Series:Advances in Physics Research
Proceedings of the 4th International Seminar on Science and Technology (ISST 2022)
Nov Irmawati Inda, Darmawati Darwis, Elisa Sesa, Pasjan Satrimafitrah
Swastya Rahastama, Menasita Mayantasari, Tania Wulandari, Rajendra Salim
The scattering of radiation rays from Co-60 affects the absorbed dose received by cancer cells and healthy organs. Herein, we tried to investigate the distribution of absorbed dose with skin-to-source distance (SSD) variations inside the cervix area due to irradiation of Co-60 from different locations....
Numerical Research on the Impacts of Composite Panel Ballistic Using Perforated Plate for Combat Vehicle
Bakri Bakri, Muhammad Syaiful Fadly, Khairil Anwar, Sri Chandrabakty, Mustafa, Naharuddin, Fauzan
In this research, a layered composite that utilizes a perforated plate was developed as a bullet-resistant material that works by breaking the tip of the projectile at the beginning of penetration and reducing the weight of the material. A Composite configuration with 3 layers with a steel plate was...
Analysis Seepage Under Pandanduri Dam Body Based on the Electrical Resistivity Tomography (ERT) Survey and the SEEP/W Program
Denis Mararis, Heru Hendrayana, Pulung A. Pranantya
The utilization of water resources for various necessities keeps increasing from year to year, as the impact of the growth of population and the development of the activity. Dams have great benefits and keep great potential danger and risk of physical damage and failure function. This study aims to determine...
Dewi Idamayanti, Achmad Rochliadi, Bambang Sunendar Purwasasmita, Brian Yuliarto, Ahmad Nuruddin
This study investigated the properties of mesocarbon anodes in the half-cell of sodium-ion batteries. The behavior of mesocarbon was examined using electrochemical methods. Cyclic voltammetry (CV) was applied with various scan rates to reveal the anodic-cathodic voltage and peak current. The CV profile...
Investigation of Metal Contact by Utilizing Combination of Current Attenuation Survey (CAS) and Ground Penetrating Radar (GPR) Methods on Congested Urban Gas Pipeline
Sufi Hamdan Mazida, Ari Kurniawan, Fajar Rahman, Vinda Puspasari, Tedi Kurniawan, Isdaryanto Iskandar, Seiful Huda
This paper reports a field investigation of the metal contact phenomenon in gas pipelines buried underneath urban areas by utilizing the combination of current attenuation survey (CAS) and ground penetrating radar (GPR) methods. CAS examined pipeline integrity based on standard NACE SP0502 and utilized...
Fabricating and Characterizing Composite Ceramic Foam-Based Porous Material Utilizing a Mixture of Micro Cellulose for Sound Absorber Application
Agus Rino, Iwan Prasetiyo, Bambang S. Purwasasmita
Fabricating porous material can be done using various raw materials, one of them uses plant-based natural fiber to form composite materials. In this research, the natural fibers of sugarcane waste are synthesized into micro cellulose. Subsequently, the micro cellulose is developed as a filler for the...
Geomagnetic Data Interpretation Using 2D Modeling of Subsurface Rock Layer Structures in the Palu Valley Province, Central Sulawesi
Rustan Efendi, Sandra, K Maulidin, Henry Leopatty
Interpretation of the subsurface rock layer structure model has been carried out using geomagnetic data in the Palu Valley. Geomagnetic data is obtained through field measurements using the Proton Precision Magnetometer. Modeling is done using total magnetic field intensity data. The research objective...
Identification of the Distribution of Andesite Rocks Using the Geoelectric Method of Resistivity in Buluri Village, Ulujadi District, Palu City
Toni Amali, Moh. Dahlan Th Musa, Sandra, M. Rusydi, M. Rusli, Wa Ode Awaliah
Research has been carried out on the identification of andesite rock distribution using the geoelectric method of resistivity in Buluri Village, Ulujadi District, Palu City. This study aims to identify the distribution of andesite rocks using the Automatic Array Scanning (AAS) measurement method with...
Microzonation Mapping in Supporting Construction Plan, New Capital City of Indonesia (Case Study: Sepaku Sub-district, Panajam Paser Utara Regency)
Rahmania, Rasmid, Meidi Arisalwadi, Febrian Dedi Sastrawan
Determination of East Kalimantan, particularly Sepaku Sub-District, Panajam Paser Utara Regency, and Kutai Karta Negara Regency as the New Capital City of Indonesia requires an in-depth and comprehensive study of various aspects, including the natural disaster of the earthquake. Based on earthquake records...
Meidi Arisalwadi, Febrian Dedi Sastrawan, Rahmania, Widyana Namira Nur Habibah
One of the areas in Indonesia that are at risk of being affected by disasters is East Kalimantan. East Kalimantan is designated as IKN (State Capital City) by the government of the Republic of Indonesia. East Kalimantan was chosen as the new IKN due to its geographical location in the middle of the Indonesian...
