaw and iron sand as bed material at different heating rates pyrolysis

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Journal of Physics: Conference Series 2020年第1期1450卷

作者： Rajendra, I M Winaya, I N S Ghurri, A Wirawan, I K G Department of Mechanical Engineering Politeknik Negeri Bali Kampus Bukit Jimbaran Bali Indonesia Study Program of Mechanical Engineering Faculty of Engineering University of Udayana Bali Indonesia Study Program of Mechanical Engineering Faculty of Engineering University of Udayana Bali Indonesia

This study observed the effect of bed material in the pyrolysis process. Also, other parameter such as the heating rate have been observed. The biomass studied is Sunan Candlenut cake. This biomass is a potential commodity as a producer of biodiesel. Through the method of mechanical press and esterification, it will leave waste in the form of a cake that still contains crude oil. Trapped oil can be converted into bio-oil through the pyrolysis technique. Parameters that affect the pyrolysis process include the addition of bed material and heating rate. Pyrolysis of this candlenut cake has been tested to determine the amount of activation energy. Heating rates are varied to 5, 10 and 20 K per minute and bed material used is iron sand. The testing instruments uses Thermogravimetric Analysis (TGA). The results show that the lowest activation energy of 15.497 [KJ/mol] is achieved when added iron sand at the heating rate of 10 K per minute.

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The study of Coastline Changing and Total Suspended Solid Distribution Based on The Remote Sensing Data in Teluk Lamong Multipurpose Port Terminal

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IOP Conference Series: Earth and Environmental Science 2021年第1期698卷

作者： Widi Agoes Pratikto Ahmad Fitriadhy Muhammad Ilham Maulana Abiyani Choirul Huda Destyariani Liana Putri Liany Ayu Simatupang Nazariano Rahman Wahyudi Rendatiyarso Laksono Anggie Vibriyanti Rossari Dewi Ocean Engineering Departement Faculty of Marine Technology Institut Teknologi Sepuluh Nopember Surabaya 60111 Indonesia Department of Maritime Technology Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu Malaysia Ocean Engineering Study Program Institut Teknologi Kalimantan Kalimantan Timur 76127 Indonesia

Looking forward to the abovementioned conditions, this research is needed to elaborate on the effects of the reclamation to the marine resources in Teluk Lamong Multipurpose Port Terminal as the reclaimed product. In order to describe the impact of the port development, this study will analyze the shoreline changing, the current pattern modeling, as well as the Total Suspended Solid (TSS) modeling using the remote sensing data. The several numbers of expected objectives through this study are to get the set of scientific information on the shoreline changing in Teluk Lamong Multipurpose Port Terminal in the year of 2012 and 2020, to get the figure of current pattern in Teluk Lamong Multipurpose Port Terminal in the year of 2012 and 2020, and to elaborate TSS concentration through the modeling approach in Teluk Lamong Multipurpose Port Terminal in the year of 2012 and 2020. Hence, there is a set of methodologies and tools to cooperate with the information before and after the reclamation. The use of the Digital Shoreline Analysis System (DSAS) software to analyze coastline conditions. The using of Mike 21 to analyze the current pattern and TSS concentrations. In addition to the TSS analysis, it will also need a set of remote sensing data from the Google Earth Engine (GEE). The modeling and calculation give information about the End Point Rate (EPR) values and TSS values. The EPR values are 107.5 m/year, 59,625 m/year and 10,375 m / year. The TSS values are 0-20 mg/L, 20.1-40 mg/L, 40.1-80 mg/L, 80.1-120 mg/L and >120.1 mg/L. Moreover, the result shows the different values among the length of coastline, the current pattern, and TTS in the years 2012 and 2020. The difference in the coastline reaches 950 m at this latest 8 years. While it also brings the changing to the current pattern and sediment transport which show through its current velocity and sediment content per liter of seawater during high and low tide accordingly.

