Universitas Proklamasi 45 Online Journals
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Analisis Pengaruh Pengaturan Parameter pada CNC Cutting Laser terhadap Kualitas Hasil Pemotongan pada Material Stainless Steel 304 di PT X:
Full text linkThe advancement of manufacturing technology continues to drive optimization in material cutting processes, one of which is the use of CNC Laser Cutting machines. This study aims to analyze the effect of varying cutting parameters on the quality of Stainless Steel 304 cutting results at PT X. The parameters examined include cutting speed, laser power, gas pressure, and focal point. Experiments were conducted by adjusting these parameters and evaluating the results based on dimensional accuracy, surface cleanliness, and cutting quality. The findings indicate that an optimal combination of parameters can enhance cutting quality by reducing defects such as dimensional inaccuracies, rough surfaces, and oxidation on the cutting edges. The study concludes that proper parameter settings are crucial for improving production efficiency and final product quality in the manufacturing industry
Integrasi Rancangan Mesin Pencetak Briket Arang dengan Alat Pemotong pada Belt Conveyor
Full text linkBriket arang merupakan salah satu alternatif bahan bakar ramah lingkungan yang dapat diproduksi dari limbah biomassa seperti sekam padi dan daun jati. Namun, proses pemotongan briket secara manual menyebabkan ketidakkonsistenan ukuran, yang dapat mempengaruhi efisiensi pembakaran dan nilai kalor yang dihasilkan. Penelitian ini bertujuan untuk merancang dan mengembangkan mesin pencetak briket arang yang terintegrasi dengan alat pemotong pada belt conveyor guna menghasilkan briket dengan ukuran yang seragam.
Metode penelitian yang digunakan meliputi perancangan, pembuatan, serta pengujian alat berdasarkan standar teknis yang telah ditetapkan. Proses penelitian mencakup desain alat pencetak, integrasi sistem pemotongan, serta uji nilai kalor untuk memastikan kualitas briket yang dihasilkan. Hasil penelitian menunjukkan bahwa penggunaan alat pemotong terintegrasi pada belt conveyor mampu meningkatkan konsistensi ukuran briket, sehingga briket yang dihasilkan memiliki dimensi yang seragam dan nilai kalor yang lebih optimal.
Kesimpulan dari penelitian ini menunjukkan bahwa integrasi sistem pemotongan pada belt conveyor dalam mesin pencetak briket arang dapat meningkatkan efisiensi produksi serta kualitas briket yang dihasilkan. Penelitian ini memberikan kontribusi dalam pengembangan teknologi produksi briket arang sebagai alternatif bahan bakar yang lebih ramah lingkungan
The Effect of Yeast Types on the Production of Bioethanol from the Waste of Pondoh Snake Fruit (Salacca zalacca)
Full text linkThe need for fuel oil as an energy source is increasing every day, while fossil energy reserves are running low; therefore, to meet fuel needs, it is necessary to develop alternative fuels that are renewable and environmentally friendly. One of them is bioethanol, namely ethanol made from plants containing starch, sugar, and cellulose, such as pondoh snake fruit waste. This research aims to determine the quantity of bioethanol, calorific value, and flame test results, with various types of yeast, that is, fermented cassava (tape) yeast and bread yeast. The bioethanol production process in this research utilizes a Pasteurization–Fermentation–Distillation process. The pasteurization used a water bath at a constant temperature of 700C for 30 minutes. The fermentation process was conducted for 4 days, followed by a 5-hour distillation. The bioethanol produced in this study has the best of the yeast variety of bread yeast, where the highest volume is 17.5 ml, the heating value is 4.215,21 cal/g, and the flame test has the highest flame height of 18 cm with a flame duration of 8 minutes. The flame test results of bioethanol with variations of bread yeast produced a blue-orange flame, while bioethanol with variations of tape yeast produced a bluish-orange flame
Krisis Reputasi dan Respon Konsumen terhadap Palestine Washing McDonald’s: Efek Perceived Value dan Word of Mouth terhadap Purchase Intention Produk McDonald’s dengan Mediasi Purchase Attitude
