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Kab. aceh selatan,
Aceh
INDONESIA
Jurnal Inotera
Published by Politeknik Aceh Selatan
ISSN : 25487574     EISSN : 25811274     DOI : -
Core Subject : Science, Engineering,
Computer Science & IT Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Arjuna Subject : -
Articles 301 Documents
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Pengaruh Posisi Penyinaran Radiasi Berkas Foton di Titik Axis dan Tepi Lapangan Terhadap Dosis Serap pada Pesawat Linac Nur Alya; Robert Janssen Stevenly; Pratiwi Sri Wardani; Erlinda Ratnasari Putri
Jurnal Inotera Vol. 9 No. 1 (2024): January-June 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss1.2024.ID307

Abstract

Radiotherapy is a medical treatment that uses ionizing radiation to kill cancer cells using a Linear Accelerator (Linac). One of the errors in radiotherapy irradiation can occur because the radiation beam that comes out is not in accordance with the planning. Therefore, radiation absorbed dose measurement is needed to carry out as a quality assurance to control the accuracy and suitability of the dose to be received by the patient by following the standards of the Technical Report Series (TRS) 398. This study was conducted at Radiotherapy Installation of RSUD A.W. Sjahranie Samarinda. In the measurement of radiation absorbed dose, the detector was placed in the center of the water phantom with a certain depth and placed in an axis position perpendicular to the radiation source. The detector is not only placed in the axis position, but also placed on the 4 edges of the field with the aim of knowing the effect of the location of the detector on the absorbed dose on the Linac plane. Medium water phantom, Farmer type ionization detector with a depth of 10 cm, and radiation source distance to the phantom surface of 100 cm were applied in this study. The measurement deviation results at the axis position and 4 field edges are 0.01%, 0.06%, 0.03%, 0.05%, and 0.05%. These values are within the tolerance limits written in the IAEA TRS 398 protocol, which is ± 2%. This states that the radiation absorbed dose by the water phantom is homogeneous in all directions.
Classrooms Acoustic Evaluation to Enhance Quality of Teaching and Learning in Higher Education Institutions L. Lindawati; M. Mahyuddin; Mery Silviana; Amilia Hasbullah
Jurnal Inotera Vol. 9 No. 1 (2024): January-June 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss1.2024.ID308

Abstract

The acoustical condition in the classroom frequently affects the quality of teaching and learning activities in higher education Institutions. Lecture activities require a favorable environment that is free of noise. The study aims to assess the acoustical condition of the C101 classroom, Engineering Faculty, Abulyatama University. Data collection was conducted by measuring Background Noise Levels and student perception of noise using a set of questionnaires. The result revealed that the average background noise level (BNL) measured in the classroom is 56,9 decibels. It shows that the BNL measured is greater than the noise permitted by the Indonesian government for the education area. The primary cause of this noise is the students activity inside the classroom during learning activities. In general, respondents are likely able to deal with noise existence within the classroom.
Comparison of Ergonomic Assessment Results in the Automotive Polymer Industry: Cornell Musculoskeletal Discomfort Questionnaire (CMDQ) and Rapid Upper Limb Assessment (RULA) Methods Khadijah Sayyidatun Nisa; Abdussalam Topandi; Isma Wulansari; Fauziah Aulia; Bismo Zulfikar Mustofa
Jurnal Inotera Vol. 9 No. 1 (2024): January-June 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss1.2024.ID309

Abstract

Musculoskeletal disorders (MSDs) encompass injuries to muscles, nerves, joints, and connective tissues, affecting the neck, back, and limbs. The polymer automotive industry, particularly in manufacturing automotive components using plastic injection tools, involves workers with diverse postures. Non-ergonomic postures can lead to muscle tension and health issues, emphasizing the importance of safety and ergonomics. This study employs the Cornell Musculoskeletal Discomfort Questionnaire (CMDQ) and Rapid Upper Limb Assessment (RULA) methods to assess working postures. In the production sector, the average RULA score is 3.8 (31.67%), indicating moderate risk and suggesting further investigation. Conversely, the non-production sector's average RULA score is 3.4 (28.33%), indicating a lower risk but still necessitating changes. CMDQ analysis on 12 respondents reveals posture variation. In the production sector, the average CMDQ score is 2.5 (20.83%), signaling moderate risk and advocating for further investigation. This study lays groundwork for downstream polymer industries to enhance efficiency, quality, and safety.
A Study on Three-Dimensional Modelling of the Baitul Ilmi Mosque's Itera Using Terrestrial Laser Scanner Technology Ryan Delfa Amanda; Irdam Adil; Misfallah Nurhayati
Jurnal Inotera Vol. 9 No. 1 (2024): January-June 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss1.2024.ID317