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Development of microcontroller trainer kit as a teaching aid for electronics course

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AIP Conference Proceedings 2024年第1期3115卷

作者： Adhan Efendi Armansyah Maria Mahardini Sakanti Ary Surjanto C. Bambang Dwi Kuncoro Graduate Institute of Precision Manufacturing National Chin-Yi University of Technology No. 57 Section 2 Zhongshan Rd Taiping District Taichung City Taiwan Mechanical Engineering Study Program Faculty of Engineering Universitas Pembangunan Nasional Veteran Jakarta Jalan RS. Fatmawati Raya Pondok Labu Cilandak South Jakarta City Jakarta 12450 Indonesia Department of Refrigeration and Air Conditioning Engineering Politeknik Negeri Bandung Polban Jl. Gegerkalong Hilir Ciwaruga Kec. Parongpong Kabupaten Bandung Barat Jawa Barat 4001 Indonesia Department of Refrigeration Air Conditioning and Energy Engineering National Chin-Yi University of Technology No. 57 Section 2 Zhongshan Rd Taiping District Taichung City Taiwan

This research aims to develop educational and learning support facilities by developing teaching aids for instructors and practical training to enhance the capabilities of laboratories. The developed exercise materials will be used in the electronics laboratory activities to equip vocational students (Diploma 3 and Diploma 4) with practical skills and knowledge of applied electronics. Microcontroller-based teaching materials designed systematically and interactively developed to support the applied electronic system. As a result, the students learn quickly while installing and programming applied electronic hardware applications. There are exercise manuals for up to seven exercise competencies of electronics laboratory activities. Based on the evaluation results from the expert group member and the laboratory chairman, the developed teaching aids are convenient for electronics laboratory classes. Based on student responses using the developed teaching aids, 43% of students mentioned that the microcontroller teaching laboratory kit and hands-on instructions were interactive, easy to use, understandable, and practical, along with the required electronic instructions. They indicated that the material was presented continuously. Meanwhile, 64% of students report that the microcontroller teaching laboratory kit and hands-on instructions motivate, contribute to comprehension, provide convenience, and increase student attention in electronics laboratory activities.

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Analysis of Crude Palm Oil Supply Chain using Food Supply Chain Network (FSCN): A Case study

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IOP Conference Series: Materials Science and engineering 2020年第1期1003卷

作者： Nazaruddin Matondang Juliza Hidayati Buchari Erik Permana Arifin Jeffrey Panama Industrial Engineering Master and Doctoral Study Program Faculty of Engineering Universitas Sumatera Utara Department of Industrial Engineering Faculty of Engineering Universitas Sumatera Utara

Palm oil industry is one of the leading industrial sectors in Indonesia. In order to fulfill CPO demand as well as increasing of CPO sales, a research to analyse the supply chain flow of CPO was conducted. This research was conducted in ABC company, which is a privately owned business entity engaged in oil palm plantations located in South Tapanuli Regency, Indonesia. Analysis of supply chain had been done by using Food Supply Chain Network (FSCN) to define the integration of key business processes provided by original suppliers that provide products, services, and information from end users to customers and other stakeholders. Result of this research clearly defined the supply chain process with a clear flow of material, information and finance. The key process of CPO supply chain is the distribution of raw materials of CPO, namely fresh fruit bunches (FFB) which were collected from privately owned oil palm plantations and nearby community gardens, then processed in mills, deliver to storage tank, and export to customers. Analysis of this case study provided a clear description of CPO supply chain and may let further researchers to easily examine the potential risks at each stages and actors of CPO supply chain.

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Effect of liquid fertiliser for soil quality and coffee plants's vegetative growth

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IOP Conference Series: Earth and Environmental Science 2020年第1期475卷

作者： B Rahadi N Lusiana C Sriwulandari Study Program of Environmental Engineering Faculty of Agricultural Technology Universitas Brawijaya Malang Indonesia Student of Study Program of Environmental Engineering Faculty of Agricultural Technology Universitas Brawijaya Malang Indonesia

The aim of this research was to determine the influence of liquid fertiliser that comes from the waste of dairy farms for soil quality and vegetative growth of coffee plants. There are three kinds of fertilization intensity (treatment) that is without fertilization (K0), one-times fertilization (C1) and two-times fertilisation (C2). The results were analysed using Group Randomized Design as experimental design; ANOVA and Tukey Test 5% as analysis method. The results showed that the treatment affects soil quality. The treatment also gives a significant influence (p < 0.05) at the height rate of coffee plants in the 2nd week and the canopy diameter rate of coffee plant in the 2nd and 4th week. The results of this research are expected to provide input especially for cattle farmers and coffee planters who want to integrate their livestock and their crops.