Full text linkThis study examines the influence of Perceived Value and Word of Mouth on Purchase Intention in the context of McDonald’s alleged Palestine Washing, with Purchase Attitude as a mediating variable. A systematic literature review was conducted using databases such as Google Scholar, JSTOR, ScienceDirect, and open-access journals to explore the interplay between these constructs. The findings reveal that Perceived Value and Word of Mouth significantly impact Purchase Intention through Purchase Attitude as a mediator. This highlights the critical role of managing consumer perceptions, especially amidst sensitive socio-political controversies. However, a limitation of this study is the lack of public awareness about McDonald’s alleged Palestine Washing, which may affect the validity of responses. Practically, this research provides insights for McDonald’s to assess consumer purchase intentions following such controversies and suggests strategies to maintain brand trust and competitiveness. By examining marketing dynamics amid political challenges, this study offers a distinct perspective on how global brands can cultivate consumer trust and loyalty in contentious environments
Kajian Tentang Pengaruh Persepsi Dukungan Organisasi terhadap Perilaku Kerja Karyawan Pasca Restrukturisasi: Studi pada Karyawan Perusahaan Teknologi Berbasis Digital
Full text linkThe development of digital-based technology has triggered the phenomenon of Tech Winter, leading to layoffs and increasing job insecurity among surviving employees. This study aims to analyze the effect of perceived organizational support (POS) on job insecurity and its impact on the task performance and innovative behavior of layoff survivors. The study also explores how affective commitment acts as a mediator, while financial job dependence and organizational cynicism serve as moderators in the relationship between job insecurity and work performance, as well as innovative behavior among layoff survivors in digital technology companies. This research employs the Partial Least Squares Structural Equation Modelling (PLS-SEM) method to analyze the relationships between variables. The sample consists of 262 respondents who are layoff survivors working in digital technology companies in Indonesia. The results show that perceived organizational support (POS) has a significant effect in reducing job insecurity, which in turn improves task performance and innovative behavior. Affective commitment serves as a significant mediator, while financial job dependence and organizational cynicism moderate the impact of job insecurity on work outcomes. These findings highlight the importance of organizational support in mitigating job insecurity for employees after a layoff
Pengaruh Hedonic Consumption Tendency, Fashion Involvement, dan Visual Merchandising terhadap Impulsive Buying pada Gen Z di Oh Some Carefour Medan
Full text linkThis study aims to examine the influence of hedonic consumption tendency, fashion involvement, and visual merchandising on impulsive buying among Gen Z at Oh Some! Carefour Medan. The growing trend of unplanned purchases among Gen Z highlights the need to examine the emotional and visual factors that influence their purchasing behavior. A quantitative survey method was used, involving 96 respondents aged 18–24. The data were analyzed using multiple linear regression in SPSS. The results show that hedonic consumption tendency and fashion involvement have a positive and significant effect on impulsive buying, while visual merchandising shows no significant effect. Simultaneously, all three variables significantly influence impulsive buying, contributing 42.5%. These findings suggest that emotional aspects and fashion involvement play a key role in shaping impulsive buying behavior among Gen Z
Resiliensi dan Kematangan Karier terhadap Quarter-Life Crisis pada Mahasiswa Fresh Graduate UIN Sumatera Utara
Full text linkThis study examines whether resilience and career maturity explain variance in quarter-life crisis (QLC) among fresh graduates of the Faculty of Islamic Economics and Business, State Islamic University of North Sumatra. Using a quantitative correlational design with purposive sampling (2023–2024 graduates), validated Likert-type scales captured resilience (CD-RISC-based), career maturity (planning, exploration, occupational information, decision-making), and QLC indicators. After meeting classical assumptions, multiple linear regression showed a jointly significant model (R² = .443; Adjusted R² = .432). Partially, higher resilience related to lower QLC, and career maturity had a significant negative effect on QLC, supporting a dual-path account in which psychological hardiness and vocational clarity jointly mitigate early-career identity strain. Practical implications recommend an integrated career-readiness + resilience package (career clinics, decision-making and job-search training, structured internships/projects, personal finance education, and digital well-being). Limitations include cross-sectional design, self-report measures, and a 10% margin of error; future work should adopt longitudinal/SEM approaches to test mediating or moderating mechanisms (e.g., career efficacy, peer support, family economy, functional religiosity)
The Simulation of Radiation Shielding Made of Portland Material in a 230 MeV 300 NA Cyclotron Room for Proton Therapy Facility Using PHITS Code System