Abstract

As advancements in three-dimensional (3D) modeling continue to progress, the demand for precise and efficient measurement techniques has led to significant innovations in the methods and tools used for creating 3D models. Among these, the utilization of Terrestrial Laser Scanners (TLS) has become increasingly popular. This study focuses on the integration of TLS and total station technologies for 3D modeling of a mosque. The total station was employed to conduct five sets of perfectly bonded closed polygon measurements, each consisting of five polygon points, from which three marker points were derived. Concurrently, the TLS was used to perform a comprehensive scan of the mosque from 17 different positions. The data obtained from the TLS scan provided a detailed 3D model, while the total station measurements served as control points to ensure the model's global coordinate accuracy. The processing of the closed polygon data was executed using the Bowditch method, and the TLS data was registered using the cloud-to-cloud method. This approach yielded an overall quality assessment, including a bundle error of 0.008 m, an overlap of 27%, a strength of 65%, and a cloud-to-cloud discrepancy of 0.008 m. The integration of point clouds with total station coordinates resulted in an error margin of 0.160 m. Geometric validation of the model was conducted by comparing its dimensions to measurements obtained using a measuring tape, which yielded a Root Mean Square Error (RMSE) of 0.045 m.
Evaluasi Geometrik Konstruksi Jalan pada Tanjakan Ir Sutami PJR Bandar Lampung Menggunakan Pengukuran Topografi Meraty Ramadhini; Akbar Wahyu Nugraha; Dandy Ardian Dani Saputro; Safridatul ‘Audah
Jurnal Inotera Vol. 9 No. 1 (2024): January-June 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss1.2024.ID319

Abstract

In general, steep inclines are made winding for the reason that they reduce the energy required to reach the same height. The slope of the incline will be gentler with curves so it is easier to climb, because the car does not have enough power to climb steep slopes so the road is made winding. Based on accident data from the KNKT, the highest number of accidents that occurred on the PJR Bandar Lampung ramp was 21 incidents in a year. Geometric road on an incline. The winding and narrow condition of PJR Bandar Lampung makes it difficult for vehicles to pass this section of road. The aim of this research is to carry out geometric analysis and evaluation of roads on the PJR Bandar Lampung incline based on Road Geometric Design Guidelines Number 13/P/BM/2021 using topographic measurements. The results of the geometric evaluation of the road were suitable for corner 4 with a superelevation below 6% and with a minimum radius from a speed of 20 km/h to 50 km/h, while the results were not suitable for the average ideal lane width of 3 m. maximum superelevation is 10.01%, maximum slope is 9.81% and critical slope length is 9.33%. So the road geometry does not comply with Road Geometric Design Guidelines Number 13/P/BM/2021.
Effect of Cutting Speed on Surface Roughness AS-Scrapper ST37 Using Coated Carbide Tool Fransnazoan Sitorus; Dejoi Irfian Situngkir; A Hafizh Saifullah; Nuzuli Fitriadi
Jurnal Inotera Vol. 9 No. 1 (2024): January-June 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss1.2024.ID321

Abstract

In the lathe machining process, especially surface roughness, are greatly influenced by the cutting angle of the tool, feeding speed, cutting speed and depth of cut. Research purposes is to determine the effect of cutting conditions, namely cutting speed (v) and cutting depth (a) on the level of surface roughness (Ra) on the ST37 As Scrapper material using quantitative research methods that focus on numeric or numbers in a study. The research results obtained a value of Ra ⃗= 6.063 µm at optimum cutting conditions varying a= 1 mm, v= 62 m/min, f= 0.05 mm, tc= 5.29 min.
SEIR Epidemic Model of the Spread of Tuberculosis in Samarinda City with the Addition of Vaccination Parameters Indriasri Raming; Andi Nafa Nurfadillah; Ersya Nanda Aulia; Muhammad Rafiq; Julia
Jurnal Inotera Vol. 9 No. 1 (2024): January-June 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss1.2024.ID323