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Determination pollution load capacity of Ngrowo River as wastewater receiver from hospital activities

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IOP Conference Series: Earth and Environmental Science 2020年第1期475卷

作者： N Lusiana B Rahadi Y Anggita Study Program of Environmental Engineering Faculty of Agricultural Technology Universitas Brawijaya Malang Indonesia Student of Environmental Engineering Study Program Faculty of Agricultural Technology Universitas Brawijaya Malang Indonesia

Industrialization and domestic activities very potentially to contribute water pollution addition especially into a river. One of domestic activities that may produce wastewater is a hospital activity. Public Regional Hospital in Tulungagung is located at Kedungwaru that will developed in order to further support the existing infrastructure. Assessment towards water quality and load pollution capacity of Ngrowo River as wastewater receiver is very important before hospital development began. The method used in this research was mass balance method, pollution index to determine of water pollution status based on the parameters of temperature, pH, total suspended solids (TSS), dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD), nitrate and phosphate. The quality parameters obtained in this study were compared with the class II water quality standard. The maximum pollutant load was calculated to determine the pollution load capacity. The result show that water quality of Ngrowo River was categorized in low pollution (around 3.75 – 3.99 for index pollution) based on class of II of water quality standard. Load pollution capacity at downstream have exceeded 28,673.3 kg/day for BOD and 34,339.3 kg/day for COD in existing condition. Based on the findings in this study, it is recommended that hospitals are obliged to have wastewater treatment plant installed. Such approach is critical to maintain the quality of surroundings environments as well as to prevent water pollution to occur.

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Phosphotungstic acid (H₃PW₁₂O₄₀)-loaded onto titanium porous montmorillonite heterostructure for the effective enhanced kinetics and thermodynamic conversion of citronellal

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Case Studies in Chemical and Environmental engineering 2025年 11卷

作者： Fatimah, Is Yahya, Amri Rubiyanto, Dwiarso Sagadevan, Suresh Oh, Won-Chun Doong, Ruey-an Department of Chemistry Faculty of Mathematics and Natural Sciences Universitas Islam Indonesia Kampus Terpadu UII Jl. Kaliurang Km 14 Sleman Yogyakarta Indonesia Nanomaterials and Sustainable Chemistry Research Centre Chemistry Laboratory Universitas Islam Indonesia Kampus Terpadu UII Jl. Kaliurang Km 14 Sleman Yogyakarta Indonesia Chemistry Study Program Nusa Bangsa University JL. KH Sholeh Iskandar KM.4 Tanah Sareal Bogor 16166 Indonesia Nanotechnology & Catalysis Research Centre University of Malaya Kuala Lumpur 50603 Malaysia Department of Advanced Materials Science and Engineering Hanseo University Seosan-si 356-706 South Korea Institute of Analytical and Environmental Sciences National Tsing Hua University 101 Sec 2 Kuang Fu Road Hsinchu 30013 Taiwan

In present work, nanocomposite of phosphotungstic acid (H3PW12O40)-loaded onto titanium-porous clay heterostructure (PTA/Ti–PCH) was prepared using natural montmorillonite as parent material (Mnt). Characterization o... 详细信息

In present work, nanocomposite of phosphotungstic acid (H₃PW₁₂O₄₀)-loaded onto titanium-porous clay heterostructure (PTA/Ti–PCH) was prepared using natural montmorillonite as parent material (Mnt). Characterization of the material was performed using X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy-energy dispersive X-ray fluorescence, transmission electron microscopy, Fourier-Transform Infra-Red spectroscopy, and solid acidity measurement. The material was examined as superacid catalyst in citronellal conversion into isopulegol by varied reaction conditions. Kinetics and thermodynamic studies of catalyzed reaction revealed the role of increased total surface acidity and the Lewis to Brønsted to enhance the reaction conversion and selectivity. Thermodynamic study demonstrated a lower activation energy of the reaction over PTA/Ti–PCH compared to Ti–PCH. A 100 % conversion was exhibited by the sample during 120 min of the reaction at 90°C, and the sample also demonstrated activity at room temperature. Reusability of the sample was expressed by a maintained conversion until 5th cycle. Conclusively, the prepared material showed a potency to be developed for heterogeneously acid-catalyzed organic reactions. © 2025 The Authors