Full text linkThis study investigates the effectiveness of radiation shielding made from Portland material in a 230 MeV, 300 NA cyclotron room for a proton therapy facility. Proton therapy is an advanced treatment method for cancer that uses protons to irradiate tumors with high precision. However, the high energy of protons requires effective shielding to protect the surrounding environment and personnel from radiation exposure. In this research, the radiation shielding performance of Portland material was evaluated using the PHITS (Particle and Heavy Ion Transport System) version 3.351 simulation software. The study focuses on assessing the attenuation of radiation within the cyclotron room under various operational conditions. The results from PHITS simulations provide insights into the potential of Portland material in reducing radiation levels in proton therapy rooms, contributing to the safety and efficiency of such facilities. This analysis is essential for optimizing shielding design
Pengujian Tungku Pembakar Sampah Minim Asap
Full text linkWaste refers to residual materials resulting from various human daily activities or natural processes that exist in solid form. In general, the term waste denotes unwanted materials or substances considered to have lost their usefulness after a certain activity or domestic process has been completed. To date, waste management efforts in many regions have not yet achieved optimal results. The level of public awareness and concern regarding environmental issues related to waste also varies significantly, making this issue an urgent environmental challenge that requires immediate attention and solutions. This study focuses on testing the effectiveness of waste treatment methods through the combustion process. The main objective is to determine the concentration levels of carbon monoxide (CO) and other hazardous gases generated during combustion, as well as to evaluate the performance of a waste incineration machine designed to produce low-smoke emissions. Gas concentration measurements were conducted using gas detection sensors integrated with an Arduino-based microcontroller system. The research approach combines both qualitative and quantitative methods. The qualitative aspect involves reviewing and comparing previous research findings, while the quantitative approach is carried out through direct measurements using a self-designed measuring instrument. This study is part of an ongoing research program aimed at developing a Low-Smoke Waste Incinerator Machine. Preliminary results indicate that the effectiveness level of the waste incinerator remains relatively low. This condition is attributed to the high concentrations of harmful exhaust gases such as carbon monoxide (CO), nitrogen oxides (NOx), and sulfur dioxide (SO₂) produced during the combustion process. In addition, the design of the incinerator has not yet reached optimal efficiency, as reflected by the persistently high NOx and SO₂ emissions. Therefore, more precise calibration of the gas sensors is required to ensure that the measurement data obtained accurately represent the actual concentrations of combustion gases
Kajian Hukum Praktik Pengobatan Tradisional Berbasis Metafisik dalam Perspektif Regulasi UU Nomor 1 Tahun 2023 dan UU Nomor 17 Tahun 2023
Full text linkTraditional metaphysical-based healing practices are an integral part of Indonesian culture, particularly in rural areas where access to modern healthcare services remains limited. Although not always supported by empirical medical evidence, the public’s trust in these time-honored methods and their spiritual values keeps these practices relevant. However, national regulatory dynamics have raised new issues, particularly following the enactment of Law Number 17 of 2023 on Health, which recognizes traditional medicine as part of the national health system, and Law Number 1 of 2023 on the Criminal Code, which introduces criminal penalties for non-medical practices deemed harmful or misleading. This regulatory duality creates legal uncertainty and dilemmas for traditional healers in obtaining legal recognition and protection.
This study aims to analyze the conflict of norms between the two laws in the context of the legitimacy of metaphysical-based traditional medicine and provide recommendations for regulatory harmonization. The research method used is normative law with a legislative and conceptual approach, supported by a literature review of primary and secondary legal materials. The results of the study indicate that regulatory disharmony has resulted in limited legal protection for traditional healers, while service users are in a vulnerable position due to the absence of adequate supervision and protection