Determination of Aquifer System Using Resistivity Method in Pekalongan City and Surrounding Areas, Central Java, Indonesia
Meitharisha F. Hasani, Heru Hendrayana, Ahmad Taufiq
The increasing population growth and rapid development of Pekalongan in recent years have caused an increase in clean water needs that cannot be fulfilled from surface water due to pollution problems, so people prefer to use groundwater. Therefore, it is necessary to determine the aquifer system to know...
L. Mahmudin, Y. Ndora, M. S. Ullum
Research has been conducted on the analysis of nickel ferrite (NiFe2O4) nanoparticles based on iron sand. The purpose of this study was to produce nickel ferrite nanoparticles and to determine the physical and optical properties of nickel ferrite nanoparticles. In this study, the synthesis of nickel...
Improvement of Defense Scheme Operation by Considering Load Profile of Interbus Transformer for Sub Java Electrical System
Alfia Putri Wulandari, Mochammad Facta, Susatyo Handoko
The electrical blackout on August 4, 2019, in several areas of Jakarta and surrounding areas took a long time to recover and the vital loads lose electrical supply. This power outage indicates that there is a weakness in the electrical defense scheme. Based on the conventional standard, when the frequency...
The Effect of Solar Power Generating in Low Voltage Network on the Quality of Electricity to Costumers Side, A Case Study 4 kWp Photovoltaic at Salt Storage
Afeef Kurnia Rahmawan, Mochammad Facta, Susatyo Handoko
Generating electricity using fossil fuels can increase global warming. To reduce the use of fossil fuels, the implementation of Renewable Energy becomes a choice. One example is a Photovoltaic (PV) installation connected to a grid. The addition of on-grid PV on the load side may provide an undesirable...
Forecasting Short-Term Electrical Loads Using Support Vector Regression with Gaussian Kernel Functions
La Ode Muhammad Yusuf, Susatyo Handoko, Iwan Setiawan
Power outages that sometimes still occur cause disruption of economic activity around the area, especially the city of Bau-bau, it is necessary to forecast the electrical load in order to determine the characteristics of the electrical load in the area. Short-term electrical load forecasting is used...
Oil Content and Free Fatty Acid Prediction of Oil Palm Fresh Fruit Bunches Using Multispectral Imaging and Partial Least Square Algorithm
Minarni Shiddiq, Roni Salambue, Zulfansyah Zulfansyah, Jahrizal Jahrizal, Ikhsan Rahman Husein, Sinta Afria Ningsih, Galef Alfahrezi
Multispectral imaging has many applications in agriculture, such as the prediction of the internal qualities of fruit and vegetables. Multispectral is preferable to Hyperspectral imaging for fast in-line sorting and grading machine vision due to fewer wavelength bands applied. Oil palm fresh fruit bunches...
Danang Hendrawan, Iwan Setiawan, Susatyo Handoko
With population growth which increases every year, it will also be accompanied by a reduction in natural resources and energy. These natural resources are in the form of food needs. With the increasing demand for food and energy needs, there must also be the development of technology in the field of...
Study of Industrial Liquid Waste Pollution Using Geoelectrical Method in Sukaregang, Garut, West Java
Sasqia Nurul Fauziah, Nurhasan, Sofiana Herman, Randi Rusdiana, Howard Situmoran, Syamsul Hidayat
The rapid development of industry causes more and more waste to be produced and can lead to pollution. One of those is the pollution of the leather tanning industry in Sukaregang, Garut, West Java. Tannery waste is disposed of directly into the river area. Seepage of waste below the surface from river...
Land Subsidence Analysis Based on 2D Resistivity Modelling of DC Resistivity Method in Curugpanjang, Banten
Syamsul Hidayat, Nurhasan, Enjang Jaenal Mustopa, Dini Fitriani, Randi Rusdiana, Howard Situmorang, Sasqia Nurul Fauziah
Land Subsidence is a phenomenon of subsidence of the land surface compared to the reference point. This phenomenon can be caused by natural factors, groundwater extraction, and building factors. Geoelectrical method was used to analyze the subsurface conditions in Curugpanjang consisting of four lines....
Electrodeposition of Cobalt on the Carbon Surface from Cobalt Sulfate Solution by Cyclic and Linear Voltammetry in Developing Selective Electrodes for Phosphate Ion
Siswoyo Siswoyo, Istimahillah Mawaddah, Yudi Aris Sulistiyo
Phosphorus in nature is very important both in water and in soil. The form of the compound phosphate has become an important study in agriculture and the environment. Potentiometry is a recommended effective method to measure or monitor ion phosphate’s concentration in nature compared to the spectrometric...