关键词： Acid Citronellal Clay-based nanocomposite Heterogeneous catalysis Porous clay heterostructure

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Fat, water and ash content in Chlorophyceae, Rhodophyceae and Phaeophyceae macroalgae at Sepanjang Beach, Yogyakarta, Indonesia

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IOP Conference Series: Earth and Environmental Science 2021年第1期744卷

作者： H B Setyorini A Puspitasari Study Program of Marine Engineering Faculty of Natural Resources Technology Institute Technology of Yogyakarta Jl. Kebun Raya No. 39 Rejowinangun Kotagede Sub-District Yogyakarta 55171 Indonesia Study Program of Industrial Engineering Faculty of Industrial Technology Institute Technology of Yogyakarta Jl. Nyi Pembayun No. 23 Prenggan Kotagede Sub-District Yogyakarta 55172 Indonesia

Communities in Sepanjang Beach have utilized the macroalgae as main ingredients in various special processed products. The objective of this study was to analyze the content of fat, water, and ash in Chlorophyceae, Rhodophyceae, and Phaeophyceae macroalgae at Sepanjang Beach, Yogyakarta, Indonesia to support optimization of macroalgae processed products. This research was conducted at Sepanjang Beach, Gunungkidul District, Yogyakarta, Indonesia in August 2020. A method of descriptive exploratory was used in this research. Analysis of fat content, water, and ash content was carried out on Ulva lactuta, Palmaria palmata, Sargassum crassifolium, Gelidium spinosum, Gelidiella acerosa, and Gracilaria verrucosa quantitatively using Soxhlet method for content of fat, the thermogravimetric method for content of water, and gravimetric method for content of ash. The results showed that the highest fat, water, and ash content was found in U. lactuta in the central of Sepanjang Beach 0.174%, S. crassifolium in the eastern 89.460%, and U. lactuta in the eastern 8.715% respectively.

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Hairpin BPF filter design for onboard unmanned aerial vehicle (UAV) datalink system

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AIP Conference Proceedings 2023年第1期2941卷

作者： Yanuar Prabowo Naila Najati Yanuar Firmansyah Kandi Rahardiyanti Iwan Nofi Yono Putro Teguh Praludi Cahya Edi Santosa Hendi Santosa Gunawan Setyo Prabowo Research Center for Aeronautics Technology National Research and Innovation Agency Bogor Indonesia Research Center for Satellite Technology National Research and Innovation Agency Bogor Indonesia Research Center for Rocket Technology National Research and Innovation Agency Bogor Indonesia Center for Data and Information National Research and Innovation Agency Kebumen Indonesia Research Center for Telecommunication National Research and Innovation Agency Bandung Indonesia Electrical Engineering Study Program Faculty of Engineering University of Bengkulu Bengkulu Indonesia

The datalink system is required for communication between the UAV (Unmanned Aerial Vehicle) to the GCS (Ground Control System). In this research, a hairpin BPF (Band Pass Filter) filter will be designed to develop block RF components in the UAV (Unmanned Aerial Vehicle) datalink system. The filter is designed at specific ISM (Industrial, Scientific, Medical) for frequency of 2.401-2.483GHz according to WiFi application with standard 802.11 b/g/n. The UAV (Unmanned Aerial Vehicle) datalink system with this frequency can pass telemetry data and payload data in one frequency channel. NPC H220A substrate with a dielectric constant of 2.18 and a thickness of 1.2 mm was used to design the BPF filter. The filter simulation results show the S11 values ranging from <-18.38 dB to-20dB at a frequency of 2.401GHz – 2.483GHz. Insertion loss values are obtained from <-1.4 dB to 0.76 dB. It is hoped that this filter design can be used for RF system applications on the UAV (Unmanned Aerial Vehicle) communication datalink that is being developed.

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