Abstract

Tuberculosis (TB) is a contagious, dangerous disease that infects the human body through the respiratory tract. The city of Samarinda itself is the city with the second highest rate of tuberculosis transmission in East Kalimantan. The aim of this research is to build a SEIR mathematical model of the spread of tuberculosis, analyze the stability of the model, and simulate the model. This research uses the Runge-Kutta method, which has high accuracy in estimating solutions and is relatively stable. This data is secondary data obtained through BPS as well as articles from previous researchers. The results of the research showed that the percentage of increase in the spread of the virus in the susceptible population (S) during the first week was 2,048%, then the 4th week to the 100th day decreased by approximately 164,100%, then the percentage of the population that was exposed but did not spread it (E) decreased in the first week, namely 34,525%, then in the 4th week to the 100th day there was a very significant decrease, namely 7,600%, then the percentage of the population infected and infectious (I) in the first week rose to 19,138%, then in the 4th week to the 2nd week -100 experienced a decrease of approximately 716,900%, and finally, the percentage of the population who recovered in the first week began to increase due to the very influential vaccine, namely increasing by 26,860%, then the 4th week to the 100th week also experienced a significant increase, namely by 81.681%.
Information System for Operational Goods Management at the Career Guidance and Entrepreneurship Center Malikussaleh University Rizki Suwanda; Said Fadlan Anshari; Wardina Ningsih
Jurnal Inotera Vol. 9 No. 1 (2024): January-June 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss1.2024.ID324

Abstract

Managing operational goods manually leads to slow and inefficient work performance, hence the design and implementation of an information system that can efficiently manage operational goods needs to be done in a structured manner and work optimally. Analysis of operational goods needs is conducted through observation and interviews with relevant parties to discuss the problems faced and identify the required features. Some key features implemented in this system include complaint management for operational goods needs, which can be managed and utilized for effective procurement or requests for goods according to requirements. This system is designed using the PHP programming language with the Codeigniter framework and MySQL database for database management. With this system in place, it is expected to assist in the more effective and systematic management of operational goods needs at the Career Guidance and Entrepreneurship Center of Malikussaleh University.
Blocplan Algorithm for Facility Layout Design in Various Industry in Indonesia Iing Pamungkas; Abdiel Khaleil Akmal; Heri Tri Irawan
Jurnal Inotera Vol. 9 No. 1 (2024): January-June 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss1.2024.ID327

Abstract

Facility layout is an important aspect in planning and developing production facilities. A good layout can increase efficiency, productivity and safety in the production process. The Blocplan algorithm is a layout design method that can produce an efficient layout. This method uses a heuristic algorithm to find layouts based on having the highest R-Score value. The Blocplan algorithm has been applied in various industries in Indonesia because of its advantages which can produce a more efficient layout compared to the initial layout. Based on this, it is necessary to study the use of the Blocplan algorithm in designing facility layouts in various industries in Indonesia. This review aims to determine the use of the Blocplan algorithm in designing facility layouts in various industries in Indonesia. The review results show that layout design using the Blocplan algorithm can produce a layout that is more efficient than the initial layout. It was found that several related industries in Indonesia can use the Blocplan algorithm in redesigning facility layouts, including the pharmaceutical industry, construction project implementation, food industry, steel or iron industry, spring bed production, PVC production, transformer production, valve production, production trolleys, corn milling, feed processing, plastic recycling, garment or convection industry, robotization industry, coffee production, paper production, brick production, and wood processing.
Identification of Damage in Press Stations Using the Failure Mode and Effect Analysis (FMEA) Method at PT. Beurata Subur Persada Abdiel Khaleil Akmal; Iing Pamungkas; Heri Tri Irawan
Jurnal Inotera Vol. 9 No. 1 (2024): January-June 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss1.2024.ID329

Abstract

PT. Beurata Subur Persada (BSP) is a crude palm oil (CPO) producer based in Babah Dua Village, Tadu Raya District, Nagan Raya Regency, Aceh. PT BSP employs 103 people across various production stations, including presses, threshers, sterilizers, and trucks.The Failure Mode and Effect Analysis (FMEA) method is being used in this study to determine damage to PT. Beurata Subur Persada's press station. The FMEA approach is used to assess probable failures in the manufacturing process, determining their severity, frequency of occurrence, and detection capabilities. This study focuses on gathering machine damage data from November 6 to December 6 of 2023 and evaluating it to determine the Risk Priority Number (RPN) value, which will be used to indicate the priority repairs required. This research aims to make recommendations for future damage repair and prevention, as well as improve the company's reliability and efficiency in operations.

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