Putri Yeni Aisyah, Fadiya Rofilia
The inhibiting factors for plant and fish growth in aquaponics systems are farmers who never control and monitor the quality of Dissolved Oxygen (DO) levels and the degree of acidity/Power of Hydrogen (pH) of water properly. Uncontrolled and monitoring of the quality of pH and DO in water properly and...
Improving the Value of Spent Coffee Ground by Converting Carbohydrates into Sugars by Saccharomyces cerevisiae to Produce Bioethanol
Syahruddin Syahruddin, Hayyun Lisdiana, Erdawati Erdawati
Spent coffee grounds contained 45% carbohydrate, 26% lignin, 13% lipid, and 13% protein. To improve the value of spent coffee grounds in a sustainable way, a study was done on how to convert carbohydrates into fermentable sugars which could be used to make value-added products. To accomplish this, a...
Fabrication and Characterization of Microcapsules Containing Eel Fish Oil (Anguilla marmorata (Q.) GAIMARD)
Yonelian Yuyun, Nurwahidah M. Pide, Asriana Sultan, Jamaluddin
Eel (Anguilla marmorata (Q.) Gaimard) oil consists of unsaturated fatty acids such as Omega-3 and Omega-6, which quickly oxidize to become rancid under the influence of oxygen be inhibited by microencapsulation by the spray drying method. This study was designed to identify the microcapsule characteristics...
Potential of Actinomycetes from Bora Hot Springs Central Sulawesi to Produce Antibacterial Compounds
Abd Rahmat Sapa, Ayu Lestari, Meryany Ananda, I. Nengah Suwastika
Actinomycetes are Gram-positive bacteria that could produce antibacterial compounds, and it is able to survive in high temperatures environment such as hot springs. In this study, Actinomycetes were isolated from Bora hot springs before, characterized, and determined their potential in – other antibacterial...
Isolation and Characterization of Endophytic Actinomycetes on Onion Root (Allium Ascalonicum L.) Palu Cultivar
Ayu Lestari, Abd. Rahmat Sapa, Meryany Ananda, I. Nengah Suwastika
Endophytic microbes are microbes that during their entire life cycle are in plant tissues. Actinomycetes is one of the endophytic microbes that produce secondary metabolites and can be found in the roots of onions. This study aimed to isolate, characterize and determine the growth rate of endophytic...
Isothermal Adsorption Model of Reduction of Ni2+ Ion by Chitosan Membrane of Rice Snail Shell (Pilla ampullaceal)
Dwi Juli Puspitasari, Nurlaila L. Tapo, Arif Ahmadi, Prismawiryanti
Heavy metals are detrimental to living organisms and ecosystems because they are non-biodegradable and accumulate in the environment and food chain. The research objective was to determine the maximum contact time, pH, and the isothermal adsorption model for the adsorption of Ni2+ ions by the chitosan...
Sukhbaatar Batchuluun, Kentaro Yasui, Hideki Matsune, Koichiro Shiomori, Shiro Kiyoyama, Ochirkhuyag Bayanjargal
Microencapsulation technology has been used in a variety of fields including materials such as buildings, walls, industrial, medicine, and cosmetics. One of the most active research on microencapsulation is microstructure formation. Important properties of microcapsules such as releasing rate of active...
Exploration of the Potential of Dandang Gendis Leaf Extract (Clinacanthus nutans L) as an In Vitro Antidiabetic (A-Glucosidase Enzyme Inhibition Test) and In Vivo (Decrease Glucose Levels and Glut-2 Expression in Mice)
Artati, Ahyar Ahmad, Abdul Karim, Sofa Fajriah, Harningsih Karim, Nuradi, Arfiani Nur, Ummi Zahra, Syahida Djasang, Muhammad Nasir, Siti Nurul Fajriah
Diabetes mellitus is thought to play a role in increasing free radicals, de-creasing antioxidants and triggering oxidative stress, and causing damage to GLUT 2. GLUT 2 on the pancreatic cell membrane is responsible for the transport of blood sugar in mice which will stimulate insulin secretion. Dandang...
Influence of Fibres on the Strain Hardening Behaviour of Ultra-High-Performance Geopolymer Concrete: A Review
Shimol Philip, M. Nidhi
Continuous cement manufacturing has increased the percentage of CO2 emitted into the air, thereby increasing the problem of global warming and its damaging effects on the environment. Therefore, adopting a more sustainable strategy to replace conventional concrete has become essential. Geopolymer concrete...
Phytochemical Analysis and Escherichia coli Anti-bacteria Activity of Teak (Tectona grandis Linn. f) Leaves Extract
Abdul Hapid, Ariyanti Ariyanti, Erniwati Erniwati, Muthmainnah Muthmainnah, Zulkaidhah Zulkaidhah, Hamka Hamka, Rita Mayang Sari, Asniati Asniati
Teak (Tectona grandis L.f.) is a medicinal plant that has been traditionally used by people around the forest as medicine. Teak leaves contain antibacterial compounds. This study aims to find out what compounds are contained in teak leaves extract and test antibacterial activity against E. coli bacteria....
Effect of Sintering Temperature on Hydroxyapatite Yield of Cuttlefish (Sepia sp.) Using the Wet Deposition Method
Abd Rahman Razak, Agnes Stasya, Ruslan, Hardi Ys
Hydroxyapatite, abbreviated as HAP (Ca10(PO4)6(OH)2), is the main component in bone structure which is osteoconductive. The HAP either synthetic or natural source, is widely used in biomedicine especially orthopedics or dental repair. In this study, HAP was synthesized using calcium and phosphate. Calcium...
Change Point Detection in Time Series Data of Annual Maximum Daily Rainfall in Mamminasata Region of South Sulawesi, Indonesia
Wahidah Sanusi, Sahlan Sidjara, Sudarmin Patahuddin, Muhammad Danial
This research aim is to detect the change point year of annual maximum daily rainfall at eight rainfall stations in the Mamminasata region for the period 1989 to 2020. The Mamminasata region covers Makassar City, Maros District, Sungguminasa/Gowa District, and Takalar District. Research data were obtained...
Khaira Umi, Junaidi, Fadjryani
The Gender Inequality Index (GII) is an index that describes the failure of human development achievement due to the inequality of gender that is measured by several aspects such as health, empowerment, and labor market access. The Geographically Weighted Panel Regression (GWPR) is a developed model...
Jihad Nurul Islami, Rohis Rachman, Yayang Matira, Junaidi, Fadjryani
An earthquake is a shaking incident of the earth due to the movement or shift of rocks in the lithospheric part. This occurs suddenly due to the movement of tectonic plates. Central Sulawesi is an area of Sulawesi Island that has a high level of seismicity. This is because Sulawesi Island has many active...
Implementation of the Gath-Geva Clustering Algorithm in the Clustering Districts/Cities in Central Sulawesi Based on Public Health Development Indicators
Nichen Grasya Peso’a, Rais, Nurul Fiskia Gamayanti
Public health development indicators are a health indicator set that can describe health problems. The health indicators set can, directly and indirectly, increase longevity and healthy life expectancy. Central Sulawesi was listed as the sixth province in Indonesia with the lowest public health development...
Edy Saputra Rusdi, Nur Hilal A. Syahrir, A. Muh. Amil Siddik, Supri Bin Hj Amir, Wahyudi Rusdi
Many potential medicines have been discovered from marine natural products (MNPs). It indicates that marine compounds are essential sources in drug development and discovery. Although many marine compounds show particular biological activity, few are recorded as antibacterial compounds. Therefore, finding...
Fransiskus Fran, Nilamsari Kusumastuti, Yuni Elisa, Steven
Given V be a set of vertices on a graph G. A set D ⊆ V, is dominating set of G = (V, E) if all the vertex that is not in the set D are neighbors to at least one vertex of D. The smallest number of elements in D is known as the domination number. A set D ⊆ V(G) is called...
The Ambulance Route Efficiency for Transporting Patients to Referral Hospitals Based on Distance and Traffic Density Using the Floyd-Warshall Algorithm and Google Traffic Assistance
Clarisa Yovanda Priliana, Isnaini Rosyida
The route of delivering patients using an ambulance is important thing because it relates to a person’s life. It Requires finding an efficient route for patient delivery so that it can facilitate the ambulance journey. In this study, the ambulance route from the public-health centers to the referral...
Measuring the Contribution of Batik Education Treatment Due to the Optimal Control of the Dynamic Model of Drug Addicts
A. L. Jaya, R. Ratianingsih, M. Abu, S. Saldi, D. Aryanto, N. Nacong, I. Setiawan
Central Sulawesi placed as the 4th of addicted drugs highest number in Indonesia. This paper proposes batik education treatment as an alternative for BNNK Palu in conducting its controlling program. There are three running programs; that are education ( C ...
Iman Setiawan, Junaidi, Fadjryani, Fika Reski Amaliah
The conversion of agricultural land into residential areas has resulted in a decrease in the availability of agricultural land, so it is necessary to implement an intensive agricultural pattern with a high level of productivity. One of them is by applying a vertical farming pattern or known as verticulture....
Sri Andala, Hizir Sofyan, Kartini Hasballah, Marthoenis
Hypertension means the increase of systolic and diastolic blood pressure upper 140 mmHg and 90 mmHg, respectively. Hypertension is a major problem in health that can be caused sudden death in patients. Globally the percentage of adherence towards HTN pharmacological treatment is poor due to the faint...